Patent GB-190813359-A (GB)
Title: Improvements in Taximeters or the like Indicating and Recording Instruments.
Inventor: HARTLEY HENRY
Filed: 1908-06-23
Granted: 1909-06-23
Abstract: 13,359. Hartley, H., and Canova, V. June 23. Fares, registering.-In taxameters provided with a mixed time and distance drive, a minimum-fare device, and ' extras ' indicator, mechanism to allow the flag to occupy various positions including ' breakdown ' or ' not recording,' an indicator for these positions, and totalizers for showing the number of hirings, the total fares with and without extras, the time ' not recording,' the distance run while engaged, and the total distance covered, the time mechanism is driven from a mainspring A, Fig. 4, which rotates a shaft 14 carrying a snail cam 15 and a notched cam 17, the movement of the barrel being governed by a fan 20. The rotation of the snail cam depresses a lever 21 which on its release drives, under the influence of a spring 30, an escapement B through a pawl 27 and a ratchet 28. During the revolution of the shaft 14 an arm 32, carried by a spring-depressed lever 33, falls into a notch in the cam 17 and gradually brings the shaft 14 to rest. The upward movement of the lever 21 raises an arm 37 connected to the lever 33, and thus allows the spring A to again drive the shaft 14. The flag shaft E carries a mutilated ratchet-wheel 175, Fig. 3, which only allows reversal between the engaged' and not ' recording positions, and a cam 63 engaging a projection 62 on a spring-controlled lever 61 pivoted on a shaft 50 and carrying a worm-wheel 48, which falls into gear with a vehicle-driven worm 47 when the flag is lowered to 'engaged.' The distance-drive is communicated to the counting-disks from the wheel 48 by a two-pointed starwheel 66 which engages a lever 67 connected by a pin and slot to a slider 71. A second slider 74, actuated by a pawl 72 on the first, is connected by an arm 76 and a pin and slot to a rocking-arm 77 connected by a link 78 to an arm 79 on a tube 80 freely mounted on a rocking-bar 80<a>. The timedrive is communicated to the tube 80 through a pinion 18 on the shaft 14 engaging a wheel 120 driving a pinion 122 rocking the arm 77 through a crank and a slotted connecting-arm 126. The pinion 122 is carried by a pivoted breeches-piece 121 and may be thrown out of gear by an eccentric on the shaft E engaging a pivoted follower connected to the breeches-piece. A pinion 160 mounted on the other leg of the piece 121 is brought into gear when the pinion 122 is disengaged. The clock is stopped and the time-drive rendered inoperative when either of two pawls 44, D is brought into engagement with a ratchet 45 forming part of the escapement B. The pawl 45 is actuated by a cam 41 rocking a lever 40 when the flag is put to 'free,' and the pawl D is operated when the speed of the vehicle exceeds a predetermined value. The pawl D is connected by a wire to a centrifugal governor C driven through a clutch 54 from the shaft 46. The counting-drums are actuated through a minimum-fare lost-motion device shown in Fig. 6. The tube 80 carries a pawl 81 engaging with pins 82 on a mutilated ratchet-disk 83, one oE the pins 82<a> being longer than the others and adapted to engage a notch in an arm 84. The disk 83 is provided with ratchet teeth, one for each pin, the tooth corresponding to the pin 82<a> being bevelled off so that it slips from a catch 85 under the influence of a coiled spring 88, Fig. 3. The rocking of the tube 80 and the pawl 81 moves the ratchet until the last tooth is reached. Further rocking causes the pin 82<a> to act on the notched piece 84, which rocks a pivoted bar 93 hinged at one end to the rocking bar 80<a> and provided with a link 94 at the other. The link 94 is connected to a pawl 95 actuating the pence drum. The catch 85 is moved out of engagement by a link 86, connected to the drum carriage, when the device is zeroized. The lost-motion device is returned to its initial position by the spring 88, a pin 89, Fig. 3, which engages a bracket 90 serving to limit the movement. The fare drums 100-102 and the extras' drums 135 are mounted in a frame 87 moving in guides 103, Fig. 2, against a lever 107, one end of which bears against a drum and the other engages a spring-depressed bolt 106. The frame 87 is depressed when the flag is put to 'engaged' by a cam 104 on the shaft E, shutters 108 being raised from the drum apertures by the upward movement of the bolt 106. The transfer from the pence to the shillings drum is effected by a cam 113 engaging a lever 114, Fig. 8, carrying a gravity pawl 116 acting on pin teeth 111. Check pawls 112, 117 are provided to prevent overrunning. The shillings' drum drives the usual pinion 118, Fig. 4, to transfer to the pounds drum. In returning to zero, the movement of the frame releases the drums from the check pawls and transfer pinion, and weights mounted inside the drums return them to their initial positions showing minimum fare. The pawl 116 is raised by a rod 193 and link 194 connected to a shaft 191 rocked by a projection on the frame 87. The 'extras' drums are actuated by an external lever mounted on the shaft 50, Fig. 3, which rocks a lever 131 connected by a rod 132 to a pawl 133 engaging pins on the drum 135, Fig. 4. The various totalizers are actuated from different parts by slotted wire connexions. The counter d showing the number of hirings is driven by a connexion 64 from the lever 61, and that showing the total fare units e from a link 141 on the rocking bar 80a and a wire 140. A counter f showing the total fares and ' extras' is actuated by a wire 150 connected to the link 141 and by a wire 151 connected to a crank 152 on the 'extras' shaft 50. The arm 157 operating the counter f receives a number of oscillations corresponding to the minimum fare from a projection 156 on a pivoted arm 154, which is rocked by a four-pointed cam 153 ou the flag shaft. The total of the time when the device is not recording is registered by a counter g actuated by a crank on the pinion 160. The total distance engaged is shown on the counter h, which is operated by a link 170 attached to the slide 71. The total distance covered by the vehicle is registered by the counter i which is operated by a wire 65 from a crank on a worm-wheel engaging with a worm 51 on the vehicle-driven shaft 46. A lock is provided on the back of the apparatus whereby the whole device may be secured, and means are provided for returning the time and distance gear to their initial positions. The Provisional Specification describes an alternative means for driving the counters e, f, and an alternative lost-motion device for use with three tariff indicators ; it is also stated that the drums are zeroized by lifting the transfer pinions out of gear.