US979451A - Sewing-machine. - Google Patents

Description

G. M. EAMES.

SEWING MACHINE.

APPLIUATION FILED DB0, 22, 190s.

. QDQ-ilf, Paiemed Dc. 27,15%@l I 5 SHEETS-SHEET l.A

` G; M. EAMES.

SEWING MACHINE.

PPLIUATIOH FILED DBO. 22, 1908.

979A@ e meme@ ma. 27, ma.

' 5 SHEETS-ERBE? 2.

w B1 Y ffm G. M. EAMES.

SEWING MACHINE.

APPLIGATION FILED DBG. 22. 190e.

Patented. Das. 27, 1910.

@i y WA n wh A m L' v- Ww y, :j Y 1:1: f Y@ i a N WIT/VESSEL? INVENTOR @agay/ @17u55 wmf G. M. EAMES. swme MACHINE. APPLICATION FILED 1320.22, 1908.

miente@ Dec. 2'?, ww.

5 SHEETS-SIRET 4.

I G. M. EAMES.

SEWING MACHINE.

APPLICATION FILED DBO. 22, 1908.

Patented Dec. 27, 1910 5 SHEETS-SHEET 5.

'Unici-ED srariisgiarnnr onirica.

GEORGE M. EAMES, OF BRIDGEPOET, CONNECTICUT, ASSIGNOR TO THE SINGER MANU- FACTURING COMPANY, A CORPORATION OE NEW JERSEY.

. SEWING-MACHINE.

Patented Deo. 27, 1910.

Application tiled December 22, 1908. .Serial No. 468,713.

To all whom, 'it may concern:

llc itkiiowii that. I, Grt-:onen lianes, a citizen of the United lStates, residing at Bridgeport, in the county of Fairtieldand State ot' Connecticut, have invented certain new and useful AImprovementsin. Sewingqh-lachines, of which the following is a specification, reference being had. therein to the accompanying drawings.

This invention relates to improvements in searing machines, and has for its object to control the'movements of certain parts of the. stitclij-forining mechanism and attlic saine time. si'ispend the feedof the material heing acted upon without iarresting the .ac-

tion ofthe entirestitch-forming and -clothfeeding mechanism. l

.lt-,has been common' in connection -with sewing machinesl operated by other than manual powerto employ a powfei transmitting device located between the inainor driving shaft of the sewing machine and the source of power, thus making it necessary to suspend the ii'iovement of all the operative parts comprisingthe stitch-forming and cloth-feeding mechanism when, for any pur-l pose, it is desired to discontinue the seam formation. Further, the use of the coniinonly employed transmitter in connection with-high speed sewing machines frequentlyY results in a disarrangenient of the coactingmembers and often causes the smaller connections to become bent or broken, due to .the shock of suddenly overcoming the excessive inertia incident to the operation of high speed machines. -J'

Referring to the accompanying drawings 'in the several figures of which like parts are similarly designated, Figure 1 is a 'plan view of a sewing in achi'ne equipped with my improved mechanism. Fig. 2 is arview in front side elevation, partially in -sec tion, to better illustrate the applicationof my invention. Fig; 3 is a. det-ail view of the needle-baicam sleeve. Fig. 4 is a detail View of a. portion of the needle-bar.l Fig. 5 is a View in perspective of the needlebar link collar. Fig. 6 is a viewin cross sectionA on the, lines G- -D, Figs. 1 and 2. Fig. 7 is a front end elevation of a sewing machine and' a port-ion of the work table, also showing the foot tre-adleand the connections for operatively connecting `.it with the machine. Fig. 8 `is a View, partially in cross section, illustrating the application of my invention to a sewing machine equipped with a cloth-feeding and .clothfeed-adjusting mechanism wherein the stepby-step feed movements are`prodnced by instead of by an eccentric adjustable relatively togthe axis of said shaft as in 'the construction of the application. Fig. 9 is a view, mainly in section, of the over- -an eccentric fast on the main driving shaft,

hanging arm of the sewing machine, show '65 'ing a modifiedforni of construction for suspending the needle actuation and controlling the movements of the feed-dov. Fig. 10 is a front end elevation of the overhanging view later to be referred to.

