US1454773A - Telephone attachment - Google Patents

Description

G. W. SUMNER M ys 1923 Tic-11.1.

Patented May8,1923. I LdMJ'Zd;

- snonsn w. SUMNER, onnononnsrnn, NEBRASKA, ASSIGNOR OF THREE TWENTY:

rrnrns :T01RUSELL MoonBnnY, THREE TWENTY-FIFTHS .cro trnoivrns GRAY, THREE TWENTY-FIFTHS r ROBERT c. PANTER, AND THREE TWENTY-FIFTHS r0 J. W BYERS, ALL or nononnsrnn, nBBnAsKA. t

T LnrHonn ATTAC MENT; f

Application filed Octob r 11, 1921'. Serial No. 507,008.

To all whom it may concern:

Be it known, that I, Gnoncn W; SUMNER, scribed and claimed.

a citizenof the United States, residing at Reference will 'now'be had to the accom- Dorchester, in the county of Saline and panying drawings forming a part of this State ofNebraska, have invented certain specification, wherein: v a 1,

new and useful Improvements in Telephone igure 1 is a side elevation showing my Attachments of which the following is a invention or attachment applied in -'coop'eraspecification. v r tive relation to the receiver hook'i'o'f 'a con- The present invention appertains to 1m-, ventional telephone instrument.

loprovements in attachments for telephones de- Figure 2 is a side elevation of the consigned for cooperation with the receiver structlon shown by Figure 1. hook of the ordinary conventional telephone Figure 3 is a sectional view on the line equipment, and by means'of which said hook 3-3'0f Figure 1. f may be held temporarily in a positionwhich Throughout the following detailed de- 5 prevents closing of the transmitter circuit, scrlption and on the several figures of the for the'purpose of saving the battery curdrawing, similar parts are referred to by rent and eliminating the noises likely to like reference characters. i v interfere with conversations over the talk- In the drawing 1 designates the side board i oirguits of th 11 7 of the telephone instrumentbox through of parts ton-be hereinafter specifically I ,2 The invention is devised primarily for which'the receiver hook-2 projects. This 7o use in conjunction with selective ringing hook is fulcrumedat 3 and is provided with or party line systnns, where the various a laterally extending arm 4 arranged to cosubscribers are able to listen in upon the act with the free end of the hook switch conversations of the talking parties. spring 5. This spring carries a button 6 25 As is well known, muchiannoyance is arranged to coactwith the series'of circuit occasioned by those'subscriberswho listen closing membersorleaVesZ. in because of the noises in the rooms of The foregoing constructionis of" a' conthose subscribers who are listening only, ventional type and it will be understood by due to the fact that theseare transmitted those skilled in the art to which the inventhrough the transmitters of the various intion relates that when the receiver is posis0 struments, the transmitter circuits all being tioned upon the hook 2 the spring 5'is' held closed. In addition to this disadvantage out of coacting relation to thecircuit' conthere is a necessary drain upon the battact members 7 adjacent thereto inwhich teries of the local instruments because of position both the line andtalking or transthe closing of the battery circuit which is mitter circuits are open. When the renot in use, and it is therefore the object of ceiver is displaced from the hook 2 the this invention to provide afsimple attachspring 5 brings the first two of the circuit ment which may be readily arrangedso as closing leaves into contact, closing the line to limit the movement of the receiver hook circuit, this taking place upon the partial .4 and permit the latter to close onl the listennormal movement of the hook 2 and upon ing circuit when the party desires to listen the completion of the movement of this i a in upon the line only, the attachment includhook the third circuit closing member is ing means for releasing the receiver hook to impinged, thus closing, the primary or permit it to complete its normal full movetransmltter clrcuit. I 7 a i v 45 ment and thereby close thetalking circuit The'attachment which forms thesubject: at the will ofthe operator of the local telematter of this invention comprises a hook phone. member 'Wl'llCll is pivotally mounted upon The above and such other objects as may the side boardl by a screw 8 adjacent to the hereinafter appear are attained by the novel receiverhook 2 and said attachment is com- 50 construction, combination and arrangement posed of the relatively fixed section 9 to loo which is connected the adjustable section 10 having a lateral bent extremity 11 arranged to engage over. the receiver hook 2. To the fixed section 9 is connected an actuating arm 12 the outer end 13 of which is bent at rightangles to form a thumb piece. The arm 12; is connected to the hook member of the attachment by means of the set screw 14 which also constitutes the adjusting means for the adjustable section 10. Near the outer end, the arm 12 is provided with a guide slot 12 through which the screw 15 extends into the board 1 and a spiral spring 16 is connected at one end to this stationary screw and at its other end to the screw 14 for the purpose of placing tension upon the hook member normally holding the extremity 11 across the path of movement of the receiver arm 2.

