| 摘要 |
1,151,889. Fork lift trucks. EATON YALE & TOWNE Inc. 28 July, 1966 [17 Aug., 1965], No. 33933/66. Heading B8H. A load carrier 21 is mounted via a base-plate 14 having rollers 15, 16, for vertical movement on the uprights of an industrial lift truck, the carrier being coupled to the base-plate 14 by means of a scissors linkage 30, 40, 41. The latter comprises two parallel sets of scissor links, each of which comprises a link 30 housing a bearing 42 at its mid length position, and part links 40, 41, each of which has one end secured to the bearing but on opposite sides of the link 30. The end portions of the link 30 are displaced to opposite sides of the plane of the centre portion of the link, allowing the links to pass to over-centre positions when fully retracted. The links are mounted to the baseplate 14 and to a carrier support member 17 by pivots 33, 48a and slide bearings 32, 47. A pair of rams 51, 52 pivotally connected between the links 30 and the support member 17 effect the projection and retraction of the carrier 21. The latter is pivotally mounted on the member 17 for limited rotation in the vertical plane by means of a tilt ram 62 engaging the carrier via a ball 61 and slot 60. The carrier is also movable transversely of the support member 17 by means of a side-shift ram 19. |
