US699679A - Stitch-separating machine. - Google Patents

Description

Patented May l3, I902.

J. B. HADAWAY.

STITCH SEPARATING MACHINE.

(Application filed Mm. 5. 1901.)

6 Sheets Sheet 1.

(N0 Model) THk'. MoRms PETERS cov PHOTO-IMO WASHINGTON, o. a

No. 699,679. Patented May l3, I902.

J. B. HADAWAY. STITCH SEPABA'TING MACHINE.

. (Application filed Mar. 5. 1901.) (No Model.) 6 Sheets-Sheet 2.

5M" 6? W A? m: Nana's vn-zns do, PAOYfi-IITMO, WASHINGYON. o. c

Patented May l3, I902.

J. B. HADAWAY;

STITCH SEPARATING MACHINE.

(Application filed Mar. 5, 1901.)

6 Sheet s-Sheet 3.

1N0 Model.)

m: "owns PETERS co.. PHom-umo No. 699,679, Patented Ma I3, I90? J. B. HADAWAY.

STITCH SEPARATING MACHINE.

(Application filed Mar. 5. 1901.) 7 (No Model. 6 Sheets $hee-t 4.

I L/ Q/ m: ucmms PETERS co. PHOTO-LIITHO. \vasmnmox, 11cv Patented May l3, I902.

J. B. HADAWAY.

STITCH SEPARATING MACHINE.

(Application filed Mm. 5, T901.)

6 Sheets-Sheet 5.

(No Model.)

No. 699,679. Patented May l3, I902.

J. B. HAIJAWAY.

STITCH SEPARATING MACHINE.

(Application filed Mar. 5, 1901.) (No Model.) 6 Sheets$haet 6.

1 l i i ll tirrnn Starts Earhart Fries.

STITCH-=SEPA-RATING MACHINE.

SPECIFICATION forming part of Letters Patent No. 699,679, dated May 13, 1902. Application filed March 5, 1901. Serial lilox 49,941. No model.)

To (tZl whom, it 71mg concern.-

Beit known thatLJOHNB. HADAWAY,a citizen of the United States, residing atBrockton, in the county of Plymouth and State of Massachusetts, have invented certain new and useful Improvements in Stitch-Separating 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 make and use the same.

The present invention relates to stitchseparating machines which are now comit appertains to monly used in the manufacture of boots and shoes to indent the material between the stitches appearing on the upper surface of the projecting edge of the sole.

More particularly, my invention relates to machines of the above-mentioned class which are adapted to act upon a boot or shoe after the seam has been finished, although it is not limited to such machines, but may be applied to other types of stitch separating or indenting machines, as will be obvious to those skilled in the art.

The object of the present invention is to provide a stitch-separating machine in which a rocking or oscillating movement is given to the indenting-tool while in engagement with the work to shape and polish the whole or a portion of the crown of a stitch, said movement beingsomewhat similarto thatimparted to a grooved indenting-tool by a workman in separating stitches by hand.

\Vith this object in view my invention consists in providing astitch-separating machine with means independent of the work for imparting to the indenting-tool a polishing and shaping oscillating movement while in contact with the work. The tool may be of any suitable construction which adapts it to indent at least one stitch interval and to shape and polish the whole or a portion-0f the crown of a stitch at each actuation.

In United States Letters Patent Nos. 653,236 and 067,086, granted to me July 10, 1900, and January 29, 1901, are disclosed machines provided with grooved indenting-tools for shaping the crowns of the stitches and with means for oscillating the tools while in contact with the work. In these machines, however, the work acts as a fulcrum for the tool and coning a feeding movement to the tool stituies a portion of the means for oscillating the tool. My present invention is distinguished from the construction shown in these patents in that the means for oscillating the tool is independent of the work, the advantages of which construction will be apparent from the description hereinafter contained.

A pressure sufficient to cause the tool to indent the work may be applied to the tool at any point in its oscillation and may be 0011- tinued during the whole or any portion of the oscillating movement. It is important that the indenting pressure be positive or unyielding as distinguished from a yielding or spring pressure, as it has been found in practice that the requisite amount of pressure to cause an indenting-tool to properly indent the work cannot be satisfactorily applied by means of a spring. Also the depth of the indentations is not aifected by the character of the stock, as is the case where the pressure is yielding.

