US1186864A - Automatic cut-in for telephone reinforcing devices. - Google Patents

Description

E.E.TRAFTON. AUTOMATIC CUT-IN FOR TELEPHONE REINFORCING DEVICES.

6 M 1 V 9 e 11 H N a. E nm .Li I! 9 I {w I. n M H u W J W... H I\ T d H .n .T. I B 5 vs: I .W V m t 2 N n. l Ax t 3 APPLICATION FILED MAY 7, I9I2.

E. E. TRAFTON. AUTOMATIC CUT-IN FOR TELEPHONE REINFORCING DEVICES;

APPLICATION FILED MAYZ,19|2- V Patenred J 11110 13, 1916.

2 SHEETS SHEEI 2.

ERNEST E. TRAFTON, OF YOBTLA ND, MAINE.

AUTOMATIC CUT-IN FO B TELEBHONE REINFORCING' DEVICES.-

Specification of Letters Patent. Patented J un 13, 1916,

Application filed Ma 7,1912. Serial No. 695,649.

To all whom it may concern: I

Be it known that I, Ennn's'r E, TRAFTON, a citizen of the United States, residing in Portland, county of Cumberland, and State of Maine, have invented a new and useful Improvement in Automatic Cut-Ins for Telephone Reinforcing Devices, of which.

the following a description.

This invention relates to. apparatus for reinforcing or intensifying theelectrical 1m- -pulses received over a telephone line from any distance, and has special reference to means applicable to the usual desk-stand transmitter to adapt the same for use, in

connection with my reinforcing apparatus made the subject of my application filed January 10, 1912, No. 670,387.

Among the objects of my invention may be noted the following: to provide means, applicable to the well-known desk-stand transmitter of telephone systems, which will prevent wasting of the batteries of my reinforcing apparatus when the latter is insorted in the telephone'circuit; to provide means by which the desk-stand transmitter will automatically bring into action my reinforcing apparatus, or other impulse/ reinforcing device,- when said transmitterjs brought into use; to provide a deviceapplicable to the deskstand transmitter,* for the purpose above stated, Without changing the appearance, form, or structure of-said transmitter i to'prov-ide a means, applicable to a desk-stand transmitter, which may be operated automatically, through the medium of the receiver-hook, to open and close the battery circuit of my aforesaid reinforcing apparatus; and to provide a simple, cheap and efficient-means, for application to desk-stand transmitters, by which to set my reinforcing apparatus in operation when the, telephone receiver is lifted fromthe hook. i v

With the above objects in view, and others which will be detailed during the course of this description, my invention'consists in the parts, features and elements and combinations of elements hereinafter described and claimed. r To'give a clear understanding of my invention. I. have provided drawings wherein: -Figure 1 is a perspective view showing a deskstand transmitter with my reinforcing apparatus connected therewith according to my invention; Fig. 2 is a sectional, front elevation showing my invention applied. to

- have no time t0 bother'with a lot ments and devlces and have found fault side elevation, similar to Fig. 2, with the receiver omitted; and Fig. 4 is a diagrammatic view of the circuits and instruments laid out according to my invention.

"the transmitter-stand; Fig. 3 is-a sectional,

, Primarily, it should be understood that,

-my reinforcing apparatus, made the subject of-my aforesaid application, intensifies and reinforces the electr cal impulses received over a telephone line and may be in shunt,

or in parallel, with the telephone receiver and in series with the main line, and that, i

in practical use of the instrument, it has been found that the operator, in his hurry, or throughcarelessness, will not replace the receiver of the reinforcing apparatus to its proper place. This has caused a great deal I of trouble with the instrument because the batteries Waste rapidly and the efliciency of the reinforcing apparatus is, consequently, diminished. Moreover, train des at chers with being compelled to think of always hanging up the receiver of-the reinforcing apparatus in order to keep the instrument in condition and always find it so when required.

My present invention overcomes the obtion Whatever on thepar of the operator.

