US1664657A - Apparatus for use in making shoes - Google Patents

Description

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April 3,, W28,

F. E. @EEWTRANQ APPARATUS FOR USE IN MAKING sHoEs Filed May 18, 1.922 Shaecs8heet 1 .&, m

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Patented Apr. 3, 1928.

UNITED STATES PATENT OFFICE.

FREDERIG E. BERTRAND, OF LYNN, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OF PA'IEBSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

APPARATUS FOR USE IN MAKING SHOES.

Application filed May 18, 1922, Serial No. 561,901, and in Great Britain May 25, 1821.

This invention relates to apparatus for use in attaching heels to shoes, and in analogous operations, and is in ation of my application Serial No. 402,281,

a tiled Aug. 9, 1920, which has matured into United States Letters Patent No. 1,502,014 dated July 24, 1924. Although not limited thereto the invention is herein illustrated as embodied in apparatus particularly designed for use in attaching wood heels to ladies shoes.

' It has been customary, heretofore, to apply an adhesive to the wood heel and the heel seat of the shoe and then to clamp the heel to theshoe by means of an iron C clamp which is left on the shoe for a sufficient period of time to allow the adhesive to set. For quantity production this necessitates a large number of bulky clamps and interposes a long interval before other operations can be performed on the shoe. According to a superior method described and claimed in United States application Serial No. 367,173, filed Mar. 19, 1920, on application of Maurice Bresnahan, which has matured into United States Letters Patent No. 1,615,258, dated January 25, 1927, the heel may be fastened temporarily to the shoe by a screw which passes through a last on which the shoe is supported and enters the heel. This screw takes the place of the' large clamps previously referred to andpermits other operations to be performed on the shoe while the adhesive sets. An object of the present invention is to provide improved apparatus which, without sacrifice of utility in other directions, is especially well adapted for use in carrying out the method described in the above-identified Letters Patent No. 1,615,258.

With this object in view the invention, in one aspect, comprises a novel formof clamp for holding a last and shoe and heel firmly in position, for example in performing the above art a oontinu-.

described operations, including a clamp'memtoward and from the last by rock arms connected thereto. Preferably shorter rock arms are connected to the links intermediate their ,ends, or some equivalent construction may be used in order to carry the clamp member over the end of the shoe out of the way when the clamp'is opened.

In order to provide for minor variations in the heights of lasts and heels, the above described clamp member may be arranged to be operated yieldingly by connecting it to a. manually controlled arm such as a treadle througha spring. The action of the spring may be kept substantially uniform when there is a considerable variation in the height of the last or heel, by providing an adjustment between the spring and the clampmember.

- Other features of my invention, including ad ustments of the various parts and different combinations and specific constructions, w ll be apparent from the following description of the embodiment of my invention shown in the accompanying drawings, in which:

Fig. 1 is a perspective, partly broken away, of the upper portion of the apparatus, showing a last, shoe and heel clamped therein;

Fig. 2 is a section through the lower part of the apparatus showin a side elevation of the last, shoe and heel c amping means;

Fig. 3 is a front elevation oorrespondin to Fig. 2 and showing the last, shoe and hee clamping means;

Fig. 4 is a section on the line 4-4 in Fig. 2 showing "the connection between the t-readle rod and clamp carryin links;

Fig. 5 is a side elevation 0 some of the operating parts showing the driving of a screw fastener, with the driving device shown partly in section;

Fig. 6 is a view showing the seating of the driving device on its support; and

Fig. 7 is a view, partly in section, of part of an improved last adapted for use in temporarily attaching heels as described.

According to the above-described novel method of temporarily attaching heels, especially wood Louis heels, to shoes, the shoes are lasted and bottomed on improved lasts, one of which is shown in Fig. 7 at4, A.