1 is the bed-plate of the sewing machine, 2 and 3 the front and back slide plates, respectively, 4 the throat-plate', 5 t-lie clotharm shown iii Fie. 9. Fig. 11 is a. detail 70- presser, 6 the cloth-presser bar, 7 the arm 75 standard, 8 the overhaiigiiig arm,9 the head `carried by said arm, and 10 the main shaft or 'needle-bar driver provided at one-end with the belt pulley l11 and carrying at its 'opposite end the flange 12. for operatively connecting the shaft 10 with 'the loop-'taker drivinglsliaft or carrier 14:

having at its forward end the loop-taker 15. The belt pulley 1G carried by the shaft 10A has pivoted to it by a screw 1G (shown in dotted lilies only, Fig. (i) an oscillating disk 17 which has formed integral with it ay feedcam or hub 1S. The adjustment of said disk and hub is controlled by a spring 19 which' yieldinglyv lioldssaid lmb'in a position concentric with the axis of the shaft 10, the tapered portion 2O of the feed-adjusting meni- 13 is a belt 80 ber 21 acting on the inner end of the screw l 22, in opposition to the resiliency of the spring 19, to position said hub eccentrically to the axis of said shaft, in the manner and for the purpose set forth. in United States Patent. No.;-7,18,988, 'dated January 27, 1903, to lV.- F. Dial et al., to which reference may 'be had, -wherein the `hub 18 is referred to as an eccentric 23 is a feed eccentric connection, the upper end lof which is operatively connected with, Y

the hub 18 by an eccentric strap 24, while it-s lower end is connected by an arm 25 witht-he feed rock-shaft 26 carrying the arm 27,'

, said arm in turn being pivotcd to fthe feeddog carrying bar28 providedwith the feedw I dog 29, thus connecting said hubl with said. `feed-dog. 1

lio

portion 48-l whic rides thesurface`of the ne e-bar -when said bar is at rest..` A springV 49 acts to resiliently hold'said plun 1 whic The feed-lift eccentric 30 is secured by and arm standard respectively. 'lhe shaft screw 31 'to the shaft 1 0 and is connected with the feed-lift rock-shaft 32 by the eccentric connection 33 and arm 34, the forward end'of said shaft b eing provided with an arm 35 carrying a'fslide block 36 which moves in the opening 37 formed in the feed-dogV carryingba-r 28,1Whereby the feed-dog 29is.

caused to be moved vertically into and outlof contact with the material being stitched.

38 is the needle-thread take-up, 39 the needle-bar 1i l connected at its upper endv by a. stud-"46 (shown in dotted lines only) with the flange 12, and 41 the needle-thread tension.'

Referring noW to the parts more directly connected with my improved mechanism, 42 is the needle-bar provided with a cam lug 42 and carrying the needle 43, said bar at its lower end being mounted. in- 'a tubular portion 44 which in turn is mounted t'o move vertically in the bushing 45 secured in the downwardly extended portion of the head'9. To the u per end of the tubular' ortion 44 mounted init a plunger 48 which is pointed? at one end and rovided with a concaved ger in .the direction of the needle-bar, the opf posite end of said sprin abutting against a. screw 50 threaded into t e opening 47. Thel plun er 48 is provided with a guide pin 49 enters a slot' 50 in the extended portion 47. A A

The upper end of the needle-bar 42 passes through the needle-bar `cam1sleev`e 51 which is threaded into the head 9, as shown at '52,- so as to oscillate therein, said sleevevbeingv l provided `with a cam portion 53, vertical slotis brought into operative relationship with `b hereinafter more fully'explained.

t The link 62 is connected fat one end, by

63 fast on the forward end of the prime member or shaft 64 of' th controlling mech` anisrn, said shaft being m'ounted to oscillate in Abearings65 and 66 formed on the rear side of the head of the oval-hanging arm -to hold said shaft against en dwise movement. 'The shaft'64 also carries acollar 74 in which one end of the spring 71 is mounted, the oppositeend of said' spring bearing against a hub 75 formed'on the overhanging arm, saidv spring being torsioned to hold `in their normal positions the several parts operatively connected with the oscillating shaft64.

