US717558A - Contact device for time-detectors. - Google Patents

Description

No. 717,558. C PATENTED JAN. 6, 1903.

H. W. DURKEE & W. L. COSGROVE. CONTACT DEVICE FOR TIME DETECTORS.

PPPP ICATION FILED APR. 30, 1902.

OOOOOO L.

UNITED STATES PATENT OFFICE.

HARRY W. DURKEE AND WILL L. OOSGROVE, OF CLEVELAND, OHIO.

CONTACT DEVICE FOR TIME-DETECTORS.

SPECIFICATION forming part of Letters Patent No. 717,558, dated January 6, 1903.

Application filed April 30, 1902. Serial No. 105,412. N0 m em To ctZZ whom, it may concern.-

Be it known that we, HARRY W. DURKEE and WILL L. Cosonovn, citizens of theUnited States, and residents of Cleveland, county of Ouyahoga, State of Ohio, have invented certain new and useful Improvements in Contact Devices for Time-Detectors, of which we hereby declare the following to be a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

Onr invention relates to improvements in means for electrically operating a wire-detective device, and has especial reference to contact devices attached to adjacent movable partssuch as a door and its casing, a window and its casing, or a sliding drawer when it is designed to register upon a suitable clock or dial the exact time at which the movable part is opened, as with the outer door of a store or factory, so as to determine and record the time the door is closed at night and opened in the morning or the exact time the door may be opened during the night. To accomplish this object, we employ the duplicate contact devices, in connection with an electrical generator or battery and a recording-dial and suitable operating mechanism therefor, as hereinafter described, shown in the accompanying drawings, and specifically pointed out in the claims.

In the accompanying drawings, Figure 1 is a perspective view of a door and casing upon which the contact devices are mounted. Fig. 2 is a longitudinal vertical section of one of the contact devices, taken on the center line. Fig. 3 is a front elevation thereof, a portion of the top being broken away to show the inner construction. Fig. 4 is a face view of a suitable detachable dial, showing twenty-four divisions.

In the views, 1 is a door; 2, the casing; 3,

the contact device upon the door; 4, the con-.

for an electric In Figs. 2 and 3 are shown the details of construction of each one of the contact devices. Here 11 is a tubular stem which is secured to the door or casing, as the case may be, by means of the integral foot 12, and 13 is a rectangular case which is formed at the outer extremity of the stem, in which slides the beveled contact-block 14, which is forced outwardly by means of the spring 15. Shoulders 16 prevent the block from falling out of the case 13. The block 14, spring, case, and stem are in electrical contact, and a bindingpost 17 serves to attach one of the circuitwires 18 thereto. The other wire 19 of the circuit is secured to the spring 20, which is insulated from the case at 21. This spring is engaged by the block 14 when depressed, and thus the circuit is completed.

The two contact devices are exactly alike, except that one is longer than the other, so that it will project beyond the other, as seen in Fig. 1, and be out of contact therewith until the door is opened. As the door opens the doubly-beveled extremities of the depressible blocks come into contact with each other and by depressing each other connect the circuit leading to each. It will also be seen that if for any reason one of the devices should be out of order and fail to work the other would complete the circuit and record the time when the door opened, and for this reason pushing in one of the contact-blocks to preventthe two contacts from engaging would have no effect, since either would effeet the desired result as soon as pushed in.

In use the clock. is placed wherever convenient, as=in the proprietors desk, and the connections made. Then the proprietor alone will be cognizant of the coming and going of his employees.

A switch 22 is employed to break the circuit when it is not desired to use the detective device.

The dial may be made to record twelve or twenty-four hours, at pleasure.

Having described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. The combination with separable portions as a door and its casing, of a contact device on each portion adapted to engage when the door is opened, consisting of a depressible block in each portion, a case for each block in which it is depressibly secured, beveled outer edges to said blocks, springs under said blocks, one in contact and one out of contact with said blocks, a clock-dial, a puncturing-needle therefor, the said needle serving also as the armature of an electromagnet, a battery and circuit-wires connecting the contacts, battery and magnet, substantially as and for the purpose set forth.

2. In each of a pair of duplicate contact devices for the purpose described, in combination, a hollow stem, a casing, a depressible block, a spring on which said block rests, and an insulated contact in said casing adapted to be engaged by the depressible block when it is forced into the case by contact with the opposing block, substantially as described.

3. Contact devices for a time-recorder tact in each case adapted to engage the depre'ssible block when the contact devices are brought into contact with each other, substantially as described.

4. In a contact device, a stem provided with a foot, a case at the outer extremity of the stem, a block slidingly mounted therein and provided with a doubly-beveled outer extremity, a shoulder in said block and corresponding shoulder in the case, a spring adapted to force the said block against said shoulder, and a spring-contact underneath said block, insulated from the case, and normally out of engagement with the block, and circuit-wires of a recording instrument communicating with the case and insulated con-- tact, substantially as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

HARRY W. DURKEE. WILL L. COSGROVE.

Witnesses:

WM. M. MONROE, GEO. S. ADDAMS.

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