'" last of this type is formed as shown, with a thimble be e 5 usually perpendicular to the heel seat of the last, and with a second hole 6 passing entirely through the last in a direction parallel to the axis of a heel on a shoe on the last. The hole 6 registers witha hole 8 approximately at the center of a metal heel plate 7 used for clinching the lasting tacks and heel-seat nails. A tackhole 9 is also provided inthe heel plate for the reception of a tack temporarlly holding the sole. As will be explained, a suitable fastening (shown at 94 in Fig. 5) 1s. passed through holes 6 and 8 and through the shoe bottom into the heel, to clamp the last and the shoe and heel together, to permit the shoe to be finished while the heel-attaching adhesive is drying.

If desired, the last may be counterbored as shown at 11 in Fig. 7, to provide a surface at right angles to the axis of hole 6, against which surface the head portion of a fastener may seat firmly.

The heel is supported by engagement with a tread plate 14, pivotally mounted on a hollow supporting post 16 adjustably mounted in a table 10 to which it is secured by a set screw 18, and a member 20 shaped to correspond to the contour of its rear surface. The tread plate 14 and the member 20 may both be faced with leather, felt or other suitable padding, and the member 20 is arran ed for vertical adjustment to receive hee s of different shapes and heights, and is secured to the post 16 in adjusted position by means of a set screw 22. The toe portion of the shoe is supported by a plate 24 connected by links 26 to a post 28 which is adjustably held in the table 10 by means of a set screw 30. The bolts clamping the links 26 to the post 28 and the plate 24 are arranged to bind with sufficient tightness to prevent accidental displacement of the plate 24 while at the same time permitting its adjustment. The plate 24 is arranged with a recess in which is received a slide 32 which is clamped in adjusted position by means of set screw 34, and which carries a pin 36 engaging one side of the toe portion of a shoe to prevent the shoe from turning. In the illustrated machine, number 20, while adjustable as to height, has an invariable inclination. Accordingly the shoe is adjusted by tilting plates 14 and 24 to bring the back of the heel firmly against member 20.

A last, shoe and heel supported by engagement with (plates 24'and 14 and member 20 are clampe rigidly thereagainst, by a clam ing member 40 frictionally mounted, for sildmg adjustment laterally of the last and for automatic tilting to engage the last. firmly, on a rod 42 which is carried by a pair of sleeves 44. The sleeves 44 are car-' ried by links 46 on which the may be slidingly adjusted according to t e vertical height of the last and heel. These sleeves are clam ed in adjusted position by tightening suita le clamp screws 48.

Intermediate theirends the links 46 are' pivotally secured at 50 to a pair of arms 52 pivotally mounted on an ad ustable arm 1 54 slidinglyclamped inthe head of the post 28. At their lower ends links 46 are secured to arms 56 formed on a U-shaped member 58 (Fig. 4). The member 58 is formed with bearings for a spindle 60 secured in a projection 62 formed on the lower end of post 16. It will be observed that arms 56 are substantially longer than arms 52. By this arrangement, whenever clamp member 40 is moved upwardly, links 46 are pushed upward by arms 56, and are also rocked about the connections 50 with arms 52, to carry the clamp member 40 forwardly over the toe end of the shoe entirely outof the way of the operator. By a comparison of Figs. 2 and 3, it will be observed that arms 52 are bowed upwardly and away from links 46 to permit a greater forward motion of links 46 than would otherwise be possible without bringing the' links into engagement with these arms. The upward and forward, or idle, position of clamp member 40 is adjustably determined by a threaded stop 64 which engages an abutment 66 formed on the projection 62 from post 16.

The position of clamp member 40 longitudinally of the apparatus is determined by the adjustment of arm 54 in the head of post 28.