WVhile my invention is not limited in its broader aspects to means for positively actu ating the indenting-tool to indent the work, a feature of my invention consists in providing a stitch-separating machine with means independent of the work for oscillating the indenting-tool while in engagement with the work and with means for positively actuating the tool to indent the work.

While any suitable means may be provided for feeding the work, I prefer to employ the indenting-tool to perform the feeding function and to oscillate the tool during its feeding movement, and to this end a feature of my jnvention consists in providing a stitchseparating machine With means for impartand simultaneously an oscillating movement. A simple and eflicient means for imparting these movements to the tool is provided by mounting the tool to oscillate about an axis above or below the plane of the surface of the work, and such an arrangement constitutes a feature of my invention.

It is important that means be provided for varying the length of the are through which the indenting-tool oscillates to adapt the machine for operation upon stitches of different lengths or to vary the amount of the polishing action or the depth of the indentations, and

when the tool is arranged to feed the work by 1 being mounted to oscillate about an axis above or below the plane of the surface of the work to vary the length of the feed movements to correspond to the length of the stitches. To this end a feature'of my invention consists in providing means having provision for adjustment for oscillating the tool while in contact with the work.

Preferably the support for the work-is arranged to allow the work to be shifted by the tool to allow the tool to locate itself in the stitch intervals or upon the crowns of the stitches, whether the stitches are of uniform or slightly-varying length. When the worksupport is so arranged, the oscillating movement of the tool, in addition to shaping and polishing the crowns of the stitches, acts effectively to shift the work, as during such movement different portions of the stitch are acted upon, and if the work is not shifted sufficiently by the engagement of the tool with the work in one position it will be shifted when the tool assumes another position. This action of the tool I consider one of the valuable results attained by my invention, especially when the tool is constructed to shape and polish substantially the whole of the crown of a stitch at each actuation.

In addition to the broad features of invention above referred to my invention also consists in the devices and combinations of devices hereinafter described and claimed, which possess certain advantages of construction, arrangement, and mode of operation, as will be obvious to those skilled in the art.

Having thus indicated the general nature and scope of my invention, I will now proceed to describe the specific embodiment thereof illustrated in the accompanying drawings, in which- Figure 1 is a view in front elevation of a stitch-separating machine embodying my invention. Fig. 2 is a view in side elevation of the machine shownin Fig. 1. Fig. 3 is a plan view of the machine. Fig. 4. is an enlarged detail View of a portion of the mechanism shown in Fig. 1. Fig. 5 is a view in front elevation of the tool-stock. Fig. 6 is a view in side elevation of the tool-stock, and Fig. 7 is a plan view thereof. Figs. 8 and 9 are detail views of the adjustable connection between the tool-stock and its actuating mechanism. Figs. 10 and 11 are views in front and side elevation of the indenting-tool detached, and Figs. 12, 13, 14, and are diagrammatic Views illustrating the action of the toolin indenting the stitch intervals and in shaping and polishing the crowns of the stitches.

Referring to the drawings, 1 indicates the frame of the machine, supported upon a suit able standard 2. Journaled in standards 3 at the rear of the frame 1 is a driving-shaft 4, to which are secured the belt-pulley 5, the

hand-wheel 6, and the cams 7 and S, from which the moving parts of the machine are actuated.

9 desi nates a slide mounted to reciprocate vertically in suitable guideways in the machine-frame. This slide constitutes a toolcarrier for moving the tool toward and from the work and is depressed to bring the tool into engagementwith thework by means of a coiled spring 10, connected at its lower end to a hook 11, secured to a fixed part of the frame of the machine, and at its upper end to an adjustable rod 12, secured to ablock 13 at the upper end of the slide 9. The block 13 is secured to the upper end of the slide 9 by means of a screw 14 and pin 15. The upper end of the rod 12 is screw-threaded and is engaged by a nut 16, by means of which the rod can be adjusted vertically in the block 13 to vary the tension of spring 10. The rod is firmlylocked in adjusted position by means of a set-screw 17, passing through the block and bearing against the rod.

