US2623223A - Device for use in making sliplasted shoes - Google Patents

Description

Dec. 30, 1952 P. w. SENFLEBEN 2,623,223

DEVICE FOR USE IN MAKING SLIP-LASTED SHOES Filed Jan. 4, 1949 2' SHEETSSHEET .1

fizz/"6n for Paul h/Serzfle ban Dec. 30, 1952 P. w. SENFLEBEN DEVICE FOR USE IN MAKING SLIP-LASTED SHOES Filed Jan. 4, 1949 2 SHEETS-SHEET 2 fizz/672 for Paul WSen/Zeben B: h is/izforney Patented Dec. 30, 1952 DEVICE FOR USE IN MAKING SLIP- LASTED SHOES Paul W. Senfleben, Maiden, Mass, assignor to United Shoe Machinery Corporation, Flemington, N. 3., a corporation of New Jersey Application January 4, 1949, Serial No. 69,151

4 Claims.

This invention relates to devices for use in shoemaking and is illustrated as embodied in improved devices for facilitating the spotting of platforms or platform units upon slip-lasted shoes.

The present invention consists in the novel features hereinafter described, reference being had to the accompanying drawings, which illustrate embodiments of the invention, said invention being fully disclosed in the following description and claims.

In the accompanying drawings,

Fig. 1 is a perspective view of a slip-lasted shoe in the proper stage of its manufacture to receive a platform unit in accordance with my method;

Fig. 2 shows in perspective a platform unit which is to be spotted and attached to the shoe illustrated in Fig. 1;

Fig. 3 is a side view, partly in section and partly broken away, showing one illustrative device for use in spotting the platform unit shown in Fig. 2 upon the slip-lasted shoe shown in Fig. 1;

Fig. 4-. is a View on line IV-IV of Fig. 3 showing in plan a flexible U-shaped band and mechanism for varying the width of said band;

Fig. 5 is a view showing in side elevation, partly broken away, the position of the rear portion of a platform unit cover of the shoe operated upon by the band at the time said cover is ready to receive, and after it has received the platform unit; and

Fig. 6 shows in side elevation a modified device for use in spotting platform units in slip-lasted shoes such as shown in Fig. l and also for use in spotting heels upon slip-lasted shoes to which platforms have been attached.

The present invention is described as embodied in devices (Figs. 3, 4 and 5) and 22 (Fig. 6) for use in spotting a platform unit 24 (Figs. 2 and 5) upon a slip-lasted shoe 26 (Figs. 1, 3, 5 and 6) which is mounted upon a last 28 and has the rear half or heel seat portion 30 of its platform unit cover 32 turned right side out and.

forming with a heel seat portion of an insole or sock lining 34 of the shoe a pocket 3'6 (Figs. 1 and 3). The platform unit 24 comprises a platform 38 and a heel portion 49 which are secured together by staples 42 (Fig. 2).

As is well known to those skilled in the art, in the manufacture of the slip-lasted shoe 26 an upper it (Figs. 1, 3 and 5) and the sock lining 34 are united, off the last 28, together with the plat form unit cover 32 which is subsequently wrapped around the periphery of the platform or platform unit 2d. The platform unit cover 32 is usually sewed into a seam 46 which joins the sock lining 34 to the upper t l, in such a position that it is presented inside out and hugging the shoe upper. In the illustrative shoe 26 only a front half 48 of the platform unit cover 32 is shown as turned inside out or hugging the shoe upper, the rear half of said cover being turned right side out as above described.

