US449719A - Eleoteio search light - Google Patents

Description

(NC Model.)

2 Sheets-Sheet 1. B. B. WARD.

ELECTRIC SEAECE LICHT.

Patented Apr. 7, 1891.

ATTEST: NMEA/TDH.'

(No Model.) 2 Sheets-Sheet 2. B. B. WARD ELECTRIC SEARCH LIGHT.

PatentedApr. '7, 1891.

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UNITED STATES PATENT OFFICE.

BARTON B. lVARD, OF NEV YORK, N. Y.

ELECTRIC SEARCH-LIGHT.

SPECIFICATION forming part of Letters Patent No. 449,719, dated April '7, 1891. Application led August 2l, 1890. Serial No. 362.60 (No model.)

To all whom it 11i/ty concern.-

Beit known that I, BARTON B. XVARD, a citizen of the Dominion of Canada, and a resident of New York, in the county of New York and State of New York, have invented a certain new and useful Electric Search-Light, of which the following is a specification.

My invention relates to apparatus commonly known as electric search-lights,7 and more particularly to means for rotating or moving the lamp and reflector together to permit the beam of light to be projected in any desired direction in a vertical or horizontal plane.

My invention consists in the special combinations of mechanism hereinafter described,

whereby the desired vertical or horizontal used to turn the light in either a vertical or a horizontal plane at pleasure, as hereinafter more particularly described and claimed.

In the accompanyingdrawings, Figure 1 is a vertical central section of an apparatus ernbodying my invention. Fig. 2 is a front elevation, a part being shown in section. Fig. 3

is a cross-section through a part of the Supporting-frame. Fig. 4 is a side elevation of a part of the mechanism for impartingmovement to the lamp and reiiector in a vertical plane from the vertical rotary shaft.

A is a U-shaped frame or support for the lamp and'1eiiector,which latter are mounted so as to be capable of turning in a vertical plane in said frame A to permit the beam of light to be projected at any desirable vert-ical angle to the horizon.

B is a standard or support on which frame A is properly mounted, so as to be capable of turning in a horizontal plane.

The lamp and reflector may be mounted together in the casing C and the latter be provided with suitable pivots or bearings, as indicated at I), whereby it may turn in a vertical plane in A; or the pivots may be attached to any other frame or support comino to the lamp and reflector.

D is any reflector, E E the carbons ot' any focusing-lamp, and F the casing containing the lamp mechanism.

Attached to the frame A and extending down through the standard or support B and through the lioor or base G is a stem or shaft I-I, which maybe rotated by means of awheel H2 or other device for the purpose of turning the frame supporting the lamp and refiector in a horizontal plane. By this means the lamp and reector may be located on the top of a pilot or wheel house and the direction of the beam of light controlled by the pilot at his station beneath.

For the purpose of turning the lamp and reflector in a vertical plane a rock-shaft or spindle I is provided,which runs down through the shaft H, and at its lower end has a 11andle-arm l2, while at its upper end it is provided with a gear that gears with a wheel upon the horizontal shaft L mounted in bearings L2 on the frame A. The wheel M is secured to the shaft L, and a wheel N is fastened to the pivot or shaftb, carrying the lamp and refiector. The belt O connects the wheels M N.

Electrical connection with the lamp is made by sliding contacts, preferably in the form of rings, carried, respectively, by the frame B and t-he standard or support A and. resting upon one another. Preferably these rings constitute the bearings upon which the frame is supported and turned. Such contacts are indicated at c c2 and d d2. The rings c c2, of copper, brass, or other good conductor, are let into or supported upon a block of insulating material carried on top of standard B, and are connected by insulated wires or conductors running through said standard or by other means with the opposite poles of the circuit supplied from a dynamo-electric machine or other source of electric current. t The rings d d2 are fixed in a block of insulating material at the bottom of the standard A and rest, respectively, on the rings c c2. Vire connections run from rings d d2 along the inner side of the frame A to the case C at or near the pivots and lead through the case or its pivots to the lamp within.

