US925320A - Sewing-machine. - Google Patents

Description

L.' F. FALES.

SEWING MACHINE. APPLICATION rum) MAR.5,-1908.

925,320. Patented June 15, 1909.

8 SHEETS-SHEET l.

L. F. FALES. SEWING MACHINE. APPLICATION FILED MAR. 5, 1 908 .8 mm J 5 mm M an e, m mm 11% K m P 5% p v.

L. F. FALES. SEWING MACHINE.

APPLICATION FILED MAB. 5, 1908.

9 5 32 Patente d June 15,1909;

3 SHEETS-SHEET 3.

LEWES F. FALES, 0F WALPOLE, MASSACHUSETTS.

SEW ING-MAGHH FE To all whom it may concern:

Be it known that I, LEWIS F. FALns, a citizen of the United States, residing in Walpole, in the county of Norfolk and State of Massachusetts, have. invented an Improvement in Sewing-Machines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

The present invention relates to a sewing machine, and is embodied in what is known as a double-looped stitch machine, (the Grover and Baker) the invention being particularly adapted to a machine of this type provided with multiple needles for sewing a number of rows of stitches at the same.

time.

In a machine of the Grover and Baker type, a hook oscillating on a vertical axis is utilized, the said hook encircling the needle in the formation of the stitch, and it is necessary that the inner periphery of the said hook should be in substantially the same position with relation to .the needle during both the up and down strokes of the latter in the formation of the stitch. F urthermore, it is desirable, especially in a multiple needle machine, where a large amount of material ,is being handled, to utilize a continuous feed, in which case the needle must be moved laterally during the formation of the stitch. Consequently, a lateral movement of the hook, corresponding to that of the needle, must be provided for, in order that the point of the hook may pass close to the side of the needle in both the up and down strokes thereof.

In accordance with the invention, the needle bar or needle bars, each of'which may be provided with more than one needle, if necessary or desirable, is vertically movable in a pivotally supported bearing and operated by an eccentric, so that both reciprocating and rocking movements are produced, the reciprocating movement causing the formation of the stitch, while the rock' ing movement provides for the lateral movement of the needle to follow the material as it is fed along. The oscillating hook which cooperates with the needle in the formation of the stitch is also arranged to move lat erally with the lateral movement ot the needle, the said hook being capable ofrotalien or oscillation in bearings formed in a Specification of Letters Patent.

Application filed march'o, 1908.

.Patonted June 1-55, 1%69.

Serial. 1*! 0. 419,262.

pivotally supported member below the vvorle. supporting plate and provided with suitable actuating mecnanisins'; The hook membenis so arranged with relation to its actuating mechanism that it can be tipped torwar... from under the bed-plate, in order render it accessible for threading, or other phiposes. v

Figure 1 is a front elevation of a sn'ffieient portion 01 a sewing machine to illustrate the invention; Fig.2 is a side elevation, partly broken away, looking toward the left of Fig. 1; Fig. 3 is a vertical section, on an enlarged scale, taken on line 0 of Fig. l; and Fig. 4 is a horizontal section, on line'w of Fig. 3; and Fig. 5 is an enlarged perspective view of one of the fastening studs for the hook members.

The needle bars a, ct which there may be any number desired, are shown as each' pro vided with three needles a ,-it being imma- 'lerial, of course, exceptas a matter 01!. con

venienee, how many needles are carried by, The needles a cooperate in the each bar. formation of: the stitch with the oscillating hooks a, each of which is shown as rotatably mounted in vertical bearings l)? in a pivoted holder b the said holder being shown as having a rearwardly projecting arm 5 pivoted at A in a portion of the frame A.

The vertical movement of the needle bars a to perforate the n'iaterial and form the stitches therein is provided for by means of eccentrics B mounted on the main driving shaft B,- and, in order that the needle may travel with the material in the feed movement thereof, the arrangennant is such that the needle, while perforating the material, will move laterally, as vcell as longitudinally, during the formation of the stitch. For this purpose, the needle bar is provided with abearing in a member c which is pivotally supported at 0 on the frame of the machine, the eccentric being so adjusted and arwnigod as to cause a lateral i'mivenient at the upper end of the needle bar, as well as the longitudinal moveu'ient I already described. The relation between the pivotal. support of the member (1 in which the needle bar bears and the axis of the eccentric is such that, in the movement of the eccentric, the member 0 will be oscillal ed in its hearing, so that a lateral, as well as a longiiiulinal moi-'ement of the needle itseli will be produced as the eccentric rotates.

The hooks b are arranged to follow the lateral movement of the needles during the formation of the stitch, so that the inner peripheries of the hooks will lie close to the needle throughout the entire operation. or this purpose, the pivoted holder 5 is arranged to be rocked on its pivotal support at A through the agency of an arm (Z which is connected with a radial projection if from a rock shaft d which is arranged to be oscillated in the operation of the machine. In the construction shown, the rock shaft (Z is provided with an arm d connected by means of a link d with an eccentric strap (6 which cotiperates with an eccentric 13 upon the main driving shaft B.

