US245083A - Covering for steam-pipes - Google Patents

Description

(No Model.)

R. H. MARTIN.

COVERING FOR STEAM PIPES. No. 245,083. Patented Aug. 2,1881.

h in

Bonner H. MARTIN, on

aren't BROOKLYN, NEW YORK.

' GOVERlNG FOR STEAEW=IPIPES.

srnclrxca'rrolu forming Application filed May 13, i881. (no model.)

To all whom it may concern: Be it known that I, ROBERT E. MARTIN, of the city of Brooklyn, in the county of Kings and State of New York, have inventednew and nsefullmprovements in Non-Conducting Coverings for Steam and Hot Pipes and Boilers, 850., of which the following is a description, reference being bad to the drawings, wherein-- Figure 1 is a longitudinal section of a pipecovering. Fig.2 is a cross-section of the same.

Similar letters denote corresponding-parts.

The nature of my invention consists in the manner of employing loose fibrousmaterial conveniently and eflectually as a non condnctor.

The object of my invention is to employ successfully loose fibrous materials soas to obtain themost perfect non-conductor of heat known. The conduction of heat depends upon a medium through which it may progress from molecule to molecule, and the rate ofprogres sion will dep'endin a large measure upontheamount of contact between the molecules.

It is well known that confined air is an excellent non-conductor of heat, and the excel lence of a covering depends largely ,on the character of the material used andaheamount of air-space which is permitted either by the nature of the material or its condition. -li eltand fibrous coverings, such as paperjor-woven' fabrics, depend mainly for their bad conduct-c ing property on the interstices between fibers. The looser the felt or web the, greater the interstices for air and theair-spaces. The com- S bustibility, too, of the material. used is important, in that the life of the covering is determined by it. I v

I have found the most advantageous "cover-- ing to consist in the use of loose fiber of asbestus, because with it I obtain absolute indestructibility by carbonization, with approximately the greatest amount of air-spaces. To avail myself of this feature I have invented the following-described method of applying it.

In the drawings, A is a continuous sheet of asbestus or felted, woven, or compressed fabric, as paper, which is rolled as a coil. As rolled I feed between the coils loose asbestus or other non-conductin g fibrous'or porous material, B, of similar character, in such manner obtained a pipe of alternate layers of felted,

woven,orcompressed material andloosefibrous or porous material results.

The ends of the pipe, as well as the inner and outer ends of the coiled roll, may be socurely closed by any suitable cement or adhesive material, such as silicate of soda.

The same or other adhesive materialmight be applied to the sheet as rolled; but the quantity used should be as small as possible, for such material is in a degree a good conductor of heat.

The roll when made may be finished by any desired covering of paper, canvas, or other material ordinarily used for such purpose, and

application.

In cases where the covering is to be applied to other than cylindrical surfaces, the covering should be made in sheets, of three or more alternate layers of sheet and loose fibrous material, sealed at its edges by adhesive material or by sewing or metal fasteningsof approved character.

The method of coiling or rolling is not important. g

I am fully aware that coverings have been made by coiling alternate sheets of different materials, but not by an alternate sheet and loose fiber. Y V

' I use theword loose in this specification in contradistinction to the term fabricated, whether referrin g'to woven ,felted, compressed, or other fabric.

I am aware that loose asbestus fiber has been applied as a covering when confined by and contained in a receptacle of wire cloth or gauze surrounded by a non-conductor; but my invention does not contemplate such an application of fibrous material. 7

'What I claim as new, and desire to secure by Letters Patent, is-

As a new article of manufacture, a nonconducti'ng covering for steam and hot pipes,

' 820., composed of a coil of alternate sheet andloose asbestus or similar material in fiber, so

as to be placed around pipes or other surfaces;

to be covered, substantially as described.

ROBERT H.- MAETIN.

Witnesses:

JAMEs DEMABEST,

that when a roll of the desired thickness is WILLIAM A. BARR.

maybe split longitudinally for convenience of

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