US1849253A - Fastening inserting machine - Google Patents

Description

March l5, 1932. F. N. LA CHAPELLE FASTENING INS ERTING MACHINE Filed Feb. l2, 1929 U Figa.

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F. N. LA cHA`=ELLE FASTENING INSERTING MACHINE Filed Feb. 12. 19,29

March 15, 1932.

E Il I N Q J-x Ils Patented Mar. 15, 1932 UNH-#ED STATES PATENT i FEED N. LA CHAPELLE, or BEVERLY, MAssAcHUsE'rTs, AssIefNong To NITEnsoE MACHINERY CORPORATION, oE'yA'rERsoN', NEW JERSEY,v AvcoRPoEATIoSN or NEW JERSEY FASTENING INSERTING llllIACIHI'vIN-IE.

Application filed February 12,1929, Serial` No. 339,409, and in Great Britain August 1, 1928;

able that .the lengths of the pegs be varied in accordance Awith the thickness of the different portions of the shoe bottoms into vwhich they are driven. This gives the pegs maximum holding power and insures that they Will not pull out even from thin insoles. The heel seats of, for example, Goodyear Welt shoes are nailed or pegged on the last'and, accordingly, itis impossible to caliper the thickness of the shoe bottom as might be done if the operation Were performed o't'the last. It is practicable, however, as illustrated in an application of Letters Patentof the United States, Serial No. 314,468, tiled October 23, 1928, in the name or' Fred C. Eastman, to utilize the aivl of a fastening'insertingv machine to measure the thickness oishoe bottoms, the and coming to rest When it meets excessive resistance, as When it strikes an impenetrable member back of the shoe bottom, such as the metal heel plate or bottom plate of a last.

lt is an object of the invention to provide improved means applicable,'for example, to machines of the type used for heel seat nailing, by Which'the avvl may be permitted to come to rest Without injury to themachine when the awl meets excessive resistance, for example when it has passed through a shoe bottom and strikesthe ironheel-plate of a last on which the shoe is'mounted.

t is another object of the invention to l provide'a'machine for inserting astenings in the bottom of a shoe mounted on a last arranged to measure the thickness ofthe shoe bottom, to feed the shoe to and past the fastening inserting instrumentalities, and tolnsert in the shoe bottom fastenings each of a length corresponding to the, measured thickfastening instrumentalities or' a faste-ning inserting machine fastenings such as fiber pegs each of a length. determined by the thickness of the workpiece at the point,`

Where it is to be inserted.

lIn accordance with the foregoing,a feature,

the awland arranged to yield andpermit ther aWllto' come to rest When the aWl meets an excessive resistancein its Work penetrating movement: n I, Y y

In accordance with another feature-vof the inventionthe illustrated machine is provided With improved means for'. feedingl a strip' of liber astcningmaterial to and past fastening severing means, the length of each feeding movement of the fastening material being controlled by thedepth to Which the awl' of the machine has penetrated `the Work piece in forming, av hole for the reception of the fas'- tening-vvhicli is about to'be severed.

While the' invention is illustr'atediherein as embodied in a` 'fastening' inserting1 machine particularly adapted toV drivefibler pegs into the sole portions of shoes, for example in heel seat pegging, it should vbe noted that the invention is not limited-in its utility to such use or to embodiment in fastening. inserting machines ofthe type illustrated and, accord-V ingly, the construction disclosed herein should be' regarded as'merely one example of the,

forms in which my invention imay be'embodiedi .L 'f p i `Withthe above andother objects in View the invention Willnow be 'described with reference to the accompanying.'drawings`and pointed out in theclaims. v

l In the drawings, Y

VFiga-1 is a. side elevation of the headofya fastening inserting machinef'embodying' my invention; p y

Figff is a front elevation of the machine of Fig. l;

Fig is alongitudinal section of a spring connection shown lin Figs'. landl2 andfserv'- the heed 0f `ing to transmit.reciprocatingpmveieiitV to the aivlof thema/chine;

lon y' Fig. 4 is a sectional View on the line IV-IV of'Fig. 1;

Fig. 5 is a side elevation of the machine looking in the opposite direction to Fig. 1 and showing a cross section of a shoe upon a last and presented to the machine, as for the performance of the heel seat nailing or peggmg operation; and

Fig. 6 isa diagrammatic view showing how fiber severed from the material of the shoe bottom serves to cushion the end surface of the awl as the latter strikes the metal bottom plate of a last in the heel seat pegging operation.

