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Publication numberUS1102160 A
Publication typeGrant
Publication dateJun 30, 1914
Filing dateMay 21, 1914
Priority dateMay 21, 1914
Publication numberUS 1102160 A, US 1102160A, US-A-1102160, US1102160 A, US1102160A
InventorsBernard S Mcfarlan
Original AssigneeBernard S Mcfarlan
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1102160 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)



1,102, 160, Patented June 30,1914,



Specification of Letters Patent.

Patented June 30, 1914.

Application med August 14, 1912, Serial No. 715,096. Renewed m 21, 1914. Serial no. 840,121.

"new and useful Improvements in Advertising-Signs, of which the following is a speci fication.

This invention relates tonnprovements 1n exhibiting apparatus, and particularly to such as rovide for color changing effects.

The o jectin view is the pro ecting of a great variety of colors and shades in suc cession by a cheap and simple apparatus.

With these and further objects in view,

aslwill in part hereinafter be set forth and in part become apparent, the invention comprises certain novel construction, comb nation and arrangement of parts as herein specified and. claimed.

In the accompanying drawings. Figure lis a perspective view of an apparatus embodying the features of the )resent lIlV11-,

tion; Fig. 2 is a longitudina vertical central section therethrough; Fig. 3 is a transverse horizontal section therothrough taken on a plane indicated by line 33 of Fig. 2. Fig. 4 is a fragmentary perspective view showing more clearly certain details of the general structure of the device. Fig. 5 is a horizontal sectional view of the revolving cylinder.

Referring to the drawings by numerals, 1 indicates a housing or casing having an open front, preferably surrounded by a frame 2 adapted to receive a sign bearing slide 3. The frame 2 is preferably formed with a slot 1 at one end with grooves along its upper and lower sides for receiving and guiding the sign bearing slide 3. The slide 3 ma, consist of transparent glass on which the sign to be displayed has been painted or otherwise applied, or may consist of any transparent plate or screen similarly hearing a sign, or in lieu thereofa sheet of translucent paper hearing the sign may be employed.

Substantially centrally of the housingl is arranged a lamp 5 which may be of any convenient type, but preferably, where possible, consists of an incamlescent electric bulb sustained on a spider. or other 0 enivork support o, mounted on the floor 0 the housing 1, said flooringbeing apertul'ed centrally for the free :ulinission of air through the bottom of the housing and up past the lalllip.

or convenience of reference the open side of the housing 1 will be referred to as the front and the opposite side as the rear. In the rear-of the lamp 5 is arranged a suitable reflector 7, and at the front are arranged translucent colored screens 8, 9 and '10, each occupyin its relative amount of space in front of the lam, such space being preferably cqliially divi ed, butobviously capable of ot ier divisions, The screens 8, 9 and also are preferably flat and disposed in angular relation, but may be otherwise shaped. Though each of the said screens is translucent it is preferably colored, and for purposes of illustration it may be assumed that the primary colors are employed, forinstance the screen 8 being colored blue, the screen 9, yellow, and the screen 10 red. Obviously other colors or shades may be employed with varying effects, according to the results desired.

The reflector 7, andscreens 8, 9 and 10 are supported by and held stationary upon the floor of the casing 1 and are surrounded by a revolving cylinder 11. The cylinder 11 is made up of a series of screens 12, 13, and 14 spaced apart by alternating screens 15. All of the screens are preferably merely clear, while the several screens 12, 13, and 14 are colored, as for instance screen 12 may be colored red, screen 13 blue and screen 14 yellow. The primary colors are here referred to by way of example as they ailt'ord almost a limitless variety of shades from the method of connningling colors as hereinafter set forth, but it is apparent that other colors than red, blue and yellow may be utilized on screens 12, 13, and 14.. In fact different colors may be utilized on said screens from the colors employed on screens 8, SJ and 10, but by preference I am employing colors on screens 8, 9 and 10 hearing a fixed value in relation to the colors of screens 12, 13 and 14.

