US1436298A - Covering for boilers, pipes, and the like - Google Patents

Description

E. SPICER.

COVERING FOR BOILERS, PIPES, AND THE LIKE. APPLICATION FILED NOV. 11, 1920.

Patented Nov. 21, 1922 HBHVEWTR hump-6mm- Patented Nov. El, 1922.

UNHTEE EDWARD SPIOIEE, OF VJKNCOUVER, BRZTISH COLUMBIA, C/lE-TADA.

COVERING EOE BOILEES, PIFES, AND LIKE,

Application filed November 11, 1920. IE0, LQBAZO.

To all whom it may concern Be it known that I, EDWARD Semen, a subject of the King of Great Britain, and a resident of the city of Vancouver, in the Province of British Columbia, Canada, have invented certain new and useful Improvements in Coverings for Boilers, Pipes, and the like, of which the following is a specification.

My invention relates to improvements in covering for boilers or other analogous purposes, and the object of my invention is to devise a means whereby the asbestos covering usually employed may be easily applied and the use of which prevents heat from the boiler passing through to the out side of the covering or to the metal lining which may be used to cover the asbestos so that the outer surface of the cover is maintained at all times cool,

I attain this object by the means illustrated in the accompanying drawings in which- Fig. 1 is an outside elevation showing the boiler covered.

Fig. 2 is an outside elevation with the front part of the outer lining cut away.

Fig. 3 is a perspective view of the band.

Fig. 4 is a fragmentary view of a modification of the invention.

Similar figures of reference indicate similar parts throughout the several views.

In covering boilers according to the present invention metal bands, indicated by the numeral 1, are employed and in hot water boilers such as is shown in the drawings three such bands are preferably employed, one near the upper end of the boiler, one about the midheight, and one near the lower end and these bands are provided with inwardly turned members 2 of triangular shape, these members being formed out of the band itself by making two outs along the edges of the band at the designated positions and then bending inwardly the cut portion to extend at right angles to the inner periphery of the band, the inner points of the members being sharp on acount of their triangular shape. There are two series of members 2 in each band, one along the upper edge and one along the lower, and the bands are each divided, as at 3, the divided ends being turned inwardly at right angles and provided with holes through which a bolt 4; may be passed '0 draw the ends of he band together, a hole 5 being also formed in toe band so that a screwdriver r other similar tool may be passed through to hold the head of the bolt from turning. When the bands are place, sheets asbestos, indicated by the or numerals 6, Y, 8 and 9 are placed arour l boiler 10, the e ds of which sheets it i nin the bands 1 and rest on the members 2, and these sheets are then enclosed within sheet metal covers 11 and 12 having divided ends 13 and 14, one end, 13, being doubled over on itself to form agroove 15 adapted to receive the opposite end 14, and the covers are provided with opposed lugs 16 so that they 'may be drawn together and secured by the bolts 17.

It will thus be seen that there is then a space 18 left between the asbestos sheets and the metal covers which constitutes an air space so that the heat does not pass to the covers from the asbestos, nor does it pass to the covers from the bands since these are held clear of the boiler by the members 2, and as the members 2 themselves bear on the boiler only at their sharp pointed ends, the heat cannot travel along the members to the bands, and thus the outside covers are always maintained cool.

The upper end of the boiler may be covered with any suitable form of cover, such as indicated at 19 in Fig. 2.

While I have described and illustrated the carrying out of the invention by the means of the bands 1 it may be stated that instead of these separate bands a piece of expanded metal or wire mesh, in one or more sections to suit the length of the boiler, may be used, a fragment of such metal being shown in a and indicated by the numeral 20, and which metal is provided on its inner face with pointeo members 21 similar to the members 2 already described. In this case the metal sheet is wrapped around the boiler with the pointed members resting on the shell and the asbestos is then plastered on the metal to cover the same to a suitable. thickness. As the asbestos covering does not then bear on the boiler the heat does not pass through to the outside of the covering to be appreciably felt, nor does it heat the metal unduly, since only the sharp point of each member 21 touches the shell,

thus preventing the pointed members, and consequently the metal 20, from becoming unduly hot.

What I claim as my invention is 1. The combination of a boiler, a series of spaced bands surrounding the same, upper and lower sets of projections extending inwardly from each band into engagement with the boiler to space the body of the band 'heretroin, said projections being disposed inwardly of the upper and lower edges of the band, a sheet of non-conducting material enveloping the boiler between each pair of bands with the ends of the sheet confined beneath opposing edges of the bands, and a metallic covering inclosing the boiler and non-conducting material and spaced from the latter by engagement with said bands.

2. The combination of a boiler, a series of spaced metallic bands surrounding the same,

projections extending inwardly from each band into engagement with the boiler to space the body of the band thereform, said projections being disposed inwardly of the upper and lower edges or the band, and non-conducting material enveloping the boil er between the bands and held in place by engagement beneath the edges of the latter.

8. As a new article of manufacture, a retaining band for non-conducting boiler coverings comprising an annular body provided with pairs of incisions extending inwardly from the upper and lower edges of the band, the material between the incisions of each pair being bent inwardly to provide upper and lower sets of boiler engaging prongs disposed inwardly of the upper and lower edges of the bands.

Dated at Vancouver, B. (1, this 1st day of November, 1920.

EDWARD SPICER.

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