US1304560A - Geobge m - Google Patents

Description

G. M. GRAY.

SIGNAL LANTERN.

APPLICATION men MAY29.1915. RENEWED JAN. 3. 1919.

Patented May 27, 1919.

I l l l I l E l 1 l l l I I I UNITED STATES PATENT neuron.

GEORGE M. GRAY, OF MELROSE, MASSACHUSETTS.

SIGNAL-LANTERN.

Specification of Letters Patent.

Application filed May 29, 1916, Serial No. 100,519. Renewed January 3, 1919. Serial No. 269,549.

To all whom it may concern:

Be it known that I, GEORGE M. GRAY, a citizen of the United States, residing in Melrose, county of Middlesex, Commonwealth of Massachusetts, have invented certain new and useful Improvements in Signail-Lanterns, of which the following is a specification, reference being had to the drawings accompanying the same and forming a part thereof.

My invention relates to signal lanterns for railroads, vessels, and the like.

One of the objects of my invention is to provide a powerful signal light, the light beams of which may be visible either day or night for either short or long distances.

A further object of my invention is to provide an electric signal lamp having a reflector of such curvature as to concentrate and project the light rays of a light straight ahead in a comparatively narrow, powerful beam of light, so that it will be visible during the hours of daylight and so that the signal lamp may be used for what is known as daylight signals.

Another object of my invention is to provide adjustable means for mounting an electric light bulb in the signal lamp so that it may be adjusted laterally in any direction and any distance within the limits of adjustment, as well as adjustable longitudinally.

In the drawings forming a part of this specification- Figure 1 is a rear elevation of the lamp;

Fig. 2 is a sectional side elevation through line 22, Fig. 1;

Fig. 3 is. a sectional plan view through line 33 Fig. 2; and

Fig. 4 is a. section through the socketholder for the electric bulb showing an enlarged view of the means for adjusting the bulb laterally and longitudinally.

The drawings illustrating the construction of my device show a metal signal lantern body, and the numeral 1 is the outer body portion of the lamp; 2 is the top or ventilator portion; and 3 is the bottom portion of the lamp. The rear of the lamp is provided with a sliding cover or door t which has the angular return bent portions 4: on it, which slide over angular out-turned portions 1", formed on the body 1 of the lamp at the rear. lamp has a sliding door 5 having angular return bent portions at each side which slide we]: angular out-turned portions of the gular pieces 10, 10, etc.

The front portion of the body. The front slide or door 5 is provided with a rondle-holder 6 in which the rondle glass 7 is secured.

There is mounted inside the lantern body a conical-shaped refiectonholder 8 in which is secured the reflector 9, the reflector being held by any suitable-means, such as the an- T he reflector 9 has a central opening 11 through which the base 12 of an electric bulb 13 may so as to be secured in the socket 14. The socket 14: is provided with the threaded portion 15 having a locking-nut 16 so that the'socket 1st may be adjusted longitudinally in and out of the socket bushing 17. bushing 17 has the hole for the socket 1% located eccentric to its bearing portion 18 in order to provide means for lateral adjustment of the lamp socket 14:. The bushing 17 is revoluble and mounted in a second revoluble bushing 19, which in turn is mounted in the back part 20 of the cone 8.

The bushing 19 has a bearing hole eccentric to its bearing surface 21 so that it will throw the socket 15 and the hole in the bushing 19 laterally, as will be readily understood. The bushings 17 and 19 are provided with shoulders 22 and 23 respectively so as to prevent endwise movement of them in one direction, and they are held in position against endwise movement in the other direction by the plate 24 which is secured to the bushing 19 and bears upon the inside of the rear wall 20 of the cone 8 and a plate 25 which is secured by the screw 26 to the bush ing 17, Which plate 25 bears against the plate 2 1. These two plates 2 1 and 25 secure the bushings 17 and 19 against endwise-'movement but permit of their rotation. The bushings 17 and 19 are secured against accidental rotation by the dogs 27 and 28 which 29 being secured to the portion 20, and the Patented May 2'71, 191%,

This socket screw 30 to the bushing 19. These dogs 2? a and 28 have the angular points 81 and formed so as to enter notches in the peripheries of the members 17 and 19. and when the points 31' and 32 are inengagement with the notches and the screws 29 and '30 tightened, the members 17 and 19 are securely held in their adjusted position.

The bushings 17 and 19 serve to position the socket-holder 15 laterally in any position desired from a position concentric with the bearing 21 of the bushing 19 toth'e limit of throw permissible by the eccentricities 0t can be adjusted to the highest possible point.

the bearing holes in said bushings 17'and 19, the operation being as follows ties of the two would be counteracted, as it were, to prevent lateral movement of the socket and to cause a direct upward movement, or vertical movement, as viewed in Fig.1.

ontinuing these movements, the socket Likewise, if it is desired to adjust the bulb horizontally in either direction from the position shown in Fig. l, the inside bushing 17 would be rotated to the right if it was desired to adjust the socket-holder to the right, or to the left if it was desired to ad just it to the left. When the proper adjustment in any direction is made, then the points of the dogs. 27 and 28 are brought into engagement with the notches on the bushings 17 and 19, and the screws tightened to hold said members in their adjusted position.

If it is desired to adjust thebulb longitudinally in and out with relation to the reflector 9, the binding nut 16 is loosened and screwed outwardly, and thereupon the socket-holderl5 may be rotated until the proper longitudinal adjustment has been obtained, whereupon the binding nut 16 may be tightened to hold the socketin its adjusted position. Y

The signal lamp is shown in the illustrationsas it would be formed to make use of electric light bulb. The socket 15 is of i the usual type and is shown provided with a bayonet form of socket-holder to' take what is known as the bayonet form of socket on an electric bulb. This socket has two little pins projecting slightly from its periphery arranged to slide in the slots 33, 33, and interlock with the lateral portion of the slot 34:. lhe socket is substantially the same on both ends and lS'PI'0VlClBd with con tact members of the usual typeto contact messes with the terminals of the filaments of the lamp at one end and contact with terminals in the plug-.35 at its other end, the plug 35 being provided with connecting wires 36 and 37. i

The form of the socket-holder and plug 35 is of the usual type and I do not claim the same as part of my invention. My invention resides in the construction of the lamp body and reflector and the means for adjusting the bulb laterally as well as longitudinally so as to properly focus the light from the incandescent filament within the reflector in order that the light beams of the filament may be projected in the proper direction and concentrated so as to produce a long, narrow beam of light of such intensity as tobe easily distinguished and visible in the daylight, as well as at night.

What. I claim is 1. In a signal lamp the combination of a lanternbody, anapproximately parabolical curved reflector, an electric light holder, means for adjusting said electric light holder. comprising two eccentric rotatable bushings, one having a bearing within the other, means for rotating and securing the bushings in their-adjusted positions, and means for adjusting the electric light holder axially to focus the light with relation to the reflector.

2. In a lamp or lantern, a body portion, an approximately parabolical curved re- 35 flector mounted within the lantern body, an electric Light holder, means for adjusting said electric light holder sidewise in all directions comprisin two eccentric bushings revolubly mounted in the lantern body, means for rotating said bushings and for securing them in their adjusted positions, and means for adjusting the electric light holder axially omprising a threaded portion and a clamping nut, both for the purpose of focusin the light with relation to the reflector.

ln testimony whereof, I have hereunto set my hand, in the presence of two subscribing witnesses, this the 26 day of May, A. D. 1916.

GEORGE M. GRA Y Witnesses:

R. P. Emo'rr, H. M. Knnso.

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