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Publication numberUS1642545 A
Publication typeGrant
Publication dateSep 13, 1927
Filing dateOct 21, 1924
Priority dateOct 21, 1924
Publication numberUS 1642545 A, US 1642545A, US-A-1642545, US1642545 A, US1642545A
InventorsHarvey Walter J
Original AssigneeHarvey Walter J
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Diurnal reflector
US 1642545 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

APatented sept. 13, 19.27.v

TES

1,642.545 PATENT OFFICE.

WALTER J'.r HARVEY, OFllOIEtON'lO,v ONTARIO, CANADA.

DIURNAL REFLECTOR.

,Application med october-anime serial-N0. 744,998.

' The principal objectof this invention is to devise a reflector which will follow the pathof the suns course and reflect its rays yto a .fixed point. from all positions so as 'to renable the utilizing of the concentrated raya.. j .I s Y j The principal feature of the invention consists in supporting a reflector upon a vertical rotatable member and providing means to swing the reflecting surface from a substantially vertical positionto a substantially horizontal position and back again during the vertical rotation. Y

In the drawings, Figure 1 is an elevational and part verticalsectional view of the improved apparatus.

Figure 2'is a transverse vertical sect-ion of the column for supporting the reflector showingpart of themechanism arranged in elevation. Y

Figure 3 is a plan view of for operating the reflector. .t

y The construction herein showncomprises a base ..1 having a hollow column 2 rising vertically centrally thereof.

A journal bearing 3 is arranged axially at the bottom of the hollow column and a journal 4E is supported at the top of the column in alignment with the bearing 3.

A. shaft 5 is journalled in the bearings 3 and 4 and has secured to itsupper end a standard 6 which rests upon a ball bearing 7, carried bythe journal 4. standardv thus turn freely. c

A bevelled gearS is secured to the lower end of thek shaft 5 within thehollow 'base Vand is driven by a pinion 9 operated'by a shafty 10 driven by `any suitable form of controlled motive device. Such a device operates to turn the shaft 5 one revolution in twenty four hours. j

The upper end of the standard Gis provided with a transverse shaft 11.

Upon the ends ofthis'shaft are mounted a pair of gearv segments 12 andvthese are secured to the back Lot a reflector casing 13. The reflector is of a suitable construction to concentrate the. suns rays. received thereon whensaid raysare` directed on to the surface at somewhat,approaching a right angle and itis the purpose of this invention to maintain this reflecting surface in such a position throughout the day that the suns rays will strike it at lthe desired angle at all times. Y

In order to accomplish this result, it is the gear r1 n g The shaft an d Y tilt .the reflector, and to obtain this result a pair of spur pinions 14 are mounted on studs projecting from the rotatable standard G and these pinions mesh with the gear segments 12.

A ring 15 is mounted upon. the column f2 outside of the upper journal l and is provided witli gear teeth 16A adapted to mesh with the gear pinions. rl`hese gear teeth extend substantially half way around the column so that as the column rotates upon its axis7` the pinions on one side will travel for a distance without meshing with the gear wheel ring 15. Y Y

In the operation ofthe device the shaft 10 is driven so as to rotate the vertical shaft 5 one revolution in twenty four hours and the pinions 14 and gear ring 15 are so arranged that at midnight one of the pinions will engage the gear teeth 16. As the column slowly turns, the teeth of the gear ringv engaging the pinion carried by the column, causes the pinion to turn on its axis and this imparts a rotating movement to the gear segments 12 so that "the reflector is gradually swung upon its transverse axis toward a horizont-al position.

In twelve hours the maximum movement of the reflector member has been reached. During this period the pinion at the -oppo` site side of the standard has been travelling free over the portion of the ring not provided ywith teeth but when the pinion which hasY been engaging these teethdisengages therefrom, the other pinionv comes into engagement and as it is-arranged on the opposite side ofthe standard and connected with the gear segment Von the opposite side, the movement. of the pinion has the effectof reversing the swinging movement of the reflecting member bringing it back towardv the perpendicular.

It will thus be seen that the refiecting surface will follow the rising sun as its `elevation increases at mid-day when it reverses its movement and follows it toward its position at setting.

Thus. the `device is utilized to its maxirnum efficiency in concentrating the suns rays reflected therefrom over the maximum period. f

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W'ALTER J. HARVE 11101111.1111' 1111111011 to swing' J11'1111:-;- 110

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4202321 *May 30, 1978May 13, 1980Volna William MSolar tracking device
US4266179 *Feb 27, 1979May 5, 1981Hamm Jr James ESolar energy concentration system
US20120176694 *May 13, 2011Jul 12, 2012Google Inc.Heliostat System
DE3301046C1 *Jan 14, 1983Apr 5, 1984Dieter Dr-Ing SeifertTracking device
Classifications
U.S. Classification353/3
International ClassificationF21S11/00
Cooperative ClassificationF21S11/00
European ClassificationF21S11/00