Patent GB-190908667-A (GB)
Title: Machines for Welding Open Ended Blanks into Finished Chain-links, Rings and the like.
Inventor: STANDISH PHILANDER HAYDEN
IPC: B21L3/00
Filed: 1909-04-10
Granted: 1909-11-11
Abstract: 8667. Standish, P. H. April 10. Forging chains; welding.-In a machine for welding open-ended blanks into finished chainlinks, rings, &c., the blanks are carried by a rotary member through a curved heating-furnace, are removed by a reciprocating and tilting rod and shifted into an horizontal position on a guide-plate, being then conveyed to the anvil by tongs. The blanks u, Fig. 4. are carried through a quadrantshaped furnace B by radial spokes I on a wheel H, which is intermittently rotated on a fixed shaft by a pawl lever P, Fig. 2, which is pivoted at x on a rod journaled on the shaft, and is operated by a lever p<2>, which is oscillated by a link and crink on the shaft E. The blank is then moved between guides g<4> on a plate g, turned into an horizontal petition, and moved up an incline g<3> into the tongs T by a bar R carrying fingers r, which, on the forward motion of the bar, move over the bar I, Fig 7, and, on the return, enter the blank. The bar, which is reciprocated by a link R<1> and a spring-controlled lever R<2> on a shaft R<3> rotated by a cam on the shaft E, is tilted in its forward stroke so as to clear the blank by a channelled arm o', pivoted at o and operated by a cam on the shaft E, through a shaft O<8> and links O<7>, O<6>, O<5>. The pivoted jaws t of the tongs T, Fig. 4, are now closed on the blank by a lever s<2>, normally with. held by a spring s<3>, but moved to engage the cone sleeve s by a projection on a cam, engaging an arm on the shaft s<1>. The tongs, which are mounted on a turntable l, are now moved through a right-angle on the shaft L to bring the blanks opposite the anvil by a link l<3> and bifurcated link l<5> held in contact with the cam E<7> by a spring l<6>. During this operation, the shaft K is rotated by the planet motion of the pinion k on the pinion n to present the tongs to a cooling stream of water. The tongs are next tilted, the shaft K simultaneously reciprocated, and the tongs then lowered to bring the blank into the recess in the anvil U. In order to tilt the tongs, the turntable l is mounted within a member m, Fig. 4, which is pivoted at m<1> on the table M and is operated against a spring m<4> by links m<6>, m<7>, and a cam E<9>, of shape to allow the tongs to be tilted four times during each revolution, so that the blank may be hammered twice on each side, the tongs being rotated at each tilting. The shaft K, which is returned by a spring K<4>, is reciprocated by a cam, links y<5>, y<4>, arms y<1>, y<2>, and a rod x provided with a cushioning-spring x<3> which moves in a tubular extension x<3>, hinged to the arm y<2> and resting on the lug y<3> when inactive. The shaft K is rotated so as to present opposite faces of the blank alternately to the hammer by bevelgear k, n, a rod n<3>, an arm, and a roller held in contact with a cam on the shaft E by a spring. The blank is welded by a helved hammer V pivoted at V<1> and connected by a link V<2> to an arm V<3> fixed to a shaft V<4>, which carries also an arm V<5> engaging a cam on the shaft E. The tongs are released by levers Q<1>, Q<2>, a link Q', a lever Q<4>, and a cam E<11>, Fig. 16, and the finished links drop through a hole M' into a receptacle. The table M on which the tongs are mounted is pivoted at 26 and is vertically adjustable by a screw 28; the shafts O<8>, s<1>, R<3> consequently have a limited play in their bearings. In welding butt-jointed links, a separate device may be used tor bringing the ends together before welding.