US1507885A - Inseam-sewing machine - Google Patents

Description

A. EPPLER INSEAM SEWING MACHINE Sept. 9,1924. 7 1,507,885

Original Filed Aug.- 18, 1919 2 Sheets-Sheet 1 Inventor Sept. 9 1924. 1,507,885

' A. EPPLER INSEAM SEWING MACHINE Original Filed Aug. 18, 1919 2 Sheets-Sheet 2 'L I ntar 14 1 mvwwc Patented Sept. 9, 1924.

' UNITED "STATES,

ANDREW EPPLER, on LYNN, MAssAoncsEr'rs, Assienonroourrnn snon MAOHIN- ERY CORPORATION, OF nnrnnsen, nnwqnnsny, n conronn'rron on NEW JERSEY.

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Application filed AugiistlS, 1919, Serial Noam 8,086. Renewed Nbvemher 21, 1923.

To all 'whom it may concern:

Be it known that I, AN REW EPPLER, 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 Inseam-Sewing Machines; and I do hereby declare the following to be a full, clearfand exact tightened in sewing about pointedftoes than is practicable with the constructions heretotore in common use. 'To'this end a" mul} tiple step (preferably a two-step) feed s given to the shoe during each stitch forming cycle. With this form of feed the spread between the needle and the channel guide while the needle is in the work need be but approximately one-half the spread required by the usual single step feed, and consequently the shoe may be swung and'j manipin lated to better advantage and a'better dis-1' tribution' of the stitches'and a tighterseam be secured in sewing about pointed toes, as will be apparentto those familiar with the conditions obtaining in sewing about such toes.

The invention is shown in the accompany ing drawings in which Fig. 1 is a front elevation showing so much of an1inseam sewing machine as is necessary to illustrate the application of the preferred form of the invention thereto; Fig. 2 is a side elevation of the same and Figs. 3-8 are diagrammatic views indicating the mode of operation of the 'awl and channel guide in feeding the work. p

In the drawings the invention is shown embodied in a welt and turn sewing machine having the general construction of the machine shown and described in Patent No. 1,108,560, August 25, 1914. The machine is provided with a curved hook needle 2, a looper 4;, a thread arm 6, an awl 8, a channel guide 10, a back gage 12 '(which in sewing welt shoes is in the form of awelt guidef 'anda back resttl l, all of which are similar,

in construction to the corresponding parts in the machine of the patent referred to and all of which with the exception of the awl and channel guide are operated in the same manner.

patent toembody the present invention, the 'awl and channel guide are so mounted and I Nr o nce. f

In modi'tying the' machine of the above operated that they give two feeding move- :ments to the workbetween successive 'work plercing strokes of the needle, each of which is one-half the length otthe stitch being sewed' The maximum spread between the needle anchcliaiiiiel guide isthere'fore'but approximately one halfthe spread required for the same length of stitch with the prior single step" feed, thus permitting better 'dis- 'tribution of the stitches and thesewing of a tighter seam about pointed toes; In the.

7 construction shown theawl carrier segment 15 is mounted upon a j-teed slide 16, similar to the feed; slide of. the. patent above re ferred to andiinou nted to slide in'a similar manneruponfixed studs 18 and 20. -The awl segment is oscillated as in the machine,

of the' above patent through "a lever mounted 'on the slide and connected by I a link "24' with the awl' segment and by a pivot pin 26 with the, cam operated lever 28 The slide 16 is reciprocated in the line. of feed 'by-a teed cam groove formed in the cam disk 30 and engaging a roll 32 carv ried bythe slide. The channel guide is secured upon acarrier; lever 34 which is mount.-

" ed to rock and to slide in the direction of the teed upon a stud 36 secured in the feed slide v16. channel guide in and out by an arm 38 secured to a rockshaft a0 and provided at its lowerendtwitha tooth-engaging a tooth space on the endof the lever 34. The rock shaft 40 is'operatedflthrougha cam lever 42 secured toftlie shaft and provided at its rear The lever; 84: is rocked to move the end with a jroll'engaging laicam groove 44 in the-disk 30.]The lever giisreciprocated in thelinefof iieed'by a canilever 46 the forward end of which is provided with a tooth space engaged tooth on the hub of lever 3,4,[and the rear end of which is provided with aroll as engaging a cam groove in the disk 30.

