US1963171A

US1963171A - Fastening inserting mechanism

Info

Publication number: US1963171A
Application number: US673334A
Authority: US
Inventors: Robert H Lawson
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1932-03-25
Filing date: 1933-05-29
Publication date: 1934-06-19
Anticipated expiration: 1951-06-19

Description

Original Filed March 25, 1932 7 Sheets-Sheet l June 19, 1934. R. H. LAWSON FASTENING INSERTING MECHANISM Original Filed March 25, 1932 7 Sheets-Sheet June 19, 1934. R. H. LAWSON FASTENING INSERTING MECHANISM Original Filed March 25, 1932 7 Sheets-Sheet 3 June 19, 1934. R. H. LAWSON FASTENING INSERTING MECHANISM Original Filed March 25, 1932 7 Sheets-Sheet 4 z June 19, 1934. R. H. LAWSON FASTENING INSERTING MECHANISM '7 Sheets-Sheet 5 Original Filed March 25, 1932 June 19, 1934. R. H. LAWSON 1,963,171

FASTENING INSERTING MECHANISM Original Filed March 25, 1932 7 Sheets-Sheet 6 Fig v I I 304- 0 8 hum 727m June 19, 1934. R. H. LAWSON FASTENING INSERTING MECHANISM Original Filed March 25, 1932 '7 Sheets-Sheet 7 igll.

Ami/V705; QM

Patented June 19, 1934 UNITED STATES PATENT ()FFICE FASTENING iNsearnve MECHANISM Original application March 25, 1932, Serial No. 601,082. Divided and this application May 29,

1933, Serial No. 673,334

31 Claims.

This invention relates to fastening inserting mechanisms and is illustrated herein as embodied in a lasting machine of the type disclosed in my copending application for Letters Patent of the United States Serial No. 601,082, filed March 25, 1932, of which this application is a division.

The machine of my copending application is arranged to work a shoe upper into lasted relation to a last and to an insole on the last and to secure its marginal portion in lasted relation to the insole and last respectively by driven fastenings. The machine is provided with a jack arranged to support a iast having a shoe upper and a ribbed insole positioned thereon and with a pair of lasting units provided with grippers and wipers for pulling the upper over the last and working it into lasted relation to the last and insole and means for securing the upper permanently in lasted relation to the insole by one set of fastenings, which are inserted through the upper and the rib of the insole, and temporarily in lasted relation to the last by another set of fastenings which are inserted through the upper and insole and into the last at the base of the rib and which serve as additional holding means to prevent displacement of the rib and the shoe upper. The lasting units are located one upon each side of the shoe to be operated upon and by relative movement of the units and the jack the lasting operation is performed progressively from the heel breast line forwardly to the tip line at the toe end of .the shoe. The machine moreover is provided with means constructed and arranged to operate in time relation to the longitudinal movements of the shoe for rotating the units about axes which extend in directions substantially at right angles to the plane of the shoe bottom to maintain the shoe upper engaging surfaces of the grippers substantially parallel to the portions of the shoe upper to be gripped and to cause the overlaying and securing means to operate in paths substantially normal to the rib of the insole thus compensating for the edge curvatures of the shoe bottom;

It is an object of he present invention to provide improved staple forming and inserting mechanism and tack driving mechanism which may be advantageously applied to a lasting machine of, for example, the type shown and described in my copending application above mentioned and which may be operated simultaneously to secure the upper permanently to the insole and temporarily to the last.

In the construction shown, there are provided staple forming and inserting mechanism and tack driving mechanism for each lasting unit which mechanisms are carried by separate slides which are movable toward and from the work and which are provided with nozzles through which staples and tacks are driven to secure the upper permanently in lasted relation to the insole and temporarily in lasted relation to the last. It is desirable that the different fastenings be inserted substantially simultaneously while the upper is held in lasted position and that the tacks, which serve as the additional holding means, be inserted close to the staples to insure against any yielding of the rib of the insole because of an excessive pull on the rib transmitted by the staples. Accordingly, the different slides for the staple forming and inserting mechanism and the tack driving mechanism are movable in intersecting direc tions to position the nozzles for directing the fastenings in closely adjacent relation and, in order that the nozzles may be carried simultaneously toward the work prior to the driving of the fastenings there is provided in the illustrated construction, means for imparting to one of the slides its movement toward the work in response to movement of another slide toward the work. Preferably, andas shown, the means for operating the drivers to effect simultaneous insertion of the fastenings is operative independently of the movements of the slides and after the slides have completed their movements toward the work.

In order to determine with accuracy the location of the tacks with respect to the rib of the insole one of the slides is provided also with a nose portion having a guideway formed therein for the tacks extending in the direction of tack insertion, said nose portion having a work engaging face formed and arranged to bend the upper and the rib over the insole inwardly at an angle'to the plane of the insole at the point of tack insertion to facilitate the insertion of the 9 tacks close to the base of the rib. Conveniently also this nose portion is provided with a deflecting surface for engaging the tacks during the tack driving operations to deflect them in curved paths inwardly away from the edge of the last bottom 0 Fig. 2 is a view partly in front elevation and partly in section of one of the lasting units of the machine shown in Fig. 1;

Fig. 3 is a view in side elevation of the lasting unit shown in Fig. 2 with a cover plate removed to show more clearly the fastening inserting mechanism of the present invention;

Fig. 4 isa View in side elevation of a portion of the fastening inserting mechanism shown in Fig. 3, the parts being shown in the positions which they occupy when the machine is at rest;

Fig. 5 is a view similar to Fig. 4 but illustrating the positions of the parts at the end of the fastening inserting operation;

Figs. 6, 7 and 8 are detailed views of a portion of the staple forming and inserting mechanism;

Figs. 9 and 10 are detailed views of the tackdriving mechanism; and,

Fig. 11 is a cross-sectional view through the forepart of a shoe in the process of being lasted by the machine shown in Fig. 1 and showing the relation of the lasting units to the shoe parts.

