US80031A - Improved cutting-nippers - Google Patents

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@geiten tetes @Eaten-t @fitta Letters Potent No. 80,031, elated July '14, 1868;

-f IMPROVE) CUTTING-Nurses.

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To ALL WHOM 1T MM'CONGERN;

Be` it known that I, NATHA TOMPSON, a. citizen of the United States, at present residing in the city of i- Brooklyn, in the State ofNew-Yo'rk, have invented a new and-useful Cutting-Nippersjand that the following, taken nconnection with the drawings, isp-a fall, clear, and exact description thereof. l

In the drawingsf-v Figure 1 is a side elevation of'a nippers made according to therprin'ciples of my invention, the cutting- -jaws ofthe nippers being' nearly shut.= v

e Figure-2 is a side elevation with the' jaws open.

Figure is a front'elevfationof one jaw and handle, oir-'side olf the-nippcrs, showing 'parts of 4the other side,

in section.

, Figure 4 is a. t'pp view' of thcnippers, with portion of thehandlcs reuioved.-

I 'have been led vtothis invention by the' demand for a cutting-nippers of greatpowe'r, and yet contained in a. small'rcoinpuss, and without'unnec'essary complication, and my invention isl based upon the idea of' cuttingedges, as close as possible to the pivot of the nippers,'in connection with handles whose ends or portions that are-grasped are as far as possible from the same pivot, thus securing the greatest amount of leverage .in any givenlength of nippers. f p ,i A In the drawings, the cutting-edges of 'thenipper-s are shown'at a a.:* They may be forged` upon pieces of steel, which are dove-tailed into or otherwise secured to the sustainingjws, as shown in-i'gs. v1 and 2, or they may be welded to thel'jaws, or the jaws handles, and allmay he forged of one piece of steehgencept the. sup- Vports hereafter described.' These lcutting-e'des are as close asA possibleftothe knuckle o'r hinge b, or they'may be brought'eveu closei to the pivot by dividing them into 4two ledges for each janv, andpermitting'thelthuckles tovproject up between the two edges.. lThere maybe one or more knuckles'to each jaw, but I have found one, as-'shown in the-drawings, to be suiiicijjnt, 'and the knucvklesjand jaws arerrsecured together by and turn jupon The close proximity of tliejans to the `pivot preventsf any-cutting of \vire over the knuckles, aud'only those parts ot" the cutting-edges which areroutsidc of theiinucklesare practically effective'. By outside,'-I mean the parts .between c: and y, iig. 4; As the distance 'from the cutting-edges to the pivotl is so small, and-the dis tance from the same pivot tol the graspof the handles, or those parte thereof embraced by the hand, is sogreat, the cutting' porter of` the edges is remarkable, and, as it is necessary to cut on one side of the centre of the edges, there is, Wh'enthe nippors are cutting, Aa stron-tendency to twist the knuckles apart, or tear the knucklesV of the sustaining-jzri'sor otherwise render thehippers unserviceable; in fact, anippe'rs propontionedas mine,- wonldrbealmost useless, unless this dilcultynvere obviated.v l -I I have therefore applied to the jaws two supporting-pieces d d, one toe'ach jaw, extending from Athe handle to the jaw, audI prefer to -ri'vet or screwt-hese sil'pports tothe handles, sometimes abutting their ends 4against v a ledge or Ybracket projecting from the handles, and at others depending nponA the rivets or screws alone. I preferto'attach the supports to the jaws by letting'theminto ,slotsor recesses (see dotted lines z) slotted out in the jaws, and, if necessary, rivet them fast. I findby practice that these supports remedy the 'dilculty, andenable nie to cut any wire within the power of the'nippers without-twisting or fracturing them. The jawsA are therefore connected Ito theihandles by a double connection, one pax-tof each connection being'embraced by theftwo parts appertaning'to the otherjaw,'(see, specially, iig. 4

Uponthe same principles herein described, other forms'of Vnippersmay he made, and I intend sometimes to make two sets oi`` knuckles and two pivots, one set at euch end ofthe cutting-edges, and with a support or connection from each handle to each knuckle. Under this construction there will be, 'as before, two connections from each handie to each-jaw, but in this case the cutting-edges will be'ine'ectiveatthe two ends thereof, and' effective at andabout the centre only. l v

This form is lnot-as good. as that described, except when the nippers are to'be-used for cutting shortfle'ngths efheavy wire. l

.I claim constructing cutting-flippers, so that the cutting-edges thereof shall be s'c'lo'se as possible to the knuckle Wheh surrounds the pivot on which the jaws' turn, or shall be even closer to the pivot, with theknuekle pt ojecting between the divided edges, as described, and so also that there sha-ll bea. double connection between thejaws and the-handles, onejpert of each connecton being embraced by. the parts of theother, in the manner substntially as herein described.

NATHAN THOMPSON. [1.. s.] Witnesses I' EZRA B. TUTTLE, ISAAC-z S. WATERS.

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