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Publication numberUS1743535 A
Publication typeGrant
Publication dateJan 14, 1930
Filing dateNov 22, 1928
Priority dateNov 22, 1928
Publication numberUS 1743535 A, US 1743535A, US-A-1743535, US1743535 A, US1743535A
InventorsMorton H Edmondson
Original AssigneeMorton H Edmondson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Work-illuminating device
US 1743535 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Jan. I4, 1930. M. H. EDMoNDsoN WORK ILLUMINATING DEVICE Filed Nov. 22, 1928 2 Sheets-Sheet 1 ATTORNEY 1930. M. H. EDMONDSON v WORK ILLUMINATING' DEVICE Filed Nov. 22, 1928 2 Sheets-Sheet Jan. 14,

lllllllllllllllllllllllllllll\|\l\ll nl INVENToR /l/Xf/vo/rasof/ BY i Sg ATroRNEY Patented Jan. 14, 193()` UNITED STATES MORTON H. EDMONDSON, OF GREENVILLE, TEXAS WORK-ILLUMINATING :DEVICE Application filed November 22, 1928.

This invention relates to'new and useful iinprovements in work illuminating devices.

One object of the invention is to provide an illuminating device arranged to be so mounted on rotating excavators, cranes and the like, as to remain stationary whilethe machine is rotating and thus maintain constant illumination on the work.

A further object of the invention is to provide a stationary light forlrotating machines which may be adjusted vertically.

A particular object of the invention is to provide a lamp support mounted in a rotatable body and connected with a compensating gearingso as to hold said support and its lamp to a given position and thus direct the light rays upon a fixed location irrespective of the rotation of the body. A construction designed to carry: out' the invention will be hereinafter described, together with other features of the invention.

The invention will be more readily understood from a reading of thefollowing speciiication and by reference to the accompanying drawings, in which an example of the invention is shown, and wherein:

Fig. 1 is a view of an excavating machine, partly in elevation and partly in f section, equipped with an illuminating device constructed in accordance with the invention,

Fig. 2 is an enlarged cross-sectional view taken on the line 2 2 of Fig. 1 and looking in the direction of the arrows,


3 is a detail of the adjustable lampV Serial No. 321,125.

Fig. 8 is a horizontal cross-sectional view taken on the line 8 8 of Fig. 7, and

Fig. 9 is a detail ofthe clutch.

In the drawings the numeral 10 designates the truck and 11 the cab of an excavating ma 50 chine, crane or similar machine to which the invention is adapted. The truck has a turntable 13 and the cab is connected thereto by a central pivot post 14.

In the floor of the cab is mounted a Hoor iiange 15 and an upright tubular shaft or post 16 is journaled in the flange.- The post eX- tendg through a flanged bearing 17 in the roof of the cab. An extension tube 18 telescopes into the upper end of the post and is fastened by a setJ screw 19, thus making' for vertical adjustment. The post and tube constitute a mast.

A clamp 2O is adj ustably mounted on the upper end of the vtube so as to be rotated j around the tube or moved vertically thereon and fastened in position.` A lamp socket 21 is pivoted to the clamp so as to be swung in a vertical arc and fastened to direct the light rays on the desired location. A reflector shade 22 is mountedr on the socket.

The post 16 may be made in one piece or it may be split and connected by a clutch as is shown in Figs. 5 and 9. The lower section of the split post is fastened inthe bottom ofa flanged socket 23 which receives a clutch sleeve -24 surrounding the lower end ofthe upper post section. v j

The sleeve has a key-way 26 receiving a key 25 on the upper post section. The socket and sleeve are flanged.` the latter having teeth 27 engaging in sumps 28in the former, whereby rotation is contributed from the lower post'section through its socket which in turn rotates the upper post section vthrough the agency of the keyed sleeve. Y

For supplying electrical current to the lamp of the socket 22, a cable 29 extends through the tube 18 Vand at a point below saidtube is connected to insulated commutator rings 30 on the post having suitable electric Circuit connections 31 which permit rotation of the post. The post 16 is located eccentrically of the pivot 14 of the cab and truck. YIt is desirable to have the post remain relatively stationary when the .cab is rotated soi as to keep the rays of light directed 011 a fixed location. p There are several ways of accomplishing this result, some of which will be described herein. f

In Figs. 1 and 2 the post'16 is extended below the floor of the cab l1 and has a pulley 32 fastened thereon. A beltV 33 passing Y around this pulley Valso passes'around a pulley 34 fastened to the pivot post 14 which is stationary in the truck 16, thus when the cab 11 is rotated the belt will cause the post 16 to retain its relative positionV with reference to the stationary truck, whereby the lamp will remain stationary. Y

In Fig. 4 a similar result is obtained by Yfastening a gearr35 `on the lower end of the post 16. This gear meshes with a pinion 36 suitably journaled to the floor of the cab and in turn meshing with a gear 37V fastened to the stationary pivot post 14. When the cab is swung in the direction of the arrow (Fig. 4)

the gear 35 and pinion 36 will be' swung in the directions of the arrows owing to the connection with the fixed gear 37. The term gearing is used herein to designate gears,

Y pinions, -belts and chains and sprockets.

