US1029837A - Welt-butting machine. - Google Patents

Description

E. E. WINKLEY.

WELT BUTTING MACHINE.

APPLICATION FILED 00-12. 25, 1909.

1,029,837, Patented June 18,1912.

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JQL flag/- [82/ 490 176 COLUMBIA PLANOGRAPII CD.I\VASHINGTON- I) c B. E. WINKLEY.

WELT BUTTING MACHINE.

APPLICATION FILED 00125, 1909.

1,029,837, Patented June 18, 1912.

13 SHEETSSHEET 2.

zgimeasas a7 fnveizzzz r COLUMBIA PLANOGRAIII C0,, WASHINGTON, n. C

E. E. W INKLEY.

WELT BUTTING MACHINE.

APPLIOATION I'ILED OCT. 25, 1909.

13 SHEETS-SHEET 3.

1,029,837, Patented June 18, 1912.

2M 666 I 67m? COLUMBIA PLANOGRAPH CO., WASHINGTON. B4 c.

E. E. W'INKLEY.

WELT BUTTING MACHINE.

APPLICATION FILED 00125, 1909.

1 029 37 Patented June 18, 1912.

13 SHEETS-SHEET 4.

Ems-6'65 mentor W125 m m COLUMBIA PLANOURAPH CO, WASHINGTON, D. C.

E. E. WINKLEY.

WELT BUTTING MAGHINE.

APPLICATION FILED 00125, 1909.

1,029,837, Patented June 18, 1912.

13 SHBETS-BHEBT 5.

mes Inventor lid/2M COLUMBIA PLANOGRAPH c0., WASHINGTON, n c.

E. E. WINKLEY.

WELT BUTTING MACHINE. APPLICATION FILED 001'. 25, 1909.

1,029,837, Patented June 18,1912.

13 SHEETSSHEET 6.

messas mum) COLUMBIA PLANOGRAPH C0,,WASHINGTON. D. c.

E. E. WINKLEY.

WELT BUTTING MAOHINE. APPLICATION FILED 001'. 25, 1909.

Patented June 18, 1912.

TSSHEET 7.

Coumau PLANOGRAPH co, WASHINGTON. n. c.

E. E. WINKLEY.

WELT BUTTING MACHINE.

APPLICATION FILED 00125, 1909.

1,029,837, I Patented June 18,1912.

13 EHEETB-SHEBT 8.

Wmsea meme] COLUMBIA PLANcuRAPH C04. WASHINGTON. D c.

E. E. WINKLEY.

WELT BUTTING MACHINE.

APPLICATION TILED 001'. 25,. 1909.

Patented June 18, 1912.

13 SHEBTS-SHEET 9.

COLUMBIA PLANOGRAPH 60., WASHINGTON n c.

B. B. WINKLBY.

WELT BUTTING MAGHINE.

APPLICATION FILED 00T.25,19 09. 1,029,837.

see

coLuMmA PLANOGRAPH co.,w/\s|nNGTON. n c.

Patented June 18, 1912.

13 SHBETS-SHEET 10.

E. E. WINKLEY.

WELT BUT'ITING MACHINE. APPLICATION FILED 001'. 25, 1909.

Patented June 18, 1912.

13 SHEETS-SHEET 11.

COLUMBIA PLANOGRAPH c0..wAsH|NuTON, D c.

E. E. WINKLEY.

WELT BETTING MACHINE. APPLIOATIOK FILED 001. 25, 1909;

. 1,029,837. Patented June 18,1912.

13 SHEETS-SHEET 12.

I mm? COLUMBIA PLANOORAPH c0.. WASHINGTON. D. c.

E. E. WINKLEY.

WELT BUTTING MACHINE.

APPLIOATION FILED our. 25, 1909.

13 SHEETS-SHEET 13.

Patented June 18, 1912..

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UNITED STACEPLQTENT OFFICE.

ERASTUS E. WINKLEY, or LYNN, MASSACHUSETTS.

WELT-BUT'IING MACHINE.

To all whom it may concern:

Be it known that I, ERASTUS E. WVINKLEY, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in lVelt-Butting Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it a ppertains to make and use the same.