The invention illustrated herein is embodied in a machine of the type disclosed in my copending application Serial No. 601,982 referred to above. This machine is provided with a pair of lasting units for working an upper over a last at opposite sides of a shoe simultaneously, and with means for causing relative movement of the lasting devices and the shoe to transfer the point of operation along the shoe from the heel breast line forwardly to the tip line. The shoe is supported for the operation of the lasting units by a jack which is connected by a universal joint to a jack support mounted for movement in a direction substantially perpendicular to the bottom of the shoe and supported by a carrier mounted for movement in a direction extending I longitudinally of the shoe to present different portions of the shoe upper successively to the lasting units. The machine is provided with. a base carrying a head 52 which supports at the front of the machine a pair of lasting units 54, 56, each provided with means for working a shoe upper in lasted relation to a last and insole comprising a pair of upper tensioning grippers arranged to grip the opposite marginal portions of the upper and'to pull the upper heightwise of the last and wipers arranged to wipe the margin of the tensioned upper simultaneously at opposite sides of the shoe inwardly over the bottom of the shoe and with staple forming and inserting mechanism and tack driving mechanism arranged to insert staples and tacks substantially simultaneously throughthe opposite marginal portions of the tensioned shoe upper into the insole and the last to secure the upper permanently in lasted relation to the insole and temporarily in lasted relation to the last. The upper tensioning and fastening inserting units 54, 56, are carried by two supports and are provided with presser feet '58, 60, arranged to bear against the inner surface interconnected the pr-esser feet serve also to de-' termine the lateral position of the shoe in the machine. The supports are also mounted so that they can be rotated about axes extending approximately at right angles to the surface of the insole of the shoe operated upon and automatic mechanism is provided operating in time relation to the longitudinal movements of the shoe for rotating the supports to maintain the shoe upper engaging surfaces of the grippers substantially parallel to the portion of the shoe upper to be gripped and to cause the overlasting and securing means to operate in paths substantially normal to the rib of the insole thus compensating for the edge curvatures of the shoe sole.

The presser feet and the supports upon which they are mounted are fixed against vertical movement and in order to maintain the presser feet in contact with the surface of the shoe sole at opposite sides of the shoe throughout the lasting and fastening inserting operation means is provided operating in time relation to the travel of the shoe to impart tipping movements to the jack transversely of the direction of feed to maintain the .sides of the shoe in proper position to be acted upon by the upper tensioning and fastening inserting units 54, 56. The jack 61 is yieldingly urged upwardly to hold a shoe 62 mounted on a last 64, Fig. 1, carried by the jack in its uppermost position with its inner sole 66 pressed against the presser feet or anvils 53, carried by the upper tensioning and fastening inserting units, and means is provided for locking the jack support against downward movement during each operation of the upper tensioning and fastening inserting units. In describing the present invention it is unnecessary to set forth in detail the construction and mode of operation of the parts referred to above and for a full description of such parts, reference may be had to my copending application Serial No. 601,082 hereinbefore mentioned.

The illustrated staple forming and inserting mechanism and the tack driving mechanism of each lasting unit is supported by a pair of parallel plates 68, '70, secured to a support 72 having a cylindrical portion '74 positioned in a sleeve 76 of a bearing block '78 supported for forwardly and rearwardly swinging movement by a pair of

trunnions

80, 82 carried by the head of the machine. Below the cylindrical portion '74 the support 72 is provided with a flange 84 and clamped to the upper end of the cylindrical portion is a collar 86. The flange 84 and collar 86 serve to prevent vertical movement of the support 72 but permit the support torotate about the approximately vertical axis of the cylindrical portion 74.

In order that the units 54, 56 will have equal but opposite movements as they are swung toward and from each other each bearing block 78 has pivotally connected to it a link 88 (Fig. 1). The links 88 are of equallengths and are pivotally connected to the blocks 78 for swinging movements about axes which are parallel to the axes of the

trunnions

80, 82. The opposite ends of the links 88 are connected to the opposite ends of a lever 90 pivotally connected to the head 52 of the machine for swinging movement about a horizontal axis extending transversely of the head 52 intermediate between the trunnions 8'0, 32 of the bearing blocks 78.

