US352044A - Electro-mechanical whistle - Google Patents

Description

(No Model.)

H. B. COX.

ELEGTRO MECHANICAL WHISTLE.

No. 352,044. Patented N0 ,1886'.

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v is a full, clear, and exact description of the in- The induction-passage b of thecasing is of'the 5o ply-pipe E to the whistle.

UNITED vi STATESP TENT OFF 101e,; 1 1

HARRY efoox, or

CINCINNATI, OHIO.

ELECTRO-MECHANICAL WHISTLE.

SPECIFICATION forming part of Letters Patent No. 352,044, dated November 2, 1886.

Application filed July 13, 1886. Serial No. 207.943. (No model.)

To all whom it may concern.-

Be it known that I, HARRY B. COX, of Oincinnati, in-the county of Hamilton and State of .Ohio, have invented certain new and useful Improvements in Electro -Mechanical Whistles; andI do hereby declarethat the following vention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of refer-- ence marked thereon, which form part of this specification.

My invention relates to whistles such as are used on locomotives, stationary and marine engines, fog-horns, and air-whistles; and it v has for its object to furnish a novel mechanism for operating such whistles.

With this object in view my invention consists in the improved construction, arrangement, and combinationof parts hereinafter fully described, and afterward specifically pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in perspective of the whistle and operative mechanism complete. Fig. 2 is a view of the upper portion of the whistle, partly in section and partly in side elevation; and Fig. 3 is a view in side elevation of the valve-plug detached.

Like letters of reference mark the same parts in all the figures.

Referring to the drawings by letters, A is an ordinary steam or compressed-air whistle, provided with a valve to admit the operative fluid. B is the casing of said valve, provided with an induction port or passage, b. O is the valve-plug, fitted accurately in the casing B, and provided with small ends a, which project through the packing-glands b of the casing B. The valve-plug is provided with an elongated slot of substantially rectangular section.

same section. The eduction-passage 1), however, is of the ordinary shape, being circular in section, and tapering to concentrate the fluid before reaching the whistle.

D is the supporting-upright, serving also as the pipe to conduct the steam or air from supvalve-plug C, while their lower ends are pivotally secured at f f to red G, which in their turn have a cross-bar, H, loosely pivoted in their outer ends, as at g 9. On the center of the cross-bar G is secured one end of an armature, I, which is pivoted in brackets or lugs I, projecting from the support D, and at its opposite end engages an electromagnet, J, the armature being kept normally in its disengaged position by a spring, 2', and being regulated as to extent of throw by a set-screw, t.

K K are-wires from the battery.

The mechanism is operated as follows, viz: The circuit being open, the armature by virtue of the spring t will remain in its outer position at the lower end, out of contact with the magnet J, in which position the valve will be closed. To open the valve and sound the whistle,it is only necessary to close the circuit in any well-known manner, or by any suitable circuit-closenwhen the electro-magnet,becommature to it, and as a consequence its upper end will be moved outward, which motion, through the medium of rods or links G and levers F, will turn the valve-plug so that the induction-passage of the valveand the slot of the valve-plug will coincide, thus allowing a free passage for the fluid to the whistle. But a very small movement of the plug is necessary, due to the shape of the slot in it and the induction-passage. Thesebeing elongated,may be made very narrow without unnecessarily curtailing their area, and a movement of about one-eighth of a revolution will fully open or close the valve, whereas nearly a half-revolution would be necessary with these openings of a circular area.

The special advantages claimed for this invention, of the combination of valve-whistle and electro-magnet, and the uses to which it is applicable, are, first, if used in connection with an electric-bell cord or, signaling device on railroad trains, it has the advantage over an ordinary electric gong in that the motion and jar of the train does not make it jingle or tend to throw it out of order, as is invariably the case with an electro-gong; second, if used as an alarm-signal on marine engines, it can be operated by a push-button from any part I F are levers secured to the ends a c of ing active,will draw the lower end of the arof the vessel at which said button is located;

third, it gives, when used as above cited, a much clearerandlouder signal; fourth, when, as an alarm-signal on stationary engines,pushbuttons may be placed at convenient places, and in case of an accident to the machinery an instant and loud signal can begiven the engineer; fifth, its especial advantage is that when steam or compressed air can be used it gives a louder and clearer signal than can be made by any known contrivance operated by electro or electromechanical means.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In combination, a whistle, its valve havinga suitable casing with elongated ind uctionpassage and circular eduction port, and a valve-plug with an opening corresponding in section with the induction-passage, as set forth.

HARRY B. COX.

Witnesses:

O. E. DUFFY, F. P. HARDING.

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