US1483711A - Roofing paper - Google Patents

Description

Feb. 12 1924.` 1,483,711

M. BLUMENTHAL ROOFING PAPER Filed March v,29. 1919 Patented Feb. 12', 1924.

UNITED STATES Mannion BLunENTHaL, or BROOKLYN, NEW Yom;

BOOIDWG PAPER.

Application ledflarch 29, 1919. Serial No. 286,127.

To all 'Lb-110m' it mag/concern Be it known that I, MAURICE BLUMEN- THAL, a citizen of the United States, and resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Roofing Paper, of which the following is a specication. t

his invention relates to Tooling papers such as are employed for surfacing roofs or for analogous purposes. Thile my invention has special relation and adaptability to surfacings for roofs, itwill be understood that the paper or composite body sheet as produced by my improvements may be employed in any other conditions or uses for which a productof this type is adapted.

Roofing papers of the type to which my invention relates have usually heretofore been formed of a felt-paper body which is impregnated or saturated witha compound formed of tar or asphaltum or oth/er waterproof elements and has affixed over its top surface a tine gravel or pulverized pebbles. In this construction, the gravel or pebbles are liable to'penetrate or puncture the paper body under pressure, and they produce a very uneven and irregular tread surface and also limit the pliability or flexibility of the composite body. Furthermore, roofing pa-v pers of this common type are deficient in reproof character and are liable to damage Y by tearing in handlingor in other conditions of laying or use.

The object of my invention is to overcome the above-noted objections and disadvantages, and to' provide an improved rooting paper or surfacing sheet of the character set forth, which can be more economically and e'ectively manufactured. which will be liable and flexible underall conditions, which will be effectively fire-resisting, and which. will furthermore possess advantages in point of strength, durability, convenience, inexpensiveness, effectiveness, and general eiiciency.

In the drawings- V Figure 1 is a plan view of a portion of a length of the improved roofing paper or .surfacing sheet, partly broken away to show the underlying construction.

Fig. 2 is a detail cross-section on an enlar ed scale, taken on the line 2 2, Fig.'1.

ig. 3 is a plan view, corresponding to Fig. 1,-illustrating a modified condition of construction,

Corresponding parts in all the figures are denoted by the same reference characters.

Myimproved rooting paper or surfacing sheet is constituted by a composite body which comprises two body sheets. 1 1, respectively forming top and bottom members. Said body sheets are formed of a suitable pliable or flexible material. preferably felt paper, though they may be constituted by a textile or fibrous or other absorbent or adapted material. The body sheets l-l are superposed and united and adhesively secured together over the area of their opposed surfaces by a suitable adhesive compound, 2, to produce a composite body sheet, which compound is also taken up or absorbed by-the superposed sheets `so that the latter are impregnated or saturated therewith. The uniting and saturating compound has a water-proof character, and may be a tar or asphaltum composition, but I prefer to employ a compound which will impart to the composite body sheet a water, acid and fume proof character, and for this purpose the compound may consist of animal or veg" etable fats or oils combined with mineral waxes` such as ozocerite. mineral caoutchouc. gilsonite. or retiuite. which compound will have a melting point approximately 375 F. and a permanently adhesive or tacky and impervious quality.

Over the surface of the impregnated top sheet 1 is laid an outer surfacing of mica scales, as at 3, which adhere to the sheet and maintain a permanent 'status with relation thereto. The mica surfacingis applied to thesheet by pressure, preferably' under a high degree of hydraulic pressure, and the mica scales are afix'ed in scattered position so that they cover the full outer surface of the sheet and form the tread sur face of the roofing paper. There is thus roduced a substantially smooth tread surace which will n ot puncture or penetrate the underl ing sheet, which is very tough and durabl7 fume proof. Thel mica scales are scattered in their positional lay over the sheet 1 so that they overlap, as indicated at 4, thus ensuring a complete surface covering affording a pliable lamin which will not detract from the flexibility or pliability` of the composite sheet but will operate as a reinforce therefor and as a resistance against tearing of or damage to sheet. I

v e and which will resist a highv degreeof heatl and is itself water, acid andv prefer to rst grind mica to produce the small and thin scales which are employed for the tread surfacing as above described and which constitute l a very inexpensive and easily applied element in the manufacture of the improved product constituting my invention. 1

In lthe preferred construction, there is also placed intermediately of the superposed body sheets lw-L'and in association with the vuniting and impregnating compound 2, a fibrous filler, 5,V which is spreadk and sandwiched between the 4.body sheets over the general area of the opposed surfaces thereof and forms an effective supplementary lreinforce against strain or tearing in any and all directions. Said fibrous filler preferably consists of asbestos suitably ground into strings or fibers, which filler will also enhance the fire-resisting quality and the strength and durability of 4the composite 'sheet as produced accordingto myinvention, but the filler under some circumstances of use may consist of cotton waste or cotton sweepings or other suitable or desired fibrous material.