By means of a catch l? and connected to press-lever K, supported on I2, the arm l2may be locked or unlocked from wheel H2 at pleas- IOO ure. XVhen locked, rotation of the arm will simply turn the two shafts together and rotate the lamp and reflector in' a horizontal plane. Then the two shafts are disengaged from one another by pressing on K, the rotation of the arm will turn the shaft I alone and the lamp and ref-lector will be turned in a vertical plane. Any other desired means might bo used for connecting and disconnecting the two shafts at pleasure. It will be seen that by Vmeans of wheel H2, with notches around its entire circumference adapted to be engaged by the catch P, the operator is enabled to give the beam of light any desired vertical inclination by turning shaft I, and then lock the two shafts together and rotate the lamp in a horizontal plane a whole circle, if desired, preserving the same vertical angle; or he may disengage the two shafts at any time, change the vertical angle, and then lock them together-and continue the horizontal rotation of the beam of light.

lVhile I have shown a special construction of device for locking the two shafts together, I do not limit myself thereto, as other means will occur to mechanics as suitable for locking the two together when desired.

In a prior application filed by me January 13, 1890, Serial No. 336,791, I have shown an organiza-tion similar to that herein shown and described, but in which the devices passing down through the hollow shaft Il for the purpose of tilting the lamp and reflector consist of cords passing over pulleys. The general construction and organization therefore has been broadly claimed in the prior application referred to, and in my present application I confine myself to the special construction of the devices which extend through said shaft and connect to the' vertically-tilting frame carrying the lamp and reflector.

That I claim as my invention is-' l. The combination, substantially as described, with the lamp and reflector and the supporting-frame therefor, of the two vertical operating-shafts, one within the other, a handle secured to one of them, means for locking and unlocking the one shaft from the other at pleasure, and an intermediate gearbetween one shaft and thelam p and reflector for causing the latter to tilt in a vertical plane when said shaft is rotated.

2. The combination, substantially as described, of the lamp and reflector pivoted on a rotatable supporting-frame, a vertical shaft I, a horizontal shaft L, gearing with shaft I, a wheel M on the outer end of the shaft L, a wheel N upon the pivot or spindle carrying the lamp and reflector, and a connectingbelt between said wheels M N, as and for the purpose described.

3. The combination, substantially as described, of the concentric shafts II I, a rotatable U-shaped frame carrying the lamp and reflector and secured to the vertical stem or shaft H, a shaft I, concentric with shaft I-I, a horizontal shaft L, mounted on the rotatable frame and gearing with shaft I, wheels M N, secured, respectively, to the shaft L and to the horizontal spindle or pivot for the lamp and reflector, and a belt connecting said wheels, as and for the purpose4 described.

et. In a search-light, the combination, substantially as described, of a rotatable U- shaped frame mounted on a standard or support and rotatable in a horizontal plane, a lamp and reflector pivoted to turn in a vertical plane in said U-shaped frame, a depending vertical stem II, attached to the horizontal rotatable frame and carrying an operating-wheel H2 below the standard, an internal shaft I, connected at its upper end with mechanism for rotating the lamp and reflector in a horizontal plane, and a horizontal arm I2, connected to the shaft I at its lower end and carrying an operating-handle, as and for the purpose described.

5. The combination, substantially as described, in a search-light, of stem I-I, connected to the horizontally-rotatable frame, shaft I, carrying' the operating-handle and connected by suitable intermediate mechanism with the vertically-rotatable lamp and reflector, an operating-handle secured to shaft I, and a lock or catch for connecting theshaft I with the stem II at pleasure, as and for the purpose described.

G. The combination, in a search-light, of a rotatable frame rotatable in a horizontal plane, a lamp and reflector pivoted tb turn in a vertical plane in said frame, concentric operating-shafts Il I, one attached to the frame directly an'd the other to the lamp and re- [lector through a suitable intermediate gearing, an operating-handle or arm attached to one of the shafts, and a wheel Il2 and catch for locking the shafts together at any desired point in the rotation of the arm, as and for purpose described.

7. The combination, in an electric searchlight, of a rotatable support for thelamp and reflector rotatable in a horizontal frame, an operating arm or handle connected to the mechanism for changing the vertical angle of the beam of light, and means for connecting said arm or the parts attached thereto with IOO the horizontally-rotatable support at pleasure, as and for the purpose described.

Signed at New York, in the county of New York and State of New York, this 20th day of August, A. D. 1890.

BARTON B. XVARD.

lVitnesses:

XVM. Il. CAPEL, HUGO KOELKER.

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