US1069053A - Gage for button-sewing machines. - Google Patents

Description

W. L. BARRON. GAGE FOR BUTTON SEWING MACHINES.

APPLICATION FILED SEPT.15, 1911.

Patented July 29, 1913.

A TTOR/VEY WITNESSES:

UNITED STATES PATENT OFFICE.

"WILLIAM L. cannon, or new 2031:, n. in, Assrcnoa TQ 'rnn smcnn MANUFACTUR- rno COMPANY, a coaromrron or new :rnnsnr.

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Specification of Letters Patent.

Patented July 29, 1913.

Application filed September 15, 1911. Serial No. 649,569.

To all whom, it may concern:

therein to the accompanying drawings.

This invention relates to an improvement 'inbutton-fastening machines, and more partieularly to that c ass of machines compris ing stitch-forming mechanism mcludm a "reciprocating needle and button-hold ng means constructed to present for the actionof the stitch-forming mechanism that class of buttons having a shank integral with the head with a transverse aperture parallel with the latter, such as are known to the trade as self-shank buttons.

The invention has for its object to provide a gage independent of the button-holding means and adapted to be shifted into and out of operative relation therewith to gage the position of the eye of a button sustained by sai holding means in operative relation with the needle.

In its preferred form, the improvement comprises a swinging arm or carrier mounted upon a fixed fulcrum and having journa-ledv in its outer end an end-wise movable spring-retracted gage-pin disposed substantially parallel with the needle and adapted to be shifted laterally into and out of operative relation with the button-holder and to be depressed to enter the eye of a button within said holder when correctl positioned to. receive the fastening stitc es, the holder being provided with adjusting means for properly locating the button. An adjustable stop is provided for determining the operative position of the gage-pin carrying arm so as to insure the correct positioning of the gage-pin for different de' cos of relative jog between the button-ho der and the needle whereby the usual overseam fastenstitches are produced.

. in v the accompanying drawings, Figure 1 -thewellilmown the United States is a perspective view of a portion of a sewing machine bed-plate with the jo ging work-clamp and reciprocating need e-bar and needle of a button sewing machine of er type, as disclosed in p aten't to-J. J.- Sullivan No. 777,564, dated 13, 1904;,81111 provided with a button-gage embodying the present improvement. Fig. 2 is a plan view of said parts, upon a larger scale, and with the bed-plate omitted. Fig; 3 is an under side view of a portion of the buttomholder. Fig. 4 is a perspective view of the buttongage detached from the machine, and Fig. 5 a similar view of the spring-arm for controlling t-he gage-pin.

The present improvement is represented in connection with the button-holder forming the subject of my application Serial No. 636,173, filed June 30, 1911.

Sustained upon the sewing machine bedplate 1 is the laterally jogging slide-bar 2 carrying upon its rearward end the block 3 and having secured to its forward end the work-supporting plate 1. constituting the lower member of the work-holder. Journaled in the block 3 for slight vertical movement is the upper work-clamp arm 5 formed with the backwardly oflset forward portion 6 terminating in the button-holder sustaining plate 7, and pressed normally downward with the transverse button-clamp jaw 12,

the adjacent operative extremities of these parts being divergently beveled to 'alfordbutton-head seats 13. Each ofthe jaws 12 is embraced by a U-shaped spring whose rearward limb 14: is secured thereto by means of the fastening screw 15 while the forward limb 16 rests upon'the'outer face of the member 12 and overlies the buttonhead seat 13, so as to produce in conjunction therewith one of the separable parts of the button-head cavity which is disposed in angular relatior'i with the face of the worksupporting plate and parallel with the path ofreciprocation ofthe needle 17 carried by I the rectilinear-1y reciprocating needle-bar 18.