For the purpose of balancing the machine, the needle bars a are arranged to reciprocate alternately, the eccentrics B being, as shown, oppositely disposed to each other. For this reason, the sets of hooks coiiperating with the needles must be separately operated, the mechanism provided for this purpose being best shown in Fig. 1. It is necessary, in the formation of the stitch, that the hooks I) should be oscillated, and, for this purpose, each hook is provided with a pinion 0" at the lower end, the said pinion meshing with a rack I) which is ar "angcd to be reciprocalcd through the action of an elbow lever If pivoted at I) and operated by a cam L", which is shown as connected to a eoui'itershaft b. lhc said countcrshaft is driven from the main shaft 1) through the agency of bevel gears l3 and (1". The rack [1" above described moves back and forth during the rolal ion ol" the cam I)", lhus oscillating the books I; throughout the series. The other scls ol hooks are made longer than those prcriously dcscribcd and provided wilh pinions li'" arranged to cooperate with a rack N", the con.-;tru .:tion and operation olf which is -llio same as that of the rack b", cxccpt lhal the two racks reciprocate in opposite llii'c 'lions, one movim in one direction while llll. other moves in the other.

\Vliilc only lwo cls ol nciallcs are hcrcin shown, it is obvious llial any numbcr ol sets lcreircd may lic cvl'cinlcd'acro s the machine,

the lwo racks o and /i"" cooperating rcspeclively will] all llll nool b longing lo all lhc lle llln which opcralc al llic same lime. l lumechanism l'or producing the lalcral movement ol' llic lioolv: is also duplicalcd, as best shown in l ig. .3, there being an arm I/ corrcspomling' to the arm (5" which opci ales the arm d'-'", (be two arms I! and d swinging in opposite dircclions, in order to have the morcmcnl' ol the hooks correspond ill; lbat ol' llic nccdlcs.

For the purpose ol" rendering the hooks acccssil-ilc for threading, or olbcr purposes, ll o hoolccarrying members 1" are arranged in be easily disconne ted 'l'l'om the actuating devices d, so that they can be rocked on their pivotal supports until the hooks themselves are moved out from under the work-supporting table G, as shown in dotted lines,

Fig. 3. In the construction shown, the arms (Z are arranged to hook over the rods or pins 6 supported in lugs formed on the hooksupporting members and are provided with finger pieces (5 by which they can be easily lifted to releaseithe said members. In order that the means for producing the oscillation of the hooks may not interfere with the operation above described, or'with the lateral movement of the hooks inthe operation of the machine, the racks I) and b are shown as cut on the arcs of circles struck from the pivotal axes A and A of the men'ibers I) and if respectively, so that as either ofthe said members is rocked upon its pivotal support, the pinions will slide along the face of the rack which is operati ng, without coming out of mesh.

For the purpose of adjusting the initial position of the hooks relative to the needles, the studs 6 are cccentrically supported with relation to the lugs, so that by turning said studs the lateral position of the hooks can be slightly varied. This variation in position is best indicated in dotted lines, Figs. 3 and 4. As shown in Fig. 5, the end of the stud is screw threaded in the lug, and the engaging portion thereof is smaller in diamelcr than the said end and is eccentric thereto. The stud is also shown as provided with a screw driver slot for turning the stud to adjust the same.

Claims.

1. In a sewing machine, the' combination with a needle bar provided with a needle;

of means for producing longitudinal and lateral niovemcnls of said needle bar; a hook adapted to oscillate around the needle on an axis substantially parallel to the axis of the needle bar; a, pivol'ally supported hearing member for said book; an actuating device connected with said supporting member to produce an oscillating movement thereof; and, means l'or disconnecting said actuating derico l'rom said member, sub-- slanl ially as described.

2. in a sewing" machine, the combination with a. lalcrally movable nccdlc; of a hook arranged to oscillalo around. [he nccdlo on an. axis snbslanlially parallcl lo llic axis ol' llio nccdlc; a. pivolally supported bearing member for said book; a rcciprr'nraling mcm her; and means for dclacliably securing said bearing mcmbcr to said rcciprocaling mcmbcr, \vhcrcby the said bcaring mcmbcr is oscillated during the oporalion ol llic machine aml may be disconnm-lcd lo rcndcr llio hook accessible, subslanlially as dofi'lllllfllll.

$3. in a slaving macliinc. the combination with a lalcrally movablc nccdlo; of an oscileeaeao i s lating hook the axis of which is substan tially parallel to the needle; means for producing a lateral movement of said. hook to correspond to that of the needle; a pinion connected with said hook; and a reciprocating rack cooperating with said pinion to oscillate said hook.

4:. In a sewing machine, the combination with a needle; of means for producing a lateral'movement thereof in the formation of a stitch; a hook cooperating with said needle; a pivotally supported bearing member for said hook; a reciprocating device connected with said bearing member to produce a lateral movementof the hook; a pinion connected with the hook; and a reciprocating rack cooperating with said. pinion and having its face curved on an arc struck from said pivotal support as a center.

5. In a multiple needle sewing machine, a series of needle-bars each provided with a plurality of needles, so arranged to reciprocate alternately; a plurality'of hooks to cooperate with each bar a pinion connected with each hook; means for producing lateral movements of said hooks and bars in iiniso reciprocating racks cooperating with said pinions to rotate said hooks;

and means for alternately reciprocating said racks. r

6. The combination with. a plurality of laterally movable needles; of laterally mow ciprocating said groups of needles alternately; hooks arranged in corresponding groups, said hooks surrounding the needles and oscillating on axes substantially in line with the needles; gears connected with said hooks; and alternately reciprocating racks meshing with said gears,

In testimony whereof, I have s1gned my name to this specification in the presence of two subscribing witnesses.

LEWIS Fl FAL'ES.

Witnesses F. L.TIFFANY, T. Mam-m.

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