US652971A - Paint for ships' bottoms. - Google Patents

Description

Flt- 8501 ployed expensive.

X m t) ENT OFFICE.

HARRY LOUDERBOUGH, OF JERSEY CITY, NEW JERSEY.

PAINT FOR SHI PS BOTTOMS.

- SPECIFICATION forming part of Letters Patent No. 652, 7 dated y 3, 1900- Application filed September 9, 1899.

To all whom it may concern.-

Be it known that I, HARRY LOUDERBOUGH, a citizen of the United States of America, residing at Jersey City, Hudson count-y, New Jersey, have invented certain new and useful Improvements in Antifouling-Paints, of which the following is a specification.

My invention relates to antifouling-paints for marine use.

Heretofore antifouling-paints have been used wherein copper constituted an essential ingredient of the paint; but many disadvantages were presented to the use of such paint. .Thus, for instance, paint in which copper enters as an element cannot be used upon the bot-toms of iron vessels, because of the liability of the paint to attack and corrode the iron, and if the paint is used upon wooden vessels it will corrode and destroy the iron bolts or fastenings. Furthermore, the use of copper renders the paint in which it is em- The object of my invention is to overcome the disadvantages above pointed out and to provide a cheap and efiicient antifoulingpaint for marine use which may be applied to either iron or wooden structuressuch as the iron or wooden bottom of ships, to docks, &c.withont injury thereto and which will preserve such structures from the encroachmentsof barnaole and vegetable growth and the teredo worm, so destructive to wooden structures.

To-these endsmy invention consists of paint of the character to be hereinafter described and claimed.

In making an antifouling-paint in accordance with my invention I preferably employ to eachgallon'of the paint to be made three quarters of a gallon of a suitable vehicle, five pounds of a metallic antimony, and one and one-half pounds of a suitable metallic dry paint or pigment. The vehicle which I prefer to use consists of forty per cent. pine-tar, forty per cent. benzin, 'ten per cent. kidney-oil,

Serial No. 729,898. (No specimens.)

and ten per cent. rosin. The metallic dry paint or pigment preferably consists of forty pei' cent. metallic iron, fifty-five per cent. silica, and five per cent. metallic aluminium.

1 e substances or their equivalents are mixed with the metallic antimony in substantially the proportions specified, though obviously the proportions may be varied in accordance with the differences in condition and materials of the surfaces treated, though ordinarily I prefer to use the substances in the proportions stated.

A great advantage of the paint made in accordance with my invention other than those above enumerated is that it has great tenacity and can be applied to the bottoms of vessels, whether the same be wet or dry, and the vessels after having been coated with the paint can, without liability of injury to the paint, be immediately placed back into the water. Furthermore, the paint herein described can be made at about one-half the cost of the ordinary antifonling copper paint which is now in general use. It will thus be seen that paint made in accordance with my invention possesses many meritorious advantages over the copper paints heretofore employed.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. An antifouling-paint comprising pinetar, benzin, kidney-oil, rosin, a suitable metallic pigment, and antimony in substantially the proportions specified.

2. An antifouling-paint comprising a vehicle, iron, silica, aluminium and antimony in substantially the proportions specified.

3. An antifouling-paint comprising pine-.

tar, benzin, kidney-oil, rosin, iron, silica, aluminium and antimony in substantiafihe proportions specified.

HARRY LOUDERBOUGH.

Witnesses:

CHARLES E. SMITH. J OHANNA M. STROPP.