US72642A - Otis w - Google Patents

Description

@man faire @anni ffies.

O TIS W. HRR, OF CAHI'GOPEE, MASSACHUSETTS. Le'amratem No. 72,642, dans member 24, 1867.

@its .salaris referia tu in time Eaten prima mit mating pat at ite time.

'.lO` ALL WHOM IT MAY CONCERN: f v

Be it known that I, OrIS W. Henn,- of Ghicopce, in the county of Hampden, andCommonwealth of Massachusetts, have invented a new and useful Lap-Seam Guide for Sewing-Machines; and I do hereby declare that the -following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of this specification, and to the letters of reference marked thereon, in which- Figure 1 is a plan view of one side of the guide,

Figure 2 is a plan view of the reverse side of the guide, an

Figure 3 is an end view of the guide. The nature of my invention consists in the arrangement and construction of different plates of metal,

together forming a guide with which'to facilitate the sewing together oipieces of cloth, by what is known as alap-s'eam upon a sewing-machine, to which the guide is attached.

That others skilled inthe art may be able to make and use my invention, Iwill proceed to describe its g construction and itsoperation.

In the/drawings, a represents a thin plate of metal, being elongated at one portion of the back end into i the ear-piece v, said ear-piecew being perforated neanone end, into which perforation is firmly secured the pin n having a head, m; a male-screw thread being cut upon the other portionof said pin n, upon which turns the nut-m, having a female-screw thread cut therein. The opposit end of the plate ais elongated near one side and formed into the tongue A. The small piece h is secured to the plate d, the part h' of the piece la' being bent or turned so as to stand nearly perpendicular to the surface of the plate a. The plated is of the same general shape as the plate a, with the exception' that ithas no' ear-piece v, said plate being of about the same thickness as the plate a. The plates b and c are of the same general form as the plate d, and are placed together so as to conform to each other in shape and size, and they form together one pair of plates. The

plates a and d are also placed together, conforming to each other in size and shape, and forming together the other pair of plates. A pin, z', is firmly attached to the plate a', and a'hole is made in the plate d, immediately under the pin z', through which hole the said pin z' protrudcs. This pin serves as a stop, lagainst which the edge of one-piece of cloth runs whilevbeing sewed. A pin, o, is also firmly attached to the plate b, and protrudes through a hole made directly under it in the plate c, said pin o serving as a stop against which the edge of the other piece of cloth movesA while being sewed. In securing these plates -or pairs of plates together, to form the guide, the end b of one pair is placed underneath the end a oi' the other pair, in such manner that the tongues A and B shall be opposite each other, the tongue A being upon one side of the guide and the tongue B upon the opposite side. When thus placed together, the pair composed of the plates a and d are firmly riveted or fastened together, and also to the plate b-of the other pair, so that the plates a, d, and b shall be firmly secured together near one end by the rivets ff or other` proper fastenings. The other pair, comprising the plates 6 and c, are firmly secured to each other near their ends by means of the rivets or fastenings e e. After both pairs of plates are thus rmly secured together, and to each other, the grooves or guides r s t u aremadc by striking a blow upon some blunt-edged instrument placed upon the plates. This makes a depression upon one side of the plates a and 6, which depression should be slight at one end and increasing in depth as it lengthens, and of course forms a ridge or protuberance upon the reverse side of said plates a and b. At the same time the depression is made in the plates a and b, the force of the blow makes a like depression or groove in the upper side of the plates d and c; the ridges or protuberances upon the under side of the plates a and b v fitting into the grooves made in the upper side of the plates d and c. The outer edges of the plates a eZ and b c are slightly bent or turned' apart to allow of a free and unobstructed movement of the cloth between them while being sewed together.

The operation of the guide is as follows: In attaching the guide to asewing-machine, the' side shown ln-A iig. becomes the under side; the pin n, having the screw-thread cut upon it, being inserted through an aper ture in' the sewing-machine table, the projection k oi' the piece h being inserted in another aperture in said table to prevent any lateral movement of the guide, and the nut m is then turned on firmly to the pi-n n, thus attaching the guide securely to the table. If, now, it is desired to sew two pieces of cloth together, bywhat is known as a lap-seam, one piece of cloth is inserted at the end w between the plates a and d, and `the other piece: is inserted at the end :u'botweeri the plates I1 and c, and both are drawn through towards the ends w rc". The two ridges or guides u r, between the plates b c and a (Z, commencing at the'points w @and extending diagonally across the plates, andrapproaehing each other, cause the two pieces of cloth thus placed between the plates to move inward, until one edge comes against the pin z', while the edge of the other piece comes against the pin o. The edges of the two 'pieces are now lapped one over the other, and as the feed of the machine -draws them through between the plates, the pinsz'and o prevent a further lapping of the two pieces, and the ridgesor guides s t causo the two pieces to move on in a straight and parallel direction. It is evident that the ridges and grooves might be formed by any other desirable method, but I prefer the method above described, as it is economical and practical. A

Having thus described my'invention, what Inclaim as new, and desire to secure by Letters Patent, is

A lap-seam guide for sewing-machines, composed of two pairs ofguiding-plates, said plates being arranged with reference to each other, and also ridged, grooved, and provided with stops z' and o, and the ear-piece v, all

constructed and operating substantially as and in tbe manner herein set forth.

` omis W. HORR.

Witnesses:

AUeUsfrUs CooLIDeE, T. A. CURTIS.

Images