Patent GB-190924956-A (GB)
Title: Improvements in or relating to Machines for Manufacturing Tyres.
Inventor: GAUTIER CLAUDE MARIE
IPC: B29D30/10
Filed: 1909-10-29
Granted: 1910-03-10
Abstract: 24,956. Gautier, C. M. Oct. 29. Tyres, elastic, special apparatus for making covers for.-Tyre covers made of separate transverse lengths of material, particularly of the kind formed of lengths of rubber-covered chain placed side by side, as described in Specification 12,861/08, are made by a machine in which carriers holding each length by its ends are moved downwards and inwards by cams so as to lay the length across the " former " and place its ends on the beads. Two rods C, C', Figs. 1 and 2, to which are fitted the carrier-arms E, F, are guided through the upper part of the frame B<2> at C<2> and connected to wires C<6>, so that they can be pulled downwards against a spring C<4> by operating the treadle D. The arms are moved in towards the " former " A as they descend by cams C<10>. Fitted to each arm is a carrier E<1> consisting of two plates held together by a spring cam-fastening E<11>, operated by a lever E'‹ so as to grip the wire hook H at the end of each length Y. The arm E carries, in addition to the part E<1>, a finger G pulled outwards by a spring but limited by a stop, a spring-pressed plunger P, and a second spring finger G<1> fitted with a flexible end. The arm F carries also a spring-pressed plunger J<2>, and two spring fingers J, J<1>. Fixed across the " former " is a mechanism, Figs. 2 and 7, for tensioning each length and holding it ready for positioning. A bent rod K<4> is pivoted at K<1> and pulled by a spring K<2> so as to force the end, K<3> outwards. A frame M<1> pulled by a spring M<3> weaker than K<2> and pressed down by the rod K<4> is formed with two rests M<4> at the extremities of its arms. In operation, a length Y is placed centrally against the extremity N of the part carrying the rod K<4>, under the part K<3> which is situated away from the " former," and in the rests M<4> which are situated towards the " former." The ends of the length are clamped in the carriers E<1>. A vertical plunger L, carried by bars fixed to the rods C, is now dropped by releasing a spring catch L<3>. This clamps the centre of the length under the part K<3> against the " former," and causes the rod K<4> to release the frame M', which brings out the rests M<4> and puts the length in tension. The treadle D is now depressed. The arms swing downwards and inwards. The lever E<10> strikes a stop 0 and releases the end of the length. Inside the clamp is a block with an end shaped to fit the hook so that it presses it closely against the bead fitted to the side of the " former." The finger G<1> with a flexible end is brought against a stop (not shown) so as to lessen its impact against a canvas lining, and slides across the stop and down the side face of the length so as to position it closely. The remaining plungers and fingers of both arms similarly serve to press on the front or side faces. The treadle is brought back on releasing by a spring D<2>. The rods and arms are returned by the springs C<4>, E<12>, respectively, and the plunger is lifted and held by the catch L<3>. The mechanism M<1>, K<4> is released, and the parts K<3>, M<4> are spread apart ready for placing the next length. For the purpose of shifting-on the " former," it is connected by means of worm gearing to a shaft S, Figs. 1, 8, on which is a ratchet-wheel P<3>. The ratchet is in two parts P<4>, P<14>, pressed outwards by springs P<6>, and is connected through a rod P' with the treadle frame D so that it operates on its return. The two series of ratchet teeth are relatively staggered so that an immediate engagement with the wheel is effected. Attached to the machine is a frame which carries a number of tyre lengths and is so formed that the next length slips automatically into a ready position as the end length is removed by hand. The frame B<2> is hinged at B<3>; and the wires C<6> are detachably connected so that the mechanism can be turned away from the " former."