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Publication numberUS2572547 A
Publication typeGrant
Publication dateOct 23, 1951
Filing dateSep 1, 1948
Priority dateSep 1, 1948
Publication numberUS 2572547 A, US 2572547A, US-A-2572547, US2572547 A, US2572547A
InventorsWebb Horace L
Original AssigneeWebb Horace L
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Dictation mask with cartridge type silencer
US 2572547 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

Oct. 23, 1951 H, WEBB DICTATION MASK WITH CARTRIDGE TYPE SILENCER Filed Sept. 1, 1948 Patented Oct. 23, 1951 DICTATION MASK WITH CARTRIDGE TYPE SILENCER Horace L. Webb, Vienna, Va.

Application September 1, 1948, Serial No. 47,199

6 Claims.

This invention relates to a device or mask for use in court reporting, assemblies or other gatherings to receive directly the uttered or other sound in such manner as to be non-disturbing to participants, spectators or other persons, being generally like, following the principles of, and an improvement over the device disclosed for instance in my co-pendrng application, Ser. No. 667,827, filed May 7, 1946, now Patent No. 2,526,177, granted October 10, 1950.

A prime object is to provide a construction better enabling the employment of ambient sound and moisture-absorbing means in the form of a readily renewable cartridge.

A second object is to provide such a cartridge in shape-retaining form.

A third object is to provide a novel casing which especially co-acts with the sound and moisture-absorbing cartridge so that maximum space within the body will be filled thereby and centering of the cartridge aided.

The fourth object is to provide a novel construction which avoids interference of the sound and moisture-absorbing material with the switch or operation thereof.

Various additional objects and advantages will become apparent as the description proceeds.

In the accompanying drawings illustrating one operative embodiment:

Fig. 1 is a perspective view. of the improved dictating mask as held in operative position by a hand suggested in dotted lines;

Fig. 2 is a side elevation of the mask in open condition with a sound and moisture absorbing cartridge about to be inserted; and

Fig. 3 is a central vertical sectional view taken longitudinally through the mask.

Referring specifically to the drawings wherein like reference characters designate like or similar parts, 9 designates a casing or body of any suitable length, shape and material, such as modern plastic, or metal like aluminum or magnesium, in view of its light weight or otherwise and in any approved size and for example consisting of sections l and II. The former is hollow and generally cylindrical for the passage of sound therethrough, and the latter is a normally closed end therefor. Closure section II is displaceable, being either detachable or removable, or, as shown, hinged at [2 to coacting lugs 13 and I4 fastened respectively to section I0 and an annular marginal rim l of closure section II. One or more spring-metal or plastic clips 16 on section l0 have latching engagement with said rim I5 to normally prevent opening of the casing. At the open dictation end of the section l0, it is flared somewhat at Illa and wedged therein is a flexible rubber diaphragm-like face piece or sound receiver [1 similar or equivalent to that disclosed at 14 etc. in my aforesaid application Ser. No. 667,827, Rivets H) or a bonding cement or both may be used to secure receiver I! within said flare I0 and aid in sealing the junction airtight. Sound receiver l1 contacts and fits the face of a dictator and surrounds and encloses the mouth or nose and carries a microphone 20 at any suitable location. As in said pending application the facepiece or sound receiver ll carries a relatively thin flange l'l (like 16 in said pending application) extending around and inwardly from the periphery contacting and fitting the face of a diotator surrounding and enclosing the mouth and nose and the cheek-bones to absorb or tend to absorb sounds vibrating through such bones.

Conductors l9 operatively connect said microphone to a conventional dictating machine, and one of which conductors is preferably grounded to such machine. A conventional switch 22, through the conductors 23, one of which may be grounded, controls the operation of the said dictating machine, and such conductors 2| and 23 are suitably covered or protected and pass through a guiding and wear-reducing grommet 24 in the Wall of section [0. Said receiver I1 above the microphone 20 has a suitable number of breather openings 24 therethrough.

Section I0 is filled with an ambient sound and moisture absorbing mass, for instance, of cellulosic material, felt, or any suitable equivalent M, preferably in the form of a cartridge which is shape-retaining and thus capable of more expeditious handling. This cartridge M is shown to best advantage in Fig. 2, wherein closure II is open with respect to the section I0 and the cartridge M is about to be inserted into the section I0 through the available end thereof. In order to render mass M shape-retaining, it is preferably dipped into a starch solution, a plastic solution or any equivalent, and then dried. This readily removable and replaceable cartridge combehind the sound receiver IT.

M, which interfits with the receiver 11.

M in the aid of sanitation.

The aforesaid rim l5 abuts the rear end of the cartridge M and will assist in moving the latter into position if not accurately applied. Thisv feature is augmented by the rabbetting at 21 of a marginal edge of the rim to enable it to slightly telescope into the section I 0.

Extending integrally from rim I5 is a hollow knob-like projection 28 which carries a bracket 29 therein directly mounting switch 22. Such switch is preferably of the type having a depressible actuator 30 including a plastic or other fingerpiece 3|, which is guided in and normally projects above an opening 32 in the upper wall of the knob 28. This fingerpiece is wedge-shaped am n in cross-section and normally-closes opening 3-2, but as it is narrowest at its top, the depression will partly uncover opening 32 to function as-abreather opening.

It will be noted that Tim l5 forms an abut-;

by the knob 23, as suggested by the dotted lines in. Fig. 1., and. talked into while. the. sound. re.- ceiv'er i1; is held against the face, surrounding the; chin, mouth and nose, sound being. trans.- mined, throu h the. microphone to the. talkin machine, ambient sound; however being. muliied and absorbed within the casing and prevented from passing to the exterior by thecartridge M. The finger-piece 31 is readily manipulated by one finger of the hand which grasps the knob 28, and when depressed partly uncovers-opening 32 so. that the latter functions as-a breather opening. 7

Whenever desired, the. closure l.lmay be moved. on its hinge i2 to. and. from. open..p0si.- tion, disengaging and engaging. the latch, it, .to facilitate replacement of-the cartridge M, which is advisable from. time to.- time because of moisture absorption.

