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595,265 · Ewen · "Support For Prism-Light Canopies" · Page 1
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Patents: 396 of 511
UNITED STATES PATENT OFFICE.
JOHN MEIGGS EWEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE
LUXFER PRISM PATENTS COMPANY, OF SAME PLACE.

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John M. Ewen
19 of 21
SUPPORT FOR PRISM-LIGHT CANOPIES.
SPECIFICATION forming part of Letter Patent No. 595,265, dated December 7, 1897.
Application filed October 2, 1897. Serial No. 653,781. (No model.)
To all whom it may concern:
    Be it known that I, JOHN MEIGGS EWEN, citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented and produced a new and useful Improvement in Supports for Prism-Light Canopies, of which the following is a specification.
    My invention relates to supports for prism-light canopies, and has for its object to provide a new and improved support for such canopies, of which the following is a description, reference being had to the accompanying drawing, wherein is shown a perspective view of a series of canopies provided with supports embodying my invention.
    When a very large prism-light canopy is used, the canopy is necessarily of great weight and hence difficult to handle. It is also necessary to wash the canopy occasionally in order to prevent its efficiency from being decreased by the accumulation of dirt.
    The object of my present invention is to provide means whereby these canopies can be easily reached for washing or other purposes without the difficulty and inconvenience of changing their position and at the same time to provide a strong artistic support.
    As illustrated, I have shown a series of heavy canopies A A in proximity to each other, each provided with a supporting device comprising a ladder B, so arranged that the person who is to wash the canopy may easily reach it. In cases where the ladder B cannot be easily reached from the window I provide a ladder C, leading thereto, as shown. The canopies are placed in position and normally held in such position by the supporting-ladders, the whole so arranged that a person can easily reach the canopies by means of the ladders and clean their surfaces or perform any other operation desired. It is of course evident that a single canopy may be provided with one or more ladder-supports, and I have only shown the ladders
in connection with a series of canopies for the purpose of showing that a single ladder may be utilized for two canopies. A further feature of my invention is to secure the ladder intermediate between the adjacent prism-plates, so that the cleaner when he mounts the ladder will be in a proper position to clean either the whole or a portion of each of the adjacent prism-plates. In this way the bars or braces, which must extend from somewhere near the corner of each prism-plate down to the wall below, become the side pieces of the ladder. This spacing of the canopies is a necessary result incident to the construction of buildings, and the interval between the two windows is ordinarily just about sufficient for the ladders. I have not attempted to show any details whatever, and the parts may be said to be diagrammatically shown. Neither have I attempted to show proportions or exact relations of the parts. It is also evident that the construction and arrangement of these ladder-supports may be changed at will and will depend upon the conditions to be met.
    I claim—
    1. The combination of a canopy with a supporting device, said supporting device comprising a ladder by which the canopy is made accessible for cleaning or other purposes.
    2. A support for canopies, comprising a rigid ladder-like part permanently connected with the canopy and so positioned that the canopy can be reached by climbing thereon.
    3. The combination with a prism-light canopy of a permanent support therefor, said support comprising a rigid ladder-like part permanently connected with the canopy and so positioned as to be easily reached from the opening with which the canopy is associated.
JOHN MEIGGS EWEN.
Witnesses:
    DONALD M. CARTER,
    HOMER L. KRAFT.