18 designates the indenting-tool, which is securely clamped between the jaws 19 of the tool-stock 20 by means of the clamping-screw 21. The tool-stock 20 is carried by the slide 9, and in order to allow the tool to be oscillated while in contact with the work the toolstock is pivotally mounted upon a pivot-pin 22, projecting horizontally from the lower end of the slide. In order to raise the slide 9 to lift the indenting-tool from the work, a lever 23 is loosely pivoted upon a pivot-pin 24, clamped in the upper end of the standard 25 of the machine-frame. The rear end of this lever is provided with a roller which engages the cam-groove 26 in one face of the cam 8, and the front end of thelever is curved and extends beneath a lug 27 on the front face of the tool-stock 20. In the machine shown in the drawings the spring 10 is preferably arranged to press the tool against the work with a comparatively light and yielding pressure not sufficient to materially indent the work, and inorder to exert sufficient pressure upon the tool to indent the work a lug 28is provided on the front face of the toolstock, with which the end of the lever 23 isarranged to engage to positively actuate the tool to indent the work. The engaging surfaces of the lugs 27 and 2S and the front end of lever 23 are curved in the arcs of circles, the center of which is the pivot-pin 22, about which the tool-stock oscillates, whereby the tool can be oscillated when the front end of lever 23 is in contact with either lug. During the first part of the oscillating movement of the tool the tool is yieldingly pressed against the work by the spring 10 for a purpose which will be hereinafter explained, and in order to allow the spring to so act the front of the lever 23 fits loosely between the lugs 27 and 28, so that the tool-stock can move vertically independently of the lever.

For oscillating the tool about the pivot-pin 22 the machine shown in the drawings is provided with the following mechanism Mounted upon a vertically-arranged pivot-pin 29 is a lever 30, the rear end of which is provided with a roll which engages the cam-groove 31 of the cam 7 and the front end of which is connected, by means of a rod 32, to the upper end of the tool-stock 20. To allow for the vertical movements of the tool-stock during the reciprocations of slide 9, the rod 32 is connected to the lever 30 and to the tool-stock 20 by means of ball-and-socket joints. The connection between the rod 32 and the stock 20 is an adjustable one, whereby the extent of the oscillating movement imparted to the tool may be varied as desired. This adj ustable connection consists of a block 33, (shown separately in Figs. 8 and 9,) which is received in a curved slot 34 in the upper end of the tool-stock 20 and held in adjusted position by means of the washer 35 and clamping-nut 36. The block 33 is provided with a spherical socket, which receives the rounded end of the rod 32, the socket and rounded end of the rod forming one of the ball-and-socket joints above referred to. The ball and socket joint between the rod and lever 30 is similar in construction.

In the machine shown in the drawings the work is fed by the oscillating movement of the tool. In order to cause the toolto feed the work, the pivot-pin 22, about which the tool-stock oscillates, is located below the point of the tool, so that when the tool is in contact with the work the axis about which the tool oscillates is below the plane of the surface of the work. By locating the axis about which the tool oscillates below rather than above the plane of the surface of the work the tool acts to better advantage in performing its shaping and polishing functions, in indenting the stitch intervals, and.

in locating itself in the stitch intervals and on the crowns of the stitches, as will be obvious from an inspection of Figs. 12 to 15 and from the description of the operation hereinafter contained. It is to be understood, how ever, that while the construction abovekdescribed is the one which I prefer for the reasons above given my invention is not limited thereto, except where such construction is specifically recited in the claims.

37 designates an upper work-support and crease-gage, which is secured to the frame of the machine and extends into a position to enter the crease between the upper and welt of a shoe when in position to be acted upon by the indenting-tool.

38 designates the lower worksupporhwhich, as shown, consists of a beveled-faced disk mounted to rotate freely upon the upper end of a slide 39, mounted to reciprocate vertically in guideways inthe lower front portion of the machine-frame. The slide is arranged to yield vertically, so that the work-support 38 automatically accommodates itself to dif ferentthickuesses of stock. To allow the slide to yield, it is pressed upwardly by means of a coiled spring 40, surrounding a rod 41, mounted to reciprocate in the sleeve 42,screW-. ing through a bracket 43, projecting from the frame of the machine, said spring being interposed between a projection 44 on the slide 39 and a washer 45, resting on the upper end of sleeve 42. By reason of its screw-threaded engagement with the bracket 43 the sleeve 42 can be adjusted to vary the tension of spring 40, being locked in position after the adjustment by the locking-nut 46. The rod 41 is secured to the projection 44 and is connected by means of a rod or wire 47. to atreadle, (not shown,) whereby the slide 39 and work-support 38 can be depressed against the tension of spring 40 to allow the insertion of the edge of the sole beneath the upper workysupport and gage 37.