The illustrated machine is of the general type disclosed in Letters Patent of the United States No. 1,030,775, granted June 25, 1912, on an application filed in the name of George Goddu, though organized to insert fiber pegs severed from a strip of fastening material lsuch as paper twine instead of loose nails.

The machine may be advantageously equipped with a work support of the character disclosed in Letters Patent of the United States No. 1,587,848, granted June 8, 1926, on an application led in the name of F.V L. Mackenzie, the pressure relieving mechanism being modified, if desired, as shown in Figs. 23 and 24 of Letters Patent of the United States No. 1,686,808, granted October 9, 1928, on an application filed in the names of George Goddu'and F. L. Mackenzie. Reference may be had to these patents for a full disclosure of such parts of the machine as it is unnecessary to illustrate herein.

The illustrated machine is provided with a column 10 carrying a head 12 on which are mounted the fastening inserting instrumentalities of the machine. rlhe column 10 also carries a worlr support terminating in a last pin 14 (Fig. 5) arranged to support a work piece such as a shoe 16 mounted upon a last 18 with its sole 20 in engagement with a presser plate orV abutment 22 carried by the head 12 of the machine. The shoe may be positioned relatively7 to the ,fastening inserting instrumentalities of the machine by a gage 24, which may take any suitable formi also carried by the head 12 of the machine.

Mounted in suitable bearings carried by the head of the machine is a camshaft carrying a cam member 32 provided with a series of cam grooves and surfaces arranged to operate the moving parts of the machine. Loose upon the 'cam shaft 32 near the rear end thereof is afpulley 36 driven from any suit.- able source `of power by ay belt 37. Slidably mounted on the shaft 30 is a clutch member 38 brake surface 44 arranged for V.movement into and out of braking relation with a brake surface 46 carried by the h'e'ad'12 of the machine. A spring 50 surrounding the shaft 30 tends to move the clutch member 38 into driving relation with the pulley 36, but permits the clutch member 38 to be moved away from the pulley 36 and into engagement with the brake surface 46 by power transmitted from a cam surface 52, with which the cam member 32 is provided, when the treadle rod 54 is depressed by a spring 55 upon the releasing of a treadle connected to the lower end of the rod 54. For a fuller disclosure of this mechanism, which formsno part of the present invention, reference may be had to Letters Patent of the United States No. 1,030,77 5 referred to above.

The machine is provided with a driver bar mounted for reciprocating movementin vertical ways carried by the head 12 of the machine adjacent to the forward end of the shaft 30. Clamped to the lower end of the driver bar 60 is a driver 62. The driver bar 60 is provided with a raclr 64 meshing with a wear segment 66 formed upon the end of the forwardly extending arm of a bell crank lever 68 fulcrumed at 70 to the head 12 of the machine and having a Adepending arm carrying at its lower end a roll positioned in a cam track 72 formed in the cam member 32.

An awl bar carrier (best shown in Fig. 2) is mounted for horizontal sliding movement at the front of the machine and mounted for vertical sliding movementv in ways formed in the awl bar carrier 80 is an awl bar 82 carrying at its lower end an awl 84. The rear surface of the awl bar 82 is provided with'a rack 86 meshing with a gear segment 88 formed upon the forward endof a lever 90 fulcrumed at 92 to the head 12 of the machine and provided with a pair of rearwardly eX- tending arms 94 and 96 (Fig. 1). The awl bar carrier 80 is reciprocated transversely of the machine by a lever fulcrumed to the head 12 of the machine and carrying a roll positioned in a cam groove formed in the rear surface of a cam disk 102 secured to the forward end of the shaft 30. The arm 96 of the lever 80 is yieldingly and adjustably connected to a bell crank lever 104 (Fig. 1) fulcrumed at 106 to the head 12 of the machine and carrying a cam roll positioned in a cam traclr 108 formed in theA cam member 32. Thus the awl 84serves both to form fastening receiving holes in a work piece pre- Y In order to permit the awl 84 to come to when it hits the metal bottom plate 110 (Figs. 5 and 6) ofthe'last 18, the connection between the arm 96 of the lever 90 and the Vbell crank lever 104 includes a bodily mov- 'ing spring 112 (see particularly ll`igs.'1 and 3) stiff' enough to transmit' sufficient power to 'the awl 84 to drive the awl into and` through the material of a shoe bottom with- `that it is compressed and permits the awl to come to rest' when it strikes the metal bottom 'plate 110 even though the bell crank lever 104 has not finished its rocking movement. Thus it will be seen that the extent of the downward movement of' the awl 84 beneath the lower surface of the presser plate 22 serves to measure the thickness of the layers of the bottom of the shoe mounted upon the last 18.'

