US761273A - Dental mouth-mirror. - Google Patents

Description

' No. 761,273. PATENTED MAY 31, 1904.

R. WALKER.

- DENTAL MOUTH MIRROR.

APPLICATION FILED MAR. 19, 1904.

no IODEL.

UNITED STATES Patented May 31, 1904.

PATENT OFFICE.

ROBERT WALKER, OF NEW YORK, N. Y., ASSIGNOR TO CHARLES A. SYKES,

V OF NEW YORK, N. Y.

' DENTAL MOUTH-MIRROR. I

SPECIFICATION forming part of Letters Patent No. 761,273, dated May 31, 1904.

Application filedMarch 19, 1904. Serial No. 198,880. (No model.)

To all whom it may 0071106771 dental examinations and for other like purposes must be sterilized after each use, and for this purpose the mirror proper must be capable of being removed from its holder, so that the sterilizing may be complete and thorough. Various devices have been proposed for the purpose of enabling the mirror to be removed from its holder while providing for its secure retention in the holder when in use, and some of such devices are in use to a considerable extent. All of these devices, however, embody small parts which are separable, and therefore liable to be lost or are liable to become broken or are diflicult to handle or in other ways are objectionable in actual use.

It is therefore the object of the present invention to improve the construction of the holders in such manner as to overcome the objections heretofore referred to and to provide a holder which shall comprise few parts and shall be easily and quickly manipulated under all conditions.

In accordance with the invention the im proved holder is composed of two members which are hinged together, the pintle of the hinge being formed, preferably, upon the handle and having a screw-threaded engagement with one of the hinged members, so that when it is turned up tightly the two membersof the holder will be clamped in position to retain the mirror and when it is loosened the holder may be flexed upon the hinge-line to permit the removal of the mirror.

The invention will be more fully described hereinafter with reference to the accompanying drawings, in which for purposes of illus tration and explanation it is represented as embodied in a convenient and practical form.

In the drawings,.Figures 1 and 2 are respectively a front view and a rear view of the holder, the handle being broken off to save space. Fig. 3 is an edge view, partly in section, in the hinge-line to show details of construction. Fig. 4 is a transverse sectional view on the plane indicated by the line 4 4 of Fig. 1. Fig. 5 is a view similar to Fig. 4, but showing the holder flexed. Fig. 6 is a detail view showing a portion of the holder with the hinge-pintle.

The holder may be of any suitable size and shape and may be made of any desired material. As represented in the drawings, it is composed of two semicircular plates a and 6, having each a flanged and undercut edge 0, so that when the two plates (0 and b are assembled they shall form a disk with a flanged edge adapted to retain the mirror d. It will be obvious, however, that the plates might have some other desired form and be otherwise formed to engage the mirror, it being necessary merely that the mirror shall be securely held when the holder is in operating condition and shall be capable of being withdrawn when the holder is flexed. The two members a and 5 of the holder are hinged together along the back, each member being provided with a knuckle a and 6, respectively. The pintle 0 is threaded into the knuckle a, as shown at e, and is provided with a head or shoulder e to bear against the knuckle b, so that when the pintle is turned up tightly the two members of the holderwill be clamped in whatever position they may be placed, such clamping of the holder when the two members thereof are in the relative positions shown in Figs. 1, 2, 3, and 4 serving to retain the mirror d firmly in position. If the pintle be given aslight backward rotation, the two members of the holder are released, so that the holder may be flexed upon the hinge-line, as shown in Fig. 5, and the mirror may then be removed to permit both the mirror and the holder to be thoroughly sterilized. For convenience in manipulation, as well as in manufacture, the pintle c is preferably formed as a part of the usual handle f.

It will be obvious that the improved holder is not only inexpensive to manufacture, but that it has no parts which are liable to be lost or broken and that it is manipulated with the greatest possible facility, while there are no projecting parts to form additional lodgment for germs.

1 claim as my invention 1. A holder for dental mirrors, 620., comprising two members formed to engage the mirror and hinged together along the back and apintle for the hinge formed to engage the hinged knuckles to clamp the two members together, substantially as shown and describd.

2. A holder for dental mirrors, &c., comprising two members formed to engage the mirror and hinged together along the back and a pintle for the hinge threaded into one of the hingedknuckles and havinga shoulder for contact with another of the hinged knuckles to clampthe two members together, substantially as shown and described.

3. A holder for dental mirrors, &c., com prising two members formed to engage the mirror and hinged together along the back and ahandle formed with apintle for the hinge and adapted to clamp the two members together, substantially as shown and described.

4. A holder for dental mirrors, comprising two members formed to engage the'mirror and hinged together in a central line along the back, and a handle formed with a pintle passing through the hinge-knuckles and engaging the same to clamp the two members together, all of said parts being back of the reflectingsurface of the mirror, substantially as shown and described.

This specification signed and witnessed this 18th day of March, A. D. 1904;.

ROBERT WALKER. In presence of ANTHONY N. JEsBERA, M. A. BRAYLEY.

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