Arms 56 are rocked in order to o erate the above-described clamping means by means of improved. yielding adjustable connections from a sultable treadle 70. The treadle 7 0 is connected to a two-part treadle rod 72 which can be adjusted for length by loosening a clamp member 74 andon which is adj ustably secured a finger 76 connected by ,means of a coil spring 78 into the projection 62. The coil spring serves to hold the treadle and the movable parts of the clamp in their upper or idle position and need only A be of sufficient strength for this purpose. The upper portion of treadle rod 72 is formed into a head or eye 80 within the hollow portion of post 16, which engages a flange 82 on a sleeve 84 slidingly mounted on treadle rod 7 2 between eye 80and an adjustable stop 83. Sleeve 84 is arranged to operate arms 56 through the medium of a yoke 86 secured to said arms. If desired, it may be keyed to yoke 86 as shown in Fig. 3 to prevent turning. Downward movement which is imparted to sleeve 84, by treadle 70 acting through treadle rod 72, is imparted to the yoke 86 through a stiff coil spring 88 confined between the yoke and head 82 of the sleeve. Upw ard movement of sleeve 84 is transmitted to yoke 86 through a stop 90 adjustably mounted on the. threaded lower end of the sleeve. One purpose of the stop 90 is to permit adjustment of the compression of spring 88. The upper position of clamp 40 may be varied independently of the upper position of treadle 70, if desired, by adjusting stop 83 to allow a greater or less degree of 10st motion of sleeve 84 on red 7 While it is usually preferred to hold the clamp by standing on treadle 70, yet, it preferred, as an alternative construction, a shoe may be held under clamping pressure, by means of a pawl 77 (Fig. 2) engaging a ratchet 75 carried by thetreadle. The pawl may be mounted at 85 on an extension 79 from the frame, and is held against ratchet 75 by a spring 93. It may be released by depressing an auxiliary treadle 91.

It is one purpose of the above-described connections to provide for a heavy predetermined yielding pressure on each last, and in order that this pressure may be readily adjusted to a fixed standard the treadle is provided with a headed device 92 sliding freely in a perforation formed in the treadle and'arranged to have a definite amount, for example one-half inch, of lost motion when the treadle is operated. When it is desired to adjust the clamping means for a given last. shoe and heel, the operator places his foot on the head of the device 92 instead of directly on the treadle, loosens clamp screws 48, depresses the treadle until the device 92 engages the floor, and then tightens clamp screws 48. lVhen the treadle is depressed in this manner it is held at a definite distance from the floor, ordinarily about onehalf inch as suggested above, this distance being determined by the amount of lost motion of device 92. Thereafter in clamping similar lasts, shoes and heels, each time the above-described connections are operated,

'the clamp member 40 will engage the last when the treadle 70 is a definite distance (e. g. one-half inch) from the floor, and further depression of the treadle operates to compress spring 88. This spring is quite stiff and is held under considerable compression so that each last, shoe and heel is held clamped under a heavy yielding pressure of a uniform amount equal to the pressure obtained by compressing spring 88 a definite amount determined by this last increment of the depression of treadle 70.

It will be noted that theabove-described clamping means provides not only a conveniently operated means firmly holding a last, shoe and heel clamped under heavy yielding pressure but that it provides for the utmostsimplicityof adjustment. When anew operator first commences work on an apparatus of this type, he will first adjust posts 28 and 16 to hold the work at a convenient height which is especially suited for him, and will then adjust the position of stop 64 and finger 76 to determine the upper position of the clamp and the treadle. Thereafter the only adjustments which need ordinarily be made, are occasional changes in the height of memher 20, and changes in the position of member 40 with respect to links 46 which are made by use of the device 92 as above-described. Au especially important result of this arrangement is that it permits both of these adjustments to be made by an operator who is standing in his usual position, and without even forcing him to stoop. Another important result is that an arrangement of this sort provides for independence of the various adjustments so that, for example, a change in the height of member 20 does not necessitate a change in any other adjustment in the apparatus.

\Vhen a last, shoe and heel have been clamped as above-described, the operator proceeds to clamp the heel to the shoe and last by 111051115 of a threaded fastener 94, first preparing the heel by the use of a drill 96 and then inserting the fastener by means of a driving device indicated generally at 98. Both of these instrumentalities are driven by an electric motor 100 carried by the standard 12. A toothed gear on the end of the arn'iature shaft of this motor is geared in a one-to-one ratio to a gear which drives a flexible shaft 102 operating drill 96. This shaft is of such stiffness, and a support 104 which carries it is so adjusted, that when the shaft is hanging free the drill 96 is directly above a perforation in the rear end of the last so that the drill may conveniently be passed through this perforation to operate on the heel. lVhen not in use the drill 96 is held in an idle position out of the operators way by means of a hook 106 which is adjustably mounted on the standard 12. If desired a suitable shield or guard may be provided for the drill when it is in this position, since the drill and the driving device 98 are both mounted to rotate constantly while the apparatus is in use.

