US1037710A

US1037710A - Clock-controlled switch.

Info

Publication number: US1037710A
Application number: US69973712A
Authority: US
Inventors: Thomas A Zimmerman
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-05-25
Filing date: 1912-05-25
Publication date: 1912-09-03
Anticipated expiration: 1929-09-03

Description

T. A. ZIMMERMAN.

CLOCK CONTROLLED SWITCH.

APPLICATION FILED MAY 25. 1912.

1,037,710, Patented se t. 3, 1912.

FIG. 1

WITNESSES eene eee COLUMBIA PLANDGRAPH 60., WASHINGTON, D. C

mvamoiz ATTORNEYS THOMAS A. ZIMMERMAN, OF SWISSVALE, PENNSYLVANIA.

v CLOCK-CONTROLLED SWITCH.

Specification of Letters Patent.

Patented Sept. 3,1912.

Application filed May 25, 1912. Serial No. 699,737.

To all whom it may concern:

Be it known that I, THOMAS A. ZIMMER- MAN, a citizen of the United States of America, residing at Swissvale, in the county of Alleghenyand State of Pennsylvania, have invented certain new and useful Improvements in Clock Controlled Switches, of which the following is a specification, reference being had therein to the accompanying drawing.

This invent-ion relates to a clock controlled switch, and more particularly to the electric lighting of show windows and the lights.

The primary object of my invention is to provide a new and improved clock controlled switch designed for automatically turning on and off at predetermined time the electric lamps used in a show window or other place, for instance, turning the lamps on at the beginning of dusk and turning them off at midnight, or, if desired turning on a series of lamps at the beginning of dusk, turning off the lamps at midnight, and turning on a single lamp during the remainder of the night. For the purposes mentioned use is made of an alarm clock, the clock having a double alarm mechanism that can be set to actuate a switch arbor at a pre-determined time and the switch arbor can be provided with a plurality of contacts whereby a plurality of the electric circuits can be opened and closed.

The invention will be hereinafter specifically described and then claimed, and refer ence will now be had to the drawing, wherein Figure 1 is a plan of the clock controlled switch, and Fig. 2 is an elevation of a portion of the same.

In describingmy invention by aid of the drawing above referred to, I desire to point out that I intend said views as merely illustrative of an example whereby my invention may be applied in practice, and I do not limit my claims to the precise arrangements and construction of the parts inclicated. The following description is therefore to be construed broadly, as including substitute arrangements and construction which are the obvious equivalent of those shown.

The drawing shows a clock 1 that is con structed upon the lines of an ordinary alarm I clock, with the exception that the clock has a double alarm mechanism and the

shafts

2 and 3 of the alarm mechanism protrude from the rear face of the clock. The clock also includes the ordinary and well known winding mechanism whereby the alarm mechanism can be set to operate at a predetermined time. 7

The rear ends of the

shafts

2 and 3 are provided with

large gear wheels

4 and 5 respectively and these gear wheels mesh with small gear wheels 6 and 7 mounted upon a sleeve 8 that is loosely mounted upon a switch arbor 9. The switch arbor 9 has ratchet wheelslO and engaging said wheels are spring pressed pawls 11, carried by the sides of the gear wheels 6 and 7. The pawls are reversely arranged and one of said pawls recedes over said wheels while the other pawl causes the ratchet wheels to rotate in unison with said gear wheels.

The switch arbor 9 extends into a socket 12 and has blades 13 adapted to engage contacts 15 arranged within the socket. The blades 13 and the contact 15 are of such construction that positive and reliable c011- nections can be made either for breaking or making a circuit.

. In operation, the shaft 2 rotates at a predetermined time to operate the switch arbor 9 and close a circuit that lights a lamp. When the shaft 2 is operated, the gear wheels 4 and 6 are revolved and the pawl 11 of the gear wheel 6 causes the ratchet wheel 10 to rotate in unison with the gear wheel 6. The switch arbor 9 is therefore rotated and during its operation the pawl 11 of the other gear wheel recedes over the other ratchet wheel. At a pre-determined time the shaft 3 is placed in operation and the switch arbor 9 is again moved whereby the electric circuit will be broken and the lamp turned out.

hat I claim is:

1. In a clock' controlled switch, the combination with a switch arbor, of ratchet wheels carried thereby, a sleeve loosely mounted upon said switch arbor, gear wheels carried by said sleeve, pawls carried by said gear wheels and engaging said ratchet wheels, and gear wheels actuated by a clock mechanism for ultimately imparting movement to the first mentioned gear wheel and said switch arbor.

2. In a clock controlled switch, the combination with a switch arbor, of ratchet wheels mounted thereon, gear Wheels loosely supported by said switch arbor, reversely arranged pawls carried by said gear wheels and engaging said ratchet wheels, and means including a clock mechanism for im- 7 parting movement to said gear wheel whereby said ratchet wheels will be ultimately revolved.

In testimony whereof I affix my signature in the presence of two witnesses.

THOMAS A. ZIMMERMAN. Witnesses:

S. C. TRUXAL,

GEORGE HAINE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.