US 1373491 A
Description (OCR text may contain errors)
F. J. DETWILER AND M. H. BURKHOLDER.
APPLICATION FILED JULY 25, 19w.
Patented Apr. 5, 1921.
xvi/1 14 coo UNITED STATES PATENT OFFICE.
FRANK J. DETWILER AND MELVIN H. BURKHOLDER, OF IPARKERSBU'BG, WEST VIRGINIA.
l Specification of Letters Patent.
Patented Apr. 5, 1921.
Application filed July- 25, 1919. Serial No. 313,251.
T 0 all whom it may concern:
Be it known that we, FRANK J. 'DETWILER and MELVIN H. BUnKr-roLDnn, citizens of the United States, residing at Parkersburg, in the county of "Wood andState-of West Virginia, have invented a new and useful PicturerProjector, of which the following is a specification.
This invention relates to picture or post card projectors, the object being to provide a picture projector which will project the pictures, prints, writings or objects in a manner to cause the same to appear distinct and clear and in natural position, the print showing in natural order.
A further object of the present invention is to provide a picture projector which is provided with a novel card holder and card holder receiver that is easily reached and quickly operated, and allows objects of various shapes and sizes to be shown.
Still another object of the invention is to provide a projector of this character, which may be readily reached in order to adjust, clean or repair the illuminating lights or other parts of the same. It is a further object of the invention to provide a portable picture" or post card projecting machine which is so constructed as to practically insure'the parts from becoming broken.
An additional object of the invention is to provide a projecting apparatus having the above characteristics, which is simple in construction, which consists of few parts, and which may be manufactured and sold at minimum cost.
With the above and other objects and advantages in mind, the inventionconsists of combinations of elements, arrangements of parts, constructions and operations, and general assemblage which will be hereinafter specifically referred to, the inventive features being explicitly defined in the appended claims, and one embodiment of the invention being illustrated in the accompa nying drawing, wherein a perspective of the projector is shown, the door of the projector being shown in .full lines in open position and in dotted lines in closed position.
Referring to the drawing wherein like characters of reference designate like parts in all of the views, the numeral 5 denotes a rectangular casing which is constructed from any desired material. This casing is provided with a hinged door 6 at one side thereof in which 18 mounted a projecting lens 7 that is adapted to be disposed in front of and cooperate with a reflector plate 8 which is obliquely disposed centrally of the casing 5, the lower transverse edge of the reflector plate 8 resting upon the bottom wall of the casing 5 while its opposite transverse edge is engaged with the rear side wall at its upper edge.
Illuminating means is provided which in this instance consists of pyramidical (or other) light reflectors 9 arranged at each transverse end of the casing 5 and upon opposite sides of the reflector plate 8. Electric or other lamps 10 are mounted in these reflectors 9 and are connected with conductors 11.
The upper wall of the casing 5 is provided with an opening 12 which overlies the reflector plate 8 and is of a size to permit a picture or object to be reflected into the reflector plate 8. An upstanding frame of rectangular formation is mounted upon this upper wall and surrounds the opening 12 and has hinged thereto a cover 14 adapted to be closed when the pictures are being projected. A longitudinal slot or recess 15 is formed in each side of the frame 18 to provide a clearance for the slidable picture support 16 which operates over the opening 12 in the top wall of the casing, the support being provided with handles 17 which project beyond the frame 18 when the card holding frame ,is in operative position over the'opening 12. This card hold- 1 ing frame 16 is inserted into a slidable card holder receiver 18 which slides within the frame 13 and over the opening 12. A removable plate glass 19 is also provided which lies over the opening 12 in the frame 13 and is used to support irregular shaped objects to be projected.
From this disclosure it will be apparent that the pictures or objects disposed over the opening 12 will be reflected onto the refiector plate 8 and thence reflected through the projecting lens or lenses and onto a suitable screen, it being understood that the projector is to be used in a dark room.
The embodiment of the invention herein shown and described is considered the preferred construction, but it will be understood that the same may be modified and altered in many respects and our limits of I modifications are only governed by what is claimed. 1
What is claimed is:
1. In a picture projecting apparatus, a casing, said casing having a central opening formed in the upper surface thereof, a reflector plate positioned Within the easing, the reflector plate being arranged at an angle With relation to the upper surface of the casing, and disposed directly under the central opening, a frame surrounding the central opening, said frame having a recessed portion, a picture supportlng frame adapted to move under the first mentioned frame and through the re-- eess, means for operating the picture supporting frame, and a cover for the first mentioned frame.
2. In a picture projecting apparatus, a casing, said caslng having an openlng in the upper surface thereof and having a hinged closure forming one of the sidewalls mentioned frame, and longitudinally of the upper surface thereof, and said hinged closure having a projecting lens supported thereby, the projecting lens being disposed opposite the reflector plate.
In testimony that We claim the foregoing as our own, We have have hereto afiixed our signatures in the presence of two Witnesses.
FRANK J. DETWILER. M, H. BURKHOLDER.
Witnesses L. K. RIoHARDs, R. HENRY Prcsorr.