| 摘要 |
1,061,696. Making metal panels; seaming; angular bending. LAMONT & RILEY Inc. Feb. 1, 1965 [Feb. 5, 1964], No. 4284/65. Headings B3A, B3E, B3J and B3V. [Also in Division B5] In a method of making an expansion joint cover, such as is used in buildings, strips, 103, of copper or like non-rusting metal are fed into a machine which cleans edge portions of the strips by wire brushes 106. A coating machine 107 applies primer, which is dried by infra-red lamps 108, to the cleaned portions of the strips and a lubricating device 113 applies lubricant preparatory to bending. The strips pass through a series of bending rolls 114-123 which, in conjunction with a wedge (136) (Fig. 35, not shown) fold over the portions 23, 25 and 22, 24 leaving the portions 20, 26 upstanding (Fig. 3, not shown). A crimping device 124 may be provided, if necessary. The strips are passed through a coater 125 where a contact adhesive is applied. An elastic strip 16 is fed from a reel 127 and coated at its edges with similar adhesive in a device (128) (Fig. 6b, not shown). The coated strips are partially dried and the strip 16 is laid on the portions 23, 24 (Fig. 4, not shown) in a bonding machine (131) (Fig. 6D, not shown). The strips are finally bent to the shape shown in Fig. 2 by bonding rolls (132) and press rolls (133-135) (Fig. 6D). |
