| 摘要 |
1,153,081. Wheel chocks. LAYCOCK ENG. Ltd. 8 Dec., 1967 [16 Feb., 1967], No. 7562/67. Heading F2E. A wheel chock mechanism comprises a pair of chock body members 11, 12 secured together in spaced relationship with their inclined wheelengaging portions opposed to each other, one, 12, of the body members being provided with a pressure member 18 movable relatively to that body member towards and away from its base and formed with one or more floor contacting members 19 and means mounted on that body member for applying pressure to the pressure member so as to cause a reactionary force to be applied to the wheel through the wheel-engaging portions. In the embodiment, the pressure member 18 comprises a plate carried by a pair of pins 19 passing through the base of member 12 and which are provided with conical ends for engagement with the floor. Pressure is applied to pressure member 18 by means of a cam 22 carried by a cross-shaft 23 and operated by means of a handle 24. The second chock body member 11 is provided with a pair of fixed pins 21 with conical ends for engagement with the floor and is attached to the first chock body member by means of a shaft 14 which is attached by means of a grub-screw 16, to a boss 13 formed on chock body member 12; it is adjustably attached to the second body member 11 by means of a boss 13 provided with hand adjusting screw 17. |
