Patent GB-190610904-A (GB)
Title: Improvements in Machines for use in the Manufacture of Incandescent Electric Lamps.
Filed: 1906-05-10
Granted: 1907-02-07
Abstract: 10,904. British Thomson-Houston Co., [General Electric Co.]. May 10. Incandescent Lamps.-A machine for sealing leading-in wires into stems and for securing glass heatradiators in position on the wires in series lamps is shown in part sectional elevation in Fig. 1. On a table 1 is a hollow standard 2 on which is mounted a collar 7, movable vertically by means of an arm 8 pivoted to a weighted hand-lever 9. By means of ball-bearings, this collar supports a rotary sleeve 13 to which are attached a sprocketwheel 15 and a belt-driven pulley 14. Above the sleeve is a frame 17 which may be turned by hand to positions determined by the engagement of projections 57 upon it with a grooved spring arm 56. Mounted in this frame are a number of shafts 21, each of which carries a cross-bar 19, Fig. 3, uprights 20, and a plate 36. The glass stem 66 is held by jaws on the ends of slides 44, which are mounted on the plate 36 and provided with pins entering eccentric slots in a flat ring. This ring can revolve in a groove in the wall of a recess in the plate 36, and is connected by a link 38 and rod 39 to an arm of a sleeve 41, which surrounds one of the uprights 20, and is provided with a handle 43 for turning it and with a spring 42 for causing the jaws to approach each other. An arm 46, Figs. 3 and 7, is recessed to receive a piece 47 in which are guide-ways for sliding plates 48. Pins on these plates enter eccentric slots in a flat ring 49, which can be fixed by means of a set-screw. These parts serve for the adjustment of the relative positions of the leading-in wires 65 which, with the glass heat-radiating sleeves 64 loosely threaded upon them, pass through the opening between the plates 48 and rest on a disk 53. A screw 52 supports this disk and carries a spring arm 54, which engages in grooves on the tubular part through which it passes. The shafts 21 carry loose sprocket-wheels, which are connected 'to the wheel 15 by a chain 22 kept tight by a spring- supported idler. On the lower end of each shaft is a clutch comprising a spring-urged lever 25 connected to a pin 26, which normally enters a hole in the sprocket-wheel. In two positions, the shafts are arrested by the engagement of the levers with cams on rods 28, whith pass through guides 29 and are connected by arms 8 to the collar 7. In the third position, each shaft is free to rotate, so as to subject the glass parts to the action of a preliminary heater 55. In the fourth position, flames from blowpipe burners 3, 5 play upon the glass, the lever 9 being operated so that first the radiators are fused upon the wires and then the stem is softened. Rotation of the shaft being arrested by means of a cam on a rod 30, which is raised by a lever 35, a rod 34, and a pedal, the stem is pressed by pincers to seal it over the wires and attach it to the radiators. The pincers consist of jaws 60 operated by a button 61 and toggle links, the whole being carried by an arm 59. An extra burner controlled by a separate valve may be mounted beside the burners 5.