US1386277A - Building-felt or construction material - Google Patents

Description

R. P. PERRY.

BUILDING FELT 0R CONSTRUCTION MATERIAL. LICATION FILED OCT. 8. 1918.

1 386,277 Patented Aug. 2, 1921.

ATTORNEY waterproofing material materials, since oblong PATENT OFFICE.

RAY P. PERRY, OF UPPER MONTCLAIR, NEW JERSEY,

ASSIGNOR TO THE BARRETT COMPANY, A CORPORATION OF NEW JERSEY.

BUILDING-FELT OR CONSTRUCTION MATERIAL.

Specification of Letters Patent.

.Application filed October 8, 1918. Serial No. 257,395.

T 0 all whom it may concern.

Be it known that I, RAY P. PERRY, a citizen of the United States, residin at Upper Montclair, in the county of E ssex and 'State of New Jersey, have invented certain new and useful Improvements in Building-Felt or Construction Materials, of which the following is a specification.

This invention relates to a new and useful building felt or construction material. It relates more specifically to felt which is made of fibrous material, or even paper stock fibers, having distributedtherethrough comminuted waterproofing material in the formof shot or substantially spherical particles, or particles which are not extended greatly in any direction, but which are of appreciable size as contradistinguished to dust or powder.

It has been found that when particles of in the form of powder or dust is introduced into the paper or felt during the formation of the sheets on w an ordinary paper-making machine having a foraminous cylinder, the sheets are not very porous,'but the fibers are closely knit with the fine particles of waterproofing material filling, to a considerable extent, whatever interstices there may have been between the fibers, thus rendering the sheets incapable of readily absorbing a large amount of liquid waterproofing material.

en waterproofing material in the form of filaments is introduced into the sheets in a similar manner the sheets are rendered more porous, but if the filaments are made of 1112.- terial that is brittle when cold, some of them will be broken into short pieces as a result of handling and bending the sheets after the are formed.

y this present invention the sheets have distributed therethrough particles of waterproofing material which are solid at ordinary temperatures and which are not considerably lengthened or extended in any direction. Pre erably, the particles are in the form of shot or globules and are made of pitch or other bituminous material, though it is to be understood that the invention is not restricted to these particular shapes or or spheroidal or other shapes which will not readily be broken upon bending the sheetsmay be used, and the materials may be I'OSlIl, wax, shellac, tallow or other waterproofing material hich is olid a side when cold. Thesize of the particles may vary from those having a dimension as great as one sixteenth of an inch down to those ust large enough to be caught on a hundred mesh screen. The preferable sizes are those whlch willpass through a thirty mesh screen but will not pass through a hundred mesh screen. The porosity of. the sheets will vary, depending somewhat upon the size and number of the particles distributed therethrough. I

The invention will be readily understood from the accompanying drawing which is view of a paper-making machine, partly in section.

In this view reference character T represents a tank having a foraminouscylinder C therein upon which is formed the usual layer 2 of paper or felt which is picked up by means of the wet blanket 3 passing around the rolls 4 and 4'. The sheet passes along the suction box 5 where a portion of Patented Aug. 2, 1921.v

the water is removed and then under-the v rated. into the sheet 2 uponthe cylinder C and form a part of this sheet. These particles being knitting or matting as closely as they otherwise would, thus making the sheet more porous and better adapted for absorbing li uid waterproofing material during the su sequent saturating operation whenever such round, prevent the fibers from an operation is desirable, as wellas permitting ready drying or evaporation of the moisture during the drying operationfl While any desired proportions of the ingredients used in making the sheet may be employed, I prefer to use between 10% and 90% by welght of waterproofing material the remainder consisting of paper or felt stock. 0

It is obvious that the drymg may be done by air instead of hot cylinders, and that the saturation of the sheets with liquid waterproofing material may be accomplished, for example, by passing the sheets through a bath of the saturant.

The sheets produced in accordance wl h this invention are very porous and flexible;

they are not seriously impaired by repeated bending or flexing; they will readily absorb a large amount-of waterproofing material; they are easily dried; they contain a considerable proportion of waterproofing material in the form of solid particles even before any saturating operation with liquid.

waterproofing material takes place.

Claims:

1. As an article of manufacture, a sheet of porous, flexible building felt containing rounded particles of waterproofing material too large to pass through a hundred mesh screen.

2. As an article of manufacture, a sheet of porous, flexible building felt containing waterproofing material in the form of shot of appreciable-size, and fibrous material.

5. As an article of manufacture, a sheet" of porous, flexible building felt consisting of between 10% and 90% of waterproofing material in the form of rounded particles in size which will pass through a thirty mesh screen but will be caught 1 mesh screen, and'fibrous mater al.

In testimony whereof I affix my signature.

v v RAY P. PERRY.

211. a hundred

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