US128876A

US128876A - Improvement in hemmers

Info

Publication number: US128876A
Authority: US
Publication date: 1872-07-09
Anticipated expiration: 1889-07-09

Description

H. M. HALL.

Hemmer.

No. 128,876. Patented Jul 9,1872.

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Wimasscas, I WM (2:5 WQw TNITED STATES HENRY M. HALL, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN HEMMERS.

Specification forming part of Letters Patent No. 128,876, dated July 9, 1872.

To all whom it may concern:

Be it known that I, HENRY MHALL, of Philadelphia, in the county of Philadelphia and in the State of Pennsylvania, have invented certain new and useful Improvements in Hemmer-Attachments for Sewing Machines; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing, making a part of this specification, in which- Figure 1 is a plan view of the upper side of my improved hemmer, Figs. 2.and 3 are a side and a front elevation, respectively, of the same. Fig. 4 is a plan view of said hemmer, with its tongue constructed of or from wire instead of sheet metal. Figs. 5 and 6 are elevations of opposite sides of said hemmer. Fig. 7 is a front elevation of the same; and Fig. 8 is a plan view of the body of the hemmer as cut from a sheet of metal and before being bent.

Letters of like name and kind refer to like parts in each of the figures.

The design of my invention is to increase the simplicity and efiiciency of hemming at;

tachments; and it consists in the device as a new article of manufacture, substantially as and for the purpose hereinafter specified.

The body of the device, shown in the annexed drawing, is constructed of or from a strip of elastic sheet metal, having the shape, before bending, seen in Fig. 8, which strip is doubled together, as shown in Figs. 2, 5, and 6, so as to form a flattened, tapering scroll, A, while one end of said strip is curved 'so as to form a smaller scroll, B, and gauge for the edge of the cloth. From the peculiar shape of the plate the scroll B ends at a point about one-half the distance from its commencement to the opposite side of the larger scroll .A, and acts as a gauge for the edge of the fabric, and at the proper point allows the double or turned edge to come in contact with the main portion of the hem. A tongue, 0, made of a fiat piece of sheet metal, in the form shown, is secured to crupon the upper side of the scroll B, and extending partially across the scroll -A supports the fabric whose edge is being turned, while the inclined edge of the outer scroll A bears on the fabric with a yielding pressure, and acts to deflect it well into the same, and also adapts itself to the various thicknesses of material.

In Figs. 4 to 7 is shown a modification of my device, in which the tongue 0 is formed of or.

from wire instead of from sheet metal, but as the exterior shape of each is the same their operations are alike.

The advantages possessed by this device are as follows: First, as the scroll is made of elastic metal, but little friction is caused by the passage of the cloth through the body of the hemmer, by which means all dragging is prevented, more especially when seams must pass through the device. Second, the lower side of the scroll rests upon the cloth and holds the same back in a line with the feed, so as to cause its edge to fillthehemmer with but slight assistance from the operator, and also stretches said cloth so as to cause any fullness of the edge I to be taken up. Third, by ending the scroll at about one-half the distance through the hemmer the goods are allowed to flat out under the tongue, so as to enable the device to act as a feller to the edge of the goods. Fourth, the hemmer is so simple in construction and so easily made as to enable it to be furnished at a comparatively small cost.

Having thus fully set forth the nature and merits of my invention, what I claim as new The hemmer herein described, constructed of or from a plate of elastic metal (of the form shown) into scrolls A and B, and provided with a tongue, 0 all of said parts being con structed and combined as and for the purpose specified.

In testimony that I claim the foregoing I have hereunto set my hand this 15th day of May, 1872.

HENRY M. HALL.

Witnesses:

CHAS. JENNINGS, M. F. OSLER.