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first through the material back from the slit, and then through the slit, or else a thread may be carried from the under side up over the edge of the material, and be locked by the needle in its next descent. The needle may be made to descend through the material and through the slit, by moving the material laterally, as well as forward by the feed, as in patent to Miller, March 7, 1854; or the needle-carrying box may be moved laterally after each stitch, by means of a cam, as in patent to Humphrey, October 7, 1862. The needlethread is locked at each descent by a second thread carried by either a looper or a shuttle. In patent to Sleiner, June 19, 1860, the needle and shuttle operate as in an ordinary machine, but after the shuttle has passed through the loop of needle-thread, a hook catches its thread and passes it in the form of a loop up through the button-hole slit and spreads it in the path of, and the needle enters it at its next descent. In patent to Rehfuss, May 23, 1865,
Neale.u, Hoe. I, Emerson.v, Strange. j, Brown.w, Humphrey. k, Clemson.x, Miller. l, Woodruff.y, Disston. 861. 34,748Deroquigny et al.Mar. 25, 1862. 36,617HumphreyOct. 7, 1862. 36,932HouseNov. 11, 1862. 37,931Wei 2. Two Thread. (continued). No.Name.Date. 49,627HumphreyAug. 29, 1865. 49,745FreySept. 5, 1865. 49,803TarboxSept. 5, 1865. 50,253HumphreyOct. 3, 1865. 50,299CajarOct. 3, 1865. 50,870BartramNov. 7, 1865. 51,086Rean. 31, 1871. 115,163ChickenMay 23, 1871. 115,857HumphreyJune 13, 1871. 120,855Chicken et al.Nov. 14, 1871. 123,348HumphreyFeb. 6, 1872. 124,252ChickenMar. 5, 1872. 125,394HumphreyApr. 9, 1872. 127,675BraunbeckJunHumphreyApr. 9, 1872. 127,675BraunbeckJune 11, 1872. 2. Two Thread. (continued). No.Name.Date. 132,968LangmaidNov. 12, 1872. 134,558MoreauJan. 7,ay 26, 1874. 152,055WensleyJune 16, 1874. 152,231HumphreyJune 23, 1874. 159,740BairdFeb. 16, 1875. 3. Attapr. 24, 1860. 34,454WeitlingFeb. 18, 1862. 36,616HumphreyOct. 7, 1862. 39,658JewettAug. 25, 1863. 46,133Pa
Trunk-roll′er. A roller journaled in a plate which may be attached to the bottom of a trunk of the like. See trunk-caster. Trunk-stay. See trunk-brace. Trunk steam-en′gine. The trunk steamen-gine was so named by its inventor, Humphrey, 1835. It is designed to obtain the direct connection of the piston-rod with the crank without the intervention of a beam or oscillating the cylinder. Attached to the piston is a tube or trunk, which is packed in the cylinder-heads, and has suor marine and propeller engines. The trunk-engine differs from the annular cylinder steamengine in the regard that the piston of the latter moves in the spare between fixed outer and inner cylinders. See annular cylinder steam-engine. In Humphrey's trunkengine, a is the cylinder; b, the piston; c, the connecting rod, the upper end of which is connected to the crank d, and the lower end passes through an aperture in the piston, and carries a pin e, the ends of which work in bearings attac
ing. A cock g serves to empty the trough. Seib's veneer-cutter. Ve-neer′--cut′ter. Fig. 6939 is the Seib veneer- cutter; the veneer is cut from a semicylindrical log. Fig. 6940 is another form, in which it is cut from a cylindrical log, making a continuous veneer, as in some other of the machines illustrated. Seib's veneer-cutter. Ve-neer′--cut′ting ma-chine′. A machine for cutting veneers from the log or block; as distinct from sawing. Veneer-cutting machine. In Humphrey's machine (Fig. 6941), the cutter, a long thin blade the whole width of the veneer to be cut, is slightly inclined from the perpendicular. The block is first turned to a cylindrical form, and is clamped so as to receive a rotary motion. A presser-roller acts against the wood in advance of the knife and removes the veneer. The knife is secured to a carriage, which has a progressive forward motion toward the center of the block, and cuts a continuous veneer. The distance between the ro