US657605A

US657605A - Coated metal pipe.

Info

Publication number: US657605A
Application number: US157500A
Authority: US
Inventors: William Lacy
Original assignee: Individual
Current assignee: Individual
Priority date: 1900-01-15
Filing date: 1900-01-15
Publication date: 1900-09-11
Anticipated expiration: 1917-09-11

Description

No. 657,605. Patented sepan, |900.

w. LACY.

COATED METAL PIPE.

(Application led Jan. 15, 1900.) (No Model.)

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UNITED STATES PATENT OFFICE.

WILLIAM LAoY,.oF LosiANGELEs, CALIFORNIA.

,COATED METAL PIPE.

EECTON formingpart of Letters Patent N o. 657,605, dtd Septem 11 17900- Application filed January 15, 1900. erial No. .-575. (No model.) u l To all whom it may concern:

Beit known that l, WILLIAM LACY, a citizen of the United States, residing at Los An-` geles, in the county of LosAngeles and State of California, have invented a new and useful Improvement in Coated Metal Pipes, of which the following is a specification.

My invention relates more particularly to undergrounglwpipes and is an improvement over the invention set forthin Letters Patent granted tome by the United States May 24, 1892, No. 475,454, for coated met-al pipe and methods of manufacturing the same.

My present invention is superior to that patented to me, as aforesaid, in that I use a fibrous sheet coated with a preservative gum and rendered absolutelyimpervious to mois-` ture and provide a coating of practically indestructible material embedded in the coating of preservative gum exterior the sheet of fibrous material. I prefer small gravel or' broken quart-z for the exterior coating, but any suitable silicious material will serve. The use of a fibrous sheet allows of a more tenacious covering, and the use of a silicious covering prevents any injury to the fibrous coat and prevents any wearing of the pipe from any ordinary handling or usage in transit to the point where the pipe is to be laid. A further advantage is that the silicious outer covering presents a surface which is clean, and the pipe can therefore be handled without inconvenience and will not adhere to other surfaces,as a surface covered with a gumV is liable to do when exposed to the heat of the sun. A further advantage of providing the exterior coating of silicious material is that it is not subject to decay and is not liable to be attacked by alkali soils.

The object of this invention is to provide a pipe havingvsuperior powers of resistance to the destructive forces to which underground pipe is subjected after being laid, and also to preventinj ury to coating of asphaltum on the pipe while in transit from place where made to place where laid.

My present invention consists in constructing a pipe with a strong inner shell of metal or other suitable material and an outer coating of grains of hard inelastic material and an intermediate cushioning-body.

My newly-invented pipe comprises a metal hard inelastic material, and a suitable bindi ing material. Preferably the metal shell has a coating inside and out of asphaltum or other suitable gum, and a fibrous sheet is applied outside the coated pipe with a coating of asphaltum or other suitable gum, and outside of the coated sheet is a coating of fine gravel embedded in and held by the coating of gum on the sheet.

The accompanying drawings illustrate my invention.

Figure 1 is a perspective view of a section of pipe embodying my invention. Fig. 2 is a fragmental enlarged cross-section of the pipe.

1 indicates the metal pipe.

2 and 'respectively Vindicate coatings of preservative gum on the interior and exterior ofthe metal pipe. r

4 and 6 indicate layers of fibrous sheets.

5 indicates the coating of preservative gum between the fibrous sheets.

' 7 indicates the coating of preservative gu m on the outer side of the sheet 6.

8 indicates the coating of silicious material embedded in the coating 7 of preservative gum. The fibrous material and the gum form an elastic or cushioning body between the harder outer coating and the metal shell.

In the manufacture of my improved pipe the inner shell of the pipe is dipped in heated asphaltum or other preservative gum or gums, and the fibrous sheets with asphaltum between are applied to its outside, the outer side of the fibrous sheet havinga coat of asphalt or preservative gum applied thereto and a coating of silicious material is embedded in the gum, either by means of rollers or by pressure applied in any-suitable manner.

What I claim, and desire to secure by Letters Patent of the United States, is-

l. A pipe comprising a strong inner shell; an outer coating of grains of hard inelastic material; and an intermediate cushioningbody.

2. A pipe comprising a metal shell; an intermediate cushioning-body; and acoating of ne gravel outside the cushioning-body.

3. A pipe comprising a metal shell; a body strong shell, preferablya IOO eoatiugon the shell; a fibrous sheetoutsidei` `formed'oa iibrousfsheet and a gum; 'aud *a coating of VAiiue gravel outside fth'e brois sheet. l

4. A pipe, comprising a metal shell; .a

lb'rous. coating outside the metal shell; anW

exterior coating vof granular hardjnelastio material and a suitable binding materiali` 5. A pipe comprising a metal shell; a gum the gum coating gV a gum coating outside-the fibrous sheet; and a coating of granulated hard and inelastic material v outside thefgum coating of s'aid'siheet.

6. The oombination of `a-rnetal pipeihaving