. Within the cylinder 11 is arranged'a supporting bracket 16, preferably mounted on the floor of the housing 1, and extending to a point adjacent to the outer end of the cylinder l]. The bracket 16 is preferably formed of springmaterial and has its end portion terminating in a horizontal section which is slit as at 17, through which extends vertically, a bearing pin 18. The bracket may v be apertured at 19 for more readily admitting the pin 18, but the pin is of sufficient size when projected through the-aperture to slightly spread the slit 17 and thus cause the parts of the bracket to clamp against the sides of the pin and firmly hold the pin in place. The'pin maybe readily releasedvby inserting an instrument in the slit 17 and spreading the same open.

into which the pin 18 extends, thus forming a stepped bearing, the upper end of the sleeve being closed and terminating in a threaded p i-e n A power-wheel 21 is arranged with its central portion resting upon and clamped to a shoulder at the upper end portion of the sleeve 27, the wheel being retained in position by a nut threaded onto the threaded portion 20 above the clamped portion. Each of theseveral'blades of the wheel is preferably formed at its outer end with a tab or projection 22, which extends through a ring 23 surrounding the wheel, each of said tabs being bent or swaged over to permanently support the ring on the wheel and to main- A tain the parts of the wheel in their given positions. The cylinder 11 has its upper end surrounding and snugly inclosing the ring 23 and fixed thereto by detachable bolts, or otherwise, as preferred.

Immediately above the cylinder 11, the housing 1 is preferably formed with a hollow hood 25, upstanding from the housing a distance sufiic ient to provide ventilating apertures 26 in vertical portions of the hood,

whereby air is permitted to escape freely from the housing, while the interior parts are protected against the weather.

In operation, the heat of the lamp 5 causes anupward current of air which, traveling past the wheel and out of the apertures 26, serves to revolve the wheel and thus revolves the cylinder 11. Assuming that the screen 13 is directly in front of screen 9 when the light is turned on, a yellow light is projected through the screen 9'and will appear through the blue screen 13 as a green light, while the edges of the transparent screen 15 near screen 13 will show a yellow light and the other portions of the said screen 15 will show varying shades relative to the proportionate amount of blending, blue from screen 8 with the yellow from screen 9, and red from screen 10 withthe yellow of screen 9. The transparent screen 15 when directly opposite screen 8 will, of coutsashow blue and when directly opposite screen 10 will show red. As a further illustration of the great variety of shades blue from screen 13 reaches the point in front of the red screen 10, a purple light Mounted on the J pin 18 is a bearing sleeve 27 which is formed with an upwardly tapering conical recess 1,1oaieo {one side of the yellowficre'en 9, the yellow light will be'projected" as a yellow light ,throu hthe central portion of the screen 15,

and t en the red screen 12 will next appear in from of the yellow screen 9 with the resultant projection of an orange light.

oint- -wh ere the screen When the slide 3 bearing the sign assumes the form of the glass plate the same is preferably in the form of prism glass in order to afi'ord the advantage of diffusion incident light rays from said light projectin means a and arranged with three flat faces isposed in angular relation to each other, each of the flat faces bearing one of the primary colors difl'erent from the other two, a translucent,

cylinder surrounding the screen and the light projecting mean and divided into sec 'tions alternating, clear, and. colored, and the colored sections being provided each with one of the primary colors and thelseveral colored sections being-arranged in succession with respect to their colors. and means for revolving the. cylinder.


2. The combination, with light projecting means, of a translucent screen bearing a plurality of colors disposed in the-path of rays from the light projecting means, a reflector at the opposite side of the light projecting means, a translucent cylinder surrounding the light projecting means and screen and bearing different colors, a bracket extending longitudinally of and within the cylinder in the rear of the reflector and having an upstanding pin at its upper end, and a power wheel journaled'on said pin and connected with the cylinder for rotating the cylinder when the wheel is'moved by movement of'air with respect .to the light projecting means.

3. The combination, with a sign support adapted to sustain a translucent sign, and a light projecting means adapted to project rays of light through such a sign, of a plurality of translucent differently colored screens arranged. between the light projecting'means and the sign, a cylinder, suriis rounding the said light projecting means 1,102,1eo a cent screens spaced apart, and transparent screens alternatin therewith, and means for revolving said cy inder. l

4. The combination with light projecting means, of a plurality of translucent, difi'erently colored screens disposed in the path of rays of light from said light projecting means, a series of translucent screens spaced apart and disposed to be moved across the path of said light rays, and transparent 10 screens alternating with the last mentioned translucent screens I In testimony whereof I aflix my signature in presence of two witnesses.


E. R. Sms, S. J. SPRAGUE.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5855428 *Apr 25, 1997Jan 5, 1999Medical Research CouncilApparatus for obtaining a desired tint
U.S. Classification40/480, 362/293, 362/277, 362/812, 362/373
Cooperative ClassificationY10S362/812, G09F23/00