US434672A - mersick - Google Patents

Description

(No Model.)

B. P. MERSIGK.

SPEAKING TUBE.

No. 434,672. Patented Aug. 19', 1890.

UNITED STATES PATENT OFFICE.

EDWVIN F. MERSICK, OF NEWV HAVEN, CONNECTICUT, ASSIGNOR TO ENGLISH 85 MERSICK.

SPEAKING-TUBE.

SPECIFICATION forming part of Letters Patent No. 434,672, dated. August 19, 1890. Application filed May 19, 1890. Serial No. 352,387. (No model.)

To all whom it may concern: as a screw-thread to draw the tube into the Be it known that I, EDWIN F. MERSICK, of socket. That the fabric covering may be in- New Haven, in the county of New Haven and closed and protected at that end, the socket State of Connecticut, have invented anew Imis constructed at that end with a recess so provementinSpeaking-Tubes; andldohereby much larger than the wire part of the tube as declare the following, when taken in connecto extend over the covering, as seen in Fig.

' tion with accompanying drawings and the let- 2. This forms a recess a in the end of the ters of reference marked thereon, to be a full, socket, which incloses the covering of the tube, clear, and exact description of the same, and so as to protect and give a finish to the covto which said drawings constitute part of this ering at its junction with the mouth-piece, it specification, and represent, inbeing understood that the covering is removed Figure 1, a side view of the tube with the on that portion of thetube which enters the mouth-piece attached; Fig. 2, a longitudinal screw-threaded portion of the mouth-piece. section through one of the mouth-pieces and This union between the mouth-piece and x 5 a portion of the tube; Fig. 3, a longitudinal tube makes a firm connection, which is not section of the mouth-piece detached, and Fig. liable to be accidentally detached, but yet j 4 the divided spring'ring detached. permits the mouth-piece to be readily removed This invention relates to an improvement should occasion require. in speaking-tubes such as used upon carriages The whistle is placed inside the mouth- 20 as a communication from the occupants to the piece. To permanently unite the whistle with coachman, and in which the tube is flexible, the mouth-piece, and so that it may be staapplicable also to other purposes, the object tionarytherein, the mouth-piece is constructed of the invention being, first, to construct the with an annular shoulder b on its inside dismouth-piece with the whistle stationary theretant from the outer end of the mouth-piece 25 in,and also to unite the flexible tube withthe so far as to be out of the way of the lips.

mouth-piece in a simple and durable manner; Against this shoulder the Whistle D is set,

and the invention consists in the constructhe whistle being a common mouth-piece tion as hereinafter described, and particularly whistle, and around theinterior of the mouthrecited in the claims. piece outside the whistle an annular groove A represents the mouth-piece which is ind is formed, into which a divided wire ring 6 8o tended for use at the coachmans end of the is placed. This wire ring is represented in tube,and-B the mouth-piecewhich is intended Fig. 5 detached. It is made from wire of a for the inside end of the tube, C being the diameter somewhat greater than the diamefiexible tube connecting the two mouth-pieces. ter in the groove d, and a portion of the ring 3 5 The flexible tube is constructed from wire is cut away, as at f. The ring is elastic, spirally wound and covered with fabric. In so that it may be pressed into the mouth- Fig. 2 this tube is shown in longitudinal secpiece, contracting until it reaches the groove' tion. The mouth-pieces are made from wood, d, when it will expand into the groove and hard rubber, or other suitable material, and there lie against the whistle, so as to secure 40 are constructed with a socket C at the tube the whistle between the shoulder d and the end. This socket is of an internal diameter said divided ring, thus firmly holding the corresponding to the external diameter of the mouth-piece in place. spiral-wire portion of the tube, and is inter- The opening through the whistle is suffinally grooved with a spiral groove correspondcient for speaking purposes without disturb- 45 ing to the spiral wire of the tube, and so as to ing the position of the whistle, and the call 5 form practically an internal screw-thread in is made from the other mouth-piece by blow: the socket, as seen in Fig. 3, which come ing, as usualin speaking-tubes Where whistles sponds to the spiral surface of the tube, and are employed as the signal. so that the tube may be screwed into the Both mouth-pieces maybe provided witha 5o socket, the convolutions of the wire operating whistle, if desired; but incase of a carriage- I00 tube the one at the coachmans end is all that 2. In a speaking-tube, the mouth-piece conis necessary. structed with an internal shoulder Z) and with I 5 1 claim an annular groove cl outside said shoulder, a 1. In a speaking-tube in which the tube is whistle D, set against said shoulder, and the 5 made from a spiral-wire body, the combinadivided spring-ring e in said groove d, subtion therewith of a mouth-piece constructed stantially as described, and whereby the said with a socket at the tube end, the socket inwhistle is secured in the mouth-piece between 20 ternally screw-threaded corresponding to the the said shoulder and the said ring. convolutions of the wire body, the end of the 10 wire body screwed into the said socket, the EDWIN F. MERSIOK.

convolutions of the wire forming the screw- Witnesses: thread for the union of the mouth-piece and FRED C. EARLE, tube, substantially as described. J. H. SHUMWAY.

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