US1243228A - Rounding-machine. - Google Patents

Description

A. R. SCHOENKY.

ROUNDING MACHINE. 7

APPLICATION FILED JUNE 2. 191a.

Patented Oct. 16,1917.

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A. R. SCHOENKY; ROUND ING MACHINE.

APPLICATION FILED JUNE 2. 191a.

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Patented Oct. 16,1917.

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ROUNDING MACHINE. APPLICATION man man. ms.

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Patented Oct. 16, 1917.

A. 'R. SCHOENKY.

nouuoms MACHINE. APPLICATION FILED IUNEZ, 9H5. 77 1,243,228. Patented Oct. 16,1917.

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7 AUGUST R. SCI-IOENKY, OF SOMERVILLE, .MASSAGI-IUSETTS, ASSIGNOR T0 REEGE SHOE MACHINERY COMPANY, OF BOSTON, MASSACHUSEETS, A CORPORATION OF MAINE.

RO U NDIN'G-MACHINE.

Specification of Letters Patent.

Patented Oct. 16, 1917.

Application filed June "2, 1916. Serial no. 101,628.

To all whom it may concern:

Be it known that I, Aucusr R. Sononn KY, a citizen of the United States of America, and a resident of Somerville, in the county of Middlesex and Commonwealth of Massachusetts, have invented certain new and useful Improvements, in Rouriding-Machines, of which the followingis a specification.

This invention relates to rounding machines for rounding or trimming the edges of boot or shoe soles preparatory to the final sole stitching operation thereon.

In the manufacture of boots and shoes, particularly those wherein a welt is used, the outsole is temporarily attached to the insole and welt in usual or well-known manner, and thereafter, while the last is still in the shoe, is presented to the rounding or trimming machine forthe socalled rough rounding operation.

This operationhasbeen accomplished gen-' erally by feeding the work in front of a,

rapidly oscillating trimming knife, and has at times been accompanied by an outsole channeling as well as a welt gutterin'g operation.

Heretofore, the work clamp and feed and the parts carried or influenced thereby, have been actuated directly, or indirectly, by or through cams or levers. The object of this invention is'to provide rounding machine that is cheap,

simple in construction, li ght running and capable of high speed without the use of a multiplicity of noisy, jar and wear producing cams and cam operatedlevers.- Another object of the inventionis to produce a feeding mechanism, one element of which is a four motion device having some of its motions imparted to link and lever connections with a main shaft, while other of its motions are imparted to it by means of a cam controlled lever of extremely slight movement.

Another object of the invention is to supply a rounding machine with anoutside channeling, and a weltguttering tool, both actuated or influenced 1n their action directly or indirectly by means of link and lover connections to them or cooperating devices, and the crankshaft.

I-E'erein' the trimming knife, the-work 1 and s etsj sft l that are carried. 9

cam controlledit by means of flue-need in their action by the said feeding devices, are actuated from a rotating crank shaft by or through, directly or indirectly, link and lever connections between them or cooperating devices, and the said crank shaft.

It isa well-known fact that in the use of link motions, ease and harmony of action are obtained, combined with the elimination of noise and undue wear.

These features are very essential in this class of machine where high speed is re-' quired, and they are, therefore, objects of thepresent invention.

For thep-urpose of illustratingthe invention, one preferred form thereof is illus trated in the drawings, this form having been found to give satisfactory and reliable results, although it is to be understood that the-various instrumentalities of which the invention consists can be variously arranged and organized,- and that the invention is not limited to the precisearrangement and orherein shown and described.

Of the drawings: V

Figure 1 represents a front elevation of a well-known type of rounding machine to which thepresent invention is applied.

Fig. 2 represents a left side elevation thereof, some ofthe parts being shown in dotted lines, others omitted for clearness.

F ig.. 3 represents a top plan view of Fig. 1. 1

Fig. 4 represents asection on the line 4+4, Fig. 3, some of the parts being omit-ted.

Fig. 5 represents a section through an unfinished shoe, showing the operations'rcquired at the sole edge thereof. 7

F ig. 6 represents a top plan view similar to Fig. 3, some of the parts being broken out to show parts of the feeding mechanism and actuating links therefor.

Fig. 7 represents a section on the line 77, F ig. 6, including some of the parts not shown in Fig. 6, and omitting others;

Fig. 8 represents a left side elevation similar to Fig. 2, with the side frame removed, and certain other parts, omitted or broken away to more clearly-show the crank and some of the link and lever connections that actuate the feed devices.