This invention relates to machines for preparing lasted and welted boots and shoes for the sole laying operation. The operations on the shoe at this time include the trimming, to proper length and form by a beveled or skiving cut, of the butt ends of the welt which, when the shoe comes from the welter, are somewhat longer than is desirable. As this is an important feature of these machines the generic name, welt butting machines has been applied to them commercially.

In the welt butting operation the Welt ends are, severed on a transverse line, approximately at the breast line of the heel, so that the welt will not project onto the heel seat and interfere with a proper set of the heel. The butted welt ends are bev eled or scarfed to provide an easy curvature to the outsole and a neat finish to this portion of the shoe.

In addition to means for butting the welt these machines may also employ means for preliminarily locating the welt, relatively to the last, in proper position for the operation of the welt but-ting cutters, and means for securing the butted welt to the insole. It is desirable to sever any surplus inseam stitches which are frequently found to extend rearwardly beyond the point where the welt is to be butted as this operation completes the severance of the butted welt end from the upper and insole and permits its immediate removal from the shoe bottom after the butting operation has been performed. Another desirable operation is that of trimming off any protruding materials on the insole adjacent the butted ends of the welt to provide a smooth surface at the heel end of the shoe thereby insuring an even laying of the outsole and a firm and even seat of the heel thereon.

The present invention has for its principal object the provision of a welt butting ma chine which includes among its operating in- Specification of Letters Patent.

Application filed October 25, 1909.

Serial No. 524,373.

strumentalities improved devices and mechanisms for performing all of the above enumerated operations.

Further objects of the invention are to improve the accuracy, speed of operation and general efliciency of machines for per forming the character of work referred to.

lVith these objects in view one feature of the present invention consists in the 001m bination in a single, organized machine of devices properly to locate the welt relatively to the insole for the welt butting and subsequent sole laying operations, cutters to butt the two welt ends uniformly relatively to each other, and uniformly on all shoes of the same size, with an even and sharply olefined beveled cut the rear end of which is substantially co-incident with the breast line, and a device, preferably a tacker, thereafter to fasten the located and butted welt ends to the insole. Provision for cutting the surplus inseam stitches and leveling the heel seat is also made, although these features of the invention are not deemed essential. Preferably the operation of the machine with respect to all of these features is automatic so that it is merely necessary for the operator to place the shoe in and remove it from the machine.

In accordance with another feature of the invention the welt butting cutters are mounted in laterally movable cutter carrying heads, arranged at each side of a suitably formed shoe rest for positioning the shoe bottom up, and these heads are provided with actuating means for opening and closing them independently of the operation of the cooperating welt locating devices. This permits thewelt to be located on the insole n'eliminarily to and independently of the positioning movement of the cutters. In connection with this feature of the invention means is provided so to control the inward or cutter positioning movement of the cutter carrying heads that the welt butting cutters sustained thereby are invariably placed in proper butting relation to the welt which, in turn, is maintained in proper welt butting and sole laying position relatively to the insole by the welt locating devices.

A further feature of the present invention consists in the construction and arrangement of the devices for severing the inseam stitches beyond the end of the welt cutting stroke of thewelt butting cutters.

In the machine of the present invention Patented June 18, 1912.

the stitch cutters are pivotally mounted on the cutter carrying heads and are normally held retracted from the shoe so as not to interfere with the operation of the welt locators. The manner in which they are mounted permits not only an inward movement into the welt crease and against the stitches but also an upward movement relatively to the insole. The former movement provides for a severance of the excess of stitches and the latter movement permits the welt but-ting cutters to advance beneath the stitch cutters and beyond the end of the butted welt. One object of this continued advance is to permit the welt fastening means to assume its operative position opposite the scarf formed at the ends of the welt by the welt butting cutters. Both of the above mentioned movements of the stitch cutters, in the preferred form of the invention, are controlled by the advance of the welt butting cutters. The laterally movable cutter carrying heads in which both the welt butting and stitch cutters are mounted are held yieldingly against the sides of the shoe and for this reason are somewhat easily displaced.

Another feature of the invention, therefore, contemplates the provision of a device to lock the cutter carrying heads rigidly against outward movement during the operation of the cutters carried thereby, thereby insuring a proper operation of the cutters on the welt and inseam.