The plamp-levers 11 are provided with depending pins 19 entering the divergently arranged cam-slots 20 of a guide-plate 21 secured to the slide-block 22 which is fitted- W1l3h1n a suitable guide-channel in the bot tom of the sustaining plate 7 and is.nor-- y d wn forward to force the button- P l t gether by means of the spring 110 23 having one end attached to the studscrew 24 passing through the longitudinal slot 25 of the plate 7 and tapped into the slide-block 22, while the other end of such spring is connected with the post 26 secured in the plate 7 The screw 27, also tapped nto the slide-block 22 and working in the guideslot 25, serves, in conjunction with the studscrew 24, to retain the slide-block 22 1n operative relation with the sustaining plate 7. The position of the cam-plate 21, and hence the spacing apart of the button-clamp jaws 13, is determined by means of the stop lever 28, fulcrumed upon the screw-pin 29 and adapted to be clamped adj ustably 1n position by means of the thumb-screw 30 entering its segmental slot 31, and against the edge of which stop-lever the stud-screw 24 normally rests under the action of the spring 23. By loosening the thumb-screw 30, the stop-lever 28 may obviously be shifted todetermine the spacing apart of the relatively inclined button-engaging aws 13 to insure the positioning of the button w1th its eye in reglster with the needle.

The buttons of the class which the present button-holder is designed to accommodate are usually formed with somewhat tapering shanks, so that the'relatively inclined button-engaging jaws present ,to such buttonshanks seats whose spacing apart evidently determines the position of the button relatively to the needle; but even with buttons having cylindrical shanks the holding jaws are so shaped as to engage the button-heads in such manner as to correspondingly position the buttons for the fastening operation.

As represented in Fig. 2, the work-supporting plate 4 is provided at the side of its needle-aperture opposite the button-holding jaws 13 with a rectangularblock 32 formed in the adjacent edge with a projection 33 having a needle clearance notch 34, and overlying the block 32 is the resser-foot 35 secured by means of the-fastening screw 36 to the button-holder sustaining plate 7.

The block 32 and presser-foot 35 are omitted from Fig. 1 in, order to expose more fully the button-holding and positioning j awsand the button sustained thereby in operative relation with the stitch-forming mechanism and the button-gage. Normally overlying the button-head cavity is the operative outer end portion 37 of the laterally swinging button-detaining arm 38 mounted upon the clamp-arm extension 6. Secured upon the bed-plate 1 by means of the fastening screws 39 is the fulcrum-plate. 40 carrying the screw-stud 41 upon which is fulcrumed the swinging gage-carrying arm or carrier 42 having in its outer end the bearing yoke I 43 sustaining the endwise movable gagepin 44 having the head 45 and journaled in an aperture in the lower member of said yoke and m a sinnlar aperturem a bearing plate 46 secured upon the upper member of the yoke by meansof the screw 47 Secured upon the gage-pin intermediate the spaced bearing members of the yoke 43 is a collar 48 formed with a notch 49 to receive the notched outer end portion 50 of the springarm 51 secured upon the arm or carrier 42 by means of the screw 52. Secured to the forward edge of the fulcrum-plate 40 by means of a screw 53 entering a; longitudinal slot 54 therein is a stop-plate 55 formed at one end with the upwardly-projecting stoplug 56 adapted to engage the foot of the carrier-arm 42 when. thrown forwardly to bring its gage-pin in operative relation with the button-holding jaws. By loosening the screw 53, the stop-lug 56 may be adjusted to arrest the forward movement of the carrier-arm 42 in register with the position of the button-eye when suitably held for passage of the needle in the production of the fastening stitches. carries at the opposite edge from the stoplug- 56 a stop-pin 57 adapted to engage-the foot of the carrier-arm to limit its backward movement into inoperative position, as

represented in dotted lines in Fig. 2.