Fig. 9 represents a part section, on the line fi -9, Fig. 8, showing the feed crank and some of its link and lever attachments.

that are well-known in this type of machine,

and for which reference maybe hadto a prior Patent #1940333, dated October 8, 1912. r I

Other of the devices, though not newin themselves, will be more fully described, together with their new and novel actuating means. V

As in the above-mentioned patent, the column a having the flanged top a is of suitable shape and construction as to be prefer? ably secured tothe floor and adapted to carry the working parts to be described as well as the necessary levers or pedalsfnot shown, to operate said parts.

The side frames A A suitably secured to the flanged top a are provided with bearings for the several shafts or studs to be described.

' The rotatable work rest B, which cooperates with the front Work feed and clamping member D to clamp and feed the work, the oscillating knife C, the crease guide E and the last guide F, together withthe channel knife H and the guttering tool G are or may be as shown and described in said prior patent. These devices will not be further described at this time, description is necessary to enable this invention to be understood.

Viewing Fig, 5, the operations to be performed upon the edge of the outsole and the co-extending welt will be understood. The trimming knife 0 in its rapid oscillation is adapted to trim or round the outsole at approximately the tance from the last contained shoe X, ac-

rounded, and the requirements thereof. Simultaneously and progressively therewith, the channeling or lip trimming knife H and the guttering tool G are adapted to perform 72 forming part of the upright bar 6 which in turn is carried by the spring pressed slide bar 6 the said bar 6' being slidably retained in its forward position shown. in the drawings by means of the spring 6 adjust able as to compression by means of the screws 6 i groove of a cam 21 fast on and only when such line w a greater or less dis;

cording to the part of the shoe sole being The operations to be performed, and

.tively short straight link Upwardly extending from the flanged top a is the pivot stud 10 about which is adapted to swing the arm 11, its right end being embraced by the slide bar I), gasuitable guideway being provided-thereon for said bar.

The hub 12 of the arm 11 is provided with a flange 13 to which is adjustably secured the arm 14:, saidarm loosely embracing the stud 10 and having rearwardly extending lugs 15 threaded to receive the adjusting screws 16.

Swiveled in the flange 13 is a square headed stud 17 against opposite sides of which the adjusting screws 16 are adapted to be set. r

.Pivotedto the forward end of the arm 1 1 is a link 18 its right end being in turn pivoted to a split collar 19 surrounding the grooved hub (Z of a bell crank lever (Z said lever (Z having a rearwardly extending arm (Z provided with a roller 20 engaging the the shaft WV, said groove and roller being of sufficient depth and lengthas to permit of relative lateral movement during without becoming disengaged.

The depending arm of the has fast therewith a plate or work rest D by means of screws al -(Z said plate D being movable toward and from the work rest B to effect clamping and unclamping of the work positioned therebetweenQ as well as being movable laterally with said rest B to effect the feeding operation. 1

This last mentioned lateral movement of hell crank (Z the feeding operation 1 ice the work rests and the mechanism to obtain 3 link 23 in turn pivoted at '24: to the side frame A the'link's 22- 23 forming a toggle. The joint or breaking point of the toggle has pivotally connected thereto a compound link 25, connected to a lever 26 fast on the rock shaft 27 '(se'e Figs. l6). Fast on said shaft 27 (see Fig. 3) and forwardly extending therefrom is the lever 28 to which is pivotally connected the toggle composed of the rela- 29 and the longer curved link 30, said link 30 being'suitably swung about astud 31 extending from the side frame A The toggle joint 32 is loosely connected to the pitman 33 the upper end of which loosely surrounds the'crank pin 3 1 of the shaft W (see Figs. 8, 9, 10, ,11, and 12).

It will thus be seen that rotation of the shaft WV through the links and levers just described will transform the rotary motion to a horizontal reciprocatory motion which will be imparted to the work rests B and D. it being possible with thisv construction and arrangement of links and levers to Obtain work rest B-has pivoted I a 7195 link 22, its other end being pivoted to the itsrear end being pivotally the necessary rapid action of the feeding devices to feed, and return, and at the same time at the end of each movement, to arrest the rapidity of movement of the said rests B and D to cause them to become quiescent, or practically so through several degrees of rotation of the crank pin 34 (see Fig. 12), this arrest of movement of the rests B and D enabling the cam controlled bell crank lever (Z to perform the clamping and unclamping action of the plate D.