Housed within each of the cylindrical portions '74 is a pair of slide members or

cross-heads

92, 94, Figs. 2 and 3, each having a semi-cylindrical outline. The

slide members

92, 94 are moved lengthwise of the cylindrical portions 7% in the same manner as in the machine of my copending application referred to above and are effective to operate the staple forming and inserting mechanism, the tack driving mechanism and upper gripping pincers 96 respectively regardless of and without interference by swinging movement of the upper tensioning and fastening inserting units 54, 56 about their

trunnions

80, 82, or turning movement of the supports 72 about the axis of their cylindrical portions '74. To permit this turning movement each of the

slide members

92, 94 is provided with a groove 98 parallel to the circumference of the slide memher and receiving a block 100 having a cylindrical outer surface so as to permit rotation of the

slides

92, 94 about their axis while the blocks 100 remain stationary. The blocks 100 are connected by

links

102, 104, Fig. 2, to the means for operating the staple forming and inserting mechanism, the tack driving mechanism and the upper gripping pincers 96, respectively. The slide 92 is connected to the staple forming and inserting mechanism and the tack driving mechanism by a link 106 and the slide 94 is connected to the gripping pincers 96 by a link 108.

The staple forming and inserting means of each unit 54, 56 is illustrated particularly in Figs. 3, 4, and 5. The side plates 68, '70 of each unit 54, 56 are provided with forwardly and downwardly inclined guideways for movable slides or carriers 110 having mounted thereon the upper wiping means, the staple driving mechanism, and a portion of the staple forming mechanism. Pivoted at 112 to the side plates 68, '70 beneath the carrier 110 is a lever 114 having an upwardly projecting portion 116 shaped and arranged to serve as an inside former for the staples. Each carrier or slide 110 is formed of two principal parts, an upper portion 118 and a cover plate 120, the lower portion 122 of the forward end of which serves as a wiper to wipe the shoe upper 62 over the feather and into engagement with the rib of the insole 66. The upper portion 118 of the carrier 110 is shown in detail in Figs. 6, 7 and 8 and comprises a pair of

parallel bars

124, 126 carrying at their forward ends a staple guiding nozzle or throat member 128 and between which are mounted for reciprocating movement an outside former slide 130. a driver slide 132. and an operating slide 134. The driver slide 132 and the operating slide 134 have formed upon their opposite side portions tongues which extend into lengthwise grooves formed in the parallel bars 124. 126. The operating slide 134 is provided with a rack 136 the teeth of which mesh with the teeth of a gear segment 138 formed upon the downwardlwextendin arm 140 of a bellcrank lever 142 fulcrumed at 144 to the side plates 68, '70. The lever 142 is provided with a laterally-extending arm 146 to the outer end of which is pivotally connected the'lower end of the link 106. The driver slide 132 is provided with trunnions, one of which is shown at 148 (Figs. 4 and 5), to which are pivotally connected a pair of links 150, the opposite ends of which are pivotally connected to the downwardly-extending arm 152 of a driver lever 154 fulcrumed at 156 to the side plates 68, T70 and having an upwardly-extending arm carrying a latch 158 arranged to engage a latch 160 carried by a lever 162 fulcrumed at 164 to the

side plates

68, 70 to hold the driver lever 154 in its rearmost position (Fig. 4) A driver 166 T-shaped in cross section is clamped at 168 (Fig. 4) to the driver slide 132 and passes through similarly shaped driver passages formed in the outside former slide 130 and the nozzle or throat memher 128.

The two wires 170 from which the staples are formed are fed to the units 54, 56 by mechanism of the type disclosed in Letters Patent of the United States No. 1,854,204 granted April 19, 1932 upon an application of mine, through tubes 172 each having an adjustable end portion 174 threaded into the slide plate 68 (see particularly Fig. 2). Cooperating with the inside former 116 is an outside former comprising a pair of thin forwardly-extending plates 176, 1'78 which are spaced apart and which extend when the outside former slide 130 is in its rearmost position into the nozzle 128 to form with the inside former 116 a Wire pasage 180 (Fig. 6) in alignment with the outlet end 182 of the adjustable end portion 174 of the tubes 172 at the time the wire is fed. The

plates

176, 178 are carried by the slide 130 and as the slide 130 is moved forward the wire is first severed by the plate 1'76 one edge of which acts as a cutter and cooperates with the outlet end 182 of the adjustable end portion 174 to cut the wire before the forming of the staple begins. The feeding of the wires takes place soon after the parts have been returned to their rearmost positions (Figs. 4 and 6). The cover plate 122 is provided with a slot 184 to permit entrance of the inside former 116 into the driver passage formed in the outside former slide 130. The lever 114 is provided with a cam surface 186 which, when the parts are in their rearmost positions, lies in the path of movement of a cam surface 188 formed upen the wiper cover and with a lug 190 at its rearmost end the upper surface 192 of which normally bears against a finished surface 194 formed upon the wiper cover 120. The lug 190 is provided with a lower inclined surface 196 which lies in the path of movement of a cam surface 198 formed upon the cover plate 120. Thus as the carrier 110 is moved toward and fromthe work, the lever 114 is swung positively first in a 5 counter-clockwise direction as viewed in Figs 4 and 5 to move the inside former 116 out of the driver passage formed in the outside former slide after a staple has been formed and then in a clockwise direction to move the inside former 116 120 into the driver passage of the slide 130 during the return movement of the carrier 110 and before the wire is fed into the wire passage 180.

It will be understood that the slide 134 is operated in timed relation to the gripper mecha- 5 nism to move the outside former slide 130 forwardly relatively to the carrier 110 to cause the plates 1'76, 178 to form a staple around the inside former 116 from a piece of wire presented V thereto and then to impart forward and down- 130 ward movement to the carrier 110 to cause the wiper 122 to wipe the tensioned upper 62 inwardly over the feather and into engagement with the rib of the insole 66 before a staple is inserted into the work and to return these devices to their rearmost positions after the driving of the staple.

