Patent GB-189812225-A (GB)
Title: Automatic Tire Setting Machine.
Inventor: ALLISON CHARLES ARTHUR
Filed: 1898-05-31
Granted: 1898-08-27
Abstract: 12,225. Allison, C. A., [Tire Setting Machine Co.]. May 31. Building wheels ; tyres, non-elastic.- The Figures show a tyre-setting machine, in which a series of straps B are coiled upon themselves and embrace a sectional band C, the segments of which are slidably connected and are separated by springs 31 ; this band is made to press against and compress the tyre. The straps are connected at one end to the frame A, and at the other to a sliding piece I by means of wedges 68 an d 67, the former being actuated by means of a spindle 87, screwthreaded to engage with a collar 75 pivoted to the lugs 74, and having a rounded shoulder 90 and square part 89. The wedge 67 has shoulders 69 and lugs 70. The said slide is actuated, to tighten or loosen the straps, by means of a toggle H, one end of which is attached thereto, and the other to a web 3 of the frame A. The upper and lower blocks 58, 59 of this toggle engage right and left handed screw threads on a spindle 60 carried by a sliding frame L. Motion is transmitted from the pulley 117 to the pinion 101 riding loose on the spindle 60, to which it gives a quick motion when the clutch 107, attached to the lever 111 pivoted at 112, is lowered, while it transmits a slow motion through the gear-wheel 104, shaft 100, and gear-wheels 99 and 98, when the clutch 108 is lowered. A vertical rod 156 oscillated by an operating-lever 155 is made to control the direction and duration of motion of the pulley 117. To tighten the band, the lever 155, normally held centrally by a spring 158, is swung to the left, where it is retained by a catch on the hand-lever 149. When the band is sufficiently tight and the wheel sufficiently dished, the hub raises the holding-plate 120, attached to a lever 135 pivoted at 136, which engages a stop on a lever 146, pivoted at 148, which in turn depresses the lever 149 and its catch and releases the lever 155 so that the machine is stopped. To loosen the straps, the lever 155 is moved to the right and is held there by a catch on the hand lever 150, and the machine is stopped when an inclined lug on the toggle raises the set-screw 161 on the lever 147, which then depresses the lever 150. The plate 120 is adjustable vertically by means of a screwed spindle engaging with the rod to which it is socketed, and horizontally by a rod 126, being slidably connected to a sleeve 133 pivoted to the lever 135 ; provision is also made to turn the head 123 into and retain it in a horizontal position, the latter being effected by cross-grooves, a pin, and a spring. To regulate the pressure at which the arm 135 rises, a housing embraces the arm, and within it is a band screw pressed against it by a spring, the compression of which is adjusted by a nut on the screw held against rotation by the housing. On the yoke J, pivoted to the slide I, is mounted a frame K carrying a fixed roller 76 and a roller 77 mounted on a slide 78 actuated by a spindle 80. When it is desired to shorten or lengthen the straps to suit a new wheel, the wedges 67 and 68 are removed and the rollers 76 and 77 tightened together, when the wheels 84 will gear, and by turning the handle 86 the rollers will draw the straps therethrough. The straps have lugs 9 which engage grooves in the plates 1 and 2, at the end of which are cast steel blocks, and to this end of the straps is secured a plate 13 and lugs 14, to which is pivoted a brace rod 15 passing between lugs 17 and adapted to be tightened by a nut 18. Within the first section C' of the band is placed an inside forming-plate F, to which is pivoted a rod 40 passing through the frame and adapted to be tightened by a hand-nut 44. An outside forming-plate G is pressed against the straps on turning the spindle 55 by the action of the nut 53, arms 52, and cam 47. By an eye 35 swivelled to the frame A is supported an extension E, which has a hinged joint at its outer end which carries a supporting-leg. This extension serves to carry the outer part of the straps. The wheel is supported on rests D, which partly enclose the straps and band. The part 23 is separated from the rest and slides thereon, being actuated to grip the straps and band by means of a screw 25 passing through a lug therein and engaging with another lug on the other part. There is a groove 66 in the slide I for the passage of the straps, and in the yoke J there is a tapered opening 92.