US104539A - Improvement in drawing-knives - Google Patents

Description

` i tof the knife-blade.

` p closing too far by means of shoulders or projections @anni @imita c CHARLES o. BART-0N, or

ROCHESTER-NEW YORK.

Letters Patent No. 104,539, dated Jane 2l, 1870.

l 1 IMPROVEMENT 1N DRAWING-KNIVES.

y dw- `'.lhe Schedule referred to in these Letters Patent and making part of the same Il, GHARLES C. BARTON, ofRochestcr, in thecounty of Monroe and State `of New York, have invented a certain new and useful Improvement; in the Construc- `tion of Drawing-Knives, of 'which the following is a specification. i

' My improvement relates to a drawing-knife patent `by J. H. AtwatelyJa-nuary 18, 1870, N o. 98,903.

` The novelty consists in my improved construction of the devices, so as to chcapen and facilitate their manufacture, as hereinafter described. In the patent above `referred to, the knife-blade is sharpened in different 'bevels jon opposite edges, and

Vthe handles are made reversible to opposite sides, by

hinging them to bearings on the ends or prolongations `The handlesare prevented from formed fromthe knifematerial, which serve as stops.r Ihese shoulders or stops must be formed by hand labor, by filing, and, the material being of steel-tem pered metal, the operation is very laborious and ex-l pensive.

It is the object of my invent-ion to lessen the labor and cheapen their construction.`

In the drawingi Figure lis a sidel view of "a drawing-knife of my improved construction, and

Figure 2, a perspective view of one end ot' the knife ,and of the hinge-'bearing for jointingthe handles to the blade.

A indicates the knife-blade, and` .B B are the handles.

The blade is provided with plain extended portions or arms b b, on opposite ends, to which are jointed the bearings C of the handles.

I make the bearings O of malleableor cast metal and substantially of the form represented in fig. 2, the same being provided with the stems or Shanks e e, for securing them to the handles, and t'he stops or shoulders g y, for preventing the handles from closing too By my improved construction it will be seen that the knife-blade is formed with the plain extended portions to which ,the handles are jointed, and the shoulders or stops g g, for preventing the handles from closing too far, are cast upon the hinged bearings C, and `thus the -labor of forming them by hand from the steel-tempered metal of the blade is entirely dispensed with.

By this means I am enabled to manufacture the articles with much greater facility and less expense, s0 as to oler them to the public at a considerable reduction of .the usual market price. i

I hereby disclaim the invention of John H. Atwater for reversible drawing-lmite, patented January 18, 1870; but

What I do claim as new, and desire to secure by Letters Patent, isp y The blade A, iliade with the plane extended portions b b, in combination with the handles and hinged bear` ings C C, when the latter have the shoulders or stops g g cast uponthem, substantially as and for the purposes set forth.

In testimony whereof-I hereunto sign my name in the presence of two subscribing witnesses. c

, u l GHAS. C. BARTON.

Witnesses l J. A. Devis, WM.'AUGS. WATERS.

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