TheV spring 112 surrounds a sleeve 114 (Fig. 3) pivoted at its lower end to the arm 96 of the lever 90vand carrying at its upper end a nut 116 which serves as an abutment for theV upper end of the spring 112. The lower end of the spring 112 abuts against a collar 118 slidingly mounted on the sleeve 114 and carried at the lower end of a pair of parallel bars 120 pivoted at their upper ends to a short sleeve'122 (Fig. 4) carried by a 'stud 124 adjustably mounted in a slide-way 126- formed in the forwardly extended arm of the bell crank levery 104. A nut 128 is threaded upon the outer end of the stud 124 and engages a washer 130 bearing against the 'outer surface of the upper endof the parallel bary member 120. The stud 124 is thus adjustably secured to the bell crank' leverv 104 which maybe provided with a scale 182 (Fig. 1) to indicate the depth of the fastening rece-iving holes formed by the full stroke of the awl at the various positions of adjustment of the stud 124. Clamped to the nut 116 is a bearing member 134 engaging machined surfaces 136 formed upon the parallel bars 120 and serving to prevent relative displacement (other than lengthwise) of the members 11,4

and 120.

The fiber fastening material 140 from which the pegs inserted by the machine are [severed is carried by a reel 142 mounted upon a bracket 144 secured to thehead 12V of the machine. The strip 140 of fiber fastening material is engaged'by a feed -dog'146' (Fig. 2) of the feedingmechanism, which will presently be described, and by a spring 'pressed holding dog 148 designed to prevent retrograde movement of the fastening ma.- terial, after which it enters'aV passage-way 150 the lower end ofy which is in `alinement with the driver passage of a forwardly and rearwardly reciprocating throat member 152 when the latter is in its rear-most position. Forward movement of the throat member 152 thus serves to sever a peg-from the fastening material 140 and the length of this peg, as hereinafter described, is determined by the awl stroke, that is by the distance which the awl has penetrated the work piece before being brought to rest by striking` the metal heel plate 110 of the last. Thethroat member 152 is carried by the forward end of a bar 154 (Fig. 5) mounted for forward and rearv-Ward movement' in Ways carriedl by the head 12 ofthe machine and provided near its rear end with a rack 156 engaging a gear segment 158 formed at the lower end of a lever 160 fulcrumed at 162 to the head 12 of the machine and provided with aroll positioned in a cam track 164 formed in the cam member The feed dog 146 (Fig. 2) is pivot-ed to the end of a pair of parallel links 170 pivoted at 172 to a pair of ears depending froma block 174v formed at the lower end of a tubular member 176 which forms a guide for the fastening material 140 and is mounted for reciprocating movement lengthwise of the strip of' fastening material 140. in a slide-way formed in a bracket 178 secured to: the head 12 of the machine. The extent of the `reciprocation of the block 174 will, of course, determine the length of fastening material fed. Accordingly, the machine is so organized that -the reoiprocation of the block 174 is controlled by the awl bar 82v and bearsa definite relation to the distance which the awl is projected below the presser plate 22 Y of the machine in each cycle of operation.

Accordingly, the block 174 is pivoted to a block 179 mounted in slideways formed at the forward end of a lever 180 fulcrumed at 182 to the head 12 ofthe machine and having a rearwardly and upwardly `extending the work, that movement being transmitted through a rod 198 to mechanism of the character disclosed in Letters Patent of the United States No. 1,587,848, modified if desired as shown in Figs. 23 and 24 of Letters Patent ofthe United States No. 1,686,808.

