US2703838A

US2703838A - Lamp guard and reflector

Info

Publication number: US2703838A
Application number: US138490A
Authority: US
Inventors: Jr Daniel Woodhead
Original assignee: Daniel Woodhead Co
Current assignee: Daniel Woodhead Co
Priority date: 1950-01-13
Filing date: 1950-01-13
Publication date: 1955-03-08
Anticipated expiration: 1972-03-08

Description

M r h 1955 D. WOODHEAD, JR I LAMP GUARD AND REFLECTOR 2 Sheets-Sheet 1 Filed Jan. 13. 1950 D. WOQDHEAD, JR

LAMP GUARD AND REFLECTOR March 8, 1955- 2 Sheets-Sheet 2 Filed Jan. 13, 1950 /2 (/6/2? Ja/zie/ Z/goa u United States Patent 2,703,838 LAMP GUARD AND REFLECTOR Daniel Woodhead, .lr., Winnetlra, lll., assiguor to Daniel misread Company, Chicago, 111., a corporation of ois 3 Application January 13, 1950, Serial No. 138,490

1 Claim. (Cl. 240-54) This invention relates to reflectors of the type which are attached or connected to the conventional lamp guard which is used in connection with the usual type of handle to which a lamp guard may be attached.

The primary object of the present invention resides in the provision of a new and improved reflector for lamp guards, whereby a greater reflecting surface is obtained longitudinally ;of the lamp which is housed within the guard and whereby light from the lamp is prevented from shining through the guard between the lower end of the reflector and the upper end of the handle carrying the lamp guard.

Another important object of the invention resides in the provision of a lamp guard reflector which has a turned-in lower surface or flange which engages, or bites into, the flexible handle so as to prevent light from shining through, thereby directing the light in a predetermined direction.

A further object is the provision of an in-turned flange on the lamp guard reflector, the flange engaging or biting into the rubber handle to give the reflector length by extending it from the top of the guard to the bottom thereof; also shuttingq'ofi the space normally present in conventional guards,;.;'whereby the full light is directed toward the point selected and the escape of light normally occurriing below the reflector and above the handle is eliminate Numerous other objects and advantages will be apparent throughout the progress of the specification which follows.

The accompanying drawings illustrate a selected embodiment of the invention, and the views therein are as follows:

Fig. l is an elevational view of a lamp guard and handle with the reflector of the invention applied thereto;

2 is a vertical sectional view on the line 2-2 of 1g.

Fig. 3 is atop plan view;

Fig. 4 is a detail transverse sectional view on the line 4-4 of Fig. l; 1

Fig. 5 is a detail transverse sectional view on the line 5-5 of Fig. 1;

Fig. 6 is a detail sectional view on the line 6-6 of Fig. 4; and

Fig. 7 is a perspective view of the improved reflector of the invention. 3

The particular construction herein shown for the purpose of illustrating the invention comprises a handle member 1 which is made of resilient insulating material, such as rubber or rubber-like material, and includes a handle portion 2 which tapers upwardly into a thickened or enlarged upper end 3. The upper end 3 of the member 1 is provided with a socket receiving recess or chamber 4 in which there is arranged an electrical connector 5 in the form of a screw-threaded socket. The handle part 2 has an elongated bore 6 which has communication with the socket chamber 4, the bore 6 carrying electric conductors which may be sheathed in a cable 7. The conductors in the sheath or cable 7 are electrically connected to the socket member 5, and an electric light lamp 8 is screw-threaded into the screw-threaded socket 5. The upper end 3 of the member 1 may also be provided with an annular groove or recess 9 immediately below the upper end of the enlarged end 3.