As will be seen viewing Fig. 12, this arrangement also insures a more rapid return of the feeding devices to their starting position than is imparted to them during the feeding movement thereof.

Since the work rest roll B is normally pressed forward in the position shown in the drawings, it is necessary to provide means to retract the said rest B and-its slide 7) in order that work may be inserted or placed between the said rest B and the Work rest and clamp plate D. To this end a rock shaft 6 (see Figs. 1, 6, and 7) has at its inner end fast thereto a depending arm I) having a lug b projecting therefrom adapted to engage a lug b of the slide bar Z). Forwardly extending from the shaft 6 and fast therewith is a lever 6 adapted to be connected by a rod or chain to a pedal not shown.

It will be readily understood that by depressing the lever 6 the work rest B will be retracted sufiiciently to permit theoperator to insert the work between said rests B and D. In order to properly guide the work during its passage before the cutter C a crease guide E is provided in the form of a U-shaped member (Figs. 1, 2, a'nd'8) said member being adjustably secured to the ends of a pivoted upwardly spring pressed lever e, bythe screws 6 the spring '6 normally holding the free end of said lever e in con tact with a shoulder d formed on the de pending arm of the bell crank lever d as in said prior patent, and'the crease guide E being centrally cut awayto accommodate the plate D, previously referred to, as well as to permit the guttering tool Gr to have access to the work at certain times.

It will be understood that the crease guide E when the clamp plate D is released therefrom, and so serves until the work is again clamped and fed; indicated at G is a flexible Y-sha-ped evice secured to the crease guide E by the screws 6/, and by means of its spring like flexibility, is a'da-ptedto be placed into and out of operative relation to the work by means of a last or fore part guide F.

In the rounding operation of shoesoles it is desirable to round or trim the sole closer to the upper, or last, at the shank of the shoe t n i is a th or p t of the shoe.

with the shoe.

serves as a stationary rest for the work The welt gutteri'n tool' To accomplish this result two guide members are generally used.

In this instance, the crease guide E is used exclusively when the shank of the shoe sOle is being rounded, and when the fore part is being operated upon a last or a fore part guide F is brought into action, the said guide F being a spring pressed member pivoted to the end of a lever swing about the shaft 7, the spring normally holding the guide F out of operative position, as shown in Figs. 1 and 2.

To lower the last or fore part guide into its operative position, a rod 35 is attached to to the lever f and extends therefrom to the floor, where it is adapted to be connected to a suitable treadle not shown. Downward movement of the rod 35 carries with it the arm f and attached guide F into contact as shown in Fig. 8 of the drawings.

The downward movement of the guide F is limited by the curved upstanding extension f of the lever 7, having a stud or luglike portion 7 extending therefrom adapted to engage the sleeve 7" surrounding the shaft W It is obvious that when the treadle is released the spring 7 will return the guide F to its former position. Viewing Figs. 1, 2, and 8, the rolls 36 will be seen journaled in the plate 7 and in such position relatively to the guttering tool G that upon the descent of the guide F to" its operative position the rolls 36 will force it into position to operation.

The groove or gutter formed by the tool G in the top side of the welt is for the purpose of allowing thestitches, to be subsequently made during the outsole attaching operation, to be drawn into the welt below the surface thereof, thereby giving a neater appearance to the finished shoe. As the stitching does not show plainly at the shank of the shoe, it is not deemed expedient or necessary to gutter the welt at that place, hence the control of the guttering tool G is left to the last guide F, as the said guide for the best results must be used to guide the shoe when rounding the fore part. As the guide F contacts with the shoe, it will force the shoe slightly downward a predetermined amount, thereby widening the margin of the outsole and Welt to be trimmed around the fore part. 7

The lip forming or channeling knife H, previously referred to, is attached to the front edge of the plate 6 and adapted to be raised slightly simultaneously with the lowperform its proper ering of the shoe when forced downwardly by the guide .F, this actionserving to bring 7 adapted to contact with the tool G andthe channel or lip, closer to the edge of the l shoe, as determined by the cutter C.

Pivotedto the slide bar 6 at 6 is a rearwardly extending lover I). Interposed between the fore part guide carrying lever f and the said lever Z2 is a link 6 having round heads at either end and adapted to be adjustably seated in sockets provided in the levers j and I) a spring 6 tending to hold the two levers together. In practice the pivot 6 for the arm 6 is a rock shaft and has fast upon it a toothed segment (not shown) which engages teeth out in the back of the upright bar 6 said bar 6 being guidedin suitable ways in the end I) of the slide bar If.

