US1717754A - Magnifying and illuminating device - Google Patents

Description

June 18, 1929. C, T, BRADY 1,717,754

MAGNIFYING AND ILLUMINATING DEVICE Filed May 3l, 1927 2 Sheets-Sheet l June 18, 1929. c. T. BRADY MAGNIFYING AND ILLUMINATING DEVICE Filed May 3l, 1927 2 Sheets-SheeI attenua@ Patented June 18, 1929.

UNITED STATES PATENT OFFICE.

MAG-NIEYIN G AND ILLUMINATIN G DEVICE.V

Application mea May 3'1,

The present invention pertains to a novel magnifying and illuminating device constructed particularly for the examination of objects such as parts of the body, documents, finger prints and the like. The principal object of the invention is to provide a device of this character which will illuminate the object under examination and at the same time magnify it to the eye of the observer.

The device comprises essentially a body formed with a lamp socket and a lamp shield having its inner surface treated to function as a reflector. The socket carries a handle by which the device is held, and the shield is formed with a suitable support for a magnifying lens. Thedarrangement of the several parts is such that the device may be adjusted to focus light on the observer and at the saine time bring the reflecting lens in the line of sight from the observers eye to the object.

The invention is fully disclosed by way of example in the following description and in the accompanying drawings, in which Figure 1 is a plan view of the device;

Fig. 2 is a longitudinal section thereof;

Fig. 3 is an end view;

Fig. 4 is a detail section at right angles to Figure 2; and

Figures 5, 6 and 7 are plan views of modificd constructions.

Reference to these Views will now be made by use of like characters which are employed to designate corresponding parts throughout. v

The body of the device lis formed to provide a socket 1 having at one end a handle 2 and at the other end a shield 3.' The body is preferably made of aluminum for lightness, and the inner surface 4 of the shield is preferably of a reflecting nature for cooperation with a lamp 5 fitted into the socket.

A pair of conductors 6 and 7 ineased in a protective tubing 8, are passed axially into the handle until reaching the interior of the socket. rlhe plug 9 of the lamp 5 has one of the conductors fixed to acontact 10 thereon.

The other conductor 7 has a spring contact- 11 fixed to the insulated end 12 of the plug 9 and normally spaced from the second terminal 13 of the plug. A screw 14 threaded through the socket 1 is adapted to move the contact 11 into engagement with the contact 12 and thereby close the circuit through 1927. Serial No. 195,572.

the lamp when required. The lamp is prevented from turning in the socket by means of a set screw 15 threaded through the wall of the socket and engaging the plug 9.

At the forward or free edge of the shield 3 is formed an integral ring 16in which is mounted a magnifying lens 17. 'lhe ring overlaps the upper surface of the lens as shown in Figure 2, and the lower surface of the lens is engaged by screws 18 passed through a depending flange 16 of the ring.

In the use of the device for examination purposes, the circuit to the la'mp is closed and the device is arranged to direct light towards the body under examination. The adjustment is such that the shield 3 will be positioned between the lamp and the observer for the double purpose of reflecting light to the object and preventing light rays from directly entering the eyes of the observer. The device may be tilted tobring the magnifying lens 17 in the line of sight from the observers eye to the objectunder examination so that the object will be magnified as well as illuminated. e

ln the modification shown in Figure 5 the handle 20, socket 21 and shield 22 are `constructed as in Figures 1, 2, 3 and 4. The lens 'frame 23 however is of an oblong shape containing an oblong magnifying glass 24 and having its outer corners cut away as at 25. It will also be seen that the handle lies at an obtuse angle to the longitudinal axis of the lens frame. T his position of parts renders the glass more easily adjustable to the subject matter which is to be illuminated and read. 1

The form shown in Figure 6 has an Octagonal frame 30 for holding a similarly shaped magnifying lens 32. In Figure 7 the frame 32 is'square and contains a square lens 33. In both Figures 6 and 7, the lens frame is symmetrical to the axis of the handle.

Although specific embodiments of the inention has been illustrated and described, it will be understood that various alterations in the details of construction may be made' without ldeparting from the scope of the invention as indicated by the appended claims.

What I claim is 1. A magnifying and illuminating device comprising a lamp socket, a lamp shield and a lens holder all formed of one piece.

2. A magnifying and illuminating device comprising a lmnp socket, a handle and a lamp shield at opposite ends of said socket, and a lens holder carried by Said shilld, Said baonket, handle, shield and holder lining all oi one piece.

3. A magnifying and illuminatingdevice comprising a lamp socket, a handle and a lamp shield at opposite ends of the socket, and a lens holder, said Socket, handle, shield 10 and lens holder being all of one piece. v

ln lestin'iony whereof I ai'lix my signa,-

ture.

CHARLES T. BRADY.

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