US1814458A - Telephone transmitter silencer - Google Patents

Description

July 14, 193.1. i JfEfsTE'lNBERG TELEPH'NE TRANMITTER SILENCER v Filed July 28, 1930 FIGA Patented July 14, 1931 PATENT OFFICE kJAMES EVER-ETT STEINBERG, OF OKLAHOMA CITY, OKLAHOMA TELEPHONE TRANSMITTER SILENCER Application filed July 28,

My invention relates to a silencer for telephone transmitters. Y

The objects of my invention are to provide a device ofpthis classv which is new, novel, practical and of utility; which will be eX- t-remely simple in construction; which may be easily and quickly attached to any telephone transmitter without change in the transmitter; which will be cheap in manufacture; which will be neatvand pleasing in appearance; which will be positive in action; which will eliminate noises within aI room from entering the transmitter in the room and being conveyed to the receiver of the l5 Same telephone; which will have exterior projections, any of which will act to silence the transmitter; and, which will be eiicient in accomplishing all the purposes for which it is intended.

Many times at the present, it is rendered diiicult to hear a party at the other end of a. telephone line due to the fact that noises in the receiving room are conveyed through the transmitter to the receiver in the room. Applicants device is designed to prevent this difficulty. It is also designed so that it may be operated by a person with the hand which is holding the receiver or with the hand which is holding the telephone.

With these and other objects in view as will more fully appear, my invention consists in the construction, novel features and combination of parts hereinafter more fully described, pointed out in the claims hereto appended, and illustrated in theaccompanying one-sheet drawing, of which,

Figure 1 is a fragmentary elevational view of the front cap of the device;

Fig. 2 is an elevational'view of the device with the cap removed.

Fig. '3 is an elevational sectional view through the device installed upon a usual telephone transmitter.

Fig. 4 is a plane view of a portion of the device showing its development;

Fig. 5 is a perspective view of the portion of the device shown in Fig. 4 after it has been formed; and,

Fig. 6 is a perspective view of one of the diaphragm contacting members.

Serial No., 471,126.

Like characters of reference designate like parts'in all the figures.

It is understood that various changes in the form, proportion, size, shape, Weight and other details of construction, within the scope of my invention may be resorted to without departing from the spirit or broad principle of my invention and without sacrificing any of the advantages thereof; and it is also understood that the drawings are to be interpreted as being illustrative and not restrictive.

One practical embodiment of the invention as illustrated in the drawings comprises:

A vcup shaped member 1 having an annular exteriorly threaded flange 2 upon its front face, and havingr an exteriorly threaded projection 3 upon its back 4. Said back 4 is provided with a bore or perforation 5 which extends from the interior ot said member outwardly through said projection 3. Said perforation 5 is not circular` in form but is formed by two wing shaped apertures 6 and 7 between which hemispherical projections 8 are located. Said projections 8 are each bored as shown at 9.

A substantially U-shaped member 10 having downstanding legs 11 and a cross-member 12, and having a pair of upstanding parallel strap members 13 located upon said'A cross-member 12 is provided with legs 11 extending into and through said perforations 9 in said projections 8. Said strap members 1.53 are each alinedly perforated as shown at 14 and said legs 11 are formed with hollow cylindrical sockets 15 at the lower end of each. Said sockets 15 are each adapted to rigidly embrace a diaphragm contacting member 16` best shown in Fig. 6. Said member 16 will preferably be made of some resilient sub-4 stance such as rubber or the like and will be attached within said socket 15 in any usual manner such as gluing or cementing. As may best be seen in Fig. 3 said member 10 extends slightly outward through the cavity of said cup shaped member 1. Said member 10 is provided as a means for causing said members 16 to selectively Contact a usual d iaphragm 17 of a usual telephone transmitter 18. As a means for actuating said member 10 to move forward or away from said diaphragm 17, I provide a rod 19 which extends transversely through alined perforations 20 in opposite sides of said cup shaped member 1. Said rod 20 is a length sufficient to extend slightly past the periphery of said member 1 on each of its sides and'centrally is flattened as shown at 21. Said fiattened portion 21 extends between said strap members 13 of member 10 and is provided centrally with a transverse slot 22. Said slot 22 is not a straight slot but has its central portion nearer that edge of said flat portion 21V which is most remote from portion 12 of said member 10. A pin 23 is provided through said perfor/ations 14 in members 13 and also through slot 22 and theends of said pin 23 rest snugly. yet movably within slots 24 in a web 25 which isprovided integrally acro said cup shaped member 1. Transverse pins 26 which preventthe longitudinal movement of said pin 23 in said perforation 14 and said slot 22 are providedy through said pin 23.