Other features of the invention relate to the construction and operation of the means for securing the butted welt to the insole, and to improvements in the construction, arrangement and mode of operation of the characteristic features of this class of machines as a whole.

In the utilization of these features of the invention in their preferred form, the welt locators are advanced inwardly into light contact with the sides of the shoe, and then upwardly, to a position in contact with the grain side of the welt and opposite the welt crease, by one actuating means and thereafter are forced into the welt crease, to act as welt supports or cutting plates for the welt butt-ing cutters, by another actuating means. The angle between the planes of c the surfaces of the welt supports and the line of travel of the welt butting cutters provides forthe desired bevel or scarf on the welt ends. The second actuating means also places the welt and stitch cutters in the positions, relative to the welt, which they assume preparatory to performing their oflices. The welt butting cutters move longitudinally of the shoe, toward the heel, and during their operation, in one embodiment of the invention, the welt is not only smoothed out in advance of their action by suitably formed pressers but the outer welt edge at each end is engaged by a guide which assists in forcing the free welt end 7 stitch cutters are preferably mounted upon cutting blocks having an undercut forward face which assists in securing a clean severance of the welt ends. The cutting blocks are so located that after the welt butting cutters have advanced to the end of their cutting stroke their cutting edges pass be: neath the edges formed by the undercut faces. The shearing action thus obtained insures a clean cut at the welt end. It also places the welt butting cutters in a position to raise the cutting blocks and pass under them during a further advance of the said cutters to a position of non-interference with the operation of devices for guiding and driving a tack into each butted welt end to secure it to the insole. The tacks are preferably inserted through the bevel just formed by the welt butting cutters and, therefore, the tacker throats are mounted so as to be removable from tacking position to permit the welt butting cutters to operate. Preferably, the means for bringing the tacker throats into tacking position also act-uates the devices for delivering tacks from the hoppers to the raceways which supply the throats.

.The features of the invention hereinbefore referred to, including certain details of construction and combinations of parts as will hereinafter appear, will be further explained in the following description and then particularly pointed out in the appended claims.

The preferred embodiment of the invention is illustrated in the accompanying drawings, in which- Figure l is an elevation of the left hand side of the machine showing a shoe p0sitioned for the welt butting operation; Fig. 1 is a detached detail of some of the actuating cams; Fig. 2 is a front elevation showing a shoe, in section, in position to have its welt butted; Fig. 3 is a rear elevation; Fig. t is a longitudinal, vertical section on the line lf of Fig. 5, the operating parts being in the same relative positions as shown in Fig. 1; Fig. 5 is a plan; Fig. 6is a detail, in plan, showing the connection between the two laterally movable cutter carrying heads; Fig. 7 is an elevation of the right hand side of the machine showing the operative parts in the relative positions which they assume prior to placing the shoe in the machine; Fig. 8 is a detail, in rear elevation, of the mechanism for locking the cutter carrying heads against outward move ment after the cutters have been placed in welt butting position; Fig. 9 is a detail, in plan, of the mechanism for adjusting the shoe rest; Fig. 10 is an enlarged detail, partly in section, of some of the parts shown in Fig. t but in the relative positions which they assume before placing the shoe in the machine; Fig. 10 is a detail, in side elevation, of the frictional connection between the welt locator supporting arms and their actuating mechanism; Fig. 11 is a detail, in side elevation, of one of the welt locators; Fig. 12 is a front elevation of the welt locator shown in Fig. 11; Fig. 13 is a detail, in elevation and partly in section, of the inner face of the right hand cutter carrying head, together with thevright hand welt locator, cutter-carrying head locking device, fastener inserting mechanism, and other associated parts, the cover plate for the cutter carrying head, together with the raceway and throat plate, being broken away; Fig. 14; is a detail, similar to Fig. 13,, showing the parts broken away in Fig. 13; Fig. 15 is an end elevation of the right hand cutter carrying head with the throat plate broken away; Fig. 16 is a vertical transverse section on the line 16 16 of Fig. 14; Fig.1? is a detail, in horizontal section on the line 17--17 of Fig. 13, of the combined stitch cutter and cutting block and its operating means; Fig. 18 is a detail, in horizontal section on the line 18-18 of Fig. 13, showing also the mechanism for actuating the welt locators in plan; Fig. 19 is a detail, in front elevation, of a portion of the mechanism for actuating the welt locators; Fig. 20 is a detail, in elevation, showing the parts at the upper portion of Fig.'13, but in a position with the cam head forward and about to move back and raise the hammer; Fig. 21 is a detail, in elevation, showing the parts at the upper portion of Fig. 13, but in a position with the hammer raised and the lock for the cutter carrying heads just about to become operative; Fig. 22 is a detail of the locking device for the cutter carrying heads showing certain parts both in plan and side elevation; Fig. 23 is an elevation of the inside face of the right hand cutter carrying head having a welt presser and welt edge guide mounted thereon; Fig. 2A is a plan of the parts shown in'Fig. 23; Fig. 25 is a front elevation of the parts shown in Fig. 23; Figs. 26, 27 and 28 are diagrammatic views showing the relative positions of the welt butting cutters and throat plates during the operations of butting and securing the welt. Fig. 29 is a diagrammatic view with a welt shown in sect-ion, illustrating the action of the welt presser; and Fig. 30 is a vertical section on the line 3030 of Fig. 29.

