Patent GB-406058-A (GB)
Title: Time distance recording device
IPC: G01P1/12
Filed: 1932-08-27
Abstract: 406,058. Time-distance recording and clock mechanism. NUSSBERGER, R., 25, Mythenstrasse, Zurich, Switzerland. Aug. 27, 1932, No. 24035. [Classes 106 (iii) and 106 (iv).] A distance record is marked on a clock driven strip by a stylus carried by a nut on a screw spindle rotated in accordance with distance travelled, the nut being reversed at the end of a certain distance travelled. The cylindrical drum 2 is rotatably mounted in a casing 1 of light metal or synthetic resin and is driven from clockwork 6 and carries a tin, lead alloy, aluminium or the like strip M on which records the stylus 11 carried by the nut 12 on the screw spindle 10 rotated by the toothed wheel 17, one or other of the toothed wheels 18, 19, one of the toothed wheels 22, from 23, driving member 44 and gearing 37-42 driven from the motor, cardan shaft or wheel axle of a vehicle through a flexible shaft. The gearing 17, 18, 19, 22, is contained in a casing 21 which can be rocked about a pivot 20 for one or other of the gear wheels 18, 19 to engage with the gear wheel 17. To this end the casing 21 carries a blade spring 25 through a hole in which a spindle 28 passes and on either side of which are springs 31 between two adjustable collars 29. The nut 12 has an arm 32 which at two points of its motion engages the adjustable collars 33, 34 to move the spindle 28 and compress the springs 31 to rock the casing 21 and reverse the nut 12. The strip M is secured to the drum 2 by projections on the drum engaging apertures 61, 62 in the strip M, the latter being accurately adjusted by means of cut-away portions 63 which are placed exactly over the edge 64 at the end of the strip. The recording member 11 is pressed against the drum 2 by a spring 35<1>, Fig. 8, enclosed in the nut 12 and has its rear end engaged by a rod 13 parallel to the spindle 10 and mounted in pivots. 14 so that opening the cover 9 turns the rod 13 to lift the stylus from the drum 2. To indicate that the recording strip M is to be replaced or the clockwork requires rewinding, a window 67 exhibits an indicating drum driven from the drum 2 and marked with the days of the week and six green and one red dot. Under a plate 8 hands of the clock 6 show time on a dial 7 with apertures 45 through which appear numerals 1-12 or 13-24 on the plate 47. The hour wheel 49, Fig. 10, has a pin 50 which actuates a device for turning the plate 47 according to the particular twelve-hour period. This device consists of two star wheels 52 with ten points and 53 with five points, carried by a bridge 51 secured to the rim 46, a pawl 54 and a U-shaped spring 55 secured to the plate 47. The V-shaped bent ends of the spring 55 co-operate with the star-wheel 53, whilst the pawl 54 is pressed against the periphery of the star-wheel 52 by means of a spring 56. The plate 47 is provided with two upwardly bent lugs 58, fitting into a recess 57 of the pawl 54, and an elongated slot 59 for the passage of the spindle 60 of the second hand. The length of the slot 59 is so dimensioned that it permits of a rocking of the plate 47 through at least 15‹, this corresponding with the peripheral distance between two consecutive numerals on the plate 47. A slot 59a is also provided in plate 47 to accommodate the pivot of the star wheels. For winding the clock shaft 68 is bevel geared at 69 to a shaft 70, the free square end 71 of which is located in an apertured lug 72. The shaft 37 projects at both ends of the casing 35 and at one end is provided with a coupling device 73 for the flexible driving shaft and at the other end with a coupling member 74 driving a flexible shaft leading to a speedometer. A distance counter may be provided actuated by the arm 32 which moves the counting mechanism when the nut 12 reaches its end positions on the spindle 10. The casing 1 is completely closed except at the points at which the screw spindle 10, setting rod 28 and casing 21 are provided, a separate cover enabling these members to be exposed. The clockwork, which may be a one or a multi-day clock, may be provided with a winding device actuated by the vehicle.