US1793439A - Construction material - Google Patents

Description

Patented-Feb. 17, 1931 UNITED STATES PATENT OFFICE- ALBERT C. FISCHER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE PHILIP CAREY MANU- FACTURING COMPANY, A. CORPORATION OF OHIO consrnncrron MATERIAL Ilo Drawing.

turedescribed herein.

A I have found that in utilizing mixing machines for incorporatin stifi masses into the ductile substance whic may be asphalt or any other compound having a ductile nature,

and by incorporating said materials in considerable proportion, and later passing said batch or body of mixed material between belts, which draw in one direction, which machines have also been previously described, and are known to the art, that by reason of feedinga stiff and large mass to said machine,

the fibrous matter or particles incorporated therein are made to arrange themselves in a laminated formation between layers of water.- proof binding material, most of the fibrous matter stringing itself and forming itself so as to lay in one direction, makinga series of laminated layers alternating with each other on the order of a shale-like structure which build up an internal structure in a body of ductile. material.

I use preferably strips of saturated felt or scrap roofingstrips preferably x25 or any other suitable size, or other roofing material or fibre which may be in the nature of a waste product or a specially treated product, and for this purpose anything having a suflicientbodyto resist breakage in the mixing will answer for the structural reinforcement.

The binding material may be a blown asphalt or rubber, resin compound or any like combination preferably of a water-resisting. nature, and the percentage of such ductile matter, would approximate 70% to approximately 25 to 30% of the scrap or fibrous ma- Application filed March 25, 1925. Serial No. 18,828.

terial. The batch is generally mixedv at a melting point in which the material is not in excess of 300, as better results will be obtained by mixing at the lower temperatures,although fairly good results can be obtained by mixing at the higher temperatures.

The basis in forming my invention consists of a batch or mixture as described and in drawing the batch between belts and between presure rolls which cause the asphalt to align itself and in doing so pull the fibre or strips in one direction, making a board having the grain in one direction and a cross section the same as lumber. is preferably rolled in thin sheets and may be used for roofing, expansion joints in road construction, siding or any other suitable material in the construction line.

The fibrous material may be saturated or unsaturated or may be treated with any asphaltic or other suitable material which may increase its strength, the main object being to secure a laminated shale-like structure with the fibre or strips running in the direction of the pull of the belts or amalgamated ina manner to form strength in the ductile material;

To reproduce the product described I proceedby first melting the ductile material, blown asphalt as an example, so as to reduce the same to a liquid consistency. Un-,

less the asphalt was melted in a. mixer I would, of course, have to transfer it to a mechanical mixer, preferably one that has heatin'g'facilities, so as to retain the'asphalt at the desired" liquid consistency.

In startingtermined quantity of the asphalt collected in the same I proceed to add successive quantities of the filling material until the desired ratio with respect to the asphalt had been This materialthe mixer up with a prede incorporated. The addition of the filling material of course thickens the asphalt. After the mixing had been carried out to. a point where a thorough mix has. been realized, I. removethe mass from the mixer and introduce itto sheet forming apparatus, such as the belts referred to, where it is reduced into the form of sheets. The belts, as explained, set up a flow in the mass which will align the pieces of filling material and cause them to he in the direction of the feed of the asphalt thru the belts, thus developing the laminated, shale-like structure re- 5 "ferred to.- In using rubber or a resin compound the same may be added to the'asphalt prior to the incorporation of the filler.

I claim: 1. Constructional material comprisin a 1 sheet of waterproof ductile material havlng i a filler mixed therewith in the form of flat I scraps of roofin material separated from each other by thicknesses of the ductile material. V

2. Constructional material comprising a sheet of Waterproof ductile material having a filler mixed therewith in the form of flat st'ri s of felt separated from each-other by thic esses of the ductile material.

2o 3. Constructional material comprising a sheet of-rubber and a resin compound. having a filler. mixed therewith in the form of roofing scrap, separated from each other b thicknesses of the compound."

2 4. constructional material comprising a sheet of rubber and asphalt compound having/a filler mixed therewith in the form of laminated flakes of felt, separated from each other by thicknesses of the compound.

5. Gonstructional material comprising a sheet of rubber, asphalt and resin compound, having a filler mixed therewith in the form oflaminated flakes of felt separated from each otherby thicknesses of the compound. I

6. Constructional material comprising a sheet of waterproof, ductile binder having mixed therein flat and relatively thin strips of fibrous roofing scra ALBEEEr o. FISCHER. 4o