In the embodiment of the invention illustrated in the drawings, and referring more parts of the machine are mounted in a frame ing end of the shaft 2 between the frame A and a side bracket A. Above the driving shaft 2 and also journ-aled in the frame A is a cam shaft 6 provided with a series of six cams, best shown in Fig. 3. These cams, reading from left to right in Fig. 3, are a groove cam C in the face of a disk D, an edge cam G a groove cam C in one face of a disk D (in dotted lines), a groove cam C" in the other face of the disk D an edge cam C (in dotted lines), and an edge cam C. At their left hand ends the driving and cam shafts are connected by gears S and 10 respectively, the gears being in the ratio 3:1 so that the driving shaft makes three revolutions to every single revolution of the cam shaft. This arrangement permits the driving shaft to be directly connected to the power shaft but provides ample time for the operations to be performed on the shoe. The machine is provided with a pair of forwardly projecting cutter carrying heads H and H pivoted to swing laterally on the frame A. The machine is also provided with a pair of welt locators mounted upon swinging arms L and L. These arms are pivoted for lateral movement in supporting frames which in turn are pivoted for vertical movement upon the cutter carrying heads H and H. The construction and operation of these parts will be referred to in detail hereinafter. The frame A is pro vided with a top frame A in which is supported a hammer D for actuating the two drivers of the fastening inserting mechanism, which cooperate with the fastening supplying mechanisms S' and S mounted on the frame A to swing laterally with the cutter carrying heads.

The shoe positioning rest comprises a stand 12 formed at its upper end with a V-shaped heel socket 13 and a gage finger 14 which projects forwardly and is adapted to engage the shoe centrally of its heel seat. The stand 12 is mounted in a slide 15 (Figs. 4 and 9) which may be moved in and out, in guideways 16 carried at the base of the frame A, by moving a horizontally arranged lever 17, having one end pivoted at 18 on the frame and connected centrally, by a pin and slot connection, with the slide 15. A frame A is provided with a toothed segment 19 and the lever 17 is provided with a usual form of locking dog 20 so that the stand 12 may be locked in any position of in and out adjustment. This movement of the shoe rest is relative to the welt butting cutters and determines the distance from the heel at which the welt ends are to be butted. The

driving shaft is provided with some suitable and convenient form of one revolution clutch, preferably located inside the pulley 4, but as the clutch forms no part of the present invention it will not be described in detail herein. It is desirable, however, to

refer briefly to the controlling device for the clutch because of the selected speed ratio between the driving and cam shafts.

Referring now to Figs. 2, 4 and 7, the clutch, of whatever type it may be, is thrown in and the machine is set in operation by depressing a treadle (not shown) connected to a treadle rod 21 (Fig. This breaks the toggle 23 and lowers the brake shoe 24 about its pivot, thus removing it from its operative position. Pivoted centrally at 25 in the frame A is a lever 26 having one end connected by a link 27 to the knuckle of the toggle 23 and having at its other end a roll 28 which engages the edge cam C .(Fig. 3). This cam is of such design (see dotted lines Fig. 7) that after the clutch hasbeen thrown into operation by breaking the toggle 23, it

will, by its control of the lever 26, maintain -ward and thus permit the toggle to be straightened.