As illustrated, the operating slide 134 is provided at its forward end with a downwardly projecting portion 200 which extends between a pair of spaced upstanding lugs or

projections

202, 204 formed on the outside former slide 180 and with a lug 208 depending from the median portion of the slide 134 and extending between the outside former slide 130 and the driver slide 132.

, Referring more particularly .to Figs. 3 and 4 which illustrate the various parts of the staple forming and inserting mechanism ina position of rest, it will be seen that each driver l'ever154 is provided with a pair of adjustable blocks 210 mounted at opposite sides of the lever upon a rod 212 which extends through anarcuate slot 214 formed in the lever 154 concentric with the pivot 152. The rods 212 are heldin adjusted position by nuts 216 threaded upon the opposite end portions of the rods and arranged to clamp the blocks 210 and the rods 212 in any position relatively to the levers 154 to which they may be adjusted. Each driver lever 154 is urged in a clockwise direction, Fig. 3, by a pair of coiled driving springs 218 mounted upon the hub portions of a pair of levers 220 pivoted at 156 to the side plates 68, '70 and having downwardly-extending arms 222 connected to the

parallel bars

124, 126 of the carrier 110 by ball-and-socket connections. To limit the driving movements of the levers 154 under the influence of the springs 218 there are provided laterally-projecting stops or lugs 224 formed on the levers 220 and arranged to engage fiber disks 226 carried by the adjustable blocks 210. The levers 154 are provided with laterally-extending ears 228 carrying adjusting screws 230 the ends of which bear againstthe upper surfaces of the adjusting blocks 210. The blocks 210 may be adjusted relatively to the lever 154 to determine the position of the staple drivers 166 at the end of their driving strokes relatively to the nozzles 128 by movement of the screws 236. This adjustment is preferably made when the parts are in the positions shown in Fig. 5 and since the extent of driving movement imparted to the lever 154 by the spring 218 is limited by the stop 224, the position of which is controlled by the position of the carrier 116 at the end of its downward movement, it will be readily seen that the ad- 'usted positions of the drivers 166 will remain fixed relatively to the nozzles 128 regardless of the thickness of the work or such small variations as there may be in the extent of the movement of the carrier 110.

The presser feet 58, are arranged to yield. during the inward movement of the carriers 110 to clamp the stock, to compensate for varying thicknesses of work and, accordingly, are pivoted at 232 between the side plates 68, '70 and urged in a counterclockwise direction as viewed in Figs. 3, 4 and 5 by spring pressed plungers 234 bearing against the upper ends of a pair of upwardlyextending arms 236 with which each

presser foot

58, 60 is provided. The

presser feet

58, 60 are provided with stops 238 arranged to engage surfaces 240 formed on the side plates 68, '70 to limit counterclockwise movement of the presser feet under the influence of the spring pressed plungers 234. In order that the legs of the staples will be guided properly relatively to clinching cavities 242 formed in a substantially vertical surface with which each

presser foot

58, 60 is provided, each nozzle or throat member 128 is provided with a guide member 244 urged in a counterclockwise direction as viewed in Figs. 3, 4 and 5 by a spring pressed plunger 246 and having a downwardly projecting portion 248 corresponding in width to the distance between the legs of the staple. The portion 248 of the guide member 244 lies in the driver passage of the throat member and after guiding the legs of the staple is lifted by engagement of the driver 166 therewith.

Rearward movement of the slides 134 is effective also to return the driver slides 132 to-their rearmost positions, the depending lugs 208 of the slides 134 engaging the slides 132 and the stops 224 on the levers220 engaging the adjustable blocks 210 carried by the driver lever 154 so that as the levers 142 are swung in a counterclockwise 132 and the levers 154 are moved into latching positions, the latch carrying lever 162 being operated at this time by means hereinafter described to'hold the lever 154 in its rearmost position against the action of the spring 218.

By reference to Figs. 6, '7, and 8 it will be seen that the wiper covers 120 are provided with nose portions 250 arranged to bend the upper and the rib of the insole inwardly toward the body portion of the insole rearwardly of the

presser feet

58, 60. The, nose portions 250 are also provided with guideways or grooves 252 through which the tacks are driven, the tacking mechanism being definitely located with respect to the wipers as will be hereinafter explained, to drive the tacks at these points. The portions 250 are provided with deflecting surfaces 254 arranged to engage the tacks before they enter the work and to bend successive portions of them, as they are driven, in directions transversely of the rib of the insole inwardly toward the body portion of the last. It will be observed by reference to Fig. 11 that the tacks are thus driven close to the base of the rib of the insole and serve to relieve the rib of the tension of the upper and to hold the overwiped margin of the upper fiat upon the feather of the insole. It will also be evident that the staples are driven in the same direction as the overlaying movement of the wipers 122 and that they are thus inclined inwardly toward the base of the rib of the insole, the legs of the staples being clenched close to the base of the rib on the inner side thereof and the cross-bars of the staples being located on the outer side of the rib beneath the path of the inseam trimming knife and above the path of the welt attaching needle.

