US1172911A - Sewing-machine. - Google Patents

Description

' 01s. SEYMOUR.

s wme MACHINE. APPLICATION FILED' NOV. 5, I910- Patented Feb. 22,1916.

a SHEETS-SHEET 1.

. ii n v I b {7n mentor ill . anaemia Ira S. sermons, or CHICAGO, ILLINOIS, Assrcavon TQUNION SPECIAL Macrame coMrnNY, or CHICAGO, rumors, A conronarron or ILLINOIS.

SEWING-MACHINE.

Specificati ters Patent. 7 Patented Feb 22, 1916.

Application filed November 5, 1910. Serial No. 590,915.

To all whom it may concern;

Be it known that I, DUDL Y S. SEYMOUR, a citizen of the United States,.residing.at Ghicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Sewing-Machines, of which the following is a description, ref

erence being had to the accompanying drawing and to the letters and figures of reference marked thereon.

.The invention relates to new and useful improvements in sewing machines, and more especially to sewing machines having 2. ey lindrical bed plate orwork-supporting longitudinally of which the goods are fed during the stitching operation.

An object of the invention is. to provide a machine with anunusuallv' long overhanging arm and work-supporting arm, in order to increase the capacity of the machine. v

A further object of the invention is to provide an improved arrangement of looperoperating mechanism and feed-operating mechanism which may be packed in a very illustrationone embodiment of the invention,Figure 1 is a sec'tional view taken longitudinally through the machine; Fig. 2 is a view partly in section and partly in plan, showing the looper and feed-operating mechanisms; Fig. 3 is a vertical section through the standard; Fig. 1 is a detail view showing the means for raising and lowering the feed bar; andFig. 5 is an end view of the cylindrical work support and showing the position of the looper therein.

The machine as herein shown consists of a bed plate 1, in which rises a standard 2 carrying a very long overhanging arm 3 having the usual needle head 4: at the forward end thereof. The main shaft 5 is mounted to rotate in the overhanging arm,

and is operated by the combined belt and hand wheel 6. The. needle bar 7 reclprocates in a needle head and carrles a needle "thread controller 11.

or needles 8. The needle bar is connected bar 10, mounted at the forward end of the overhangin arm. A thread controller 11 is connected by a link 12 to a rock shaft 13,

.which in turn is connected to the presscr bar so as to vary the position of the thread controller for varying thicknesses of fabric. The needle thread is led through the tension device 14; then through the eye 15 to the thread guide 16 on the outer'end of the The needle thread then passes to athread guide 17 on the upper end ofthe needle bar. and through a thread clip 18 to the eye of'the needle.

The parts above described are not claimed herein, and further details and description thereof are not thought necessary.

The work-supporting "arm or. bed plate 19 I is-attached to the standard 2, and projects.

in a direction parallel to the overhanging arm. The feed dog 20 cooperating with the presserfoot 9, is arranged so as to feed the material along the work-supporting arm and in a direction underneath the overhanging arm. Said feed dog 20 is rigidly attached to a feed bar'Ql. This feed bar at its forward end reciprocates back and forth in the supporting bearing of the work support, which prevents said. feed bar from moving laterally. A looper 22 is carried by the forwardend ofa looper shaft 23,

which is mountedto oscillate in hearings in the work-supporting arm. The looper 1s so v mounted as to move in av direction at right angles to the line of feed, and a slngle looper cooperates with both needles, if two needles are used. The. looper-supporting on the main shaft 5. rotates, the looper shaft will be oscillated, and the looper moved. back and forth into and out of the needle loop.

The looper is moved laterally to give the same a needle-avoiding movement by means of a sleeve 27, Which is freely mounted on the looper-supportingshaft 23 between the Thelink 25 at the upper end cooperates with an eccentric 26 mounted As the mam .shaft p collars 28and 2 9, which are'rigidly' secured to the looper-supporting shaft. The sleeve '27 carries a depending arm 30, which rests between guides on a bracket 3L'mounted on the work-supporting arm. These guides allow the sleeve to move longitudinally, but' rock shaft 34. The rock shaft 34carries also an arm 35 having a ball stud which en'- gages a link 36, which in turn cooperates with an ec'centric'37 on the main shaft 5. As the main shaft rotates, the rock shaft 34 will be oscillated, and throughthe link 32 and arm ,the'looper-supporting shaft will be moved endwise. A third arm 38 is carried by the rock shaft :34, and will vibrate with said rock shaft. Said arm 38 is provided' with a vertically extending member 39, which is formed with a curved slot. A link 40 is pivoted at 41 to the end the feedbar 21, and said link at its other end is connected to a ball stud adjustably se cured in the curved slot in the member '39.

