Patent GB-190906556-A (GB)
Title: Improvements in or relating to the Manufacture of Incandescent Gas Mantles.
Inventor: MULLER JEAN LEON
IPC: F21H3/00
Filed: 1908-03-20
Granted: 1910-02-17
Abstract: 6556. Muller, J. L., and Bonnet, J. March 20, 1908, [Convention date]. Mantles ; burners ; regutating. - Relates to machines of the kind described in Specification 24,218/01 for calcining incandescent mantles, previously impregnated. In the improved machine, which is similar in arrangement to the former machine, the mantle is successively singed at the upper portion, singed at the bottom portion, incinerated in three stages, calcined and finally burned at the head, cut at a variable height, soaked in collodion, and dried. The mantles are carried by hooks 1 secured to rods 2 guided by upper guides K and lower guides K<1>, at the sides of the machine, the bottom portion of each mantle engages a part 65 supported by guide-rods 3. The rods 2, 3 are intermittently driven along the guides by tappet.s secured to chains I. Fig. 4 shows the mechanism for intermittently reciprocating a cambar 0, which controls the driving of the chains I. A pivoted beam 6 is oscillated by means of an arm 5 and an eccentric 4 on the shaft E. At each oscillation, a rack 10 is raised through one tooth by a spring pawl 9. When the rack 10 reaches the top of its travel, a stop 13 thereon engages a catch 15 and allows a part 16 pivoted to the cam-bar 0 to drop and engage a cross-bar 18 in the forked end of the beam 6. The bar 0 is thus reciprocated once. A cam 19 on the bar 0 strikes a tenon on the pawl 11, and the rack 10 falls. When the bar 0 returns, the part 16 is disengaged from the beam 6, which pushes the bar 0 to its initial position. Each of the chains I is driven from an eccentric 27 on the shaft D, Fig. 5, which reciprocates a rod 28, to which is secured a chain wound on a drum 29. A drum 30 on the same spindle is connected to a chain bridge 31 by means of a chain 32, so that the bridge 31 is continuously reciprocated. When the bar 0 moves to the left, a rod 41 is raised by a cam 43, and a roller 39 in the end of a bell-crank lever 38 releases a spring pawl 34 on the bridge 31, allowing the pawl to engage and drive the chain. On its return, the pawl 34 is re-engaged by the roller 39. When the rods 2, 3 in the upper guides K approach a pair of "elevators," L, they pass below the path of the chains I, and are pushed, one at a time, into the heads 51 of the elevators by pawls 54 on a slide 53, operated by a pawl-bar R and a balance beam 52. The bar R is reciprocated by means of chains and a third drum on the spindle of the drums 29, 30. The head 51 is fixed on a rod 47, reciprocated from the cam-bar 0 by drums 46, 46<1> and chains, and carries the rods 2, 3 down to the lower guides K<1>. The elevators L each consist of a pair of pivoted shutters, which open as the supports slide between them, and are closed by a spring 50. The rods 2, 3 arriving at the lower position are released, and are carried along the lower guides K<1> by the chains, and stop in position for the various operations. At the first position, the mantles are taken from mandrels and are hooked on the pins 1. In the second position, the upper portions of the mantles are singed by a rack N comprising a transverse bar carrying short links 71, 72, Fig. 10, on which are pivoted two gas-pipes 76. To the pipes are secured circular burners 74, each in two parts secured respectively to the two gas-pipes, so that the movement apart of the pipes by a lever 75 moves the two sections of each burner apart to admit a mantle. The lever 75 is mounted on a rock-shaft 82, Fig. 37, connected by links to a spindle 77, and the fall of the incinerating-rack P operates the spindle 77 by means of a drum and chain. To ensure the sufficient separation of the burners, a projection on the cam-bar 0 may operate a device for this purpose. The burners move together and enclose the mantles, and separate again to allow the mantles to pass on to the second singeing - rack N', comprising divided circular burners, which singe the mantles at the base, and are adjustable in height. The next rack P, for incinerating the mantles from the interior in three stages, consists of three rows of vertical burners rotated by suitable gearing, and adjustable in height. The mantles are carried above the first burners of the rack P while the rack has dropped to its lowest position by the release of a catch 143 by a cam 142 on the bar 0, Fig. 22. The rack is raised and lowered by cams 124, 125 on the