US3271800A - Shoe machines - Google Patents

Description

J. N. ALLARD Sept. 13, 1966 SHOE MA CHI NES 5 Sheets-Sheet 1 Filed May 25, 1965 :1 [r2 venfor Jules N. A/Zard 5y hi5 Affohhey fimnafl'f w I J. N. ALLARD Sept. 13, 1966 SHOE MACHINES 5 Sheets-Sheet 2 Filed May 25, 1965 Sept. 13, 1966 J. N. ALLARD 3,271,800

SHOE MACHINES Filed May 25, 1965 5 Sheets-Sheet 5 Sept. 13, 1966 J. N. YALLARD 3,271,800

SHOE MACHINES Filed May 25, 1965 5 Sheets-Sheet 4 Sept 13, 1966 Filed May 25, 1965 J. N. ALLARD I SHOE MACHINES 5 Sheets-Sheet United States Patent 3,271,800 SHOE MACHINES Jules N. Allard, Tyngsboro, Mass, assignor to United Shoe Machinery Corporation, Boston, Mass, a corporation of New Jersey Filed May 25, 1965, Ser. No. 458,616 15 Claims. (Cl. 12-125) This invention relates to shoe machines and particularly to improvements in a machine for assembling shoe upper parts on their lasts and molding the back parts of heel portions of the upper materials upon the heel end portions of the lasts, for example, of the type disclosed in United States Letters Patent No. 3,138,810, issued June 30, 1964, on an application filed in the name of Karl V. Becker. It will be understood, however, that the invention is not limited in utility to embodiment in a machine of that particular type or to the exact mechanical construction herein illustrated.

As will appear by reference to the above-mentioned patent, during the operation of each of the two assembling and back part molding stations of the machine, a last with upper materials loosely assembled thereon, together with an insole, is mounted on a shoe supporting jack which is first elevated to cause the heel end of the shoe to be pressed firmly against a shoe rest, or holddown, whereupon, after the operator has properly positioned the upper materials on the heel end of the last, a molding band is caused to embrace the heel end of the shoe thus to mold the upper materals to the shape of the last. Next, wipers are operated to wipe the lasting margin of the upper materials inwardly over and to press the lasting margin firmly against the insole at the heel end of the shoe, and a tack is driven to secure the overwiped upper materials at the back line to the insole. Machines of the type illustrated in the Becker patent may also be, and in fact are widely used, in addition to the above-described assembling and back part molding operation, for cement heel seat lasting, in which case the tacking mechanism is omitted and the heel end of the insole and/ or the lasting margin of the upper materials is rendered adhesive prior to the operation of the machine.

A common practice, when using the machines in this manner, is to apply a band of thermoplastic adhesive to the heel end of each insole before it is assembled on its last and then to reactivate this band of thermoplastic adhesive immediately before the last with insole and upper materials assembled thereon is presented to the machine. Another procedure is to apply to the heel end of the insole, assembled on its last, a band of thermoplastic adhesive, place the last in the machine, assemble and position the upper materials thereon, and then initiate operation of the machine. While each of these procedures is practical and effective, when followed with appropriate care and discretion on the part of the operator, they do have objectionable aspects including more particularly the extra time and labor involved in the step of applying the thermoplastic adhesive to the insole and the necessity for the operator to work rather quickly in assembling and positioning the upper on the last before the thermoplastic adhesive has time to cool and lose its adhesive character. It is, therefore, a principal object of this invention to avoid the above-mentioned difliculties by the provision, in a machine of the above-mentioned type, of a novel and improved means for applying thermoplastic adhesive to the heel end of the insole of each shoe during the assembling, back part molding, and heel seat lasting operation.

With the foregoing object in view, the herein illustrated machine, which has a jack for supporting a last with upper materials and an insole assembled thereon and ice for causing the heel end of a shoe thereon to be pressed tfirmly against a shoe rest, or holddown, a heel band for molding the upper materails to the heel end of the last, and Wipers for thereafter wiping the lasting margin of the upper materials inwardly over and for pressing the lasting margin against the heel end of the insole, is also provided with means operable, after the heel band has been caused to embrace the upper materials and before the wipers are advanced and closed, to apply to the heel end of the insole a band of adhesive in condition for adhesively bonding the lasting margin to the insole when pressed thereagainst by the wipers. More particularly, the aforementioned means compries a U-shaped nozzle mounted on the heel band carriage for movement first, with the carriage, to a position surroundng the shoe rest above the heel end of the shoe and toeward thereof, and then, relatively thereto, downwardly and rearwardly of the heel end of a shoe in the machine and into the pocket formed by the lasting margin of the upper materials, held upstanding by the heel band after it has embraced the heel end of the shoe, and for movement upwardly and forwardly away from the insole, following the extrusion of a band of molten adhesive onto the insole, to provide space for the wipers as they are immediately advanced and closed to wipe the lasting margin of the upper materials inwardly over and to press it firmly against the applied band of adhesive, thereby adhesively to bond the lasting margin to the insole in lasted position.

