US137966A

US137966A - Improvement in modes of forming turned seams

Info

Publication number: US137966A
Authority: US
Publication date: 1873-04-15
Anticipated expiration: 1890-04-15

Description

S. W. SHUREY. Mode of Forming Turned. Seams.

No. 137,966. Patented A rmwsm.

M/p'lne5583. i Inventor:

AM. PIIOTU'UT/MGR/IPIIIC 00. N H OSBORNE PROCESS] UNITED STATES PAT E N QrFIoE.

SAMUEL W. SHOREY, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN MODES OF FORMING TURNED SEAMS.

Specification forming part of Letters Patent No. 137,966, dated April 15, 1873; application filed March 5, 1873:

To all whom it may concern.-

Be it known that I, SAMUEL W. SHOREY', of Boston, in the county of Suffolk and State of Massachusetts, have invented an Improve ment in Forming Turned Seams; andIdo hereby declare that the following, 'taken in connection with the drawing which accompanies and forms part of this specification, is a description of my invention sufficient to enable those skilled in the art to practice it.

In the formation of what are known as turned seams, (in making boot legs,) in contradistinction to lapped seams, the back and front pieces of the leg are laid one upon the other, the two outer faces in contact, and the adjacent outwardly-facing edges are then united by sewing, after which the leg is turned, to bring it right side out, and the seam is pressed down to make it flat on the outer side. A welt is usually stitched be. tween the edges, this welt being trimmed at the outer side to impart a proper finish. These seams, being made with thread, and having to undergo severe strain in the turning, pressing, and finishing operations, are liable to rip, and the thread is apt to rot. To make a practically-indestructible seam of this kind, I first unite the edges by wire or wire-fastenings, and then turn the edges upon the wire, pressing them down with force sufficient not only to flatten the seam, but to force the inner edges laterally over the wire, so as to embed, or partially embed, the outer or presented portions thereof, the nature of the seam enabling a much greater pressure to be used than upon seams constructed with thread, so that heavy boots, in which a lapped seam is generally necessary, may be constructed with a turned and welted scam, in which the parts will be more firmly united, and the seam of better shape than is possible when the thread is used for such a seam.

The drawing represents a section (enlarged) of my improved turned seam.

a 1) denote the two parts to be united c, a

welt-strip, which may be placed between the edges. These edges being laid together, they are united by metal fastenings, which are formed of wire staples, such as are shown in my patent, No. 131,308, which staples may be made and driven with a machine like what is shown in my patent dated February 25, 1873, the points of the staples being twisted together for strength. The parts having been thus united, the leg is drawn over an arm, and the edges are rubbed or hammered down upon the fastenings, the rubbing or hammering operation flattening the seam. at both sides of the fastenings.

The invention has been particularly described in connection with side-seamin g bootlegs; but it may, of course, be used for the union of any edges which are to be or may be united by a turned seam.