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    • 2. 发明专利
    • Improvements in or relating to transmissions for traversing bulkheads or other partitions along compartments particularly on vehicles
    • GB760130A
    • 1956-10-31
    • GB3464553
    • 1953-12-11
    • WALKER AND COUNTY CARS LTDREGINALD BRUCE HILL VENNINGDAVID ROBERT FREDERICK TAPP
    • B60P1/00B60P7/14
    • 760,130. Moving bulkheads in vehicle bodies. WALKER & COUNTY CARS, Ltd., VENNING, R. B. H., and TAPP, D. R. F. Dec. 13, 1954 [Dec. 11, 1953], No. 34645/53. Class 78 (4). The transmission for moving a bulkhead 15, Fig. 1, to move material in a compartment comprises one or more endless flexible elements 25 ... 28 guided to form a number of stretches moving simultaneously in the same direction and secured to at least three points on the bulkhead. In the construction of Fig. 1, a pair of chains 25 on each side of a vehicle with telescoping scuppers 10, 11, 12 pass over driven sprockets 18, 20 and are secured at one end to the wall 15 of the inner scupper 10 and at the other end to cables 26, 28 which are returned over pulleys 23, 24 to be secured to the wall 15. The pulleys 18, 20 are fast with pulleys 17, 19 connected by a chain 21 and the common shaft 22 of the lower pulleys is driven from the power take-off of the vehicle engine. The separate endless elements formed by the cables and chains 25, 26 and 27, 28 may be replaced by a single element on each side passed over pulleys and sprockets suitably disposed to form two pairs of runs with those runs moving in the same direction connected to the bulkhead or wall 15. Further the endless elements on opposite sides may be joined to form a single endless element as shown in Fig. 4 in which a cable 30, 32, 33, 36, 45, 51 is passed over suitably disposed pulleys to provide four runs 30, 30, 36, 36 secured to the bulkhead 15 which moves relatively to the inner scupper 10 of a pair of scuppers 10, 11. Any of the pulleys illustrated may be driven or replaced by driving sprockets engaging a portion of chainsecured in the cable. Alternatively, the runs 51 of Fig. 4 may be broken and theirends wrapped around driving drums carried by a common lateral shaft driven from the vehicle engine. In the construction of Fig. 5 two endless elements, each formed of a length of chain 69 passed over sprockets 52, 68 and a length of cable 54, 56, 58 passed over suitably disposed pulleys on the vehicle framework and over pulleys 62, 64 on the inner scupper 10 are secured to the bulkhead 15 at two upper laterally spaced points and to a single central tongue 6 towards its lower end. As indicated in Fig. 6 the pulleys 62, 64 are carried by a bracket 71 which is protected by the inclined wall 70 of the bulkhead 15 from the material in the inner scupper 10. In the construction of Fig. 8 an endless cable 30, 32, 36, 45 reeved as shown is driven by a connection 75 between the run 36 on each side of the vehicle and a run 72 of an endless chain carried by sprockets 73, 74. The sprockets 73 on opposite sides are driven by their common shaft 76 either from the engine of the vehicle or through a manuallyoperated drive from a crank. According to the Provisional Specification chains driving the bulkhead can be driven by a reversible ratchet mechanism driven manually or by power.
    • 3. 发明专利
    • Improvements in and relating to parachutes
    • GB620943A
    • 1949-04-01
    • GB320947
    • 1947-02-03
    • REGINALD BRUCE HILL VENNING
    • B64D17/34
    • 620,943. Paying-out apparatus. VENNING, R. B. H. Feb. 3, 1947, No. 3209. [Class 78 (v)] [Also in Group XXXIII] The opening of a parachute 1 is made gradual to reduce the shock, by connecting a control cord 3 attached to the centre of the canopy, to a device carried by the load which pays out the cord 3 in steps according to the aerodynamic load on the canopy. The device comprises a bracket, which has journalled on it a drum 4 on which the cord 3 is wound, and which carries a snail cam 5 and a roller 13. When the canopy is opened, the tension in the cord 3 exceeds a certain value and the drum is prevented from rotating by the roller 13 abutting against the arm 14 of a bell-crank lever 7 pivoted to the bracket at 8 and having its other arm 12 under the compression of a spring 10. When the tension in the cord 3 is reduced below the said pre-determined value on account of an initial deceleration of the load, the spring 10 is able to expand and rotate the end 14 of lever 7 below the roller 13, which is rotated slightly in the winding direction. The drum 4 is now freed to rotate clockwise and pay out a length of cable 3 to open further the canopy. After one revolution of the. drum 4, the lever 7 is brought back to its original position by a follower 6 secured thereto which bears against the inner surface of the snail cam 5. The canopy is thus opened in successive stages depending on the tension in the cord 3.
    • 5. 发明专利
    • Improvements relating to mechanical power relay or servo motor apparatus
    • GB592640A
    • 1947-09-24
    • GB1243145
    • 1945-05-17
    • REGINALD BRUCE HILL VENNINGERNEST THOMAS JAMES TAPP
    • B60T13/06B62D5/00G05G19/00
    • 592,640. Mechanical servomotors. VENNING, R. B. H., and TAPP, E. T. J. May 17, 1945, No. 12431. [Class 80(ii)] [Also in Group XXXIV] A mechanical follow-up servomotor for brakes, steering and like controls, between a reciprocatory operating-rod 1 and a follower-rod 2, with provision for disconnecting the power source and obtaining direct operation when required, comprises an electric motor 17 which constantly drives in opposite directions, through chain and toothed gears 20, 21, two outer frictionclutch members 9, which are selectively clutched to an internally-threaded sleeve 6 by a follow-up lever 22, pivoted at 23 on a casing 16, which is journalled on the outer clutch-members 9 and carries the motor 17. Engagement of either clutch 9 drives the sleeve 6 which screws along a fixed post 4, so that the entire casing 16 and motor 17 are traversed as a unit along the post 4. The forked lower end of the follow-up lever 22 operates the clutches 9 through a pin 26 engaging crossed slots in clutch-levers 25. Pins 30, 43 on the followup lever 22 engage respectively a longitudinal slot 31 in the follower-rod 2 and a notch 44, in a curved link 42, pivoted at 37 on the operating-rod 1 and linked at 39 to a link 33, pivoted at 34 on the follower-rod 2 and having at one end a notch engaging the follow-up lever pin 30, and at the other a slot 36 engaging with axial clearance the pin 37 on the operating-rod 1. In operation, movement of the operating- rod 1 manually in either direction, within the axial clearance of the slot 36, operates the follower-rod 2 mechanically, through the curved link 42 and follow-up lever 22, with a leverage represented by the ratio of the respective distances of the pins 43, 30 from the fulcrum-pivot 23 of the follow-up lever 22. The latter, at the same time, engages one or other of the clutches 9, which causes a power traverse of the casing and motor unit 16, 17 along the screwed post 4 in the appropriate direction, producing a follow-up movement of the follower-rod 2 through the pin 30 and link 33, which persists as long as operating pressure is applied to the rod 1, the clutch 9 being disengaged by the follow-up lever 22 as soon as the pressure ceases. Direct manual operation, without lostmotion, is provided by raising a lever 48 which, through swing-links 47, raises the links 42, 33, disengaging them from the follow-up lever 22, thus disconnecting the power source, and causing a narrower extension of the slot 36 in the link 33 to engage the pin 37 without axial clearance, whereby the operating and follower-rods 1, 2 are rigidly connected together.