Preferably, and as herein illustrated, the above-mentioned nozzle is adapted to apply a band of molten thermoplastic adhesive on the insole and to this end is associated with a melt body having a passageway connected to the nozzle and into which the leading end of a solid rod of adhesive may be fed to be melted therein and to cause molten adhesive to be extruded through the nozzle. For thus feeding a measured quantity of solid rod adhesive into the passageway, a pair of feed wheels are provided, together with a motor for driving the feed wheels and an electrical timing circuit for variably predetermining the length of rod fed into the passageway, during each operating cycle of the adhesive applying means, "and accordingly the quantity of molten adhesive applied to each insole. Associated with the nozzle is a valve member which is yieldingly held in closed position and means responsive to engagement with the insole of a shoe are provided for moving the valve to open position when the nozzle is in contact with the insole. The nozzle has a U-shaped groove in its operating surface and is inclined, with ends of this groove lowermost, so as to be parallel with the heel end of an insole of a shoe in the machine. Accordingly, adhesive left in this groove and not applied to the insole will tend to flow by gravity into the two ends of the groove where it collects and from which it eventually drops. To avoid this drooling action, plate members are provided for covering portions of the nozzle groove adjacent to its ends, these plates being provided with openings of a size to retain adhesive, under the action of gravity, but at the same time being capable of passing adhesive therethrough, and onto the insole, when adhesive is extruded into the groove.

The above and other objects and features of the invention will appear in the following detailed description of the preferred embodiment thereof illustrated in the accompanying drawings and will be pointed out in the claims.

In the drawings,

FIG. 1 is a view in side elevation of a portion of one of the assembling and back part molding stations of a machine of the type disclosed in the above-mentioned Becker patent provided with an adhesive applying means in accordance with the present invention;

FIG. 2 is a plan view of that part of the machine which is shown in FIG. 1;

FIG. 3 is an exploded angular view of the adhesive nozzle which forms a part of the adhesive applying means;

FIG. 4 is an angular view of a part of the nozzle, as seen from below;

FIGS. 5, 6 and 7 are step views illustrating the operation of the adhesive applying means;

FIG. 8 is a diagrammatic view showing the fluid pressure system which is associated with the assembling and back part molding station and the adhesive applying means shown in FIGS. 1, 2, 5, 6 and 7, and

FIG. 9 is an electrical diagram.

Referring to these drawings, FIG. 1 corresponds quite closely to FIG. 2 of the Becker patent and shows one of the assembling and back part molding stations of a machine of this type which has been modified by the omission of the tacking mechanism and the provision of the novel and improved adhesive applying means of this invention. Thus, the illustrated machine has a main frame member, indicated generally by the reference character 20, with which there is associated a shoe supporting jack 22, mounted for vertical movement by means of a fluid pressure actuated piston 24, in a cylinder 26, see FIG. 8, to press the heel end of a shoe S, comprising a last L with upper materials U, C, P, and an insole 1, FIGS. 4, and 6, assembled thereon against a shoe rest, or holddown 30, in the manner explained in detail in the Becker patent. Also associated with the frame and slidably mounted thereon is a heel band carriage provided with a heel molding band 42, corresponding in construction and function to the heel band 156 illustrated in FIGS. 6 and 12 of the Becker patent and described in columns 5 and 6 thereof, and wipers 50, 52 corresponding to the wipers 216, 220 in FIG. 4 of the Becker patent and described in columns 8 and 9 thereof.

For advancing the heel b and carriage 40 toward the heel end of a shoe on the jack, thereby to cause the heel band 4-2 to embrace and to shape the upper materials to the heel end of the last, a fluid pressure actuated piston 60, in a cylinder 62, FIG. 8, is provided, this piston having a piston rod 64 which is operatively connected to the carriage 41) by means of a lever 66 and a link 68. The wipers 50, 52 are advanced and closed by a fluid pressure actuated piston 70, in a cylinder 72, see FIG. 8, acting through various earns, rollers, etc, as described in detail in the Becker patent.

The fluid pressure system, diagrammatically illustrated in FIG. 8, comprises essentially that part of the entire fiuid pressure system of a machine of the type disclosed in the Becker patent, see FIG. 16 thereof, which is associated with one of the assembling and back part molding stations and is modified by the addition of the adhesive applying means of the present invention and its operating mechanism. Thus, an operating cycle of this station is initiated in response to the actuation of a treadle operated valve 80 which upon depression of the treadle causes fluid under pressure from a main supply line 82 to be admitted to the cylinder 26. As a result of such admission of fluid under pressure to this cylinder, the jack 22 will be elevated to press the heel end of a shoe S thereon against the shoe rest or holddown 30. This also sets a valve 84 so that, upon release of the treadle, fluid under pressure will be admitted to cylinder 62 thus causing the heel band carriage to be moved to the left, FIG. 2, so that the heel band 42 will embrace and shape the upper materials of the shoe to the heel end of the last. In the arrangement previously provided in the machine of the Becker patent, the wipers would now be advanced and closed and the operating cycle of the station com pleted automatically, in the manner fully explained in the Becker patent. For the purposes of this invention, however, just before the wipers are advanced and closed a band of molten thermoplastic adhesive is applied to the heel end of the insole in the following manner, and by means of mechanism about to be described.

