US921385A - Annunciator. - Google Patents

Description

4 c. n. moons.

ANNUNGIATOR.'

APPLICATION FILED JULY 6,1907.

921 .385, Patented May 11,1909.

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@Za/ucZefl Emakd UNITED STATES PATENT OFFTCE.

CLAUDE D. ENOOHS, OF LA OROSSE, WISCONSIN, ASSIGNOR TO THE VOTE-BERGER COMPANY, A CORPORATION OF WISCONSIN.

ANN UNCIATOR.

Specification of Letters Patent.

Application filed July 5, 1907.

Patented May 11, 1909.

Serial No. 382,233.

To all whom it may concern:

Be it known that I, CLAUDE D. ENOOHS, a citizen or" the United States, residing at La ()rosse, in the county of La Crosse and State of lVisconsin, have invented a new and useful Improvement in Annunciators, of which the following is a specification.

My invention relates to improvements in annunciators and has for its primary object a device of its kind having a drop shutter which obscures the end of the armature tongue from view and restoring mechanism which can never exceed a certain amount of force in closing the shutter no matter how hard the plug is inserted.

To accomplish these objects and such othersas may appear, the invention comprises certain novel combinations of parts hereinafter more particularly described and claimed.

In the accompanying drawings, forming part of this specification, Figure 1 is a side elevation of my invention; Fig. 2 is a plan view looking down upon Fig. 1; Fig. 3 is another plan view looking up at Fig. 1; Fig. 4 is a longitudinal section of Fig. 1 showing the shutter open and the plug and drop coils removed; Fig. 5 is an enlarged sectional view of Fig. 1 taken on the line X-X; Fig. 6 is a perspective view of the shutter spring; Fig. '7 is a detail view of a portion of the free end of the latch bar, and Fig. 8 is a perspective view of the drop coil.

In the drawings are included the drop mechanism A and the jack mechanism B which are associated together in the usual manner to operate the drop shutter and make electrical connections with the various circuits. The drop mechanism includes a tubular shell 2, one end of which is closed and the other end open and provided with a rigid core 3. A removable drop coil 4 having two rigid projecting terminals 5 on its outer end is adapted to slip over the core and into the shell. The inner end of the drop coil has a small point 6 which passes into an opening 7 in the closed end of the shell and holds the coil from turning. The outer end of the core 3 is contiguous to an armature 8 and attracts it when the drop coil is energized. This armature carries a latch 9 and is pivoted in a yoke 10 which is removably fastened to the shell by means of spring catches 11. The armature 8 has openings 12 through which the terminals 5 01 the drop coil project without coming into. contact therewith. The

closed end of the shell is fastened to an insulating head block 13 which carries a swinging drop shutter 14. This shutter is pivoted in the usual manner as at 15 and tends to fall into a horizontal position, but isnormally held up by the latch bar 9 which engages a lug 16 carried by said shutter. A tongue 17 is provided on the lower edge of the drop shutter and is turned into a chamber 18 in the head block. A face plate 19 back of the shutter is fastened on the head block by any suitable means and is slotted at 20 so that when the shutter closes upon the face plate this lug 16 recedes into said slot. Below the shutter is a socket 21 passing through the head block which is adapted to receive a connecting plug 22 in the usual manner.

Moving horizontally to close the inner end of the socket 21 is a pair of slides 23 which are adapted to close together at the inner end of the socket. Between the inner end of the shell and the head block is a metal plate 24 which has a backwardly bent extension attached to the open end of the shell by means of the screws 25. The adjacent ends of the slides 23 are turned inwardly together to form guide faces 26 between which the sleeve 27 of the plug is adapted to pass when inserted through the socket. The slides are formed with spring arms 28, the tendency of which is to close the slides together over the inner end of the socket. A shutter closing spring 29 has'its ends 30 and 31 attached to the slides 23 and working freely through slots 32 in the head block and plate. This spring is coiled between its ends and formed with a loop 33 which is adapted to close the shutter 1 1 by impinging against the tongue 17 when the slides are spread apart by inserting the sleeve of the plug through the socket. The spring 29 works freely in the chamber 18 of the head block. W hen the plug is withdrami from its socket the slides close automatically and the shutter is retained in closed position by means of the latch 9. The upper ends of the head block and plate 24 are slotted at 3 1 to permit the latch to engage the lug 16 on the shutter. When the drop coil is energized and the plug removed, the latch bar disengages the shutter and allows it to fall. The jack springs 37, 38 and 39 and the arms 28 of the slides are supported upon the end of the plate 2 1 adjoining the open end of the shell by means of screws and are insulated from each other and said plate by pieces of fiber 36 or other suitable material.

The jack springs 37, 38 and 39 are of ordinary construction and are adapted to be connected with the line and magnet circuits in the customary manner. pieces of the jack springs 37 and 38 are each provided with a connector 40 which is ivoted thereto and adapted to make metalllc connection with the rigid terminals 5 of the drop coil. Each connector is split and preferably made of spring material to cause a firm contact between it and the terminal which it engages. The leads 41 which are attached to the shell 2 are for the purpose of providing a night call circuit in connection with the shutter in the usual way.

l l hen it is desired to remove or repair the drop coil the connectors 40 are swung down into the position shown in Fig. 4:. The armature is removed by disengaging the yoke 10 from the spring catches 11 and the drop coil may be then drawn out of the shell. When the plug 22 is inserted in the socket after a call has been indicated by the dropping of the shutter 14, the tip and sleeve 27 of said plug respectively contact with the jack springs 37 and 39 in the usual way. As the sleeve 27 passes through the socket it impinges against the slides and spreads them apart. This connection simultaneously draws the loop 33 of the spring 29 down, carrying with it the ton ue 17 and closing the shutter with its lug in engagement with the latch 9.

In accordance with the patent statutes, I have described the prmciple of operation of my invention, together with the apparatus which I now consider to represent the best The tail embodiment thereof, but I desire to have it understood that the apparatus shown is only illustrative and that the invention can be carried out by other means and applied to uses other than those above set forth, within the scope of the following claims.

Having described my invention What I claim as new and desire to protect by Letters Patent is:

1. An annunciator comprising a shutter, an electro magnet associated with said shutter, an armature provided with an opening and a latch for said shutter, a removable coil on said magnet provided with a terminal extending through said opening, and a spring connector pivoted upon a support adjoining said coil having a split free end and adapted to turn longitudinally and engage said terminal by the arms on said split end.

2. An annunciator comprising in combination an electro magnet, a drop shutter associated with said magnet, an armature provided with a latch for said shutter, a removable coil on said magnet provided with a terminal, a connector consisting of a split spring arm pivoted upon a support adjoining said coil and adapted to engage said terminal between its split portions, and means for moving said shutter into engagement with said latch.

In testimony whereof, .l have signed my name to this specification, in the presence of two subscribing witnesses.

CLAUDE l). ENOCHS. ll itnesses E. C. BREWER, R. JENsoN.

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