Dental appliance / [Israel Stewart Kirkwood].

Kirkwood, Israel Stewart.

Date:: 1898

Credit: Dental appliance / [Israel Stewart Kirkwood]. Source: Wellcome Collection.

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$Kirkwood's Dental Appliance. tionallv emptied. This section is united to the second section F2 by a bayonet joint fL, or any other suitable and easily opened coupling, the second section is closed at both ends, and serves as a receptacle for fresh and clean sterilized cotton, which, in case one end is not made removable for the purpose, maj be introduced through the circular opening F* in the side of the said receptacle. Ihe base of 6 this opening merges into a contracted slot f2 which terminates m a convexgence f, the purpose of this slot being to limit and measure the quantity of cotton diawn out by the nippers, which after grasping a pinch of cotton are, in order to strip off any superfluity, drawn through the upper and wider part of the slot so long as the cotton is closely packed, and through the converging paid when it is loose 10 and but little remains. The first or waste section of the box has a lateral opening i4, made, for uniformity of appearance, of about the size and shape of the circular opening in the fresh cotton receptacle, and m line therewith, this is intended for the intro¬ duction of waste wads into the receptacle, and for the purpose of stripping these 15 wads from the nippers it terminates at its base in a slot or slots f '1 having con¬ verging sides between which the nippers are pressed until a purchase is contained on the wad; when the simple act of withdrawal strips the wad. One slot will work well, but as a moist and oftentimes foul wad will frequently stick in the slot, it is better to have a plurality. 20 At the rear of the box is attached a crane-arm f'° by which it may be swung from the stand and moved out of the way of other parts as occasion may require, or may be supported on the table, either by resting the arm directly on the table, or stepping it in a boss which may be secured either to the arm or to the table, or to neither fixedly 25 30 40 Above the burner is a hot water tank G having two crane-arms g, g1, by which it is supported from two of the sockets C, and at the same time readily removable, or displacable from over the burner. A crucible H, can be hung by hooks h, or otherwise, into this tank, to soften amalgam, gutta percha or alloy- Water can be quickly warmed in this tank for syringing purposes, or carried up to a boiling heat for sterilizing. K is a sponge-cup swung by crane-arm k to one of the sockets C, and having lateral openings k1, and a cap K1 secured by bayonet joint t*2 so as to be removable for the introductions of sponge, the purpose of this cup being to dampen and cool the drills, burrs, grinding disks and other instruments, and clean them of 3,5 deleterious matter. F or this purpose it has a plurality of lateral openings 1c3 and may have one or more, D, in the cap, as shown. Above the sponge cup is the tray L, for gutta percha, alloy or amalgams, hung by crane-arm l so as to be removable for cleaning or disinfecting. This tray has ribs or elevations I1, dividing its surface into a series of pockets or troughs which preferably run longitudinally and the purpose of which is to keep each block or pellet of fresh, plastic material separate from; those adjacent. the troughs terminate near the edges of the tray and against the outer ends l-1 of the troughs the points of the instruments discarded or for the moment out of use may be rested, the handles or shanks being supported upon a 111010 eievated lack L1 sleeved or otherwise secured upon the post, to swing about it to maintain its relative position to the tray. Beneath the sponge cup is the tray M for the reception of annealing cr0ld, hung by crane-arm m from one of the above mentioned sockets sleeved upon the standard. This tray is also provided with troughs or pockets m\ similar to those appertaining jn to the tray first described, for the purpose of holding the pellets or cylinders or other forms of filling material separate one from the other, and to divide off the remnants or fags from the fresh material and especially to prevent ihe material from annealing by contact when warmed or heated over the burner. As it is desirable to heat or warm the gold before using in order that it may more readily anneal this tray is located but a short distance above the gas burner, so that bv swinging one or both the burner may be brought beneath it, and the flame so 45 55$

Dental appliance / [Israel Stewart Kirkwood].

Licence and re-use

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