The gear on the end of the armature shaft of motor 100 also meshes in a ono-to-two ratie with a gear which drives a shaft in an arm 108. This shaft drives. through co-opcrating bevel gears in a head 110, a shaft 112 made up of a universal joint 114, a sleeve 116, and a shaft 118 which is keyed to the sleeve 116 to prevent relative turning movement while pern'iitting the sleeve and the shaft to slide with respect to one another. These connections are arranged to operate a fastener driving or inserting tool indicated generally at 98 and best shown in Fig. 5. This tool comprises a handle portion loosely mounted on the lower end of a sleeve clamped to shaft 118, on which is threaded a member 120. The driving tool itself is indicated at 122, and is threaded into an outer sleeve 124 which is secured to member 120 by a tap screw 126. The outer sleeve 124 is formed with teeth and recesses in its upper surface as shown in Figs. 1 and 5, forming one member of a clutch, the other clutch member being indicated at 128 and being in the form of a second sleeve which is slidable on member 120 but which is keyed thereto to prevent relative rotation. The two parts of the clutch are forced to gether by a coil spring 130, the tension of which may be regulated by lock nuts 132.

liv this arrangement rotation of shaft 119. is transmitted to the driving tool 122 through the clutch composed of members 121 and 128, which may slip relatively to one another when the fastening device 9;. has been driven home. The tool 122 is formed with a suitable recess to receive the eye or head of the fastener 9i and can rotate freely about member 120 except as turned through the above-described clutch. After the clutch begins to slip, the driving device 98 may be held against the head of fastener 94-, and continued rotation of clutch member 128 results in a pounding action of the. co-operating teeth and recesses of the two parts of the clutch which results in driving the fastener 9-1 very firmly into the heel, without any possibility of injury to the driving tool.

The abm'e-deseribed arrangement of the parts of the fastener driving'tool 98 results in an improved action as compared with previous devices ol. this character of which applicant is aware, in that the yieldingly engaged clutch members are arranged to slip readily to prevent any possible damage at the time the fastener 94 is driven home, while they remain in intermittent engage ment with one another to produce the abovedescribed pounding action for tightening the fastener. This is especially important in attaching wood heels according to the method used with the apparatus above described as the fastener 94 is relied upon to hold the heel rigidly against the last and shoe during a number of subsequent operations which tend to displace it.

As shown in Fig. 1 both the drill 96 and the driving tool 98, when innse, hang vertically above the fastener receiving perforation in a last which is held clamped in the apparatus. To hold the fastener driving tool 98 out of the way when not in use, an adjustable post 134 is provided which is formed with a substantially spherical head 136 which can freely rotate on an anti-friction ball bearing 138 (Fig. 6).

In operation, the necessary adjustments having first been made, the operator clamps a last and shoe against the heel, there being a film of adhesive between the heel and the heel seat of the shoe, by manipulation of treadle 70. Vhile standing on the treadle to hold the last, shoe and heel clamped in this manner, (or while they are held by the means"? i pawl and ratchet), he passes the drill 96 through the perforation in the heel endof the last to prepare the heel for the insertion of a fastener. During this drilling operation, the drill is guided by a smooth cylindrical portion 137 which is substantially a sliding fit in the perforation in the last, and the depth of the hole drilled in the heel is determined by engagement otk an abutment or collar 139 with the top of the last. The operator then withdraws the drill and swings it to its idle positionwhere it is retained by the hook 106, inserts a fastener 94: through the perforation in the last and drives it home by the use of fastener driving device 98. 'lheshoe is then removed from the clamping means, and is immediately ready for the performance of any desired finishing operations, since the heel is held rigidly against displacement by its fastener and there is no necessity of waiting for the drying of the adhesive. Moreover such finishing operations are greatly facilitated by the fact that the heel is held by means entirely within the shoe so that the outer surface of the shoe is entirely unobstructed.

lVhile one form of apparatus embodying my invention has been illustrated and de scribed, it is not my intention to limit its scope thereby, or otherwise than by the terms of the appended claims. the herein-disclosed novel features relating to the fastener inserting mechanism are claimed in a divisional application Serial No. 196,245, filed June 3, 1927.

