US1018712A - Dentist's anvil. - Google Patents

Description

L. F. KOEHLER.

DENTISTS ANVIL.

APPLICATION FILED 1211.3, 1911.

1,018,712, l l Patented Feb. 27, 1912.

1 MWA COLUMBIA PLANDIIRAPU C0..WASH|NGTON, D. i:

INVENTOR LOUIS F. KOEHLER, OF CHICAGO, ILLINOIS.

DENTISTS ANVIL.

Specication of Letters Patent.

Application iled April 3, 1911.

Patented Feb. 27, 1912.

Serial No. 618,513.

To all whom it may concern:

Be it known that I, Louis F. KonHLnR, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Dentists Anvils; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification. Y

This invention relates to a novel dentists anvil and the invention consists in the matters hereinafter set forth and more particularly pointed out in the appended claims.

Among the objects of the invention is to provide an anvil comprising a body having a plurality of recessed sides to receive suitable material formed or molded therein to constitute renewable anvil faces, and a further object of the invention is to provide an anvil body for this` purpose made up of separately formed parts with means for holding them in fixed relation, which, when assembled produce the recesses to receive the material to constitute the anvil faces.

The anvil faces are preferably formed of a suitable relatively soft material, such as is required for dental and like work, which has a lower fusing point than the material constituting the body or support of the anvil, whereby such material may be poured in a molten state into and formed in the recesses in the multi-faced body and may be, after the anvil faces are worn, melted therefrom without injury to the material constituting the body or support of the anvil. For instance, the anvil faces may be formed of lead while the anvil frame or support may be made up of brass or iron or steel eitherV cast or formed of metal plates suitably secured together.

In the drawings,-Figure 1 is a plan view, partially broken away, f an anvil embodying my invention. Fig. 2 is a cross section on the line 2-2 of Fig. 1. Fig. 3 is a cross section on the line 3 3 of Fig. 1. Figs. 4, 5 and 6 are perspective views of the three pairs of members constituting the siX parts of which the anvil frame or shell herein shown is made. l

In the embodiment shown 1n the drawings, the frame of the anvil comprises a hollow shell that is made up of flat plates suitably secured together to constitute a six sided figure, and the hollow shell-like frame is provided therein with means which eX- tend through the plates to rigidly fasten the plates together. Said plates are so formed and so positioned on each other as to form at each side of the siX sides of the body a recess orcavity to receive a body of suitably soft material to constitute the anvil face.

In a preferred form of the invention, as herein shown, there are six main plates 10, 11 and 12, arranged in pairs, and the plates of each pair are duplicates. The plates 10 are square and are provided on their outer faces with rectangularly arranged strips or flanges 14 to form the walls of pockets or recesses 15 at the outer faces of said plates to receive bodies 16 of' suitably soft material which are flush with the outer edges of the strips or flanges 14 and constitute anvil faces. The said flanges 14 may be formed of a short section of tubing, or may be made up of separate strips suitably fitted together. Applied to the inner faces of the plates 10 are oblong, rectangular, thin plates 17 which may be attached to or loosely fitted thereon. The plates 10 and 17 are provided with central apertures 18 through which extend fastening devices, as will hereinafter more fully appear.

The plates 11 are of oblong, rectangular shape (Fig. 5), the longer dimension of the plates being equal to the dimension of the plates 10, while their shorter dimension is less than the dimension of the plates 10 to an extent equal to the combined thicknesses of the two plates 10 and the depth of the strips or flanges 14. Applied to the outer sides of the plates 12 in the direction of their shorter lengths, are two parallel strips 19, 19 each strip being of a length equal to the shorter dimension of the plate to which it is applied, and of the same depth as the strips or flanges 14 of the plates 10. Applied to the inner faces of said plates 12 are square plates 21 whose dimension is equal to the shorter dimension of the plates 12. The said plates 21 may be attached to or loosely applied to the plates 12 and they are provided centrally thereof with the apertures 22.

The plates 12 are plain, flat plates 6) and, as herein shown, are square and of a dimension equal to the shorter dimension of the plates 11. They are provided centrally thereof with apertures 25.

In assembling the frame thus made up of the three pairs of plates 10, 11 and 12 described, the identical members of each pair are arranged on opposite sides of the shelllile frame. Thus, in the posit-ion of the parts shown in Figs. 1, 2 and 3 of the drawings, the plates 10, 10 are arranged one at the top and the other at the bottom of the anvil frame, with the recesses or pockets 15 thereof opening upwardly and downwardly. The plates 1l are fitted at their upper and lower edges against the top and bottom plates 10, 10 and extend at their end margins flush with the opposite side margins of said upper and lower plates, as shown in Figs. 1 and 3, with the upper and lower marginal parts of the inner or shoulder plates 21 thereof bearing against the edges of thel shoulder plates 17 of the top and bot-tom plates. The plates 12 fit snugly between the upper and lower plates 10 and between the lateral plates 11, 11 and bear at their marginal portions against the edges of the centering or shoulder plates 17, 17 and 21, 2l of the plates 10 and 11, respectively. The plates 17 and 21 constitute centering or shoulder plates to maintain the plates in their proper relative positions when assembled so as to hold the shell-like frame formed thereby rigidly in form.