Various changes may be resorted to provided they fall within the spirit andscope of; the. invention.

I claim:

1. A dictating device comprising a. twoeended body having one end open to receive sound, a displaceableclosure at the other.endoi-thebody, an electric microphone and-a control. switch in said; body, electric current conducting. means connected to, said, microphone through. said switch, a sound-absorb'nig .filler in the. bodyapplicable and removable when the closure-isdisplaced, a. flexible diaphragm-like. receiver outwardly enlarged with. respect to. the. other end of said body, closing. the latter end; saidomicrophonejbeing carried by said receiver, afiexible face-fitting. flange on the interior or" said: receiver, said control switch being mounted by said closure and said. closure having'a portion interposed between said: filler and said switcha prevent interference .of the fillerwith-operajtion of the switch.

2. A dictating device comprising a two-ended body having one end open to receive sound; a displaceable closure at the other end-of-thebody, a control switch carried by said closure andop'er able from the exterior thereonan electricmirophone in said body, electric conducting means connected to said microphone through said switch, a sound-absorbent cartridge in the body of shape-retaining characteristic, said cartridge being applicable and removable whenthe closure is displaced, and said closure means abutting said cartridge and maintaining it'outofinterfering relation with said switch.

3. A dictating device comprising atwo-ended body having one end-open to receive sound, a displaceable closure at the other end of th ebo dy, an electric microphone and a control switch in said body, electric current conducting naeans connected to said microphone through; said switch, a sound absorbing cartridge in the body,

a sound receiver in the open end ofsaid body,

said receiver and-closure having openings to cartridge having a depression interfitte d =with 4 said sound. receiver, said; switch being carried by said closure and said closure having a portion abutting said cartridge and maintaining said cartridge out of interfering engagement with 4 A dictating device comprising a two-ended body'having one end open to receive sound, a flexible soundreceiver closing the open end of saidbodyand outwardly enlarged with respect thereto, a closure at the other end of the body, an electric microphone carried by said sound receiver, a control switcnelectri curlifinfz conducting. means connected; to Sai Z iiQK- DhQIi? through said. switch, a sound-absorbing. filler in the body. applicableand removable. throu h th said open end whenthe closure is displaced,

said closure having. a. hand-grasping portion carrying said switch;v and forming an abutment for said filler to; space the latterxout of. inh

fering. relation with said switch.

5. A dictating. device. comprising a two: ended body having one end open. to receive. sound, a flexible sound receiver closing the open end;.of said body and. outwardly enlarged. with respect thereto, a closure-.at the. other end of the body, anelectric microphone carried. by saidreceiver and a control switch in saidbody, electric current conducting meansconnected to said microphone through said switch, a sound-absorbing. filler. in the body interfittedwith said sound receiver, said closure being in displaceable relation with respect to the body and having a rim extending partly across the adjacent end. of the. :body, and a hollow knob-like outward extension .on .the closure, said switch being mounted .on. said .ex'- tension and maintained outo-f-interferingrelation with the filler-by said 6. A dictating device comprising a double.- ended dictating body, an electric microphone within said body, a sound-absorbing fill-ingin the body, a closuremeans-hinged to one endof the body, a rim on saidclosure "means extending partly across one-endof the-device, an outwardly extending hollow '7 knob-like extension on the closure having an opening to enable breathing therethrough, a control switch within said: extension, said rim preventing interference at said filler with said switch, said: switch having; a finger-piece sl-idable in saidopening, and said body having an opening, conductor means passing through said latter opening to said-'micro phone and switch. HORACE-L. WEBBi} REFERENCES CITED The ol owin reierence re -0f. 1e .0r in the file of. this pa n IT D STATEfi PATENT ouman lnh njl; oat. 18, 1949

Patent Citations
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2745911 *Dec 5, 1952May 15, 1956Webb Horace LAmbient sound excluding dictation mask
US2769039 *Jun 3, 1953Oct 30, 1956Webb Horace LDictation mask structure
US2769040 *Mar 15, 1951Oct 30, 1956Dictaphone CorpMicrophone housing
US2830135 *Dec 21, 1953Apr 8, 1958Webb Horace LDictation type mask with valve controlled inhalation and exhalation
US2848565 *Jun 4, 1954Aug 19, 1958Webb Horace LSound proof mask for hand microphone
US2857013 *Aug 10, 1955Oct 21, 1958Leo OrsoDictation device
US2882355 *Dec 21, 1953Apr 14, 1959Webb Horace LDictation type mask with combined switch and air control
US3925616 *Apr 30, 1974Dec 9, 1975Bell Telephone Labor IncApparatus for determining the glottal waveform
US4932495 *Nov 25, 1988Jun 12, 1990Chapman Dewey RVocal sound muffling device
US5413094 *May 10, 1993May 9, 1995Mcbrearty; EdwardApparatus for reducing the noise of coughs and sneezes
US6085864 *Sep 17, 1999Jul 11, 2000Copeland; DerrickCough muffler
US7997275Nov 13, 2008Aug 16, 2011Michael QuinnCough catcher with protection against germ transmission by hand contact
US20090145445 *Nov 13, 2008Jun 11, 2009Michael QuinnCough catcher with protection against germ transmission by hand contact
Classifications
U.S. Classification181/242
International ClassificationH04R1/08
Cooperative ClassificationH04R1/083
European ClassificationH04R1/08D