As shown in Fig. 6 the wire 170 from which the staples are formed is fed into the wire passage 180 between the inside former 116 and the outside formers 1'76, 1'78 when the parts are in their rearmost positions. Upon forward movement of the slides 130 the members 1'76 sever the fed-in portions of wire and at the same time the outside formers 1'76, 1'78 engage the wire and press it against the face of the inside formers 116. By continued movement the outside formers form a substantially U-shaped staple as clearly shown in Fig. 8. During the formation of the staples the carriers 110 are held against movement by friction devices 256, Figs. 6 and '7, comprising flat springs 258 mounted on the side plates '70 and having their free ends bearing against brass plugs 260 extending'through apertures formed in the side plates '70 and bearing against the bars 126 of the wiper casings 110. The friction devices 256 perform a like function to restrain the carriers 110 from moving with the slides 130 at the start of the return movement of the operating slides 134, the slides 134 moving the slides 130 rearwardly relatively to the carriers 110 until the slides 130 engage pins 261 carried by the parallel bars 126 of the carriers 110 after which during continued movement of the slides 134 rearwardly the slides 130 move the carriers 110 away from the work. At the end of the forward movement of the slides 130 relatively to the carriers 116 the staples are fully formed. At this time also the projections 202 formed on the slides 130 engage the rear faces 262 of the nozzles 128 and the outside former members 1'76, 1'78 are in engagement with the surfaces 264, 266 formed on the staple guiding nozzles 128 thus forming continuous driver passages for the staples, Fig. 8. It will be understood that the driver passages in the slides 130 are in alignment with the driver passages in the nozzles 128 from which thestaples are driven into the work. By continued movement the slides 130 move the carriers toward the work. As the carriers 110 are moved toward the work the cam surfaces 188 engage the surfaces 186 formed on the levers 114 to swing the levers 114 ina counterclockwise direction as viewed in Figs. 3, 4 and 5 thereby moving the inside formers 116 out ofthe driver passages in the outside former slides 130 and leaving complete staples in the driver passages ready to be inserted into the work.-

The tack driving mechanism of each unit 54, 56, is illustrated. particularly in- Figs. 9 and 10 and comprises a driver bar slide 268 mounted for vertical sliding movement in a groove or way formed in the side plate 70. The slide 268 is bored longitudinally for the greater portion of its length for the reception of a cylindrical driver bar 270. At its lower end the slide 268 is provided with a reduced bore 272 into which extends a tack driver 274. The cylindrical driver bar 270 surrounds the upper end of the driver 274 and is provided with a transverse slot to receive a block 276 the lower surface of which bears against the head of the driver 274 and the upper surface of which is concaved to fit the rounded end portion of a link 2'78 pivoted at its lower end to the driver bar 270 and at its upper end to the forward end of a lever 280 pivotally mounted upon a rod 282 supported by a pair of ears 284 extending up wardly from the side plate 68. At its lower portion the driver bar slide 268 is provided with a downwardly and inwardly inclined tack passage 286 converging toward and entering the bore 272 and into which tacks are delivered in successive charges through flexible tubes 288 from a distributor indicated generally by the reference numeral 290, Fig. 1, and mounted upon the head 52 of the machine. The distributor 290 may be of any suitable type such, for example, as that shown in United States Letters Patent No. 1,722,287, granted July 30, 1929, upon an application filed in the names of George Goddu and Fred L. Mac- Kenzie. The distributor 290, Fig. 1, comprises a tack pot 292 rotatably mounted upon a bracket 294 carried by the head 52 of the machine. The tack pot 292 is continuously driven by a belt 236 running from a pulley member 298 driven by suitable gearing from the head shaft of the machine. The distributor is provided with a raceway unit 300 from which tacks are separated and delivered into the tack tubes 288 which lead to the tack passages 286 formed in the tack carrying and driver bar slides 268. To retain the tacks to receive the action of the drivers 274 each driver bar slide 268 is provided at its delivery end below the junction of the passage 286 with the bore 2'72 with a nozzle 302 formed in halves divided vertically. The halves of the nozzle 302 are pivoted at 304 to the slide 268 and are held yieldingly together to form a contracted passage for the tacks, axially aligned with the bore 2'72, by a coiled spring 386 the arms of which bear against the outer surfaces of the halves of the nozzle.

In order to inspect the passage 286 and the lower end of the bore 272 the passage 286 is formed as a groove the open side of which is closed by a removable hookshaped gate or clean-out piece 308, Figs. 9 and 10. The gate 308 is provided with a hook-shaped lower portion having a slot 310 formed therein and an upwardly ex- -tending portion having a slot 312 formed in its upper end. The slot 310 is adapted to. engage a pin 314 carried by the slide 268 and extending transversely of the passage 286 and about which the gate 308 may be swung into position to close the passage 286 and the lower end of the bore 272.. The gate 308- is held in closed position by a bail 316 pivoted at 318 to the slide 268 and arranged to engage the slot 312 formed in the upper end of the gate 308. The slide 268 is provided with an arcuate surface 320 eccentric with respect to the pin 314 and arranged to engage a correspondingly shaped surface 322 formed upon the lower edge face of the gate 308 to limit swinging movement of the gate to close the passage 286. From the construction described it will be readily seen that the gate 308 may be removed by simply lifting the bail 316 swinging the gate 308 outwardly and removing it from the pin 314 to ascertain whether tacks are flowing properly to the nozzle 302.

