Patent GB-190022674-A (GB)
Title: Improvements in Apparatus for Impressing Stereotype matrices with Musical Notes or other Characters.
Inventor: REVEILLE ANDRE
Filed: 1900-12-12
Granted: 1901-09-07
Abstract: 22,674. RÚveillÚ, A. Dec. 12. Stereotype-matrix machines.- Relates to machines for punching or impressing stereotype asbestos - cardboard &c. matrices with music and other characters. Referring to Figs. 1 and 8, a wheel a, running on ball bearings c in a framing d carries a dial e and corresponding typeholders b. The hub of the wheel carries a bevel pinion m gearing wit h a toothed quadrant n actuated by one of two pedals h, the other o f which actuates a toothed segment ! i gearing with a bevel pinion k on a shaft carrying a crank disc q linked to a sliding plunger s, holding the screw stem u of a hammer head v. Each holder b is guided in a corresponding slot by a screw f and retracted by a spring g, and can be brought under the head v by rotating the wheel. During an impression the wheel is held by a bolt x, which is caused by means of a spring x<1> to engage a hole y opposite each holder b, and withdrawn by means of a pedal 1. A sheet 8 of asbestos cardboard bearing music staves is gripped on a sliding table or carrier 4, Figs. 1 and 3, which is adjustably secured on a sliding carrier 5, in turn adjustable on a sliding carrier 7 carried by a turntable 9 retained by a spring bolt 10. Movement of the carrier 4 on the carrier 5 is limited by means of stops fixed to the carrier 5 and a stop fixed adjustably in a slot in the carrier 4. Adjustment of the carrier 5 is effected by means of a hand-lever 23 and spring latch 23<1>, 23<2>, moving over a sector 25 with notches corresponding to stave intervals, and operating an endless band 18 carried on drums 17 in brackets 16 and provided with lugs 21 engaging a lug 22 on the underside of the carrier. The band 18 is kept in tension by means of oppositely-threaded rods 19 coupled by a nut 20. In order to return the lever 23 to the mid-position of the sector, the nut 20 is fitted to slide in guides 26 on the carrier 7, and carries two loose collars 27 and an interposed spring 28 on the part between the guides, and two fixed sleeves behind the collars. The carrier 7 is traversed similarly on the carrier 9 by a band 31 and handwheel 32, and also automatically as follows :-The drum 30 of the band 31, the wheel 32, and a ratchetwheel 33 are mounted on a tubular shaft 34 revolving in bearings fixed on the table 9. A toothed quadrant 35 carrying a pawl is mounted loose on the shaft 34 and gears with a bevel pinion 37 receiving a rocking motion from one of the pedals h. A quadrant 40 masks the ratchet-wheel 33, and is fast on a spindle 41 turned within the shaft 34 by a hand-lever 42 having a latch 43 engaging notches in a quadrant 44. The shaft of the pinion 37 is made telescopic, to allow for movement of the turntable 9. An index 45 on the table 9 moves over a graduated dial on the framing. In the modification shown in Fig. 10, the wheel a is mounted on the coned end of a shaft c turning in ball bearings in a tube d, which carries at one end a cam f for operating a hammer m, and at the other a bevel pinion gearing with a segment operated by a pedal i. The type-holders b are pressed downwards by the hammer, until they meet an abutment formed by a steel strip p. Each holder is guided in its cavity by a screw stud and retracted by a spring and retained by a cover plate having conical holes t<1> disposed opposite the centre line of each holder for engagement with the nose of a spring bolt u operated by the pedal i. The bolt is held retracted by a latch v, which is released by means of trippers pivoted on the cover-plate and adapted to be locked in the tripping position by push-pins. The push-pin is held in either position by a spring strip, and is pressed outwards by a finger on the bolt u, so that the spring strip is bent beyond the median position and completes the retraction. A link k serves to retract the bolt u, and has an inclined tappet engaging a pivoted toe u<3> of the bolt, which yields on the downward motion and is returned by a counterweight and rigidly presented on the upward motion. As a guide to the adjustment of the carriers, a spindle 1 is mounted in the framing and carries lever arms 2 connected by a'rod which carries a pointer, each arm also carrying a pointer. The rock-shaft of the pedal i is provided with a lever 43 carrying a cam engaging a roller on a rod coupled to the pawl for automatically traversing the carriers.