The feed bar 21 at the opposite end from its feed dog slides on a flat pin 42, which fiat pin is mounted to turn freely in bearings in the work support. The feed bar is formed with an elongated slot 43, which engages'the fiat pin 42, and this slot allows the feed barto be moved endwise,-and the pivotal support for the pin allows the feed dogto be moved up and down. As'the rock shaft 34 is oscillated, the member '39 will be vibrated, and through the link 40 the feed bar will be moved back and forth in the work-supporting arm.

The feed .bar is raised and lowered by an eccentric 44, which is secured to the loopersupporting shaft. 23. Said eccentric engages a sleeve 45, which 'is carried by'trunnions 46, freely mounted in a. yoke 47, which is rigidly secured to the feed bar 21' The eccentric 44 is so. constructed that said'e'ccen tr ic may slide back'and forth in the sleeve 45. This allows for the endwlse movement.

' through the eccentric 44 raise andlower the yoke 47, and in turn raise and .lower the feed dog by swinging the feed bar and the flat pin 42 in its pivotal support. The trunnion connection between the sleeve '45 and the yoke 47 allows for the rigid connection between the .yoke and the feed bar and the swinging of the feed bar about the pin 42 as a center. It will thus be seen that I have provided a means for raising and lowering the'feed bar, which is positive in its action and which is located adjacent the feed dog, so that the weight of the vibrated parts is comparatively small. It will also be noted that I'have provided only two operating eccentrics o'n'the main shaft, on'e'of which gives one movement to the feed dog and one movement to the looper, whilethe other gives the other movement to the feed dog and the other movement to the looper.

Another feature of my invention is the location of the looper shaft relative to the cylindrical work support It is desirable to -make the cylindrical w'ork support as small as possible and still operate'prop'erly the looper. \Vhen the work support is "reduced in size, the looper must, also be reduced. and cause to move in a circular path having a short radius.

I have found that by mounting the axis of the looper shaft below the'lOngitudinaI axis of the cylindrical 'work support, so that the path of the looper is eccentric to the work support, va relatively large circular path of travel may be given tothe looper,.'and the size of the cylindrical work support relatively decreased.

In Fig. 5 I have shown the work support 19 in end elevation. The looper shaft is indicated in dotted-lines as having its axis below the longitudinal axis of the worksupport. which is indicated at 0. The path It will be obvious that minor changes in the details of construction may be made without departing from the spirit of my invention.

Having thus described my invention, what I claim as new and desiretosecure by Letters Patent, is

1. The combination of a thread-manipulating device mounted to move back and forth and la'terally,'a fabric-manipulating device mounted to move back andforth and up and down, a shaft, an eccentric member operated by said shaft, means operated by said eccentric member for giving said thread-manipulating device one of its movements, and said fabric-manipulating device one of its movements! a second"eccentric member operated by said shaft, and means operated by said second eccentric member for giving the thread-manipulating device its other movement and the fabric-manipulating device its other movement.

7 The combination of a looper mounted to move back and forth and laterally, a feed (log mounted to move up and down and back and forth, a shaft, an eccentric member operated by said shaft, means operated by said eccentric member forgiving each said looper andrlsaidfeed dog one of their movements, a second eccentric member operated.