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

1. A shoe support comprising, in combination, means for supporting a heel in upright position, a support for the forward end of a shoe clamped against the heel, said support being mounted for independent tilting and up-and-down adjustment relatively to the heel supporting means, and a member carried by said adjustable support and slidingly clamped therein to engage the side of the shoe to prevent it from turning.

2. A. shoe support comprising, in combination, a fixed standard, a tread plate pivoted thereon, a support for the side surface of a. heel on the tread plate, oscillatable arms, and a toe plate pivotally carried thereby to be tilted and adjusted by oscillating the arms to alme it with the tread plate.

3. A. heel support comprising, in combination, a fixed support, a tread plate pivoted thereto for free tilting adjustment, a member vertically adjustable on said fixed support to engage the side of a heel on the tread plate, and means to fixedly secure said member in vertically adjusted position.

4. A heel clamp comprising, in combination", a bench, standards clamped therein to Certain of be adjusted to suit an operator, toe and heel tread plates pivotall connected to the standards to be brought into substatnial alinement, and a support for the rear surface of a heel slidingly clamped in one standard for vertical adjustment.

5. A clamp comprising, in combination, means .lor supporting in assembled relation a shoe and a heel and a member for engaging the inside or a shoe bottom, a head for engaging said member, a. trcadle, and spr ng connections from the treadle to the head yieldingly to clamp the shoe and the heel and said member together.

(5. A heel clamp comprising, in combination, a bench. standards clamped therein to be adjusted to suit an operator, toe and heel tread plates pivotally connected to the standa rds to be brought into substantial alinement, a support for the rear surface of a heel slidingly clamped in one standard for vertical adjustment, and a clamp device carried by the standards to be adjust-ed therewith.

7. A clamp comprising. in combination, a,

support for a last and shoe and heel, a spindle extending transversely above the last from one side of the last to the other, a pair of links straddling the shoe and the last. sleeves secured to said spindle and slidable upon said links, means for securing said sleeves in different positions of sliding adjustment upon said links, and a last-engaging member frictionally held on the spindle so as to tilt to engage the last firmly.

8. A clamp comprising, in combination, a stationary support for the work, a clamp member, links on opposite sides of the support, spring means to move the links to operate said member to clamp the work against the stationary support, and means to adjust the position of the member on the links to vary the action of the spring means as described.

9. A clamp comprising, in combination, means to support a last, shoe and heel by engagement with the tread faces of the heel and sole of the shoe, a member to engage the last, a treadle, and spring connections from the treadle to produce relative movement between said member and said means yieldingly to clamp said heel against the last and shoe.

10. A clamp comprising, in combination, a support for a heel and a shoe and last to hold them upright, a member to engage the top of the last, a treadle, and spring connections from the treadle to saidmember yieldingly to clamp the last and shoe and heel.

11. A machine as defined by claim 9, in which said connections are adjustable as described, to provide a uniform action on lasts and heels of difierent heights.

12. A clamp comprising, in combination, a support for a last and shoe and heel, a head to engage the last, a. treadle for operating the head to clamp the last and shoe against the heel, and connections between the treadle and said head including a spring to provide a yielding action of the clamp, and an adjustment between the spring and head to preserve uniformity of action of the spring on lasts and heels of different heights as described.

13. A clamp comprising, in combination, a support for a last and shoe and heel, a head to engage the last, links straddling the last to move the head to clamp the last and shoe against the heel, and means adjustably to -clamp the head on the links to fit lasts and heels of dilferent heights.

