US 1883968 A
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Description (OCR text may contain errors)
Oct. 25, 1932. 5. J. KRlVlG DENTAL SWAGING PRESS Filed June 28, 1950 w 5 .1. 5 a f Patented Oct. 25, 1932 UNITED STATES PATENT osrrcs STEPHEN J'. KBIVIG, OF HILLSIDE, NEW JERSEY, ASSIGNOR TO BAKER & COMPANY,
' INC., A CORPORATION OF NEW JERSEY DENTAL SWAG-ING PRESS- Application filed June 28,
This invention relates to an apparatus for swaging dentures, such as plates and crowns, one object of the invention being to provide apparatus of this character embodying novel and improved features of construction whereby the apparatus shall be simple in structure, and easy and rapid in operation with a minimum number of separate parts to be handled and a minimum number of ma nipulations and adjustments required.
Other objects are to provide a swaging press including a frame having a top-piece and a base in opposed relation, a screw mounted in said top-piece to move upon rotation toward and from said base, and a head-block mounted on the end of said screw nearer the base to exert pressure upon a die or object arranged on said base, said block being connected to said screw for free rota-- tion of said screw and said head-block and so that said head-block shall move with said screw upon longitudinal movement of the latter; to provide a press of the character described embodying novel and improved i means for connecting said head-block to said screw whereby great pressures can be exerted uniformly upon said die or object through said screw and said block with relatively small power applied to rotation of the screw; to provide such means for connecting said head-block to said screw whereby said head-block can tiltrelatively to said screw so as to permit the head-block to adjust itself evenly upon said die or object; and to obtain other advantages and results as will be brought out by the following description.
Referring to the accompanying drawing in which corresponding and like parts are a designated throughout the several views by the same reference characters.
Figure 1 is a side elevation of a swaging apparatus embodying my invention.
Figure 2 is a transverse vertical sectional =2; view on the line 2-2 of Figure 1, and
Figure 3 is a horizontal sectional View on the line 33 of Figure 1.
Specifically describing the illustrated em bodiment of the invention, the apparatus in cludes a press comprising a base 1 and a to 1930. Serial No. 464,486.
screw may be rotated by any suitable means;
for example the end of the screw may be provided with a transverse opening 5 into which may be inserted a rod or the like to provide a handle.
Upon the end of the screw near the base is mounted a head-block 6. As shown in the drawing the said end of the screw 4 has a circumferential groove 7, and the block 6 has a socket 8"to loosely receive the end of the screw. The base of the socket 8 has a substantially semi-spherical seat 9 in which is arranged a ball 10, and the extremity of the screw a has a similar seat 11 to receive the ball 10. The. ball and the seats 9 and 11 are'so related to the extremity of the screw and the base of the socket 8, that the extremity of the screw is held in'spacedrelation to the base of the socket, and directcontact of the screw with the block is made through the ball. At diametrically opposite points in the block are threaded set screws 12 which have reduced end portions 18 to loosely enter the circumferential groove 7, as clearly shown in Figure 2 of the drawing.
With this construction, the block and the screw may freely relatively rotate. Also the play between the ends 13 of the set screws 12 and the groove 7 permits the block and screw to have relative longitudinal movement, and the ball 10 in conjunction with the loose engagement of the ends 13 of the screws with the groove 7 permits the blOCl to hate a lim-,
ited tilting movement relative to the screw. Preferably a hole A is provided in the top ofthe block and directed into the socket 8 for the purpose of supplying lubricant to the socket so as to lubricate the engaging surfaces of the block the ball and the screw.
In use of the press, the object or material to be operated upon is placed upon the base beneath the block, and obviously rotation of the screw in the proper direction will cause pressure to be exerted by the block upon the object or material.
For swaging dental plates I have shown one type of apparatus which may be used, although obviously other suitable types may be utilized if desired. The illustrated apparatus includes a the cup 15 in which is ranged a die 16 over which is placed a sheet of metal or the like 17 to be swaged. Upon the metal plate is arranged a suitable forming substance, for example, one or more discs of rubber 18. The cup 15 is of a size and shape to loosely receive the head-block 6, and in 0peration'of the apparatus after the die 16, plate 17 and discs 18 have been .placed in the cup, as shown in Figure '2 of the drawing, the screw 2 is rota-ted to force the head-block against the discs 18. The pressure thus produced compresses the rubber discs and'causes the plate 17 to tightly conform to the die 16, as shown in thedrawing, whereby the plate '17 is swaged.
It will be'observed that in this-operation'the head-block may tilt relatively to the screw so as to adjust itself to any unevenness in the material in the die cup and thus exert uniform pressure over the whole area of the rubber disc. Also, the ball contact between the screw and the head-block enables great pressures to be exerted by the screw through the block with relatively small power applied to rotate the screw, friction between the screw and the head block being at the minimum; and this construction also reduces the tendency of the head-block to rotate with the screw so as to reduce torsion upon and'deformation of the rubber discs 18. After the swaging operation, rotation of the screwin the opposite direction-causes movementofthe block with the screw out of the die cup, whereand rapid.
The inventionmaybe embodied in other details of construction than those illustrated without departing from thespirit or scope of the invention, and therefore I do not-desire to be limited in the construction or use of the invention except as required by the following claim when construed in the light of the prior art.
Having thus described my invention, what I claim is:
A press of the character described, comtudinal and tilting. novement and free relative rotation upon said screw.
STEPHEN J. K'RIIVIG.