In order to lock the slide 39 againstdowm.

, ward movement during the indenting action of the tool, a lever 48, pivoted at 49, is provided, the slotted front end of which engages a block 50, loosely mounted upon a pin 51, extending across an opening in the slide 39, and the rearend of which is provided with a ratchet-toothed segment 52.. Also pivoted at 49 is a locking-lever 53, which is provided intermediate its ends with a pawl or pawls 54, arranged to engage the teeth of theratchetsegment 52 and which is actuated by means of a cam-groove 55 in one of the faces of cam 8, with which a roll on the-rear end of the 1ever engages.

The operation of the machine above described will be understoodfrom an inspection of Figs. 12 to 15, which illustrate diagrammatically the different positionswhich the tool assumes and the action of the. tool upon the stitch intervals and upon the crowns of the stitches.

ures is provided groove between the points for shaping the crowns of the stitches. Theoperation ofthe The tool shown in these fig with two. points, the one which first engages with the work .being slightly longer than the other, and with a IIO machinewhen provided with this tool is as I follows: Starting with the slide 9 raised against the tension of spring 10' by the engagementof the front end of lever .23 with lug 27 of the tool-stock 20 and with the upper end of the tool-stock swung to the right by the action of lever 30, the lever 23 is actuated to'allow the spring 10 to depress the slide 9 and yieldingly press the tool againstthe work in an inclined position, as shown in Fig, mechanism for actuating the tool-stock is adjusted .to give the indent 12. Preferably the ing-tool a throw slightly greater than the average length of the stitch in the work beingoperated upon, As a-result the point of the tool which first engages the work does not enter the interval between the two stitches,

.but strikes slightlyto one side of theinter,

val and upon therounded endof the stitch in the rear of the one aboutto be acted upon.

, shown in Fig. 12.

thereafter as the tool continues to move the work is fed forward by the tool. The oscillation of the tool brings the other point into contact with the crown of the stitch,a'nd thereafter the tool slides over the crown of the stitch while continuing to feed the work until the tool has assumed a vertical position, when the crown of the stitch will be located directly beneath the groove of the tool. This positionof the tool is indicated in Fig. 13. The lever 23 is now actuated to cause its front end to engage projection 28 on the toolstock and positively force the tool into the work, as shown in Fig. 14. By this movement the point of the tool which first engaged the work is forced into the interval between the stitch being acted upon and the stitchin the rear, and the crown of the stitch is shaped, as shown in Fig. 14. The groove of the tool is of such a shape as to pinch in the ends of the stitch and raise the crown of the stitch above its original level. During the continued oscillation of the tool the tool is held unyieldingly in contact with the work by means of lever 23, and during such movement the tool slides over the crown of the stitch while acting to feed the work, thereby polishing and completing the shaping of the crown, and the shorter point of the tool acts to in dent the interval between the stitch being acted upon and the stitch in advance. The lever 23 is now actuated to raise the tool from the work, and the parts are returned to their original position. By adjusting the block 33 in theislot 34: of the tool-stock the extent of the oscillating movements imparted to the tool can be adjusted to correspond to the length of the stitches in the work to be indented. Also by adjusting the block 33 the amount of the polishing action and the depth .of the indentations can be varied as desired. The extent of the oscillating movements can also be varied by adjusting the tool in the clamping-jaws 19 of the tool-stock. During the first portion of the oscillating movement of the tool the work-support 38 is yieldingly pressed upward by the spring 40, the locking-lever 53 being in a position to bring the pawls 54 in contact with the fixed pin 56 and release them from engagement with the toothed segment 52. When the tool assumes a vertical position, the locking-lever 53 is actuated to cause the pawls 54: to engage the toothed segment 52 and lock the work-support 38 from downward movement, and the work-support is held locked during theindenting and continued oscillating movements of the tool, the throw of the lever 53 not being sufiicient to clamp the work between the lower work-support and the upper support and gage 37, so as to prevent the feeding of the work by the tool.