At its rear end the link 186 is provided w ith a slide member positioned in an arcuate 95 arm pivoted at 184 to the forward end of a 't slot 200 formed in the upwardly and rear wardly extending end of a lever 202 fulcrumed at 204. to the head 12 of the machine and having a forwardly extending arm pro# vided with a gear segment 206 meshing with a gear segment 208 formed upon the arm'94 ofthe lever 9.0.` Thus it will be seen that the llever 202 will 'be rocked through an `angle which is determined by the extent of the reciprocation of the awl bar 82. The slot 200 has a radius of curvature equalto the effective length of the link 186, andthelever 202 is so positioned that the slot 200 is concentricwith the` pivot 184 `between the lever 180 and the link 186 when the parts are in the position which they occupy when the entering end of the awl 84 is flush with the lower surface of the presser plate 22. As the awl 84 descends below this position the lever 202 is rocked in a counter-clockwise direction, as viewed in Fig. 5, the extent of this rocking movement' depending upon the distance which the awl moves before it is stopped by impact with the metal plate 11() of the last 18; Thus the rocking movement of the lever 192, which is uniform in each cycle of operation of the machine, is varied as it is transmitted to the lever 180, the extent of the rocking movement of the lever 180 increasing` with the increased eccentricity of the slot 200 relatively to the pivot 184 caused by an increased work penetrating movement of the awl 84.

The bolt and slot adjustment 190 vbetween the lever 192 and the link v188 permits the length of the lfastening material fed to be increased a greateror lesser amount over the thickness of the work piece penetrated by the awl 84 so as to allow for the heading of the fastening which takes place if the fastening is somewhat longer than the thickness. of the work piece in which it is inserted.

.In the operation of the machine the last 18 upon which the shoe 16 is mounted is placed 'on the last pin 14 of the work support, the shoe being positioned by the gage 24 in the manner usual in performing the heel seat nailing operation. W hen the machine 'is started the awl 84-is thrust downwardly into the sole until its lower end comes substantially into Contact with the metal bottom plate 110 of the last, being cushioned, however, by a small amount of leatheriiber (as Vshown at 210 in Fig. 6) severed by the awl as it passes through the outsole and the other layers .of the shoe bottoni. Preferably, in order to augment this cushion effect, the awl is cylindrical in form and is provided with a plane entering end formed at right angles to the longitudinal axis of the awl. When the awl strikes the metal bottom plate 110 of the last, the spring 112 is compressed so that the bell crank lever 104 is enabled to complete its rocking movement in a clockwise direction, as viewed in Fig. 1. The awlris then moved transversely to the left, as viewed in Fig. 2, feeding the work piece and bringing the awl into tho line of drive. Y The awl isthen withdrawn and returned to the position which it occupied at the beginning of the cycle lof operation. The work piercing or penetrating movement of the awl which has just been describedv is'effective, through the connection between the awl bar 82 and the lever 202,to rock the lever 202 in a counterclockwise direction, as viewed in Fig. 5, to a position which is determined by the thickness of the shoe bottom' as measured by movement of the awl, thus controlling the angular relationv between the link 186 onV the one hand trates. The fastening material is then severed by the forward movement of the throat member 152 and is brought forwardv into line with the driver 62 which descends to drive the fastening into the hole formed by vthe awl 84 in the shoe bottom.

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

1. A fastening inserting machine having, in combination, means Vfor measuring the thickness of the bottom of a shoe mounted on va last, means for inserting in the bottom of the shoe fastenings of a length corresponding to the measured thickness of the shoe bottom, and means for feeding the shoe to and past the fastening inserting means between the insertion of successive fastenings.

2. In a fastening inserting machine, the combination of an awl carrier, an awl carried thereby, and means for reciprocating the awl carrier` thereby thrusting the awl into a work piece presented thereto and including a spring serving to transmit reciprocating motion to the awl carrier, said spring being substantially unyielding during the work penetrating movement of the awl but arranged to yield when the awl meets an excessive resistance.

3. In a fastening inserting machine, the

combination of an awl, means for operating the awl to form fastening receiving holes in a work piece presented thereto including a spring substantially unyielding during the work penetrating movement of the awl but arranged to yield when the awl meets an eX- cessive resistance in its work-penetrating movement, and means for operating the awl to feed the work piece.