Raising or lowering the guide F out of or into operative position effects the relative operative position of the channeling tool H. through the medium of the devices above described.

Assuming that the clamping and feeding devices are in position to receive the work,

the said position would be slightly to the right of that shown in Fig. 1 of the drawing. The work rest B vis now rearwardly pressed by rocking the shaft 6 and the work is thereafter inserted between the roll B and the crease guide E, the work being forced upwardly to insure a good guiding contact for the crease guide E between the top side of the welt and the shoe form. The machine will now start its operations upon the shoe, and the'cam 21, acting through the bell crank (Z will immediately bring the work clamp and feed member D into clamp ing position,

The work clamp and feed member D which depends upon its lateral movement is adjusted to its proper relative position by means of the screws 16 and secured in said adjusted position by the bolts 37. The holes in the arm 14 through which the said bolts pass are of such size as to permit of said adjustment. This adjustment of making the clamping and feeding parts with any great degree of precision or extreme accuracy of setting. The shoe having been clamped between thework rests, the feeding and cutting operations now commence. As previously explained, the crank pin 84 through its several link and lever connections, moves the feeding devices and the work clamped therein from the starting position toward the left of Fig. 1 a predetermined distance, somewhat less than the width of the rounding or trimming knife C. For each feeding movement of the work, the cutter C is given a cutting stroke, the knife C being mounted at the free end of an oscillating arm 0, which has pivotally connected therewith the upper end 0 of which loosely surrounds the crank pin 0 of the shaft- W.

AS before'ex lained, the feeding devices lmpinging the work between it and the yieldingly mounted work rest B.

the arms 1& and 11 for is one that obviates the necessity near the end of their feeding movement are arrested, ample time being allowed for the cutter C to perform its function and for the cam'21 to operate to unclamp the work prior roll 13 is revoluble and the clamping mem ber 'D is not now in contact with the work which is held stationary by'the vertical knife, the return movement of these devices is made easily, and relatively faster than the feeding movement thereof. During the return movement the channeling or lip cutting operation takes place. As the rounding of the shoe is started at the shank, the above described cycle of operation will continue until the fore partof the shoe is reached, whereupon the-operator will vcause the last or fore part guide F to descend to guide the shoe during the round ing of that portion of the shoe.

The descent'of the guide F having also put the guttering tool G into operative position, it willbe readily understood that subsequent feeding operations of the work will cause the guttering tool Gr to perform its function simultaneously with the feeding operationy hen the fore part has been rounded and the shank on the opposite side of the shoe held by the roll B against the crease guide E and since the is to be finished, the fore part guide is allowed to assume its former position, as shown in Figs. 1 and2, and automatically therewith the guttering tool G will spring out of operative cont-act with the worln It is believed that the operation and many advantages of this invention will be fully understood from the foregoing description.

Having thus described my invention, I claimr thereon; wo k clamp feeding devices; a work guide; carriers for said feeding devices; link and lever connections between said crank and said carriers adapted to move said carriers in unison in opposite directions.

2. In a rounding-machine of the class 3; In a rounding machine of the class described, in'combination, a shaft; a crank thereon; a clamp feeding device; a cutting tool movable with said device; a work guide;

I 1. In a rounding machine of the class described, in combination, a shaft; a crank carriers for said device adapted to move in unison; and link and lever connections between said crank and said carriers adapted to move said carriers in opposite directions.

4. In a rounding machine of the class described, in combination, a shaft; a crank thereon; clamp feeding devices adapted to move in rectilinear paths when clamped; carriers therefor adapted to move in unison; and link and lever connections between said crank and said carriers so arranged as toimpart oscillatory movements to said carriers.

5. In a rounding machine of the class described, in combination, a shaft; a crank thereon; clamp feeding devices arranged to be moved in rectilinear paths when clamped; carriers therefor arranged to oscillate in paths perpendicular to each other; and link and lever connections between said crank and said carriers adapted to oscillate said carriers in said paths.

6. In a device of the class described, a drive shaft, a vibrating work feeding memher, a cutting tool mounted thereon, and link and lever crank connections between the said drive shaft and said member adapted to feed the work in one direction of its movement, at one speed, and to operate the cutting tool in the other direction of its movement at a different speed. i

7. In a device of the class described, a drive shaft, a work feeding device, a guttering tool, means to move said guttering tool into and out of operative position, and link and lever connections between said drive shaft and said feeding device.