It is common practice to insert the last 28 in the shoe 26 with the front and rear halves 48, 38 of the platform unit cover 32 turned back or inside out and hugging the shoe upper 48 and the last, since a platform unit 24 can be quickly and effectively positioned upon and secured to the sock lining 34 when the platform unit cover 32 is thus positioned. However, in view of the difficulty of turning the rear half 38 of the platform unit cover 32 right side out around the rear portion of said platform unit 24 from its inside-out position hugging the shoe upper 24 and in open heel shoes also hugging the last 28, I propose when inserting the last in the shoe to have the forepart t8 only of the platform unit cover 32 turned back and inside out in hugging relation with the shoe, the rear half it! of the platform unit cover being left projecting right side out and forming the pocket 35 with the sock lining 34. When the rear half 36 of the platform unit cover 32 is thus positioned it will be noted (Figs. 1 and 3) that in an open heel shoe the rear end of the seam 4E5 along which the shoe upper 44, the sock lining 3d and the platform unit cover 32 are joined is somewhat wavy lengthwise and is spaced from a heel plate 56 of the last 28, the rear end of the seam 66 being displaced somewhat forwardly of the rear end of the heel plate of the last. The heel plate 50 which has a U-shaped marginal edge or rim constitutes the heel portion of the bottom of the last or the heel seat of the last and will be considered as part of the last. In making slip-lasted shoes the heel plate 58 is not necessary but most of the lasts are equipped with such plates so that the lasts may be used on regular work.

Prior to spotting the platform unit 26 upon the sock lining 3 it is desirable that the rear end of the seam shall be circumferentially spread so as to lie in a plane and shall be arranged substantially adjacent to but slightly within the edge of the heel plate 59 of the last 28. To cause, without the use of some suitable device, the rear end portion of the seam it to lie in a plane along the rear edge of the heel plate of the last 28 While spotting the platform unit 24 upon the sock lining 34 is a slow and laborious operation. Moreover, when the platform unit 24 is spotted by hand it is the best practice to apply cement to an inner surface 52 (Fig. 2) of said unit only forward of the ball line of the said unit because cement rearward of said line interferes with the effective shifting of the heel end of the platform unit in the pocket 36 during the spotting operation. It is of course desirable that cement be applied if practicable to the entire inner surface 52 of the platform unit 24 so that said unit shall adhere throughout its length to sock lining 34.

With the above considerations in view there is provided the device 26 (Figs. 3', 4 and 5) which comprises a pedestal 54 (Figs. 3 and 6) having secured to it by bolts 56 a horizontal platform or table 58. Formed in the table 58 is an undercut rectilinear guideway 66 in which slides a block 62 upon which is mounted a last pin 64 laterally shiftable to a slight extent to accommodate pin holes 68 (Fig. 3) in right and left lasts. Rotatably mounted upon a pivot pin 68 carried by the block 52 is a pair of rollers I which are constantly urged by a spring I2, opposite ends of which are attached to the block 62 and to the table 58, into engagement with a pair of arms 74 secured to a fulcrum pin 'IG mounted in bores of a depending flange of a bracket I3 secured by bolts 82 to the table 58. Also secured to the fulcrum pin I6 is an arm 82. The bracket i8 may be regarded as part of the table 58.

Mounted for reciprocation in a bore or guideway 84 of the bracket '58 is a rod or carrier 86 the lower end of which is secured to a header 88 carrying cap screws 95 fitting in elongated slots 92 of a bifurcated portion of an arm 94 which is pivoted upon the fulcrum pin 76. Pinned to the upper end of the rod 86 is a boss 96 (Figs. 3 and of a bar 58 (Figs. 3, 4 and 5) to one end of which is riveted the bight portion of a flexible or adjustable U-shaped band or former I00. The rod 86 is constantly urged upward by a weak spring I02 the upper end of which is attached to the bracket It and the lower end of which is attached to the arm 94. Pivotally mounted upon a threaded pivot stud I24 carried by the bar 98 is a pair of offset levers I06 comprising hand grips m8 and lower arms III] having at their forward ends holes for receiving pins I I2 secured to upper end portions of the band I00. The band I00 may be opened or closed by manually moving the hand grips I28 toward or away from one another. In order to retain the band Hit in its adjusted position there is pivoted to one of the hand grips I08 a ratchet I I4 which is forced by a spring-pressed plunger H6 against a pawl II8 carried by the opposite hand grip.

Mounted upon a shoulder screw I (Fig. 3) threaded into the arm 94 is a c-shaped lever 422 pivotally connected by a link I24 to the arm 62. Pivoted to the central part of the C-shaped lever 22 is a rod I26 which is operatively connected to a treadle I23 pivotally mounted in the pedestal 54 and constantly urge-d upward by a strong spring I39.

