US554379A - Island - Google Patents

Description

(No Model.)

- E. L. SLOGUM.

ELECTRIC LIGHT CABINET.

No. 554,379. Patented Feb. 11, 1896.

AN DREW EORAHAM, PHOTOIJTMO-WA'SHXNGTDN, D.C

during transportation.

EASON L. SLOCUM, OF PAYVTUCKET, RHODE ISLAND.

ELECTRIC-LIG HT CABINET.

SPECIFICATION forming part of Letters Patent N 0. 554,379, dated February 11, 1896.

Application filed March 2 1, l 89 5.

To all whom it may concern:

Be it known that I, EASON L. SLOOUM, a citizen of the United States, residing at Paw tucket, in the State of Rhode Island, have invented a new and useful Improvement in Physicians Electric-Light Cabinets, of which the following is a specification.

The object of my invention is to provide a convenient electric-light apparatus for making medical examinations; and it consists in the improved construction and arrangement of the battery, the improved construction of the lamp-holder and the improved construction of the cabinet for holding the apparatus, as hereinafter fully set forth.

Figure 1 represents a perspective View showing the electric-light cabinet inits opened condition. Fig. 2 represents a longitudinal section of the lampholder. Fig. 3 represents an axial section of one of the cells of the battery. Fig. 4 represents a face View of the rubber washer, which serves to prevent the escape of the exciting solution from the jar Fig. 5 represents an enlarged detail section of the jar, with the top of the negative electrode shown in elevation.

In the drawings, A A represent the jars which form the battery, the said jars being provided at their bottoms with a recess or well I), having upwardly-projecting walls 2), adapted to hold the quicksilver required to amalgamate the surface of the zinc electrode a. The insulator c, which serves to hold the zinc electrode a at its upper end, is provided with the perforation d, adapted for the proper ventilation of the battery. The carbon-electrode e is provided with an annular flange f, under which is placed the annular rubber washer g, which serves to pack the joint be tween the under side of the flange f and the edge h of the jar A, as'shown in Figs. 3 and 5; and the said flange is firmly held down upon the rubber Washer by means of the elastic knob i, which rests against the top of the carbon electrode a when the hinged cover j of the cabinetcase B is shut and locked, thus preventing the leakage of the exciting solution from the jars A A.

At the end of the cabinet-case B is arranged the sliding drawer 7a, which serves to contain a sufficient length of conducting-wires to allow the convenient manipulation of the serial No. 542,698. (No model.)

holder 0 of the electric lamp D, the bindingpost an of the positive electrode a of one of the battery-cells being connected with the binding-post m of the negative electrode of the adjacent cell by means of the connectingwire a; and from the positive electrode a of the second cell connection is made to the binding-post o of the lamp-holder Oby means of the connecting-wire p, and from the binding-post o of the lamp-holder electric connection is made with the binding-post m of the negative electrode of the first cell of the battery by means of the electric wire 19', the closing and opening of the electric circuit with the lamp being effected by means of the hand operated contact-spring g, which when held under the thumb will serve to close the circuit with the lamp, and upon its release from pressure the electric connection will be broken.

The lamp D at the end of the holder 0 is inclosed in a conical reflector r, the said re flector being provided with a forward projection or hood .9, preferably of cylindrical form or slightly convergent toward the forward end, whereby the light will be thrown in a forwardly-directed beam to the point desired.

The forward projection or hood 5' serves to prevent the formation of shadows which result from the thickened central portion of the glass bulb of the lamp, which shadows, when a conical reflector alone is employed at the back of the lamp, will be thrown upon the surface under examination. 7

The drawer k is provided with a partition 75 inclosing a space adapted to receive the holder 0, so that the said holder will be retained in the drawer separated from the connecting-wire, which might otherwise operate accidentally to depress the contact-spring q and cause the continued action of the battery when the lamp is inclosed in the cabinet and not in use. The insulator c of the battery is provided with a vent-orifice d, through which the acid fumes of the exciting solution can escape, and the cabinet is provided at its opposite ends with the perforations t t for the further escape of the fumes to the outer air.

I claim as my invention 1. In an electric-ligl1t cabinet, the combination of a holding-jar for the battery, the negative electrode provided with the flange,

and the packing-ring between the flange of the negative electrode and the top of the jar, with the case provided with the cover, the knob upon the cover adapted when the cover is closed to hold the flange of the negative electrode firmly against the packing-ring to prevent leakage, the electric lamp and its connecting-wire, and the drawer provided with a partition which serves to separate the electric lamp from the conducting-wire when deposited in the drawer, substantially as described.

2. In an electric-light cabinet, the combination of a holding-jar for the battery, the negative electrode provided with a flange, the packing-ring between the flange of the negative electrode and the top of the jar, the case provided with the cover and the vent perforations, the kn ob upon the cover adapted when the cover is closed to hold the flange of the negative electrode firmly against the packing-ring to prevent leakage, the insulator provided with a vent-aperture, the electric lamp and its connecting-wire, and the drawer for holding the lamp and its conducting-wire, substantially as described.

In an electric-light cabinet, the combination of the electric lamp, and the connecting-wire, with the galvanic battery provided at the bottom of the jar with a well for quicksilver, the positive electrode extending downward into the well, the negative electrode provided with the flange, the packing-ring between the flange of the negative electrode and the top of the jar, the box for holding the battery, the cover adapted when closed to seal the jars of the battery against leakage, and a drawer adapted to receive the lamp and its conducting-wire, substantially as described.

EASON L. SLOOUM.

Witnesses:

SOORATES SOHOLFIELD, HARRY J. GARCEAU.

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