Referring to FIGS. 1 and 2 of the drawings, there is mounted on the heel band carriage 40 an auxiliary frame member, indicated generally by the reference character 1611 having spaced apart upstanding side portions 102, 102. Secured to these side portions are two bracket-like arms 104, 1114 joined by cross webs 106, 108. Suspended between the side portions 102, 102, by means of parallel links 1-10, 111 112, 112, is a melt body formed of suitable metal and indicated generally by the reference character 114, provided with an elongated passageway 116 and an enlarged left-hand end 1155, as viewed in FIGS. 1 and 2, the enlarged end being cut away, as indicated by the reference character 1211, to provide a clearance space for a purpose soon to appear. Fastened to the opposite sides of the melt body 114, with insulating pieces 122, 122 interposed therebet'ween, are two side plates 124, 124 which extend to the right beyond the melt body, as shown, and supported on these side plates is a cover plate 126.

Supported on the cover plate 126 is a cylindrical housing 130 in which there is mounted an electrical motor 132 having a geared output shaft 134 (this housing, motor etc. being omitted from FIG. 2 to simplify the disclosure and a portion of the cover plate 126 being broken away to expose certain parts beneath it). Secured to the lower side of this cover plate is a bracket member 136 which supports, at its lower end, a pair of toothed feed wheels 1140, 142, FIG. 2, arranged to be driven from the output shaft 134 of the motor 132, through suitable gearing including a gear 144 which appears in FIG. 1 of the drawings. Also associated with this bracket member is a guide tube 46 for directing the leading end of a solid flexible rod R of thermoplastic adhesive, stored on a reel 14% suitably mounted at the outer ends of the bracket members 164, 194, to the feed wheels 140, 142 which feed it into and along passageway 116 in the melt body 114.

Pivotally mounted on the cross web 106, is a cylinder 156 containing a piston 1 52 having a piston rod 154 which extends out through a boss 156 on the left-hand end of the cylinder, FIG. 2, see also FIG. 8. This piston rod is connected, by means of a pin 158 to the side plates 124, 12-4 and thence to the melt body 114 which is normally held in the elevated position shown in FIGS. 1, 5 and 7 by fluid under pressure admitted to the righthand end of the cylinder 1'50 (left-hand end as viewed in FIG. 8) with the front edges of upstanding parts of the side plates 124, 124- bearing against a stop rod 164) which extends between the side portions 102, 102 of the frame member 1%.

Referring to FIGS. 37, there is secured to the lower side of the enlarged end 118 of the melt body 114, by means of screws 170, 170, a nozzle member, indicated generally by the reference character 172 and having a downwardly projecting portion 176 shaped as shown in FIG. 4, the nozzle member itself being cut away as indicated by the reference character 17 8 to match the cutaway portion 120 of the enlarged end 1 18. On its upper surface, the nozzle member is provided with a U-shaped groove 180 and directly below this groove, and in the lower part of the projecting portion 176, is a similarly shaped but narrower groove 182, these two grooves being in communication through a plurality of apertures, 1 84, 184, FIGS. 3 and 4. When the nozzle member 1'72 is assembled on the enlarged end 11 8 of the melt body 114, the groove 180 is in communication, through a vertically extending bore 186, with the passageway 116 of the melt body 114, FIGS. 5, 6 and 7.

Received within the groove 180 is a U-shaped valve plate and the heads of three operating pins 192, 192, 192 which extend through certain of the apertures 184 and project beyond the lower work-engaging surface 194- of the nozzle member 172, when the nozzle member is not in operative engagement with the heel end of the insole of a shoe, see FIGS. 5 and 7. This valve plate is yieldably held in engagement with the bottom of the groove 180, thus to cover the apertures 1'84, 184, by means of coil springs 196, 196, 196 which surround guide pins 198 and which are received in bores 200 in the end portion 118 of the melt body. When the nozzle member is brought into engagement with the heel end of an insole I as shown in FIG. 6 the valve plate 190 will be elevated to uncover the apertures 184, .184. As will be seen in FIG. 6, the groove 1 80 has an enlarged portion which is considerably wider than the valve plate 190 so that the adhesive can flow from bore 186 around and below the valve plate. Immediately thereafter, molten adhesive will be extruded through these apertures and the groove 182 and applied as a band of adhesive on the heel end of the insole in a manner about to be described. U-pon elevation of the nozzle away from the insole, the apertures 184, 18-4 will again be covered by the valve plate 190.

