US547195A - Dental articulator - Google Patents

Description

(No Model.) R. H. ANTES.

DENTAL ARTIGULA'TOB..

` 110. 547,195. Patented 001. 1, 1895.

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DNTAL ARTICULATOR.

SPECIFICATION forming part of Letters Fatent No. 547,195, dated October 1, 1895.

Application filed July 2, 1895. Serial No.5541679. (No model.)

To all whom it may concern:

Be it known that L'ROBERT I-I. ANTES, a citizen of the United States, residing at Geneseo, in the county of Henry and State of Illinois, have invented certain new and useful Improvements in Dental Articulators, of which the following is a full, clear, and exact description,that will enable others to make and use the same, reference being had to the accompanying drawings, forming a part of this application.

This invention relates to improvements in that class of dental devices employed in the process of preparing plates for artificial teeth, and has for its object the construction of an appliance of this character wherein the natural movement of the human jaws will be closely followed and the articulation accurately obtained and the teeth made to fit the mouth no matter what the relative position of the jaws may be with reference to each other. It is frequently the case that one of the jaws overlaps the other, rendering it a very difficult matter to geta proper articulation, and the bite of the teeth imitated so that they accurately fit the mouth.

This invention embraces construction features in addition to the vertical movement of the lower mechanical j aw, whereby a lateral or forward-and-back movement is obtained of a positive character, and after each movement the parts are automatically and accurately returned to their normal position, thus greatly facilitating the articulating of a set of teeth.

In the drawings, Figure 1 is a side elevation; Fig. 2, a plan; Fig. 3, a transverse section on line 3, Fig. 2, looking in the direction indicated by the arrow; Fig. 4, a broken-away longitudinal section online 4, Fig. 4; Fig. 5, a transverse section on line 5, Fig. 2, and Fig. (i a detached plan of a bracket to which the upper j aw-plate is adj ustably attached. y

The upper jaw-plate A and the lower jawplate B have the usual hinged connection providing for the opening-and-closing movement. The upper plate A is provided in its rear end with aslot a, through which is loosely inserted a hand clamping-screw a', having a threaded engagement with the inner end of a bracket C. A rib a?, Figs. 2, 3, 4, and 6, is formed on the upper side of bracket C and forms a guide for the upper plate in adjustvhinged movement for the plates or mechanical jaws. The slotsin the bracket also provide for an endwise or forwardand-back movement of the upper platein ahorizontal plane. Theinner end of a tubeh is loosely connected to and supported in position on pivot-pin D. A rod b is loosely inserted in tube b and has the outer threaded end projecting through (see Figs. I, 2, and 4) the rear end of bracket C. A spring b2 is located inside of the tube and coiled around the rod extending longitudinally therethrough, as shown in Fig. 4. A nut h3 on the outer end of rod b provides for regulating the tension of the spring. By reason of this construction and arrangement the upper plate A and its bracket are adapted tohavealimited lateral movementin a curved plane, and when the pressure imparting such movement is relaxed the plate is automatically returned to its normal position by the action of the spring.

The inner end 0f the tube in which the spring is chambered being loosely connected to the hinging pivot-pin will slide in either direction thereon, and at the same time the spring and its rod have an endwise movement in providing for and accommodating themselves to the change of position of the upper jaw-plate in its lateral movement. Normally the bracket is in the position illustrated, the wail of the back ends of the slots a4 bearing against the pivot-pin. l/Vhen the upper jawplate and its bracket are moved straight backward the pressure of the spring has the effect of returning these parts to their normal position, the same as moved laterally-in fact, the lateral or back movement may be coincident. A hand-screw d, inserted through the crossbar d of the rear extension of the lower plate B, bears against the under side of the upper plate when in a closed position and provides the usual means for adjusting the inclination of the upper plate.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, s-

1. In an articulator, the combination with connected thereto, and adapted to have a latthe upper jaW-plate, adapted to have both a eral and endwise movement, the lower jaw I5 lateral and endwise movement, of `a spring, plate', a: pivot-pin, connecting said bracket adapted to automaticallyreturn said plate to and lower-plate, a tube, loosely connected to 5 its normal positiomsubstantially as described. Said pin, a rod, inserted loosely through said 2. In an artieulator, the combination with tube, a spring, coiled thereon, and a tension the upper spring pressed jaw-plate, ot' a regulating-nut,mounted on the threaded end zo bracket, provided with slots in the respective of said rod, Substantially as described. sides thereof, the lower jaw-plate, and the ro pivot-pin, connect-iner said bracket and lower ROBERT II. ANTES.

plate, substantially as described. IVitnesses:

3. In an articulator, the combination with HENRY T. ANTES, a bracket, ofthe upper javi-"plate, adj ustably F. H. MGARTHUR.

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