Patent GB-191417856-A (GB)
Title: Improvements in or relating to Sheet-feeding Apparatus for Printing Presses.
Inventor: KILBURN BERTRAM EDWARD DUNBAR
IPC: B65H9/00
Filed: 1914-03-12
Granted: 1915-03-11
Abstract: 17,856. Kilburn, B. E. D., [American Type Founders Co.]. March 12. Pile tables for sheet feeds; feed-tables; separators; carriers; registering - devices; guides. -Above the feed-board of a printing-press is provided a frame hinged on a shaft and carrying mechanism co-operating with conveyer tapes, front and side registering - mechanism, sheetretarding fingers and a sheet detector controlling the printing-cylinder trip, and the frame can be turned up on the shaft without disturbing the driving relation between the shaft and the mechanism on the frame. The sheets are separated from a pile on an adjustable support 362 and directed to feed rolls 372, 380 by rubber-studded wheels 373, and are directed by guides 377, 384 to endless forwarding belts 264 travelling round a feed board 155 pivoted at 270 and supported on adjusting-screws at its forward end. The hinged frame comprises two side frames 296 pivoted on the shaft 292 carrying the separating - wheels 373 and resting on the feed-board at 305, and supports bars 299 apertured to receive balls 301 which act in conjunction with the belts 264 to forward the sheets between guides 304, 160 against the usual front stops 163 adjacent to the impression cylinder 103. The shaft 292 is driven direct, and the shaft 270 through a gear on a shaft 274 from the feed-roll shaft 277, which is driven from the vertical shaft 278, this arrangement permitting the frames 296 to be turned back to the position 358 to cut out the automatic separation and allow hand feeding to the board 155, and also permitting the feed-board to be turned to the position 361 to give access to the inking- apparatus without interfering with the drive. The sheets are registered against a side lay on the feed-board by rubber-covered rolls carried by pulleys 344 supported on arms 342 on a rock-shaft 341, which is carried by the frames 296 and rocked from a cam on the shaft 292 to lower the rubber rolls on to the sheet at the required times. The pulleys 344 are driven by a cord from a pulley driven constantly by bevelgear 350 and belt gear 353 from the shaft 292. The sheets are retarded on approaching the front stops by fingers 307, preferably rubber tipped, carried on a shaft 306 rocked from a cam 340 on shaft 292. A detector 316 is provided to trip the impression cylinder when a sheet is not fed, such detector being freely mounted on a shaft 320 and rocked by a pin- and-slot connexion 317 with a crank 318 fixed on the shaft 320, which is rocked by a cam on the shaft 292. When a sheet is present, the detector is supported, the crank-pin moving in the slot, but when no sheet is present the detector descends into an aperture in the guide 160, its tail end then lifting an arm 321 to rock a shaft 322 whereby a crank 323, Fig. 2, thereon moves a link 324 so as to direct a pendant rod 326 carried by an oscillating bellcrank 328 into the path of a rod 332. This rod is thereby depressed and acts through a lever 334 and rod 336 to disengage a camreciprocated notched link 131 from a lever 128 actuating the trip. The notch in the link has a lug 151 at one side to ensure that the lever is moved to tripping position after effective disengagement of the notch. The pile table 362 is angularly adjustable about a shaft 364 by quadrants 363 and bolts 365, and is fitted with a hinged extension plate 366 supported on arms 367 with rubber pads on the top, these arms being pivotally supported on, and adjustable by screws from, a bracket 368 The upper feed-roll 380 is carried in arms 379 pivoted to brackets 378 on a shaft 375, such arms being pressed down by springs 382 and adjusting - screws 381 in the brackets. The guides 377 which are extended to guard and support the edge of the pile are carried by brackets 376 on the shaft 274.