I have illustrated in Fig. 3 a modified construction in which, as a further resistance to tearing or damage of the composite sheets in handling or in use, and to enhance the lstrength and durability of the product, longitudinal strips, as at 6 6, are located respectively at the side edges of the composite sheet intermediate of the body sheets 1-1 and in association with the uniting adhesive and impregnating compound 2. These strips are of suitable Width, so that they reinforce the /area of the edge porv tions of the composite sheet at all points extending from the actual plane of the edge, and they are formed of a suitable pliable material, preferably a textile or mesh fabric, or a paper or fibrous material havingcsuiiicient strength as a reinforcement and as. a preventive "against tearing of the edges of the com ositev` sheet under any conditions of handling `or in application or use. The strips 'or tapes may under some conditions of use consist of `an asbestos fabric.` Corresponding lon itudinal stips or tapes,-. as at 7, preferab y wider then said edge. strips, are inthe preferred construction .of` my improvedv composite sheet, according to the modification shown in Fig. 3, located intermediately of the edge strips and at the central portion of the composite sheet, or the may be located at portions', said inintervals between thee termediate strips-being in arallel relationship to the edge strips an likewise in association with the uniting adhesive and impregnating compound between the body UnderY some conditions of construction according tc my invention, the under body pliable body sheet 1 may be dispensed with, so that the i composite sheet consists of the top sheet 1 having the outer tread surfacing 3 of scales of mica or other analogous mineral substance and the impregnating and adhesive compound 2, with or without the fibrous filler 5 at the under side of said top sheet.

In the. practical and economical manufac-` ture of the improved composite sheet, the sheets 1-1 are passed 'through pressure rolls, in association with the uniting'and impregnating adhesive compound, under the action of' suitable mechanism for feeding and placing the surfacing scales 3 and the intermediate fibrous filler .5 and also the reinforcing strips or tapes 6 and 7 if the latter are employed, and pressure action is exerted to press together in securely associated position the several elements or members of the composite sheet.

The advantages of my improvements will be readily understood. The invention produces an improved composite sheet adapted for roofing `or other analogous surfacing uses, which in its general characteristics is fire-resisting, waterproof, and flexible or pliable under all climatic conditions or circumstances of handling which affords a tread of outer surfacev which is substantially smooth and is itself fire, water, acid and fume proof, and which is furthermore eX- tremely strong and durable and can be economically and effectively manufactured.

I do not desire to be understood as limiting myself to the detail features of construction as herein shown and described., as it is manifest that variations and modifications therein may be resorted to, in the adaptation of my invention to varying conditions of use, without departing from the spirit and scope of my invention and improvements. I therefore reserve the right to all such variations and modifications as properly fall within the scope of my invention and the terms of the following claims.

Having thus described my invention, I claim and desire to secure by Letters Patent:

1. An improved composite sheet of the class described, comprising superposed pliable body sheets united and adliesively -secured together at their opposed surfaces by an adhesive compound and impregnated therewith, longitudinal reinforcing strips or tapes extending intermediately of said body sheets, and an outer surfacing consisting of scales of mica covering the surface of the top body sheet. v

2." An improved composite sheet of the class described, comprising superposed pliable body sheets united and adhesively secured together at their opposed surfaces by anv adhesive compound andv impregnated therewith, a fibrous filler located in associatio. with the uniting adhesive compound intermediately of said body sheets and extending over the general area of the opposed surfaces thereof. longitudinal reinforcing strips or tapes extending intermediately ot' said bod \v sheets. and an outer surfacing consisting of scales of mica covering the surface of the top bodysheet.

3. Asan improved article of manufacture, a composite sheet comprising superposed pliable body sheets united and adhesively secured together at their opposed surfaces by an adhesive compound and having longitudinal flat reinforcing tape strips extending intermediately of said body sheets and in association with said uniting adhesive compound. said reinforcing strips having. a width corresponding to the area of the edge portions of the composite sheet and extending from the actual plane of the edge at alln points thereon inwardly over the area of th edgeA portions of the body sheets.

l1.--'As"an improved article of manufacture,

acomposite sheet comprising superposed pliable body sheetsunited and adhesively secured together at their opposed surfaces by an adhesive compound. and having longitudinal flat reinforcing tape strips extending intermediately of said body sheets and in strips positioned intermediately of said edge y strips and having a width area greater than that of said edge strips.

In testimony whereof foregoing specification.

v MAURICE BLUMENTHAL.,

I have signed the

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