From the foregoing it will be obvious that when the party desires to listen in upon the conversation without talking over the telephone line, he removes the telephone receiver from the hook 2 and the latter is caught at an intermediate position by the hook 11 which is so arranged that it will intercept the receiver hook at a point where only the first two contact members are brought together. The listening circuit being closed, the conversation may readily be heard, but since the talking circuit is open the noises in the room of the instrument are prevented from being transmitted through the transmitter, and furthermore, the battery current is not used. When it is desired to .talk over the instrument, the operator presses upon the end of the arm 12 thereby shifting the hook 11 rearwardly and disengaging the receiver hook so as to permit it to move its normal full swing bringing the transmitter .circult into-operation. In this position the end of the hook 11 is held in ment.

contact with the side of the receiver hook and immediately the receiver is hung upon said'hook, the downward movement of the latter will .permit the hook member of the attachment to again assume its normal position overlying the path of upward movement of said hook. Thus it will be seen that the attachment is always in position for-performing its function but mayreadily be displaced whenever it is desired that the talking circuit shall be closed.

One'o'f the important features of this simple attachment is the provision for adjust- To' this end it is only necessary to attach the device by the screw 8 in a reason ably approximate position beneath the receiver hook and the section 10 is then adjfusted by the screw 14 so as to occupy a position which will permit the movement of the receiver hook only to that point where it-willinsure o f the closing of the line circuit. The set screw 14 is then tightened and the attachment will remain adjusted so far as this particular instrument is concerned.

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

1. A telephone attachment of the class described, comprising a pivotally mounted stop member arranged adjacent to the receiver hook of the telephone instrument and adapted to be swung into the path of movement of thereceiver hook to intercept the movement thereof, and a slide connected to the said stop member for moving the same.

2.' A telephone attachment of the class described including a hook member pivotally mounted adjacent to the receiver hook of the telephone instrument and adapted to be moved into the path of the saidreceiver hook .to intercept the movement thereof when the receiver is disengaged fromthe receiver hook, tension means normally tend ing to swing the hook member into the path of the receiver hook, and an operating member mounted upon the telephone instrument and operatively connected with the hook member for moving the latter against the action of the tension means 'i-nto inoperative position.

3. A telephone attachment of the class described comprising a hook member adapted to be mounted adjacent the receiver hook of the telephone instrument, said hook member embodying an adjustable section with which-v said receiver hook is .adapted to impinge, and an actuating slide connected to said hook member .at an intermediate point for shifting .the latter about its pivotal mounting. 7

4:. An attachment for telephones of the class described comprising a sectional hook member adapted to be pivotally mounted adjacent to the receiver hook of the "telephone instrument, spring means normally tensioning the hook member'to hold it in a position intercepting the path ofmovement of the receiver hook, an actuating arm 00- acting with said hook member, and guide means for said actuating arm.

5. A telephone attachment oft he class described including a movably mounted hook member, and yielding means normally tending to swing the same into the path of movement of the receiver hook o1: the telephone instrument to prevent a full move ment of the said receiver hook when the receiver is lifted therefrom, said hook member being movable away from the path of the receiver hook when full movement'thereof is desiredand the nose ofthe-hook member abutting yieldably against the receiver hook when the latter has reached the limit of its movement.

6. A telephone attachment of the classde} scribed, comprising a swinging arm, a hook member having'the shankthereof adjustably connected to the swinging arm and adapted and an actuating member 'operatively conto be moved into the path of the receiver nected to saidhook member by the said fashook of the telephone instrument to intertening member for swinging the arm and 10 cept the movement of the said hook when hook member. r 5 the receiver is removed therefrom, a fasten- In testimony whereof I afiix my signature. ing member adjustably connecting the shank of the hook member to the swinging arm, n GEORGE W. SUMNER.

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