The mode of operation in giving the work a multiple step feed during each stitchforming cycle is indicated diagrammatically in Figs. 38. Assuming that the needle has withdrawn from the work during its back stroke, the awl and channel guide will be in engagement with the work a halfstitch length from the last needle hole, as indicated in Fig. 3. As the needle completes its backward stroke the channel guide and awl move forward'in the direction of feed and advance the work a half-stitch lengtlnas indicated in Fig. 4. The awl then remains in engagement with the work while the channel guide is moved out and retracted or back fed and again moved'in to engage with the work, as indicated in Fig. 5. The awl is then moved out to disengage the work and retracted or back fed and then engaged with the work, as indicated in Fig. (3. The awl and channel guide then again advance in the direction of feed to advance the work a second half-stitch length, as indicated in Fig. 7. During this feed of the work the needle advances and as it enters the work the awl is retracted, the channel guide staying in while the needle completes its forward stroke and while the looper is acting. The channel guide is then moved out and the awl and channel guide back feed and the channel guide goes in, as indicated in Fig. 8. As the needle is retracted the awl is moved forward into engagement with thework, as indicated in Fig. 3, thus completing the cycle. The channel guide and awl thus gives the work two feeding steps of a half-stitch length each during each stitch-forming cycle with the resulting advantages above set forth.

While it is preferred to employ the specitic construction and arrangement of parts shown and described in embodying the invention in the machine of the patent re- :t'erred to, it will be understood that this construction and arrangement is not essential to the broader features of the invention and that it may be varied or modified as found desirable or best suited to the construction and mode of operation of the machine in which it is to be embodied.

What is claimed is:

1. An inseam sewing machine having, in combination, stitch-forming mechanism, devices for guiding and intermittently feeding the shoe, and mechanism for actuating thefeeding devices to give a multiple step feed to the shoe in each stitch-forming cycle.

2. An inseam sewing machine having, in combination, stitch-forming mechanism, devices for guiding and intermittently feeding the shoe, and mechanism for actuating the feeding devices to give a two-step feed to the shoe in each stitch-forming cycle.

combination, stitch-forming mechanism, a

channel guide, an awl, and mechanism for giving the awl and channel guide two halfstitch length feeding movements in each' stitch-forming cycle.

5. An inseam sewing machine having, in

combination, a needle, a channel guide, an

awl arranged to engage the channel, mechanism for moving the awl and channel guide together in the direction of the feed and for independently back-feeding them.

6. An inseam sewing machine having, in

a-wl, mechanism for giving the awl and channel guide twofeeding movements between successive work piercing strokes of the needle and for back-feeding them successively. after the first of the said feeding movements.

7. An inseam sewing, machine having, in combination, a needle, a channel guide, an awl, mechanism for giving the awl and channel guide two feeding movements be tween successive work piercing strokes of the needle and for back-feeding them after the second feeding movement while the needle is in the work and for back-feeding them successively between the two feeding movements.

8. An inseam sewing machine having, in combination, stitch-forming mechanism, a

combination, a needle, a channel guide, an

channel guide, and mechanism forv giving the channel guide two forward and return movements in the line of feed in each stitclr forming cycle. I

9. vAn inseam sewing machine having, in combination, stitch-forming mechanism, an

awl arranged to engage the channel and I mounted for movement in the line of feed, and a channel guide mounted for indepen dent movement in the line of feed.

10. An inseam sewing machine having, in

I combination, a needle, a channel guide, an

awl in advance of the channel guide, mechanism for advancing the awl and channel guide together in the direction of the feed a and for returning them independently.

11. An inseam sewing machine having, in combination, a needle, a channel guide, mechanisms for actuating the needle and channel guide timed to back feed the channel guide less than a stitch length while the needle is in the work.

ANDREW EPPLER.

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