The preferred formvof the invention may be described briefly as including among its features a pair of combined welt butting and heel seat leveling cutters arranged above the welt and movable longitudinally of the shoe, a pair of welt locating and supporting devices which comprise plates or fingers adapted to be placed against the underside of the welt and forced into the welt crease,

a pair of combined stitch cutters and cutting blocks, and a pair of tackers for driving tacks into the butted ends of the welt. These features of the invention'provide for simultaneously locating and supporting the welt ends in proper butting position relative to the path of travel of the welt butting cutters, insures a clean and square severance of the welt ends, prepares the heel seat for the reception of the outsole, completely severs the butted welt ends from their connection with the upper and insole, and finally, secures the butted welt ends in their sole laying position, in which they have beenplaced prior to the butting operation. 1

Owing to the location of the channel guide just forward of the needle in the welter, it is impossible for the operator when attaching the welt to continue the line of stitches up to the forward heel seat tacks. There is,

therefore, an unsecured portion of the upper between the end of the inseam 'andthe forward heel seat tacks and this portion of the upper is not.only loose on the last but ordinarily is drawn outwardly awayfrom the last by the highly tensioned portions of the quarter at each sideof these points. The end of the welt which. has been attached to this portion of the upper by the welter is also drawn outwardly from the last by the tension on the upper at this point. This, then, is the usual position of the welt ends when the shoe is brought to the machine. If the shoe were placed in the machine and the welt were butted by a longitudinally moving knife while the ends remained in this position, the cut would not be made square across the welt and a portion of the butted welt would project onto the heel seat which is undesirable. Means is provided, therefore, to properly position the welt with relation to the cutters prior to the butting operation by forcing its end inward over the insole preferably through an engagement with the inseam at the point where the upper has been drawn outwardly from the last.

The form and arrangement of the welt locators, adopted for the illustrated embodiment of the invention, is best shown in Figs. 2, 10, 13, 18 and 19. -As heretofore mentioned, they are mounted upon laterally swinging arms L and L which in turn are mounted in frames sustained by the cutter carrying heads H and H. As the form and arrangementof the welt locator at each side of the shoe 'is the same, it will suffice to describe but one of them. Referring now more particularly to Figs. 10 and 13, the right hand welt locator arm-L is segmentshaped and carries at its upper end the welt locator proper 30. The welt locator 30 is adjusted angularly upon its arm L in a manner and for a purpose to be presently described. The arm L is fulcrumed upon a vertically arranged pivot 32 carried by a frame 34, capable of a vertical movement about a horizontally arranged pivot 36 carried in an ear 38 depending from the cutter carrying head H. The welt locator arm L is provided with an inwardly projecting web 40 through which there-is passed a pin 42, having threaded thereon a collar 44 provided with a rounded face adapted to bear in a socket formed'in the rear side of the web. In front of the web the pin 42 is provided with a coiled spring 46, its inner end bearing upon a collar 48 loose on the pin and 42 is provided with a ball (Fig. 10) which is held by a screw plug 51, in a socket in the upper end of a crank 52 pinned to and projecting upwardly from a rock shaft 54 extending across the machine and journaled in the sides of the frame A. At its right hand end the rock shaft 5st has pinned thereto a second upwardly projecting crank 56 having at its upper end a cam roll 57 (Fig. 2) which engages the groove cam C in the cam disk D. Adjacent the inner side of the hub of the crank arm 52 and between this crank arm and the corresponding crank arm 52 for the head H, is the hub of a lever 58 which depends from the rock shaft 54. This lever is loose on the rock shaft and its lower end connected by a link 60 to the knuckle of a vertically arranged toggle formed of lower and upper links 61 and 62 respectively. The lower link 61 has its outer end pivoted to a lug 63 rigidly secured to the base of the frame A. The upper link 62 of the toggle has its outer end pivotally connected to one arm 64 of a double armed lever mounted loosely upon the rock shaft 54 outside of the crank arm 52. The other arm 66 of the double armed lever is provided with a bearing plate 68 having a rounded surface upon which the base of the frame 84 carrying the welt locator support L rests and slides. The bearing plate 68 may be adjusted verti cally relatively to the end of the arm 66 by means of an adjusting screw and lock nut 69, guide pins 70 being provided to prevent its rotation.

