73,055.--MACHINE FOR FORMING AND TEMPERING ELLIPTIC SPRINGS.--Geo. S. Long, Bridgeport, Ct.
I claim, 1st, A steel spring former, substantially as shown and described, and for the purposes set forth.
2d, The vibrating rod, B, and shoe, f', and any former, F, in combination with the slotted wheel, W, and roller, W', substantially as shown and described, and for the purpose set forth.
3d, The hollow shaft, s', and roller, W, in combination with the binder or presser, D, substantially as shown and described, and for the purposes set forth.
4th, The sliding crank pin, p, in combination with the slotted wheel, W, and slotted vibrating rod, B, substantially as shown and described, and for the purposes set forth.
72,056.--FURNACE FOR HOT AIR BLAST.--Richard Long, Chillicothe, Ohio.
I claim, 1st, Constructing the air pipe of a furnace-blast heater of fire clay, substantially as described.
2d, Constructing the air pipe of an oval or other equivalent form, and uniting the sections of which it is composed by socket joints, with clumps and keys, substantially as shown and described.
3d, Forming the supporting walls, B, of firebrick, with iron plates between the courses, substantially as shown and described,
4th, Placing an open or a solid plate beneath the air pipe, substantially as and for the purposes herein described.