GB349725A - - Google Patents

Abstract

349,725. Plugging furnace tapping- holes. BAILEY Co., W. M., 336, 4th Avenue, Pittsburg, U.S.A. April 14, 1930, No. 11839. Convention date, April 20, 1929. [Class 51 (ii).] In a clay gun operating mechanism, a gun supporting carriage is rotatably mounted on a pedestal structure independent of the furnace structure, but having a definite relation to the furnace notch, which is the same for each furnace, thus permitting the gun to be transferred from one furnace to another without alteration in the design of the gun. A gun carriage 12 having a gun compartment 13 and a motor compartment 14 is secured to a rotatable sleeve 16 on the pedestal 17 about which the carriage is turned by means of a motor 19 and a worm and gear 20. A clay gun 21 is supported in the compartment 13 by two sets of parallel levers 22, the rear set being pivoted to the sides of the compartment and the forward set suspended from a shaft 28 mounted in a casting 29 which also forms a support for a shaft 25. This shaft is geared to a motor 23 and moves the gun towards or away from the iron notch 11 of the hearth jacket 10 of the furnace by means of a crank 26 and a link 27. The motor 23 is mounted on a floor 35 spaced above the bottom plate 36 of the compartment 14 to provide a ventilating air space 37. In operation, the carriage is swung by motor 19 into operative position where it is locked by a latch 30 on the front of the carriage which engages with a catch 33 on the hearth jacket. The motor 23 is then operated to swing the gun downwardly into the notch 11. After plugging, the gun is retracted by a reverse operation of the motor, the latch 30 released by a remote control means such as a string member 34 and the carriage rotated by the motor 19 into inoperative position.