The hubs of the crank arm 52 and the lever 58 are cut away at their adjacent faces in a manner to form interlocking shoulders 71 and 72 respectively similar to the shoulders on the ordinary form of dovetail clutch (see Fig. 19) but in the present instance these shoulders are so formed that there is provided a certain amount of loose play between them (see Figs. 10 and 19). The de pending lever 58, being located at the center of the rock shaft 54, may be utilized to operate both of the welt locator arms and, there fore, it is provided with shoulders 72 at each side. Similarly the link 60 may, and does, have its lower end forked and is thus connected to the operating toggles for both of the welt locator arms. An actuation of the central depending lever 58 will, therefore, commuicate motion to both of the welt locator supporting arms L and L in a manner to be now described. At the time a shoe is being placed in position against the heel socket 13 and heel seat gage 1a of the shoe rest and before the clutch has been thrown in by depressing the operating treadle, the welt locate-rs are held by the groove cam C in a posit-ion below the welt, as shown in Fig. 10. They are also swung outwardly at this time to a position removed from the sides of the shoe owing to their being mounted upon the cutter carrying heads, which, before the shoe is placed in the .rnachine. also are in their outward locations. A rotation of the groove cam C immediately imparts a rotary movement to the rock shaft 54. This imparts a movement backward, or to the left in Fig. 10, to the crank arm 52. The de pending lever 58 remains idle during the first portion of the backward movement of the crank arm 52 because the relative positions of this lever and crank arm at this time are such that the shoulders 71 and 72 bet-ween their hubs are separated. The initial rotary movement imparted to the rock shaft'54c merely closes the gap between these two set of shoulders so far as the depending lever 58 is concerned. During the time that this gap between the shoulders 71 and 72 is being closed, however, the backward movement of the crank arm 52 exerts an inward pull upon the pin 42. The pull on this pin acts to move the welt locator supporting arm L inward about its pivot 32. This arm will continue to move inward under the action of the cam C until the welt locator 30 engages the counter of the shoe. At this time the vertical. position of the welt locator still remains as shown in Fig. 10, that is, below and out of contact with the under or grain side of the wel By the time that, or soon after, the welt locator has engaged the counter of the shoe, the shoulders 71 engage the shoulders 72 and a continued movement to the rear of the crank arm 52 will now cause a forward rotation of the depending lever 58 about the rock shaft 54 as a center. After the welt locator 30 has engaged the counter of the shoe, the further throw of the cam C is taken up by a compression of the spring 46. The compression of this spring acts to hold the welt locator against the counter of the shoe but as this spring is a light one the pressure is not great. 7

It is sometimes found convenient to supplement the action of the spring 46 by the additional pressure exerted by a spring 33 coiled around the pivot pin 32 and secured in a manner to exert an inward pressure upon the welt locator arm. The spring 33, however, is not essential to the operation of the welt locators. The forward movement of the depending lever 58, caused by the con tinued rotation of the rock shaft under the action of the cam C, causes its lower end to move to the right in Fig. 10 until it assumes the position shown in Fig. 13, at which time the toggle 61, 62 has been straightened. The straightening of the toggle raises the arm 64 of the double arm lever mounted loosely upon the rock shaft 54 outside of the crank arm 52. The arm 66 of this lever, rising in unison with the arm 64, forces the frame 34, which it supports and which carries the welt locator, upward about the pivot pin 36. During this upward movement the welt 1ocater is continuously pressed against the counter of the hoe by the spring t a1- though it will be understood that the pressure is not sufiicient to mar the upper. The upward movement continues under the straightening action of the toggle until the welt locator passes over the rounded portion of the last adj acentthe breast line of the heel and engages the under or grain side of the welt. The welt locator is formed with an inwardly projecting stitch engaging blade 29 and a cut-away under surfaceBl (see Fig. 12) so that at this time the blade 29 is in a position opposite the welt crease and ready to be forced into the welt crease into contact with the inseam stitches, An inward pressure on the welt locator will, therefore, cause a tightening and stretching of the upper at this portion of the shoe and force the end of the welt inwardly over the insole into position to be butted by the welt butting cutter. The spring 46 is, however, too weak, even when supplemented by the spring 33, to perform this function. In the preferred embodiment of the invention the movement of the welt locators into the welt crease at each side of the shoe is accomplished by means other than the means which place the locators in their positions opposite the ,welt crease. As illustrated, the required inward pressure upon the welt locators is secured from the inward movement of the cutter carrying heads H and H as this provides for an equal inward movement of the welt locators and welt cutters and preserves their relative working positions.

