US269013A - Cut-out for electric lamps - Google Patents

Description

(No Model.)

0. F. COLEMAN 8: H. A. SMITH.

GUT-OUT FOR ELECTRIC LAMPS.

Patented Dec. 12, 1882.

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UNITED STATES CHARLES F. COLEMAN AND HENRY A. SMITH, OF ATLANTA, GEORGIA.

CUT-OUT FOR ELECTRlC LAMPS.

SPECIFICATION forming part of Letters Patent No. 269,013, dated December 12, 1685.,

Application filed October 5, 1882. (No model.)

To all zrhom it may concern:

Be it known that we, CHARLES F. Comm AN and HENRY A. SMITH. both ot'Atlanta, in the county of Fulton and State of Georgia, have invented a new and Improved Out-Out for Electric Lamps,ot' which thefollowingis a full, clear, and exact description.

Our invention consists in an improved cutout for systems of electric lighting employing either are or incandescent lamps.

The object of the invention is to avoid the liability of warping and the burning of the cutout and connecting wires, which is a great 0bjection to cut-outs as heretofore made. In our improved device we cut out the lamps without breaking the cirouit,so that the current has a continuous unbroken connection without the aid of s rings or switches to convey the current, as setforth more particularly hereinafter.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a plan view of our improved cutout. Fig. 2 is a plan view with certain parts removed. Fig. 3 is a section on line 0000, Fig. 1. Fig. 4 is an inverted plan view of the turning-block by which the current is shifted.

In the drawings, the cut-out is shown as applied to a suitable base, which may be attached upon the outside of a building or in any other convenient situation; but it is to be understood that the cut-out may be made a part of the inclosing box or case of the lamp, thus reducing the cost of construction.

Referring to the drawings, A is the base, of wood or other suitable material, and upon this are secured metal bars or strips B, which are placed radiating from the center of the base, and upon the outer end of these bars B are binding-posts a. The inner ends of the bars B, at the center of the base, are not in connection with each other, but are separated asnitable distance apart. v

Upon a pivot-post, O, at the center of the base A, is a block, D, of wood or other suitable non-conducting material, the bottom of which is enlarged in the form of a square plate of a size for extending over the ends of the metallic bars B. To the under side of the 'quired to insure contact. justable by means ot'nut 2'.

said block 1) are fixed two metallic plates, E, parallel with each other and in position for connecting the ends of the bars B.

Upon the ciicular portion of the block D is a coil-spring, F, one end of which connects with the block, while the other end is connected to a fixed piece or stud, d, on the base A. On the outer end of post 0, beneath a head or out, i, thereon, is a spring, H, which bears on block I), to press the same down with the force re- The pressure is ad- The bloclt is loose upon the pivot-pin 0, so that it can be turned, and it is provided at one side with a projecting pin, 1), which is used in connection with a catch, 0, on the base, for holding the block in its normal position,in which position the spring F is brought under tension, so that when the catch a is raised the block will be thrown around a quarter-revolution until arrested by the pin 1) taking against the fixed piece (I.

The line-wires are to be connected to two oi the binding-posts a, as shown at m 112, while the circuit-wires n to the lamp are to be connected to the other two binding-posts. In the position of the block D, as shown in Fig. l, the two metallic plates E connect the. total bars B in such a manner thattheincomingcurrent, as shown by the arrows, is carricd across by one plateE to one ofthe bars B in thelampcircuit, and from thence passes to the lamp represented at H to the other bar B in the lamp-circuit, and thence by the other plate It to the bar B, that is connected with the outgoing line-wire. lVhen it is desired to cut out the lamp the catch 0 is to be pressed down, and the block D, being thus released, is turned a quarter-revolution by the spring F, so that the plates E connect the two bars B B, to which the line-wires are connected, thus cutting out the lamp without breaking the main circuit.

It willbe seen that there are no parts liable to become warped, and there being no period of time in which the circuitis broken, and, further, the conducting-surfaces being ample for the current, there can be no spark or any liability of the parts becoming burned.

The turning-block may be provided with a handle for use in turning the same to its norm al position.

to the under side of said block, and the spring F, connected at one end with stud (Z and at the other with block D, whereby in the cut-out the circuit is rendered continuous without the aid of springs or switches, as described.

CHARLES F. UOLEMAN. HEJRY A. SMITH.

Witnesses E. S. GRINNELL, SAML. STOCKING.

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