US1303656A - granat - Google Patents

Description

E. GHANAT.

SEARCH LIGHT APPARATUS. APPLICATION msn Dic. 22. 1911.

Pelltd May 13, 1919.

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SEARCH LIGHT APPARATUS. APPLIcATmN'HLEn mac. 22. 1911.

Patented May13,1919.

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ELIE GRANAT, 0F PARIS, FRANCE, ASSIGNOROF ONE-HALF 'I'O BENARD BARBIER & TURENNE, OF PARIS, FRANCE, A FIRM.

SEARCH*LIG-I:IT APPARATUS.

Specification of Letters Patent.

Patented May 13, 1919.

Application filed December 22 1917. Serial N o. 208,482.

To all whom 'it may concern:

Be it known that I, Enne GRANAT, a c1t1- zen of Russia, residing at Paris, France, have invented Improvements in Search- Light Apparatus, of which the following 1s a specification.

This invention has reference. to search light apparatus and has for its object to provide improved mechanism for effecting the horizontal and vertical movements of the luminous rays in order to direct them in horlzontal and vertical searching and pointing operations.

The improved mechanism 1s so constructed and arranged that operation of the mechanism to effect adjustment of the luminous rays in a horizontal plane does not cause any alteration in the vertical adjustment lof the.V

luminous rays.

For this purpose according to the invention an irreversible unit of the mechanism` for vertically adjusting the luminous rays is arranged upon the movable part of the apparatus in such a way that the adjustment of the luminous rays in a horizontal plane has no other effect upon the mechanism for` adjustment of the rays vertically than to cause the controlling hand wheelof thev vertical adjusting mechanism to rotate without however the axis of the luminous rays being displaced in altitude.v

The accompanying drawings show a oonstruction of search lightapparatus embodying the invention merely' by way of demonstrative but not restrictive example.

Figures 1 and la, read together, illustrate the apparatus in vertical section following planes passing, as to the left half of the figure, through the axis of the hand wheel controlling the vertical adjustment of the rays and, as to the right half, through the axis of the clutch mechanism for throwing the mechanism controlling the horizontal adjustment out of gear, parts of the apparatus being removed or broken away for the sake of clearness.

Fig. 2 is a sectional plan ofl part of the mechanism for controlling the horizontal adjustment of the rays.

Figs. 3 and 4f showin vertical section oo rresponding to the line 3 3 of Fig. 4 and in horizontal section according to the line 4 4: of Fig. 3 respectively parts of the mechanism for controlling the vertical adjustment of the ra s.

li, Fig. 1a shows the base or mounting of the apparatus in which in the usual manner, there is arranged to rotate about a vertical central aXis, a sleeve Z) to which is rigidly liXed an upper movable plate o that carries the bracket or bifurcated stirrup al in the arms of which the projector e can turn about a horizontal axis, on two pivots of which only one is shown at el. Only a small part of the projector c is shown.

Direction of the luminous rays in a hori zontal plane is controlled through gearing comprising an irreversible transmission gear unit, by means of a hand wheel f, Fig. 2. The said gearing comprises toothed pinions f1 f2, engaging one into the other, a worm f3, Fig. la, keyed upon the shaft of the pinion f2 and engaging with a worm wheel 7* Xed upon a vertical shaft f5, and a toothed pinion f6 gearing into a ring of teeth c1 ixed tothe movable plate c.

A cone clutch g is mounted on the shaft f5 and adapted to be actuated from the eX- terior by means of a bell crank lever g1 which is rocked by a screw g2 that is rotated in a part forming a fixed screw nut by means of ahand wheel g3. The worm wheel f* can consequently be disconnected at will from the shaft f5 in order that large and rapid displacements of an angular nature can lbe given to theluminous rays for the preliminary search for the direction of an object, the final or exact delinement or pointing being effected by operating the hand wheel f after having rengaged the worm wheel f4 with the shaft f5.

Controlling the height of the luminous rays is effected by means of gearing comprising an irreversible transmission unit, certain elements of such gearing being on the stationary part of the apparatus, and the others being mounted upon that part of the apparatus which carries the projector and is movable in a horizontal plane. This gearving is arranged in the following manner unit comprising a worm and worm wheel inclosed within a casing j mounted on the movable plate 0, (see Figs. 1, 8 and 4) Upon the shaft carrying the bevel wheel is keyed a worm 1, Fig. 3, gearing into a worm wheel 2 fixed upon a shaft on which is also keyed a lbevel wheel 3. The bevel wheel 3 gears into a bevel wheel 4 the shaft of which transmits through shafts 5, 6 and Cardan joints 7, 8 movement to a bevel pinion 9 that gears into a toothed bevel sector e2 lixed upon the pivot el of the cylinder projector e of the search light (see Fig. 1) The jointed shafts 5 or 6 are located within the bracket or bifurcated stirrup cl and consequently protected against dust and rain.

