Patent GB-260673-A (GB)
Title: Improvements in or relating to machines for lining or "marking-up" book covers
IPC: B42C7/00
Filed: 1925-08-05
Abstract: 260,673. Dunn, H. Aug. 5, 1925. Embossing; creasing.-Relates to machines for finishing the rounded backs of books by creasing, or by the application thereto of lining, lettering, or ornamentation by means of tools mounted so that they can be reciprocated over the back of a book and at the same time can be manually movable towards or away from the book-holding means. The book 4. Fig. 1, is clamped in a frame 1 between plates 2, 3. of which the latter is movably controlled by a quickacting screw 5, a setting-gauge 7 being provided on the clamps to ensure the correct positioning of the book. The rear end of the frame carries end bearings 8 for the trunnions 9<a> of a transverse bar 9. which forms one end of a rectangular guide frame provided with sides 10 and a free front end 11. The sides 10 support a slidable carriage 12 provided with downwardly extending lugs forming end supports for a transverse spindle 14 carrying lining or other tools, which in the example shown consist of a number of discs 15. The ends of the spindle 14 are formed with conical sockets to enable them to be removably mounted between conical end supports provided on lugs on the carriage 12. Means are also provided to enable the spindle and lining discs to be held against rotation when " blind " lines are required. The lever for reciprocating the carriage 12 comprises a frame with sides 19 pivoted at 20 to the main frame 1, and with two or more transverse rods or handles 21, 22, connection with the carriage being provided by pins 17 on the carriage engaging slidably within slots 12 in the sides 19 of the frame. The rods 21, 22 are disposed at different distances from the fulcrum 20 to enable the leverage of the operator to be varied. Adjustable counterweights 24 mounted upon spindles 23 extending rearwardly from the end bar 9 of the frame 9-11 serve to counterbalance the weight of the tool carriage &c. The free end 11 of the guide frame is pressed down by hand to regulate the pressure of the tools upon the book. In the normal position of rest. the lining-tools are disposed towards the rear end of the machine, where they are heated by gas burners or other heating devices disposed directly beneath them in the main frame. For marking in gold leaf, one or more frames currying a reel of gold leaf and a laying- on roller are mounted upon the slide 12. Fig. 10, in advance of the type-carrier or ornamenting- tools 15. The frames each comprise two adjustably spaced side plates between which a reel 60 of gold leaf and a laying-on roller 62 are rotatably mounted upon bushes supported by screws 57, the bushes serving as distance pieces for the plates. The side plate 53 of the frames is provided with lugs 54, 54a engaging corresponding recesses in the opposite side plate, and in addition the lugs 54a engage within longitudinal slots in transverse supporting bars 50, 51 secured upon the slide 12 by a plate 63, thereby enabling the frames to be adjusted transversely to align the gold-leaf reels with the ornamenting-tools. The gold leaf is mounted upon tissue, the free end of which is secured to the laying-on roller 62, so that when the slide 12 is reciprocated and the free end 11 of the frame is depressed the gold leaf is transferred from the roller 62 to the back of the book, and is subsequently impressed by the oncoming tools which have been previously heated. The side plates of the frames supporting the gold-leaf reels can be adjusted to accommodate between them reels of different widths. Rulling-appliances; inking-apparatus. - For marking or lining in ink. the machine is provided with an inking-pad which is mounted above the rotatable discs and spring-pressed into contact therewith, the mounting lugs of the discs being modified by an offset extension bracket to enable the pad to be positioned. Holders for loose types.-In order to emboss letters or like characters upon the back of a book, the shaft 14. Fig. 1, carrying the lining-rollers is replaced by a rotatable shaft 34. Fig. 7, carrying a rectangular trough 30 within which types are clamped by means by screw-adjusted side and end plates. The sliding frame 12 is adjusted so that the types are disposed centrally above the back of the book, whereupon the front end of the frame 10 is depressed to bring the type into contact with the back of the book, and the slide 12 is reciprocated slightly to rock the typecarrier to either side of the central position. To facilitate the setting of the type-carrier above the centre of the back of the book, a graduated plate 40 is mounted upon one of the frame bars 10, and co-operates with the front edge 43 of the slide 12 so that when the edge 43 is aligned to indicate the thickness of the book the typecarrier is disposed centrally.