The handle member 1 carries a cage or lamp guard 10, comprising a suspension disc D provided with a hook W and formed with a peripherally spaced series of openings Patented Mar. 8, 1955 in its marginal edge, and a plurality of vertically arranged, circularly spaced apart wires 11, formed at their upper ends with hooks 11 secured in and through said spaced openings of the disc D, spaced horizontal encircling wires 12 being secured on said wires 11 to hold the same in circularly spaced, cage forming relation beneath the suspension disc. A split collar 13, receivable in the annular groove 9, may be secured to the lower ends of the wires 12, which are preferably offset inwardly, as at J, immediately above the collar 13, to form an upwardly and inwardly facing seat in each of said wires 12. The twopart split collar 13 is preferably provided with locking screw means for clamping the collar 13, and consequently the lower end portions of the lamp guard upon the handle member 1.

Lamp guards of the type just described are usually provided with a reflector arranged inside the cage or guard, but these conventional reflectors are relatively short and terminate a distance above the upper end of the handle 1, rendering the device impracticable in that light escapes between the upper end of the handle and the lower end of the reflector. Th reflector 15 of the present invention, Fig. 7, overcomes the inherent disadvantages of the conventional type of reflector by being elongated vertically and extending below the upper end of the handle member and preventing the escape of light.

The reflector 15 is curved transversely so as to surround the lamp 8 partially about its circumference, and to conform with the interior configuration of the lamp guard 10. The reflector 15 is also curved longitudinally, particularly at the upper end, to shield the lamp 8 and render full and adequate reflection of the light from the lamp 8. At its upper end, the reflector is formed with a curved edge E adapted to removably interfit within the attaching hooks 11 and configurated to snugly engage and interfit with the peripheral edge of the disc D. The lower end of the reflector is provided with an inturued flange 16, which projects below the top of the handle 1 to form an edge C adapted to bite into, or impinge tightly against the resilient material of the handle member, preferably immediately above the annular recess 9. This reflector 15, at the bottom thereof, extends below the top of the handle, and may supportingly engage the seats formed by the inturued portions J of the wires 11. Inasmuch as the inturued flange 16 is at the bottom of the reflector 15, and bites into the soft rubber of the handle, there is no possibility of any light escaping or shining through the lower end of the lamp to blind or hamper the user of the device.

The reflector 15, therefore, provides proper protection to the user by preventing light from shining directly into his eyes and causing the light to be properly directed toward an object or article.

The device of the invention comprises a portable lighting fixture or device which-embodies a relatively simple feature and has certain useful advantages and characteristics not employed in portable lamps of the lamp-guard-handle arrangement heretofore used. The device also has the advantage of being made extremely economically in that no additional cost is required in its manufacture and application.

Changes may be made in the form, construction and arrangement of the parts without departing from the spirit of the invention or sacrificing any of its attendant advantages, and the right is hereby reserved to make all such changes as fall fairly within the scope of the claim which follows. 1

The invention is hereby claimed as follows:

A lamp guard comprising a suspension disc formed with a series of spaced marginal openings, a plurality of wires having hooked ends secured in said openings, said wires radiating from said disc and being curved to form an open ended cage beneath said disc, the disc remote end portions of said wires being offset inwardly to provide shoulders on said wires and terminal portions disposed in substantially parallel circularly spaced relation, curved clamping strip means secured on said terminal portions of the wires to maintain the same in spaced apart relationship and to clampingly secured the guard on a lamp holder, and a reflector comprising a formed sheet metal plate mounted within said cage on said wires, said plate having an abutment edge, at the upper end thereof and formed to engage and abut the peripheral edge of said disc whereby to secure said end of the reflector within the hooked ends of said wires, said plate having an inturned flange, at the lower edge thereof, in position to seat upon said shoulders adjacent said terminal portions of the wires and adapted to bitingly press its edge into a circurnferential portion of the socket end of a lamp holder on which the guard is secured, to thus retain the reflector in place within the guard.

References Cited in the file of this patent UNITED STATES PATENTS 011ey Nov. 12, 1929 4 v n l Kollath Sept. 30, 1930 Colosotf Nov. 22, 1932 McGill Apr. 3, 1934 Hockley Nov. 7, 1939 Woodhead Dec. 9, 1941 Fike May 29, 1951 FOREIGN PATENTS Great Britain May 23, 1940