"by saids'haft, and means operated by said eccentric ni'ember forgiving the looper and the feed fdog the' 'other movements;

" ion of a looper, a loopermeans connected to said rock shaft for movmg the feed bar back and' forth, and means connected to said rock shaft for moving the looper shaft endwise;

4. The combination of a looper, a loopersupporting shaft, a. feed dog, a feed bar supporting the same, an operating shaft, an.

eccentric. member carried thereby, a rock shaft operated by said eccentric member, a slotted arm carried by said rock shaft, a link adjustably connecting said slotted arm to said feed bar, and means for moving the looper shaft endwise from said rock shaft. 4

5. The combination of a looper, a loopersupporting shaft, a feed dog, a feed bar supporting the same, an' operating shaft, an eccentric member carried thereby, a rock shaft operated by said eccentric member, a

' slotted arm carried by said rock shaft, a

second eccentric mounted on the main shaft,

and means operated by said last named ecicentric for moving the looper shaft endwise and for giving a feed bar. I

7. The combination of a looper, a loopersupporting shaft, a feed dog, a feed bar carrying said feed dog, said feed bar extending longitudinally of saidlooper-supporting shaft, means for movingthe looper-supporting shaft endwise and forgiving to the feed bar a feeding movement, means for oscillating the loo e1: shaft, an eccentric member feeding movement to the carried by said looper-supporting shaft 'adjacent the forward end thereof, a sleeve cooperating with said eccentric, a yoke at tached to the feed bar, and means for pivotally connecting said sleeve to said yoke.

8. The combination of a cylindrical bed plate, of a feed bar extending longitudinally thereof, a feed dog carried thereby, a pivot pin .on which said feed bar is slidingly said eccentric member, a yoke connected to feed bar up and down from said l doperieluding a sleeve freely mounted on said looper shaft between which said sleeve is mounted, meansifor moving said feed bar back and forth,'"f. a looper supporting shaft, an eccentric member operated by said loopersupporting shaftfa .sleeve cooperating with the feed bar adjacent the feed dog, and means for,-.pivotally connecting said sleeve to saidyoke. l

9. The combination of a cylindrical bed plate, of afeed-. -bar extending longitudinally thereof, a feed'f-"dog carriedthereby, a pivot pin to whichfone end of said feed bar is slidingly connected, a'link connected to the end of the feed bar for reciprocating the same, a looper shaft mounted below said feed bar, an eccentric member carried bythe looper shaft, a sleeve engaging said eccentric member and sliding longitudinally thereon, a yoke attached. to said feed bar intermediate its ends, trunnions carried by said sleeve and engaging bearings in said yoke.

10. The combination of a cylindrical bed plate, of a looper-supporting shaft mounted therein, spaced collars carried by said loop 1' shaft, a feed bar extending longitudinalfy of the bed plate, means for operating said feed bar up and down from said loopersupporting shaft, means for oscillating said looper-supporting shaft, means'for moving said looper-supporting shaft endwise ineluding a sleeve freely mounted on said looper-supporting shaft and located between the collars fixed on said looper-supporting a shaft.

ll. The combination of a cylindrical bed plate, a looper-supporting shaft mounted therein, spaced collars carried by said looper shaft, a feed bar extending longitudinally' of the bed plate, means for operatin i id supporting shaft, means for oscillating' sa'id looper-supporting shaft, means for moving said looper-supporting shaft endwise, in-

looper-supporting shaft and located between the collars fixed on said looper-supporting shaft, anarm attached to said sleeve, a guide ing bracket for guiding said arm, and link connected. to said arm for moving sa looper shaft endwise.

12. The combination of a looper, a loopersupporting shaft, means for oscillating said shaft, means for moving said shaft endwise, including a sleeve, spaced collars on the looper shaft between which said sleeve is freely mounted, means connected to "said sleeve for moving the looper shaft longitudinally, and means'for preventing the sleeve from turningwith the looper shaft.

13. The combination of a looper, a looper supporting shaft, means for oscillating said shaft, means for moving said shaft endwise including 'a sleeve, spaced collars on the no I freely mounted, means connected to said In testimony whereof I afiix my signature, sleeve for moving the looper shaft longitudiin presence of two Witnesses. nally said sleeve havin 21 depending portion darried thereby, and a fixed-member for DUDLEY SEYMOUR 5 engaging said depending portion for pre- Witnesses:

venting the sleeve from turning with the C.MCNE1L,

looper-supporting shaft. -14. B. CLOTHIER.

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