US454399A - cutmore - Google Patents

Description

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H. A. CUTMORE. @SPEAKING TUBE.

Patented June 16,1891.

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SPEAKING TUBE.

No. 454,399. Patented Jun'e 416,1891.

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H. A. GUTMORE.

SPEAKING TUBE.

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UNITED STATES i. kaf ti PATENT OFFICE.

SPEAKING-TUBE.

SPECIFICATION forming part of Letters Patent No. 454,399, dated J' une 16, 1891.

Application tiled March 17, 1890. Serial No. 344,210. (No model.) Patented in Victoria September 6, 1888, No. 6,155; in New South Wales November 21, 1888, No. 1,084, and in England Merch 18, 1889, No. 4,737.

vT0 all whom it may ccm/cern:

Be itknown that I, HAHNEMANN ADoLPHUs OUTMORE, of South' Yarra, Melbourne, in the Colony of Victoria, have invented certain new and useful Improvements in Speaking-Tubes, (for which I have applied for Letters Patent of Great Brit-ain, No. 4,787, dated March 18, 1889, in New South \Vales,No. 1,084., dated November 21, 1888, and in Victoria, No. 6,155, dated September o', 1888,) of which the following is a specification.

This invention relates to improvements in or connected with speaking-tubes, and will be best understood by reference tothe accompanying drawings, in which- Figures 1 and 2 are respectively a front and a side elevation of one form of apparatus constructed according to this invention. Fig.3 is a section on the line a b of Fig. 1, showing the apparatus in its shutoff position, and Fig. 4 is asimilar section of a portion of Fig. 3 in its open position. Fig. 5 is a section on the line c (Z of a portion of Figs. 2 and Swhen inits closed position, and Fig. 6 is a side elevation of an alternative arrangementof the apparatus.

Like letters indicate like parts throughout the drawings.

Referring more particularly to Figs. l to 5, A is the body of the iitting, which may be secured to the desired part of a wall or other support by the flange A or in any other convenient manner. The bodyA is formed with a barrel A2 for receiving the plug B, which may be turned therein, and is constructed after the manner of the plug of an ordinary cock, but is parallel instead of taper, so as to be readily inserted from eithorside of the apparatus, as circumstances may render convenient. The body A is also formed with a boss or brauch, preferably screwed inside, and at its forward end is provided with a mouth-piece A4. The parts A4, when hereinafter referred to, will be termed transmitters. The branch A3 receives the nipple C, which passes through the metal cup C2, between which and the flange O on the nipple is held the lower part of the eompressible bulb C3, which is composed of india-rubber socket E, formed on the ear-piece E.

or other suitable material, and may be provided with a whistle or call Ci.

The plug B at one end B', Fig. 5, is closed, and is there provided with a screw B2 and nut B3 t'or retaining it in proper position in the barrel A2. The other or oper` end of the plug B is provided with a bent and hollow branch B, in which is secured one end of a piece of flexible tubing D, the other end of which is secured in a preferably curved The parts hereinafter referred to by the letter E are termed receivers.

B are the ports of the plug B, through which is established communication between the two ends of the speaking-tube.

B6 and B7 are stops formed on the plug, and A5 is a pin or projection on the barrel A? for preventing the plugB being moved beyond its open and closed positions. The combined weight of the tube D and receiver E when left unsupported is suiiicient to automat-ically turn oit 'the plug B and so close the speaking-tube.

As represented in the drawings, the plug B is also provided with a stop lr, which, it the body A be inverted with the bulb C3 underneath, allows of the receiver E being used at the left-hand side of the transmitter A4, the stops B7 and BS then serving to restrict the movement of the plugB toits open and closed positions. By reversing the plug B this re sult may be attained without inverting the body A.

Vhen in its normal position, the reeeiverE hangs downward, as shown in Figs. 1 and E2, and the plug B is in its shut-oit position, as shown in Figs. 3 and 5.

When a person desires to speak through the tube, he with his thumb or otherwise closes the opening through the whistle Oiand compresses the bulb Ci", and thus drives air through and sounds the whistle at the other end of the tube. The person answering this call can, it desired, cover over the Opening through the whistle C* and compress the bulb O3 at his end of the tube, and thus sound the callers whistle and signify his attention. Both then raise the receivers E to their ears,

and thus turn the plugs B into their' open pO- sitiou, leaving the speaking-tube unobstructed. As soon as they have finished conversing they lower the receivers E', and thus out o communica-tion between the two en'ds of the tube. The person using this apparatus speaks into the transmitter and places the receiver to his ear.

As shown in Fig. 6, the transmitter may be mounted on'the flexible tubing D and the front end of the body closed by a plug F or in other convenient manner. Under this construction the transmitter A4 is formed withasocket G, into which is secured the iiexible tubing D and from which branches the tube G', on whose end is provided the receiver E'. Vhen a person applies his mouth to the transmitter of this last-described arrangement, the tube G will extend past his cheek and the receiver E will be against his ear.

The operation of the apparatus shown in Fig. 6 is the same as that of the before-described example.

When a number of the before-described fittings are used in the same room,they maybe provided with indicators to show which of the whistles have been sounded. These indicators may be in the form ot flaps, each normally closing the opening through thewhistle to which it is applied, and which will be blown away from the said opening and remain in a conspicuous position when the whistle is sounded, or they may be of other construction.

Instead of the bulb C3, the ordinary means may be provided for enabling the whistle at the distant end of the tube to be sounded by blowing with the mouth, and under this construction an ordinary whistle fixed in the body A at the back of the plug B would suffice.

If desired, the plug B may be arranged for turning directly by hand instead of through the tube D g but besides these there are various other ways in which the apparatus may be modified without departure from the spirit of this invention.

I claiml. In a speakiug-tube, abody portion carrying on its free end a transmitter, a barrel portion interposed between the body and transmitter, and the stop-cock carrying a receiver and mounted in the barrel and having opposite openings, whereby in its normal position it closes the tube and prevents the passage of the air through the transmitter and receiver, substantially as described.

2. A speaking-tube consisting 'of a body having attached thereto a signal device and provided with a stop-cock carrying an earpiece and arranged to normally close the passage of the body, substantially as described.

3. A lspeaking-tube consisting of a body portion having attached thereto an elastic compressible bulb carryinga signal device, a transmitter connected to the free end of the body, and a stop-cock interposed between the body and the transmitter and carrying an earpiece and arranged to normally close the tube, substantially as described.

In testimony whereof I have hereto set my hand in the presence Ot` Ytwo subscribing witnesses.

lIAlINEM-NN ADOLPHUS CUTMORE.

Witnesses:

GEO. M. YOUNG, GEO. SHAW, J r., Both of 42 William streef, lIeIbouz-ne, Vie

toria.

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