The treadle lever-7 6 is secured by ascrew 77 to the shaft 64, and is connected by a rod '78. to'a foot treadle of ordinary construc- .tion', secured in the usual manner and capable of being'conveniently .manipulated by the operator. l

The o eration of my improved mechanism is as fol oWs:-Supposing, as represented-by the drawings, that the stitch formation and feed actuation have been suspended by 'brin ingthe' needle-bar to rest and adjustv'ing t e hub 18 to a lposition concentric with the axis of the shaft 10, all the other -elements being operative as-when forming a seam, andA it. is desired to resume the stitch formation, the operator by manipulating the foot treadlc causes the shaft 64 to be rocked in the direction indicatedwby the arrow s, while the connections 62, 51 and 42 cause the notch 61A to be brought into operative relationship with theplnngcr 48,' thereby giving tothe needle \6 its stitch-forming movements.A Atthe time that thenotch 61 the lunger 48, the incline 68 of the lever '67, t rough its'connection with the shaft 64,

consequently the action ofthe connections 62, 51, 42and the incline 68, thereby per'- mitting the spring 58 to position the needle bar as ,shown in Fig. -1, the spring returning the member 21 to the position .shown in thgsame figure.

i -While the -spring 71 is desirable, it is not essential to the practical operation of the machine, its function being simply to protect the shaft -(34: against accidental rocking movement in the direction indicated by' the arrow s, or in a direction to position the notch 61 in line with the plunger 48 and the bevel portion of the member` 21 in operative relationship .with the screw 22. Should the notch 61 be disconnected from engagement with the plunger 48 before the needlebar reaches its highest position, the spring 58 will force the lug 42 in contact with the calin portion 53 of the sleeve 51, and position =the needle-bar at its upward limit of stroke with the lug 42 in the slot 54, thereby holdz ing said bar against accidental operative eni gagement with the plunger 48 until it is again rotated through the oscillating movements of the shaft 64, it being'understood that when the needle-hars at rest andthe hub 18 is adjusted concentrically with the .axis of the 'shaft 10, the material 'being stitched is free to be removed from under the cloth-presser or adjusted as may be required.

From the nature of the construction it will be readily understood that the sleeve 51 and member 21 are subject tofadjustment at any .time during Athe stitch formation,- but should said sleeve be adjusted in` a direetion to disconnect the notch (il from the plunger 48 while the needle is in the inaterial, the needle-bar will remain .in its stitch-forming position, owing to the vplunger 48 being seated in the notch 61, `until the.- action of the cam portion 53 on the lug 42 forces the needle-bai' to follow the adjustment of said sleeve.

In the modified formof construction shown in Fig. 8, I have illustrated my in.- vention as applied to' a Sewing machine equipped with a feed-actuating mechanism wherein the extent of the step-by-step feed movements is controlled by the adjustment of suitably arranged levers, as pointed out. in United States Patent to Miller & Diehl, No. 229,629, dated July 6, 1880, for sewing machine, to'wliich 'reference maybe had. But instead of adjusting the fulcrum point d3 by manipulating the thumb-screw f' I connect said fulcrum point with-the shaft. 64 bya link 7'9 and arin 80, the latter being formed integral with;the le'ver 7G, thus efi fecting the adjustment of the fulrci'um point da by the oscillating movements of the shaft 64 in the same manner aild to the same extent as through the manipulaton of theI thumb-screw f2.

