US77177A - Chables de hass - Google Patents

Description

COMING on PLAsnc. cross Ramen@ 4CHARLES DE HSS, OF `WASHINGTO-N CITY, DISTRICTF CLUMB-IA.

Letters Patent No. 77,177, dated April l 28, 1868.

IMPROVD MODE 0F ROOFING BUILDINGS.

i @te tiphnlt tefertmtu in igrst btttrs ttent nnh'nmhing @art nf tige same.

TO ALL WHOM ITMAY CONCERN:

Be it known that I, CHARLES DE HASS, of the city of Washington, and District of Columbia, haveinvented a new Mode of Roofing Buildings, termed the Concrete Roong; and do hereby declarethat'th'e following is a full and exact description thereof, reference being had to the accompanying draught of the same.'

Vthe preparation of the roof ofthe building, and the ingredients used in compounding the'oncrete for the rooiingmaterial, and the application of the same to the roof of the building.

for shingles. O'n this sheeting, rolled iron rails, of the T-form, half an inch high, are inversely nailed, running from top to bottom of the roof, two and a half feetV usunder. These rails are designed for the double purpose oiiholding theconcrete in its position, and to enable the operator to give a uniformthickness tothe roof.

, -|i cement and limghsllghtly moistened with water, heated, and thoroughly mixed.

of spreading mortar, between the two rst set of rails, filling the entire space between and to the top of the rails, and at the same instant compactly rolling the concrete with a heavy iron roller. This operation is to be performed speedily on the remaining sections, as' the concrete hardens very rapidly.

, purpose of making the roof still more impervious to water.

What I claim as my invention, and desire to securebyLetter's Patent, is-

A roof, constructed as herein described. l I v' Witnesses T. DRURY,

JOHN DEWDNE.

e c CHARLES DE HAss.

To enable others4 skilled in the art to make and use my invention in roofing buildings; I proceed to describe 'l The roof` of the building is arranged in the ordinary manner, and. slieetcd with inch plank, similar to that The concrete roofing-material 'n composed of three parts of clear, sha1-p sand and one part each of hvdl'aulic After the preparationof thenconcrete as indicated, it is to be spread by thc operator, in the ordinary manner A thin'nishing-coat is now applied, composed of equal parte of clear, fine sand and :isp: haltum,for the-

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