Patent GB-196283-A (GB)
Title: Improvements in taximeters
IPC: G07B13/00
Filed: 1923-04-11
Abstract: 196,283. Soc. Parisienne de MÚcanique GÚnÚrale. April 15, 1922, [Convention date]. Taximeters, actuating details; resetting- mechanism, arrangement of.-A shaft 3, driven from the vehicle axle, carries a disc 1 and a starwheel 21, the teeth of which engage a projection 25 on a lever 26 carrying a pawl 27<1> and having a projecting arm 29 that engages a second lever 30 carrying a fixed pawl 30<1> and two pivoted pawls 32, 152. The pawls engage a double ratchet-wheel 33, 34, connected to the centimes drum of the fare register and each time a tooth of the starwheel escapes under the projection 25 the pawl 32 pushes the ratchet wheel forward one tooth. To permit the drums of the fare register to be moved onwards to zero a lever is rocked on its pivot, lifting all the pawls excepting the pawl 152, which slips during the forward movement of the ratchet. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the following features :- Flag and setting-spindle mechanism; multiple tariff; mixed time and distance drive.-The flagspindle 114 may be moved from its disengaged position to any one of three tariff positions or to a breakdown position, the locking device preventing retraction of the flag before the first tariff position has been reached. The road-wheel drives through a shaft 7; Fig. 2 (Cancelled), and pinions 8, 9, a shaft 10 carrying a pinion 11 which actuates through a ratchet and pawl a wheel 13 on a wormshaft 14 and which also meshes with pinions 12<1>, 12<2>, that may be clutched to pinions driving the worm-shaft 14 through a gear-wheel 14<1>; the worm-shaft is driven through the wheel 13, through the pinion 12<1>, or through the pinion 12<2>, according as the flag-spindle is moved to the first, second, or third tariff position : relative alterations in the tariffs may be effected by altering the gearwheels. The. worm-shaft 14 engages a worm-wheel driving a shaft 3 through a one-way clutch. The shaft 3, Figs. 1 and 13 (Cancelled), carries a disc 1, a star-wheel 21, and an adjusting disc 22, and when the flag-spindle is in the engaged position is either driven from the shaft 14 or by a clock driving a pinion 5 connected with the disc 1 through a one-way clutch, a brake stopping the clock when the flag-spindle moves to disengaged position. The indicating-drums are actuated from. the shaft 3 as described above. Minimum fare, devices for registering. - A recess is adjustably arranged in the edge of the disc 1 and until the disc has been moved a sufficient distance to permit a stop 24 to enter this recess the registering device is held out of action. Transfer is effected by mechanism of the Geneva type. Additional-charge registers. - An " extras" register S, actuated by an external handle on the side of the case, is mounted in alignment with the fare register and has transfer mechanism of a similar character. With fare and distance totalizers; registering number of journeys and stoppages.-Counters are provided for registering (a) the number of times the vehicle is engaged-this mechanism is driven by a cam each time the flag-spindle is operated; (b) the total distance covered-the spindle 7 drives through a worm 184 and a rod transmission element, a shaft operating this register; (c) the total distance paid for-this register is coupled to the register (b) by a clutch that is thrown in when the flag-spindle is in its engaged position; (d) the total extras-actuated each time the handle operating the extras shaft is moved; (c) the total fares-a pawl actuated each time the stop 25 on the lever 26 falls drives this register; (f) the number of stoppages due to accident-this register is actuated each time the flag-spindle is moved to the break-down position. Resetting-mechanism, arrangement of. - The fare and the extras drums are reset to zero by releasing them from their transfer mechanisms and rotating them onwards under the action of a spring until they engage spring stops. The spurwheels 38', Fig. 6 (Cancelled), of the Geneva motion of the transfer mechanisms are carried on a shaft supported on arms 4C, 41, carried on a shaft 42; the shaft 42 has a side arm on which a spring-controlled member 166 can slide, this member carrying a roll 165<1> and being provided with a stop 166<11> adapted to be engaged by a roll 135 on a disc 134 on the flag-spindle 114; a spring-controlled pivoted arm 161 carrying a ratchet-wheel 160 is adapted to be pressed outwards bv a cam 133, Fig. 2 (Cancelled), engaging the ratchet-wheel on the flag-spindle being moved to engaged position and thus permits the member 166 and the arms 40, 41 to pivot about the axis 42 taking up the position in Fig. 6 (Cancelled) : when the flagspindle is turned in the reverse direction the cam 133 turns the ratchet-wheel 160 idly and the roll 135 engages and lifts the stop 166<11> until the roll 165<1> is raised to the top 164 of the arm 161 which maintains it in this position with the spur-wheels 38<1> lifted from engagement with their pinions; brake-wheels 50 mounted on levers 53 operated by the movement of the arms 40, 41 engage the Geneva movements and hold the gears in position for meshing when they are released again. The registering drums D, S, Fig. 4 (Cancelled), are mounted upon sleeves rotatable on bushes fixed on the square shaft 36; discs are secured to the bushes and carry spring pawls adapted to cooperate with stops mounted on the drums : on the flag-spindle being moved to engaged position a cam on the spindle moves a toothed sector to wind up a spring 61 secured to the shaft 36; when the spindle moves back tc the disengaged position the transfer mechanism is put out of action as previouslv described and cams on the shaft 114 free the pawls from the double ratchet-wheel 33, 34, and a holding pawl from the extras drum permitting the shaft 36 under the action of its spring to rotate and, through its engagement with the stops by the spring pawls on the discs, to move each drum to zero position, in which position stops on the drums engage spring stops 59, Fig. 4 (Cancelled), on a shaft 60. On moving the handle to engaged position once more the stops 59 arc lifted by the action of a cam on the flag-spindle shaft. A signal visible by the passenger shows the position of the flag-spindle. This subjectmatter does not appear in the Specification as accepted.