US1115340A - Canopy insulation. - Google Patents

Description

G. J. SCHOLL.

CANOPY INSULATION.

APPLIOATIOH IILED 0014, 1913.

1,1 1 5,340., Patented Oct. 27, 1914.

THE NORRIS PETERS CO.. PHOTO-LITH-L. WASHINGTON. D. c.

UNITED STATES PTENT @Flhli SE GEORGE J. SCHOLL, OF BROOKLYN, NEW YORK, ASSIGNOR TO KELTING ELECTRIC COMPANY, OF NEW YORK, N. Y., A COREOEATION OF NEW YORK.

CANOPY INSULATION.

Specification of Letters Patent.

Patented Oct 2?, 1914i.

To all whom it may concern Be it known that I, GEORGE J. SorIoLL, a citizen of the United States of America, and resident of Brooklyn, in the county of Kings and State of New York, (whose postoiiice address is No. 119 Pearl street, New York, N. Y.,) have invented certain new and useful Improvements in Canopy Insulation, of which the following is a specification.

This invention relates to a novel insulating means intended to be applied to canopies such as are used to conceal the entrance of electric wires through a wall or ceiling or the like. Such canopies are usually of the general character shown in the drawing, and comprise a shell adapted at one end to make contact with the surface of the wall or ceiling through which the electric wires are led, and providing also an outlet for the wires. In practice, it is necessary that the end of the canopy which makes contact with the wall or ceiling, shall be provided with insulation, as in cases where the wall or ceiling is of metal, the interposedinsulation serving to insulate the canopy from the wall or ceiling. This insulation has heretofore been accomplished in a number of ways, a familiar expedient being the attachment of a band-ring of fiber or other suitable insulating material to the rear edge portions of the shell, in such manner that the ring will project to the desired extent beyond the rear end of the shell, the outer edge of this ring then making contact with the wall or ceiling. This practice has been crude and comparatively expensive, principally because of the difficulty involved in fastening the insulating ring in place on the canopy.

Itis one of the objects of my invention to provide an insulating ring of fiber or the like suitable insulating material of such character that it may be easily manufactured in considerable lengths, cut up into smaller lengths appropriate for any particular size of canopy, and applied to the canopy without the use of any extra fastening means whatever and without the necessity for making any changes in the canopy itself.

I Other objects and aims of the invention, more or less broad than those stated above, together with the advantages inherent, will be in part obvious and in part specifically referred to in the course of the following description of the elements, combinations,

arrangements of parts, and applications of principles constituting the invention; and the scope of protection contemplated will appear from the claims.

In the accompanying drawings, which are to be taken as a part of this specification, and in which I have shown one of the various possible embodiments of this invention as at present preferred; Figure 1 is an elevation of a simple form of canopy with an insulating ring made in accordance with my invention applied upon the rear end thereof; Fig. 2 is a sectional view, broken away, showing in greater detail the construction of the insulating ring and its application tothe rear edge portions of the canopy; Fig. 3 is a view similar to Fig. 2, but illustrating a modified form of insulating ring; and Fig. 4 is a view similar to Figs. 2 and 3, but illustrating another modification of the ring.

Similar reference characters refer to similar parts throughout the several views of the drawing.

Referring to the numerals on the drawing, 5 indicates a canopy of conventional shape, and, as usual, circular in cross-section. The rear end of this canopy (the upper end in Fig. l) is intended to abut against the wall or ceiling and to conceal the opening in the wall or ceiling through which electric wires are led, such wires passing out of the canopy or shell as, for instance, at the forward open end thereof (the lower end in Fig. 1). Where it is desirable or necessary that the canopy should be electrically insulated from the Wall or ceiling against which it abuts, I prefer to accomplish this result by applying to the rear of the canopy a U-shaped ring 6 of fiber or other suitable insulating material, as shown in detail in Fig. 2, the legs of the U extending over and embracing between them the rear edge portions of the canopy. Preferably there is suflicient resiliency in the material of the ring so that when it is forced on over the rear edge of the canopy, it will be frictionally held thereon. It will be evident that such a U-shaped ring may be very readily made up in considerable lengths, and shorter lengths out off to suit the particular canopy. When so made, the ring will of course be a split ring, though it will be understood that I contemplate also the use of continuous rings.

In practice it is preferred to make up a considerable length of the folded ring material, suflicient to equip a given number of canopies. This length of material is now formed into spiral coils, of diameter greater than that of the individual canopy which is to be fitted. From this spiral length portions are cut off just long enough to completely cover the canopy edge, and by reason of the fact that the circle on which these cut ofl" portions have been formed is of greater diameter than that of the canopy edge, the ring will firmly engage such edge, by reason of its tendency to resume its former eX- panded condition. Somewhat the same result might also be obtained by making the spiral coils of diameter less than that of the canopy; but I would rather use the method described.

The embodiment described, and shown in Fig. 2, will effectually insulate the canopy, but in some cases it is desirable that the canopy when in position shall be positively spaced away from the wall or ceiling a distance greater than the thickness of the in sulating ring material. In such cases, instead of giving the ring a general U-shape, I may give it an S-shape as shown in Fig. 3, the additional leg or fold indicated by the numeral 7 projecting rearwardly to the desired extent as indicated in that figure. The same result may be accomplished by taking the U-shaped ring shown in Fig. 3, and

compressing the closed end thereof or otherwise giving it the permanent set, as shown in Fig. 4. v

The mode of operation of this device, the manner of its application in use, and its advantages will be apparent to those skilled in the art.

I claim:

1. A canopy and a split ring of resilient insulating material covering the rear edge of the canopy and havin portions engaging the inner and outer surfaces of the canopy, the ring being held in place on the canopy by its inherent resiliency.

2. A canopy and a resilient split ring of insulating material U-shaped in cross section covering the edge of the canopy and engaging the inner and outer surfaces of the canopy, the ring being held in place on the canopy by its inherent resiliency.

3. A canopy and a split ring of insulating material covering the edge of the canopy and engaging the inner andouter surfaces of the canopy, such ring being held in place on the canopy by its inherent resiliency and having a distinct distance or spacing portion.

In witness whereof I have hereunto signed my name in the presence of two witnesses.

GEORGE J. SCI-IOLL.

In presence of FRANK J. KENT, MARY I-I. LEWIS.

Copies of this patentmay be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

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