A cone clutch 7c similar to the disconnecting gear g of the mechanism for controlling the horizontal pointing of the searchlight and adapted to be manipulated from the outside by means of a hand wheel k1, enables the bevel pinion 9 to be disengaged at will from the shaft 6, for the preliminary searching-movements of the rays.

The hereinbefore described arrangement of the height controlling mechanism alfords the great advantage of preventing the altitude of the rays from being interfered with when the apparatus is being moved for horizontal adjustment or searching. As a matter of fact as the irreversible unit worm 1 and worm wheel 2 is arranged on the movable plate c of the apparatus, the bevel wheel when the horizontal adjustment control mechanism is in use, carries around the bevel wheel 71,6 and, through the parts h6, h5, h, 72.3, 71,2, h1 of the.transmission gearing, rotates the controlling hand wheel z, of the vertical adjustment control mechanism. In horizontal movements therefore, the hand wheel h rotates without however the axis of the Aluminous rays undergoing any displacement as regards altitude.

The control handwheels f and 71, each are, or may be, fitted with a sprocket rim to permit of a chain drive operated from. the ground if desired for elfectin the adjusting movements both for direction and height. The chains may, moreover have special links. arranged at distances apart corresponding to one turn of the hand wheels so that the-amount of movement may be easily distinguished by touch at night time.y I

It will be readily-understood that the invention is not strictly limited to the exact arrangements hereinbefore described and shown in the accompanying drawings, but that the structuraldetails may be variously modiiied; in practice according to circumstances.

What I claim iszl. In searchlight apparatus, a stationary part, an angularly movable portion, mechanism for moving said movable pai't to move the luminous rays about horizontal planes, and mechanism for moving the luminous rays vertically comprising an irreversible unit arranged upon the movable port-ion of the apparatus and a shaft for actuating said unit, said shaft being mounted to rotate in the stationary part of the apparatus about an axis coincident with the axis of said movable portion, so that horizontal adjustment does not aifect the altitude of the luminous rays.

'2. In searchlight apparatus, a stationary mounting, a projector, or carrier in which said projector is mounted to rock vertically, said carrier being mounted to rotate in a horizontal plane on said mounting, a centrally arranged shaft arranged to rotate in said mounting, means carried by said mounting adapted to rotate said shaft. a bevel wheel on the upper end of said shaft, a bevel pinion gearing into said bevel wheel and carried in bearings fixed to said carrier, transmission gear mounted on said carrier including an irreversible unit connecting said bevel pinion to said projector and adapted to rock said projector, and means for rotating said carrier on said mounting.

3. lSearchlight apparatus, comprising a iixed mounting, a carrier mounted to rotate in a horizontal plane on saidmounting, a projector mounted to rock in said carrier, gearing carried by said mounting for rotating said carrier, gearing partly arranged in said mounting and partly arranged in said carrier for rocking said projector, said last named gearing includingy an irreversible unit, and independent means on said mount.- ing for operating each of saidgearings.

4. Search light apparatus as claimed in claim ly comprising a clutch`v associated with each of said mechanisms, and operating means for said clutches.

5. In search light apparatus, a fixed mounting, a vertical sleeve mounted to rotate in said mounting, a plate xed to the to of said sleeve, a stirrup shaped bracket Xed on said plate, a projector pivoted in the arms of said bracket, a vertical shaft mountedito rotate in said sleeve, a bevel wheel fixed to the lower end of said shaft, means on said mounting for rotating said vertical shaft, means on said mounting for rotating said plate and carrier, a bevel wheel at the top of said vertical shaft, and gearing mounted in said bracket including an irreversible unit between the said bevel wheel at the top of said shaft and said projector, substantially as described.

Signed at Pars, France, this 23d day of November, 1917.

ELIE GRANAT.

Copeaothlis patent may be kobtained for ve cents each, by. addressing the "Commissioner of Patents,

` Washington, D. 0.

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