US107441A - Improvement in solar cameras - Google Patents

Description

iilated (States VNORMAN BRYAN, OFTHOMASTON, GEORGIA..

Letters Patent No. 107 ,441, dated S'eptembcr 20, 1870.

' IMPROVEMENT-IN SOI-IAR CAMERAS.

II'lhe Schedule referred to in these Letters Patent and making part of the s ame .'Z`o all whom it may concern p Be it known that I, NomrAN Barrax, of Thomas-v ton, in the county of Upson land State of' Georgia,

have invented a new and useful Improvement in Solar Cameras; and I do hereby declare-that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and'use the same, reference being had to the accompanying drawing forming part of this specification.

This invention relates to improvements in solai' cameras, and consists vin improved arrangements ot' apparatus for turning'v 'the reflector by clock-work attached for the purpose; also, in improved adjusting apparatus for varying the reflector, according to the suns variations. Y

Figure lis a side elevation of my improved camera.l

Figure 2 is a sectional elevation ot the sametaken on the line x a: of fig. 1.

Figure 3 is a partial section on the line y y and Figure 4- is a section on the line c' c' of tig. 3.

lSimilar letters of reference indicate corresponding parts.

A represents the front plate ofa camera-box.

B is a brass, or other metal plate, attached to the slide A of the box, for Ithe attachment of the appa` ratus.

C is a large opening through the same, to allow the light lays to be thrown into the box.

D is' a toothed-wheel rim tted to the edge of the plate B, in the hole C, to turn freely. It has a groove 'in the outer edge for the edge of plate B, and is pret'- erably made of three rings connected together by screws, the central ring being ot' lesser diameter than `the others, to form the groove.

E is the reflector. .It is hinged at F, to the toothed wheel rim, and hangs obliquely therefrom `to receive the suns rays and throw them into -the camera. It is supported by an extension-brace, G G', the parts of which slide on each other, and are clamped together by a screw, H. The said brace is connected to the ,reflector by'a hinged joint, and has a grooved roller,

I, at the opposite end, running on a circular rail, K, attached to theplate B, below the wheel-rim D, and arranged eccentrically to the same. This rail has an oblique lange, L, projecting downward from it, on which a hook, M, adj usta-bly attached the brace G G', -works to holdthe said brace, or the wheel in the end of it, down snugly onthe rail K, and prevent the wind, when acting on the reflector, from lforcing it out of place.

N is a yoke attached to the reflector, and arranged with the brace, to support it laterally while allowing it to move longitudinally through it.

For turning the reflector by 'a clock-mechanism, a shaft, O, is provided inside the case, with one pinion,

P, gearing with the wheel-rim, and another, Q, to he geared with one of the wheels of a clock-train. .This shaft is arranged to slide inthe direction of its length,

-to gear or ungear with the clock-train, and has a spring, R, to throw it out of gear, the end on which vthe pinion Q is, passes through the end of a bent bar, S, passing through a slot in the 'plate B, and having a notch, X, in the lower edge, which drops down and catches on the plate at the lower edge of the slot, when the shaft is moved` forward. to gear with the clock-movement, and holds it in gear aga-inst the action of the spring.

U is a trip-lever pivotcdto the plate under the bar S, and arranged to be raised against it by -a pin, V, on the wheel-rim D, when it is required to stop the movement of the reflector when the sun goes down.

Anotherpin, W, on the said rim strikes the levez` U on the top and arrests the reflector, when turned back again to beset inoperation in the morning.

For gearing the shaft and-wheel-rim with the clockmovement, it is pushed forward by force applied on the outer end, or on the outer c nd of' the bar S, until the bar drops and engages, by its notch X, with the plate B.

' The gearing, and the connection of the same, should be such as to turn the reflector a half revolution in twelve hours.

The rail K should he a complete halt' circle, larger than rim D, and placed ecccntrically below it, so that the center will be further away from the wheel-rim than the ends, the object of which is to cause the relieetor to follow the elliptic movement of the sun, the reflector vbeing thrown forwardto meet the rising sun, and falling away, increasing the angle with the plate B untilnoon, then diminishing it again till evening.

This ring is hinged at Z, and provided with adj ust ing-screws, Y, for moving the lower part out and m,

as a further means ot' adjusting the reflector to follow.

the movement of' the sun.

By means of the extension-brace Grl G', the reector' maybe raised or depressed, as the sun varies north or south in winter and summer.

The clock-movement may have an additional spring to aid in propelling the reflector, or the additional Having tlins described my invent-ion, 3. vThe combination, with the sliding shaft O, catch- I claim as new and desire to secure by Letters bnr S, and spring Ii, of 4the trip-lever U, pin V, and lntentwheel-.rim pinion l), all substantially as specified.,

1. The combination, with the reflectm-E and wheeiv The above. specification of my invention signed by riln D, hinged together, as described, of the extension me this 14th day of Marcil, 1870.

brace G G', curved rail K, hooked bnr M, and Range NORMAN BRYAN. L, all substantially as specified.

2. The arrangement of the: rail K, eccentricaliy Witnesses: with the toothed rim D, and foradjustmnt to or JAMES W.1I1G.HTOWER,

"from the vertical plane of' the plate B, ail substantially W. SAWYER.

as specified.

Images