US1142600A - Shield or guard for telephones. - Google Patents

Description

R. lrLMAxwsLLI a SHIELD 0R GUARD FOR TELEPHONES.

APRLlcATloN FILED luLY 1. 1914.' v

l l 11425600.` PafenfedJune 3,1915.

'HE NORRIS PETERSCO.. PHPNLITHO.. WASHINGTUN. D. C..

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RUSSELL HOWARD MAXWELL, *0F TRENTON, .N'FIVVy JERSEY.

' .A- SHIELD OR'GUARD FOR TELEPHONES.

(Specificationof Letters Patent.

'Application ile'd Iulyl, 1914. Serial No.'848,`425.

To all whom t may concern Be "it 'known that HfI, v)R'UssnLL HOWARD MAXWELL, a citizen of the United Sta-tes, residing at Trenton, inthe county-of Mercer and State of N ew Jersey, :have invented new and useful Improvements in Shields or Guards for Telephones, of which the following is a specification.

This invention relates to improvements in shields or guards for telephones and has particular application to a cover V'for the mouth piece of the transmitter and the ear piece of the receiver.

In carrying out the present invention, it is my purpose to provide a guard or shield of the class described which may be readily applied to and removed from the particular instrument of the telephone set and which will be conducive to sanitation.

It is also my purpose to provide a device of the type set forth which will embracethe desired features of simplicity, efficiency and durability, which may be manufactured and marketed at a minimum expense and which may be readilv carried about the person and applied to the telephone instrument and removed therefrom. i

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinafter set forth in and falling within the scope of the claim.

In the accompanying drawing; Figure 1 is a plan view of a shield constructed in' accordance with the present invention. Fig. 2 is a perspective view taken from the rear of the device. Fig. 3 is a cross sectional view f through the shield showing the same as applied to the mouth piece of the telephone transmitter. Fig. 4L is a perspective view showing the shield as constructed to fit the ear piece of the receiver. Fig. 5 is a vertical sectional view through the device shown in Fig. 4 applied to the receiver.

Referring now to the drawing in detail and particularly to the form of my invention illustrated in Figs. l, 2 and 3, l designates a circular disk preferably of a diameter slightly greater than the diameter of the flared end of the mouth piece of a telephone transmitter and formed eccentrically with an aperture 2 and having the portion thereof concentrically of such aperture flared rearwardly as at 3 to provide a depression in the front face of the disk contiguous the aperture 2 therein and concentrically of such aperture.

ratentea .faire si, iai-af Suitably fastened to the `rear .face of the l disk concentrically yofzthe 'opening 'therein is a metal ring i vand projecting rearwardly from such ring and spaced apart equal dis'- tancesabout the same are securing posts 5.

'Connected tothe outerends of the securlng posts and held spaced apart from the aperture 2 and concentrically thereof is a relatively small disk '6 formed with apertures 7.

Fastened to the back face of the disk l at the long radius thereof is an arcuate shaped strip 8 curved to conform to the curvature of the disk and having the inner edge thereof formed with inwardly extending spring fingers 9 spaced apart equal distances and adapted to grip the adjacent portion of the telephone mouth piece.

In practice, the rear face of the disk l is placed against the outer edge of the mouth piece'with the fingers 9 engaging the top portion of such mouthpiece and move slightly downwardly so'as to increase the frictional contact between the fingers and the mouth piece whereby the disk will be securely held in place. In this position of the disk the aperture 2 is disposedapproximately cen--v trally of the aXis of the mouth piece of the transmitter and the rearwardly flared portion 3 of the disk serves to concentrate the sound waves and direct the same into the transmitter mouth piece through the aperture 2 and the openings'in the disk 7 In the form of my invention shown in Figs. 4 and 5, the opening 2 is disposed concentrically of the aXis of the disk l and the marginal edge ofthe disk for a'portion of the circumference thereof is formed with a rearwardly extending curved flange 10 designed to surround the adjacent portion of the ear piece of the receiver.

Fastened to the outer surface of the flange 10 is a metal strip 11 carrying gripping fingers l2 spaced apart equal distances and projecting toward the center of the disk 1 and rearwardly thereof so as to grip the body of the receiver at the rear of the ear piece, as clearly illustrated in Fig. 5, whereby the shield or guard will be effectively secured to the receiver. When the shield is applied to the receiver as shown in Fig. 5, the opening 2 registers with the opening in the ear piece of the receiver and is disposed concentrically of the aXis thereof so as to facilitate the emission of the sound waves from the receiver.

From the foregoing description taken in connection with the accompanying drawing, the construction, and manner of employing my improved shield or guard will be readily apparent. It will be seen that I have provided a shield or guard which may be readily and quickly applied to and removed from the respective telephone instruments and which will promote sanitation and eliminate contagion.

While I have herein shown and described one preferred form of my invention by way of illustration, I wish it to be understood that I do not limit or confine myself to the precise details of construction herein described and delineated, as modification and variation may be made within the scope of the claim without departingfrom the spirit of the invention.

I claim:

A shield of the class described comprising a circular disk having an opening formed therein, a curved flange formed on said disk at the marginal edge thereof, a curved strip secured to the outer surface of said flange, and fingers formed on one edge of said strip and extending over the outer end of said flange toward the central portion of the disk.

In testimony whereof I affix my signature in presence of two witnesses.

RUSSELL HOWARD MAXWELL.

Witnesses:

HELEN G. DALEY, W. S. MCDOWELL.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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