The Work-support of the machine shown in the drawings allows the work to be shifted by the tool in case the tool does not locate itself accurately upon the crowns of the stitches or in the stitch intervals. Thus when the tool is forced from the position shown in Fig. 13 down to the position shown in Fig. 14, if the tool has not located itself properly on account of a variation in the length of the stitches,

the tool will press upon the rounded ends or upon the crown of the stitch and force the work forward or backward to bring the stitch being acted upon into proper relation to the tool. Should the work not be shifted suffi ciently to compensate for the variation in the length of the stitch, the continued oscillating movement of the tool will cause the tool to act upon the crown and upon the interval between the stitch being acted upon and the stitch in advance to shift the work sufficiently to compensate for the variation in the length of the stitch.

It will be understood that while the machine above described embodies my invention in its preferred form my invention is not limited thereto, but maybe embodied in many different constructions without departing from the spirit thereof.

Having thus described my invention, I claim as new and desire to secure by Letters Patent of the United States 1. A stitch-separating machine, having, in combination, a work-support, an indentingtool provided with an indenting portion and with a shaping and polishing portion, means for actuating the tool to indent the work, and means independent of the work for imparting to the tool a shaping and polishing oscillating movement while in engagement with the work, substantially as described.

2. A stitch-separating machine, having, in combination, a work-support, an indentingtool provided with an indenting portion and with a shaping and polishing portion, means for positively actuating the tool to indent the work, and means independent of the work for imparting to the tool a shaping and polishing oscillating movement while in engagement with the work, substantially as described.

3. A stitch-separating machine, having,in combination, a work-support, an indentingtool provided with an indenting portion and with a shaping and polishing portion, means for actuating the tool to indent the work, means :for actuating the tool to feed the work, and for simultaneously imparting to the tool a shaping and polishing oscillating movement, substantially as described.

4. A stitch-separating machine, having, in combination, a work-support, an indentingtool provided with an indenting portion and with a shaping and polishing portion, means for actuating the tool to indent the work, and means for imparting to the tool a shaping and polishing oscillating movement to feed the work, substantially as described.

5. A stitch-separating machine, having, in combination, a work-support, an indenting tool, means for actuating the tool to indent the work, and means for oscillating the tool about an axis below the plane of the surface of the work to feed the work, substantially as described.

6. A stitch-separating machine, having, in combination, a work-support, an oscillating, indenting-tool provided with an indenting portion and with a shaping and polishing portion, means for adjusting said tool toward and from its axis of oscillation, means for actuating the tool to indent the work, and means having provision for adjustment for imparting to the tool a shaping and polishing oscillating movement to'feed the work, substantially as described.

'7. A stitch-separating machine, having, in combination, an indenting-tool provided with an indenting portion and with a shaping and polishing portion, a work-support arranged to allow the work to shift under the action of the tool, means for actuating the tool to indent the work'and means independent of the Work for imparting to the tool a shaping and polishing oscillating movement to cause the tool to act successively on different portions of the work, substantially as described.

8. A stitch-separating machine, having, in combination, an indenting-tool, a yieldinglymounted work-support, means for actuating the tool to indent the work, means for oscillating the tool to feed the work, and means for locking the work-support during the indenting and feeding movements of the tool, substantially as described.

9. A stitch-separating machine, having, in combination, a work-support, a two-pointed indenting-tool, means for actuating the tool to cause one of the points to indent a stitch interval and means independent of the work for oscillating the tool to cause the other point to indent the next adjacent stitch interval, substantially as described.

10. 1-Kstitch-separating machine, having, in combination, a work-support, an indentingtool, means for oscillating the tool to feed the work, means for yieldingly pressing the tool against the work during a portion of its feedin g movement, and means for positively press ing the tool against the work during the remainder of its feeding movement, substantially as described.

11. Astitch-separatingmachine, having, in combination, a work-support, a tool-carrier, an indenting-tool carried thereby, means for actuating the tool-carrier to bring the tool into engagement with the work, and mechanism for oscillating the tool 011 the tool-carrier to feed the work, substantially as described.

12. Astitch-separat-ing machine, having, in combination, a work-support, a two-pointed indenting-tool, means for actuating the tool to indent the work and means independent of the work for oscillating the tool while in ongagement with the work, substantially as described.

13. A stitch-separating machine, having, in combination, a work-support, an oscillating indenting-tool provided with an indenting portion and with a shaping and polishing portion having its working face set off from its axis of oscillation and means independent of the work for imparting to the tool a shaping and polishing oscillating movement, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN B. I'IADAWAY.

Witnesses:

ALFRED II. HILDRETH, BENJAMIN PHILLIPS.

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