US1239825A - Sewing-machine. - Google Patents

Description

W. R. ROGERS.

SEWING MACHINE.

APPLlcATloN FILED luNE so. |915.

Patented Sept. 11, 1917.

4 SHEETS-SHEET l.

WIT/VESSES W. R. ROGERS.

SEWING MACHINE.4

APPLICATION FILED IuNE 30. 1915.

Patented Sept. 11, 1917.

4 SHEETS-SHEET ZL v www@ A 77'0HIVEYS W. R. ROGERS.

SEWING MACHINE.

APPLICATION FILED JUNE 30. 1915.

Patented Sept. 11, 191?.

4 SHEETS-SHEET 3.

m m U Wl TNESSES Patented Sept. 11, 191?.

4 SHEETS-SHEET 4.

W. R. ROGERS.

SEWING MACHINE.

i." APPLICATION FILED .IUNE 30. I9I5. L39,

WILL E. ROGERS, OF NEWARK, NEW JERSEY, ASSIGNOB, T0 WILLIAM RAUIBIT- SCHECK, OF NEW YORK, N. Y.

SEWING-MACHINE Specification of Letters Patent.

Application filed .Tune 30, 1915. Serial No. 37,233.

To all whom t may concern:

Be it known that l, WILLIAM R. Roenes, a citizen of the United States, and a resident of Newark, in the county of Essex and State 0f New Jersey, have invented a new and linproved Sewing-Machine, of which the following is a specilication.

My invention is directed more particularly to providing a sewing machine, which produces zig-zag stitches, with mechanism adapted, among other things, for the production, by automatic means, of a straight seam with gaps, to unite a strip of fabric material of indeterminate length, to a body, or base, fabric, on which it is mounted and supported, while producing gaps therein, as hereinafter described.

l ain aware that it is not new to produce mechanically, a single gap of determinate width, in such a seam, but such gap is thus produced by so changing the operative position of the material, that it shall be suffi-A ciently out of alinement with the seam, that the needle shall not engage the material of the strip, but only the body fabric during the interval required to produce such gap, thus leaving a gap of determinate width adapted for the side opening in a stay pocket, but the saine is not produced by 'automatic means nor is the mechanism adapted for such automatic production thereof at measured intervals, or for the reinforcement of the seam by a continuous series of automatic operations, with a plurality of tie stitches at the beginning and end of each gap.

Among other objects, my invention 1ncludes that of providingautomatic means for the mechanical stitchin of a seam of the character described, which shall be adapted to produce a fabric structure suitable for mounting thereon, in operative position, of a set of hooks and eyes, by engaging the mates of the pairs in the gaps thus pro-v vided,'they being retained in such position by their Shanks, thus dispensing with the necessity for stapling the hooks and eyes to the fabric, thus obviating the objectionable features of such method.

A practical embodiment of the invention is represented in'the accompanyingdrawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1-is a side elevation of the sewing machine with parts shown in section and with the guides for the fabric strips omitted;

Fig. 2 is an elevation of the front end of the same with the guides for the fabric strips 1n position; v

Fig.3 is an enlarged transverse section of the sewing machine on the line 3-3 of Fig. l;

Fig. l is a similar view of the mechanism for imparting lateral reciprocatory motion to the feed bar While it is inoperative;

Fig. 5 is a sectional plan view of the same on the line 5*:3 of Fig. 3 and with the parts in operative position; y

Fig. 6 is a plan view of two fabric strips sewed together to form spaced openings for hooks or eyes; and

Fig. 7 is an enlarged transverse section of the same on the line 7 7 of Fig. 6.

ln sewing machines. of the class mentioned as adapted to produce a zig zag stitch, the means now in use for producing such stitches includes one type which provides a positive, lateral reciprocatory motion of the needle bar between vertical reciprocations of the latter, the same being mounted to reciprocate vertically both in its normal and defiected positions, and another type in which the needle bar is fulcrumed to vibrate laterally, and to normally reciprocate vertically, but at an angle in the deflected posi tion.

ln the drawings l show my invention as embodied in a sewing machine of the Singer, vibratory needle type; it is however, manifest that my automatic mechanism for the control of the lateral motions of the needle bar is equally adapted for the control of a needle bar mounted t0 reciprocate vertically in both positions, without departing from the spirit of my invention,l and that this phase of construction is not material as affecting its utility, or scope.

The stitch-producing` mechanism of the sewing machine consists of a needle A and the usual looping device B, of which the needle A is secured in a needle bar C mounted to reciprocate in an arm D fulcrumed at its upper end on the bracket arm E of the sewing machine. By the arrangement described the arm D and the needle bar C and with it the needle A can be vibrated laterally, that is, from a normal vertical position to right and back again to vertical Patenten sept. ii, aait.,

position. The needle bar C is connected by the pitman F and crank F with the needle bar shaft F2 for imparting a continuous reciprocating motion to the needle bar C and. the needle A.

