USRE1471E - Improved cement for uniting leather and other substances - Google Patents

Description

atmosphere.

UNITED STATES PATENT OFFIcE.

SAML. F. HILTON, on PROVIDENCE, AND WM. D. HILTON, OF ORANSTON, I

RHODE ISLAND, ASSIGNEES 0F SAID SAMUEL F. HILTON.

j IMPROVED CEMENT FOR UNITING LEATH ER AND OTHER SUBSTANCES.

Specification forming part .of Letters Patent No. 33,065, dated August 13, 1861; Reissue No. 1,4 71, dated May 5, 1863. 7

To all whom it may concern.-

Be it known thatwe, SAMUEL F. HILTON, of the city and county of Providence, in the Stateof Rhode Island, did invent a new and useful Cement for Various Purposes; and we do hereby declare that the following specification is a full and complete description thereof. L r

The invention consists in the discovery that when that peculiar astringent principle of vegetables which is known by the name of tannin, and which is the agent by which animal skin is converted into leather, is com- I bined with that principle found in the tendons, ligaments, cartilage, and bones of animals, and in the sounds of fish, which is known under the name of gelatine, the result will be, after a process of manufacture here inafter described, an adhesive cement which is perfectly insoluble in either water or oil.

For the purpose of enabling others to compound the article, we will state the proportions of each element-Which can most advantageously be employed and the process of combining them.

Take three pound of tannin. about one wine-gallon of water at a temperature of 212 of Fahrenheit. Dissolve in a separate vessel the tannin in one-half a gallon of alcohol at the ordinary temperature of the Next, throw the two solutions together and suffer them to stand until cold, when it will be found that the tannin andgelatine have combined in the form of a thick viscid precipitate. The massshould then be pounds of gelatine and one heated over a'slow fire to the temperature of about 106 Fahrenheit until the water and alcohol have become separated from the combined tannin and gelatine and been thrown ofi' by evaporation. This latter process, whic should be accompanied with agitation of the mass, by stirring, in addition to effecting aseparation ,of the solvents from the respective elements, modifies the character of-the compo sition itself, and thoroughly effects the combination of the elements. If a more complete union of the elementsis thought advisable, add to the mixture, after the last-described Dissolve the former in.

process, one pound of vinegar and onepound results. I

The cement which it is thus enabled to produce has been found superior to any other composition for uniting leather belting or strips of leather together. As it is periectly adapted for belts or bands which are to be used in a moist'or damp place, and for securing together the pieces of leather which compose the entire sole of a boot or shoe.

the boiling-point; then spread the composition upon the surfaces to be united and confine them under pressure until the cement has become cold.

We wish it to be distinctly understood that the invention which is the subject of this patent does not consist in the use of the precise formula above given, nor in the particular method are made to combine together, inasmuch as tannin and gelatine may be dissolved by various other agents than those described, and may be combined in other proportions, so as to produce a composition of matter of substantiallythe same chemical character, and possessing similar useful qualities to those which distinguish this invention.

What we do claim as the invention, and destantially as described.-

SAML. F. HILTON, WM. 1). HILTON.

Witn esses:

BENJ. F. THURSTON,

THos. H. PEABoDY.

of alcohol for-every two pounds of the 'comscribed has not been attended with the best insoluble in either water or oil, it is especially The best method of applying the cement is e 'to place it in a suitable vessel and raise it to by which the elements composing the cement sire to secure by Letters. Patent as a new artitofore first mentioned in combination, sub-