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rms patented in the United States. [The star (*) designates magazine-guns.] class A. — barrels moving with relation to the stock or breech. 1. Sliding Longitudinally Forward. No.Name.Date. 8,690C. V. NickersonJan. 27, 1852. 14,253Robertson and SimpsonFeb. 12, 1856. 16,288Schroeder, Salewski, and SchmidtDec. 23, 1856. 17,644G. SmithJune 23, 1857. 17,915T. BuckmanAug. 4, 1857. 23,505T. E. ShullApr. 5, 1859. 24,437T. BaileyJune 14, 1859. 24,936A. V. HillAug 2, 1859. 28,460W. lynJune 20, 1865. *49,409Hughes and BuseyAug. 15, 1865. 49,994Foster and FosterSept. 19, 1865. 50,507J. StillmanOct. 17, 1865. 51,739W. H. and G. W. MillerDec. 26, 1865. 51,991H. BerdanJan. 9, 1866. *52,547W. C. DodgeFeb. 13, 1866. 53,187Robertson and SimpsonMar. 13, 1866. 53,543J. RiderMar. 27, 1866. *54,068J. GrayApr. 17, 1866. 2. (c.) Hinged beneath Barrel, etc.—Continued. No.Name.Date. 54,100C. E. BillingsApr. 24, 1866. 54,743Laidley and EmeryMay. 15, 1866. 56,399G.
elatine with other less essential chemicals, and exposed under a transparent positive. By plunging this, after exposure, into water, the unaltered gelatine swells into relief, forming a surface which may be copied by the galvanoplastic or stereotype process to form a relief-printing process. Also known as a photo-Galvanograph (which see). Poitevin, December 13, 1855, had a process substantially similar, using plaster hardened with protosulphate of iron to obtain a cast. Osborne and Robertson, in 1860, transferred the photolitho- graphic transfer-sheet to zinc and etched the zinc to make a relief. Leggo, about 1866, coated the back of a transparent positive with gelatine and bichromate, allowing it to gelatinize only, not to dry, exposed from the face, and finally washed away the unaltered gelatine, leaving a number of depressions, corresponding to the positive parts of the picture. A casting was made from this in the electro-bath or by stereotype. Woodbury's process, t
79,808 BryantNo. 79.809 BryantNo. 86,356 RobertsonNo. 101,044 PutnamNo. 104,352 ShortNo. 116,er operated by Needle. No.Name.Date. 12,923RobertsonMay 22, 1855. 18,285Jenks et al.Sept. 29, 181,299JacksonAug. 24, 1858. (Reissue.)599RobertsonSept. 14, 1858. 21,833HubbardOct. 19, 1858. 17,186AtwaterMay 5, 1857. (Reissue.)560RobertsonMay 18, 1858. 21,402AtwaterSept. 7, 1858. 211, 1859. 25,876BarnesOct. 25, 1859. 25,913RobertsonOct. 25, 1859. 25,963Fosket et al.Nov. 1, 186, 1855. 13,616HarrisonOct. 2, 1855. 18,470RobertsonOct. 20, 1857. (Reissue.) Cloth. (continued). No.Name.Date. 12,577RobertsonMar. 20, 1855. (Reissue.)343RobertsonJanRobertsonJan. 15, 1856. 16,850RobertsonMar. 17, 1857. 18,566AndrewsNov. 3, 1857. 19,171BoydJan. 19, 1858. 2raiders. 12,014BoyntonNov. 28, 1854. 26,205RobertsonNov. 22, 1859. 36,847MaddockNov. 4, 1862. 4rature and direction of deepsea currents. Robertson's excavating-machine. Storm's submarine [8 more...]
f a mowing or reaping machine to draw the grain toward the cutter and leave a clear track for the grain-wheel in the next round. Track-clearer for mowing-machines. Track-har′ness. (Saddlery.) A breast-collar single harness, made up in the lightest and plainest manner. Track-lay′er. (Railroad-engineering.) A carriage provided with apparatus for placing the rails in their proper positions on the track as the machine advances over a portion of the track already laid down. Robertson's patent, No. 82,350. Track-lifter. Track-rail. (Railroad-engineering.) A rail for the tread of the wheel, in contradistinction to a guard-rail, for instance. See rail. Rail-jack. Track-rais′er. A lifting-jack for raising rails which have become sprung below the proper level. Fig. 6585 is a screwjack on a tripod, used for this purpose, the hook being placed beneath the rail and the screw rotated by the handspike. Fig. 6586 is a tracklifter in which the fram