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The Sun's Guide to New York · 1892 Home > Prism Glass > United States > Jacob Mark > Sun's Guide 1892 |
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Up: Jacob Mark |
The Sun's Guide to New York · 1892 Home > Prism Glass > United States > Jacob Mark > Sun's Guide 1892 |
Paper: 2 of 3 |
 The Sun's Guide to New York · 1892 JACOB MARK,
7 Worth Street, New York,
MANUFACTURER AND PATENTEE OF Concrete Illuminating Tile and Vault Lights,
FOR AREAS, ROOFS, FLOORS, ETC. JOHN W. MARK'S SQUARE OPENING CONCRETE LIGHT. Patented Sept. 9th, 1890.While improving the strength of the Concrete Illuminating Tile, we have succeeded in producing more lighting surface to a square foot than ever before produced, and at the same time placed before the public a Concrete Vault Light work that cannot be improved upon in any shape or manner, as we have experimented not only with the problems of strength and durability, but also with effect, for no other work of a similar kind can present the same neat and perfect appearance as produced by our New Ring Concrete and our Square Opening Concrete work. The increase in the light is shown here:
An increase of over 50 per cent. above the old style of concrete work.
The advantage of our Prismatic Lenses above those in use is very apparent.
They economize space, with a greatly improved light, as they distribute
the light horizontally and diagonally, and are very easily cleaned.
Very few use any other kind; in fact, inventors
of prismatic lenses have laid their inventions aside, and now use but one
kind—and that is our improvement.
The Sheet Iron Illuminating Doors that we
manufacture are the most durable and the best illuminating sidewalk doors
on the market. Light to handle, heavy to wear, and neat in appearance,
it has greater sale than any other kind manufactured.
Upon application, we will send our illustrated
catalogue, in which there is a more pointed description, with illustrations
of every kind of work manufactured by us.
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