Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS566087 A
Publication typeGrant
Publication dateAug 18, 1896
Filing dateJan 25, 1896
Publication numberUS 566087 A, US 566087A, US-A-566087, US566087 A, US566087A
InventorsJ. Mccormack
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electrical advertising device
US 566087 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)


Patented Aug. 18, 1896.




SPECIFICATION forming part of Letters Patent No. 566,087, dated August 18, 1896.

Application filed January 25,1896. Serial No. 576,780. (No model.)

To all whom it may concern: J

Be it known that I, J OHN J. MCCORMACK, of Brookline, in the county of Norfolk and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Electrical Advertising Devices, of which the following is a specification.

My invention relates to adevice for advertising, consisting of a glass or other transparent plate, upon which the advertisement is printed, written, or stamped, and illuminated by an electric or other light, placed so as to shine through it,and thus exhibit the for the purpose.

devices and words onthe transparent plate.

While my invention is more especially intended for use as a means of advertising, and I intend more particularly to use it for streetcars, yet it is obvious that it may be used for many other purposes.

In the drawings I have shown an octagonal device, that is capable of displaying eight different advertisements, and adapted to display each for a predetermined period of time. The devices automatically turn, so as to display each in turn at the opening prepared It will be readily seen, however, that various forms of my device may be made without materially departing from my invention.

. Figure 1 shows an elevation of a street-car with my advertising adjustment placed on the top thereof, the opening through which the advertisement is seen being on the out side, so as to be read by persons on the street, and on the left-hand upper end I have shown a portion of the car broken away, so as to show the operating device hereinafter to be described. Fig. 2 is an enlarged view of the device, which is to be attached to the top of the car; Fig. 3, a longitudinal section thereof on line a: m, Fig. 4; Fig. 4, a cross-section on line y y, Fig. 3; Fig. 5, the same on the line z P, Fig. 3; Figs. 6, 7, and 8, details of the operating device to be hereinafter explained.

a a is a box, substantially of the form shown in Figs. 1, 2, and 3, to be attached by suitable supports to the roof or upper portion of the street-car, with an opening on one side, through which the advertisements are shown. These advertisements are suitably placed on glass strips suitably attached to the octagonal frame I), which revolves in box a by means of the ratchet-wheel c and pawl d. The ratchet-wheel and pawl are operated by means of magnets placed at one end of the box a and energized through a shunt-current from the main wire, which furnishes power to the electric motor used for operating the car. The locking-pawl d prevents the ratchet b from revolving more than one-eighth turn at each closure of the circuit.

f is a spring which returns the pawl to position to act again. The frame b is supported at each end by bearings g g, made of tubing. Attached to said tubing is rod h, on which are fastened a suitable number of electric lamps i i, to properly illuminate the advertising-plates, the current of these lamps being supplied through the street-current from the main power-wire, the wire connection of the lamps passing through the tubing at on end, as shown in Fig. 3.

The magnets 6, operating the ratchet-wheel which revolves the frame I), are controlled by an automatic circuit-breaker 19, consisting of a small eight-day clock m, (without a dialplate,) on the face of which, in place of the figures ordinarily used, is fastened a small disk at, Fig. 6, which revolves by means of the clock-movement.

0 o are buttons on the face of the disk, which come incontact with the spring 13 by the revolution of the disk, thereby closing the circuit at stated intervals to energize the magnet. This automatic current breaker may be placed inside of the car or at any point easy of access. The face of the disk may be covered by a hinged door to prevent its being injured by careless or mischievous persons.

1" is an octagonal-faced lock-nut on the end of the box a, and having the spring 5 hearing upon it, as shown in Fig. 8, the object being to keep the box from moving, except as it is turned by the mechanism above described.

VVhat I claim, and desire to secure by Letters Patent, is-

In an advertising device, the stationary box, the revolving inclosing frame placed therein, supporting-standards, and hollow axles upon which the case revolves, combined with a support for the lamps, an electricallyoperated mechanism for causing the case to revolve, a clockwork, provided with a revolving disk n, having buttons 0 on its outer side, a spring 19, which makes contact With the buttons at regular intervals, a conducting-Wire connected to the spring and the electrically-operating mechanism, and Wires which extend through the axles and connect with the lamps, substantially as set forth. JOHN J. MCCORMAOK. WVitnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5315776 *Oct 7, 1992May 31, 1994Everbrite, Inc.Multiple-display sign device
Cooperative ClassificationG09F13/00