Referring now to Figs. 10 and 15, each of the cutter carrying heads is provided at its outer side with a depending lug 80 in the form of a hook and having its inner surface beveled as at 81. Each of the welt locators 30 is provided with a rearward projection 82 having its underside beveled as at 83, Fig. 12. As the cutter carrying heads are "loved inward by means presently to be described, the beveled surfaces 81 and 83 engage each other before the heads have reached their final position with the welt butting knives in welt butting position above the ends of the welt and thereafter the welt locators 30 are carried inward with the heads. the knives and locators being at this time in the desired relation for proper 0peration on the welt. The preliminary adjustment of the bearing plate 68, of the double armed lever mounted upon the rock shaft 54, has been such that the under or grain side of the welt opposite the center of the blade 29 of the welt locator has been raised just to a position in the plane of cut of the welt butting cutter. This plane of cut is in the plane of the bottom of the cutter carrying heads. If, however, during the operation of the machine, this adjustment is negativedby wear of parts or any other cause, the wedging action of the beveled surfaces 81 and 83 upon the parts 80 and 82 will lift the welt locators 30 about their pivots 36 and bring them into contact with the undersides of the cutter carrying heads thus determining a proper vertical location of the center of the welt locator blade 29. v

Referring now more particularly to Figs. 1, 2, 5, 6, 13, 15, and 16, the construction and operation of the cutter carrying heads will be described. The cutter carrying heads proper comprise the channel shaped members Hand H, already referred to, (see Fig. 16), which at their rear ends are provided with bearings pinned to a vertically arranged stud 84 rotatably mounted in ournals 86 upon the frame A. Each of these heads sustains a casting 88, which in turn supports a hopper 90 for receiving tacks, a guideway for a tack driver 92, and a raceway 9 1 for supplying tacks in a position to be driven by the driver through a throat plate 96 also sustained by the casting. Those parts will be described more in detail hereinafter. Each of the castings 88 is pivoted at their rear ends upon vertical pins 98 (Figs. 4, 5 and 6) which are journaled at their upper ends in a web A (Fig. 5) extending across the top of the hammer supporting frame A and at their lower ends in lugs A (Fig. 6) extending inwardly from the sides of the frame A. The castings 88 project downwardly over the inner sides of the cutter carrying heads H and H and form cover plates 100 (Figs. 14 and 16), which partially close the opening in the sides of these heads. Each casting 88 is connected to its cutter carrying head so that the heads and frames mo've in unison about their vertical pivot pins by means of a bolt 102 (Fig. 7) which is passed through bosses 105 extending from the outside faces of the cutter head and tack hopper. A screw 103 (Fig. 14) securing the cover plate 100 to its cutter carrying head also assists in hold ing these parts together. Each of the tack hoppers 90 is provided at its back, with a web which has formed thereon a toothed segment 104, the teeth of which mesh with each other. One of the hoppers, as shown the right hand hopper in Fig. 6, is provided with an inwardly extended crank 106 and the end of this crank is connected, by a universally connected link 108, to the upper end of a lever 110 (Figs. 3 and 13), which is pivoted upon a stud 112 projecting from a boss 113 on the inner face of the left hand side of the frame A. The lower end, of the lever 110 is provided with a cam roll 114: which bears upon the peripheral cam C (Figs. 1, 1 and The vertical web 89 of each of the castings 88 is provided with an opening near its top and a rod 116 is passed through this opening and is provided on each end with a coiled spring 118 held in position against the web by nuts 119 threaded on the ends of the rod.

