Patent GB-191368-A (GB)
Title: Improvements in surface measuring machines for leather and the like
IPC: G01B5/26
Filed: 1922-12-05
Abstract: 191,368. Maschinenfabrik Moenus Akt.-Ges. Jan. 9, 1922, [Convention date]. Surface areas, computing.-In a machine of the Sawyer type for measuring leather &c., the measuring and adding wheels are coupled pneumatically, and tooth and thickness errors are prevented. A grooved feeding roller 1 contacts with measuring wheels 2 on levers 5, each wheel having integral with it, and on either side, rims 3 which at the proper time transmit their rotation to wheels 7 carried on arms 10. On each of these wheels 7 is a pinion 8 meshing with a toothed segment 9, counterbalanced at 13 and pivoted at 16 to an arm 17 which is pivoted at 18 to the bearing 12 on the frame and carries a projection against which bears, at a predetermined moment, a bar 20 on a shaft 19. Integral with each segment 9 is a hub 14 co-operating with a chain 15 to operate the adding mechanism; the pivot of the segment moves in a circle due to the manner in which it is mounted, so that movement of the segment as a whole about the pivot 18 does not affect the adding mechanism. This prevents any tooth error since, if the tops of the teeth on 8, 9 come into engagement, the pinion 8 does not carry segments 9 round with it until the pinion has moved to allow the flanks of the teeth to contact. In the initial position, the upper end of each segment 9 bears against a rubber stop 21 carried on an arm 22, the lower position of this stop being determined by a set-screw 24, Fig. 4. The treadle lever operating the stop 21 is connected by a chain 25 to a rod 27 passing through arms 31, 32, the latter of which is connected by a link 33 with an arm 34 on the shaft 19. When the treadle is depressed a collar 29 on the rod 27 compresses a spring 35 and rotates the arm 31 anti-clockwise, Fig. 4. The arm 32 is then rotated by a ring 30 on rod 27 so that the shaft 19 is turned, the bar 20 bears against the arm 17 and the segment 9 is brought out of engagement with the pinion 8. When the treadle is released, these operations are reversed. Compressed air is supplied from a fan through pipes 38, 39, nozzles 41 and cylinder 40, flexible connection 47, and tubes 42. The ends of the tubes are bent down so that the air escapes into the grooves in roller 1. In the operation of the machine these ends are closed by a piece of leather passing over this roller, and when this happens a piston 48 in each cylinder 40 is raised by the compressed air and through a bar 53 turns a bell-crank lever 55, 56 so that the end 55 falls away from its corresponding wheel 7, which now moves into contact with the rim 3, and actuates the adding mechanism. When the piece of leather has passed the ends of the tubes 42, the air escapes, and lever 55 is raised, moving wheel 7 away from rim 3 and at the same time braking it. After the measurement on the dial has been noted. the treadle is then depressed, as above described. The tubes 42 are connected by arms 43 to links 44 carrying rollers 46 and pivoted at 45 to the arms 5, so that these tubes are raised and lowered with the measuring wheels. The Specification as open to inspection under Sect. 91 (3) (a) describes and illustrates cheeks 46, Fig. 1 (Cancelled), as alternative to the rollers 46. This subject-matter does not appear in the Specification as accepted.