US766430A - Telegraphic instrument. - Google Patents

Description

PATENTED AUG. 2, 1904.

A. R. DIGKEY.

TELEGRAPHIG INSTRUMENT.

APPLICATION FILED MAY 13, 1802.

N0 MODEL,

Wilgzsszs Patented August 2, 1904.

UNITED STATES PATENT ()FFICE- ARTHUR It. DICKEY, OF MISSOURI VALLEY, IOXVA, ASSIGNOR OF ONE- HALF TO THEODORE F. VON DORN, OF OMAHA, NEBRASKA.

TELEGRAPHIO INSTRUMENT.

SPECIFICATION forming part of Letters Patent No. 766,430, dated August 2, 1904.

Application filed May 13,1902. Serial No. 107,071. (No model.)

To (ML wit/mt it may concern.-

Be it known that I, ARTHUR R. DICKEY, a citizen of the United States, and a resident of Missouri Valley, in the county of Harrison and State of Iowa, have invented certain new and useful Improvements in Telegraphic Instruments, of which the following is a specifi cation.

This invention relates to telegraphic instruments.

Telegraphers are annoyed by the constant operation of the sounder-s of circuits which are not being used inthe local office, and means has heretofore been provided for cutting out 5 these sounders without breaking the circuits; but this means has been, as a rule, attached to each sounder.

It is my object, however, to provide for cutting out the sounders in any number of telegraphic circuits by a single instrument.

A further object is to provide an improved cut-out for electrical circuits.

\Vith these and other objects in view myinvention consists of certain parts and combinations of parts, as will be hereinafter described, and pointed out in the appended claims.

Referring to the drawings, forming a part of this specification, Figure 1 is a perspective 3 view of my invention. Fig. 2 is a vertical longitudinal section on the line 2 2 of Fig. 1. Fig. 3 is a perspective view of the contacts with the mounting taken away. Fig. at is a schematic view showing the wiring between the instrument and thesounders.

Referring more particularly to Fig. i of the drawings, wherein I have shown a schematic view, 1 1 1 designate the sounders,whieh receive the pulsations from the main wires 2 2,

4 3 3, and 4 at, and to these sounder-s, preferably to the binding-posts thereof, are connected wires 5 5, 6 6, and 7 7, each pair of which is connected to a cut-out upon the instrument 8.

This instrument 8 consists of a mounting com- 4 5 posed of a base 9, a housing 10, supported near one end of the base 9, and a plurality of cutouts carried by the housing. In the rear of the housing 10 is a plate 11, which carries a number of binding-posts, two binding-posts for each cut-out being provided. 5

Each cut-out consists of two contacts normally held in circuit-breaking position. A yielding plate 12, secured upon the upper inner wall of the housing 10, forms one of the contacts and is connected with a binding-post 13, and. the other contact, 14, is pivoted on the outside of the housing to a conductorplate 15, which is bent to form a horizontal portion 16, resting upon the plate 11, and through which the binding-post 17 passes, a vertical portion 18, and a perforated ear-carrying portion 19, which rests upon the top of the housing 10. The contact 14 consists of an arm 20, which is pivoted at one end to the ear portion 19 of the conductor-plate 15 and 5 at its other end carries a linger-piece 21 and a projection 22, depending from this arm 20 through an opening in the housing and adapted to engage with the yielding contact. A spiral spring 23, disposed beneath the arm 20 7 and surrounding a headed stem 24, which is passed through an opening in said arm and is secured to the housing, holds the pivoted contact in a raised position. While these contacts are normally held in breaking position, means independent of them is provided for holding them in contact position. A sliding detent 25 is secured in the front wall of the housing and is held normally in the path of the projection 22- of the pivoted contact let by a spring 26. The end of the sliding detent is beveled, as is the end depending projection 22, and when the pivoted contact is depressed the beveled end of the projection 22 forces the detent out of its path until said detent 5 reaches a recess 27, when the spring forces the said detent therein.

Vhen it is desired to break the circuit through the cut-out, the detent is withdrawn from the recess 27, and the spring 23 elevates 9 the arm 20, and consequently the projection 22. To quickly withdraw the detent from engagement with the depending projection, a headed stem 28 is provided, which extends through the front wall of the housing, and this stem is engaged by a bifurcated end 29 of a bell-crank lever 30, which is fulcrumedat 31 to the base 9. The other end of the bell-crank lever is provided with a finger piece 32. To cut out any one or more of the sounders, the pivoted contact 14 is depressed, and the depending projection 22 contacts with the yielding plate 12. The current instead of passing through the coils of the sounders takes the shortest course and passes through the cut-out. To throw a sounder in operation, the end of the bell-crank lever 30 which is provided with the finger-piece 32 is depressed, whereby the sliding detent 25 is withdrawn from engagement with the depending projection 22, and the spring 23 separates the contacts, breaking the circuit through the cutout.

I desire it to be understood that various changes in form, proportion, and minor details may be made within the scope of the appended claims without departing from the spirit of my invention.

What I claim is 1. The. combination with a contact-plate; and a pivoted contact comprising an arm pivoted at one end, a finger-piece at the other end of the arm, and a projection depending from the arm, having a recess, and adapted for contact with the plate; of a detent adapted to enter the recess of the depending projection; and means for operating the detent.

2. The combination with the housing, and the base, ofa contact-plate mounted Within the housing, a contact operative from the exterior of the housing, asliding detentmounted in a wall of the housing and provided with a headed stem which extends through the wall of the housing, and a bell-crank lever pivoted to the base, provided with a fingerhousing supported near one end of the base,

of a plurality of contacts mounted within the housing, a plurality of contacts operative exteriorly of the housing and normally separated from the contacts within the housing,

independent means for holding each pair of contacts together, and independent manuallyoperated means for each contact-holding means, mounted upon the base independently of the housing.

L. The combination with a base, and a housing supported near one end of the base; of a yielding contact-plate secured upon the upperinnerzwall of the housing; a pivoted contact consisting of an arm pivoted at one end to the housing, and carrying at its other end a finger-piece, and a projection'provided'with a recess, depending into the housing and contacting with a yielding contact-plate; a spring disposed beneath the arm of the pivoted contact to normally separate the contacts; a spring-pressed sliding detent for holding the contacts together, provided with a headed stem which extends through the front wall of the housing; and a bell-crank lever pivoted to the base and having one end bifurcated to engage with the headed stem of the sliding detent, and its other end provided with a finger-piece.

The foregoing specification signed this 30th day of April, 1902.

ARTHUR R. DICKEY.

In presence of- R. S. HOLDEN, W. H. BAKER.

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