Patent GB-190416255-A (GB)
Title: Improvements in Transfer Presses and Method for Operating the same.
Inventor: HILL JOHN ROSS
Filed: 1904-07-22
Granted: 1904-10-27
Abstract: 16,255. Hill, J. R. July 22. Embossing; chucks.-Relates to a transfer-press for producing banknote-printing plates or the like. The metal blank is clamped on a universal chuck on a travelling bed 100, Fig. 1, and is reciprocated under a depressible transfer-roller 96, which is a stock roller bearing characters of the required style or design, and is registered according to a pattern 57 adjustable for proportional spacing. The roller 96 is carried on a beam 6 mounted in a trunnion block 5 adjustable vertically by means of a screw 3. An extension 7 of the beam 6 is maintained against a cam 9 on a shaft 10 operated by a hand-lever 11, which is locked by means of a pawl or lug and a suspended rack 16, and is limited in its downward movement by means of a pin or stop adjustab'e in apertures 17 in the rack 16. Bearers 21 for engagement against the roller shaft are adjustable on a head 20 which is adjustable on the beam 6. Sliding roller supports 25, Figs. 1 and 21, are provided in a saddle 70 sliding on the head 20. The saddle 70 is adjusted by means of a screw 65 and a threaded sleeve 72 carrying a loose thumbwheel 73 having a spriug-clip connection 74. Pins 30 on the supports 25 engage in slotted crank-arms 29 on a shaft 26, which is provided with a handle 28, and is acted upon by a spring 32, so that the roller shaft is maintained against the bearers 21. One support 25 is provided with supporting-lugs and stops, and the other support is provided with supporting-lugs and a spring-pressed plug ; or the roller shaft is bevelled to travel along guide-rails, or is recessed to receive guide-rails having an upwardly-curved or a depressed arcuate end. The roller is secured on its shaft by means of a collar 93, Fig. 32, a threaded sleeve 94, a spacing-nut 95, a washer 99, and a nut 97. When adjusting the roller on its shaft, a disc 149 is slid against the collar 93, and a micrometer gauge is used to determine the distance between this disc and the roller. The pattern 57 is carried by a member 40, Figs. and 5, angularly adjustable on a support 39 connected to the bed 100 and guided on a fixed support 36. A pointer 56 is adjustable over the pattern 57. An arm 58 is adjustable on a member 45 sliding on the member 39 and carrying a slide block 49, on which is pivoted a rack 50 carrying the pointer 56 and engaging with a pinion 52 on a hand-shaft. The arm 58 carries an index 61 for register with a pointer 62 adjustable on the saddle 70, and a pointer for register with radial marks on the roller 96 ; or the arm carries an adjustable index-glass and the saddle a microscopic reading- device. The bed 100 is mounted on ball bearings 101, Fig. 18, and carries a rack 102 engaging with a pinion 103 on a hand-shaft 104. The chuck comprises wedge-shaped members 106,107, a tilting member 108, a rotating member 109, a laterallyadjustable member 110, and a longitudinallyadjustable member 111. The member 108 is adjusted by means of screws 125. The member 109 is adjusted by means of a toothed ring 129 and a toothed nut on a spindle swivelled in a block pivoted on the member 108. The member 110 is U-shaped and slides in guideways on the member 109. A screw carrying, a vernier is swivelled on the member 110 for engagement with threaded segments pivoted on the member 109. The segments are slotted to receive crank-pins on a crank disc, for disengagement from the screw. The member 111 is provided with a guide-shoulder 139 for the work, a surface 140 flush with the legs of the member 110, work-clamps 141, and an adjustment rack 142 engaged by a pinion 143 actuated by a wrench.