US485979A - Speaking-tube - Google Patents

Description

(No Model.)

W. PERPENTE.

SPEAKING TUBE.

No. 485,979. Patented Nov. 8,1892.

ZMHMM W UNITED STATES PATENT OFFICE.

.NVILLIAM PERPENTE, OF NEVt HAVEN, CONNECTICUT.

SPEAKING-TUBE.

.ESEECIFICATION forming part of Letters Patent No. 485,979, dated November 8, 1892. Application filed August 17,1891. Serial No. 402,897. (No model.)

T0 at whom it may concern:

Be it known that 1, WILLIAM PERPENTE, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Speaking- Tubes; and I do hereby declare the following to be afull, clear, and exact description of theinvention, which will enable others skilled in the art to which it appertains to make and use the same. X

My invention relates to various new and useful improvements in speaking tubes which are especially adapted for use in carriages for establishing a means of communication between the occupants thereof and the driver; but it should be understood that the invention is capable of effective use in other connections, such as in dwelling-houses, offices, &c. 7

The principal object which I seek to accomplish'by the use of my invention is to do away with the usual tin whistle now used to attract the attention of the driver, since I have found that the use of such tin whistles is objectionable for the reason that the proper transmission of the sound is considerably effected thereby, that such whistles are difficult to introduce and retain in the receiver of the speaking-tube, and that when such whistles become rusty or damaged they become inoperative, or at least operate very imperfectly. To accomplish this object, I make use of a wooden whistle, which forms practically a continuation of the speaking-tube, and which is placed crosswise in the receiver in order that the sound therefrom maybe directed out of the receiver, and, further, in order that the opening in the side of said whistle may be utilized as a passage through which sound may be transmitted.

Other objects of my invention are to provide and produce a speaking-tube which will be attractive in appearance, cheap to construct, and effective and durable in use.

For a better comprehension of my inventionattention is directed to the accompanying drawings, forming a part of this specification, and in which- Figure 1 is a side view of my improved speaking-tube; Fig. 2, a top view of the same,

which is the construction applied to use in carriages; but it is to be understood that any length of tubing maybe used,and that a nonflexible tubing may be used, and that a re ceiver or a receiver and transmitter may be placed at each end of the tube.

A is the transmitter, B the tubing, and C the receiver, which are the three principal elements of the invention. The transmitter A, which is preferably made of wood turned out in an ordinary lathe, is of the general bell shape shown. It may be provided with suitable ornamental beads, as shown, to improve its appearance. The transmitteris provided with a flaring lip a and is made hollow, so as to convey the sound to the tube. The neck I) of this transmitter A is made screw-threaded on its interior, and the said interior is inclined, so that when the end of the tube B is screwed therein it will be gradually compressed, until it is firmly in position. The tube B is preferably of rubber, either plain or covered with a cloth or silk web, so as to improve its appearance, and it is to be screwed within said transmitter A, as just explained. When the device is to be used in dwelling-houses or in other similar connections, a tin, iron, or heavy paper tube may be substituted in lieu of said rubber tube, since rubber, owing to its cost and its liability to decay, would be impracticable for use in such connection. The receiver C is composed of two separate parts, the whistle c and the hearing-piece or bell d, which are both preferably made of wood, which may be easily and economically turned out by an ordinary turning-lathe.

The whistle 0 consists of a body part eand a cylindrical head f. The body 6 is preferably provided with suitable ornamental beads, as shown, and it constitutesa very convenient handle, by which the receiver 0 may be held up to the ear of the listener. The

whistle c is made hollow up to a point near the extreme end of the cylindrical portion or head f; or, if desired, it may be hollowed out its entire length and the head f may be plugged up for a short distance by means of a wooden plug. The hollowed-out portion within the body part c is made larger than that within the cylindrical head, and it is also made inclined and screw-threaded in the same way and for the same purpose as the hollowed-out portion of the transmitter A. The cylindrical head f is provided with the usual inclined cut or opening g therein, seen in all whistles of this variety, and a wooden plug h, having a passage along its top, is inserted within the whistle directly back of the cut or opening g, so as to direct the moving currents of air against the sharp inclined edge of said out, whereby a sharp penetrating whistling sound will be produced.

The hearing-piece or bell d is made of the general form shown, with a large deflecting aperture 71 therein, which communicates at its inner and smaller end with a cylindrical lat eral passage extending directly through the same. The cylindrical portion or head f of the whistle is inserted through this passage, so that the cut or opening 9 therein will be directly coincident with the inner end of the ployed, and one which avoids the objections adherent on old devices.

Having now described my invention, what.

1 claim as new therein, and desire to secure by Letters Patent, is as follows:

In a speaking-tube, the combination of a tube and a receiver 6, consisting of a whistle 6, having a cut or opening g therein, and a hearing-piece or bell provided with a deflecting orifice i, the said opening g being coincident with the inner end of said orifice, sub- 55 stantially as set forth.

\VILLIAM PERPENTE. In presence of DANIEL COLWELL, JOHN J. PHELAN.

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