(No Model.) W. R. PARSONS HEMSTITCHING ATTACHMENT FOR MACHINES, No. 311,673. Patented Feb. 3, 1885. Zigy. 7. 77'i. A.

WITNESSES NWENTOR 67 Wisdoze/ F. Forsors, w p By 72ds Attorney 2 . . G-6. C. 72------st

perEas. Photo-Lahographer, Washingto UNITED STATES PATENT OFFICE.

WINSLOW. R. PARSONS, OF WATERLOO, IOW.A. HEV, ING ATTACHMENT FOR SEw NG-MACHINEs. SPECIFICATION forming part of Letters Patent No. 31,673, dated February 3,385. App'ication filed February 25, 1884. (No model.) To all whom, it Taty conce77: and presser, respectively. Fig. 5 represents Be it known that I, WINSLOW. R. PARSONs, a back and end views of a one-part block. citizen of the United States, residing at Wa Like letters of reference indicate correspond terloo, in the State of Iowa, have invented a ing parts and their nearest analogues in the 55 new and useful Improvement in Heinstitching several figures. - Attachments for Sewing-Machines, of which N represents the ordinary needle-bar and the following is a specification. needle, P the ordinary presser - bar and its This invention is additional to one having stitching-foot, and F the feed-bar, of an ordi a like title described and claimed in my speci dary sewing-machine. O fication forming part of a previous applica C C represent, the level of the cloth-plate, tion for patent filed July 14, 1883, Serial No. and T, Fig. 3, represents an ordinary throat 100,840. plate. These features may be those of any un My present invention consists in certain der-feed sewing-machine. novel combinations of parts and features of con To keep two pieces of cloth, a, b, apart during struction, hereinafter described and claimed, the stitch-forming period in the best way designed, primarily and as a whole, for use on known to me, so as to cause the Sewing mech under-feed sewing-machines, in combination anism and its threads t t to produce the long With their ordinary or stitching presser-feet. stitches for “hemstitching, as illustrated by The special objects of this invention are, Fig. 3, I support a separating-bar horizon

first, to form a separating-bar with a free pas tally across the path of the needle by means Sage above and behind it for the upper piece of a “spring-arm, A, for example, attached of cloth, and a rear pressing-surface for keep rigidly to and projecting from a substitute ing both pieces of cloth in mesh with an un “shuttle-race slide, S, and in like manner der-feed by a henstitching “biock wholly connected with said separating-bar, so as to pre 75 25 distinct from the presser-foot, so that the or clude any turning or torsional displacement clinary stitching-foot may be used as afore

of the latter by the feed. Said separating-bar Said; also, to provide for passing the loose may be a distinct part, Bs, of a two-part stitches freely through the “presser or stitching-block, as illustrated by Figs. 1 to 4, presser-support of a henstitching attachment inclusive, or a portion, S, of a one-part block, or henstitching attachments of any form; also, B, Fig. 5. In either case the main and pecu to provide, by improved means, for making the liar functions of the separating-bar and its helmstitching more or less open or “wide' by supports are precisely alike, and in each case varying the effective thickness of the separat it is constructed with a needle hole or 'slot, ing-bar and correspondingly adjusting the ac, extending through its rear edge from the presser of said hemistitching-block to preserve path or foremost reach of the needle. By said free passage above the separating-bar by uniting with said separating -bar Bs or 8 a. like means; and, finally, to facilitate making presser or presser-support, Bp of p, in rear said block by constructing it in two parts, as thereof, parallel there with, and of greater hereinafter specified. vertical depth or thickness so as to project 40 A sheet of drawings accompanies this speci above it, with a passage-way, c, between the fication as part thereof. two, and a passage-way, v, formed in part by Figue 1 of these drawings is a perspective the sole of the ordinary presser-foot during view of a helmstitching attachment for under the helmstitching operation above said sepa feed sewing-machines illustrating this inven rating-bar, provision is made for the free pas tion. Fig. 2 is an elevation of the same in po sage of the upper cloth, ct, to and beneath the sition on a . Fig. 3 represents pressing-surface, so that both pieces shall be a sectional elevation of the same parts, illus fed together and uniformly without the aid of trating the helmstitching operation. Fig. 4 a special . IOO represents back and edge views of the hem To provide for the free escape of the loose stitching-block shown in Figs. 1, 2, and 3. stitches beneath the presser or presser-sup Figs. 4 and 4" represent end views of sets of port, however the latter may be formed, I interchangeable top pieces for separating-bar have found that it is of great advantage to

