Improvements in Apparatus for Indicating and Registering the Revolutions of Wheels of Common Road Vehicles or Motor Carriages and similarly Rotating Bodies.

摘要

20,362. Furneaux, H. J., and Rock, W. B. Oct. 9. Counting - apparatus; odometers. - Revolution counters for vehicle wheels and other rotating bodies, comprising main or gross registering-mechanism, and auxiliary or trip registering-mechanism, are arranged so that the latter may be instantaneously reset to zero irrespective of the position of the' former. The apparatus is mounted on the hub of the wheel, and is arranged to indicate distance. The mechanism is enclosed in a metal casing with a glass front and a back plate having a bearing for a central spindle, on one end of which is a spring engaging with the fixed hub, or with the usual nut thereon, and at the other end a worm 2, Fig. 1. When a fixed hub is not available, the spindle may be rotated by a pendent weight. The worm-wheel 3 on the shaft of the 'worm 5 drives a wheel 8 on the spindle of another wheel (not shown) gearing with a wheel 11, Fig. 5, on the central spindle 12 of the counting-trains. Fig. 5 shows only the gross register, comprising four numbered disks 17, 27, 28, 29 with starwheels and fingers driven by a finger 14 on the spindle 12, to which a pointer 13 is attached to indicate fractions of miles or kilometres. The wheels and disks are held between each movement by friction springs 30. The spindle 12 is provided with a pinion (not shown) which drives through reduction gearing a wheel f on the first spindle of the trip 'register, shown separately in Fig. 4. The sleeve g. carrying the wheel f is loose on the spindle h of the units' disk p, but is normally held in gear with a clutch member i by a spriug u acting on a sliding pin t, on which is fixed a plate r engaging a groove in the sleeve g. The star-wheel k mounted on a sleeve l, loose on the spindle o of the tens' disk q, is provided with a pin m passing through a hole in the disk n fixed on the spindle, and is moved by the plate r to clear the finger j in resetting. The movement of the pin t is effected by turning a cam or eccentric 54, Fig 1, by means of the milled head 57. The disks o, p are then returned to zero by the pressure of springs x, y on heart cams v, w. The trip register is thus capable of being reset even when the wheels of the gross register are "on "the shift," and it only records its first mile when that distance has been completed. Specification No. 2541, A.D. 1869, is referred to.