GB284328A - Improvements in or relating to mechanical toys - Google Patents

Abstract

284,328. Gilbert Co., A. C., (Assignees of Anketell, E. N.). Jan. 2R, 1927, [Convention date]. Model machines; mechanical constructions, details for building up.-A toy hoisting-mechanism comprises a pair of rotatably mounted winding- drums having a common driving shaft that is fixed to one of the drums and is axially movable relative to its mounting and to the other drum to connect and disconnect the one drum to and from the other. As shown in Fig. 1, a toy crane comprises a jib 23 pivoted at its lower end to a platform 11 rotatably mounted on a wheeled base 10. The jib is controlled by a cord 32 attached at one end to the head of the jib and wound at the other around a shaft 33, one end of which is cranked to form a handle and carries a toothed wheel 36 normally engaged by a locking pawl 39. The crane operates a grab, Figs. 1 and 6, comprising two jaws 41, 42 pivotally mounted on a shaft 43 carrying two pulleys 48, 49, and a pivoted weight 50. The jaws are connected by pivoted links 44, 45 to a frame 46 carrying a third pulley 47. The grab is supported by two cords 51, 52 passing over pulleys 27 on the head of the jib. The cord 52 is attached directly to the frame 46 while the cord 51 passes around the pulleys 48, 47, 49 in the order named and is then attached to the frame. The other ends of the cords are wound on drums 54, 55, Fig. 3, both mounted on a shaft 56 one end of which is cranked to form a handle 61. The drum 54-is secured to the shaft. The drum 55 is freely mounted on the shaft but is rotated with the drum 54 by the engagement of teeth 72, 73 formed on the adjacent flanges of the drums. The drums are disengaged by an axial movement of the shaft. The drum 55 is prevented from moving when disengaged, by a brake comprising a resilient member 77, Fig. 9, secured to the frame and engaging the groove in a pulley 75 secured to the drum. A plate 78 enters the groove in the pulley 75 to prevent axial movement of the drum 55. By manipulation of the handle 61, the grab may be opened or closed and raised or lowered in either condition. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification, Fig. 12, (Cancelled) in which three drums 90, 91, 92 are provided. The jib-control cord 32 is wound on the drum 90 and the hoisting and control cords 51, 52 for the grab on drums 92, 91, respectively. Gear wheels 115, 124 are mounted on the spindles of drums 91, 92 and are engaged by a pinion 129 on an axially-slidable operating shaft 126, the arrangement being such that the pinion is continuously in engagement with the wheel 124 but may be moved with the shaft into and out of engagement with the wheel 115. The drum 91 is provided with a brake similar to that shown in Fig. 9. The plates 96, 97 are provided with regularly positioned holes to receive the spindles and for attachment to a base-plate. The hoisting-mechanism may be applied to any toy in which such a device.is required. This subject-matter does not appear in the Specification as accepted.