US853874A - Presser-foot attachment for sewing-machines. - Google Patents

Description

No. 853,874. PATENTED MAY 14, 1907.

- I 1). H. HADSBLL.

PRESSER FOOT ATTACHMENT FOR SEWING MACHINES.

APPLICATION TILED OCT. 24, 1906.

I Javefin- ,Dorr Jfad'a el,

UNITED STATES PATENT OFFICE.

DORR H. HADSELL, or 'BROCKTON, MASSACHUSETTS, ASSIGNOR OF ONE- HALF -To THOMAS D. BARRY, OF BROOK-TON, MASSACHUSETTS.

P'REssER- oo'r ATTACHMENT FOR SEWING-MACHINVEHSQ Specification of Letters Patent.

Application filed October 24,1906- Serihl No. 340,340-

To all whom it may concern.-

Be it known that I, Donn H. HADSELL, a citizen of the United States, residing at Brockton, in the county of Plymouth and State of Massachusetts, have invented-an Improvement in Presser-Foot Attachments for Sewing-Machines, of which the following description, in connection with the accom panying drawings, is a specification, like letters on the drawings representing like parts.

In the modern shoe factory, sewing machines are 'usu ally run at such speed that theleather' is fre uently injured, especially patent leather, t e needle and presser foot frequently heatin andsoftening the enamel of the leather so t at the surface of the leather is roughened, the stock burned and the stitches rendered irregular. Accordingly I have devised the hereinafter described means of oil to the leather at the being overlapped and stitc for automatically applying a very thin film points where it is ed, whereby injury to the stock is prevented, the'stitching' is rendered uniform, the work is expedited, breakage of needles is prevented, lubricant is economized, and various other advantageous results secured.

In carrying out" my invention I provide means for feeding oil in limited quantities to the presser foot and distributing the same in exceedingly small amounts in line with the surface or surfaces of the leather at the point where the pressure is applied thereto, and especially the stitching hne where the greatest friction takes place by reason of the rapid in and-out' movement of the needle or needles.

The constructionaldetails; of my invention and furtheradvantages and the operation thereof will be pointed out more at length in the course of the following description, reference be' had to the accompanying drawings, in w ich I have illustrated .one ofthe preferred embodiments of my invention.

In the drawings, Figure 1 is'atop plan of; Fig.- 5 is aside ele'vation'looking at the right-hand side of Fig. 4 6 shows my invention applied to the head of a sewing machine, .viewed' endwise; and Fig. isa side Patented m 14,1907. w

arm 1 of a typical sewing machine and have omitted most of the constructional details of the machine itself, as my invention can readily be understood without explaining the details of the usual sewing mac ine. At a convenient point I provide a reservoir or fountain 2 of oil connected by a siphon pipe 3, to a stationary portion of the machine, be-

ing herein shown secured at 4 t0 the sewing machine arm 1 and thence extended ,down- Wardly adjacent the presser foot rod 5, where it is shown'as terminating at 6, the. usual [needle carrier'7 and needles 8 being'herein shown inposition in front of the presser. foot rod or carrier 5.. The presser foot is herein shown as com rising a usual wide, thin 1plate 9 and a blockike Set piece 10 adjustab y securedthereto by a slot 11- and set-screw 12 just behind the needle holes 13, said plate 9 terminating at its rear end in an upward extension 14 forming. a split-collar adapted to be clam ed'by ascrew 15 to the rod or carrier, 5. channel or hole v16 and a ateralvchannel or hole 17, opening therefrom a proximately in line with the to surface of t eadjacent ortion of the wor '11. e., approximatel in he with or just above the bottom 18 of t e plate A 9. Secured to the top of the presser foot at 19 is a tube 20 which extends rearwardly and then around the rear side of'the presser foot at 21 tothe inner-side thereof, where it is bent upwardlv at 22 to form a stem-adapted to be secured by any suitable union 23 to the depending end of the siphon tube 3. At any ntheblock 10 I rovide a vertical convenient place in the tube 20, preferably in the upwardly extending stem portion thereof, I provide a regulating valve 24. It-

will be understood that while I have thus described mv invention in all its preferred ioo details, I do hot intend to limit myself to this particular construction, asfthe supply tube may be connected with the oil-delivering ducts in a wide variety of ways, according to the articular construction of the machine to w chiny invention isapplied, the 'gist-of my, invention residing in rovidmg, in conmotion with a sewing mac e means for de 45 rately. Byha livering a thin film of oil to the leather surface at the points where the destructive or injurious friction takes place.

In use the operator laces the two pieces of leather together, as or instance the vamp and toe cap of a patent leather shoe, the toe cap overlapping the front end of the toe portion of the vampI in .usual manner, and then laces them in t e presser foot in positlon to e stitched together, the top p1ece being against the depending edge of the block (pork tion 10'of the presser foot and engage by the under side 0 the plate 9 while the-a acent portion of the vamp is engaged beneath the S ottom part-10. In this posltion the duct 17 delivers a thin small line of oil to the adjacent surface of the top piece of leather and said oil is s read in an im erceptible film over the I su ace of the leat er, by contact with the 20 bottom of the presser foot 9 while the duct 16 delivers a similar small portion of oil to the surface of the vamp, which is spread into-a small almost im erceptible film by the'bottom surface of tiie'block or guide portion 10 2 5 of the presser foot, as the work is fed alongbeneat said presser foot. As the needles 8 reciprocate rapidly through the'leather theyare maintained properly lubricated by the oil delivered from theduct 17, so that they 0 stitch freely and without unduly heating the leather." The result is that the stltches are uniform, whereas before it has been a common occurrence for the leather to st ck or feed improperly, so that a number of stitches 3 5 would be formed in approximately the same place in the leather, t e rapid reclprocations of the needle resulting in cutting or severlng the leather as well as burning it and melting the patent surface. My invention also per- 0 mits the work to proceed not only with great which I have found gives the best results, and

the delivery of oil may be further regulated, if found necessary in any given instance, by the valve 24. The movement of the presser foot is taken up by the spring action of the pipe 3 below its fastening 4,'although any other convenient means permitting the desired movement may be provided, as by making the union 23 a telesco )ing unien or by )roviding a section of rub er tubing or the like. I pre er to provide the short section of )ipe 20 as an integral portion of each presser oot, as it permits the quick adj 'ustment or change from one presser foot to another, as for instance for two, three or four-needle. machines,

etc. Also, while I refer to distribute the oil from the presser oot itself, it will be understbod that my invention is not limited in all cases to this construction, as it is suflicient in some instances .to deliver the desired small amount or film of oil to the leather at the re ion of stitching, whether it is delivered direct y from the presser foot, or not.

Having described my invention, what I claim as new and desire to secure by Letters Patent is, I

1. In a sewing machine, a presser foot for engaging'flat upon the top surface of the work, and lubricating means including ducts opening on the flat work-engaging surface for maintaining the work-engaging surface of said resser-foot and the surface engaged there y constantly lubricated.

, 2. In a sewing machine, a presser-foot havmg its work engaging surface formed in two dliferent approximately arallel planes, and means for delivering 1m ependent portions of oil to said different work-engaging surfaces. i

3. In a sewing machine, a presser foot, and means for delivering oil to lubricate the workengaged. thereby, said means including a fountain and a siphon pi e therefrom.

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

' DORR H. HADSELL. Witnessesr -JOHN H. GORDON,

HELEN L. JoNEs.

Images