Referring to the drawings, the numeral 1 indicates the base of the desk-stand, 2 the tubular upright, 3 the transmitter, 4 there ceiver, and 5 thereceiver-hook. I

My reinforcing apparatus is indicated by -ectidns noted and requires no care or-atteninstru- 6, and isalways sealed, asat 7, to prevent tampering with the same.

The receiver of the reinforcing apparatus is indicated at 8, and may be disposed .in

any way convenient for the operator. When the receiver 4 is lifted from or placed on the book 5, it makes or breaks a contact at 9, through the medium of the controller spring 10, engaging the hook at the point 11, the hook being pivotally supported'at I 12. The insulation for the controller-spring and contacts is as usual and the leads of the transmitter are indicated at 13, and those of the receiver are indicated at 14, 15.

Referring to Figs. 2 and 3, the contacts 16, 17, are shown insulated at 18, from the contacts 9, and from each other in suitablemanner, and all supported by the same plate 19, extending lengthwise of upright 2. This makes a compact arrangement and on ables the spring 10, under the action of the hook 5 to control the two sets of contacts at one time by merely lifting and replacing the receiver 4.

In the diagram of Fig. 4, it will be seen that the tip lead of the telephone line is indicated at a, and runs to the transmitter 3, through lead 13, through the controllerspring 10, contacts 9, and ring leadb, through the primary of the induction-coil. Across the main line is bridged the circuit containing the bells and condenser shown by the conventional signs. In series with the condenser, through the lead 0, is the secondary of the inductipn-coil and the standard receiver 4, the circuit through which, by way of lead 15, is opened and closed by operating the hook 5, and the return lead of which circuit is back through the primary to the main line. The receiving element of my reinforcing apparatus, the latter being indicated by 6, is bridged across the terminals of the receiver 4, through the medium of the leads d and e. The reinforcing apparatus circuit includes in series the receiver 8, battery 20, the variable-resistance button 21, and frame of the said reinforcing apparatus,

' the circuit from the batterybeing indicated by f, and running to the said button 21, and from the frame of the reinforcing apparatus through the lead 9 to the inner one of the contacts 16, and from the outer of the contacts 17, back through the lead '11. to the receiver 8.

From the foregoing, it will be seen that the arrangement of the parts is such that, when the operator desires to use the ordinary telephone for either transmitting or receiving a message, the same action on his part which brings into play the functions of said telephone will automatically bring into play and action my reinforcing apparatus, since, when he receives the signal of a message, or desires to transmit a message, and lifts from the hook 5 the receiver 4, my reinforcing apparatus is automatically set in operation through the medium of the controlling-spring 10, operating upon the contacts 9, and the latter upon the contacts 16 and 17. This automatic operation, of the two sets of contacts, bringsmy reinforcing apparatus into operation without any further effort or concern on the part of the operator and immediately imposes upon the telephone circuit the reinforcing and intensifying action of my reinforcing apparatus.

In the foregoing description, I have described my inventionas having particular reference to cutting into the telephone circuit automatically my reinforcing and mtensifying device, which has become known as a Relayfone and made the subject of my aforesaid application; but I desire it to be understood that my present invention 18 not limited to bringing into play the particular form of instrument, in connection with which I have illustrated my invention.

My present invention comprehends, broadly the idea of means of providing a device or mechanism automatically operatmg, through the medium of the deskstand of the ordinary telephone system, any form of means, mechanism, or device capable of magnifying, intensifying, or reinforcing the electrical impulses passing over the lines of the telephone system. Hence, in my claims, I purpose covering my said invention in the broadest possible terms, as I believe my self to be a pioneer in this connection.

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

1. In combination with a telephone set and its circuit, which latter is normally open; a reinforcing apparatus shiint to the receiver of said set; an au'x'iliary receiver; a battery in series with" the latter having a circuit including said reinforcing apparatus and being normally open; and means for simultaneously closing both of the open circuits.

2. In combination with a telephone set and its circuit, which latter is normally open; a reinforcing apparatus in shunt to the receiver of said set; an auxiliary receiver; a battery in series with the latter having a circuit including said reinforcing apparatus and being normally open; and means for closing both the open circuits including a member for supporting the receiver of the said set.

