US854205A - Circuit-closing device. - Google Patents

Description

PATENTED MAY 21, 1907.

I. W. ERICKSON.

CIRCUIT CLOSING DEVICE.

A'PPLIOATION FILED JAN. 29. 1907.

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Wz/wMh- 4 rnnoamo WM. ERICKSON, oF NEW YORK, N. Y.

CIRCUIT-CLOSING DEVICE.

Specification of Letters Patent.

Patented May 21, 1907.

Application filed January 29, 1907. Serial No. 354,606.

I0 rtZi whom it may concern- Be it known that I, Fa'nnnmc WM. ERICK". son, residing at New York, in the county of New York and State of New York, have invented certain Improvements in Circuitlosing Devices, of which the following is a specification.

The present invention relates to circuit closing devices such as commonly used in connection with annunciators and vibrating bells in the common house signaling systems.

The ordinary push buttons employed as a circuit closer in house systems are made upon a substantially uniform pattern, i. e., with two metal parts both attached to a base piece by means of small screws which are manipulated to secure the wires of the conductors, and are frequently lost and broken, and in an installation in a large building there is much loss from such parts and more vexation. At the same time such devices are frequently out of order owingto the frail nature of the parts, and also because the outer portion can be unscrewed and carried away.

The invention about to be described refers to an improvement over the ordinarypush button, in that the device is self contained, simple, and cannot be taken "apart by mischievous persons.

In the accompanying drawings forming a part of this specification, Figure l is a perspective view of the improved device detached. Fig. 2 is a sectional view of the same located in a wall, and Figs. 3 and 4 are respectively a perspective and a plan view of detached parts.

In the drawings B represents the face of a wall or portion of wood work in which the push button is located, and A is a metal face plate secured to the wood-work b the screws 8, 8, having a centrally threa ed hole in which the push button is screwed. The device is composed of substantially two parts i a and c screwed to each other, each part carryside of the disk (1 while the enlarged part4;-

is adapted to slide in the shell I), this shell 2' is drawn up from sheet metal into the desired shape. A lass or other ornamental button 1 is held in t e push d by the turned over edges o'fthe art 2, and a metal spindle 7 having its head under the said button depends into the lower part 4 and is steadied by the fiber disk e through which its body passes, the disk is held in place by the indentations 5, 5, in the walls of the part 4, the space between the disk and the button being filled with cement 6.

Upon the end of the shell I) is a fiber disk 9 having a central slot 9, and under said disk are the disks h, it, one upon the other bothprovided with the peripheral slots 14, 14 and the central slots 15, 15 and under these disks is the hemi-spherical insulating part serving as a lining to the part 0 having an extension through the orifice in the part c. On each side of the lower part of the device are the contact sprin s j, j, made from a strip of thin resilient meta and bent into the shape represented in Fig. 3, having two parallel sides or arms 10 and 12 the former the longest and curved at its end, the two sides being jboined by a loop shaped end 11. In assemling the parts two spring pieces 7' have their spring sides 10 pressed through the slots 15, 15 in the two disks h, it, While the shorter arms extend up the sides of the slots 14 and their extreme ends are bent over as shown and clenched ontothe upper side of the top disk the part 76 is placed within the part c, the conductors have their bared ends inserted into the loops 11, of the springs j and soldered and are drawn down while cement Z is placed in the lower cavity to fill all interstices, and the disks h are pressed firmly down, and the diskg is placed over the ends 10 of the springs j its slot 9 permitting the springs to play sidewise.

It will be seen that the button is placed in the end of the sleeve b and pressed outward, and when the part bis to be screwed onto the part c a spring f is inserted so that one end bears upon the disk e, and when the parts are screwed together, the opposite end of the spring f bears on the disk g.

The several disks 0, g and h as well as the piece is are stamped or pressed out from the common insulating fiber.

When the device is attached to the plate Athere is nothing that can be unscrewed ,from the outside by the hand and it makes a good solid appearance. When the button is depressed the end 8 of the spindle 7 enters,

separates and. makes a scraping solid contact with the springs j, j, and when released the spring f brings the button sharply away to its normal position.

I claim as my invention:

1. A circuit closer consisting essentially of outer and inner parts adapted to be separably attached to each other, the outer part having an external flange from which extends an externally threaded shell, a movable tubular portion in said shell one end being of reduced diameter and extending through an orifice in said flange and constituting the push, and holding an insulated dependent spindle; the inner part adapted to engage the said threaded shell and having an orifice at its inner end and two contact springs secured in suitable insulating disks adapted to engage said spindle, with means to connect conductors passing through the, said orifice to the contact sprin s, and a spring adapted to keep the spindle rom the contact s rings.

2. A circuit closer consisting essentially of outer and inner tubular parts adapted to be separably attached to each other, the outer part having an external plate from which extends an externally threaded shell, a movable tubular portion in said shell one end being reduced in diameter to form a shoulder extending through an orifice in said plate and abutting against the inner face of the same and constituting the push, and holding a dependent metal spindle supported in the shell by an insulating disk and cement; the inner part adapted to engage the said threaded'shell at one end, and having its opposite end preferably hemi-spherical witha central l i i l other, the outer part provided with an external flange servlng as an abutment when the tubular parts are inserted 1n a support, havportion to form a shoulder, a push button fitting in the tubular part with an'outer portlon of smaller diameter projecting from the sald orifice and resting against said shoulder, an insulating disk held in the button tl'n'ough which extends a metal spindle whose head is held in place by cement; the inner part havmg a hemi-spherical end with a central orifice and containing insulating disks, two contact springs supported by said disks adapted to engage said spindle, and provided with means for connecting insulated conductors Inside th' inner part, and a spring adapted to keep the spindle from the contact springs, as set forth.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses, this 26th day of January, 1907.

I FREDERIC WM. ERICKSON- -Witnesses:

J. M. WATTERs HARnIEr LEVI.

mg an orifice of less area than the tubulartubular parts separably connected with each

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