8. In a device of the class described, in combination, a drive shaft, a work feeding device, a cutting tool mounted thereon, a guttering tool, and link and lever connections between said drive shaft and said work feeding device.

9. In a device of the class described, in combination, a drive shaft, a crank thereon, a two-part work feeding device, means to effect relative adjustment between said parts of said feeding device, and link and lever connections between said crank and said feeding device.

10. In a rounding machine of the class de scribed, in combination, a rotating shaft; acrank thereon; combined work clamp and feeding devices; carriers for said devices; link and lever connections between said crank and said carriers adapted to move said carriers and said clamp feeding devices to feed the work; and automatic means independent of said link and lever connections to cause said clamp device to clamp prior to feeding.

11. In a rounding machine of the class described, in combination, a shaft; a crank thereon; a two-part work clamp feeding device arranged to move in a rectilinear path when clamped; carriers for said device arranged to move in unison, one of which moves in'a curved path and the other in a straight path; and link and lever connections between said crank and said carriers adapted to move said carriers in their respective paths.

12. In a device of the class described, in combination, a shaft, a crank thereon, a rocking member, link-connections between said crank and said rocking member, a two-part Work clamp feeding deviceadapted to move with the work in one direction, and link connections between said rocking member and said feeding device arranged to move said device in a rectilinear path when clamped adapted to move said feeding device in a curved path.

13. In a device of the class described, in combination, a rotating shaft, a crank there on, a rock shaft, a two-part work clamp feeding device, means to operate said feeding device from said rock shaft in'a rectilinear path when clamped, and link and lever connections between said crank and said rock shaft.

14. In a device of the class described, a rotating shaft, a crank thereon, a rock shaft, a lever thereon, a pitman connected to said crank, and a toggle interposed between said pitman and said rock shaft, a work feeding device, and means to actuate said feeding device from said rock shaft.

15. In a rounding machine of the classdescribed, in combination, a shaft; a crank thereon; a rock shaft; means intermediate said crank and rock shaft to operate said rock shaft; a movable work support; a cut ting tool mounted thereon; a work guide; a clamp member movable with said Work support; carriers for said support and clamp member; a lever on said rock shaft; and link connections between said carriers and said lever.

16. in a device of the class described, in combination, a crank shaft, a rock shaft, levers thereon, pitman and toggle connection between said crank shaft and one of said levers, a work feeding device, and link and toggle connections between the other of said levers and said work feeding device.

17. In a device of the class described, a shaft, cranks thereon, an oscillating trimming knife operated from one of said cranks, a work feeding device adapted to act in timed relation with the said trimming knife, means carried by said work feeding device to clamp the work, and link, lever and toggle connections between another of said cranks and said work feeding device.

18. In a device of the class described, an operating shaft; an actuator movable therewith; a rocking member; link and lever connections between said actuator and said rocking member, so constructed and arranged as to move said rocking member faster in one direction than in the other, and to vcause the stoppage of said rocking member at the ends of its movements during certain degrees of rotation of the operating shaft; work feeding devices; and means to operate said feeding devices from said rocking member. a

19. In a device of the class described, a shaft; a crank thereon; a rock shaft; link and lever connections between said crank and said rock shaft so arranged as to neutralize the effective action of said rock shaft during certain degrees of rotation of the first mentioned shaft; work clamp feeding devices; and means to operate said feeding devices from said rock shaft.

In a device of the class described, a shaft; a crank thereon; a rock shaft; a lever thereon; link connections between said crank and said lever adapted to move said lever in opposite directions; a member coacting with said link connections adapted to con- Copies of this patent may be obtained for .trol the effective action of said connections tions between said rock shaft and said feeding devices.

21. In a rounding machine of the class described, in combination, a shaft; a. crank thereon; a work guide; work clamp-feeding devices; and link and lever connections between said crank and said feeding devices adapted to operate said devices to intermittently feed the work.

22. In a rounding machine of the class described, in combination, a shaft; a crank thereon; a work guide; a work rest; a channeling tool mounted thereon; and link and lever connections between said crank and said work rest adapted to move said work rest in opposite directions.

Signed by me at Boston, Mass, this 31st day of May, 1916.

' AUGUST R. SCHOENKY.

five cents each, by addressing the Commissioner of Patents,

Washington, .D. G.

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