After placing the last 28 upon which the shoe 26 is mounted, upon the pin 64 of the slidable block 62, the treadle I28 is depressed causing the U-shaped band Hill to enter the pocket 36 formed by the sock lining 34 and the upstanding rear half 32 of the platform unit cover 32. Such motion is effected by rotating the arm 94 against the action of the weak spring I02 about the fulcrum pin [6, the arms I4, which constitute stops for the block 62, at this time held against the bracket 78 by the spring 12 and accordingly the arm 82 partly because of the presence of the spring 12 and partly because of the construction and arrangement of the treadle operated arms and levers, being held stationary. As the U-shaped band ISO is lowered it engages the sock lining 34 just within the seam 46 and comes to rest. At this stage of the operation the operator ceases to depress the treadle I28 and manually swings the hand grips I68 toward one another with the result that the lateral lower end portions of the U-shaped band I00 wipe the lateral heel seat portions of the sock lining outwardly and move to a position just outside the seam, said seam assuming a U-shape substantially the same as the outline of the heel plate 50 of the last 28. After expanding the band I00 the operator releases the grips I03, the band being prevented from collapsing by the engagement of teeth of the ratchet H4 with the pawl II8. It will be understood that when the sock lining 34 is smoothed or spread out it has an outline similar to the outline of the bottom of the last.

When the U-shaped band I09 has been suitably adjusted to spread or open up the pocket 36 to its proper shape, depression of the treadle I23 is continued, thereby causing counterclockwise rotation (Fig. l) of the fulcrum pin IS in the bracket '58 and accordingly movement of the block 62 and the last 28 in a direction I32 until the rear end of the U-shaped band I00 slides over the rear end of the seam 46 and assumes a position just above the rear end of the heel plate 56 of the last, as illustrated in Fig. 5 While the rear half 30 of the platform unit cover 32 is thus held the platform unit 24, which as illustrated consists of the platform 38 and the wood heel portion 40 and the entire inner surface 52 of which is coated with cement, is spotted upon the sock lining 34 of the shoe, the heel seat rim of said unit resting upon the seam. After spotting the platform unit 24 upon the sock lining 34, the unit is tapped with a hammer to cause said unit to adhere to the sock lining. The treadle I28 is then released and is raised by the action of the spring I35), causing the arms I4 to move back against the bracket I8 and,

assisted by the spring I92, the U-shaped band I30 to move upward to its raised position from its position between the platform unit cover 30 and the platform unit 24, the block 62 then moving back under the action of the spring 12 to its initial position in which its rollers are in engagement with the arms I4. The guideway 32 of the bracket I8 of the table 58 may be described as lying in substantially the same plane as and as being inclined to the guideway (it.

By the use of the above-described device 29 the seam along which the upper 44, the sock lining and the platform cover 32 are joined extends substantially along the entire edge of the bottom of the last 28 and retains such position while the platform unit 24 is being spotted upon and adhesively secured to the shoe, the U-shaped band I26, in addition, providing entry to the pocket 36 and serving to position the rear end portion of the seam it so that the platform unit 24 may be immediately spotted without having to shift portions of the sock lining 3i and the rear half 35 of the platform unit cover 32. It will thus be apparent that the entire inner surface 52 of the platform unit 24 may be coated with cement, since during the spotting operation no feeling or shifting of the platform unit 24 with relation to the shoe is necessary.

When the shoe 23, mounted on the last 28, has been removed from the device it is finished by conventional methods well known to those skilled in the art.

The above described device which is claimed in applicant's co-pending application Serial No. 284,303, filed April 25, 1952, if desirable, may be replaced by the modified device 22 (Fig. 6). This modified device which is claimed herein, comprises treadle mechanism such as above described, the pivot screw I20 being permanently secured to the bracket I8 and the U-shaped flexible band I00 and operating mechanism therefor being omitted. In the device 22 there is mounted upon a pivot pin I34, which is mounted in a yoke I 36 secured by bolts I38 to the bracket IS, a pair of arms I40 carrying a bar I42 which when swung into its operating position lies on the platform unit and is provided with a face I44 constructed and arranged to be enga ed by a breast lip I45 of the heel portion 40 of the platform unit 24.

