US793233A - Lamp-holding bracket for dental chairs. - Google Patents

Description

PATBNTED JUNE 27, 1905.

J. J. RYAN.

LAMP HOLDING BRACKET FOR DENTAL CHAIRS.

APPLICATION FILED AUG,11,1904.

Patented June 27, 1905.

FFICE.

JOHN JAMES RYAN, ()F PARIS, FRANCE.

LAMP-HOLDING BRACKET FOR DENTAL CHAIRS- SPECIFICATION forming part of Letters Patent No. 793,233, dated June 27, 1905.

Application filed August 11, 1904. Serial No. 220.400.

To (1. whom it nu/.1 concern:

Be it known that I, Jena Janus RYAN, of Paris, Republic of France, have invented certain new and useful Improvements in Lampllolding Brackets for Dental Chairs; and ldo hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates'to an improvementin pivoted brackets, designed particularly for supporting alcohol-lamps used by dentists for annealing gold, warming wax and gutta-percha, &c., the object of the invention being to provide a movable bracket capable of being secured to the toolholding table attached to the chair and provided with means for engaging a lamp and detachably locking the same in place, the construction being such that the bracket may be turned to any position with relation to the table without danger of displacing or upsetting the lamp.

With this object in view my invention consists in the parts and combinations of parts and in the details of construction, as will be more fully explained, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in perspective, showing my improvement applied to a dental table. Fig. 2 is a view in vertical section, taken through the bracket and clamping-yoke; and Figs. 3 and i are views taken through standard 8, respec tively above and below yoke 11.

1 represents the bracket, preferably made of wire rod and provided at one end with an enlarged flattened head 2, the latter having a central opening for the passage of the pivot which secures the table to the tablesupporting standard. This table, which is the ordinary table attached to a swinging or pivoted standard or support secured to a dental chair, is designed to be moved or adjusted in the wellknown manner and as now universally used forms the support for the alcohol-lamp used for annealing gold and warming wax and gutta-percha.

My improvement is designed to furnish a support for the lamp independent of but movable with this table and also adjustable independently of the table, so that the lamp will always be in a position convenient to the operator and adjacent to the table.

The bracket 1 is, as before stated, pivotally mounted on the table-supporting bracket at a point below the table and extends outwardly to a point slightly beyond the edge of the table, is then bent upwardly, as at 4., and then inwardly, as at 5, to a point over the table and near the edge of the latter. The inwardlybent portion 5 of this bracket is located sulliciently high above the top of the table so as not to interfere with or obstruct the movements of the operator, and the free end of the portion 5 is enlarged, as at 6, to form a seat for the base of the lamp 7. This seat for the lamp may be perfectly Hat and without any flanges and is preferably cut away at its center, forming a ring-shaped seat. Secured to the inwardly-projecting portion 5 of the bracket is the standard 8. This standard is preferably made with flattened sides 9 and curved edges 10 and is designed to receive and support the gravity clamping-yoke 11. This yoke is made at one end to embrace the neck of the lamp and is provided at its other end with a sleeve [2, conforming in shape to the crosssection of standard 8, so as to freely slide up and down thereon. The opposite end of this yoke 11 is, as before stated, made to embrace the neck of the lamp and rests on the body thereof, and when resting normally against the body of the lamp absolutely locks the latter against movement, the weight of the yoke preventing any movement of the latter on the standard except when grasped at or near the sleeve and held in such position as to remove the friction or clamping action between the sleeve and the standard. by raising the yoke the lamp is left free to be removed, and by simply lowering the yoke over the neck of the lamp the latter will be locked securely in place and be absolutely held against displacement. I prefer to make the standard 8 hollow for the reception of the stem 13, carrying the annealing-tray 1 1, the stem being adjustable within the standard by meaus of the setscrew 15. \Vith this attachment the table can be turned to any position without altering the relation of the lamp to the table, and the bracket I can be turned on its pivot, so

asto move the lamp to any position around the edge of the table.

The improvement is designed for attachment to any of the well-known tables now in common use and can be applied by any one without the aid of tools.

It is evident that many slight changes might be made in the relative arrangement of parts herein described without departing from the spirit and scope of my invention. Hence I would have it understood that I do not wish to confine myself to the construction shown and described; but,

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a support for a lamp, a bracket comprising a horizontal arm designed to be pivoted at one end and bent upwardly and inwardly at its opposite end, the free end of the inwardly-bent portion forming a seat for a lamp, a standard secured to said inwardlybent portion, and a yoke adapted to embrace the neck of a lamp and slidingly mounted on said standard.

2. The combination with apivoted table, of a bracket mounted on the table-pivot and eX- tending outwardly, upwardly and inwardly to a point over the table and provided at its free upper end with a seat for a lamp, a standard adjacent to said seat and a gravity clamping-yoke slidingly mounted on said standard and adapted to embrace the neck of the lamp.

3. In a support for a lamp, a bracket comprising a horizontal arm designed to be pivoted at one end and bent upwardly and inwardly at its other end, and provided at its free end with a seat for the lamp, a standard secured to said inwardly-bent portion, a yoke adapted to embrace the neck of the lamp and slidingly mounted on the standard, and an annealing-tray adjustably secured to the standard at a point above the lamp.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

JOHN J AMES RYAN. IVitnesses:

A. W. BRIGHT, WV. CLARENCE DUVALL.

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