US937427A - Rosette. - Google Patents

Description

F. 0. DE REAMER.

ROSETTE. APPLICATION FILED JULY s, 1908.

Patented Oct. 19,1909.

Frank C. De Reamer,

UNITED STATES PATENT oEEIoE.

FRANK C. DE REAMER, OF SCHENECTADY, NEW YORK, .ASSIGNOR TO GENERAL E LEC- TRIO COMPANY, A CORPORATION OF NEW YORK.

ROSETTE.

Specification of Iietters Patent.

Patented Oct. 19, 1909.

Application filed July 3, 1908. Serial No. 441,730.

the following is a specification.

This invention relates to devices for effecting connections between the terminals of electric circuits, and its object is to provide an improved rosette for ceilings or walls having concealed wiring and a contactcarrying cover or cap capable of separation by a direct pull.

The invention consists in certain details of construction hereinafter set forth and particularly pointed out in the claims.

In the accompanying drawing, Figure l is a side elevation, partly broken away, of my improved rosette; Fig. 2 is a longitudinal section of the same on a plane substantially at right angles to Fig. 1; Fig. 3 is a bottom plan view of the base portion; Fig. 4 is a top plan view of the body portaon, and Fig. 5 is a top plan view of the whole partly broken away.

The ase 1, body 2 and cap v3 are made of insulating material, preferably molded porcelain. The rosette illustrated is circular in cross section, but this particular shape is lmmaterial. The under face of the base is slightly recessed leaving along its edge a 'flange 4 within which the upper end of the bed fits snugly. The body is secured to the ase by a central longitudinal screw'bolt 5, having its head countersunk in the body, and its nut 6 countersunk in the base. Two flat terminal-plates 7 are secured by screws 8 to the under face of the base 1, adjacent to the holes 9 through which the line wires 10 enter. Bindin screws 11 in said plates fasten said wires t ereto. To the upper surface of the body 2 are secured two flat contact plates 12 so located that when the bodyand ase are assembled and properly orientated by the interlocking notches 13 and lugs 14 the contact-plates and the terminal plates lie across and in contact with each other; as shown in Fig.5. Clips 15 arehoused in deep recesses 16 entering the'body 2 from below on each side of the screw 5,

i and connecting screws 17 pass through the contact-plates into said clips. The cap 3 carries two fingers 18 forming the terminals of the Work circuit leads 19 which pass down through a central opening 20 in said cap. The fingers are arranged to enter the resilient clips when the cap is closed upon the lower end of the body. The clips exert a clamping hold upon the fingers sufficient to support the cap and the leads, but a sharp pull on said cap or the leads will detach the cap and open the circuit.

The simplicity of construction, ease of wiring, concealment and protection of conducting elements, and the neatness and symmetry of appearance combine to render this rosette a distinct advance in the art.

\Vhat I claim as new and desire to secure by Letters Patent of the United States, is:

'1. A rosette comprising a base, a body and a cap, flat terminal-plates on the under side of the base, cooperating flat contact-plates on the upper end of the body, means for securing said base and said body together,-

contacts connected to the contact plates of said body, and contacts on said cap adapted to detachably engage the contacts on said body.

2. A rosette comprising a base, a body having recesses entering from its lower end, and a cap, fiat terminal-plates on the under side of the base, fiat contact-plates on the upper end of the body, clips in said recesses connected with said contact-plates, and tingers on said cap adapted to enter said clips and be detachably held thereby.

.3. A rosette comprising a base having a flange along its edge, a body adapted to fit inside said flange, a central fastening screw passing through said body and base, flat co-

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