US 2341223 A
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Description (OCR text may contain errors)
Feb. 8, 1944. w; U UE 2,341,223
ADVERTI SING PROJECTION Filed Oct. 11, 1940 Patented Feb. 8, 1944 UNITED STATES PATENT OFFICE ADVERTISING rnoamirion Application October 11, 1940, Serial No. 360,842 In Great Britain Octobcrll, 1939 5 Claims.
Apparatus, accordingto my invention, comprises or includes .a box or casing wherein are disposed an electric filament bulb or bulbs or other suitable means of illumination, a lens p0- sitioned in front of said illuminating source, and a glass prism disposed in front of said lens and whereby va coloured effect is imparted to the image when. projected, via an opening in said boX or casing, onto a screen or other surface.
Means may be provided whereby a wordor words or the like is or are included in the coloured image.
In one construction, the apparatus comprises or includes a confining casing or cabinet of any suitable shape or configuration (or said casing may form part of a shop window) and within said casing, say at a closed rear end, is mounted an electric light bulb behindwhich .is arranged a concave reflector. Also disposed in said casing and spaced in front ofthe lamp bulb is a magnifying lens of double-convex type and disposed between said bulb and lens is a stencil plate formed to produce-the notice or sign to be exhibited, so that when the bulb is illuminated an enlarged or magnified image in spectrum colours of the contents of the stencil plate appears on the light being projected onto a screen or other convenient surface. There is thus produced a variously coloured image having a decorative or ornamental effect and this without the.
use of coloured bulbs, coloured glass, and'suchlike devices customarily utilised for producing colour effect.
By the employment of said lens the words,
objects, or the like, formed by the stencil plate appear clear and distinct in the image.
Alternatively, in lieu of a stencil plate, the
the bulb or bulbs is or are illuminated and the light projected through the lens and prism onto v a screen or other surface.
When used as a shop window sign said stencil piate will be fitted in position in reverse manner so that the image if projected onto a translucent screen will read correctly to passers-by.
Said prism may be adjustably carried as by source.
means of rods or pins projecting from its ends and suitably mounted. The prism may be ro-' tatable by hand ,or it may be operatively connected with an electric motor or otherpower By revolving the prism changesin the colours .and shape of the image maybe effected.
I will further describe myinvention with the aid'of the accompanying sheet of explanatory drawings which illustrate, byway of example only, one mode of carrying "same into efiect.
In said drawing:
Fig. 1 is aside-sectional elevation,
Fig. 2 --a cross-section takenas on line A-A, Fig. 1, and
Fig. 3 a further cross-section taken as on line B -B, Fig. 1.
In the several views, like characters of reference denote like or equivalent parts wherever they occur.
Referringv to .the drawing, a, a represent complementaryhalf .portions of a ,metal casing of conical or tapering configuration, and within the closedrear .(larger) .end whereof is fitteda holder the other side of coverv e is formed with a spring in front of said lens is a glass prism. Fitted.
clip member e arranged to engage over a retain ing projection-gen; casing 11., a Cover 6 is also provided with an aperture for the passage of electricity supply flex 17 connected to holder 1) ,for bulb c. Said complementary casing parts a, a are hinged together at a. and are capable.
of being openedwhen the rear covere is lowered:
thesecasing parts-are also maintained closed a spring clip member a similarly to the: coverv clip e before described. Y
Secured in a locating ring h and spaced'in front of bulb -cis a double convex lens and adjustably fitted around the open front end 9 of casing a, a is-a sleeve carrying cheek mem bers k which act as bearings for'pins o, o. ,-s e.-.
curedtoa glass prism lsituated in front of t e opening a of the casing.
Upon illumination of said electricbulbc the light therefrom passes throughgand is :concen: trat by s dlensi; h lightb a the 'ina fie by way asi open a a an h q ehth prism Z, being dissociated ;into;- spectrum rays which. alter oie t o to a isu t ez c een .Q other su.ria.ce.whic .ma be'yfi ed; r mamb ordsu hiects between the bulb c and lens 9' a stencil plate or screen m which is located in a ring 21. and forms letters or other images as desired.
Said holder 1) carrying .1 Idtha ztheimaee sha a so how the i e. there 'i i t .r pos e,d 1
In lieu of a stencil plate, however, the filament or filaments of one or more electric light bulbs or tubes disposed in the casing, may be so shaped or configurated as to effect the formation of an image of required design, or the filaments of a plurality of bulbs or tubes, or the filament of a single bulb or tube may be so arranged as to make a word or other image when the bulb or bulbs or tubes is or are illuminated and the light is projected via the lens j and prism lthrough the apparatus onto a screen or other surface as hereinbefore described. The voltage of the current supply may, if desired, be reduced by means of a transformer.
