Patent GB-190404387-A (GB)
Title: Improvements in or relating to Devices for Detaching Loads from an Elevator or the like.
Inventor: MACKROW GEORGE COLBY
Filed: 1904-02-22
Granted: 1905-02-16
Abstract: 4387. Mackrow, G. C., and Cameron, H. G. Feb. 22. Disengaging-devices; elevators; hoists; shoots; loading and unloading.-Relates to means for detaching loads from a moving elevator, hoist, or the like, more especially in connection with apparatus for transferring coal from one vessel to another, and comprises an arm capable of being operated at any desired point by the elevator &c. so as to overtake and detach the load hook and deposit it on a runway &c. for removal. The apparatus consists of a standard A, Fig. 1, carrying the elevator B or the like, and having vertically adjustable upon it a carriage C carrying the detaching device and one end of the delivery rail D. The load hook E, Figs. 2 and 3, has a part adapted tn engage an eye B<3> of the elevator &c., and an oppositely-directed part E<3> adapted to be engaged by the detaching device and to straddle the delivery rail D<2>. The detaching device is connected with a striking plate F vertically movable by engagement with the carrying link of the elevator chain. In one modification, the plate F is carried by links F<1> pivoted to the carriage C at F<3>, and to the plate F at F<4>. To the lower link F<1> is fixed a frame F<2> part of which, comprising a rail F<21>, extends at one end beyond the pin F<4>, while its other end abuts against the end of the rail D'. When the plate F is in its lower normal position, the frame F' lies in the position 1 when it clears the rising hook E. On the continued movement of the elevator, the plate F is raised, and as the extremity of the frame F', owing to its projection beyond the pin F<4>, moves at a greater speed, it overtakes the hook E, lifts the latter off the eye B<3>, and draws it clear of the elevator so that it can run down the rail F<2> on to the rail D'. The rail D' is pivoted in line with the lower pin F<3> by means of pins D<3>, D<5> so as to be capable of universal movement. In a modification, Fig. 5, the frame F' is replaced by an arm F<2*> the nose of which lifts the hook E off the eye B<3> and brings it into line with a fixed rail section D<3> on to which it is pushed by a lever H oscillated by the further movement of the eye B<3>. Premature movement of the hook off the arm F<2*> is prevented by a slot in the arm and by the plate F and a fixed guard G. The delivery rail, on to which the hook runs from the section D<3>, is carried by a frame J, Fig. 10, horizontally pivoted at K<1> in a frame pivoted vertically at C<6>. The rail D<3>, pivots C<6>, and other necessary fittings are duplicated on the opposite side of the carriage C so that the delivery rail can be mounted on either side as required, and the rail itself J<2> is made in duplicate so that the rail next the elevator is always used, a removable connection J<4> being provided between the rail J' in use and the section J<3> in line with the section D<3>. Where the outer end of the rail is supported at some height above the device, violent dropping of the load may be prevented by a shoot carried in a frame supporting the end of the rail and pivoted to the deck to allow for relative movement between the vessels, the lower part of the shoot being mounted on wheels resting on the deck.