In the operation of the device 22 the last 28 upon which the shoe 28 is mounted is placed upon the pin 64, and the platform unit 24, the inner surface 52 of which has been coated with cement forward of its ball line, is manually inserted in the pocket 36 without pressing the forepart of said unit a ainst the sock lining 34. The operator then depresses the treadle I23 causin the last 28 to be moved in the direction I32 with the result that the heel portion 40 of the platform unit 24 is moved downward and rearward with relation to the shoe into place. It will be noted that the pivot pin I34 is located a substantial distance below the heel plates 50 of the last 28. The heightwise position of the pivot pin I34 may be varied to vary the vertical component of thrust imparted to the platform unit 24 by the bar I44. The operator then taps the forepart of the p atform unit 24 after it has been properly spotted against the sock lining 34, the heel portion 40 of said unit being held in place in the pocket of the rear half of the platform cover 32.

In the manufacture of slip-lasted shoes the platform 38 is sometimes spotted and cemented to the sock lining 34 as a separate unit while the entire platform unit cover 32, which may be described as a platform and heel cover, is turned inside out in hugging relation with the shoe and the last. After cementing the platform 38 to the sock lining 34 the rear half 30 of the cover 32 is turned right side out to its position shown in Fig. 6. The last 28 upon which the shoe 26 is mounted is then positioned upon the pin 64 and a separate heel which is similar to the heel portion 40 of the platform unit 24 and has its inner surface coated with fluid cement is placed in the pocket 36 upon the platform. The operator then swings the arms I40 about the pivot pin I34 to move the bar I42 against the platform and against the breast lip of the heel and depresses the treadle I28 causing the platform and the rear half 30 of the platform unit cover 32 to be forced against the heel, the heel when properly spotted being tapped to secure it to the platform.

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 device for spotting a heel upon the 6 heel portion of the platform of a slip-lasted shoe which is mounted upon a last with its heel cover turned right side out to form a pocket with the rear end of the platform, a support for the shoe on its last, a bar movable into engagement with the platform and with a lip of the heel inserted in the pocket, and means for effecting relative movement of the support and the bar generally lengthwise of the shoe to force L the bar and the lip portion of the heel together and to press the heel against the platform and against the rear portion of the heel cover in order effectively to spot the heel.

2. In a device for spotting a heel upon the heel portion of the platform of a slip-lasted shoe which is mounted upon a last with its heel cover turned right-side out to form a pocket with the rear end of the platform, a table provided with a guideway, a support for the shoe on its last mounted in and movable along said guideway, a bar associated with said table and movable into engagement with the platform and with a lip of the heel inserted in the pocket, and mechanism for moving the shoe support along said guideway to force the bar and the lip portion of the heel together and to press the heel against the platform and against the rear portion of the heel cover in order effectively to spot the heel.

3. In a device for spotting the heel end of a platform unit on the heel portion of the sock lining of a slip-lasted shoe mounted upon a last with its heel cover turned right side out to form a pocket with the sock lining, a support for the shoe on its last, a bar movable into engagement with the platform and with a lip of the heel portion of a platform unit inserted in the pocket, and means for effecting relative movement of the support and the bar generally lengthwise of the shoe to force the bar and the lip of the heel portion together and to press the heel end of the platform unit against the sock lining and against the rear portion of the heel cover in order effectively to spot the heel end of the platform.

4. In a device for spotting the heel end of a platform unit on the heel portion of the sock lining of a slip-lasted shoe mounted upon a last with its heel cover turned right side out to form a pocket with the sock lining, a table provided with a guideway, a support for the shoe on its last mounted in and movable along said guideway, a bar associated with said table and movable into engagement with the platform and with a lip of the heel portion of a platform unit inserted in the pocket, and mechanism for moving the shoe support along said guideway to force the bar and the lip of the heel portion of the platform unit together and to press the heel end of the platform unit against the sock lining and against the rear portion of the heel cover in order effectively to spot the heel end of the platform unit.

PAUL W. SENFLEBEN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 649,379 Sheill May 15, 1900 1,742,280 Richardson et al. Jan. '7, 1930 2,341,675 Walsh Feb. 15, 1944 FOREIGN PATENTS Number Country Date 258,220 Germany Mar. 31, 1913 582,500 France Oct. 16, 1924

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