Patent GB-718432-A (GB)
Title: Improvements in or relating to ironing press apparatus for clothes, textile fabrics or the like
IPC: D06F71/02
Filed: 1951-08-02
Abstract: 718,432. Springs. TIDBURY, G. E. Aug. 2, 1951 [Oct. 25, 1950; Oct. 25, 1950], No. 18323/51. Class f08(3) [Also in Group VIII] In an ironing press (see Group VIII) comprising a lower pressing member 9 and an upper pressing member 30 carried by a manually operated arm 21 pivoted at 24 to a frame 1, spring actuated toggle means are provided for supporting the arm 21 in a raised position, and a handle 75 connected to the toggle means is adapted to be moved horizontally, when the arm 21 is in its lowered position, to change the direction of the spring action to force the upper member 30 against the lower. The toggle means comprises a spring 80, and two L- shaped levers 63 each pivoted (as at 60) to arms 22 depending from the frame 21. The toe ends of the levers 63 support a bridge pin 68 pivotally carrying a connector 69 for a pull rod 70 carrying the handle 75. A link 78 is pivoted at 77 to each lever 63 and the links 78 together support a shaft 79 forming an upper anchorage for the spring 80. The tension of the spring 80 can be varied by means of screws 81 bearing against the links 78 and mounted in a bar 64 connecting the levers 63. The lower end of the spring 80 engages a shaft 88 carried by arms 89 formed integrally with a barrel 15. The axial centres of the shaft 88 and trunnion pins 60 are arranged eccentrically to one another so as to prevent movement of the L-shaped' lever 63 and coil spring 80 from a stationary position. The barrel 15 has an eccentric hole 14 and is mounted on a bolt 12 connecting the sides of the frame 1. A flange 16 on one end of the barrel 15 has a pintle adapted to engage in an opening in the side of the frame. This permits adjustment of the barrel to bring the axes of the shafts 79 and 88 and pins 60 into one plane, with the arm 21 lowered and the handle 75 pushed back. By adjusting the rod 70 in the connector 69 a position is found such that the spring 80 suitably balances the member 30 in all positions. The end hooks 84, 85 of the spring 80 engage in grooves in ferrules 82, 87 mounted on the shafts 79, 88 respectively. The radii of the hooks 84, 85 are larger than their respective ferrules 82, 87 so that a rolling action takes place between the hooks and ferrules thereby varying the tension of the spring 80. Fig. 18, shows a modification in which the shaft 79 is rigidly fixed in the heels of the levers s 63, and the lower end of the spring 80 supports the nut 104 of a bolt 105 whose head 106 carries a spring 107 having a hook 108 which embraces the ferrule 87 on the shaft 88. The tension of the springs 80, 107 can be adjusted by means of a tommy bar inserted through an opening 109 in the bolt 105. In Fig. 19 (not shown), the lower end of the coil spring 80 supports the head of a bolt which is screw-threaded into the shaft 88. In Fig. 20 (not shown), the upper end of the spring 80 is suspended from a bolt passing freely through an opening in the shaft 79 which is made rotatable in the levers 63, the bolt receiving a nut which is adjustable to vary the spring tension. Specification 718,488, [Group VIII], is referred to. '