US960731A - Telephone-receiver. - Google Patents

Description

W. F. TAYLOR. TELEPHONE RECEIVER. APPLIGATION FILED AUG. a, 1908.

Patented June 7, 1910.

2 SHEETS-SHEET 1.

W; P. TAYLOR. lTELEPHONE RECEIVER. APPLICATION FILED AUG. 8, 1908.

Patented June '7, 1910.

2 SHEETS-SHEET 2.

UNITED STATES PATENT. oren.

WALTER F. TAYLOR, 0F BROOKLINE, MASSACHUSETTS, ASSIG-NOR T0 HOLTZERCABOT ELECTRIC COMPANY, A CORPORATION 0F MASSACHUSETTS.

TELEPHONE-RECEIVER.

Specification of Letters Patent.

Patented June a, icio.

Application inea .Agust s, 190s. serial No. 447,575.

.specicatiom like letters on the drawings representing like parts.

The present invention `relates to a telephone receiver, and is embodied in aireceiver of that type commonly used for tes ing purposes, or sometimes for telephoning,inwhicl1 type the circuit controller -is contained in the receiver itself, instead of being controlled by a switch hook, or similar device.

The purpose of` the invention is to simplify the construction so that all the parts are easily accessible for repairwhen the cap and diaphragm are removed.

The invention further relates to means for locking the diaphragmafter the same has been adjusted with relation to the polar eX- tremities of the magnet.

In accordance with the invention, the switch terminals are mounted on a support of insulatin 'material just below the diaphragm an arranged to be bridged by -means of a rocker arm provided with a suitable external actuating device located outside of the recelver case, the o ening of the vswitch being manually contro ed or automatically controlled, as may be desired. The bridging member of the switch is also located on the outside of the support ofinsulating material, so that all the` working parts are exposed when the cap phragm have been removed.

Figure 1 is a top plan view, on an enlarged scale, of a receiver embodying the invention, with the ca and diaphragm removed from Ythe case; ig. 2 is a transverse section of the same on line m2, Fig. 1, with the cap and diaphragm on; Fig. 3 is' a view, similar to Fig. 1, showing a modification; Fig. 4 is a top plan view with a and dia- `portion of the cap and diaphragm broken away, this view showing a further modification; and Fig. 5 is an elevation of the device shown in Fig. 4, with a portion of the case broken away to show the switch withln.

The receiver, embodying the invention, comprises the electro-magnets a contained 1n an inclosing case b, across the face of which,

as shown in Fig. 2, the diaphragm c is held by the removable cap d, having an opening d2 1n the center. The cap and diaphragm are fastened together, the diaphragm being held in place by a ring c2. The cap is screwed on the casing, and the position of the diaphragm with relation to polar eX- tremityv of the magnet can thus be adjusted by turning the cap. After the proper ad- ]ustment has been made, the cap is prevented from turning by a locking device of any sultable or usual construction, said locking device being herein shown as consisting of a member c3 radially mounted on a pin c4 rotatably mounted in the case and having a j screw head` c5 at the back of the case, so that it can be turned to force the member c3 into engagement with case and cap, as shown. The circuits through the magnets are the same as those commonly employed, and need -not, therefore, be traced in connect-ion with this description. The circuit terminals, howl ever, in accordance with the invention, consist of springs'e and f which are mounted fon a support h. of insulating material and l adapted to be bridged by means of a rocker i g in order to close the circuit when the receiver is in use. This rocker g is mounted I on a vertical pivot vg2 located between the terminal springs e and f and having a bearing in the support h, so that by moving said rocker on its pivot from the position shown in Fig. 1, one end of the rocker will come in contact with the terminal f without disconnectin'g thev other end of the rocker from the terminal" e, so that the two terminals are bridged and the circuit is closed. This rocker g' is provided with any suitable actuating device or devices conveniently located outside of the case b.

In'the construction shown in Fig. 1, the pivotalsupport g2l is provided atfits lower end with a cross arm g3 having push rods g4 and g5 pivotally connected with it atop-V posite ends and extending through openings. through the side of the case b. In this constructlon, when the receiver is to be used, the push rod g4 is operated, thus bringing the rocker g into position to close the circuit, and when the receiver is no longer in use, the push rod g5 is operated to break the circuit. v

In the construction shown in Fig. 3, the opening of the circuit is automatic, the terminal e being replaced by a spring el which tends to hold the rocker g in the position shown, except when' the push rod g4 1s operated to move the rocker against the stress of the spring. In this case, the person using the receiver must keep the push rod g4L depressed while the receiver is in use, thus closing the circuit through the spring c1", rocker g, and contact memberf, the circuit, however, being automatically opened as soonas the push rod y* has been released.l

In Figs. 4 and 5, the actuating member for the rocker g is shown as consisting of a swinging radial arm g4 connected with the pivotal support for the rocker g, and projecting outward through an opening or slot b2 in the wall of the case b. In this conv struction, the switch is opened or closed by a lateral movement of the arm g4, the on and off position beingl indicated by the words printed upon the receiver, as shown in Fig. 5.

The magnet cores' are provided at the back with lateral extensions 2 adapted to be supported against the rear wall of the case b. The support h is secured to the lateral exl tensions 2 by means of bolts 3, the said support L being separated from the extensions 2 by one or more interposed metallic members 7c, thus affording a space behind the support for the leading-in wires, and at the same time bringing the terminals and the switch which are on the face of the support near the front of the receiver just below the cap.

Claims.

1. In a telephone receiver, a casing provided with a cap and dia hragm adapted lto be secure to the open en of the caslng; an electro-magnet contained in said casing; a

supporting member of insulating material located between the diaphragm and the base of the electro-magnet, 'thereby aordinga space within the casing for the leading-1n wires; switch terminals mounted on the outer surface of the said support; a switch also mounted onv the outer surface of said support and adapted to bridge the' terminals; and an actuating devicefor said switch extending through the wall of the casing, substantially as described. g

2. In a telephone receiver, the combination with the case; of the electro-magnet therein; a support of insulating material surrounding said electro-magnet; switch terminals mourted on the ouer surfaceuof said sup ort; a rid mem er ivota y connectped with sailnsgilpport anld locatedbetween said terminals; and a push rod connected with said member at one side 'of the pivotal support thereof projecting outward through an opening in said receiver case.

3. The combination with the receiver case; of the screw-threaded cap and the diaphragm secured in said cap; the electromagnet; a locking member consisting of an arm adapted to be forced against the inner wall of the casing to hold the cap in its Iadjusted position; and a rotating actuating member from which said arm extends radially, said member being accessible'at the outside of the case.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

. WALTER F. TAYLOR.

Witnesses:

M. E.'CovENEY, JAMES J. MALONEY.

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