US940265A - Sectional asbestos covering. - Google Patents

Description

l UNITED STATES PATENT OFFIOE. y

WILLIAMS J'. MOEIIZJ'JER., QF HARTWELL, OHIO, ASSIGNOR TO THE PHILIP CAREY MANU- FACTURING COHPANY, F LOCKLAND, OHIO, A CORPORATION 0F OHIO.

d i i SECTIONAL ASBESTOS COVERING'.

Specification of Letters Patent.

Applicationled March 7, 1908. Serial No. 419,640

and useful Improvements in Sectional Asbestes Coverings, of which the following 'is a specification.

My invention relates to insulating coverings, the object being to provide such coverings of asbestos in sections of elongated formation reinforced longitudinally against -1nay occur in handling.

breakage and separation of their parts which The asbestos in such coverings is usually porous and felted in character. 4

My invention consists in the Acombination with such a section of asbestos insulating covering, of a reinforcement bar extending in 'general direction longitudinally ofthe sectionlnd embedded therein and having projections extending transversely thereof, as will hereinafter be more fully described.

In the drawing: Figure l is a perspective view of one of the sections, the reinforcement bars being indicated by dotted lines.v

Fig. 2 is a detail perspective view illustrating the formation of one of the reinforcement bars illustrated in Fig. 1. Fig. 3 is a cross section on a line corresponding to w-w -of F ig.` l, the reinforcementbars being shown in elevation, and the section or block of asbestos covering being represented as broken, but held against separation of its parts by the reinforcement bars. '-F ig. 4 is a detail perspective view of part of a reinforcement bar of modified formation. F ig. 5 is an end elevation of a section or block of asbestos covering in which reinforcement bars of the Vformation illustrated in F ig. 4 are used, these reinforcement bars being represented by .dotted lines. Fig. 6 is a cross section on a line corresponding to y-y of Fig. 5, the reinforcei'nent bars being shown in elevation. Fig. 7 is a detail perspective view illustrating part of a reinforcement bar i of another modified. formation. Fig. 8 is a plan view of a section or block of asbestos covering in which reinforcement bars similar to .those illustrated in Fig. I.71'are used. Fig. 9 is an end elevation of -asection of asbestos covering in which reinforcement bars l similar to those illustratedin Fig. 7 are used.

As an example ofthe vu'se of my invention,v

I have illustrated in the various figures 'of the drawing, sections or blocks of asbestos covering of segmental formation such as are usuall employed in covering'steam pipes or boi ers, or other convex surfaces required to be insulated for retaining the heat in them, these sections or blocks being of considerably greater length than of width and thickness. Owing to the fragile nature of the asbestos forming such sections orl blocks, and to the necessity of handling the blocks in applying them to the surfaces, it is desirable that they be reinforced against the decovering beineF applied, as it is, in sections, and being heId upon the surface by additional means, such as sheeting or hoops, or both, a simple fracture such as the one illustra'ted in Fig. 3 ofthe drawing will not be of great consequence if the block is held together longitudinally aft the fracture, since the sectional nature nf he structure of the complete covering primarily involves the presence of joints between the various sections, 'and a'n additional joint, which the meeting of the parts of the broken section at the fracture practically constitutes, does not materially reduce the eiiiciency of the covering. It is for this reason that I provide my improved sectional asbestos covering with reinforcement bars running longitudinally ofthe elongated sections to reinforce them tions extending substantially transversely of the sections, which will prevent movement-of parts of the sections in a direction parallel to the general direction of the reinforcenot so essential, inasmuch yas lthe block is thickness and not so subject to fracture longitudinally, as to transverse fracture, such asjthe fracture 4 illustrated in Fig. 3 of Patented Nov. 16, 1909.

against transverse fracture, with projec-.

However, it should .bel nf'ged that the transverse reinforcement 1s-lr narrow in proportion to its length and structive effects of such handling. This l ment bars. Thus, in Fig. 1, the elongated/ A ly Atakes theforin of a channell and thus .constivthus be the equivalent of the reinforcement the drawing. 'it will be readily understood, by referring to Fig.- 3 of the drawing that, although theblocks should be fractured as illustrated, the parts 5 and 6 of the block formed by the fracture cannot separate owing to the angular extensions constituted by the hooks B on,the reinforcement bars The reinforcement bars 2 are preferably composed of wire, which is. embedded in the asbestos when the blocks are made, and are of such thickness that. they are sufficiently rigid 'to form an etlicient stay or reinforcenient to the block. However, although it is desirable that the reinforcement, bars be rigid enough to prevent the transversey fracture of the block, it is also desirable that the weight otn theblocks be not increased disproportionately, and to provide for this requirement, a reinforcement bar of the for-1 mation illustrated in Fig. ft may be used, which consists in a strip 7, of sheet metal, curved transversely at and ,9, so that it tutes a light and rigid reinforcement of the block longitudinally, when applied als illustrate'd in Figs. 5 and (3. ln order that the reinforcement bars T may le angulated and bars 2 illustrated in Figs. l, 2 and 3 of the drawing, it, provided with recesses oi' notches it), so that between these recesses or notches, angular extensions 1l are left which present edges or surfaces l2 disposed transversely of the block and consequently at right angles totlie general direction of the reinforcement bars 7, so thatthey will effectually prevent: movement of parts of the asbestos block parallel to the reinforcement bars 7 in case of transverse fracture. In the fui-ther modification illustrated in Figs. 7, 8 and 9 of the drawing, the reinforcements are constituted by sinua'ted Wires 13, the sinuations 14 of which constitute projections extending transversely `of the block, so that they are equivalent. to the projections 3 and 11, of the' reinforcement bars 2 and 7 respectively, illustrated in the preceding figures of the drawing.

In any of the equivalent formations, illustrated in the drawing and hereinbefore dei scribed, it will be ,noted that 'the reinforcement bars terminate short of the ends of the asbestos blocks so that said reinforcement bars are completely inclosed' in the blocks.

This complete inclosure of the metallic reinforcement bars is desirable so that the smoothness o'f/the ends of the sections, where joints must be 4formed in laying the l o locks,` Willbe insured. Asbestos blocks reinforced according to myinvention Will not only more etfectuall i resist the damagingr effects of the handling from the place of manufacture where they arevto be used, an( in laying them upon the surface to be insulated, but

vthis reinforcement is also useful when it becomes necessary to remove theblocks from thc boilery or steam pipe to make repairs.

In' the case of removal of the asbestos blocks, especially after they have been in use upon the boiler or steam pipe for a considerable length of time, the asbestos .composing the blocks has deteriorated. This deterioration, although it increases the insulating qiiality to the placeof the covering rather than decreases it, resuits in the part icles of the asbestos, compos ing the" section or block, becoming incoherA ent, to the extent that the removal of the sections or blocks for the purpose of repaAirs to the surface which they have been covering Without breaking or destroying them is rendered difficult, unless they are reinforced as herein set forth.` Y

Having fully described my invention,ivhat l claim as new and desire to secure by Letters Patent is:

v-Ars a `new article of manufacture, a section of asbestos insulating covering comprising porous and felted material formed of one piece in combination with a reinforcement bar extendingin general direction longitudinally of said section and embedded therein, said reinforcement .bar having 'rejections extending transvierselythereo substantiallyV as set forth and for the purposes specified.. .I

Y WILLIAM MOELLER,

` YWitnesses:

W. H. Sociais,- E. G. Ross.

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