| 摘要 |
<p>1,261,085. Endless and reciprocating conveyers for books. HARRIS-INTERTYPE CORP. 10 June, 1969 [18 June, 1968], No. 11649/71. Divided out of 1,261,084. Heading B8A. [Also in Division B4] An infeed mechanism for feeding books to a three-knife trimming machine described and claimed in Specification 1,261,084 comprises an infeed table 33 on which books are conveyed by means 31, 32 towards the entrance of the machine, means 73 for pushing the books from engagement with the conveying means into the entrance of the machine and means 64, 65, 67 for adjusting the phase relationship between the operation of the conveying means and the pushing means so as to maintain optimum timing of the movement of the book from the conveying means to the pushing means. The books are fed initially towards a front-edge cutting knife 106 of the machine by means of lugs 32 pivotally mounted on chains 31 movable along an in-feed table 30a, Fig. 2. At the start of its travel along the table, the book is engaged by a number of endless bands (36), Fig. 4 (not shown), rotatable on rollers (37,38) the rollers. being mounted above the surface 33 of the table 30a and inclined to the direction of travel of the book so as to cause the latter to be urged into contact with a guide 34, Figs. 2 and 3; in a modification the book may be moved into contact with the guide by means of a jogging device (Figs. 30 to 32, not shown). During this feeding movement the books are engaged by the bristles of a brush 50, Fig. 3. In order to accurately bring a book into correct cutting position the last part of the feed is effected by pushers 72, Fig. 6, mounted on a carriage 73 which is slidable on guide tracks. The carriage is reciprocated by means of arm 82 in contact with a cam 85 and connected to the carriage by a link 83. The guide tracks are pivoted on a shaft (74a, Fig. 8) and are raised and lowered, in order to bring the pushers below the surface 33 of the table during their return stroke, by means of a cam (76). In order to adjust the phase relationship between the pushers 72 and the lugs 32 on the chains, the arm 82 is mounted on an eccentric shaft 78 whose position can be varied by a handle 79; and also, a sprocket 60, Fig. 6, for the chain drive, may be angularly adjusted on its shaft 61 by a differential gear drive 64, 65, 67, the gears being movable about the axis of the shaft 61 by a lever 66 actuated by movement of the eccentric shaft 78.</p> |