41 In a. fastening inserting machine, the combination of an awl, means for operating the awl to form fastening receiving holes in a work piece presented theretoV including a spring bodily movable to transmit workpenetrating movementA to the awl and arranged to yield when the awl meets an eX- cessive resistance in its work-penetrating movement, a driver, and means for operating the driver to drive fastenings into the holes formed by the awl.

5. In a fastening inserting machine, the combination of an awl carrier, an aWl carried thereby, means for reciprocating the awl carrier including av spring bodily movable to L the avvl meets an impenetrable member back of the Work piece, Whereby the length of the awl stroke is dependent upon the thickness of the Work piece, means for severing fasten- 'ings from a strip of fastening material, means `for feeding the strip of fastening material past the severing means arranged to lcause the length of material fed prior to the severing of each fastening to correspond to the thickness of the material through Which the aWl has penetratedy in forming the hole for that; fastening, and adriver arranged toin- Y sert fastenings in the holes formed by the aWl in the Work piece.

16. A fastening inserting machine having, in combination, a driver, means for recipro- :ating the driver to insert fastenings in a Work piece pr-esented thereto,` an aWl, mea-ns for causing the avvl to penetrate the Work to a depth determined by the thickness of the Work and to feed the Work to bring the hole formed by the avvl into alineinent with the driver .and then to Withdraw from the Work,

.. and means for presenting for insertion by the driver fastenings of a length determined by the depth to which theavvl has penetrated the Work in forming the holes for the respective fastenings.

17. Afastening inserting machine having,

in combination, al driver, means for recipro eating the driver to insert fastenings in a Work piece presented thereto, an aWl, means for causing the avvl to penetrate the Work to a depth deterniinedby the thickness of the Work and to feedthe Work to bring the hole formedby the aivl into alinement With the driverV andythen to ivithdravv from thework,

ik andV means constructed and arranged to sever from a strip of fastening material a fastening of a length determined bythe depth to Vwhich the a'Wl haspenetrated the Work and to present the lfastening for insertion by the driver in the hole.

18. A fastening inserting machine having,

`in combination,means for piercing a Work vpieceinto Which a fastening is to be inserted,

thicknessof the Work piece as measured Vby said piercing means.

19. YA fastening inserting machine having, in combination, an aivl arranged to penetrate a Work piece and'to be stopped by an impenetrable member back'of the Work piece, means for severing fastenings from'a strip of fasteningmaterial, and means for feeding the strip of fastening material tothe severing means including a lever the extentoftherocking of which determines the length of the feeding movement imparted to the strip and hence determines the length of the fastenings severed, and means for rocking said lever lthrough a path, the extent of which is determined by the thickness of the Work piece penetrated by the aWl.

20. A fastening inserting machine having, in combination, an awl and means for recip-Ll rocating the avvl to forni fastening receiving holes in a Work piece presented thereto comprising a lever, means for rocking said-lever, a second lever arranged by its rocking movement'to reciprocate the aivl, and a spring connecting the two levers arranged to permit the first lever to continue,v its rocking movement when the second lever is no longer able to rock by reason of the avvl having met an excessive resistance in its Work-penetrating movement. f

21. A rfastening inserting machine having, in combination, an awl and means for reciprocating the aWlto form fastening receiving holes in a Work piece presentedthereto comprising a cam`,a lever rockedby the cam, a second lever arrangedby its rocking movement to reciprocate the aWl, and a spring connecting the tivo levers arranged to transmit rocking movement from Vthe i'irst lever to the second lever and to permit the first lever to continue its rocking' movement When the second lever is no longer able to rock by reason of the awl having met an impenetrable member by Which the VWork piece is backed up. l

22. A fastening inserting machine having, in combination', an aivl, means for reciprocating the awl through a path the length of which is determined by the thickness of the Work piece into which the avvl is inserted,"a rack arranged to reciprocate with the awl, a lever having a gear sector engaging With said rack and thus rocked through an an glethe extent of Which is determined by the thickness of the Work piece into which the aivl is inserted, and means controlled by said lever for severing from a strip of fastening material fastenings of a length corresponding to the thickness of the Work piece at the points Where the respective fastenings are to be inserted.

