Patent GB-690870-A (GB)
Title: Improvements in methods and apparatus for assembly of radiators
Inventor: POLLARD LEONARD ARTHUR
IPC: B21D53/04
Filed: 1950-01-16
Abstract: 690,870. Making radiators. TRIANCO, Ltd. April 9, 1951 [Jan. 16, 1950], No. 1135/50. Classes 83 (ii) and 83 (iv). Seaming.-A method for the assembly of sheet-metal radiator elements comprises sup- - porting a section around its edge on a split platen, superposing a second section on the first section, traversing a seaming tool around the edges of the sections so as to turn the edge of one section over the other, opening the split platen to allow the joined sections to pass through and closing the platen to repeat the process with succeeding sections. A radiator according to the invention comprises an end section 1, a plurality of intermediate sections 2 and a final end section (not shown). The intermediate sections comprise two pressings each having bosses 3 which are welded to connect the sections together and space them apart. One pressing has a peripheral flat flange 4 and the other a peripheral groove 5, for receiving a plastic or other sealing medium 9, and an upstanding flange 6. The first and final end sections each have two bosses 7 into which are brazed connecting members 8. The first end section has a peripheral groove and an upstanding flange as in the intermediate sections and the final end section has a flat flange. A machine for assembling the radiator comprises a main platen 10 supported on tubes 11. The main platen carries a split platen 12 the two parts of which may be separated by left and right hand screws 13 driven by chain gearing 14 and a handle 15. When closed, the split platen embraces and supports the radiator section which is located on the platen by strips 16. The split platen can be opened to allow the section to pass through it and through a hole in the main platen on to a spring-loaded support 17. Above the split platen rollers 19, 20-carried in holders 21 are mounted on posts 22 which are guided between lower cam-plates 23, 24 and upper cam-plates 25, 26. A roller 28 rotatably mounted on each of the posts 22 bears against the under-surface of the lower cam-plate 23 to take up thrust. The holders are moved between the cam-plates by chains 30 attached to the posts, these chains being driven by sprockets 42 rotated by a motor 32. The rollers 19, 20 are eccentrically mounted in the holders and may be adjusted relatively to the work by rotating a feed adjuster 37. A pressure pad 38 operated by a hand or power-operated ratchet-lever 39 holds the sections firmly on the platen. A safety-switch (not shown) prevents the motor starting until the split platen is closed. In operation, the first section 1 with the sealing medium 9 in its peripheral groove 5 is placed on the closed split platen 12 with its flange 6 upstanding. An intermediate section 2 is then placed on the first section with its flat flange 4 inside the upstanding flange 6 of the first section. The pressure-pad 38 holds the sections in position. The motor 32 is started and as the roller 19 comes to the front of the machine by manipulation of the feed adjuster 37 the roller bends the flange 6 through 45 degrees. The second roller 20 is similarly operated and completes the seaming of the section. The split platen is opened so that the sealed sections pass through it and rest on the spring-loaded support 17 after which it is closed and another section placed on it. This process is repeated until all the radiator elements are assembled. A rope tackle 43 holds down the support 17 to facilitate removal of the assembled radiator.