US2419339A

US2419339A - Transparent picture viewer

Info

Publication number: US2419339A
Application number: US578979A
Authority: US
Inventors: Robert N Dennis
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-02-21
Filing date: 1945-02-21
Publication date: 1947-04-22
Anticipated expiration: 1964-04-22

Description

April 22, 1947. R. N. DENNIS TRANSPARENT PICTURE VIEWER Filed Feb, 21, 1945 "mm 20 Wm flit j INVENTOR.

Patented Apr. 22, 1947 Robert N. Dennis, Pelham Manor, N. Y. Application February 21, 1945, Serial No. 578,979

2 Claims.

My invention relates to a transparent picture viewer and its novelty consists in the combination,

adaptation and arrangement of parts as will be more fully hereinafter pointed out.

There have been many attempts to provide a suitable viewer for transparent slides but they are all too cumbersome and complicated and none of them have been able to meet the exacting requirements that are for the first time met by my viewer in showing the fine detail and colorings of Kodachrome or other fine films.

My structure is a simple, complete unitary structure containing not only its own lighting means but also opening so as to form its own shadow box, at the same time furnishing adjustable lenses. .And it will show up the transparent picture more clearly and in finer detail and more efficiently for differing eye requirements and with better diffused light and without shadows or false light than any of the more complicated devices previously known.

Referring to the drawings,

Figure 1 is a perspective of my complete device with the cover shut;

Fig. 2 is the same as 1 with the cover open and two portions broken away to show hidden construction;

Fig. 3 is a cross section of the lens elements.

In the drawings, 4 is a base of wood, plastic or any other suitable material on which housing 5 is rigidly mounted and which has a sloping upper edge l3 which is lower'at its front 6. In the housing 5 an electric light bulb l is mounted being connected by a suitable flexible connecting cord 8 to a plug 9 which is adapted to plug into any ordinary house electrical outlet as a source of power. A translucent plate I is adapted to rest on the top of housing so as to be held therein in protected position and properly diffuse the light from below. I

An open ended cover H is hingedly mounted at I2, on the rear edg of the housing 6 so as to cover the same in the closed position and open up to an operating position in th open position and having a front door 25 hinged to the base 4 and a handle 26. A pair of support elements M are pivotally mounted at [5 to the inside edge of the cover II and are adapted to rest on 4 at their lower ends and support H in the open position as shown in Fig. 2.

A slidable frame l6 having extensions I! in each side is mounted in cover ll so that said extensions I! travel on guide stops l8 rigidly secured inside each side of II and said guides I8 serve as slide elements on which extensions l1 travel and as stops for limiting the downward movement of slidable frame IS. A pair of lenses l9 having their thickened edges 20 at the inner ends are identical and are rigidly mounted, in said frame It at 2|. Said frame l6 also has cut-out

portions

22 and 23 so that the head and face of the person using said device can fit therein.

On using my device the front door 25 will be pulled down by handle 26 and cover II will then be raised and the free pivoted support elements M will drop into position to rest on base 4 and support the cover M in the open position, as shown in Fig. 2. Plug 9 will then be pushed into a suitable electric outlet so that electric light bulb '1 will thereby be lit. The Kodachrome or just the position of the frame 16 and lenses l9 so as to get the proper focus for best seeing the picture 24 which is illuminated from belowby the. electric light bulb 1 the light being nicely diffused through the translucent plate l0 and the shadows and false light being shut out by the cover I l. A series of pictures 24 can be placed on plate Ill, one at a time, and the focus of the lenses [9 adjusted each time by adjusting frame 16 manually so that a perfect viewing can be had of any transparent picture or series of same.

It will be apparent that many variations may be made in the particular form of my device without departing from the spirit and intent of the same and that the claims cover such variations.

5 What I claim is:

1. In a transparent picture viewer, the combination of a base member, an open top housing rigidly secured thereto, lighting means with power connection mounted in said housing, .a front 40 pitched translucent plat fitting over said housing, an open ended cover hinged to the back of said housing, a pair of supports pivoted within said cover on either side to hold said cover in its open position, an adjustable frame element carrying a pair of lenses slidably mounted in said cover and a front door for the front open end of said cover hingedly mounted on its bottom edge at the front of the said base member.

2. In a transparent picture viewer, a unitary structure comprising a base, an upward diffusing light container integral therewith, a lighting means therein, an open ended cover hingedly mounted at its back lower edge to said container, a slidably adjustable means carrying lenses mounted in said cover, means for supporting said 3 4 cover in an open position and a front door for said open end cover having a handle and said UNITED STATES PATENTS door being hinged at its bottom edge to said base. Numb r Name Date 580,024 Whiting Apr. 6, 1897 ROBERT N. DENNIS. 5 2,279,904 M sm n Apr. 1 1942 2,349,013 Sparling May 16, 1944 REFERENCES CITED OTHER REFERENCES The following references arerof'rrecorclzin'rthe: B... 8:: L. Slide Viewer (Pub.) International file of this patent: Photographer, August,1938, pages liand 5.