In Figs. 5 and Gthe turn table 13 is provided the same as in Figs. 1 and 2. A shaft 4() mounted in a bracket 38 on the side of the cab is driven by a beveled gear 39 from a beveled pinion 39 suitably driven from the cab andthe latter thus rotated.V A counter shaft 41 is mounted in a bracket 42 on'the side of the cab and has a pulley 43 fastened thereon. This pulley 43 is driven by a belt 44 from a pulley 45 on the shaft 40. A second pulley 46 onthe shaft 41 drives a belt 47 which in turn drives a pulley 48 fastened on the lower end of the post 16. The arrows indicate the directions ofI rotation of ythe elements.

Figs. 7 and 8 show ,still another driving arrangement. VThe cab maybe rotated as is Vshown in Figs. 5 and 6 or by any other means 2 50 gages the ringgear and is fastened on a shaft involving a ring gea'rf13..A A pinionV 49 en- 570 journaled inajbracketl secured to one side of the cab at the bottom thereof. 'o v Apulley 52 fastened on the shaft 5() drives a belt 5.3 which in turn drivesfa large pulley .54,joumaled under the floor of the cab. The

pulley 54 is connected With'and rotates a small pulley 55 which in turn drives a belt 56. VThe beltdrives a larger pulley 57 fastened on the l lower end of the post 16. The arrows' in dicate the directions of rotation.' In each train of gearing inthe several figures the rotating elementsare of auchr diameters aste give the Vdesired result in retaining the postin itsA rela- Y tire position. By lifting the sleeve`24v of theA clutch the post 16 may be rotatably adjusted to focus the light on the desired location.

Various changes in the size and shape of Y' `upper end and rotatably mounted on the cab, and means connected with the relatively stationary truck for holding the illuminating member so as to direct the rays of its lighting means on a fixed location while the cab is being rotated. f

2. In a work illuminating device, the combination witha portable truck and a cab rotatably mounted on the truck, of an illuminating member having'lighting means at its upper end and rotatably mounted on the cab,

means connected withk the relativelyV stationary truckfor holding the illuminating memf ber so as 'to direct therays-of its 'lighting means on a fixed location while the Vcab is being rotated, and means for adjusting the illuminating member to direct its light rays on different locations. Y

3. In a work illuminating device, the com-n bination with a portable ltruck and a cab rotatably mountedon thetruck, of an upright post rotatably mounted in the cab, illuminatingfmeans mounted on the upper end 'of the post above the cab, and means connected with the rotatable post for compensating the'rotation of the cabwhereby the illuminating Vmeans is held in a relativelyk fixed position withY relation to the work.

4. Ina work illuminating bination with a portable truck and a cab rotatably mounted on the truck, of an upright device, the com-.

post rotatably mounted in the ca'bgilluminat- .Y ing means mounted on the upper end of the nating means may be directed ondifferent" Y `work locations.

5. In a work illimiinating device, the-com``Y Y i bination with a portable truck and a cab ro-- tatably mounted on the truck,of anupright post rotatably mounted in( thev cab, an extenf sion verticallyadjustable on the upperend of I the post above the cab,ra lamp socket adjustably mounted onr` the' extension, a rotating' element on the lower portion of the post, and adriving connection connected with said rotating element. y j Y 'f j l 6. In a work illuminating device, `the combination with a.portable1truck and a, cab-ro tata'bly mounted on the truck, of an upright post rotatably mounted in the eab, an extension vertically adjustable on the upper end of the post above the cab, a lamp socket adjustably mounted on the extension, a. rotating element on the lower portion of the post, a driving connection Connected with said rotating element, and a clutch connected in the post whereby the upper portion of the post may be rotatably adjusted with relation to the lower portion of the post.

In testimony whereof I afliX my signature.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3934134 *Mar 3, 1975Jan 20, 1976J. I. Case CompanyLamp mounting for a material-handling tractor
US4600980 *Jan 25, 1985Jul 15, 1986Allmand Bros. Inc.Portable light support apparatus
US5012394 *Nov 15, 1988Apr 30, 1991Woodward John GHand portable light with extendable lamp housing
US5203621 *Apr 10, 1992Apr 20, 1993Super Vacuum Manfacturing Co., Inc.Roof-mounted flood light assembly
US5276597 *Jun 11, 1991Jan 4, 1994Peerless Lighting CorporationConfigurable furniture integrated ambient lighting system and method
US5931556 *Jan 4, 1994Aug 3, 1999Nsi Enterprises, Inc.Configurable furniture integrated ambient lighting system and method
US8638209Feb 2, 2010Jan 28, 2014Super Vacuum Manufacturing Company, Inc.Traffic control board mount for vehicles
U.S. Classification362/414, 362/419
International ClassificationF21V33/00
Cooperative ClassificationF21V33/00
European ClassificationF21V33/00