The automatic mechanism for controlling the lateral motions of the needle bar is as follows: A transverse cam shaft G is journaled in suitable bearings arranged on the bracket arm E and on the said cam shaft 'G is secured a worm wheel G in mesh with a worm G2 secured on the needle bar shaft F2 so that when the latter is running a rotary.motion is given to the shaft G to rotate the latter in the direction of the arrow a. On the front end of the shaft G is secured a cam H in the form of a wheel having in its peripheral face two sets of dialnetrically opposite notches or recesses H, H2 and H2, of which the notches H and H3 are comparatively short in comparison with the notches H2, as will be readily understood by reference to Fig. 1. The peripheral face of the cam H is engaged by a friction roller I jornaled on the free end of an arm I mounted to move laterally on the bracket arm E and pressed on by a spring I2 to hold the friction roller I in engagement with the peripheral face 'of the cam H.

The arm I thus receives lateral motion from the cam4 H when the roller I engages in any of the recesses in the periphery of the cam and again when the roller is disengaged from the recess and such' motion is ltransmitted by it to the needle bar frame D through ,the link J to the part J2 of which it is connected by the pi-n J let through the slot or guideway J .2. By the lateral motions thus imparted the needle bar C isdeliected by the entry of the roller into a recess and it is reciprocated in such deiected position until the roller is disengaged from the recess when the needle bar 'is returned to its normal position. The link J is preferably made in two parts J2, J3 adjustably connected with each other to permit of accurately setting the arm D. For the purpose mentioned, the part J2 is provided with an elongated slot J 4 through which extend screws J5 engaging the part AJ3 to allow of adjusting the latter relatively to the part J 2. In order to,vary the sidewise throw of the needle bar C,.the pivot J is adjusted up or down in the guideway I2. When the cam H is rotating inthe direction of the' arrow a then the needle bar C is held in vertical position as long as the roller I travels on the peripheral face of the cam H. When the roller I passes into the first notch H and travels along thesame then the needle bar C is swung to the right and is returned to normal position by the roller emerging from the recess and immediately thereafter the friction roller passes into thesecond notch H2 to again cause oscillation of the needle -tion roller I passes into the 4notch H2 to again oscillate the Ineedle'bar to the right and to return the needle bar to vertical position at the time the friction roller I passes out of the' last notch H2. By the arrangement described, the stitch-producing mechanism makes a row of stitches K while in vertical position to fasten the two strips L and L together along the side of the edge of the stripL; during the time the friction roller passes in and out of the notch H the cross or tie stitches K are made; during the time the friction roller I travels along the notch H2, a row of stitches K2 is made on the ,strip L only; and during the time the friction roller I passes in and out of the notch H2cross stitches K3 are made from the piece L onto the piece L, after which the row of stitches K is continued,v

as will be readily understood'by reference to Figs. 6 and 7. Thus by the arrangement describedv an openingL2 is left between the strips L and L', the opening being of a length corresponding to the distance between the cross stitches K and K2. A hook or eye L3 may be readily proiected through the opening L2, as indicated in Fig. 6, with the base of the hook or eye L3 abutting against the seamformed by the stitches K uniting the two strips L and L with each other.

During the time the rows of stitches K and K2 are made, the feed bar N is operative, but during the' time the cross stitches lK and K3 are made the feed bar N is rendered inoperative. .For this purpose the following arrangement is made: The feed bar N is provided with a transversely eX- tending arm N fulcrumed on an arm,0 of a rock shaft O extending lengthwise of the machine underneath the base E and journaled in suitable bearings attached to the said base. When the shaft vO is rocked a forward and backward movement is given to the feed bar N. An up and down swinging movement is given to the feed bar N by the usual mechanism, including a hollow rock shaft P having an arm P movably engaging a fork N2 formed on the feed bar N. The shaft P is provided near its rear end with an arm P2 connected by an eccentric rod P3 with an eccentric P4 held on the needle bar shaft F2 so that when the machine is operated a continuous rocking motion is given to the shaft P which by the arm P imparts an oscillatory movement to the feed bar N. Through the hollow shaft P extends the shaft B driving thelooping device B and driven by pulleys B2, B3 and a belt B1 from the needle bar shaft F2.

The rock shaft O, previously mentioned, is provided at its rear end with an arm 02 provided with an elongated slot or guideway 03 in which is movably-mounted a slide Q also engaging a guideway R2 in a swing arm R having its pivot R journaled in a bearing formed on a bracket E2 depending from the base E. The arm R is pivotally connected with an eccentric rod S of an eccentric S2 mounted on the needle bar shaft F2, so that when the machine is operated the arm R is caused to oscillate and the oscillatory movement of the arm R is transmitted by the slide Q to the arm O2 to rock the shaft O. The slide Q, is provided with a pivot pin Q pivotally connected by a link T with one arm of a bell crank lever T fulcrumed at I groove V in the peripheral face of a cam V secured on the :shaft G previously mentioned. The cam groove V is provided with o'sets V2, V3 for imparting a swinging motion to the bell crank ylever U. During the time the friction roller U2 is traveling through the straight portion of the cam V and groove V, the slide Q isheld in the guideway of the arm R a distance from the axis of the arm, so that a swinging motion is given by the slide Q to the arm 02 to rock the shaft 0, as previously mentioned. When, however, the friction roller U2 moves into engagement with the offset V2 or V3 then a. rocking motion is given to ythe bell crank lever U whereby a similar rocking movement is given to the bell crank lever T so that the slide Q is moved into central position relatively to the aXis of the pivot R and consequently the slide Q does not impart a rocking movement to the shaft 0 for the tlme being. The offsets V2 and V3 are so arranged relatively to the notches H, H3 that when the cross stitches K and K3 are made the forward and backward feeding movement of the feed bar N ceases, but during the time the rows of stitches K and K2 are made the friction roller U2 travels in the straight portions of the groove V and the slide R is a distance from the center of the pivot R', and hence a rocking motion is `given to the shaft 0, thus moving the feed bar X forward and backward.