As is shown in FIGS. 5, 6 and 7, and see also FIG. 1 of the above-mentioned Becker patent, the frame 20 of the herein illustrated machine (corresponding to the frame member 36 of the machine of the Becker patent) is tipped forwardly so that the heel band carriage 40 and other parts carried thereby including the melt body 114 and the nozzle 172 are inclined from the horizontal at an angle of approximately Accordingly, after the apertures 1 84, 184 have been closed by the valve plate 190 as a result of the elevation of the nozzle to the position shown in FIG. 7, molten adhesive still remaining in the groove 182 and not previously transferred from this groove to the insole, will tend to run to the left as viewed in FIG. 7, under the action of gravity, and will collect in the two ends of this groove, eventually forming a large enough drop to fall by gravity out of the ends of the groove. To avoid this so-called drooling action, cover plates 202, 202, provided with apertures 204, 204 are secure-d to the nozzle member 172 over the ends of the groove 1 82. The apertures 204, 204 while large enough to permit the flow of molten adhesive therethrough under pressure are small enough to inhibit flow by gravity.

The enlarged end 118 of the melt body 114, is heated by means of two electrical heaters 220, 220, FIG. 3, and see also FIG. 9, which receive electrical energy from a pair of lines 222, 222 under the control of a thermostat switch 224. A second thermostat switch 226 is provided for preventing operation of the adhesive applying means until the melt body has reached the proper temperature.

Referring to FIG. 8, the treadly operated valve 80 is connected to one end of the jack cylinder 26 (i.e. the lower end) by means of a conduit 250 in which there is a check valve 252, a pilot operated exhaust valve 254, a pressure regulator valve 256 and a flow control valve 258, and to the other end of this cylinder by means of a conduit 260 in which is located the valve 84, previously referred to and a quick exhaust valve 264. Leading from one outlet of the valve 84 is a conduit 270 which may be connected by a pilot operated reversing valve 280 either to a conduit 272 leading to one end of the wiper operating cylinder 72 through a valve 282 and a flow control valve 284, or to a conduit 274 leading to one end of the cylinder 150 through a solenoid operated valve 276 and a sequence valve 278.

Conduit 270 is connected to the conduit 250, at a point between the valve 254 and the valve 256, through a conduit 290 and a one-way check valve 292, and to one end of the heel band carriage operating cylinder 62 through a conduit 300- in which there are a pressure regulating valve 302 and a quick exhaust valve 304. The other end of this cylinder is connected to the conduit 260 'by means of a conduit 310, which also leads to one end of the wiper operating cylinder 72. The other end of the cylinder 150 is connected to the main supply line 82 through a conduit 320, in which there are a flow control valve 322 and a pilot operated valve 324. The pilot operated reversing valve 280 is adapted to be operated by pressure fluid from the conduit 274 which passes through a conduit 330 and a solenoid operated valve 332.

When the piston 152 is in the position shown in FIGS. 1, 2 and 8, the valve 282 will be opened against the resistance of a return spring 340 by reason of a direct engagement of its operating plunger 341 with the boss 156 on the cylinder 150. At the same time, a limit switch 342, FIG. 9, will remain opened. This switch, when closed, connects the motor 132 and an electrical timing device, indicated generally by the reference character 350 and including a switch 352, across the lines 222, 222. The switch 352, when closed, connects the solenoid 354 of the valve 332 across the lines 222, 222.

After the operator has placed a last L having an insole I thereon upon the jack 22 and has assembled and located upper materials, including an upper U, a counter C and a counter pocket member P, on the last, he will depress the treadle operated valve to cause the jack post to rise and to clamp the heel end of the shoe against the shoe rest or holddown 30. He then releases the treadle valve and causes the heel carriage 40, together with the adhesive applying means, including the melt body 114 and the nozzle 172, to move to the left, FIGS. 1 and 2, and the heel band to snugly embrace the heel end of the shoe as shown in FIG. 5, and in the manner explained in the Becker patent referred to above. The cutaway portions 120, 178 of the end 118 of the melt body and of the nozzle 172 fit around the shoe rest 30, as shown, so that the nozzle surrounds the shoe rest, above the heel end of the shoe and toeward thereof. Pressure fluid will now enter the conduit 270, pass through the valve 280 into the conduit 274. If the melt body 114 has been brought up to the proper temperature (i.e. a temperature suflicient to melt the leading end of a solid rod of adhesive as it it is fed through the passageway 116, as sensed by the thermostatic switch 226), valve 276 will be opened by its solenoid 277 and pressure fluid will flow through the sequence valve 278, left-hand side of the cylinder 150, FIG. 2, thus causing the piston 152 to move to the right (to the left, FIG. 8).

