GB186186A - Blank feeding device for heating furnace - Google Patents

Abstract

186,186. Constable, A. July 7, 1921. Step-by-step conveyers. -Bolt blanks are fed through a furnace by means of a pair of toothed bars having a relative reciprocating motion, the arrangement being such that in one direction of motion one of the bars rides over the blanks held by the teeth of the other, and in the reverse direction the blanks are fed forward one step. In the construction shown the lower bar 3 is fixed while the upper one 6 is mounted in a reciprocating carrier 5, the two bars being opposite a slot in the wall of the furnace through which the blanks project. Each bar is built up of a number of toothed strips separated by distance pieces, and the two bars are so arranged that the toothed strips of one project between those of the other. From the position shown in Fig. 3, the upper bar 6 is moved to the left, pushing the blanks 12 up the inclines 11 and down to the next teeth of the bar 3. On the return stroke the blanks are held by the bar 3, while the upper bar rides over them and returns to the position of Fig. 3. The blanks are delivered to the conveying mechanism from the space between a fixed incline 21 and a slide 22, which rests on the blanks and contacts with the end of the reciprocating carrier 5. At the end of each forward stroke of the carrier a gap is left between the end of the incline 21 and the carrier 5, and a blank falls into the first tooth of the bar 3.