India rubber world . the extraction of Caout-chouc from plants. 349,295 (Dec. 10). F. Woodgates. Material for repairing pneumatictires. 34Qi33 (Dec. 23). P. Prache. Truncated elastic washer and its ap-plication for deadening vibration, in vehicle wheels. 349 338 (Dec. 23). A. Catala. Pneumatic tire. 349,363 (Dec, 15). de Fleury. Ilydro-pneumatic tire. [NoTB.—Printed copies of specifications of French patents may be obtainedfrom R. Bobet, Ingenieur-Counseil, iC avenue de Villiers, Paris, at 50 cents each,post paid.) RUBBER CEMENT CANS. A DEVICE which apparently should possess an interest lorman
India rubber world . the extraction of Caout-chouc from plants. 349,295 (Dec. 10). F. Woodgates. Material for repairing pneumatictires. 34Qi33 (Dec. 23). P. Prache. Truncated elastic washer and its ap-plication for deadening vibration, in vehicle wheels. 349 338 (Dec. 23). A. Catala. Pneumatic tire. 349,363 (Dec, 15). de Fleury. Ilydro-pneumatic tire. [NoTB.—Printed copies of specifications of French patents may be obtainedfrom R. Bobet, Ingenieur-Counseil, iC avenue de Villiers, Paris, at 50 cents each,post paid.) RUBBER CEMENT CANS. A DEVICE which apparently should possess an interest lormany branches of the rubber industry is the patentedcement pail used in leather shoe factories for applying rubbercements, great quantities of which are used for shoe channel-ling, and to the manufacture of which several large plants aredevoted. The practice of carrying cements in ordinary tin re-ceptacles is not only wasteful, but is more or less dangerous,because of their evaporative and inflammable nature. A fire-. KRIEQ CEMENT CAN. proof and non-evaporating cement can made by the J. K. KriegCo. (New York) is referred to as affording a safe and mosteconomical method of keeping cement. This can is made ofcast iron and has a mouth fitted with a cover of iron, intowhich the cement flows almost steadily, thereby preventingthe accumulation of dirt and sediment, and obviating the ten-dency to harden. This can is fitted with a receptacle for waterin which the brush may bekept soft when not in is made in i gallon and3 quart sizes. Another ce-ment can of a new and de-sirable type, and already inwide request, is that manu-factured by the Ross-MoyerCo. (Cincinnati). It is sodesigned that the orificpfrom which the cement istaken by the brush, whilesufficiently large for thepurpose, offers only a verysmall surface (or evapora-tion, and when not in use the opening is closed by means ofa clamp, which renders evaporation or ignition can is made in three sizes, holding
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