. i 7 f' i. In Figs. 9, 10 and 11A] have'showuiai modified form of. construction wherein the,

movements of the needle-bar andv feed-dog are governed by a rod 81 mounted. 1n the 'main driver 10, said rod being adjustable vin the direction of its length. 82-represents a flange secured by a screw 83 to thev shaft l0, said flange having pivotally mounted upon it, in the same manner as the disk 1T .is adjustably secured to the side of the pulley 1G, a disk 8l provided with a hul h3 corresponding to the hub .18, said hub S5 being controllei'l in its adjustment relatively to the. axis of the shaft 41U in the same manner'as is the. hub 18. A 'l`hus it will be seen that duplicate constructions' ot' like adjustment. have been provided for controlling the movements of'the feed-lift connection 33 and feed-(a-t-.entric connection 23.

Upon the forward end of the rod 8l is secured a spiral gear 8G which meshes with a segment of a spiral gear 8T secured to the arm 88 ot' the. crank 8S), said arm being mounted to tui-nin anopeniug 8b" formed in the flange 12. The crank 8S) is also provided with an oppositely arranged arm .)0 upon which is mounted in the usual manner the oppositeeiid ofsaid ,link being con-, nect'ed vithftl-,i'fi needle-barby the commonly' employ xdneei le-har collar 91. Threaded into'the rod 8l .isa'guide screw 92, the head of.w'liiclrlracls,iii a slot formed in.. the main driver. Sl and 95 arecomplemental notches, having like inclines 96 and t)'which are caused to act upon the respective screws 98 and 22 when the rod 81 is adjusted in a direct-ion to suspend the action of the needle-bar and feed-dog.

In the modified form of construction referred to, if the stitch-forming and clothfeeding'incchanisms are in operative relationship with the driving. mechanism and it is desired to suspend the stitch formation and feed actuation, the operator, through the treadle 78'-, connecting rod 78, lever Tt' and lshaft 64, moves theincline G8 of the lever 67 upward in opposition to the resiliency oi' the spring T0, thus forcing the rod 81 forward and at the saine time causing the hubs and 18, through the action of thel inclines 96 and 97 upon the respective screws 98 and 22, to be moved to a position concentric with thelaxis of the shaft 10. thus bringing thefeed-dogl to rest; and at `the sainel time. the spiral gear 86 acts upon the segment- 87 and positions the crank 89 as shown in full lines` Fig. 10, with the axis of the arm' tl() in line with the axis of. the shaft 10.`

'It is to be uni'lerstood thatin the construetioii represented by Figs. t), l() and 11, the. parts shown in the, otheriigures for connect'.-v ing the roclc-sliaft'Gt with theneiallefbar have been dispensed with.

. What I'elaim is:-

1. In a sewing machine, the combination of stitch-forming mechanism including a .needle-bar, an actuating mechanism therefor and an adjustable' connect ion for determining the act'io'n and inaction of said needlebar relatively to its actuating mechanism; cloth-feeding mechanism including adjust# I the commonlyemploycd needle-bar link $59,".

able coacting members for determining the action and inaction of the feeding mechanism relatively to its cloth-feeding movements; and controlling mechanism comv prising a prime member operatively connected with the needle-har and the clothfeeding mechanism for determining the aforesaid actions and inactions of the needle-` bar and feeding mechanisms, the adjust- .10 ment of said prime member determining the time and extent of the scam formation, substantially as described.

2. In a sewing machine, the combination of stitch-forming mechanism comprising a needle-bar, a main driver, and connections for operatively connecting said needle-bar' tion and .inaction of said feed-dog rela-v tively to its feed movements; andl controlling mechanism comprising a prime member operatively connected with boththeneedle- -bar and cloth-feeding mechanisms, the adjustment of said prime member determining the'time and extent of seam formation, substantially as described,

i 3. In a sewing machine, the combination,

of an actuating shaft, needle actuating and feedactuating members upon said, shaft, stitch-forming members including a needle `operatively connected with the needle actu- 40 ating member of said shaft, and feeding mechanism operatively connected with said feed-actuating member, and 'controlling means acting simultaneously upon said stitch-forming and feeding mechanism op- .l erated independently ofsaid shaft whereby the stitch-formation andV feed are simultane-I ously suspended without arresting` the movement o`f said shaft. VA,

