Abstract 941,520. Fork lift trucks. BARRETTCRAVENS CO. Nov. 10, 1960 [Nov. 16, 1959], No. 38669/60. Heading B8H. The forks 12a, 12b of a fork lift truck extend transversely across the front of the truck and are mounted on a carriage which is movable along transverse guides 37 mounted on the lifting carriage on the mast 11. Each fork comprises an L-shaped member, Fig. 3, secured to a hub. member 15 which is rotatable on a shaft 18 secured to a plate 23, whereby the forks can be rotated through ninety degrees to extend to either side of the truck, the plate 23 being provided with rollers 32 which engage in upper and lower channel members 37 mounted on the lifting carriage. A stop-plate 26 engages the upright portion of fork 12a to prevent the horizontal portions of the forks from tipping downwardly. Upper and lower pinions on the shafts of guide rollers 32 engage racks, Fig. 4 (not shown), on bars 36 secured to the channel members 37 to maintain the rollers 32 in vertical alignment.
FOR USE IN A LIFT TRUCK HAVING AN ELEVATING MAST MECHANISM AND A MAST CARRIAGE MECHANISM, THE IMPROVEMENT COMPRISING LOAD SUPPORTING MEANS, A SUPPORT FOR SAID LOAD SUPPORTING MEANS AND ADAPTED TO BE CONNECTED WITH SAID MAST CARRIAGE MECHANISM FOR BEING RAISED OR LOWERED, SAID LOAD SUPPORTING MEANS BEING SHIFTABLE LATERALLY RELATIVE TO SAID SUPPORT, SAID SUPPORT COMPRISING MEANS SPACING APART AND SUPPORTING HORIZONTALLY A PAIR OF CHANNEL-LIKE MEMBERS WHICH ARE GENERALLY U-SHAPED IN CROSS SECTION AND HAVE THE OPEN SIDES OF THEIR CHANNELS FACING EACH OTHER, THE INNER SIDES OF SAID CHANNELS PROVIDING ROLLER BEARING SURFACES, RACK MEANS EXTENDING PARALLEL TO EACH CHANNEL MEMBER, AT LEAST ONE VERTICALLY DISPOSED SHAFT EXTENDING BETWEEN SAID CHANNELS AND CONNECTED WITH SAID LOAD SUPPORTING MEANS, ROLLER MEANS AND PINION MEANS FIXED ON EACH OF THE OPPOSITE ENDS OF SAID SHAFT TO RESPECTIVELY ENGAGE SAID ROLLER BEARING SURFACES AND SAID RACKS, WHEREBY TO RESPECTIVELY SUPPORT THE HORIZONTAL LOAD COMPONENT OF SAID LOAD SUPPORTING MEANS AND TO PREVENT COCKING OF SAID LOAD SUPPORTING MEANS AND MEANS PROVIDING SUPPORT FOR THE VERTICAL LOAD COMPONENT OF SAID LOAD SUPPORTING MEANS.
Claim 2
Dependent Claim
183 words
FOR USE IN A LIFT TRUCK HAVING AN ELEVATING MAST MECHANISM AND A MAST CARRIAGE MECHANISM, THE IMPROVEMENT COMPRISING LOAD SUPPORTING MEANS, A SUPPORT FOR SAID LOAD SUPPORTING MEANS AND ADAPTED TO BE CONNECTED WITH SAID MAST CARRIAGE MECHANISM FOR BEING RAISED OR LOWERED, SAID LOAD SUPPORTING MEANS BEING SHIFTABLE LATERALLY RELATIVE TO SAID SUPPORT, SAID SUPPORT COMPRISING MEANS SPACING APART AND SUPPORTING HORIZONTALLY A PAIR OF CHANNEL-LIKE MEMBERS WHICH ARE GENERALLY U-SHAPED IN CROSS SECTION AND HAVE THE OPEN SIDES OF THEIR CHANNELS FACING EACH OTHER, THE INNER SIDES OF SAID CHANNELS PROVIDING ROLLER BEARING SURFACES, RACK MEANS EXTENDING PARALLEL TO EACH CHANNEL MEMBER, AT LEAST ONE VERTICALLY DISPOSED SHAFT EXTENDING BETWEEN SAID CHANNELS AND CONNECTED WITH SAID LOAD SUPPORTING MEANS, ROLLER MEANS AND PINION MEANS FIXED ON EACH OF THE OPPOSITE ENDS OF SAID SHAFT TO RESPECTIVELY ENGAGE SAID ROLLER BEARING SURFACES AND SAID RACKS, WHEREBY TO RESPECTIVELY SUPPORT THE HORIZONTAL LOAD COMPONENT OF SAID LOAD SUPPORTING MEANS AND TO PREVENT COCKING OF SAID LOAD SUPPORTING MEANS AND MEANS PROVIDING SUPPORT FOR THE VERTICAL LOAD COMPONENT OF SAID LOAD SUPPORTING MEANS.