The link T, previously mentioned, is preferably made in two parts T3, T4, adjustable one on the other to lengthen or shorten the link, and for this purpose the part T3 is provided with an elongated slot T5 through which extend screws T6 screwing in the part T4. On loosening the screws T6 the part T4 of the link T can be adjusted to lengthen or shorten the length in order to obtain proper adjustment of the pivot pin Q andl the slide Q to move the latter into axial alinement with the pivot R', as previously explained.

The fabric strips L and L pass through suitable scrolls W, W attached to the base E at the front of the machine to double up the edges of the strips and to properly guide thesame to the needle A, the feed bar N and the presser foot X of usual construction (see Fig. 2). The strips L and L prior to reaching the scrolls W and W pass through tension devices W2, W3 and the strips are guided to the said tension devices over a guide rod W4.

The operation is as follows:

When the machine is operated, the stitchproducing mechanism forms a row 'of stitches K for a predetermined distance and then the forward and backward feeding movement of the feed bar N ceases and the needle bar C is oscillated laterally to form the first cross or tie stitches K, that is, at the time the friction roller I passes through the notch H. Wvhen the friction roller T engages in the notch H2 the needle bar C is held in deflected position and the short row of stitches K2 is now formed on the trip L only, and during this time the feed bar N is operatively positioned. When the end of the rows of stitches K2 is reached, the operative movement of the'feed bar N ceases and the' needle bar C is again oscillated to form the cross stitches K3, the friction roller lf then passing through the notch H3. When the friction roller T leaves the notch H3 the needle bar C is returned to vertical position and is held in this position for forming the next row of stitches K to fasten the strip L to the strip L.

There is a related motion between the needle bar and the feed bar whereby at periodic intervals, during which the feed bar is inoperative, the needle bar is operatively vibrated laterally, between downward reciprocations, to produce tie stitches, and in the intervals between such lateral vibratory periods of the needle bar the feed bar is operatively reciprocated to advance the material forward in a straight line. Thus by the arrangement described the rows of stitches K are of the same predetermined length and the openings L2 are formed intermediate the said rows of stitches K, and the opening has its side walls reinforced by the sets lof cross stitches K and K3 so as to securely hold the hook or eye L3 in position in the opening.

Having thus described uy invention, T claim as new and desire to secure by Letters Patent:

1. In a sewing machine, the combination of a feed mechanism for feeding the material forward in a straight line, a stitch producing mechanism having a reciprocating. needle bar adapted to vibrate laterally of ill@ lllti the line of movement of the material, means for so vibrating the needle bar and means for rendering the feed mechanism inoperative vduring such lateral movements of the needle bar.

2. In a sewing machine, the combination of a feed mechanism for feeding the material forward in a straight line, a stitch producing mechanism having a reciprocating needle bar, the needle bar and the feed mechanism being laterally movable relatively one to the other and means for rendering the feed mechanism inoperative at intervals in order to permit of the production of a line of stitching having lateral 0E- sets.

3. In a sewing machine, the combination of a feed bar, a stitch producing mechanism having a reciprocating needle bar adapted to vibrate, a revoluble cam, means connecting such cam with such feed bar to periodically render the feed bar inoperative, a second revoluble cam and a connection between the latter and the needle bar to vibrate the latter at the time the feed bar is inoperative.

4. In a sewing machine, the combination of a feed mechanism having a feed bar, a stitch producing/mechanism having a reciprocating needle bar adapted to vibrate laterally, a needle bar shaft connected with the needle bar to reciprocate the latter, a cam shaft driven from the needle bar shaft and provided with two cams, a connection between one of such cams and such feed bar to render the vlatter periodically inoperative and a connection between the other cam and the needle bar to vibrate the latter `during the period the feed bar is inoperative.

5. In a sewing machine, the combination of a feed mechanism for feeding the material in a straight line, a stitch producing mechanism having a reciprocating needle bar, mounted to move laterally of the line of movement of the material, means for moving the needle laterally and operatively retaining it in this position for a predetermined length of time and then returning it to its normal position and means for rendering the feed mechanism inoperative during the lateral movements of the needle bar.

In testimony whereof I have signed my name to this specification inthe presence of two subscribing witnesses.

wiLLIAM i2.A Roenes.

Witnesses:

WILLIAM RAUBrrsCHEK, .Inma MAURER.

Images