US727811A - Dental swaging-machine. - Google Patents

Description

Nrrn TATES Patented May 12, 1903.

FFIGE.

DENTAL SWAGlNG-MACHIN E.

sPEcIFIeA'rIoN forming part r Letters Patent No. 727,811, dated May 12, 1903.

Application filed Maroh2 g1902. Serial No. 99.789. on model.)

To all whom it may concern:

Beit known that I, CHAPIN F. LAUDERDALE, a citizen of the United States, residing at Milwauiree, in the county of Milwaukee and State of Wisconsin, have invented a new and usefill-Dental Swaging Device, of which the following is a specification.

This invention relates to certain improvements indevices of that class employed for swaging or shaping sheet metal inthe formation of crowns and analogous articles indental work, and has for its principal object to provide a simple, efficient, and inexpensive swaging device in which the various members may be readily separated, the lower die member being arranged in the form of a readily-removable cup or ring, which will permit of the ready interchange of dies or the insertion of artificial teeth.

A further object is to so construct the striking member or thenpper die member, to which pressure or other force is applied, as toprevent the same from rebounding and displacing the metallic plate being swaged.

With these and other objects in view, the invention consists irrthe novel construction and arrangement of, parts-hereinafter described, illustrated in the accompanying drawings, and particularly pointed out in'the appended-claims. I

In the drawings, Figure 1 is a sectional ele- .-vation of a swaging device constructed in accordance witlr my invention, illustrating the employment of a cup-like die-receiving body having a teo'thweceiving surface or bed of wax-likematerial. Eig. 2 is a perspective view of sahl cup membendetached. Fig. 3 is a View similar to Fig. 1, illustrating the swa ing device as. employed in connection with a dieformed of cast metal. Fig. 4: is a detail perspective view of sifclicast-metal die and is holding-ring. Fig. 5 is a sectional view of the die-holding ring, illustrating the method of forming a matrix, a tooth-form being placed on a fiat surface at a pointwithin the ring and the latter then filled with fusible material.

Fig. 6 is a detached perspective view of the removable plunger or striking member.

Similar numerals of reference are employed to indicate corresponding parts throughout the several figures of the drawings. a 10 indicates a cylinder open at both ends ing sufiiciently close to prevent any lateral movement of the die member, but permitting the separation of the cylinder from the die member when it is necessary to adjust a piece of metal to be swaged or to change the die or matrix.

The die member, as shown in Figs. 1 and 2, is in the form of a cup having a recessed upper surface in which is placed a wax-like body 12, the material employed being hard at ordinary temperature and readily softened by the application of heat, so that it may receive an impression of a tooth-surface and act as a matrix for the swaging of a plate, or it may be employed as a retaining medium in which to embed artificial teeth for the purpose of adapting metal to the surface thereof,

the die or matrix being readily changed when necessary.

The lower die member maybe provized with a. ring 11, asindicated in Figs. 3, 4, nd

5, said ring acting as a support for a;'body.-

12of readily-fusible metal, in which a-jdie'or matrix may be formed in any suitable man 1 nor. A convenient method of forming amatrix from fusible metal is illustrated in. Fig.

5, the open-ended ring being placed" alfdllt d suitable dieasuch as a tooth or other object,

and the fusible metal poured in until the ring is filled, after which the ring is inverted and placed in position in the lowerend of the cylinder 10. The cup and ring may be intel-changed in accordance with the character of the work to be performed, and as the cyl- I inder and die are readily separated the sheet metal to be swagedmay be accurately adjusted in position.

One'of theprincipal objects of the pres ent invention is to provide the upper die member or plunger with a mass of yielding pliable material which will readily conform to the surface of the tooth or other die or matrix and will exert substantially equal pressure on each portion of the surface thereof, thereby swaging the sheet metal accurately to all surfaces whether undercut orotherwise, the die or matrix being firmly supported and the risk of breakage reduced IQO to a nini-mum. The upper plunger 14 fits snugly within the upper end of the cylinder and projects thereabove for a sufficient distance to permit it being struck by a mallet, and in its lower face is a recess containing a rubber or other yielding body 15, adapted to conformto the surface of the die or matrix. The lower portion of this rubber-like mass projects below the lower end of the plunger, and its normal diameterif unconfined by the cylinder is greater than the diameter of the plunger, as illustrated in Fig. 6. Owing to the increased diameter of the yielding material andits inherent tendency to spread to its normal or original diameter, the material will press'closely against the walls of the cylinder and will hold the plunger in any position to which it may be moved.

\Vith a device constructed in accordance with myinventiou the plunger may be struck a series of blows by a mallet and will remain in the position to which it is moved after each blow, all tendency to rebound being prevented.

While, the construction herein described, and illustrated in the accompanying drawings, is the preferred form of the device, itis obvious that various changes in the form, proportions, size, and minor details of the structure may be made without departing from the spirit or sacrificing any of the advantages of my invention.

Having thus described my invention, what I claim is- 1. A swaging device comprising in combination, a cylinder, a lower die member having a fusibledie .or matrix member, and a plunger guided within the upper end of the cylinder and having on its lower end a yielding body adapted to conform to said die, said yielding body being arranged partly in a recessin the lower end of the plunger and proplunger in any position to which it may be adjusted, said die member and plunger being removable from opposite ends of the cylinder.

2. A dental swaging device, comprising in combination, a cylinder, a lower die member readily removable therefrom, and having a fusible die or matrix member, a plunger guided within the upper portion of the cylinderand having an upper striking-surface above the top of said cylinder, and a yielding body carried by the lower end of the plunger and adapted to conform to the die member, said yielding body being arranged partly in a recess in the lower end of the plunger and projecting below the end thereof, the lower portion of said yielding body having an original or normal diameter greater than the bore of the cylinder and when compressed within the cylinder serving as a means for holding the plunger in any position to which it may be adjusted, said die member and plunger bea ing loosely disposed in and readily removable from said cylinder.

3. A dental swaging device comprising in combination, a cylinder, a lower die member carried thereby, a plunger of a diameter approximately equal to the bore of the cylinder and guided therein, and a yielding body carried bythe lower end of said plunger and adapted to conform to the die member, said yielding body being arranged partly in a recess in the lower end of ,the plunger and projecting below the end -thereoflthe lower portion of said yielding bbdy having an original or normal diameter greater than the bore of the cylinder.

4Q In a device of the class specified, the combination with a cylinderand die, of a plunger adapted tosaid cylinder, said plunger having a recessed lowerend, and a yielding swagingbody arranged in said recess and extending below the end of the plunger, the lower portion of. said yielding body having an original or normal diameter greater than the bore of the cylinder and when compressed within said cylinder serving as a means for holding the plunger in any position to which it may be adjusted.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

; CHA PIN F. LAUDERDALE.

Images