The lever 280 is operated to impart tack driv-. ing movement to the driver 2'74 by a torsion spring 324 coiled about the hub of the lever 280v and having one end bearing against a pin 326 carried by the side plate 68 andthe other end bearing against a laterally-extending arm 328 projecting from the median portion of the lever 280, Figs. 9, 10. Clockwise movement of the le.- ver 280, as viewed in Figs. 9and 10, is limited by a stop 330 carried by the side plate '70 and engaging a lateral projection 332 formed on the lever 280. The lever 280 is held in its uppermost position against the action of the spring 324 by a latch 334 formed upon the lever 162 which engages a latch 336 formed upon the arm 328 of. 110 the lever 280, Figs. 4 and 5. The lever 2 80.is unlatched to permit the driving of a tack substantially simultaneously with the release of the. lever 154 by mechanism hereinafter described and is returned to'its uppermost position substantially simultaneously with the return of the lever 154. As shown, the lever 142 is provided with a laterally-extending arm 338 to which is pivotallyconnected a rod 340 having a ball-shaped'median portion 342 and a reduced end portion 344 extending through an aperture formed in the arm 328 of the lever 280.' Asthe lever 142 is swung. in a counterclockwise direction, Figs. 4 and 5, the ball-shapedmedian'portion 342 of the rod 340. engages a spherical seat 346 formed upon the arm 328 of the lever 280 and as the lever142 continuesits counterclockwise moveinent the lever 280 is returned to its starting position after a tack, has been driven into the work.

In order to facilitate presentation of the shoe upper to the grippers 96 the slides 268 are maintained in an out of the way position during the feeding movement of the work and are moved. downwardly in response to inward movement of the carriers 110 into proper relation to the grooves 252 in the wiper covers 120 so that the tacks will be driven in the proper locations at the end of; the overwiping operation. As shown in Figs. 4, 5 and. 10 the carrier 110 carries a pin 348 ex-: tending through a slot 350 formed in the side plate 70 and into a slot 352 formed in the rearwardly-extending arm of a lever354 fulcrumed at 356 to the side plate 70 and provided with 'a forwardly-extending arm the front end of which is forked to engage a pin 358 carried by the slide 268. It will be evident that rearward movement of the carrier 110 and pin 348 will swing the lever 354 about its fulcrum to elevate the slide 268 and that as the carrier 110 moves toward the work the slide 268 wil be moved downwardly into 150 LOO ' latch carrying lever downwardly to and through tubes 368 to feed rolls 370, 372 (Fig. 2), a pair of which are carried by each of the upper-tensioning and fastening-inserting units 54, 56. From the

feed roll

370, 372 each wire passes through the corresponding tube 172 to its outlet 182 as already described. The means for operating the two pairs of feed rolls 370, 372 of the staple forming and inserting units 54, 56 need not be described herein in detail, since it is substantially the same as similar means fully shown and described in Letters Patent of the United States No. 1,854,204 hereinbefore mentioned. As more fully disclosed in said prior Letters Patent the feed rolls 370, 372, are rotated by a pawl and ratchet arrangement 374 (Fig. 1) clamped to the outer end of a shaft 376 (Figs. 1 and 2) geared to a rod 378 connected to a cam 380 mounted at the right-hand side of the head 52 instead of at the left-hand side as in the machine of the prior Letters Patent hereinbefore mentioned. Rotation of the cam 380 is effective to reciprocate the rod 378 and thus to drive the feed rolls 370, 372, through the pawl and ratchet 374 in a step-by-step manner to feed appropriate lengths of wire to the units 54, 56.

For operating the

latches

160, 334 to release the

levers

154, 280 for the staple-inserting and tackdriving operations each unit 54, 56 is provided with a lever 382 fulcrumed at 384 to the side plates 68 and having a forwardly-extending arm .386 provided with a gear segment 388 the teeth of which mesh with teeth formed upon the rod 378 (Fig. 3). extending arm to which is pivotally connected a link 390 the upper end of which is pivotally connected to the laterally-extending arm 392 of the V 162. The configuration of the earn 380 is such that after the parts have been returned to their rearmost positions (Figs. 3 and 4), the rod 378 is moved downwardly to rotate the

feed wheels

370, 372, tofeedpredeterminedlengths of wire to the units 54, 56. Downward movement of the rod 378 causes the lever 382 to swing in a counterclockwise direction as viewed in Fig. 3 and through link 390 to cause clockwise movement to be imparted to the latch carrying lever 162 to swing the

latches

160, 334 inwardly into engagement with the

latches

158, 336 carried by the

levers

154, 280, respectively. Release of the

levers

154, 280, for the staple-inserting and tackdriving operations is effected substantially simul- 't'aneously in response to a counterclockwise movement imparted to the latch carrying lever 162 by upward movement of the rod 378. Upward movement of the rod 378 does not take place,

ihowever, until after the carrier 110 has been moved toward the work to cause the wiper 120 to wipe the tensioned upper 62 over the feather and into engagement with the rib of the insole 66.

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, a plurality of members for guiding fastenings into a work piece, a plurality of slides movable in different directions for moving said members toward the work piece, means for mov- The lever 382 has a rearwardlyslides its movement toward the work in response to movement of the first slide.

3. A fastening inserting machine having, in combination, a pair of fastening guiding nozzles, a pair of slides for moving said nozzles toward a work piece, said slides being movable in intersecting positions, means for moving one of the slides toward the Work, and connections between the slides comprising ,a lever arranged to be swung about its pivot in a direction to move the second slide toward the work in response to movement of the first slide.