4. A sewing machine comprising a inaindriver, a needle-bar, connections for operatively connecting said bar with said driver A including coacting members adjustable int-o and out f power transmittingrelationship with each other, a feeding mechanism and a stitch-forming andffee'd-ntrlling mechanism; said feeding' mechanism comprising a feed-cam, a feed-dog and connections for operatively-connecting .saidcam With said dog including a feed rock-shaft' adjustable into 'and out of-driving relationship'with. said main-driver; and s aid controllmg mech-,

. anism comprising a prune in ember for'controlling' the action 'and inaction of both the needle-bar and the feeding mechanlsmgl'zthe adjustment ofv said primemember thus determining the extent of the seam formation. 5. A sewlng machine comprising a mam driver, a needle-bar, connections for operatively connecting said bar with said driver including coacting' parts adjustable into and out of power transmitting relationship With each other, a loop-taker, a loop-taker carrier operated from said driver, a feed-cam carried by said driver, and adjustable in a direction transverse to the airisV of said driver, a feed; dog operatively connected with .said feedcam, a rocksha`ft operativel i connected with both the needle-bar and the eed-cam, the adjustment of said rock-shaft in one direction causing the needle-bar to vbe rest and the axis of said cam to positioned in line with the axis of said main driver,.thus discontinuing the stitch-formation and feed actuationduring the continued operation of the main driver, substantially as,described.

6: A sewin machine -comprisin a maindriver, a nee lebar, connect-ions or operatively connecting said bar with said driver ositioned at' including coacting members adjust-able into land out of -power-transmittin relationship with each other, a feeding mec anism and a stitch-forming and cloth-feed controlling mechanism said feeding mechanism including adjustable coacting members for vdetermining the actionand inaction of the .feed ing mechanism relatively toits cloth-feeding movements; said vcontrolling mechanism comprising a prime member ocperatively connected with the needle-bar an cloth-feedin mechanisms for determining the aforesai actions and inactions of the needle-bar' and feeding mechanisms, the adjustment, of said p prime member determining the time and extent of the seam formation.

7. A sewing machine comprising a needlecarrying bar, means for operating Vsaid bar includin a main driver and cacting parts A adjustab e into and out, of power transmits, ting relationship with each other during the stitch-formingmovements of`sa1d driver'; a

feed-dog and means for operatin it including a feed-cam; a loop-taker an means for operating it including a loo taker carrier;

stitch forming" and 'clotheed controlling mechanism including a prime member.op eratively connectedwith .both the needle-bar and feed-cam, the connections for connecting said prime member with SaidneedIe-bar in-' Y cludng ajcam lsleeve mounted inthe head .off

the overhanging arm,l anda c oactin cam lug. carried b the 'needle-bar, 'the sai ,oone c tions inc udmg an ',ar'm,l carried l.by said 4prime member and a feed-a`djustingmem vber,'substantially as described.

A 8. A sewing machine comprising a needlecarrying bar, means for operating said lbar including a main driver and coac'tingparts which are adjust-ableinto and out-lof power 15 ing a sleevel provided with n cmn portion transmitting; relationship with each other l duringl tl e xtitch-'l'orming movements of Suid driver, one ot ,sind conctin` parts being` provided with :i wedge shaped end having :i concave port-ion tor coflctingr witlrsaid needle-bnr when Said bar is :it rest; n feed-dog and means for ope ating it including n 'leedcinn; i1 loop-taker und means tor operntinf it including a loop-taker carrier; and Stitchforming and cloth-feed controlling mechanism includingl n prime member operatively connected with both the needle-bnr and feed- Cum, the connections for connectingr said prime member with said needle-bur includwhicl .in connection with a lng carried by the needle-bar :iets to suspend the stitchlorming movements of the needle, the conf neetions for connecting Said prime member` with said feed-cam including an arm, earried b v said prime memberE und :t feed-:nljnStine membersnl'tnntinlly asdeseribed.

In teStimony whereof, l have Signed my name to thisI :specification` in thel 'preSenee otl two subscribing witneSSes.

GEORGE M. EAM ICS.

Wi t neSses:

Annu; M. DoNlIncn, (Ynonon il. Continu.

Images