US1219933A

US1219933A - Electric advertising device.

Info

Publication number: US1219933A
Application number: US9218816A
Authority: US
Inventors: William Cochran Gillespie
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-04-19
Filing date: 1916-04-19
Publication date: 1917-03-20
Anticipated expiration: 1934-03-20

Description

WILLIAM COGHBAN GILLESPIE, 0F P HQENIX, ABIZOHA.

ELECTRIC ADVERTISING DEVICE.

Specification of Letters Patent,

Patented'Mar. 20, 1917.

Application filed April 19, 1916. Serial No. 92,188.

To all whom it may concern;

Be it known that I, WILLIAM G. GILLES- PIE, a citizen of the United States, and a resident of Phoenix, in the county of ancopa and State of Arizona, have invented a certain new and useful Improvement in Electric Advertising Devices, of which the following is a specification.

My invention relates to improvements in electric advertising devices, and it consists in the combinations, constructions, and arrangements herein described and claimed.

An object of my invention is to provide a device in which a series of slides or plates may be brought succemively before a projecting apparatus where they may be left for a predetermined period and then moved while another slide or plate is brought into position.

A further object of my invention isto provide automatic electric means controlled by a thermostat for accomplishing the above named object.

A further object of my invention is to provide novel operating means including a pair of solenoids with means for actuating the solenoids alternately.

Other objects and advantages will appear in the following specification, and the novel features of the device will be particularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawing forming part of this application, this drawing being a face view of the general arrangement of the apparatus.

In carrying out my invention I provide a disk 1 having a series of notches 2 to rovide teeth 3 on its periphery. The dis is designed to be secured to a central shaft 4.

Disposed about the central shaft is a series of stop pins 5, while farther from the shaft is a series of rectangular openings, such as those shown at 6. Over these openings may be placed the slides or plates 7. The inner ends of these plates rest against the stop pins 5, while the outer ends may be held by the end of a leaf spring 8, which is secured at its center 9 to the disk 1. These springs are so placed that one spring will hold two plates, as clearly hown 1n the drawing.

At 10 and 11 I have shown a pair of solenoids having a common core 12. The latter is provided with a pivoted pawl 13, which is held by means of a spring 14 against the periphery of the disk. A spring 15 is provided for preventing the backward move ment of the disk.

Secured to the core 12 is an arm 16 which engages a conducting rod 17 slidably disposed m a frame or runway 18 carried on a bracket 19 secured to an insulating base plate 20. The latter is provided with the

spring contacts

21 and 22, these contacts being arranged to be engaged bythe rod 17 in its movement.

At 23 I have shown an insulating base upon which is mounted a thermostatic member, which I have denoted in general by 24. The latter may consist of a rod 24* which is secured at one end to a bracket 25, and whose opposite end is arranged to pass through a guide post 25. The rod 24 bears a laterally extending plate or arm 26, which forms a movable contact member. Secured to the base 23 are the

posts

27 and 28, the former bearing a contact screw 29 and the latter a similar contact screw 30. The explanation of the circuits will best be understood by a statement of the operation of the device.

Consider the apparatus in the position shown in the figure. Current will enter by one of the lead wires such as that shownat 31, and will take the following path: 32, 33, 17, 21, 34, rheostat 24, 35, 36, 37 to lead wire 38. As soon as the thermostatic member begins to heat up the rod 24 will begin to expand and will move the arm 26 into contact with the screw 30. When this occurs, current will pass from the wire 34 by means of conductor 39, through the solenoid 11, thence by means of conductor 40 through screw 30, arm 26, conductor 41, and back to the other lead by way of 36, 37. The solenoid 11 being energized will cause the movement of the core 12 and the disk will be turned one tooth through the medium of the pawl 13. The movement of the core 12 will cause the rod 17 to break contact with the spring 21 and to make contact with the spring 22. The solenoid 10 will not immediately be energized, but it will be energized'as soon as the thermostatic member has cooled, thereby bringing the contact 26 back against the contact screw 29. This energizing circuit is as follows: from 31, through 32, 17 22, 42,

solenoid

10, 43, 27, 26, wire 38; The energization of the solenoid 10 will cause the retraction of the core 12,

36, 37, back tolead .device requires no further attention.

by moving them farther apart.

I claim 1. The combination with a rotatable disk, 7

of means for intermittently rotating said disk, said means comprising a pair of solenoids, a common core for said solenoids, means connected with said common core for rotating said disk, and thermostatic means for controlling said solenoids.

2. The combination with a rotatable slide carrier, of means for intermittently rotating said slide carrier, said means comprising a pair of solenoids, a common core for said solenoids, means connected with said common core for rotating said slide carrier, and thermostatic means for controlling said solenoids, said thermostatic means being arranged to energize one of said solenoids when heated and the other of said solenoids when cold.

3. The combination of carrier, having teeth on its periphery, of a pair of solenoids, a common core for said solenoids, a pawl carried by said common core and arranged to engage the teeth of said carrier, a switch arranged to be operated by said core, and a thermostatic device a rotatable controlled by said switch and having contacts forcontrolling the circuits of the solenoids.

4. The combination of a rotatable slide carrier, having teeth on its periphery, of a pair of solenoids, a common core for said solenoids, a pawl carried by said common coreand'arranged to engage the teeth of said carrier, 3, switch arranged to be operated by said core, and a thermostatic device controlled by said switch and having contacts for controlling the circuits of the solenoids, the movement of the thermostatic member in one direction serving to complete the actuating circuit of one of said solenoids, and the movement of the thermostatic member in the other direction serving to complete the actuating circuit of the other solenoid. I

5. The combination with a slide carrier having teeth on its periphery, of a pair of solenoids, a common core for said solenoids, a pawl secured to said common core and arranged to engage the teeth of the carrier, an arm carried by said core, a movable contact member secured to said arm, spring contacts arranged to be engaged by said movable contact member, a thermostat having an expansible core, stationary contacts carried by said thermostatic member and arranged to be engaged by said arm, connections between said thermostatic member and said spring contacts, and connections between the contacts of the thermostatic member and said solenoids.

WILLIAM COCHRAN GILLESPIE. lVitnesses:

SARAH E. HENDERSON, O. E. PLATH.