Patent GB-323233-A (GB)
Title: Improvements in automatic feed wire stitching machines
IPC: B42B4/00
Filed: 1928-09-26
Abstract: 323,233. Camco (Machinery), Ltd., (Kerr, J.). Sept. 26, 1928. Machine details.-A wirestitching machine, particularly for stitching signatures, is provided with an automatic conveyer feed which is adapted to carry the signatures up to the stitcher head, halt whilst the head is automatically caused, by means on the conveyer, to operate, and then continue its movement when the stitch has been inserted. As shown, a pedestal 1<a> carries a stitcher head S operated by a shaft 4 which can be clutched to a constantlvdriven pulley 3 by a onerevolution clutch 2 normally held open by a rod 6 and spring 7. A cam 8 on the shaft 4 operates a clincher head lever 10 through a rod 9. A saddle-shaped feed table 11 is adjustably supported at its forward end as by a handwheel 46. Journaled at the ends of the table are pulleys 14, 15 over which runs an endless belt 16 so that its upper run travels flush with the surface of the front plate of the table near its apex. The pulley 15 is carried by a spring-pressed slide 30 so that the belt is kept under spring tension. The belt is provided with signatureengaging lugs 17, 18 and stitcher-controlling lugs 17<a>, 18<a> which are adjustable in position. The lugs 17, 17<a> are in, and the lugs 18, 18<a> out of, alignment, as shown. The pulley 14 and a stepped sheave 21 are journaled on a stud and have clutching faces normally held apart by a spring. The sheave 21 is constantly driven by belts 69, 66, and can be clutched to the pulley 14 by a collar 23, rod 28<a>, and treadle 28. A squaresection rod 36, Fig. 4, is slidably mounted in bushings 37 rotatable in brackets 35 at the bottom of the back plate of the table. Adjustable along the rod 36 are sleeves 36<a> carrying dogs 38. When a lug 17<a> or 18<a> strikes a dog 38, during the travel of the belt 16, the rod 36 is moved axially until it is stopped by an adjustable stop 39. This stoppage arrests feed movement of the belt 16. At this moment, the stitcher head is caused to operate. To this end, the rod 36 in its axial movement moves an arm 41 which rocks a spindle 41<a>, Fig. 2, to move a rod 43 and so lower a collar 7<a> on the rod 6 to close the stitcher clutch 2. A stitch is then inserted. At the end of this operation, the clincher arm 10 in its movement moves an adjustable rod 44 which, through an arm 45, rotates the rod 36 in the brackets 35. This releases the dogs 38 from the belt lugs, and the rod 36 is at once returned to normal position owing to the counter-pressure of the spring 7. The dogs 38 can be moved to, and held in, operative or inoperative position by screws 47. The number of dogs in operative position at one time will determine the number of stitches inserted in each signature. Two forms of dogs are described. Owing to the fact that the lugs 17, 17<a> are in, and the lugs 18, 18<a> out of, alignment, the stitches in alternate signatures will be relatively staggered. The lugs 17 and 17<a> and 18 and 18<a> may be spaced apart, and a guide rod be arranged in the space between the lugs. A foot-control of the stitcher mechanism may be provided by a pedal 70 and rod 72 linked to the clutch rod 6. The table 11 may be adaptable for flat stitching. In operation, the lugs 17, 18 are adjusted in accordance with the size of signature to be dealt with. Dogs 38 are set in operative position in accordance with the number of stitches to be inserted, and the stop 39 is adjusted to arrest the rod 36 at the required point. The operator depresses the treadle 28 to clutch the pulley 14 to drive the belt 16. When a signature A has reached the required position, the belt 16 and rod 36 are arrested by the stop 39, the arm 41 actuates the clutch 2, and a stitch is inserted. The rod 36 is then rotated, permitting it to return to normal position and the signature A to resume is travel, until arrested again for insertion of a second stitch.