US825488A - Push-button. - Google Patents

Description

No. 825,488. PATENTEDJH'LY 19, 1906.

P. A. $GHNEIDER.

PUSH BUTTON. Yunnan Hum ms. 21. 1905.

all mum's rtrsns co minimum". n. a

UNITED s'rn rns PATENT OFF CE.

I Specification of Letters Patent.

- atented July 10, 1906,

Application filed March EL 1905. Serial No. 261,340.

To all whom it may concern.-

Be it known that I, FREDERICK Auous'r SCHNEIDER, of the city of Toronto, in the count 1 of York and Province of Ontario, Canada, ave invented certain new and useful Im rovements in Push-Buttons and Ihereby (lee are that the following is a full, clear, and exact description of the same. i

This invention relates to a push-button for a three-circuit system-win, a receiving-signal circuit, a transmitting-signal circuit, and a communicating or talking circuit; and the object of the invention is to so arrange the terminals and contact-points of the push-button that the circuit of the current can be translated over any one of these three circuits to operate, respectively, the receivingsignal, the transmitting-signal, orthe instruments of the communicating or talking circuit.

In carrying out the invention the pushbutton is provided with the usual stationary and sprin contact-plates constituting the terminals or the transmitting-signal circuit which is normally open, and with an instrument-su porting hook in shunt to the conductor eadin to the spring contact-plate, and a termina to which is adapted to be connected a conductor forming with the condoctor leading to the supporting-hook a receiving-si nal circuit when the instrument is suspends from the hook and with the conductor leading to the springcontaot-plate a communicating or talking circuit when the instrument has been removed from the hook, as hereinafter more fully set forth in the specification and more out in the claim.

For a full understanding of the invention reference is to be had to the following description and to the accompanying drawings, showing the push-button used in conjunction with an intercommunicating systeinr Figure 1 is a diagrammatic view showing the push-button installed in a central station of a three-circuit system. Fig. 2 is an enlarged view ofthe ush-button loo from the front. 3 is an enlarge view looking at it from the back. Fig. 4 is a sectional view of the push-button receiver and connecting-cord, showing the receiver upon the hook. Fig. 5 is a similar view showing the receiver removed. 6 is a vertica. section of the push-button.

Like letters of reference refer to like parts throughout the specification and drawings.

particularly pointed at it One pole a of the'battery b is connected with the spring contact-plate c by the electrical com uctor d, and in shunt with the electrical conductor (1 is the signal-conductor 6, leading throu h the signal e to the instrument-hook he other pole g of the hattery is connected by an electrical conductor k with the substation i, and the substation i is connected with the terminal by an electrical conductor it. When the instrument 3c is suspended from the instrument-hook f and the plugs Z and Z of the usual electrical conductors it and Z", res eotively contained in the cord 3c, are inserte in the jacks mand m, respectively, the signal-circuit is from the pole at, by means of the conductor d, to the shunt and then through the signal a over the conductor e to the instrument-hook f, through the instrument 7c and electrical conductor 1, contained in the flexible cord 5%, to the plug 1 and terminal from which it flows by means "of the conductor k to the substation 'i, and

by the electrical conductor h to the other pole g of the battery. This circuit is normally open,

and to close it it is only necessary to operate the push-button o in the substation i and bring the terminals for the conductors h and it together, which completesthe circuit between the poles a and g of the battery through the callin -signal 2 of the station 11.

To esta lish a signal-circuit, the sprin contact plate c is moved into contact wit the stationary contact-plate which is connected b the conductor r t on 11 the signal 8 with the conductor h, and w on the two contact-plates are together. the, circuit of the current 18 from the pole a over the conductor (1, spring contectlate a to the stationary contact-plate g, an over the conductor 1' to the signal s at the substation i, which it operates so ion as the two contact-plates are together, an from the signal s to the conductor k and pole g of the battery, the resistance in this circuit being less than the resistance of the circuits hereinbefore and hereinafter described.

The resistance of the conductor lc exceeds the resistance through the signal e and conductor e and when the instrument is on the hookf the circuit is through the signal to the hook and then through the conductor 1 to the plug 1. and terminal but by removing the instrument k from t e hockf the cireuitthrough the signal e is cut out and a ICO talking-circuit is established from the pole a to the spring terminal plate 0 by means of the electrical conductor d and from the spring terminal plate through the plug I, constantly in contact with it to its respective electrical conductor k", contained in the cord is, then through the instrument It and electrical conductor Z to the plug 1 and terminal j, with which the socket m of the plug Z is in constant contact, and from the terminal to the substation t' by the electrical conductor h through the instrument i when off the hook i to the electrical conductor h, over which it flows to the other pole g of the battery.

In the operation of the system when the station p desires to call the station 1' the operator without removin the instrument It from the instrument-hoo f presses the plunger t to bring the spring contact-plate into engagement with the stationary contactplate g, so that the current can flow from the ole a to the pole 9 over the circuit formed by the electrical conductor d, contact-plate c and g, electrical conductor r, signal 8, and electrical conductor h, the signal continuing to operate while the contact-plates remain together. When the contact-plates have again separated, the calling-signal circuit is broken and the receiving-signal circuit is established over the conductor d to'the shunt through the signal 6, conductor e to the instrument-hookf and instrument k to the terminal and then to the pole g, as above describe so that the 0 erator at the substation 1' when his signa has ceased operating ss ie can acknowledge the signal from the central station by pressing his push-buttono to close the circuit to the pole g. Both substations are then ready to communicate with one another when both instruments are removed from the instrument-hooks.

A push-button constructed and arranged as above outlined will perform the functions which have heretofore been required to be performed by a push-button and switch in systems of this nature.

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

A push-button comprising two normally separated contact-plates constituting the terminals for the conductors of the op osite oles of an electric circuit, means for h ringing said contact-plates together to close said circuit an instrument-hook constituting a terminal for a conductor in shunt to the conductor of one of the contact-plates,' two sockets for the push-button, a plug for one of the sockets in clrcuit with the last-mentioned contact-plate, a plug for the other socket and alterminal in circuit with the last-mentioned p ug.

Toronto, February 25, A. D. 1905.

FREDERICK AUGUST SCHNEIDER.

In presence of L. FLORELLA BROCK, O. H. RIoHEs.

Images