US122254A - Improvement in dental forceps - Google Patents

Description

P.N.JACOBUS.

DntalForceps.

PatenedIDe. 26, 1871..

i ATES PATENT OFFICE.

IMPROVEMENT IN DENTAL FORCEPS.

To all whom -it may concern:

Be it known that I, PETER N. JAcoBUs, of Montague, in the county of' Sussex and State of N ew Jersey, have invented a new and useful Improvement in Dental Forceps 5 and I do hereby declare that the followingI is a full, clear, and exact description of the same, reference being -had to the accompanying drawing forming part of' this specification, and in which- Figure 1 represents a side view of my improved forceps in the hand of the operator ready for use, and Fig. 2 a view in perspective of said instrument.

Similarletters of reference indicate corresponding parts.

My improvement in forceps for dentists use consists in a cross-handle to one or the main jaw,

constructed to lit the palm of' the hand, and designed to be held in position by the thumb and two lesser iingers, while the other fingers of the hand are employed in holding or operating the. other jaw of the instrument, and is combined with a peculiar construction of' the said lesser jaw, which is formed, or, providing' it with a cross-piece and fin ger-guard, arranged to receive the two first fingers in between them. A dental forceps thus constructed or provided possesses many advantages over the forceps in ordinary use, being more easily or generally adaptable to different kinds of' work, and capable of being manipulated with greater convenience and power.

The forceps represented in the drawing is crooked at its forward portion to adapt itto operating on the front part of the mouth; but it may be otherwise--thatis, laterally crooked-t0 adapt it to other parts of the mouth.

A represents the main jaw, and B the secondary one. The pivot b of' the joint is arranged close to the forward portion of the instrument, whereby a powerful leverage is obtained, and the points or lipsc c may in all cases be within the mouth and handles of' the forceps, out ofthe -way of the teeth and opposite the latter; also,

allowing of an advantageous moyement of the jaws relatively to each other when opening' and closing the main jaw, A being slotted to allow of the other jaw B fitting at its shank portion 4within it. The points or lips c c of' the jaws may be fitted for bicuspids, molars, or wisdom teeth, foreither side and either ja'w of the mouth, by

Specification forming part of Letters Patent No. 122,254, dated December 26, 1871.

suitably changing the hold of the instrument ip the band, thus giving a universality to the in strument-that is, as far as the size of the teeth will adinit-consequentl y dispensing with a multiplicity of' similar instruments. The points or lips c c, however, may be made to nicely lit on any particular tooth, fang, or alveolar to be rc moved in any part of the mouth, and either. be made sharp for cutting through the alveolar 0r removing a part of' it, or be file-cut to give a firm hold on the tooth, or be smooth for sliding readily on decayed fangs. is constructed or provided with a cross-handle,

G, constructed so as to lit the palm ofthe hand, and serving mainly to force the instrument up onto the tooth, fang, or other part to be removed; also, for drawing the instrument down and for giving it the inward and outward m0- tion, and rotating or other action usual in loosening a tooth. The other jaw B is constructed with a cross-piece, D, and linger-guard E, to rc-` ceive between them the first two lingers, while the cross-handle C is grasped in the palm of the hand and held in place by the thumb and two lesser fingers. This construction gives a powerful gripe to hohl on to the tooth, as well as a. powerful hold to draw the tooth, andthe fin gerguard E provides bearings for the outward pressure of' the lingers to open the jaws and to adjust them' onto the tooth, 01 to prevent their closing while forcing them onto the tooth 5 and the contraction or shutting ofthe same fingers, by pressin g on the cross-piece D, combined with tlm gripe of' the handle C in the palm of the hand, effects `\the closingofthe jaws. y

A forceps constructed as described is easily entered within the mouth, and admits of the largest possible command over the instrument.

Vhat is here claimed, and desired to be secured by Letters Patent, is- V 1. The combination of' thecross-piece l) with the lesser jaw.B and main jaw A having a crosshandle, C, essentially as described.

2. The combination ofthe iinger-guard E with the cross-piece D of the jaw B, and cross-handle O of the jaw A, substantially as specified.

' PETER N. JACOBUS. Vitnessesz' JASON K. C. FULLER,

Go'rTFRiED WIELAND. (46) The'one or main jaw A

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