Compressed air . A housing, a hammer mounted therein andprovided with exterior screw-threads, a slidably-mounted hinged block having screw-threaded en-gagement with said hammer, spring-pressed plun-gers located at opposite ends of said block forcushioning the movements of the same, meansfor adjusting the tension of the springs of saidplungers, and means for turning said hammer. 808,974. PROTECTOR FOR PNEUMATICTIRES. Henri David, Paris, France. FiledJan. 20, 1904. Serial No. 189,856. 808,903. AUTOPNEUMATIC MUSICAL IN-STRUMENT. Walter Crippen, New York,N. Y., assignor to Wilcox &• White Company.


Compressed air . A housing, a hammer mounted therein andprovided with exterior screw-threads, a slidably-mounted hinged block having screw-threaded en-gagement with said hammer, spring-pressed plun-gers located at opposite ends of said block forcushioning the movements of the same, meansfor adjusting the tension of the springs of saidplungers, and means for turning said hammer. 808,974. PROTECTOR FOR PNEUMATICTIRES. Henri David, Paris, France. FiledJan. 20, 1904. Serial No. 189,856. 808,903. AUTOPNEUMATIC MUSICAL IN-STRUMENT. Walter Crippen, New York,N. Y., assignor to Wilcox &• White , Conn., a Corporation of June 5, 1905. Serial No. 263,710. 809,083. AUTOMATIC ELECTRICAL CON-TROLLER FOR AIR-COMPRESSORS. FredD. Ackerman. Kendallville. Ind. Filed May 17. 1905. Serial No. 260, The improved automatic controller for the pur-pose specified, comprising a valve-chest and valve,an air-cylinder and a slidable piston containedtherein and connected with said valve, a springfor opposing the movement of the piston in onediiection, a second air-cylinder having a spring-pressed piston, an air conductor connecting suchsecond cylinder with the valve-chest, a slidablebar connected with the last-named piston, a cas-ing supplied to and slidable on said bar, a springcontained within the said casing and applyingpressure between it and the bar, an electricalswitch one member of which is connected withthe casing, and spring locking and release mechan-ism connected with the casing for holding it nor- COMPRESSED AIR. 3972 mally immovable and the switch normally closeduntil a ctrtain predetermined air-pressure isaccumulated. MINIXG-M.\CHINE. Daniel R. Mur-phy, Scenery Hill, Pa., assignor to Joseph .\.Jeffrey. Columbus, Ohio. Filed Feb. 20, No. 194,586. The comb


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Keywords: ., bookcentury1800, bookdecade1890, booksubjectcompres, bookyear1896