2 311,673 provide a groove, u, in the sole of the same, in behind said block or bar, with a clear space line with the stitch-escapeslota of the separat immediately above said block or bar for the ing-bar, as best shown in Figs. 4 and 5. With free passage of the upper piece of cloth over 7o out this provision the stitches would sometimes it, and a clear space or passage immediately 5 catch at the front edge of the presser. behind said block or bar for the descent of For rendering the hemstitching more or less said upper piece of cloth to and beneath said open or wide, I provide the separating-bar, pressing-surface, for the purposes set forth. Bs, for example, with interchangeable top This is claimed in my previous specification 75 pieces, ts, of different thicknesses. Three are aforesaid, and is hereby disclaimed in favor Io shown detached in Fig. 4 by way of illustra of my said application for patent filed July 14, tion. More or less than three may be used. 1883. Each of these top piecests contains centrally I claim as my invention and desire to pro a part of the stitch-escape slot ac, and the bar tect under the present specification- 8O Bs is constructed with an undercut groove in 1. A hemstitching attachment adapted to I5 its top, to which they are all fitted, and in be secured to the bed-plate of a sewing-ma which one of a suitable thickness is held during chine, and having two arms-viz., a separat the stitching operation, as shown in Figs. land ing-bar and a presser-united at one end and 3, its part of the slot ac aligning perfectly with separated at the other by a slot or space, the 85 that in the bar proper. Interchangeable top free end of the rear arm being thicker than 2O piecestp, Figs. 1, 2,4', attached in like manner the corresponding end of the front arm, and to the presser Bp, provide for adjusting its ef the latter having a needle-notch in its rear fective thickness to that of the separating-bar, edge, as set forth. as provided with its respective top piecests. 2. In combination with the sewing mech- 9o The presser top pieces tp obviously require anism and ordinary stitching presser-foot of 25 no slotting. Inserted from the front in un an under-feed sewing-machine, a hemstitch dercut stop-grooves in the line of feed, as ing block supported beneath and separate shown, and arrested in proper position by a from said presser-foot, and constructed with slight taper, as indicated, or by shoulders or a separating-bar and a presser of great verti- 95 offsets in customary manner, said interchange cal depth behind and parallel with said bar. 3o able top pieces are readily inserted and with free passage-ways for the upper cloth being drawn by the right hand of the operator with formed between said bar and the presser-foot out removing the attachment from the ma and between said bar and said presser, sub chine, and their accidental displacement in stantially as herein specified, for the purposes Ioo use is effectively prevented, the stop-grooves set forth. - 35 rendering them immovable save in a direction 3. In combination with the sewing mechan diametrically opposed to that of the feed. ism of a sewing-machine, a hemstitching at The helmstitching - blocks above described tachment or attachments comprising a sepa for use on under-feed machines, whether con rating-bar projecting in front of and a short Io5 structed in one or two parts and with or with distance behind the path of the needle, and to out said interchangeable top pieces, are adapt provided with a rearwardly - opening stitch ed for support by one and the same spring escape slot, and a presser or presser-support arm A, as above described, by making the behind said separating-bar, with a stitch-es support end of the separating-bar Bs or S cape groove in its sole in line with said slot, IIo relatively thick, or of the same thickness as substantially as herein specified, for the pur 45 the presser or presser-support at the support poses set forth. end of the latter, forming a level surface, to 4. In combination with the sewing mechan which the spring-arm is suitably riveted, as ism and ordinary presser-foot of an under shown. feed sewing-machine, a henstitching, attach- II5 Manufacture is materially facilitated by ment comprising a separating-bar provided s O making the separating-bar Bs and pressel' Bp with interchangeable top pieces of different as distinct parts, and uniting them to form a thicknesses held in undercut stop-grooves in hemstitching-block by means of the spring the line of feed, and a presser or presser-sup arm A, as illustrated by Figs. 1 to 4, inclu port provided correspondingly with inter- I2O sive. The passage-way v between the sepa changeable top pieces, as herein specified, for 55 rating-bar and the presser may be either in the purposes set forth. clined in the direction of the feed, as shown 5. The improved hennstitching attachment in Figs. 1 to 4, inclusive, or have vertical for under-feed sewing-machines, composed of walls, as represented in Fig. 5, or walls of any a shuttle-race slide, S, a Spring-arm, A, the I25 other approved form. separating-bar Bs, with its slot a and support 6o I do not claim herein, broadly, the combi end , and the presser Bp as a distinct part, nation on an under-feed sewing-machine, sub said bar and presser being separately attached stantially as hereinbefore specified, of a sepa to said spring-arm, so as to be supported rating block or bar projecting in front of and thereby in the manner set forth. a short distance hehind the path of the needle W. R. PARSONS. 65 to keep two pieces of cloth apart during the Witnesses: stitch-forming period, an ordinary feed-dog, L. S. PARSONS, and a pressing-surface above said feed-dog E. G. MOORE.

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It is hereby certified that in Letters Patent No. 311,673, granted February 3, 1885, upon the application of Winslow R. Parsons, of Waterloo, Iowa, for an improvement in “Hemstitching-Attachments for Sewing-Machines,” an error appears in the printed specification requiring the following correction, viz: In line 95, page 2, the word “great” should read greater; and that the Letters Patent should be read with this correction therein to make it conform to the record of the case in the Patent Office. Signed, countersigned, and sealed this 10th day of February, A. D. 1885. SEAL. M. L. JOSLYN, Acting Secretary of the Interior. Countersigned: BENJ. BUTTERWORTH, Commissioner of Patents.