Patent GB-191517786-A (GB)
Title: Improvements in and relating to Machines for Coping Beams.
IPC: B23D21/00
Filed: 1915-12-20
Abstract: 17,786. Marks, E. C. R., [Steel Utilities, Incorporated]. Dec. 20. Rolling; cutting girders; shear - blades.- In a machine for coping or cutting beams the work x is fed intermittently through the machine on rollers, and while at rest the end portions of the flanges are cut and the web trimmed at one or both sides by reciprocating cutters 31, 35 co-operating with stationary cutters 25, 27. The cutters for one side are mounted in a fixed head 11, and those for the other side in a movable head 15. The heads are divided horizontally to provide for the passage of the beam, and are relatively adjusted for various sizes of beam by means of sleeves 20, 21, each provided with external right and left handed screws engaging screw-threaded apertures in the heads. The sleeves are splined on reciprocable and rotatable shafts 41, 42, so that when these shafts are rotated as by means of a wheel 68, the head 15 moves to or from the head 11. Screwed portions of the shafts, engaging screwed apertures in a cross-head 64 connected to the cutter carriers in the head 15, move the cross-head proportionately to the movement of the head. In the upper part 13 of the head 11 is a reciprocable carrier 30 for a cutter 31 co-operating with a stationary cutter 25 and provided with cutting-edges to cut the upper flange vertically and horizontally, and with an horizontal edge for trimming the web. The cutter 31 is preferably given a slant to effect a shearing-cut. A reciprocable corner 35<b> in the lower part 14 of the head 11 carries a cutter 35 co-operating with a fixed cut 27 and provided with edges to cut the flange vertically and horizontally and trim the web. The cutter 31 is in advance of the cutter 35, so that the cutting of the upper flange precedes the cutting of the lower one. For cutting the web, the cutter 35 is adapted to be reciprocated vertically in the carrier 35<b> by means of a bar 90 and a cam rotatable with, but slidable on, a shaft 92 controlled by a one-revolution clutch. The head 15 has a similar set of cutters for the other side of the beam. The cutter-carriers 30, 35<b> are reciprocated by a crank-shaft 72 controlled by a one-revolution clutch and connected to a cross-head 40, in which are rotatably mounted shafts 41, 42 arranged to reciprocate with the cross-head. The shafts 41, 42 pass through, and are splined to, sleeves 20, 21, and engage by screw-threated portions a cross-head 64 connected to the opposite carriers. Thus, when the cutters on one side are in operation, the cutters on the opposite side are moving away from the beam. The cross-heads are connected to the carriers by wedges or gags 46, 46<c> slidably mounted in the cross-heads and carriers, so that by moving these wedges, one or both cutters on cither side may be thrown into or out of operation. The beam is positioned transversely by a guide-rail and longitudinally by an adjustable stop. Two relatively adjustable machines may be used for coping both ends of beams of various sizes. The frame carrying the feeding-rolls may be vertically adjusted relatively to the cutters, in order to centre beams of various sizes. In the plant shown in Fig. 17, the beams are fed from the rolling-mill along a path 140, where they may be marked by the apparatus 141 and cut into lengths by the apparatus 142. They are then transferred to the path 151, where the two ends are coped by the machines 152, 154, and transferred from the path 156 to the punching-machines 146 &c.