As a result of such movement of this piston, the melt body 114 and nozzle 172 will be swung downwardly and heelwardly of the shoe so that the nozzle 172 is inserted nicely within the pocket formed by the lasting margin of the upper U, held upstanding by the band 42, and will finally come to rest in the position shown in FIG. 6 with the nozzle resting against the insole I. The switch 342 will now be closed as a result of the engagement of a side plate 124 with its operating plunger 343, thus energizing the motor 132 and also the electrical timing device 350. The motor 132 will now operate for a variably predetermined length of time to feed into and along the passageway 116 in the melt body 114 a length of the solid rod R of thermoplastic adhesive. As a result of thus feeding the solid rod into the passageway 116, a variably predetermined quantity of molten adhesive will be extruded through the nozzle 172, valve plate now being elevated by the pins 192, 192, to uncover the apertures 184, 184, into the lower groove 182 and thence as a band onto the heel end of the insole I.

At the end of the variably predetermined time interval, the switch 352 will close to energize the solenoid 354 thus causing the valve 332 to open and valve 280 to reverse the connections of conduit 270, connecting it to the conduit 272 and conduit 274 to exhaust. The valve 324, which was closed when pressure fluid was admitted to the conduit 274 (see pilot conduit 275) is now opened and pressure fluid from the main supply source is admitted through conduit 320 to the opposite end of the cylinder 150. Accordingly, the melt body 7 114 and nozzle 172 will now be elevated, see FIG. 7, and the switch 342 again opened thus stopping the motor 132 and the feeding of the rod of adhesive. Pressure fluid also flows through the conduit 272 and now open valve 282 and flow control valve 284 to the wiper operating cylinder 72 causing the wipers 50, 52 to be advanced and closed for wiping the lasting margin of the upper U inwardly over and for pressing it against the bottom of the insole thereby bonding the lasting margin ad hesively to the insole by the band of thermoplastic adhesive which had just previously been applied thereto. As is explained in the Becker patent, the wipers in one of the assembling and back part molding stations remain in pressing engagement with the shoe until the wipers are advanced and closed in the other station whereupon the parts return to their original positions, as shown in FIGS. 1 and 2. Also, either station may be released independently of the other by means of a release valve 360 which admits main line pressure to a conduit 362, FIG. 8.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a shoe machine having means for supporting a shoe comprising a last with an insole and upper materials assembled thereon, a molding band, wipers and power operated mechanism for actuating said ban-d and said wipers in predetermined sequence first to cause the band to embrace the upper materials and shape them to the heel end of the last and then to cause the wipers to advance and close to wipe the lasting margin of the upper materials inwardly over and to press it against the heel end of the insole, means for applying adhesive to the heel end of an insole of a shoe on the supporting means after the upper materials have been shaped to the last by the molding band and before the wipers are advanced and closed, said means comprising a nozzle member mounted for movement first to a position above the heel end of the shoe and toeward thereof, next downwardly and heelwardly into the pocket formed by the lasting margin of the upper held upstanding by the molding band and into contact .with the insole and then upwardly away from the insole, means for so moving the nozzle member, and means for extruding adhesive through the nozzle and onto the heel end of the insole while the nozzle is in contact therewith.

2. In a shoe machine having means for supporting a shoe comprising a last with an insole and upper materials assembled thereon, said supporting means including a jack and a shoe rest for engaging the heel end of the shoe, a molding band, wipers and power operated mechanism for actuating sa-id band and said wipers in predetermined sequence first to cause the band to embrace the upper materials and shape them to the heel end of the last and then to cause the wipers to advance and close to wipe the lasting margin of the upper materials inwardly over and to press it against the heel end of the insole, means for applying adhesive to the heel end of the insole of a shoe on the supporting means after the upper materials have been shaped to the last by the molding band and before the wipers are advanced and closed, said means comprising a U-shaped nozzle member mounted for movement first to a position surrounding the shoe rest above the heel end of the shoe and toeward thereof, next downwardly and heelwardly into the pocket formed by the lasting margin of the upper held upstanding by the molding band and into contact with the insole and then upwardly away from the insole, means for so moving the nozzle member, and means for extruding adhesive through the nozzle and onto the heel end of the insole while the nozzle is in contact therewith.

3. In a shoe machine having means for supporting a shoe comprising a last with an insole and upper materials assembled thereon, a molding band, wipers, a carriage on which the molding band is mounted, a power operated mechanism for actuating said carriage and said wipers in predetermined sequence first to effect movement of the carriage to cause the band to embrace the upper materials and shape them to the heel end of the last and then to cause the wipers to advance and close to wipe the lasting margin of the upper materials inwardly over and to press it against the heel end of the insole, means for applying adhesive to the heel end of the insole of a shoe on the supporting means after the upper materials have been shaped to the last by the molding band and before the wipers are advanced and closed, said means comprising a nozzle member mounted on the carriage for movement therewith first to a position above the heel end of the shoe and toeward thereof, next relatively to the carriage downwardly and heelwardly into the pocket formed by the lasting margin of the upper held upstanding by the molding band and into contact with the insole and then upwardly away from the insole, means for so moving the nozzle member, and means for extruding adhesive through the nozzle and onto the heel end of the insole while the nozzle is in contact therewith.