In order to provide for variation of colour effects, a prism carrying spindle o is provided with a handle o whereby the prism may be revolved, spindle being fitted with a wing-nut o for locking the prism in any required position of adjustment. The prism-carrying sleeve is is also revolubly mounted on the front end of casing a, a and is fitted with a thumb screw p to maintain it in required position of adjustment: thus prism I can be rotated about the axis 0 and also-when the sleeve 70 with cheeks k is turned--about the iongitudinal axis of easing a, (1
To the underside of casing a, a is aflixed a projection q which is pivoted on a pin 1' carried by a U-shaped bracket s having a spindle s rotatably and slidably mounted in a vertical sleeve t of a stand t: thus the casing may be pivoted about the horizontal axis 1' to any required inclination, rotated about the vertical axis 8 or raised or lowered relative to thestand sleeve t for the purpose of effecting the required adjustment preparatory to light projection through casing a, a A thumb screw it is fitted at the top of sleeve t and a wing nut 12 on pin r to maintain the parts rigid when adjustment has been effected.
The apparatus may also be used for fioodlighting purposes or for use in theatres, cinemas, and the like.
Said stencil plate m may be readily removed and replaced by another when it is desired to change the sign or notice, and provision may be made for focusing adjustment of the stencil m and lens 7' within the casing.
In a further modification, the reflector d itself may be utilized to produce the image; for instance, the interior of the reflector may carry non-reflecting letters etcetera of the sign,- or conversely, the letters may be reflective and the remaining parts of the reflector interior nonreflective.
It will be obvious that various alterations or modifications may be made to the present apparatus without departure from the spirit and scope of my invention; for instance, the reflector may be made in various shapes or sizes in accordance with the designs or other matter to be projected for display: further, a moving presentation may be effected by manual or mechanical rotation of thereflector in lieu of or in addition to adjustment of the colour-producing medium.
What I claim as my invention and desire to secure by Letters Patent is:
1. Apparatus of the character described, comprising 'a casing consisting of complementary half portions, a cover mounted over oneend of the casing, being fitted over said half portions to aid in holding them closed, a sleeve fitted upon said half portions at the other end of the casing also aiding in holding said half portions closed, cheek members projecting forwardly of the sleeve and providing a bearing crosswise of the axis of the casing, a glass prism axially supported by said cheek members across the adjacent end of the casing, and means contained by the casing directing a light beam onto the prism for projection.
\ through the prism and away from the casing as means, a sleeve movably secured around the end of said frame or casing opposite to said casing.
cover, said cover and sleeve forming a means to assist in holding the frame or casing sectionsv closed cheek members fixed to and projecting forwardly of said sleeve and providing a bearing transverse the axis of the casing, a glass prism axially supported by said cheek members across the adjacent end of the casing adapted to dissociate light passed through said light concentrating means in the casing into spectrum rays.
3. Apparatus of the character described, comprising a casing consisting of complementary half portions,-a cover mounted over one end of the casing, being fitted over said half portions to aid in holding them closed, a sleeve fitted upon said half portions at the other end of the casing, also aiding in holding said half portions closed, means I providing a bearing crosswise of the axis of the casing, a glass prism axially and revolubly supported across the open end of the casing, means contained by the casing directing a light beam onto the lens for'projection through the prism and away from the casing as spectrum rays, and
advertising indicia ituated between the source of light and the lens.
4. Apparatus of the character described comprising a longitudinally divided openable and closable frame or casing formed of complemental sections, removable supports at the ends of the casing engaging the sections to assist in holding them closed, illuminating and reflecting means carried by one of said supports, a glass prism axially and revolubly supported on the casing by the other support, alens in the casing between i the illuminating and reflecting means and the prism, and advertising indicia in the casing between the lens and the illuminating and reflecting means.-
'5. Apparatus of the character described, comprising an openable and closable casing consisting of complementary sections, a cover mounted at one end of the casing and oversaid casing sections to aid in holding them closed, a sleeve fitted upon said casing sections at the other end of the casing, also aiding in holding said sections closed, means providing a bearing crosswise of the axis of the casing, a glass prism axially and revolubly supported thereby across the open end of the casing, means contained by the casing directing alight beam onto the lens for projection through the prism and away from the casing as spectrum rays, and advertising indicia situated between the sources of light and the lens.