US454068A - Button-hole stitching and barring machine - Google Patents

Description

(No Model.)

' 5 Sheets-Sheet 1. REED.

BUTTON HLB STITCHING AND BARRING MACHINE.

Patented June 16,1891.

(No Model.) 5 Sheets-Sheet 2, J E. REED.A BUTTON HOLE STITGHING AND EARRING MACHINE.

Patented June 16,1891.

No. 4151,068.v

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5 Sheets-Sheet 3.

(No Model.)

J. H. REED. BUTTON HOLE STITGHING AND BANNING MACHINE.

Patented Jue 16,1891.

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WITNE 5555.

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(No Model.) 5 Sheets-Sheet 4. J. 1:1. REED. BUTTON HOLE STITCHING AND EARRING MACHINE.

Patented June-16,1891.

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(No Model.) 5 sheets-sheet 5. J. 1-1. REED.

BUTTON HOLE STITGHING AND BARRING MACHINE. No. 454,068. l Patented June 16,1891.

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UNITED STATES PATENT OFFICE.

JAMES H. REED, OF LYNN, MASSACHUSETTS, ASSIGNOR TO THE GLOBE BUT- TONHOLE MACHINE COMPANY, OF KITTERY, MAINE.

BUTTON-HOLE STITCHING AND lEARRING MACHINE.

SPECIFICATION forming part of Letters Patent No. 454,068, dated June 16, 1891. Application filed May 5, 1888. Serial No. 272,960. (No model.)

To @ZZ whom, it may concern.-

Be it known that I, J AMES H. REED, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented a new and useful Improvement in Button-Hole Stitching and Barring Machines, of which thevfollowing is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this The invention relates to a button hole stitching and barring machine employing a single reciprocating needle, and it comprises means for presenting the button-hole and material in which the button-hole is formed to the stitch-forming devices and a reciprocating needle, which is caused, in connection with the other stitch-forming devices, to form au overlaid stitch by being moved on differrent vertical planes alternately to enter the button-hole slit and then t-he material at a uniform distance from the edge of the slit,

and which movement continues during the stitching of one side, the eye, and the other side of the button-hole until the end of the button-hole slit is reached, when the needle is automatically caused to take a longer stitch between it-s alternate movements in different planes, whereby a barring-stitch is formed of about twice the length of the normal stitch.

The invention further relates to variousdetails of construction and organization, all of which will hereinafter be described.

Referring to the drawings, Figure l is a view, principally in vertical central section, of the machine. section as that of Fig. l, showing the parts in the position which they occupyr in sewing the barring-stitches. Figs. 3 and 4 are detail views to which reference will hereinafter be made. Fig. 5 is a view in section and'plan Fig. (5 is an inverted plan of a portion of the operative mechanism. Fig. 7 is a plan view of the top, representingthe position of the parts at the beginning of the stitching of the bar. Fig. 8 is a plan view of the machine inverted.

A represents the bed of the machine, upon which is mounted the work-plate a, which carries the clamp-plate a. The clamp-plate has suitable clamps for holding the material specification, in explaining its nature.V

c3, which enga-ges the ratchet-wheel- Fig. is aview upon the sameV upon the plate and spreading the button-hole, and it has a straightforward movement in relation to the button a2, then a movement of a half a revolution about the button, and then a further forward movement upon a straight line imparted to it by means of the feed worm` wheels B B and the connecting bevel-gear B2, (see Fig. 5,) which connects the two wormwheels B B', meshing with bevel-gears formed 6o thereon. The clamp-plate has a guiding-pin which enters the guiding-slot d3, formed in the work plate, and which is engaged by the thread of the worm-wheels in successive order and by carrying or transferring projections or fingers upon the bevelwheel B2. This form of mechanism for feedingthe clampplate in relation to the button is old and need not be more fully described here.

The feeding of the clamp-plate is automati- 7o cally stopped at the completion of the stitching of the last side of the button -hole by means of a pawl-covering plate C, which is caused to be moved by the clamp-plate between the ratchet-wheel c on the shaft c2 of 7 5 the worm-wheel B and the reciprocating pawl This movement of the ratchet-covering plate is obtained by attaching the ratchet-covering plate to a slide-bar c7, which is connected with 8o or secured to the slide-plate c4, (see Figs. 5

and 6,) and this slide-plate c4 is moved by the contact of the edge of the clamp-plate with a block or projection c5, carried thereby, eX- tending through the guide-slot d3 (see Fig. 7) 85 into a position to be moved by the clampplate upon the coming in contact of its edge therewith. This construction, however, is also old, and'is more fully described in Patentv No. 355,028, dated December 28, 1886. 9o

' Before describing the mechanism by which' the needle is caused to be automatically moved 5 by the clamp-plate to increase the length of the stitch in barring I will :first describe, briefly, the needle and manner of reciprocating it and imparting to it alternate movements upon different vertical planes.