4. In a shoe machine having means for supporting a shoe comprising a last with an insole and upper materials assembled thereon, said supporting means including a jack and a shoe rest for engaging the heel end of the shoe, a molding band, wipers, a carriage on which the molding band is mounted and power operated means for actuating said carriage and said (wipers in predetermined sequence first to effect movement of the carriage to cause the band to embrace the upper materials and shape them to the heel end of the last and then to cause the wipers to advance and close to wipe the lasting margin of the upper materials inwardly over and to press it against the heel end of the insole, means for applying adhesive to the heel end of the insole of a shoe on the supporting means after the upper materials have been shaped to the last by the molding band and before the wipers are advanced and closed, said means comprising a U-shaped nozzle member mounted on the carriage for movement therewith first to a position surrounding the shoe rest above the heel end of the shoe and toeward thereof, as the band is caused to embrace the heel end of the shoe, next relatively to the carriage downwardly and heelwardly into the pocket formed by the lasting margin of the upper held upstanding by the molding band and into contact with the insole and then upwardly away from the insole, means for so moving the nozzle member, and means for extruding adhesive through the nozzle and onto the heel end of the insole while the nozzle is in contact therewith.

5. In a shoe machine having means for supporting a shoe comprising a last with an insole and upper materials assembled thereon, a molding band, wipers and power operated mechanism for actuating said band and said wipers in predetermined sequence first to cause the band to embrace the upper materials and shape them to the heel end of the last and then to cause the wipers to advance and close to wipe the lasting margin of the upper materials inwardly over and to press it against the heel end of the insole, means for applying molten thermoplastic adhesive to the heel end of the insole of a shoe on the supporting means after the upper materials have been shaped to the last by the molding band and before the wipers are advanced and closed, said means comprising a nozzle member mounted for movement first to a position above the heel end of the shoe and toeward thereof, next downwardly and heelwardly into the pocket formed by the lasting margin of the upper held upstanding by the molding band and into contact with the insole and then upwardly away from the insole, means for so moving the nozzle member, and means for extruding a variably predetermined amount of molten thermoplastic adhesive through the nozzle and onto the heel end of the insole while the nozzle is in contact therewith.

' 6. In a shoe machine having means for supporting a shoe comprising a last with an insole and upper materials assembled thereon, said supporting means including a jack and a shoe rest for engaging the heel end of the shoe, a molding band, wipers and power operated mechanism for actuating said band and said Wipers in predetermined sequence first to cause the band to embrace the upper materials and shape them to the heel end of the last and then to cause the wipers to advance and close to wipe the lasting margin of the upper materials inwardly over and to press it against the heel end of the insole, means for applying molten thermoplastic adhesive to the heel end of the insole of a shoe on the supporting means after the upper materials have been shaped to the last by the molding band and before the wipers are advanced and closed, said means comprising a U-shaped nozzle member mounted for movement first to a position surrounding the shoe rest above the heel end of the shoe and toeward thereof, next downwardly and heelwardly into the pocket formed by the lasting margin of the upper held upstanding by the molding band and into contact with the insole and then upwardly away from the insole, means for so moving the nozzle member, and means for extruding a variably predetermined amount of molten thermoplastic adhesive through the nozzle and onto the heel end of the insole while the nozzle is in contact therewith.

7. In a shoe machine having means for supporting a shoe comprising a last with an insole and upper materials assembled thereon, a molding band, wipers, a carriage on which the molding band is mounted and power operated mechanism for actuating said carriage and said wipers in predetermined sequence first to effect movement of the carriage to cause the band to embrace the upper materials and shape them to the heel end of the last and then to cause the wipers to advance and close to wipe the lasting margin of the upper materials inwardly over and to press it against the heel end of the insole, means for applying molten thermoplastic adhesive to the heel end of the insole of a shoe on the supporting means after the upper materials have been shaped to the last by the molding band and before the wipers are advanced and closed, said means comprising a nOZZle member mounted on the carriage for movement therewith first to a position above the heel end of the shoe and toeward thereof as the band is caused to embrace the heel end of the shoe, next relatively to the carriage downwardly and heelwardly into the pocket formed by the lasting margin of the upper held upstanding by the moldingband and into contact with the insole and then upwardly away from the insole, means for so moving the nozzle member, and means for extruding a variably predetermined amount of molten thermoplastic adhesive through the nozzle and onto the heel end of the insole while the nozzle is in contact therewith.