i Said rod 19 is further provided adjacent each end of said fiat portion 21 with transverse pins 27 against which is placed washers 28 which act as a means for seating one end of a compression spring 29,V the other end of whichv bears. against the interior wall of'said member 1. A plurally perforatedv cap 30 having.rk an interiorly threaded annular flange 31 is threadedly disposed upon said flange 2 of said member 1 for forming a cover tothe cup shaped member 1. A screen 32 is provided between said flange 2' and said cap 30 over the entire inside faceof said cap 30.

The assembly of the device is described as follows: f

yContact member y16 will? be dipped in glue or some cementatious substance and placed in socket 15 of legs 11 of said member 10. Said legs 11 will then be inserted within said perforations 9. Pins 27 and washers 28 and springs 29'will be installed upon said rod 19. One end of rod 19 will be inserted through one of the alined perforations in thefside of mid member 1 until the other end of the vrod may be slippedV into the cup shaped member and then slid outwardl through the other oney of said alined' per orations. This Will bring'said parallel strip members 13 into position to embrace the flat portion 21 of said 4rod 19. Pin 23 will thenbe insertedthrough perforations 14 andthrough said slot 22,.and the transverse pins 26 will be installed. yThis will bring said pin 23 to rest within said slots 24 in said web 25. Cap 30 will then receive saidscreen 32 after whichl it will be threaded upon flange 2 of saidY member 1. Thisy will complete they assembly of the device.

In installing the device upon transmitter 1.8, the usual mouth piece of the transmitter will be removed and projection 3 will be threaded into the Vusual opening thereof. This will complete' the installationv of: the device. In operation manual pressure exerted upon either end of said rod 19 will cause said member 10 to be forced into contact with said diaphragm 17 by the action of said slot 22 upon said pin 23. Said slot 24 in web 25 will prevent any transverse movement of said pn.23,.but will permit themovement of said pintoward or away from said diaphragm 17. When said members 16 are forced intocontact with said diaphragm 17 the vibration of the diaphragm due to soundsin the room will be stopped. Consequently the diaphragm will not act to transmit any sound whatever.

Obviously, the invention is susceptible of embodiment in forms other than that which is illustrated inthe accompanying. drawings and described herein, and applicable for uses andpurposes other than as detailedand I therefore consider as my own all. such modi- .cations and adaptations and other usesof the form of the deviceherein described as fairly fall within the scope of my invention. Y Y

, Having thus described my invention, what isclaimed and desired to'be securediby` Letters Patent,.is: Y

1'. A transmitterl silencer embodying open faced cupshaped member having` an -aperture'through its rear wall, said wall adaptedto connect the diaphragm casing` of a sound transmitter,.a transverse rod. extending. throughr and projecting outwardlyy from said member, and means, for contacting the transmitter diaphragm upon longitudinal movement of said rod.

2.n A. transmitterV silencer embodying an open faced cup-shaped member having an aperture throughl its rear wall, said wall adapted to connect the diaphragm casing of a sound-transmitter, a transverse rod extending through and projecting outwardly fromV said member, a plurally perforated cap'` for saidopen face, andmeans for contacting the transmitter diaphragm upon longitudinal movement of said rod'.

3.A transmitter silencer embodying an@ open faced cup-shaped member having an aperture through its rear wall said wall adapted to connect the diaphragmcssing; of

a sound transmitter, a transverse rod extendmg through and'r projecting outwardiy freinv rear Wall of said'cup-shaped member and" having its leg connecting member slidably engaging a deformed slot in'said transverse rod.

Organization as described in claim 3, in which said holdingfmeansl comprises a. transverse pin through said rod, a washer and a compression spring adjacent each end portion of said rod and Within said cup shaped member, one end of each of said springs seated upon one of said Washers, their other ends bearing against the inner wall of said cupshaped member.

JAMES EVERETT STEINBERG.

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