D is the needle. It is eye-pointed and carried by the needle-bar d. This needle-bar is supported in suitable bearings in a head d', roo which is supported by the arm or bracket D of the machine, and upon the end of which it is free to be moved horizontally by mechanism hereinafter spcciilcd. The needle is reciprocated by means of a crank-pin (Z2 at the end of the horizontal shaft (Z3, the crankpin entering a slot (Zr1 upon a block carried by the needle-bar, which slot is of sul'licient depth to permit the needle-bar to be moved horizontally relatively tothe crank-pin without disengaging the crank-pin from it. The head (Z is given a horizontal movement toward and from the end of the bracket- D at stated intervals to permit the needle to make the reciprocation first upon one vertical plane and then upon another vertical plane by means of a cam (Z upon the vertical shaft (ZG, which is geared tothe shaft (Z3. The slideplate (Z7, having a cam-pin (ZS, which enters the cam-groove of the cam (Z5, has bearings at (Z9 CZO and engages or is connected with the lower end (Z11 of the lever (ZN. This lever is connected at its upper end with an arm (Z13 extending to the head (Z. I'Ieretol'ore the movement of the lever (Z12 has been the same, imparting to theneedle-bar a step of the same length during the stitching of the entire button-hole. To vary the length of this step,I have mounted the lever (Z12 upon a iulcrum (Z1 l, which is adjustable lengthwise the lever, whereby the extent ot its throw may be varied. I have represented the fulcrum as a block fitted in a long slot (Z1-l in the lever, the block being pivoted by the pivot (Z1G to an arm or support (ZW. This arm or support (Z17 is vertically movable. It .is mounted upon the end ot a guide-rod (ZS, which is itself carried at the end of the lever (Zw, (see Fig. 1,) which is pivoted at (Zio, and which is adapted to be held in a certain or lixed position and then to be automatically released or moved to move the fulcrum 1'* into another or new position. I have represented it as held in ixed position, or such position as the fulcrum (Zl'1 should occupy during the stitching of the sides and eye ot the bntton-hole, by means of a latch block or pin (Z21, (see Fig. 1,) comprising a stud having avertical movement in the bed-plate A and provided with a shoulder (Z22, upon which the end (Zi23 of the slide-plate c4 is adapted to extend, this end forming in eiect a latch. The lower end of the lateh-block bears upon the upper surface of the front end of the lever (Z19 and serves to prevent it from being moved until the latchblock is released by the movement of the slide-plate ci. This move ment of the slide-plate cl takes place at the end of the stitching of the last side ot the button-hole and is caused by the contact of the edge of the clam 3platc with the block c5, carried by said sli e-plate, and this movement of the slide-plate c'1 removes its end (Z23 from over the shoulder (Z22 and permits the spring d2* to move the post (Zs and therefore the fulernm (ZH of the lever (Z271 downwardly in relation to the lever, thereby increasing the length of movement of its upper end. This causes the head (Z and consequently the needle-bar and needle, to make a longerstep, andthe extent ot the increase in length of this step depends upon the extent of movement of the fulcrum. Thelever and fulcrum are so arranged in relation to each other that the increased length of the step of the needle is from one end ot' the shorter step, and preferably not from both ends thereof. The position of the parts whenthe fulcrum has thus been moved to lengthen the step of the needle is represented in Fig. 2. At the completion of lthe stitching of the bar it is d esirable to return theV parts to their original position in order that upon the starting ot the machine in sewing a new button-hole the needle may make the shorter step, and I have represented this as accomplished by providing the clampplate a with an arm E, extending laterally therefrom and having an inclined downwardly-cxtending projection c. This projection is so placed in relation to the clamp-plate that it is brought into a position adjacent to the latch-pin (ZZ1 at the completion ot' the stitching ot' the bar, and to turn the clamp-plate back to its original position preparatory to stitching a new button-hole it is necessaryto move the arm E and incline e over the upper end ot the step-pin, (see Fig. 4,) and this brings the incline c in contact therewith and forces it downward. This movement of the clamp-plate also releases the slide-plate cl and allows it to be moved backward to its original or normal position bythe springs c, (see Fig. 5,) and consequently the latch end (1.23 is drawn against the latch-pin (Z21, and when it has been pressed downward sutli ciently shuts over the shoulder (Z22, and serves to lock tlielatel1-pin in a position to lock the lever, and also to compress the spring (Z2 that is, the action of returning the clampplate to its normal position causes the fulcrunl (Z1'l to be returned to its normal ororiginal position and compresses the spring (Z2I and locks the fulcrum in said position, and also the spring, by means of the lever (Zf.