14. A clamp comprising, in combination, a stationary support for the work. a member to clamp the work thereagainst, links on opposite sides of the support to operate said member, rock arms attached to the ends of the links. and shorter rock arms arranged to support the links at points intermediate the ends of the links and operative to move said member back out of the way as described when the clamp is opened.

15. A clamp comprising, in combination, a support for a last and shoe and heel, a. clamp member to co-operate therewith in holding the heel clamped against the last and shoe, a pair of links supporting the clamp member. and a plurality of rock-arms connected with each of said links at points spaced from each other to move said links in voperating the clamp and to move the clamp over the end of the shoe out of the way when the work is unclamped.

16. A clamp comprising. in combination, a. support for a last and shoe and heel, a clamp member to co-operate therewith in holding the heel clamped against the lastand shoe, links stradding the last to operate said member. rock arms connected to the end of the links, and shorter rock arms arranged to support the links at points intermediate the ends of the links and operative to move the links and clamp member as described.

17. A machine as defined by claim 14. in combination with means to adjust the position of one set of rock arms to vary the position of the clamp member.

18. A machine as defined by claim 14. in combination with an adjustable stop to limit the upward rocking of the arms.

19. A heel clamp comprising, in combination, a support for the l'orepart of a shoe, a support for a last in the shoe, a heel support including a member to engage the rear surface of a Louis heel on the heel-seat ot the shoe. and manually-operable means including a one-way clutch device and a spring for imparting relative yielding movement of varying extent to said supports for clamping the heel against the heel-seat of the shoe.

20. A clamp comprising, in combination,

a stationary support for the Work, a member to clamp the work thereagainst, links on opposite sides of the support to operate said member, and spring-operated rock arms to move the links to open and close the clamp.

21. A clamp for a last and shoe and heel comprising, in combination, a device including a member to engage the tread surface of a heel and a fixed member to engage the side surface of the heel, a device to engage a last in a shoe to which the heel is to be clamped, links straddling the last and shoe and supporting one of said devices, rock arms for moving the links to produce relative movement between said devices to clamp the heel to the shoe, and means for modifying the path of said relative movement.

22. A machine for operating on shoes comprising, in combination, a member to engage the top of a last in a shoe, a treadle to operate the member, and yielding connections therebetween including means to adjust the vertical position of said member and a spring between said means and the treadle.

23. A machine for operating on shoes comprising, in combination, a member to engage the top of a last in a shoe, a treadle to operate the member, and yielding connections therebetween including means to adjust the vertical position of said member and a spring between said means and the treadle, said treadle having a gage to position it at a predetermined distance from its depressed position, so that When the treadle is positioned by the gage adjustment of said means to bring the member in engagement with the work will adjust the connections to provide for a definite yielding of the spring in an amount determined by the gage, when the treadle is subsequently completely depressed access? 24;. A machine for operating on shoes comprising, in combination, a member to engage a last having a shoe mounted thereon, a link carrying said member, a rock arm attached to the link to operate it, and a shorter rock arm pivoted to the link intermediate its ends, to guide said memberback out of the way when it is raised.

25. A machine for operating on shoes comprising, in combination, a member to engage a last having a shoe mounted thereon, a link carrying said member, a rock arm attached to the link to operate it, a shorter rock arm pivoted to the link intern'iediate its ends, to guide said member back out of the way when it is raised, a treadle, and spring connections between the treadle and the longer rock arm.

26. A machine as defined by claim 22, in which the member is adjustably mount-ed on said link, and in which means is provided to position the treadle at a definite distance above its depressed position, so that when the treadle is positioned thereby adjustment of the member to engage the work will determine the extent of yielding of the spring on complete depression of the treadle.

27, A clamp comprising, in combination, means for supporting in assembled relation a shoe and a heel and a member Within the shoe for engaging the shoe bottom. a head to engage said member, links straddling the shoe to move the head to clamp said member and the shoe against the heel, and means adjustable to clamp the head on the links to accommodate heels and bottom engaging members of difi'erent heights.

In testimony whereof I have signed my name to this specification.

FREDEREG E. BERTRAND.

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