US1153429A - Sewing-machine. - Google Patents

Description

P. HLEB.

SEWING MACHINE.

MPL10/umu FILED ocnzx www am. 14, 1915.

' rain riErE.

PETER HLEB, ory ELIZABETH, NEW JERSEY. AssIGNoR To THE 'SINGER MANUFAC- TUBING COMPANY, A CORPORATION-OF NEWJJERSEY.

SEWING-MACHINE.

Specification of Letters Patent.

Patented Sept. 14,1915.

Application filed October 21, 1,914. Serial No. 8674.704.

To alla/imm it may conce/1% 4 Be it known that l, Pi-:Tiii: HLEB, a citizen of the United States, residing at Elizabeth', in the county of Union and State of New Jersey,l have invented certain new and useful Improven'ients in Sewing-lilachnes, of which the followingfis a specification, reference being had therein tothe accompanying drawings.

This invention relates more particularly to an improvement in operating means for -stitcliforining mechanism involving a rotary shaft carrying oneof the stitcli-forming i elements `and performing lateral jogging movements in its coperation with a reciprocating needle; and it has for its object the provision of a construction in which efficient and substantial driving means may be em which shall be nnaiiected'hy said' ployed jogging movements.

Inth'e preferred form of the improvement the loop-taker shaft is formed in separate sections arranged end--to-end, one of the sections licing n'iountled for movement upon a fixed axis and having the actuating means vconnectcC thereto, while the other section carrying` he loop-taker is journaled at one end in a bearing liloclchavingi a fulcruin vwhose'axis `is disposed transverse to and is directed -intermediate the adjacent ends'of said sections which are'connected together for rotation` in unison by a universal coupling, means being applied to the loop-taker carrying section whereby it performs jogging movements in conjunction with its turning movements, as described more fully inztlie pending application of Albert F. Fi-

field, Serial No. 828,663, filed April 1, 19.14.`

and permits the accurate formation of the intern'ieshing gears so as to insure against excessive noise and undue wear at the high speeds vat which this class of machines is designed'to be driven `iii the production of groups of overseain sti'trhcs for attaching buttons to garments and for other purposes.y

In .the accompanying drawings, Figure l is a side elevation, partly in section, and Fig. 2 a bottom plan, vi'cw of a sewing machineI embodying the present improvement. Figs. 3, 4. and o are perspective views representing 'transversely slotted collars applied to the adjacent endsof the loop-taker shaftsections and an intermediate'block in the form of a disk or washer having transverse tongues upon its opposite faces. Pig. 6, is'a perspective view of the sliding forward shaft-bearing. l `ig. 7 is an elevation of the pivoted bearing block for the loop-taker sha ftesection and the hanger upon which thel same is fulcrumed, and Fig. 8 is a perspective view of said hearing block.

The inachineframe is formed with the usual bed-plate 1 and overhanging bracketarm 2 in which latter is journaled the main or dri ving shaft 3 carrying the fast and loose belt-pulleys l and .Connected with the main-shaft by usual or suitable means is the reciprocating needle-bar (l carrying the 'eyepointed needle 7v cooperating with the looper 8 in the production ofsingle-chain overseam stitches, as illustrated herein.

The looper-shaft is disposed beneath the bed-plate and is formed in two sections 9 and 10 arranged end-to-end, the latter having fixed upon its forward extremity the louper 8. These shaft-sections have secured upon their adjacent ends by means of setscrews 11 the collars 12 and 13 provided upon thei adjacent faces with the diametrical grooves or slots 14. rl`he collars 12 and 13 have interposed between them the circular block or washer 15 formed upon its opposite faces with the diametrical tongues or ribs 1-(3 and 17 arranged crosswise of each other and entering the grooves l of the blocks 12 and '13, respectively. 15 thus affords-a universal coupling element between the transversely slotted adjacent ends ot' the shaft-sections, or collars 12 and 125 thereon, which-latter permit the movenient of the secondary loopcr-carrying sec- The block 'tion 10 out of alinement with the primary section 9 without disturbing their operative relation, the lateral inclination of the section .10 being permitted by the -free working of the coupling block 15 disposed in the plane of such inclination within its respective slot 14, While the other tongue of the coupling block serves in conjunction there- @Witli to prevent its lateral displacement rela tively tothe shaft, as will betwreadily under stood. It is of course unesselitial that separate collars 12 and 1 3 be applied to the shaft sections to receive the interlocking tongues and slots 17 and 1l, respectively, the function of the loose connections thus formed being merely torcouple the shaft sections together in such manner as to allow their relative free lateral movement.

