Patent GB-403215-A (GB)
Title: Improvements in or relating to the supply of wires e.g. filaments for electric lampsor discharge tubes, towards a point of operation
IPC: B65G47/91
Filed: 1932-11-04
Abstract: 403,215. Attaching electric incandescent lamp filaments. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Nov. 4, 1932, No. 31161. Convention date, Nov. 28, 1931. [Class 39 (ii).] In a device for feeding wires, such as filaments for electric incandescent lamps or discharge tubes towards a point of operation, such as the mounting position, a movable gripper is arranged as a templet which forms the wires into the necessary shape while being gripped and conveyed therein. The gripper 7, Fig. 1, comprises a vacuum cup 1A at the lower end of a hollow rod 5 connected to a flexible exhausting- tube 9 and mounted on a bar 6 connected at 14 to a vertical rod 13 which, by mechanism not shown, is moved to-and-fro in a direction parallel to itself and is simultaneously given a vertical movement such that the point 14 moves through the path P, Q, R, S, Fig. 2. Vertical guides 1B on either side of the gripper 7 are secured to a crossbar 11 which is apertured to fit over the rod 5 and carries a vertical rod 12 guided through an aperture in the bar 6 and surrounded by a helical spring 10. A roller on the underside of the crossbar 11 moves along a curved guide rail 27 during the to-andfro movement of the rod 13, thereby causing a vertical movement relatively to the vacuum cup 1A to be imparted to the guides 1B. In operation the gripper &c. are moved into the upper forward position R above an endless conveyer 4 driven by a ratchet mechanism 15, 16 and carrying filament wires 2 disposed transversely therein within grooves 3, the wires being fed towards a needle or finger 17 at one end of a lever 19 mounted so that its other end 19B is vertically below a rod 21 carried by the bar 6. When the rod 13 is moved downwardly the end 19B of the lever is depressed by the rod 21, thereby lifting a filament towards the vacuum cup 1A, where it is held. The rod 13 is then lifted vertically and subsequently moves rearwardly through the arc R Q, Fig. 2, whereupon the roller runs down the rail 27 and the guides 1B move downwardly, drawing the ends of the filament with them. The filament ends are now disposed above funnelshaped apertures 28 formed at the division of two relatively movable blocks 29A, 29B, the block 29B being pivoted freely between shafts 35, 36. The rod 13 is next depressed so that the vacuum cup 1A is lowered and the ends of the filament are pushed into the apertures 28, where they are gripped between clips 31 and lugs 32, Fig. 4B, carried by the member 29B, and controlled by studs 33 on a rocking member 34 secured on the shafts 35, 36. The vacuum is now cut off, and the member 34 is swung anti-clockwise by a pinion 38 on the end of shaft 36, the engagement of the lugs 33 with the clips 31 causing the member 29B and the filament to be carried around until the clips are opened, whereupon the ends of the filament are received in vacuum cups 46, Fig. 1, mounted on a carrier 45. The member 45 then swings around to position the ends of the filament within the hooked ends of pole wires 48, where they are clamped by a clamping-device 47.