US769125A - Telephone substation outfit. - Google Patents

Description

110,769,125. l PATENTEDAUG. so, 1904.

' B. B,Y`AXLEY.

,-TELBPHUNB sUBsTATIoN OUTER;-

ArlPLIcATIoN 'r1-LED' Dnc. 2s, 19o3.

plm IA.

UNITED- STATES y ERNEST E. YAXLEY, OF CHICAGO, ILLINOIS.

Patented August 30, 1904.

' TELEPHONE suBsTATloN oUTFlT. 7

SPECIFICATION forming part of Letters Patent No. 769,125, dated August 30, 1904. Appiicationneanmmher 28,1903. seriaiuaisaeea (Numan.) v i To a/ZZ whom it may concern:

Be it known that I, `ERNEST E. YAXLEY, a citizen of the United States,fresiding at Chicago, in the county of Cook and State of Illi y nois, have invented a certain new and useful in the telephone-receiver to such an extent as absolutely to interfere with satisfactory telephonic communication. Especially is this the case with certain types o f telephone apparatus,

such as include large panel-boards carrying the gongs. This defect is particularly noticed where such sounding-boards form the covers for boxes that contain and support the entire telephonie apparatus. The difficulty mentioned is present in a variety of telephonie outfits and is particularly noticeable in subo station outfits," including calling generators and batteries, for 1n this type of apparatus larger boxes are required to contain the rgenerators and 'batteries The vibrations by acting upon the sounding-board box-cover operate the transmitter to produce the objectionable sounds inthe receiver. The invention, however, is also of service in telephonie outfits that exclude generators and batteries such as are present in common battery systems.

In accordance with my invention I provide, in connection with the signal-receiver,a sounddampener, which is brought into operationafter the signal-receiver has been actuated.

-This sound-dampener is preferably'in the form of a swinging arm that is normally out of mechanical engagement with the gongs of the signal-receiven'but which is brought into engagement with the said gongs after the signal has been received to eiiecta discontinuation of the vibrations in the gongs, so that mechanically-operated dampenerbeing moved against the gongs by means vof the switchhook when said hook is relieved of the weight of the receiver. I do not wish to be limited, however, in all embodiments of my invention to the telephone-receiver control of the sound'- dampener, as my invention is capable of other embodiments. For example, I have devised an arrangement wherein the sound-dampener is normally applied to the gongs and is controlled by an electromagnet that is included in the generator and bell branch and is energized as long as the. generator is in operation, thereby effecting the removal of the sounddampener during the presence of the signaling-current upon the line both at the calling and called stations. i Another embodiment of my invention is one wherein the sound-dampener is controlled at the exchange. apparatus being' provided that includes at each substation a dampener-applying electromagnet through which circuit is completed by switching apparatus at the eX- change. Thus an operator after transmitting a signal may causethe vibrations in the gongs to cease by effecting the operation of this switching apparatus.

Another embodiment of my invention is one wherein the dampener, While being controlled by the telephone-receiver, is not mechanically applied through the agency of said receiver, but is rather electrically controlled by the receiver, preferably through the agency of an electromagnet that is in direct coperation with the dampener and through which.

circuit is closed when the telephone-receiver lis removed'from its switch-hook, such'circuit being preferably completed through the diy rect agency of the telephone switch-hook.

This embodiment of my invention is very adaptable to systems wherein local batteries are provided for inclusion in circuit with transmitters at the substations through the agency of the telephone switch-hooks, the dampener-controlling magnet being included in the transmitter-battery circuit.

I will explain my invention more fully by reference to the accompanying drawings, illustrating preferred embodiments thereof, in which- Figure l is a front elevation, partially broken away, of a telephonie apparatus constructed in accordance with my invention. Fig. 2 is a side elevation of the structure shown in Fig. l. Fig. 3 is a plan view of a portion of the structure indicated in Figs. l and 2, partially broken away clearly to reveal details of construction. Fig. 4 is a rear elevation of the upper portion of the lid of the box, showing the sound-dampener. Fig. 5 is a diagrammatic view of the form in which the dampenercontrolling magnet is adapted for inclusion in circuit with the local transmitter-battery. Fig. 6 is a diagrammatic view indicating a telephone outfit having the dampener-controlling magnet in circuit with the generator and signal-bell. Fig. 7 is a view indicating a telephone system having substation apparatus equipped with a dampener-controlling electromagnet whose circuit is controlled at the exchange.

Like parts are indicated by similar characters of referencey throughout the different iigures.

In cach of the views there is indicated wellknown telephonie apparatus. I have shown a well-known form of gravity switch-hook a, pivoted at one end b and designed to `support a telephone-receiver c at its other end, which is free and forked. The box and cover desirably carry and contain the entire apparatus. There is indicated upon the front of the cover l the gongs f and a transmitter-arm g, while within the box is pivoted the switchhook a, it being understood in the embodiment of the invention indicated in Figs. l to 4, inclusive, that the bell-operating magnets, the battery, the induction-coil, and generator are all desirably within the box, as is well understood by those skilled in the art.