The primary shaft-section 9 is 'journaled within a suitable bearing therefor formed in the depending lug 18 of the bed-plate, and has fixed upon its rearward end the bevelpinion 19 meshing with the similar pinion 20 upon the lower end of the upright shaft 21 extending upwardly through the hollow bracket'arm standard and having fixed upon its upper end the bevel-pinion 22 meshing in turn with the pinion Q3 iixed upon the mainshaft 3. The rotarv movement ot' the sectional looper-shaft is thus derived from-the main-shaft through bevel gearing which may be maintained in ixed relation under all conditions without impairment of any of its elements by reason of the lateral movements communicated from the lower shaft to the looper.

Secured to the bottom of the bed-plate' by screws 2l is the depending yoke 25 straddling the looper-shaft and formed with ay bearing boss 26 having its axis transverse to 'and passing intermediate the adjacent'ends of the shaft sections and in substantially inteisectingr relation with the axes of said sections. Fitted within the bore of said boss is the depending fulerum-stud 27 of a bearing block 28 formed with parallel shaftapertures 29 and 30, as represented particularly in Fig. 8, the former a Wording a pivoted bearing `for the shaft-section 10 which is confined against endwise movement therein by the collar 12 at one end and ay second collar 3l. at the other end secured in position by a set-screw. The fnlcrum-stud 27 is confined in )osition in its bearing boss b means b of the screw 32 tapped into the same with its head partially overlying the lower end of the bearing boss.

The forward portion of the shaft-section 10'adjacent the looper is journaled in a bearin'g aperture 33 of the slide-block 34 which is fitted within a transverse slide-way pro.

vided in a cross member 1 depending from the bed-plate in which it is confined by means of the strap secured in position by screws 36 substantially as represented in the -in` the bed-plate.

said pendin application. The forward portion ot t e shaft 1s thus sustained for .s1dew1se movement 1n conpmction with the Arotary movements derived from the mainshaft through the described connections.

The shaft-section 10 has fixed thereon near the slide-block 34, the eccentric 37 embraced by the. strap 38 at one endof the connecting rod 39 whose apertured opposite endembraces the stud-pin l0 secured by mea-ns of theset-serew 41 within an aperture in' the bed-plate cross-member 1. As the strap' 38 embracing the actuating eccentric 37 1s maintained a fixed distance from the stationary stud-pin 40 by the connecting rod, each rotation of the shaft obviously produces a lateral jogging movement of the latter with its bearing slide-block 34, the swivelcd bearing block 28 permitting the free horizontal vibratory movement of the shaft upon the stud Q7 as a fulcrum. i

rl`he slide-block 3l is formediin onette'fd with a depending lug 42 carrying the overi hanging bearing boss 43 formed with thel supporting plate 48 above which is sustained the upper work-clamping member 49 Y by means of theI sprang-pressed arm 50 secured upon the block 51 which is--mountcd upon the rearward end of the bar 47. The bar 47 is connected by suitable means intermediate its ends with thc slide-plate 52 beneath the bed-plate -having a link connection 53 with onearm 54 of a bellcrank fulcrumed at 55 and provided with a slotted arm 56 which is connected in turn by means of the linkelement 57 with the lower arm 58 of a rocklever depending through a suitable aperture Said rock-lever carries np'on its upper arm a roller-stud enterin an actuating cam-groove in the control ing cam-wheel 59 which is in practice suitably:

connected with the main-shaft for imparting to the work-clamp jogging movements crosswiseof the bed-plateand hence in 4the plane of the rotary movement of the looper.

