B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
18/131
B29D 30/64 (2006.01) B29D 30/52 (2006.01)
Patent
CA 1188468
ABSTRACT OF THE DISCLOSURE There is disclosed a mechanical type or device, to suitably spread apart new tread rings to be applied on the carcasses of worn tires, in the retreading thereof. The device comprises, substantially, a base bearing a horizon- tally extending axially rotatable shaft at one end of which there is keyed a bevel gear wheel. The latter meshes with a plurality of bevel sprockets, which are located along a circumferential line and having perpendicular axes intersect- ing the axis of said bevel gear wheel. Each sprocket is mounted at one end of a round cross-section bar the other end thereof is provided with a threaded portion engaging with a nut screw formed in a block which supports cantilever- wise a rod. In operation, by rotating the horizontally extending shaft, the individual blocks jointly move along the threaded portion of their respective round cross-section bar thereby causing the related rods to move away from and towards one another.
421844
Gastaldello Giancarlo
Marks & Clerk
LandOfFree
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