Eighty-seventh, to L. Otto P. Meyer, February 28, 1854. For improvement in vulcanizing India-rubber and other gums.
The invention or claim consists in the heating or curing of the material commonly known as the hard compound of vulcanized caoutchouc, or other vulcanizable gums, by means of the immersion of the material in, or under water, or other suitable liquid, heated to about 300° Fah., daring the process of curing.
Eighty-eighth, to Ellsworth D. S. Goodyear, assignor to the New York Rubber Company, March 28, 1854. For improvement in processes for treating India-rubber.
The improvement refers to the manufacture of hollow articles from India-rubber, and consists in filling such ware, as balls, &c., to a certain extent, with water, which being, during the process of vulcanization, converted into steam, exercises the necessary inside pressure to impart any desired pattern to the exterior face of the article.
Claim.—The introduction of water or any other liquid into the interior of articles which require expansive force for their perfect formation against the interior surface of moulds, said liquid to be converted into steam, substantially as, and for the purposes, specified.
Eighty-ninth, to L. Otto P. Meyer, April 4, 1854. For improvement in treating caoutchouc and other vulcanizable gums.
The interposing between sheets of gum, &c., to be cured, sheets of flexible material, when the series of sheets thus piled are confined between plates of iron during the process of vulcanization, being disclaimed, the improvement and claim are restricted to covering the surface of what is known as the hard compound of caoutchouc with tin foil, or other equivalent substances, to preserve the form previously given by embossing or moulding, the contact of the tin foil during the curing process having the effect to preserve the form and the surface without pressure or moulds.
Ninetieth, to Julius A. Pease, November 14, 1854. For improvement in over-shoes.
The claim explains the character of this invention, by reference to the accompanying figure. A. represents the ribs, and B. the depressions between them.
Claim.—Making India-rubber or gum shoes with the inner surface ribbed, corrugated, or otherwise made uneven, for the purpose of allowing a circulation of air between it and the boot or shoe over which it is worn; and this, whether it be effected in the precise manner stated, or by lining the shoe with a similar ribbed, corrugated, or otherwise raised and depressed surfaced fabric, as described.