shaft E, of which the cam 124 acts upon a pivoted lever 127 and an adjustable roller 129 to ra:.se a frame 132, a part 133 on which engages a part 123 on the rack P. The cam 125 supports the rack when released by the cam 124. The operation is repeated when the mantles come above each of the other two rows of burners. The next rack N<11>, for calcining and burning the heads, comprises divided circular burners 148 for burning the heads, and vertical burners 144 secured to a vertically-ad,justable pipe 145, Fig. 24. The two tubes carrying the divided burners 148 are driven apart to admit the mantles by a balance beam, and balance weights close the burners 148 and raise the burners 144. After the calcining, the mantles pass to the knife rack, and are trimmed by knives 173 secured to spindles 172, Fig. 27. During the forward motion of the cam-bars 0, double plates 178 operate mechanism which " cocks " the knives 173 by engaging a projection 171 on the knife spindle. On toe return of the bars 0 the knives are released and are operated by helical springs 191. The waste is removed by brushes to a hopper. On passing the knife rack, the rods 2, 3 reach the central elevators. The ends of the guide-rod 3 are pushed by pawls on the bar R into the head of the elevator, which raises the rod 3 to the upper guides K. The supporting-rod 2 is retained in the lower guides by a lock device, and then released and carried forward by the chains to the cooling positions. The mantles than pass to the collodion rack, Fig. 32, consisting of a box 203 enclosing vessels 209 carried by a cross-bar 210 aid connected by a glass pipe 213 provided with an inlet and an overflow The vapours disengaged by the dripping are retained by a box 215 and drawn on by a fan. The box 215 is lowered into the box 2J8 to admit the mantles, by means of a link 233 and a lever 234, Fig. 1, operated by cams 235 on the bars 0. A pawl 238, pivoted on the bar 0, then releases weighted levers 240, 241, which bring the parts 222, 217 into engagement, and the boxes are raised by the cam 219 acting on the part 217. The mantles are thus dipped in the vessels 209, and the box 208 descends and the pawls 240, 241 disengage the parts 222, 217. The rods 2, on being carried forward, are disengaged from the chains I by means shown in Fig. 34. A rod V, operated by a cam 244 on the bar 0, raises a grip which lifts the rods 2 from the groove 246 to a higher groove 247. The rods are then advanced by a pawl 249 on the bar R, and push one another througb the drying-chamber. On leaving the drying-chamber, the mantles are unhooked and placed in tubes, and the rods 2 are carried up one at a time by the back elevators to the upper guides K. The front, central, and back elevators operate simultaneously. Figs. 37 and 38 show the gas-distributing mechanism of the racks. Gas is admitted by a pipe 261, and cocks 268, 270, 272, 274, 276, are operated respectively by rods 263, 264, 265, 266, 267. When the mantles leave the hooking-on position, the burners of the different racks are burning only through by-passes 284, 286, 288, and the cocks 268, 272, 274, 276, are open. When the circular burners of the rack N close on the mantles, the cock 279 is operated through a spindle 82, connecting-rods 314, 315, and a spindle 317. As the tooth rack 10 rises, a stop 319 thereon strikes a finger 320 and closes the cock 279 by means of levers 322, 323, 324. The cock is held in closed position by a pawl 326, aud the balance weight 328 returns the levers to their initial position. The cock 282 of the second rack N<1> is hand-operated. When the mantles arrive over the rack P, the upward movement of the rack causes a part 304 to engage a roller 305 of a lever 302, disengaging a roller 301 from a notch in the lever 299, and allowing the cock 285 to be operated by the balance weight 295, connected by a chain 306 to the lever 299. During the upward and downward movement of the rack, the aperture of the cock is varied by means of a cam 289 driven by a worm on the shaft C. This cam has a groove, in which travels a roller 293 on a ]ever 292, connected to the lever 299 by a shackle 296 and a rod 297. The same operation is repeated for the two other racks of the treble rack P. The mantles then pass above the rack N<11>, the circular burners 148 being open, and the burners 144 lowered. The burners 148 close on the mantles, and but at full by means of the mechanism supplying gas to the rack N, and the cock 287 supplying the burners 144 is operated from the spindle 77 by means of levers 311, 312, 313.