4. A fastening inserting machine having, in combination, work positioning means, a staple nozzle, a slide for moving said nozzle toward and from the work, a tack nozzle, a second slide for moving said tack nozzle toward and from the work, and connections between the slides constructed and arranged to cause said second slide to move toward and from the work in response to movement of the first slide.

5. A fastening inserting machine having, in combination, a pair of slides, a pair of fastening guiding nozzles carried thereby, a lever for moving one of said slides toward and from a work piece, and a second lever for moving the second slide toward and from the work in response to movement of the first slide.

6. A fastening inserting machine having a pair of fastening guiding nozzles, a pair of slides for moving the nozzles toward a work piece, a friction device for holding one of said slides against movement, and a positive connection between the slides constructed and arranged to impart movement to one of the slides in response to movement imparted to the other slide.

7. A fastening inserting machine having, in combination, a plurality of nozzles for guiding fastenings into a work piece, a plurality of slides for moving the nozzles toward a work piece, means for moving one of said slides toward the work in response to movement of another slide, a plurality of drivers for the fastenings, and means for operating the drivers to effect simultaneous insertion of the fastenings.

8. A fastening inserting machine having, in combination, a staple nozzle, a tack nozzle, a pair of slides for moving said nozzles toward a work piece, a pair of drivers movable relatively to said slides to insert staples and tacks into the work piece, and means for operating the drivers simultaneously.

9. A fastening inserting machine having, in combination, a plurality of nozzles for guiding fastenings into a work piece, a plurality of slides for the nozzles, means for moving the slides toward a work piece, a plurality of spring operated drivers for the fastenings, and a single means for tripping the drivers to render them operative to insert the fastenings.

10. A fastening inserting machine having, in combination, a pair of fastening. guiding nozzles, a pair of slides for moving the nozzles toward a work piece, one of said slides being movable toward the work in response to movement of the other slide, a pair of spring operated drivers movable relatively to the nozzles to insert fastenings into the work, and means for releasing the drivers to effect simultaneous insertion of the fastenings.

11. A fastening inserting machine having, in combination, a pair of fastening guiding nozzles, a pair of slides for moving said nozzles toward and from the work, a pair of drivers for the fastening's, a pair of spring operated levers for imparting operative movement to the drivers, and a single means for releasing said levers to effect simultaneous insertion of the fastenings.

12. A fastening inserting machine having, in combination, a pair of fastening guiding nozzles, a pair of slides for the nozzles, means for moving the slides toward a work piece, a pair of drivers for the fastenings, a pair of spring operated levers connected to the drivers, latches for holding the levers against movement, and means for operating the latches to release the levers to impart operative movement to the drivers simultaneously.

13. A fastening inserting machine having,'in combination, a pair of interconnected slides movable in unison toward and from a work piece, a pair of fastening guiding nozzles carried by said slides, one of said nozzles having a staple guideway formed therein, means for feeding a formed fastening to one of said nozzles, staple forming means arranged to form a staple from a piece of wire and to position said staple in line with the staple guideway in the other nozzle comprising an inside former and an outside former movable relatively to said inside former to form a staple and then to move said slides toward and from the work, a pair of spring operated drivers for the fastenings, and means for releasing the drivers to insert the fastenings after the slides have completed their movements toward the work.

14. A fastening inserting machine having, in combination, an abutment for engaging the work, a guide for fastenings movable toward the work, a driver movable through said guide for inserting fastenings into the work, a spring operated lever for operating the driver, an adjustable member 'carried by said lever and arranged to engage a fixed stop to limit movement of the driver toward 'the work, and means for releasing the lever independently of the movement of the guide.

15. A fastening inserting machine having, in combination,an abutment for engaging the work, a guide for fastenings movable toward the work, a driver movable through said guide for inserting fastenings into the work, a lever connected to the guide and provided with a stop, a spring operated lever for imparting operative movement to the driver, and an adjustable stop carried by said spring operated lever and arranged to engage the stop carried by the first-named lever to limit movement of the driver toward the work.

16. A fastening inserting machine having, in combination, work engaging means, fastening guiding means movable toward the work, a lever connected to said guiding means and provided with a stop, a driver, a spring operated lever for imparting operative movement to the driver, and a member carried by said lever and arranged to engage the stop carried by said first-named lever to limit movement of the driver toward the work, said member being adjustable to vary the inserting position of the driver.

17. A fastening inserting machine having, in combination, work positioning means, a staple guiding nozzle, a carrier for moving said nozzle toward the work, a slide movable relatively to said carrier and provided with a driver, a spring operated lever connected to said slide for imparting operative movement to the driver, a second lever connected to the carrier and arranged to engage the first-named lever to limit movement of the driver toward the work, and means for releasing the first-named lever independently of the movement of the carrier.

18. A fastening inserting machine having, in combination, work positioning means, a nozzle for guiding fastenings into the work, a carrier for moving said nozzle toward the work, a lever movable with said carrier, a slide movable relatively to said carrier and provided with a driver, a spring operated lever for imparting operative movement to the driver, and a pair of stops carried by said levers for limiting movement of the driver toward the work, one of said stops being adjustable to vary the driving position of the driver relatively to the nozzle.

19. A fastening inserting machine having, in combination, an abutment for engaging the work, a guide for fastenings, a carrier for said guide movable toward and from the work, a lever, a driver carried thereby, a spring for operating the lever, a second lever connected to the carrier and arranged to engage said first lever to limit movement of the driver toward the work, a latch for holding said first lever against movement when the carrier moves toward the work, and camcontrolled means for operating the latch to release said first lever after the carrier has completed its movement toward the work.

