Patent GB-190814344-A (GB)
Title: Improvements relating to Apparatus for Indexing, Cataloguing and the like
Inventor: DANELLI EUGENIO
Filed: 1908-07-06
Granted: 1909-07-06
Abstract: 14,344. Danelli, E. July 6. Indexing. - Indexing and cataloguing of addres3es, library catalogues, &c. are carried out by indicating the particulars on strips of linen or paper wound upon rollers, each strip being allotted one letter and being adapted to be unwound and rewound independently of the others. The strips are wound upon rollers a equally spaced on spindles b<1> round two bearing-plates A secured to a main axle 0 mounted in a frame S screwed to the main casing. The rollers a are rotated from a pulley M, mounted on ball bearings, by means of a gearwheel I frictionally mounted on the pulley M, which engages a gear-wheel g on a sliding shaft C, and the wheel g engages a gear-wheel 2 on the spindle b<1> of the roller a. An indicator on the outside of the casing is set to the particular letter required, which automatically turns a toothed wheel P on the main shaft 0 and brings the corresponding roller opposite the sliding shaft C and gear-wheel g, and simultaneously rotates the pulley M by a weighted cord passing round a groove d<2> in the pulley M. The gear-wheel I is coupled with the pulley M at the proper moment by a projection k on its end j engaging a wide groove in the wheel I. A leaf-spring with catch fixed to the wheel I automatically couples this wheel to the pulley M when the catch is released from a nose on a stationary plate s adjacent to the wheel I. For each roller a, a conical semicircular recess is provided on an internal flange r on the plate P, adapted to bring the sliding shaft C into alinement with the corresponding roller a. An oblique finger i on the flange periphery of the pulley M engages a stud u on the shaft C as the pulley M rotates and displaces the latter so as to engage its gear-wheel g with the gear-wheel 2, and to remove a brake c<1> on a leaf spring c from a conical brake surface 1 on the spindle b<1>. Simultaneously, the projection k engages the groove in the gear-wheel I, and, as the pulley M further rotates, it turns the roller a and unwinds the strip. At the same time weighted cords in the channels d, d' are wound up, which automatically rewind the strip upon its roller a when the indicator device is released. In a modification, the rollers a in unwinding put springs in tension, which rewind the rollers when required. Figs. 17 and 18 show front and side views of the locking-device used when unrolling the sheets. A square bar 31 fixed in the casing supports a sliding sleeve 32, which carries a clutching-hook 35 in bearings 33, 34. Attached to the hook 35 are arms 49, 50 having notches to engage respectively a weight 15 attached to a cord used to rotate a roller when putting tension in its rewinding spring, and to engage through a slot in the sleeve 32 with a slot in bar 31 to prevent the sleeve from falling. A plate 40 on the sleeve 32 has two oblique slots 41, 42 which respectively engage with a pin on two pivoted rods 46, 45 and a pin 51 on the clutching- hook 35. When a handle on the casing is depressed, it moves the sleeve 32 downwards by a cord attached to a pin 38, and, in consequence of the oblique slots 41, 42, rotates the pivoted rods 46, 45 to cause the latter to clutch the roller a and prevent the bearing-plates A from turning, and disconnects the notch 50 from its slot in the bar 31 and causes the arm 49 to seize and pull down the weight 15 and thus put tension in the rewinding spring.