US69960A - Improvement in soissoes and shears - Google Patents

Description

@uiten gisten @anni @ff-irrt IMPROVEMNT IN SOISSORS AND SHEARS.

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To v"aann'vnoiu IT MAY CCNCERN;

Be it known that I, WILLIAM B. BARNARD, ot Waterbury, in the county of New Haven, and State of Com neeticut, have invented certain new and useful Improvements in the Construction of Scissors, LampfTrimmers, Shears, 82e.; and I do hereby declare the following to bc a full end exact description thereof, reference' being had to the accompanying drawings, forming a part of this specification, and inwvhiclr- Figurcl is an elevation of a pair of-my improved shears spread -openfv Figure 4, a sectional Vview ofjoint between the blade and handle, before said joint is finished.

.Figure 5, a similar jointfas it' appears finished. i

Figure (i, planvicw of lower blade. y

Figures 7 and 8v, plans showing variations in forms ofthe end of the blade-tang and of rivets used.

Figure 9, elevation, illnstratingcheapcr form of shears, without rebate or recess at thejoint of blade and handle.

Siinilarletters indicate like parts in all of the figures.

My invention relates to improvements in the form and manner of connecting the steel cutting-blades of scissors, shears, or similar instruments, to cheap handles of malleable metal when held together byrivets, substantially as described in the Letters Patent granted to me on the 27th day of December, 1864, and reissued March 2T, 1856, and consists, first, in so shaping the ends ot the handles to receive the tangs of the blades, :1s that areccss shall not bc required in the end of the handle to receive the blade, but the blade maybe riveted iinrztediately upon Aits plane surface, thus greatly economizing the construction oft-he cheaper class of shears; sccnndfin forming an overlapping joint, to be used with or without the aforesaid bcvellcd or lap-joint; and

ythird, in the usel'of angular rivets to secure the blades to the handles of scissors, e.,and.in combination therev with, irrespective of any particular form ofjoint, but applicable to all.

In making these improvements, the handles A, for the scissors or shears, arc to be cast or forged of any suitable metal. 1 For neat-finished shears the handles are formed with a rebate, a, at theeudl thereof,having its inner e bcvellcd, as illustrated in figs. il and 5 of the drawings, and provided with a slight projection, m, along the inner edge of the rebate, upon the face of the handle. v At rivet, b, may be l'eftprejecting fr'om said rebate, but I contemplate also the useof independent rivets in this connection. The ends of the tangs e of the steel blades forthis form of shears or scissors, after being properly hardened and tempered, are each ground oil to a bevel, the counterpart of that formed in the rebate of the handle upon one side,and are also slightly bcvellcd on the outer-,edge of the other or upper side, and being pierced with a rivet-heldere thenv'ready to be united. This is aceonlplishedby laying the bcvellcd cnd of the tang c upon the bcvellcd edgee ofthe rebate, so that the rivet ZI shall project through the aperture `pierced in the tang c to receive it, and .therivet is then headed and the projection in hannncr'ed down overthe edge of the tang and into the recess ,left by the bevel en the upper edge of its end. f' An overlapping joint is thusformed along and over the edge of tlietang, which is neatly nished by grinding it over extcriorly, when the blade is finished, on the grindstone. As before stated, the tang e, when laid upon and in the bcvellcd rebate of the handle, may be secured by means ofan independent rivet, instead of a rivet cast with and made apart ofthe handle, as illustrated, and two or more rivets may be used if required.

' lhe'ends of the fangs may he of any desired shape, as shall'be found most advantageous. I prefer to cut them straight'aeross, as seen in figstl and 6; but, in such cases, it may be well to cut or round the corners, as that they may be partially cmhracedby the recess or rebate. They may, however, be cut in a curved shape, or in angular fornn'as illustratcd'in tier, 7, or diagonally, as, seen in fig. 8, and also be notched at pleasure. And I contemplato all forms of-ftangs to the blades, and of corresponding receptive recesses in the handles in making ythe overlapping joint, herein described, which are consistent therewith. In securing the handles tothe blades, byrivets, I have found an'economy of 'time and labor to form the e'nds of the handles with a straight plane giace, (s, fig. 9J upon whichto secure thetang, without recess or rebate to receive or embrace it; the shank of the handle, between this plano end s and the bow being so bent as to bring the bows together neatly in the same plane when the two divisions of the shears are united, as illustrated in iig. 9. As the end of the tang, in this case, is in no nrannerheld or prevented from turning or working loose by any peculiarity in the formation of the handle, I .prefer to makevuse of square or otherwise angular rivets o b for uniting the two. I contemplate,

also, the use of such angular rivets in the combination of the blades with the handles of shears, whatever may be the form of the joint between them, but especially in those cases where but n. single rivet may be advantageously used.

Hoving thus fully described my invention, what I claim therein as new` ns an improvement upon my shears patented December 27, 1864, and desire to secure by Letters Potent, is-

1. The combination ofthe cutting-blades of scissors, shears, or lamptrimmers, with suitable handles formed without rebates or recesses to receive the blades, but provided with projecting homogeneous rivets to secure the same, substantially in the manner v:md for the purpose herein set forth.

2. I claim, also, overlapping the ends of the tang of a shear-blade with the inner edge of a. rebate formed to receive it in the cnil of :t suitable handle therefor, substantially in the manner and for the purpose herein net forth.

Witness my hnnd this 5th day of October, A. D.,1866.

WM. B. BARNARD.

Witnesses:

S. N. KnLLono, N. DHH-:nix

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