In the use of the machine, the jogging mechanism for the button-holder is adjusted to produce the required throw for production of the desired length offastening stitch, after which the carrier-arm 42 is moved into The fulcrum-plate 40 its operative position as represented in full lines in Fig. 2 to bring its gage-pin 44 a corresponding distance in front of the needle. The stop-plate 55 is then adjusted to bring its stop-lug 56 into operative engagement with the foot of the carrier-lever 42 to insure the arrest of the latter in the same position in its subsequent ,movements into operativeposition from retracted position. A button is then inserted in the buttoncavity with its head a intermediate the clamp-spring arms 16. and the outer portions of the jaws 12 and with its slightly tapered shank b in engagement with the inner extremities of the clamp-jaws. If, upon depression of the gage-pin 44 from the dotted line position to the, full line position represented in Fig. 1 the point of the pin enters theeye 0 of the button accurately, the gage is then'ret-racted into the inoperative position represented in dotted lines in Fig. 2, but if-the button-eye is not so p0sitioned, the i'elation of the button-jaws .12

is adjusted by shifting the stop-lever 28 so that the button-eye is presented precisely in register with the gage-pin, after which the gage is retracted and the machine is in adjustment for attaching successively a series of buttons of the same size and shape. In changing to another size or pattern of button, it is merely necessary .to shift the button-gage into operative position and to adjust the clamp-jaws suitabl for bringing the button-eye in register therewith, the lateral jogging movement of the clamp caus- 'ing the needle to descend alternately beyond the end of the button-shank and then through the button-eye.

While the button-jaws are not held in position by positivemeans, but merely by the action of the Spring 23 which maintains the stud-screw 24 yieldingly in contact with the stop-lever 28, in practice the springarms 16 have sul'n'cient elasticity to enable them to yield for different sizes and shapes of button-head'before the jaws 12 could be forced apart by the insertion of a button into the button-cavity, so that the jaws 12 in practice retain their positions of adjustment as determined by thestop-lever 28.

While the present improvement is designed more particularly for use in connection with integral-shank buttons with transverse eyes, it is evidently adapted, with such modification as would be obvious to those skilled in such matters, for use in connection with the attachment of flat buttons having eyes passing through their body portions.

Having thus set forth the nature of the invention, what I claim herein is:

1. The combination with stitch-forming mechanism including a reciprocating needle, and a button-holder adapted to receive lateral jogging movements relatively to said needle and provided with jaws formed with divergently arranged button-engaging faces each substantially parallel with the needle,

and adapted for positioning and holding a shank-button to receive faste stitches, of a. button-gage movable in the direction of said jogging movements a range wholly at one side of the needle into and out of register with the shank of a button held by said jaws, and means for adjustingthe button-holding jaws toward and from each other to position the button-shank relatively to the needle.

2. The, combination with stitch-forming mechanism including a reciprocating needle, and a button-holder ovided with buttonengaging'jaws for positioning and holding a button, of a button-gage comprising a rigidly sustained carrier adapted to move and confined to movement wlthin a plane transverse to the needle and a-gage-pin sustained by and against lateral movement rel-.

ative to said carrier and movable endwise in a direction transverse to that of said carr1er.

3. The combination with stitch-forming mechanism including a reciprocating needle, and a button-holder provided with buttonengaging jaws for positioning and holding a button, of a carrier movable relatively to thebutton-engaging jaws, and an endwise movable gage-pin journaled therein substantially parallel with the needle and adapted to be shifted into and out of operative relation with the button-engaging jaws.

4. The combination with stitch-forming mechanism including a reciprocating needle, and a button-holder provided with buttonengaging jaws for positioning and holding a button, of a carrier movable relatively to the button-engaging jaws, and an endwise movable spring-retracted gage pin journaled therein substantially parallel with the needle and adapted to be shifted into and out of operative relation with the buttonengaging aws.

5. The combination with stitch-forming I mechanism including a reciprocating needle, and a button-holder provided with buttonengaging jaws for positioning and holding a button, of a carrier movable-relatively to the button-engaging jaws, an adjustable stop for determining the operative position of said carrier, and an endwise movable gage-pin journaled in said carrier substantially parallel with the needle and adapted to be shifted into and out of operative relation with the button-engaging jaws.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

WILLIAM L BARRON.

HENRI A. KOBJNEHANN, Jr.

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