20. A fastening inserting machine having, in combination, an abutment for engaging the work, a guide for fastenings movable toward the work, a driver movable through said guide for inserting fastenings into the work, a spring operated lever for operating the driver,.means carried by. the lever for adjusting the position of the driver relatively to the guide, a second lever for holding the first-named lever against movement when the guide moves toward the work, and means for operating the second lever to release the first lever after the guide has completed its movement toward the work.

21. A fastening inserting machine having, in. combination, a carrier movable toward and from the work and having a staple guiding nozzle, staple forming means comprising an inside former and an outside former movable relatively to said inside former to form a staple from a piece of wire presented thereto and movable thereafter to move said carrier toward the work into a position for guiding a staple into the work and then to move said carrier away from the work after the insertion of a staple, and means operative in response to the movement of the carrier toward and from the work for moving said inside former out of and into operative relation to said. outside former.

22. A fastening inserting machine having, in combination, a movable slide having a staple guiding nozzle, staple forming means comprising a lever, an inside former carried by said lever, an outside former movable relatively to said inside former to form a staple from a piece of wire presented thereto and movable thereafter to move said slide toward and from the work, and means carried by the slide for rocking said lever about its fulcrum to move said inside former out of and into operative relation to said outside former during movement of the slide toward and from the work.

23. A fastening inserting machine having, in

combination, a movable carrier having a staple guiding nozzle, a. slide mounted for movement in said carrier, an outside former carried by said slide, a lever, an inside former carried by said lever, a second slide for moving said first-named slide relatively to said carrier to cause said outside former to form a staple about said inside former and then to move said carrier toward and from the work, and means operative in response to the movement of the carrier for rocking said lever about its fulcrum to move said inside former out of and into operative relation to said outside former.

24. A fastening inserting machine having, in combination, a movable carrier having a staple guiding nozzle, a slide mounted for movement in said carrier, an outside former carried by said lever, a second slide, means for operating said second slide to impart operative movement to said first-named slide to cause the outside former to move relatively to the carrier to form a staple about the inside former after which during continued movement of the second slide the first slide moves the carrier toward and from the work, said carrier having a pair of cam surfaces formed thereon arranged to cooperate with a pair of cam surfaces formed on said inside former lever whereby during movement of the carrier toward and from the work the inside former lever is rocked about its fulcrum to move the inside former positively out of and into operative relation to said outside former.

25. A fastening inserting machine having, in combination, a slide movable toward and from the work, a staple guiding nozzle carried by said slide and having a staple guideway formed therein, staple forming means comprising an inside former and an outside former movable relatively to said inside former to form a staple and then to move said slide toward the work, wire feeding means, a staple inserting driver, a spring operated lever for imparting operative movement to said driver, a latch for holding said lever against movement, and means connected to said wire feeding means for operating said latch to release said lever after the slide has completed its movement toward the work.

26. A fastening inserting machine having, in combination, a slide movable toward and from the work, a staple guiding nozzle carried by said slide and having a staple guideway formed therein, staple forming means comprising an inside former and an outside former movable relatively to said inside former to form a staple and then to move said slide toward the work, wire feeding means, a spring operated driver for driving staples through said guideway into the work, and means connected to said wire feeding means for tripping said driver to drive a staple after the nozzle has been moved into engagement with the work.

27, A fastening inserting machine having, in combination, a pair of slides movable toward and from a work piece, a pair of nozzles carried by said slides for directing fastenings into the Work-piece, a pair of drivers movable through said nozzles for driving the fastenings, and means carried by one of the slides for engaging the fastenings driven through the nozzle of the other slide and for bending successive portions of them to cause said fastenings to enter the work in curved paths.

28. A fastening inserting machine having, in combination, a pair of slides movable toward a work piece, a staple guiding nozzle carried by one of said slides, a tack guiding nozzle carried by said other slide, a pair of drivers movable relatively to said slides for driving the staples and tacks, and a deflector carried by one of the slides for engaging the tacks before they enter the work and for bending them progressively in the driving operation to anchor them in the work.

29. A fastening inserting machine having, in combination, a driver, a slide having a way formed therein for said driver and a passage having an open side for delivering fastenings to said way beneath said driver, a nozzle arranged to hold the fastenings for the operation of the driver, and a gate pivotally connected to said slide and arranged to close said passage, the construction being such that upon removal of the gate the passage and the way are open for inspection and removal of fastenings.

30. A fastening inserting machine having, in combination, a driver bar, a driver carried thereby, a slide movable toward and from the work, said slide having a driver passage formed therein and a passage for delivering fastenings into said driver passage below the driver having an open side, a gate pivotally connected to said slide for closing said delivery passage, and a pivoted bail for holding the gate in closed position.

31. A fastening inserting machine having, in combination, .a driver bar having a driver, a fastening guiding nozzle, a slide for moving said nozzle toward and from the work and having a driver passage formed therein and a tack passage terminating in said driver passage between the driver and the nozzle, said tack passage having an open side, a pivoted gate for closing said tack passage, a stop carried by the slide for limiting movement of the gate to close the passage, and a bail for holding the gate in closed position.

ROBERT H. LAWSON.