23. A fastening inserting machine having, in combination an vaivl bar, an avvl carried thereby, means for reciprocating the aWl through a path the length ofV Whicli'is determined by the thickness of the ,Work piece into Which the avvl is inserted, a rack formed on the aWl bar, a lever having a gear sectorengaging with said rack and thus rocked through anangle the extent of Which is determinedmby the thickness of the Work piece into Y Which the .aivl is inserted, and means controlled by said lever for severing from ai. Vstrip of fastening material fastenings of av length corresponding to the thickness of the work piece at the points where the respective fastenings are to be inserted.

24. A fastening inserting machine having, in combination, an awl, an awl bar by which the awl is carried, a lever arranged by its rocking movement to reciprocate the awl bar, another lever, a cam arranged to rock said last-named lever, and a spring connecting the two levers constructed and arranged to permit the last-named lever to complete its normal rocking movement even though the firstnamed lever is prevented from rocking by reason of the engagement of the awl with an impenetrable member.

25. A fastening inserting machine having, in combination, an awl, an awl bar by which the awl is carried, a lever arranged by its rocking movement to reciprocate the awl bar thereby causing the awl to penetrate a workpiece presented thereto, means for moving the awl transversely of its work-penetrating movement to cause the awl to feed the work piece, another' lever, a closed cam arranged positively to rock said last-named lever, and a compression spring connecting the two levers constructed and arranged to permit the last-named lever to complete its normal rocking movement even though the firstnamed lever is prevented from rocking by reason of the engagement of the awl with an impenetrable member. Y

26. A fastening inserting machine having, in combination, means operativein each cycle of operation of the machine for measuring the thickness of a work piece into which fastenings are to be inserted, a con-` trolling lever rocked byV said measuring means through an angle in each cycle of operation the extent of which is determined by the measured thickness of the work piece, a lever rocked through a uniform angle in each cycle of operation of the machine, means for engaging a strip of fastening material and operable to feed the fastening material,a feed lever connected to said means the extent of the rocking movement ofwhich determines the length of fastening material fed, and connections between the three levers constructed and arranged to cause the uniformly rocked lever to transmit to the feed lever rocking movement the extent of which is determined by the position to which the controlling lever` is rocked.

27. A fastening inserting' machine having, in combination, means for measuring the thickness of a work piece, a driver arranged to insert fastenings in the work piece, and means for presenting fastenings to the driver including mechanism arranged to control the length of the various fastenings in accordance with the measured thickness of the work piece at the point where the respective fastenings are to be inserted, said mechanism comprising a lever the extent of the rocking movement of which in each cycleV of ,operation of the machinedetermines the` length of the fastening inserted in that cycle, a second lever rocked through a constant angle in each cycle of operation, and variable connections between the two levers constructed and arranged to cause the constantly rocked lever to rock the other lever through an angle the extent of which in each cycle of operation is determined by the measured thickness of the work piece att-he point where a fastening' is to be inserted in that cycle of operation. i

28. A fastening inserting machine having, in combination, an awl arranged to penetrate a Work piece and to be stopped by striking an impenetrable `member back of the Work piece, a controlling lever, connections between the awl and said lever constructed and arranged to rock said lever through an angle the extent of which is determined by the thickness of the work piece at the point Where it is penetrated by the awl', a lever rocked through a uniform angle in each cycle of operation of the machine, means for engaging av strip of fastening material and operable to feed the fastening material, a feed lever connected to said means the extent of the rocking movement of which determines the length of fastening inaterialfed, and connections between the three levers constructed and arranged to ycause the uniformly rocked leverto transmit to the feed lever rocking movement the extent of which is determined by the position to which the controlling lever is rocked. e

29. Av fastening inserting machine having, in combination, an awl arranged to penetrate a work piece and to be'stopped by animpenetrable member back of the work piece, a driver arranged to insert fastenings in the holes formed by the awl in the work piece,

and means for presenting fastenings to the driver including mechanism arranged to control the length of the various fastenings in accordance with the measured thickness of the work piece at the point where the respective fastenings are to be inserted, said mechanism comprising a lever the extent of the rocking movement of which determines the length of a fastening, a second leverrocked through a constant angle in each cycle of operation of the machine, and variable connections between the two levers arranged to cause the constantly rockedlever to rock the other lever through an angle the extentof which is determined-by the extent of thek work piece penetrating movement of the awl. In testimony whereof I have signed my name to this specification.

`FRED N. LA CHAPELLE.

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