2d, The combination of the semi-circular rubber, C, slotted arms, g, shaft, D, slotted cross-bar, E, spirally grooved rollers, d, in the curved frames, B, the spring, G, and rack, H, as herein described for the purpose specified. 72,113.--PORTABLE FENCE.--G. D. Sweigert, Martic township, Pa., assignor to himself, John Sweigert and Felix W. Sweigert. I claim a portable fence, combined of round wrought-iron posts, C, bed-plate, A, rails, B, scarfed, and applied with intervening ferrules, D, head and bottom washers, F, all arranged in the manner and for the purpose specified. 72,114.--VARIABLE CRANK FOR BORING MACHINE.--G. C. Taft, Worcester, Mass., assignor to Theodore Mace, Sing Sing, N.Y. I claim the two variable cranks, constructed as specified, and applied in the manner shown, to the shaft or axis of the boring machine, as and for the purposes set forth. 72,115.--ROTARY TAKE-UP FOR KNITTING MACHINE.--James Teachout, Waterford, N.Y. I claim, 1st, The stationary scroll plate, C, placed over the center of motion of take-up of knitting machines, for the purpose described. 2d, Also, in combination with the scroll plate, C, the toothed gear, D, for the purpose herein set forth. 3d, Also, the toothed wheel, D, or its equivalent, either separately, or combined with the described appendages e i g i K, arranged as shown and described as operating substantially in the manner and for the purpose specified. 4th, Also, in combination with the above, the adjustable gear, s, and concentric gears, s', for the purpose described. 72,116.--KNITTING MACHINE.--James Teachout, Waterford, N.Y. I claim 1st, Forming the "jacks" or loop-lifters, B, with a projecting are, f, and depressed arc, g, for the purposes set forth. 2d, n combination with the arc, f, and arch, g, the rounded end, as shown and described. 3d, In combination with the described knitting jacks, a retaining hub or device, constructed and arranged as shown and described. 72117,--KNITTING MACHINE--James Teachout, Waterford, N.Y. I claim, 1st, The vertically adjustable collars or rings, G and H, for the purposes described. 2d, In combination with the collars, G and H, the partitions or wings, k, and groove, l, as set forth. 3d, In combination with the adjustable collars, G and H, wings, k, and groove, l, the "jacks" or lifters, M, formed as shown and described, for the purpose specified. 72,118.--MANUFACTURING ILLUMINATING GAS.--J. B. Terry, Hartford, Conn. I claim, 1st, The method herein described of heating air charged with hydrocarbon vapor, so as to render it non-condensable previous to its delivery as an illuminating gas, for the purposes set forth. 2d, The employment of a retort or other heating medium interposed between the carbureter and gas holder or other gas-delivering or gas-burning device, substantially as and for the purposes set forth.