US558385A

US558385A - Telephone-bell

Info

Publication number: US558385A
Authority: US
Publication date: 1896-04-14
Anticipated expiration: 1913-04-14

Description

(No Model.)

R. D. HARRIGAN.

TELEPHONE 'BELL. No. 558,385. Patented Apr. 14, 1896.

WITNESSES: llVl/E/VTOR @m/w/W Haj/Mm ATTORNEYS.

UNITED STATES PATENT OFFICE.

RICHARD D. IIARRIGAN, OF LEADVILLE, COLORADO.

TELEPHONE-BELL.

SPECIFICATION forming part of Letters Patent No. 558,385, dated April 14, 1896. Application filed November 5,1895. Serial No. 567,968. (No model.)

will continue to be sounded after the main circuit shall have been opened or cut out for instance, at the main oflice-and also to ring a bell located at a distance from the telephone.

The invention consists in the construction and novel arrangement of parts, as Will here:

inafter appear, and be particularly pointed out in the claims.

Reference is to be had to the accompanying drawing, forming a part of this specification, in which the figure is a diagrammatic view of devices embodying my invention.

Referring to the drawing, A designates a gong secured to the telephone-casing A.

A is an electromagnet, and A is a bellhammer having an armature a on its pivoted shank portion, coacting with the electromagnet. A spring a, secured at one end to the hammer-shank and at the other end to the casing, serves to draw the armature from the electromagnet.

The electromagnet is located in a main circuit comprising a wire 1, leading directly .to the electromagnet, a wire 2,leading to acontact-pin 3, a portion 4 of the hammer-shank, which is designed to engage with said pin and serve as a circuit-closer, and a wire 5, leading from the portion 4 of the hammer-shank to the electromagnet.

B is a circuit-closer for closing an auxiliary circuit connected with the telephone-casing and comprising wires '7 8, connected, respectively,with the main wires 1 2 and with contact-points b b, which are here shown as mercury-cups; but I do not limit my invention to this form of contact-points, as ordinary metal fingers or plates will answer the purpose. In the auxiliary circuit is located a battery B.

The circuit-closerB is here shown as made in the form of an angle-lever pivoted at its angle to a bracket b and having a horizontal portion provided with contact-fingers b b, adapted to engage with the contact-points b b, and the closer has a vertically-disposed member b, which, when the closer is in open position, bears against a stop-pin b on the casing. This stop-pin b is so located as to allow the upper portion of the member 6 to lie in close proximity to the bell-hammer A when the same is in its normal position away from the gong. 'In lieu of the pin b or in connection therewith I may employ an adjustable stop for the circuit-closer B. The adjustable stop is here shown as aset-screw b extended through a tapped hole in an arm extended from the bracket 12 and impinging against the closer. In operation'when the circuit is closed through the main circuit the electromagnet will draw the hammer against the bell, and upon the return movement of the hammer under the influence of the spring a the hammer will strike the member 12 of the closer B and cause it to rock on its pivot and bring the fingers b 11 into engagement with the contact-points b I), thus closing the auxiliary circuit comprising the battery B. \Vhen in this condition,and after the main circuit shall have been opened at the central office, the gong will be continuously sounded, or until the parts are returned to their normal position by disengaging the fingers b b from the mercury or similar contact-points b b. I also contemplate the closing of a circuit by means of the closer B, whereby a bell located at a distance from the telephone may be sounded, and to this end I show a bell B which may be located at any desired point, and this bell is contained in a circuit comprising a battery B and wires 9 10, which are in engagement with the contact-points b b. It is obvious that this last-described circuit may be omitted or it may be employed alone, the main object being to set a bell in operation after the first ringing of the telephone-bell. For the purpose of the claims this last-described circuit may also be termed an auxiliary circuit.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a telephone, a gong, a hammer therecuit of an auxiliary circuit, Wires having connection with the main circuit-Wires, a battery in the auxiliary circuit, contact points, a closer for said auxiliary circuit comprising an angle-1ever having a horizontal portion provided with contact-fingers to engage the contact-points, and a vertically-disposed member adapted to be engaged by the hammer to operate said circuit-closer and a stop for said closer, substantially as specified.

RICHARD D. IIARRIGAN. lVitnesses:

WILLIAM B. PECK, CHARLES E. HOTALING.