The stitch-forming devices, in addition to the needle D, comprise the reciprocating looper F, carried upon a slide-plate f, which is operated by a cam f on the vertical shaft (Z", and a looper opener or holderf2, which is carried at the end ot' the lever f, also operated by the cam f on the shaft (ZU. This form of looping mechanism is well known and need not be further described here.

In operation thc material in which the buttonhole is stitched is mounted upon the clampplate and is fed to the stitclrforming devices by the movement oi' the clamp-plate forward in relation to :he button or throat, then upon an arc of the circle about the button or throat, and then forward again in a straight line, the movement of the clampplate being an intermittent 011e and the needle being operated to iirst enter the material and then the button-hole slit to make an overedge-stiteh, the needle being reci procated alternately upon planes which take it through the but- TIO ton-hole slit and then through the edge of the material parallel therewith. At the end of the stitching of the last side of the buttonhole the clamp -plate causes the space between the two planes in which the needle reciprocates to be increased to about double its former length automatically, and this is accomplished by changing the fulcrum of the lever which operates the head carrying'the needle-bar to provide it with a longer throw, and this change in fulcrum is accomplished by the contact of the edge of the clamp-plate with a block mounted upon a slide and adapted to permit movement to be communicated to the fulcrurn of the lever upon its movement by the clamp -plate. As many barring-stitches may be taken as desired. Upon the completion of the button-hole and return of the clamp-plate to its original position the devices are operated for automatically returning the fulcrum to its original position.

I would say I do not confine the invention, so far as changing the length of the step of the needle to automatically form a barringstitch is concerned, to a machine having the method of presenting the material herein indicated, as it may be employed with a machine having any form of feed mechanism for the presentation ot work to the stitchforming devices or of the stitch-forming devices to the work.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United Statesl. In a button-hole stitching' and barring machine, the combination, with the needle and looping devices and mechanism for operating. said needle vertically, of a mechanism comprising acam and lever and suitable connections for imparting horizontal movements to said needle, said lever having an adjustable fulcrum, a traveling work-clamp, and connections between said work clamp and said fulcrum, 'whereby the latter will be shifted when the end of a button-hole is reached to increase the horizontal movements of the needle and form barring-stitches, substantially as set forth.

2. The combination,in a button-hole stitching and barring machine, of the work holding and presenting devices, suitable looping mechanism, the needle-bar supported or carried by a head, an eye-pointed needle attached thereto, a camv and lever for imparting to said head intermittent periods of travel and rest, a fulcrum-block for varying the throw of the lever, and the clamp-plate coacting with a lever and vertical rod for controlling or moving it, substantially as specified.

3. The combination, in a button-hole stitching and barring machine, of work holding and presenting' devices, suitable looping mechanism, the head d', the needle-bar CZ, the needle D, the bracket D', a device for imparting a traversing movement to the head, the arm CPS, cam d5, lever du, fulcrum-block d, post or support C118, and devices for automatically moving the fulcrurn block, comprising the said post C118, the spring 24, and the clampplate connected with said post C118, as specified, substantially as described.

et. The combination, in a button-hole stitching and barring machine, of the work holding and presenting devices, suitable looping mechanism, the bracket D', the head d, the reciprocating needle-bar d, the needle D, a cam and lever for moving the head d to communicate a step orV traversing movement to the needle, a fulcrum-block held in its normal position by a latch, a vertical rod attached to the arm carrying the fulcrum-block, a spring for moving said fulcrum-block in one direction, and a block on the slide-plate with which the clamp-plate engages to automatically release the latch at the end of the stitching of the last side of the button-hole, substantially as described.

The combination, in a button-hole stitching and barring machine, ot work holding and present-ing devices, suitable looping mechanism, the bracket or support D', the head d', needle-bar d, the needle D, a device for imparting a traversing movement to the head, substantially as specified,- and mechanism for automatically increasing the length of said back-and-forth movement of the head, comprising a fulcrum-block, a vertical rod attached to the arm carrying' the fulcrum-block, a spring for moving it in one direct-ion, and the lever automatically actuated, as described, for moving it in a reverse direction, substantially as specified.

6. The combination, in abutton-hole stitching and barring machine, of the work holding and presenting devices,suitable looping mechanism, the head d, having a traversing movement upon thebracketD,the needle-bar d, the needle D, andmechanism for providing the head, bar, and needle with the traversing movement, comprising the lever dlz, rod CFS, connecting'one end of the le ver withthe head, a cam for operating the said lever, the fulcrum-bloclga spring for moving said fulcrum-block in one direction, and the devices for moving it in the reverse direction, comprising the lever d, latch-block d, latch C123, slide-plate c4, and the clamp-plate a', substantially as described.

JAMES H. REED.

Witnesses:

F. F. RAYMOND, 2d, J. M. DoLAN.

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