3. In combination with a telephone set and its circuit, which latter is normally open; a reinforcing apparatus in shunt to the receiver of said set; an auxiliary re ceiver; a battery in series with the latter having a circuit including said reinforcing apparatus and being normally open; a pivotally supported hook for sustaining the receiver of the said set: and means coiiperating with said hook for closing both of the normally open circuits when the said hook is lifted.

4. In combination with a telephone set and its "'circuit,which latter is normally open; a reinforcing apparatus in shunt to the receiver of said set; an auxiliary receiver; a battery in series with the latter having a circuit including said reinforcing apparatus and being normally open; and means including a resilient member arranged coiiperatively with the terminals of one of the open circuits and normally out of contact with the latter, and a device for causing said resilient member to close the said two open circuits by engagement thereof with said terminals.

In combination with a telephone system including a deskstand, transmitter and receiver, together with their circuits; of terminals for the receiver comprising normally separated resilient members; a rein-' forcing apparatus in shunt to the said receiver; an auxiliaryreceiver and a battery.

in-series in a circuit which also includes in series the reinforcing apparatus and'the terminals of which circuit comprise normally separated resilient members arranged in 00- operative relation to the resilient' m'emb is of the main receiver within the said stand; means for supporting the main receiver pivterminal membersso as to close the said'two open circuits.

6. A telephone system comprising the usual set and circuits therefor, in combinahon with a reinforcing apparatus in shunt to the receiver of the set and in series in the main circuit; an auxiliary receiver and soiirce of electrical energy in series in-a cirwit which also includes said reinforcing ap paratus and which said circuit is normally open and the terminaI-members of which are arranged in-coopemtiye relation tojhe terminalmembers of-the're'ceiver of said set;

and automatic-means for closing the circuit of saidreeeiver and'thecircuit of the auxil- ,iary receiver and connect the two receivers 'electrically.

7, In a telephone system and in combination with the telephone set thereof and its several circuits; a reinforcing apparatus in shunt tothe receiver of said-set and in sefies with the main circuit of the system; an iuxiliary receiver having in series therewith t source of electrical energy and a circuit, vhich also includes a reinforcing apparatus n series with-the latter two elements and the erminals of which are normally separated nd arranged in cooperative relation to the ormally separated terminals of the memers of the said set; and automatic means or closing all the said terminals, so as to .multaneously close the three open circuits to connect the reinforcing apparatus in series in the main circuit and in shunt to the main receiver and connect the auxiliary receiver and source of electrical energy in series with the main receiver.

8. The combination, in a telephone system, of a main receiver, a stand carrying a movable member for supporting the main receiver, a pair of movable contacts for the circuit of the main receiver carried bythe stand, an auxiliary receiver, a second pair of movable contacts forthe circuit of the auxiliary receiver carried by the stand, and

a releasable member normally tending to force said pairs of contacts together, said 7 member being controlled by the movable member whereby, when the main receiver is lifted, the circuit thereof and of the auxil-' iary receiver will be automatically closed, and when the main receiver is hung up said circuits will be automatically broken.

9.'The combination, in a telephone system, of a main receiver, a stand carrying a movable member for supporting the main receiver, a pair of movable contacts. for thecircuit of the main receiver carried by the stand, an auxiliary receiver, a second pair of movable contacts for the circuit of the auxil' iary receiver carried by the stand, a releasable member normally tending to forcesaid mg controlled by the movable member' whereby, when the main;-receiver is lifted,

the circuit thereof and of the auxiliary i'eceiver will be automatically closed, and when the main receiver is hung up said circuits will be automatically broken, and insulating means extending between said contacts for electrically separating one pair of said contacts from the other.

In testimony whereof I have hereunto signed my name in the presence of two subscribing witnesses.

- ERNEST E. TRAFTON.

Witnesses:

CHAS. MoC. CHAPMAN, B. P. VVILTBERGER.

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