8. In a shoe machine having means for supporting a shoe comprising a last with an insole and upper materials assembled thereon, said supporting means including a jack and a shoe rest for engaging the heel end of the shoe, a molding band, wipers, a carriage on which the molding band and wipers are mounted and power operated mechanism for actuating said carriage and said wipers in predetermined sequence first to elfect movement of the carriage to cause the band to embrace the upper materials and shape them to the heel end of the last and then to cause the wipers to advance and close to wipe the lasting margin of the upper materials inwardly over and to press it against the heel end of the insole, means for applying molten thermoplastic adhesive to the heel end of the insole of a shoe on the supporting means after the upper materials have been shaped to the last by the molding band and before the wipers are advanced and closed, said means comprising a U-shaped nozzle member mounted on the carriage for movement therewith first to a position surrounding the shoe rest above the heel end of the shoe and toeward thereof, as the band is caused to embrace the heel end of the shoe, next relatively to the carriage downwardly and heelwardly into the pocket formed by the lasting margin of the upper held upstanding by the molding band and into contact with the insole and then upwardly away from the insole, means for so moving the nozzle member, and means for extruding a variably predetermined amount of molten thermoplastic adhesive through the nozzle onto the heel end of the insole while the nozzle is in contact therewith.

9. In a shoe machine having means for supporting a shoe comprising a last with an insole and upper materials assembled thereon, a molding band, wipers and power ope-rated mechanism for actuating said band and said wipers in predetermined sequence first to cause the band to embrace the upper materials and shape them to the heel end of the last and then to cause the wipers to advance and close to wipe the lasting margin of the upper materials inwardly over and to press it against the heel end of the insole, means for applying adhesive to the heel end of an insole of a shoe on the supporting means after the upper materials have been shaped to the last by the molding band and before the wipers are advanced and closed, said means comprising a nozzle member mounted for movement first to a position above the heel end of the shoe and toeward thereof, next downwardly and heelwardly into the pocket formed by the lasting margin of the upper held upstanding by the molding band and into contact with the insole and then upwardly away from the insole, means for so moving the nozzle member, a nozzle valve, means for yieldingly holding said valve in closed position, means for moving said valve to open position in response to engagement with the insole when the nozzle is in contact therewith, and means for extruding adhesive through the nozzle and onto the heel end of the insole while the nozzle is in contact therewith, and said valve member opened.

10. In a shoe machine having means for supporting a shoe comprising a last with an insole and upper materials assembled thereon, said supporting means including a jack and a shoe rest for engaging the heel end of the shoe, a molding band, wipers and power operated mechanism for actuating said band and said wipers in predetermined sequence first to cause the band to embrace the upper materials and shape them to the heel end of the last and then to cause the wipers to advance and close to wipe the lasting margin of the upper materials inwardly over and to press it against the heel end of the insole, means for applying adhesive to the heel end of the insole of a shoe on the supporting means after the upper materials have been shaped to the last by the molding band and before the wipers are advanced and closed, said means comprising a U-shaped nozzle member mounted for movement first to a position surrounding the shoe rest above the heel end of the shoe and toeward thereof, next downwardly and heelwardly into the pocket formed by the lasting margin of the upper held upstanding by the molding band and into contact with the insole and then upwardly away from the insole, means for so moving the nozzle member, a nozzle valve, means for yieldingly holding said valve in closed position, means for moving said valve to open position in response to engagement with the insole when the nozzle is in contact therewith, and means for extruding adhesive through the nozzle and onto the heel end of the insole while the nozzle is in contact therewith and said valve member opened.

11. In a shoe machine having means for supporting a shoe comprising a last with an insole and upper materials assembled thereon, a molding band, wipers, a carriage on p which the molding band is mounted, a power ope-rated supporting means after the upper materials have been shaped to the last by the molding band and before the wipers are advanced and closed, said means comprising a nozzle member mounted on the carriage for movement therewith first to a position above the heel end of the shoe and toeward thereof, next relatively to the carriage downwardly and heelwardly into the pocket formed by the lasting margin of the upper held upstanding by the molding band and into contact with the insole and then upwardly away from the insole, means for so moving the nozzle member, a nozzle valve, means for yieldingly holding said valve in closed position, and means for moving said valve to open position in response to engagement with the insole when the nozzle is in contact therewith, and means for extruding adhesive through the nozzle and onto the heel end of the insole while the nozzle is in contact therewith and said valve member opened.

12. In a shoe machine having means for supporting a shoe comprising a last with an insole and upper materials assembled thereon, said supporting means including a jack and a shoe rest for engaging the heel end of the shoe, a molding band, wipers, a carriage on which the molding band is mounted and power operated means for actuating said carriage and said wipers in predetermined sequence first to effect movement of the carriage to cause the band to embrace the upper materials and shape them to the heel end of the last and then to cause the wipers to advance and close to wipe the lasting margin of the upper materials inwardly over and to press it against the heel end of the insole, means for applying adhesive to the heel end of the insole of a shoe on the supporting means after the upper materials have been shaped to the last by the molding band and before the wipers are advanced and closed, said means comprising a U-shaped nozzle member mounted on the carriage for movement therewith first to a position surrounding the shoe rest above the heel end of the shoe and toeward thereof, as the band is caused to embrace the heel end of the shoe, next relatively to the carriage downwardly and heelwardly into the pocket formed by the lasting margin of the upper held upstanding by the molding band and into contact with the insole and then upwardly away from the ins-ole, means for so moving the nozzle member, a nozzle valve, means for yieldingly holding said valve in closed position, and means for moving said valve to open position in response to engagement with the insole when the nozzle is in contact therewith, and means for extruding adhesive through the nozzle and onto the heel end of the insole while the nozzle is in contact therewith and said valve member opened.

