US1210245A - Electric-bell attachment. - Google Patents

Description

T. C. WILLIAMS.

ELECTRIC BELL ATTACHMENT:

APPLICATION EILED JUNE 2. I916.

Patented Dec. 26, ]916.

I UNITED STATES PATENT oriuon.

THOMAS C. WILLIAMS, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR OF ONE- HALF TO JOHN ROBINSON ELDER, OF WASHINGTON, DISTRICT OF COLUMBIA.

ELECTRIC-BELL ATTACHMENT.

To all whom it may concern:

Be it known that I, THOMAS C. WILLIAMS, a citizen of the United States, residing at Washington, in the District of Columbia, have invented certain new and useful Improvements in Electric-Bell Attachments, of which the following is a specification.

My invention relates to electric bells, and more particularly to bells used on street cars for giving the stopping sig al to the motorman, and has for its object to provide an improved base or support for the unitary bell structure to which the bell structure may be connected detachably without the. necessity for any permanent fastenings, said connection automatically completing the circuit to the bell, thereby eliminating the necessity for making the electric connections while the bell structure is being installed in position.

Heretofore in bell structures of this character, which consist of a cast iron base ring and the bell proper detachably connected thereto, it has been necessary to remove the bell structure from the base ring in order that the latter may be screwed to its support, and after said adjustment has been made, it has been necessary to adjust the electrical connections separately. It follows, therefore, that with a bell structure of this character when the same is out of order, it requires considerable manipulation to remove the same and to replace it.

It is the object of my present invention materially to simplify the removal and replacement of the bell structure, as will be hereinafter more definitely set forth, referencebeing had to the accompanying drawmg, in which Figure 1 is atop plan view of a bell structure mounted upon my improved support, a portion. of the bell structure being shown broken away. Fig. 2 is a transverse sectional view of the bell structure and its support, taken on the line I1--I1 of Fig. 1. Fig. 8 is a transverse sectional view, taken at a right angle to Fig. 2 and on the line Ill-III of Fig. 1, the bell being omitted.

Similar numerals of reference denote cor responding parts in the several views.

Specification of Letters Patent.

Patented Dec. 26, 1916.

Application filed June 2, 1918. Serial No. 101,401.

In the said drawing the bell structure shown is of the conventional type, and consists of a bell proper 1 and a cast iron ring 2, the latter having formed integral therewlth lugs 3 projecting toward each other and apertured at 4 to receive screws for attaching said base ring to a suitable support. Sa1d bell 1 is detachably mounted upon the base ring 2 by means of a central screw 5 in the usual well known manner, and said base ring carries the usual magnet 6 for operating the bell clapper (not shown). Bell structures of this type are provided with contact posts 7 and 8, through which the wires of the electric circuit are connected to supply the energy to the magnet 6. The only change over the ordinary bell construction which is found in my improved device is that instead of employing in the contact post 8 a short screw, such as the screw!) of the contact post 7, I employ an elongated screw 10, as clearly shown in Figs. 2 and 3, for a purpose hereinafter to be described.

My improved support 11 for receiving the bell and its base ring comprises a sheet of metal bent angularly at its ends at 12, and projected into flanges 13, through which screwsl l are adapted to be passed to attach said support at any suitable point. The said support is apertured at 15 to receive a spring-plate 16 screwed to an insulating block 17, fixed to the inner side of said support 11, as best shown in Fig. 3. Also formed integrally upon the outer face of the support 11 are the angular hooks or seats 18, disposed adjacent to apertures 19 in said support, suitable spring arms 20, riveted to the underside of said support projecting partly through said apertures 19.

The electric circuit for the bell comprises wires 21 and 22, leading from a suitable source of electricity and having interposed in the circuit thereof one or more normally open push buttons, said wire 21 being connected electrically with the spring-plate 16, while the wire 22 is in electric connection with the support 11.

