Reinforced structures
AssigneeW & A Bates Limited
InventorsGeorge K. Bailey, Eric Holroyd, Anthony R. Wright, David J. B. Perkins
Life of this patent
Estimating the term…
Abstract
An apparatus and method of manufacture for making tire breaker cord fabric comprising a tire cord laying head to lay a zig-zag assembly of a single cord, edge loop holding units and drive means for relatively moving the cord assembly to an elastomeric material coating device.
Claims25
Apparatus for making a tire breaker fabric comprising an elongate sheet of tire cord fabric embedded in elastomer in which the cords extending across the sheet are formed by one single continuous tire cord which extends back and forth across the sheet so that the edges of the sheet are formed by a series of folded cord edges, the aparatus comprising
- (a) a pair of parallel spaced apart edge holding and retaining units;
- (b) each edge holding and retaining unit comprising a plurality of longitudinally spaced retractable holding pins attached to endless belt means;
- (c) a tire cord laying head for laying one single continuous tire cord to and fro between said edge holding and retaining units;
- (d) stepwise drive means for effecting relative movement between said endless belt means and said laying head in the direction of the length of said endless belt means so that said laying head lays said tire cord around a respective holding pin to form a continuous elongate cord assembly the edges of which are formed by a series of folded cord edges;
- (e) means for applying elastomer to said cord assembly to produce tire breaker fabric;
- and
- (f) means for moving said holding pin to withdraw said holding pins from said tire breaker fabric.
A method of manufacture for tire breaker fabric comprising a single tire cord having a zig-zag lay in the fabric, wherein the method comprises;
- feeding tire cord to a cord feed guide, propelling the feed guide in a first direction across the space between a pair of spaced apart edge holding units each including a plurality of longitudinally spaced retractable edge loop holding pins;
- moving the feed guide and the holding pins relative to one another in a direction perpendicular to the feed guide first direction of movement so that the cord is laid around a pin at one side of the space;
- propelling the feed guide back across the space in the reverse direction to the first direction;
- moving the feed guide and the holding pins relative to one another in a direction perpendicular to the feed guide reverse direction of movement so that the cord is laid around a pin at the other side of the space;
- repeating the above steps to produce a sheet of zig-zag assembled cord;
- applying elastomeric material to a side of the assembly and withdrawing the pins from the edge loops.
Dependencies are inferred from the claim text.