US529513A

US529513A - Shear-bow

Info

Publication number: US529513A
Authority: US
Publication date: 1894-11-20
Anticipated expiration: 1911-11-20

Description

(No Model.)-

D. 8a D. C. WHEELER.

` SHEAR Bow. No. 529,513. Patented N 0v..20, 1894.

WITNESSES ;7a INVENTORS Mg. 05%

UN ITED STATES Parnivr rricn,

DVIGHT W'HEELER A YD DAVID O. VHEELER, OF BRIDGEPORT, CONNECTICUT.

SHEAR-BOW.

SPECIFICATION forming part of Letters Patent No. 529,513, dated November 20, 1894. Applicationfiled March 31,1894. Serial No. 505,855. (No model.)

T0 all whom it 71m1/ cmwern:

Be it known that we, DWIGHT \VHEELER and DAVID C. WHEELER, citizens of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Shear-Bows; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to the manufacture of soissors and shears and has for its object to provide the bows of scissors and shears with a lining of leather, felt, cloth or any suitable material, which will give to the shears a neat and attractive finish, will make them pleasant to use as it will protect the fingers against chafing and which will lessen the cost of production as it will dispense with the Operations of finishing and plating the inner sides of the bows.

With these ends in view our invention consists in an improved shear bow and in the method of making the same which we will now describe referring by numbers to the accompanying drawings forming part of this specification, in which- Figure 1 is an elevation of a pair of shears embodying our novel invention, a portion of the lining being broken away to show the rough surface underneath; Figs. 2 and 3, sections of one of the bows and the fiexible die by which the lining is attached in place, Fig. 2 showing the die inserted in the bow but remaining in its normal position and Fig. 3 showing the die compressed so as to clamp the lining firmly in position in the bow, and Figs. 4 and 5 are views similar to Fig. 3 show` ing the die made in two parts.

1 denotes the bows of shears the inner sides of which are left unfinished as at 2, and 3 denotes a lining of any suitable material for example leather, felt or cloth which is attached to the inner sides of the bows in the manner which we will now describe. The inner sides of the bows are left rough just as they come from the molds in casting so that the expense of finishing the inner sides of the bows and afterward of japanning or plating them is avoided. The inner sides of the bows are then prepared by placing thereon a solution of adhesive gu ms, the solution used being somewhat in the nature of a varnish, shellac predomiuating. The special compound of gums is not of the essence of our invention, it being simply necessary that the solution be strongly adhesive and capable of being firmly set by the application of heat so as to attac-h the linings in place with perfect firmness, making it practically impossible to remove them in ordinary use. The lining denoted by 3 is cut in the form of a ring and the ends secured together by sewing or stitching so as to make the ring of required size. The bow and the ring are then placed over an expanding or tlexible die denoted by 4. This die is in fact a block of rubber which is preferably provided with a groove 5 in which the bow and ring are loosely seated, the die being ordinarily shaped substantially as shown in Fig. 2, diagonally opposite ends being cut away sufficiently so that the die may be readily inserted, one end being first placed in position and then the other. After placing the die in position it is compressed as in Figs. 8, 4, and 5 so as to press the lining firmly into place on the innerside and edges of the bow in which position, i. e., the position shown in Figs. 3, Li; and 5, the die is clamped by any suitable means. The die, lining and bow are then placed in an oven and baked. The exact heat to which the oven must be raised or the exact length of time taken in the baking are not of the essence of our invention and may be varied to suit the special adhesive com-` pound used or the judgment of the manufacturer. As a perfectly practical temperature and time we would say raise the temperature to 300 Fahrenheit and allow the bows to bake for thirty minutes, it being simply necessary that the heat be sufficient to thoroughly melt the guins and that it be continued for a sufficient length of time to dry out the moisture and cause thorough adhesion to the rough metal of the bow. After the baking operation the edges of the linings are ti'immed in any suitable man'x'ner which finishes them ready fot' u'se.

Having thus described our invent'ion, we e1aim The method of lining sheai' bows herein described the same eonsisting in appiying a solution of adhesive gums to the roug'fh inner side of the bow, prepai'ing the lining in the form of a ring, then placing the bow and the ring over an expanding die, then'expanding the die so that the lining will conform to the Outline of the bow in which position it is retained in any suitable tnnne-i', and finally bking' the Iin'ing tot'he' how' while it is heid t 5 in position by the die. i

In testimonywhereof we affix oursignatures in presenee of two witnesses.

DWIGHT WHEELER. DAVID O. WHEELER.

Witnesses:

JOHN T. BURNS, ALBERT E. Town.