US139607A - Improvement in fire-proof roofs - Google Patents

Description

UNITED STATES NIELs PoULsoN, 0F NEW, YORK, N.=Y.

IMPROVEMENT |N FIRE-PROOF RooFs.

Specification forming part of Letters Patent No. 139,607, dated J une 3, 1873; application filed February 15, 1873.

To all uhom it may concern:

Beit known that I, NIELS POULSON, of the city, county, and State of New York, have invented a new and Improved Fire-Proof French Roof, of which the following is a speciiication: y y

Figure l is a frontview of my tire-proof French roof. Fig. 2 isfa vertical transverse section of the same onthe line c 0,'Fig. 1.

Fig. 3 is a rear view, showing arrangement of plastering; and Fig. 4 a horizontal section on the line x m, Fig. 2.

Similar letters of reference indicate corresponding parts. y

The object of my invention is to construct a strong, durable, and lire-proof French roof of cast metal, for the purpose of avoiding the combustible material of which they a-re built at present, so that the re is communicated too rapidly from house to house, and discredit brought on the system of French roofs. The ornamental features of the same may thereby bepreserved, and at the same time full protectionlagainst the spread of lire rendered.

My invention consists of cast-iron plates of suitable size, joined-firmly together by means of outside ribs or caps and interior bolt arrangement, representing an elegant front, impervious to atmospheric influences and absolutely fire-proof.

In the drawing, A represents the plates, forming the `principal part of the roof, made by preference of cast-iron, of suitable dimensions. They maybe cast on their outward side with ornaments corresponding to the style of architecture in which the building is designed, or in imitation of the plainer slate rooting, as indicated in Fig. l. Each plate A is provided at the sides with longitudinal projectingfronttlanges a, and rear'flan ges b, which latter extend somewhat further back than those at the front, so as to carry the wiregauze and plastering at proper distance from plates A. Should plates A be of larger width,

so that the wire-gauzestretched between the flanges is not suiciently rigid to receive the plaster, it may be desirable to. cast intermediate lugs d. at regular intervals, so as to better support the plastering. Plates A are connected with the cornice andV gutter-pieces, braced, and are supported in the customary manner. Longitudinal ribs or cappings B` embrace the outer flanges a, at the joints of plates A, and have cast at their inner sides at y ably, with putty, paper,felting, `or any other pulpy, absorptive material, care being always taken that proper space for the expansion of the dili'erent parts is provided. .A net-work of coarse wiregauze, G, is stretched between the flanges b, and held in position by being placed between the washer-clamps g and nuts h; also, if necessary, by supporting-lugs d and hooks t' placed therein, Fig. 4. 'lhe plastering is spread over the wire-gauze in suilicient thickness. The in and outsides Aof plates A are coated with suitable paint, as protection against the` weather.

Having thus describedmy invention, I l

claim as new and desire to secure by Letters'Patenti Plates A, having front and rear anges a andwb, held in connection with ribs B and y wire-gauze C by means of lugs e, bolts f,

washer-clamp g, and nutsh, forming the reproof French root, substantially as described.

NIELS POULSON.

Witnesses:

PAUL GOEPLE, T. B. MosHER.

Images