13. In a shoe machine having means for supporting a shoe comprising a last with an insole and upper materials assembled thereon, in an inclined position with its toe end lowermost, a molding band, wiper-s and power operated mechanism for actuating said band and wipers, means for applying adhesive to the heel end of an insole of a shoe on the supporting means, said means comprising a U-shaped nozzle having an operating surface formed with a U-shaped groove, said nozzle being disposed with its operating surfaces substantially parallel to, and being movable into contact with, the heel end of the insole of a shoe on the supporting means with the ends of its groove lowermost, means for extruding adhesive into the groove and thence onto the heel end of the insole of the shoe while the nozzle is in contact therewith, and means associated witr each end of the groove in the nozzle for collecting and retaining adhesive not Withdrawn from the groove and applied to the insole.

14. In a shoe machine having means for supporting a shoe comprising a last with an insole and upper materials assembled thereon, in an inclined position with its toe end lowermost, a molding band, wipers and power operated mechanism for actuating said band and wipers, means for applying adhesive to the heel end of an insole of a shoe on the supporting means, said means comprising a U-shaped nozzle having an operating surface formed with a U-shaped groove, said nozzle being disposed with its operating surface substantially parallel to, and being movable into contact with, the heel end of the insole of a shoe on the supporting means with the ends of its groove lowermost, means for extruding adhesive into the groove and thence onto the heel end of the insole of the shoe while the nozzle is in contact therewith, and means associated with each end of the groove in the nozzle for collecting and retaining adhesive not withdrawn from the groove and applied to the insole, said lasting means comprising a separate member covering a portion of the groove adjacent to each end thereof.

15. In a shoe machine having means for supporting a shoe comprsing a last with an insole and upper materials assembled thereon, in an inclined position with its toe end lowermost, a molding band, Wipers and power operated mechanism for actuating said band and wipers, means for applying adhesive to the heel end of an insole of a shoe on the supporting means, said means comprising a U-shaped nozzle having an operating surface formed with a U-shaped groove, said nozzle being disposed with its operating surface substantially parallel to, and being movable into contact with, the heel end of the insole of a shoe on the supporting means with the ends of its groove lowermost, means for extruding adhesive into the groove and thence onto the heel end of the insole of the shoe while the nozzle is in contact therewith, and means associated with each end of the groove in the nozzle for collecting and retaining adhesive not withdrawn from the groove and applied to the insole, said means comprising a separate member covering a portion of the groove adjacent each end thereof and provided with a number of openings of a size to retain adhesive which collects under the action of gravty, in said end portions of the groove while at the same time passing adhesive therethrough and onto the insole when adhesive is extruded into the groove.

References Cited by the Examiner UNITED STATES PATENTS Re. 25,596 6/1964 Weinschenk 12-10.l 2,309,981 2/1943 Randall 118-410 2,614,527 10/1952 Kamborian 118301 3,138,810 6/1964 Becker 1212.3

FRANK I. COHEN, Primary Examiner.

PATRICK D. LAWSON, Examiner.

Claims (1)

13. IN A SHOE MACHINE HAVING MEANS FOR SUPPORTING A SHOE COMPRISING A LAST WITH AN INSOLE AND UPPER MATERIALS ASSEMBLED THEREON, IN AN INCLINED POSITION WITH ITS TOE END LOWERMOST, A MOLDING BAND, WIPERS AND POWER OPERATED MECHANISM FOR ACTUATING SAID BAND AND WIPERS, MEANS FOR APPLYING ADHESIVE TO THE HEEL END OF AN INSOLE OF A SHOE ON THE SUPPORTING MEANS, SAID MEANS COMPRISING A U-SHAPED NOZZLE HAVING AN OPERATING SURFACE FORMED WITH A U-SHAPED GROOVE, SAID NOZZLE BEING DISPOSED WITH ITS OPERATING SURFACES SUBSTANTAILLY PARALLEL TO, AND BEING MOVABEL INTO CONTACT WITH, THE HEEL END OF THE INSOLE OF A SHOE ON THE SUPPORTING MEANS WITH THE ENDS OF ITS GROOVE LOWERMOST, MEANS FOR EXTRUDING ADHESIVE INTO THE GROOVE AND THENCE ONTO THE HEEL END OF THE INSOLE OF THE SHOE WHILE THE NOZZLE IS IN CONTACT THEREWITH, AND MEANS ASSOCIATED

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