Patent GB-198782-A (GB)
Title: Improvements in or relating to apparatus for tipping railway wagons
IPC: B65G67/00
Filed: 1922-03-09
Abstract: 198,782. Mitchell, F. G., and Cowzer, T. March 9, 1922. Tipping-apparatus.-In a side-tipping tippler or tippler-hoist, the lateral support is moved towards the wagon by springs or by gravity when the tippler commences its movement, is locked automatically when in engagement with the wagon during further movement of the tippler, and is unlocked and disengaged from the wagon as the tippler returns to its original position. The invention also includes arrangements in which the lateral support is moved by hand-gear. As shown in Fig. 1, the lateral support g is carried on levers k which are pivoted to the tippler at k<1> and are connected by rods m to cranks n pivoted to the tippler at o. The support g is urged towards the wagon by springs r but is normally held in the position shown by levers t which bear against lugs on the cranks n and are held by the engagement of rods 2 with the stationary abutment 3. As the tippler moves away from the abutment 3, the levers t first move to permit rotation of the cranks n until the support g bears against the wagon, and then are moved further by springs u and in turning relativelv to the cranks n move the latter sideways, bringing clutch-teeth on the cranks into engagement with teeth on a bracket p and thus locking the lateral support g. On the return movement of the tippler, the engagement of the rods 2 with the abutment 3 first unlocks the clutch and then moves the support g away from the wagon. In modifications, parts corresponding to the members 3, t, p, n are arranged at the same side of the tippler as the lateral support g, the abutment 3 engaging either the lower end of a rod corresponding to the rod 2, or being arranged at a h'gher level to engage directly with the outer end of a two-armed lever corresponding to the lever t. In another modification, Fig. 19, the support g is carried on levers 10, tends to move towards the wagon by gravity, and is normally held in the position shown by a lever 15, which is held by the engagement of a roller 21 with the track 22 and engages a pin on a crank 12 connected by links 11 with the support. When the tippler moves, the lever 15 turns in the direction of the arrow z under the action of a spring 23 so that the support g engages the wagon, and further movement of the lever 15 turns it relatively to the crank 12 moving the latter radially outwards by means of an eccentric 14 on the spindle, so that teeth on the end of the lever engage a quadrant 13 on the carrier and lock the support g. The greater part of the locking and releasing mechanism may be enclosed in a casing formed in the web of the end-frame a<1> of the tippler. Fig. 22 shows an arrangement for moving and locking the support g by hand. The support g is pivoted on levers 25, 26, which are pivoted respectively on a fixed point 27 and on a slide block 26b on the tippler. The slide block is moved along the guide 26<c> by links 28 by means of a hand-wheel. In a modification, the support g, carried on levers such as 25, is moved directly by a screwed rod passing through a nut swivelled on the tippler. Specification 142,198 is referred to.