With the construction just described, when the machine is at rest the riser of the cam C is beneath the cam roll 11 1 and the cutter carrying heads H and H are held apart by means of the forward pressure exerted by the upper portion of the lever 110 upon the crank 106. At this time the springs 118 are held under compression on the rod 116. When the cam shaft has revolved sufliciently to withdraw the riser of the cam G from beneath the cam roll 11 1, the springs 118 are permitted to expand and thus exert an inward pressure upon the vertical webs of the castings 88 and through this pressure move the cutter carrying heads inward. The springs 118 are of considerable strength although they must not be of greater strength than the inseam on the shoe in order to avoid injury to the shoe. It is the action of these springs which causes the lugs 80 on the outer faces of the cutter carrying heads to engage the projections 82 upon the welt locators, and by means of the inward movement of the heads force the welt locators into the welt crease and against the inseam, thus tightening the upper at the breast line of the heel and forcing the welt in over the insole in proper position to be squarely and evenly butted.

The construction and arrangement of the cutters within the cutter carrying heads are best shown in Figs. 10, 13 and 16, and the diagrammatic views. As the construction, arrangement and operation of these cutters is the same on bot-h sides of the machine, it will suffice to describe but one of them. Referring now to Fig. 16, the inner vertical surface or web of the channel shaped cutter carrying head H is provided with a guideway it which directs the movement of a channel shaped welt butting cutter actuator 120 constructed to slide thereon. This actuator, at the forward end of its upper side, is provided with a head 119 having an under or inner beveled surface 122 (Figs. 10 and 13). The lower side 121 does not project as far forward as the upper side and terminates in a forward bevel 123. Its upper or inner surface forms a shelf 124 (Fig. 16). The under side of the channel shaped head H, does not extend forwardly beyond the shoulder 72/2 (Figs. 7 and 10) and, therefore, forward of this point the under surface of the lower side of 121 of the actuator is flush with the bottom surface of the cutter carrying head. The vertical web of the actuator is provided with a longitudinal slot 125 (see dotted lines Fig. 10) and through this slot there projects .a pin 126 which is threaded into the web of the cutter carrying head (see Fig. 16). The head of this pin projects inwardly through a longitudinal,

slot 127 formed in the freely movable carrier 128 which supports at its forward end the welt butting cutter 130 (Figs. 10 and 15). This cutter comprises a transversely arranged blade, sharpened at its rear edge. This blade projects inwardly from its carrier beyond the cover plate for the inner face of the cutter carrying head over the insole of the shoe, when the head is in its inner position. The knife is held in place upon its carrier by means of a block 129 (Fig. 15), suitably secured to the forward end of, the carrier. A pin 131 (Fig. 10) depends from the rear end of the cutter carrier and is connected by a coiled spring 132 with a second pin 133 (Figs. 7 and 15) carried by the cutter carrying head. This spring is normally under tension and main tains the cutter carrier 128 turned about its pivot 126 in the position shown in Fig. 10. The welt butting cutter actuator 120 is connected by means of a universal link 134 (Figs. 4 and 13) with the upper end. of a cam lever 136 pivoted at its lower end upon a stud 138 (see dotted lines Fig. 3) extending across the frame A at the rear of the machine. The lever 136 is a double lever (see Fig. 3) and at its upper end is connected by similar links 134: to the actuators in both of the cutter carrying heads. The lever 136 is provided between its ends with a cam roll 137 (Fig. 1 which is engaged by the groove cam C in the right hand face (viewing Fig. 3) of the cam disk D on the cam shaft 6.

After the cutter carrying heads have been moved inward into the position already described and the welt ends have been moved inward over the insole by the welt locators so that they lie longitudinally of the shoe and in the line of travel of the welt butting cutters, the cam C operates to move the cam lever 136 to the rear (Fig. 41-), which movement draws the welt butting cutter actuators 120 rearwardly within the cutter carrying heads. The first effect of this rearward movement of the actuators, upon the cutter carriers 128, is to swing them clownward about their pivot pins 126 by reason of the engagement of the bevel surfaces 122 on the heads 121 of the actuators with complemental bevel surfaces at the upper side of the forward ends of the cutter carriers. The welt butt-ing cutters 130 are moved downward in this manner until their cutting edges are in the plane of the bottom of the cutter carrying heads, that is, in the plane of the central portion of the welt locator blades 29. The relative location of the parts just described is best shown, diagrammatically, in Fig. 26. When the cutter carriers have been placed in this position, in addition to the engagement between the bevel surfaces at the forward ends of the actuators and the cutter carriers, these parts

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