US664609A - Safety-match. - Google Patents

Description

UNITED STATES QEe CHARLES- HA SLWANTER, JR., OF NEW YORK, N. Y., ASSIGNOR T0 HARWOOD HUNTINGTON, OF SAME, PLACE.

SAFETY-MATCH.

SPECIFICATION forming part of Letters Patent No. 664,609, dated December 25, 1900. Application filed July 14, 1899 Serial No. 723,863. (Nospecimena) To all whom it riuty concern:

- Be it known that I, CHARLES HASLWANTER, Jr., acitizen of the United States, and a resident of New York, (Brooklyn,) Kings county, State of New York, have invented new and useful Improvements in the Manufacture-of Matches, of which the following is a specification.

This invention relates to improvements in headless safety-matches free from phosphorus and which are intended to ignite by striking against a suitably-prepared surface.

There have been for years attempts made to produce a non-hygroscopic match which will not be injuriously affected by hygrometric changes in the atmosphere, and the match herewith brought forward possesses the desirable antihygrometric properties to a high degree.

In my invention I use barium hydroxid with alkali or alkaline-earth chlorates. I impregnate several times,preferabiy in hot solutions,..drying either partially or wholly between the impregnatings. The barium hydroxid and the chlorate used must be suflicien tly pure to avoid hygroscopicity byreason of impurities. When barium hydroxid and the chlorate of potassium are used, I have found that the following proportions work advantageously, although I do not limit myself to the proportions slated precisely: twentythree (23) parts of chlorate of potassium, one and one-half (1%) parts of barium hydroxid, and one hundred (100') parts of water. The parts given are by weight. The solution is used hot, a temperature of about ninety degrees (90) centigrade being employed, The splints or match ends may be dried previous to the first impregnation. After the splints or match ends have been dipped in the mixture of chlorate and barium hydroxid the splints or match ends a re dried either partially or wholly at a temperature preferably between forty-live (45) and fifty-five degrees (55) cent-igrade, The splints or match ends are then'dippcd again in the mixture of the chlorate and the barium hydroxid and dried again either wholly or partially. I find that it is advantageous to repeat this dipping or l impregnating several times, so that enough of the material 'isintroduced into the points of the splints or match ends. Either or both ends of the splints or match ends may be dipped and impregnated.- TlIe\ splints or match ends may also be dipped in parafiin or similar substances, which act as fiame-car-- riers or fiame-continuers. The splints or match ends may now be covered with a varnish, so that the crystals on the exterior of I the surface of the splints or match ends may not be rubbed 011* in the later processes of my invention, to form a cover to protect from attrition or rubbing on. The varnish may be put on, preferably, by spraying, and I use a solvent which will not dissolve the chemicals already'in the match end. I dissolve the rosin used inpetr'oleum spirit one (1) part of resin to four (4.) parts of the solvent. The splints or match ends are lastly dried again and a temperature of about ninety (90) degrees centigrade is desirable. I do not limit myself to the proportions and temperatures given in the above examples; but I have found them to be advantageous and will enable any one skilled in the art to produce the match.-

Having now described my invention and the manner in which the same can be performed and the product obtained thereby, what I claim, and desire to protect by Letters Patent, is

A headless safety-match impregnated with barium hydroxid and chlorates' substantially as described.

In testimony that I claim the foregoing as my invention I have signed my name, in the presence of two witnesses, this 27th day of March, 1900.

CHARLES l-IASLWANTER, JR.

Witnesses: V

SIMEON B. CHITTENDEN, HARWOOD HUNTINGTON.