'lhe bar 4.7 has upon its rearward end the upright post 60 entering. a block 61 fitted within the laterally channeled arm-62 of e rock-lever haying upon its upper arm 63 the roller 64 entering a suitable groove inthe4 cani-wheel 59. When the block 61 is'adjacent the fulcrum of the rock-leverV 62 63,the

therefore be seen thatthe preferable', other connect the shaft sections,

arsenaapost 6() affords a fnlcrum upon .which the sidewise movements of the {Work-holder are ,performed A,

The' machine, as thus described, operates substantiallyinthe manner described in the pendingapplication Serial "l lo. 828,663, before "hie'ntioncd. In the operation of the stitch-formingmechanism, the looper performs arotation foreach reciprocation of the needle. and jogging movements of the same frequency to compensate for the alternate lateral shifting movements of the work with the work-holder to-insure the proper coperation of the needle and looper in each positionof the work-holder.

It is-evidently immaterial tothe present improvement in connection with, what type of stitchforn'iing mechanism it is employed, and whether the loop-taker shaft are continuous or oscillatory. 'Itis evident that, While the form universal coupling shown and described is forms may be employed to and that the form of coupling herein represented does not equire the' employment of collars 12 and 13 separate from the shaft sections. It` will present improvement is not limited to the particular construction and arrangement of .parts shown and described herein, but may be considerably varied without-departure from the scope of the'invention.

Having thus'set forth the nature of the invention, what I claim herein ist- 1.111 a sewing machine, in' combination,

a reciprocating needle, a shaft formed lin 'separate sections arranged end-to-end, turning means for one of said sections, a bearing for the other of said sections-having a fulcrum with lits axis transverse to and passing intermediate the adjacent ends of said sections, meansfor imparting to. the secondnamed section lateral 'jogging movements upon said fulcrum, a universal coupling intermediate the adjacent ends ofsaid sections, and a loop-taker 4mounted upon the second-named section of said shaft for cooperation with said needle.

2.- In a sewing machine, in combination, a reciprocating' needle.I a shaft formed in separate primary and secondary sections arranged end-to-end, turning means for the primary section. a bearing for the secondary section having a fulcrum with its axis transverse to and disposed in substantially in 3. In a sewing machine, in combination, y

rotary movements of the' (if Afor the other of said coupling intermediate,

a reciprocating needle, a shaft formed in adjacent ends of said with transverse pivseparate sections arranged end-to-end, turn! a coupling block disi separate sections arranged end-to-end, turning means for one of sections having a fulcrum with its axis transverse to and passing intermediate the adjacent ends of said sections, name section lateral upon said fulcrum, a posed intermediate the adjacent ends of said sections with which it' has transverse tongue-and-slot connections each disposed transversely of the other, and a loop-taker mounted upon the second-named section of said shaft for coperation with said needle.

5. '1n a sewing machine, in combination, a reciprocating needle, a shaft formed in separate sections arranged end-to-end and provided at their adjacent extremities each with'a diametrical slot, turning;r means for one of said sections, a hearing for the'other of said sectipns having a fu1crum\\vith its axis transversetotand disposed in substantially intersectimgr relation with the axes of said sections', means for in'iparting tosaid second named section lateral jogging movements upon said fulcrum, a coupling block interposed between the ends of said sections and provided upon its opposite faces with transverse tongues each disposed crsswise of the other and entering the transverse slot of the' adjacent shaft section, and a looptaker mounted upon 'the second-named section of said shaft for coperation with said needle.

6. In a sewing machine', a reciprocating needle, a work-lloldeigmeans for producing relative jogging movements between said' needle and Work-holder, a rotary shaft comprising separate primary and secondary sections arranged end-to-end, a fixed bearingin -which the primary shaft jogging movements coupling block dlssection is j-ournalcd, actuating means for.

said sections. a'hearing- .means for imparting to the secondin combination, i

secondary shaft section and oopernting with the needle in the production of Stitches,

means for imparting to the secondary seo-v tion lateziil jogging movements upon said ulei'um, and :i universal. couplingintei'mediute the adjacent ends of Said Section5.

7. ln a sewing humhine, the combination 'with the frame comprising u lied-plate und f1 bracket-erin including a hollow Standard and :in overlianging tubulin' portion, of e -main-shaft journaled in the bracket-arm, n loop-taker Shaft formeel in separato primary and secondary sections arfanged end-to-end und disposed beneath the leed-plinios a fixed bearing beneath the bed-plate for the primary Shaft section, :L driving connection embraced 'by said standard between the main-shaft and said shaft section, a hanger rigidly connected with and depending from the`bed-plote and hailing a bearing boss with its axis transverse to and passing 1n- Atermedmte the adjacent ends of said slec-

Images