In assembling the device, the bell structure comprising the bell 1 and its base ring 2 properly assembled, are brought into conadapted to engage tact with the support 11 with the lugs 3 thereof in alinement with the open portions of the angular hooks or seats 18 on the support 11. By now drawing the bell and base ring toward said hooks 18, the lugs 3 will pass beneath said books 18' and will be spring-pressed outwardly rigidly to engage against said hooks or seats through the spring arms 20, in a manner readily understood. With the parts thus brought to the position shown in Fig. 1, the bell structure will be maintained firmly in position upon the support 11, and the movement of the bell structure to this position will cause the projecting screw 10 to contact with and slightly-depress the spring-plate 16. This adjustment completes the electric connection through the support 11 to the bell as follows :through wire 21 to spring-plate 16, to screw 10, to contact post 8 and wire 23 to the magnet 6, and thence through contact post 7, base ring 2, hooks 18 and lugs 4 to the support 11, and from thence through wire 22 to the battery.

By myimproved construction, I am able to adjust a bell structure to position by simply forcing its lugs 3 beneath the hooks 18 of the support 11, which automatically completes the electric circuit to the bell structure magnet and places the bell in condition for operation. The advantages of this construction over the manner of attaching these bell structures heretofore are so obvious as to requirelittle explanation, it being apparent that when the base ring 2 is screwed to its support, it is necessary to remove the bell 1 in order to manipulate the screws, and it is necessary further to make the electric connections separately after the base ring'has been positioned.

A further advantage of my improved construction is that when a bell structure on a street car is found to be out of order, it can be removed in an instant by the conductor or motorman and replaced by the bell structure at the other end of the car, so that a fresh bell structure can be supplied instantly to be used until the car can return to the barn.

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

1. The combination with a unitary electric bell structure, of a support for receiving the same, ments adapted rigidly but removably to engage lugs on the other element to connect said elements.

2. The combination with 'a unitary electric bell structure, of a support for receiving the same, hooks on oneof said elements lugs on the other element to connect said elements, and spring plates for maintaining said hooks and lugs in engagement.

7 adapted to engage 'ing the same,

and hooks on one of said ele- 3. The combination with a unitary electric bell structure, of a support for receiving the same, hooks on one of said elements lugs on the other element to connect said elements, and spring plates carried by said hook supporting element for maintaining said hooks and lugs inengagement.

4. The combination with a unitary electric bell structure, of a support forreceivhooks on one of said elements adapted wedgingly to engage lugs on the other element to connect said elements, and means for establishing operative electric connections automatically with said bell through the engagement of said elements. I

5. The combination with a unitary elec-' tric bell structure, of a support for receiving the same, hooks on one of said elements adapted rigidly to engage lugson the other element to connect said elements, a spring tongue carried by but insulated from said support, a projection on said bell structure adapted to engage said spring tongue when said bell structure and support are engaged, and an operative electric circuit established through said spring tongue and projection to the bell magnet and from said bell magnet through the bell base and support.

6. Thecombination of a unitary electric bell structure, lugs formed on the base ring of said bell structure and projecting toward each other, a support, hooks on said support adapted to engage said lugs on the .base ring, and springs on said support adapted to force said lugs rigidly into. contact with said hooks.

7 The combination of a unitary electric bell structure, lugs formed on the base ring of said bell structure and projecting toward each other, a support, hooks on the support adapted to engage said lugs on the base ring, and springs carried by said supportand projecting throu h apertures therein rigidly to engage said u s on the base ring.

8. The combination 0 a unitary electric bell structure, lugs formed on the base ring of said bell structure and projecting toward each other, a support, hooks on the support adapted to engage said lugs on the base ring, a spring tongue carried by but insulated from said support, and a projection on said bell structure adapted to contact with said spring tongue when said bell structure is positioned on its support to establish One side of an electric circuit to the bell magnet.

9. The combination of a unitary electric bell structure, lugs formed on the base ring of said bell structure and rojecting toward each other, a support, hoo s on the support adapted to engage said lugs on the base ring, springs on said support adapted to force said lugs into contact with said hooks,

a spring tongue carried by but insulated support to establish one side of an electric from said support and projecting at its free circuit to the bell magnet. end through an aperture in said support, In testimony whereof I hereunto set my and a projection on said bell structure hand this 2nd day of June, 1916.

5 adapted to contact With said spring tongue when said bell structure is positioned on its THOS. C. WILLIAMS.

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