In the embodiment of the invention indicated in Figs. l to 4, inclusive, I have. provided a sound-dampener, preferably in the form of a bifurcated lever L, having a pivotal `mounting between its ends, the inner end of the lever preferably being unbranched and slightly inclined, as shown most clearly in Fig. 2, so that the switch-hook in being elevated will forcibly effect the rotation of said lever upon its mounting to effect the engagement of the ends of the branched or bifurcated portions of the lever with the gongs,

the free ends of these branches being desirably surrounded by collars or tips f', of leather or other suitable sound-dampening material, that are thrust into direct contact with the gongs when the switch -hook is elevated. The rotatable mounting of the sound-dampening lever is preferably accomplished by proyviding two bearings, one upon each side oi the central branch of the lever and each inclosing one of the bifurcated portions of the lever. It will be understood that when the telephone-receiver is removed from its hook said hook is elevated by means of a spring', such as whereupon the souud-dampener is applied as before stated. The mounting of the dampening-lever is closer to the collars /z than to the inner end of the lever, this inner end of the lever thereby preponderating in weight to effect the removal by gravity ol the dampener from engagement with the gongs when the receiver is replaced upon its hook. Thus it will be seen that in the apparatus indicated in Figs. l to 4 the gongs will not be permitted eifectively to vibrate while the telephone-receiver is removed from the switch-hook, so that it becomes immaterial to what extent the cover d may act as a sounding-board.

In the embodiments of the invention indicated in Figs. 5, 6, and 7 l have shown elements of substation outfits that are alsoshown in Figs. l to 4, and have marked such elements with similar characters of reference.

In Fig. 5 I have illustrated an apparatus which may be substantially like that shown in Figs. l to 4 except that the control by the telephone-receiver of the souml-dampenrr, while being effected with the agency of the switch-hook, is not effected mechanically by the switch-hook, but is had with the agency of a dampener-controlling electromagnet in series with a transmitter-l)attery ym, the transmitter a, and the primary of an imluction-eoil 0, whose secondary 7) is included with the receiver c in the main telephone-line f7. Vhen the telephone-receiver is upon its swi tch-hook, the circuit containing the battery m and the magnet Z is open. When the telephone-receiver is removed from the switch-lwok, said circuit is closed, whereupon the magnet! operates the sound-dampening lever /t to cause it to engage a gong f (one gong only being shown for the sake of clearness) which has been previously rung by the bell-operating magnet fr, that may be operated by a magnetogenerator s at the calling or called substation or at the exchange. n

In Fig. 6 I have indicated a telephone substation outiit that is very similar to the outlit indicated in Fig. 5, like parts being' given similar characters of reference. In Fig. (5,

however, the dampener-controlling electromagnet Z instead of being included in circuit with the transmitter-battery is included m lOO - change there is illustrated oneend of a cord-7 sound-dampener being normally free from thev circuit with the magnetogenerator s and the bell-magnet r. In this form of the invention the sound-dampener is constantly in engagement with the gongs, except when callingcurrent is impressed upon. the ringer-magnet,`

either by the operation of the generator s at a calling or called station or bythe operation oi' the signaling-generator at an exchange,A

during which operation the magnet Z is energized to` effect the removal of the dampener from the gon gs, permitting the gongs to sound during and onlyduring the timethat. the sig-` naling-current is being impressed upon the line. l

In the common battery system shown in' Fig. 7 the telephone-receiver is, in accordance with well-known practice, included in a'closed local circuit with the secondary p of an induction-coil, whose primary 0 is adapted for inclusion in circuit with the main telephoneline'v through the agency of the switch-hoolzl when relieved of the telephone-receiver. The dampener -controlling electromagnet Z is in this embodiment of the invention included in a grounded branch that is connected with the.,

telephone.switch-hook by means of a normal contact provided therefor, while at the eX- circuit that includes a plug t, shown inserted within a spring-Jack u, constituting the oftice terminals of the telephone-line. The magnet Z is designed in the system shown inv Fig.`

7 to be controlled by the operatorby means of any suitable mechanism, there being shown one form of mechanism and apparatus, includ-. ing a circuit-controlling key e, which when depressed will include the grounded: battery w in circuit with that side of the telephoneline that includes the grounded magnetZ when the telephone-receiver is upon its'hook. The operator after signaling a called subscriber may 'depress the key u and stop the vibration of the called subscribers signalbell, the

useful4 feature in telephony, as the gongs are -frequently rung after the called party is ready to answer. l

It is obvious that manyl changes may be made in the various embodiments of my invention herein illustrated without departing from the spirit of my invention, and I do not, therefore,wish to be limited to the precise arrangements shown; but,

I-laving thus described my invention, I claim as new, and desire to secure by Letters Patent, the following:

' 1. A telephone substation apparatus having a signal-receivingbell provided with a sound-dampener controlled by the telephonereceiver, substantially as described.`

2. A telephone substation apparatus includ ing a signal-receiving bell, a telephone switch# hoolr, and a sound-dampener for the bell mechanically operated by the switch-hook, substantially as described.

3. A telephone substation apparatus including a signal-receiving bell, a sound-dampener forthe bell, and means controlled by the.

switch-hook for eecting the application of the sound-dampener to the bell, substantially as described.

4. Atelephone substation apparatusincludying a receiving-bell, a telephone switch-hook, and a sound-dampening lever pivoted betweenl its ends and adapted to be engaged at one end by the switch-hook when relieved of the telephone-receiver and adapted to engage at the other end the gong of the bell when rotated upon the removal of the telephone-receiver,

substantially as described.

5. A telephone substation apparatus having a signal-bell provided with two gongs having a common clapper, and a sound-dampener mechanically independent of the clapper and serving to engage the said gongs to prevent ringing, substantially as described.

6. A telephone substation apparatus ha ving a signal-bell provided with a clapper, and

a sound-dampener mechanically independent y ofthe clapper and operating to engage the gong element to prevent the bell from ringing, substantially as described. V

In witness whereof I hereunto subscribe my name this 23d day of December, A. D. 1903.

ERNEST E. YAXLEY.

Witnesses:

G. L. CRAGG, CARL H. CRAWFORD.

TOO

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