The strips or flanges 19 of the plates 1l constitute opposite side walls of rectangular chambers or recesses 23 to receive an anvil body 24, the other two opposite sides or walls of which comprise the adjacent extended margins of the plates 10, as best shown in Figs. 1 and 3. At the sides of the anvil, shell-like body at which are located the plain plates 12 are formed recesses or pockets 26 that are bounded on two opposite sides thereof by the margins of the plates 10, and at the other two opposite sides by the end inargins of the plates 11, the recesses 26 being filled by bodies 27 of suitably soft material to constitute two opposite faces of the anvil.

Any suitable means may be employed for locking or binding the frame plates together in a manner to provide the multi-recessed body to receive the material to constitute the anvil faces 16, 24 and 27. A practical and preferable means of locking the plates together, when the body is so made up of such plates as herein shown, is made as follows Contained within the hollow interior portion of the frame is an anchoring device consisting of three pairs of studs 23, with the studs of each pair extending in opposite directions and with all the studs fiXedly connected at a central point 29. The outer ends of said studs are screw-threaded, as at 30, and the screw-threaded ends of said studs extend through the central apertures of the portions thereof, and the screw-threaded' ends of the studs are provided with nuts 32 by which to clamp or confine the frame members against said shoulders 31, and the interfitting shouldered plates of the frame members.

After the frame, made up of the members thus described, has been assembled and the nuts 32- have been screw-threaded onto the screw-threaded ends 30 of the studs to rigidly connect or clamp the frame members together, the recesses or pockets 15, 23 and 26 are filled with the material to constitute the anvil faces 16, 24: and 27, said material being preferably poured into said recesses or pockets in a molten state. The outer faces of said anvil bodies are finished flush with the strips or flanges which constitute the walls of the pockets or recesses.

There is thus provided a rigid anvil body that is constructed to resist the pounding stresses or strains which may be imposed thereon in use, and provided on all of its sides with recesses to receive the material to constitute the anvil faces, thereby producing a multi-face anvil in which the anvil faces are readily renewable when worn.

The strips 14 and 19 are preferably soldered to the side members 10 and 11 when the lat-ter have the form of plates, and may be preliminarily attached to the plates by the pins shown in Figs. 2 and 3 and while the soldering operation is being effected. In practice the nuts 32 will be made somewhat shorter than shown to increase the durability of the anvil faces. The undercut form of said nuts provides an interlocking connection which aids to hold in place the relatively soft bodies in which are formed the anvil faces. i

It will be understood that, while the illustrated embodiment of my invention has been described with considerable particularity, the Invention is not limited to the particular manner in which the multi-recessed frame is constructed, nor to the proportions of the members thereof, but contemplates other analogous means for producing the plurality of recesses .to receive the bodies of inaterial to constitute the multi-faced anvil. The construction herein shown, however, is one which may be readily and economically constructed and assembled, and one which constitutes, when assembled, a frame of eX- ceedingly rigid construction.

I claim as my invention l. An anvil for the purpose set forth, comprising a body composed of a plurality of plates fitted together at their edges, and formed with flanged members to constitute comprising a multi-sided shell composed of portions, certain of the plates being formed at the several sides of the body pockets or recesses, locking means for rigidly locking said plates together in assembled relation, and bodies of relatively soft material formed in said recesses to constitute anvil faces.

2. An anvil for the purpose set forth, comprising a body composed of a plurality of plates fitted together at their edges, and formed with flanged members and extensions to constitute at the several sides of the body pockets or recesses, locking means for rigidly locking said plates together in assembled relation, and bodies of relat-ively soft material formed in said recesses to constitute anvil faces, said locking means extending partially into said recesses, and the anvil face forming material being formd over the parts of the locking means that extend into said recesses.

3. An anvil for the purpose set forth comprising a frame consisting of a plurality of plates fitted together at their mar ginal portions to constitute a multisided, hollow body, and formed with flanges and extensions at the several sides of the body to constitute pockets or recesses, locking means Within the hollow body formed with a plurality of studs which extend through openings in said plates and are screW- threaded at their outer ends and provided outside the plates and Within said recesses With nuts and bodies of relatively soft Inaterial formed in said recesses to constitute a plurality of anvil faces.

l. An anvil for the purpose set forth flat plates fitted together at their marginal at their inner sides With shoulders against Which the other plates bear, locking means Within the shell having 4screw-threaded members Which extend through the plates and are provided with nuts to hold the plates engaged with the margins and shoulders of conjoined plates, certain of the plates being provided on their outer sides with flanged members and others of the plates extending beyond adjoining plates to constitute With said flanged members pockets or recesses on the several sides of the shell, and bodies of relatively soft material formed or molded in said recesses, the outer side of which constitute anvil faces.

5. An anvil for the purpose set forth comprising a six-sided shell composed of six plates, to wit, a pair of oppositely disposed rectangular plates provided on their outer sides With strips or flanges to constitute outwardly opening recesses, a second pair of oppositely disposed, oblong, rectangular plates provided on their outer sides With tWo flanges or strips which cooperate With the marginal portions of the first mentioned pair to constitute outwardly opening recesses and a third pair of oppositely disposed, rect-angular plates tted to the first and second pairs of plates to complete the shell, and arranged a dist-ance inside the margins of the second and third pairs of plates, whereby the marginal portions of the first and second pair of plates constitute Walls which surround recesses at said third pair of plates, means for looking Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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