Patent GB-190314475-A (GB)
Title: Improvements in Packeting Machines for Tea and Cognate Substances.
Inventor: LEITCH WALTER
Filed: 1903-06-29
Granted: 1903-11-26
Abstract: 14,475. Leitch, W. June 29. Packeting and filling tea &c.-Relates to a machine for filling paper bags with tea &c., and closing the bags. The bags are placed in moulds b, Fig. 6, on a table a, which is rotated intermittently about the spindle d by the ratchet-wheel g and pawl h, Fig. 3, pivoted to the arm i. This arm is connected by the rod j to the lever k, operated by the cam n on the shaft o The spring n<1> holds the lever k in contact with the cam. The tea is fed into the funnel 12, Fig. 5, and falls into the bag through the lower funnel p. The funnels telescope and are movable vertically. Grippers q, q<1>, fixed and pivoted, respectively, to the funnel p, hold and release the bag. The grippers q<1> are cranked and are pivoted to rods s, the weight of which tends to keep them in the position shown in Fig. 5. The funnels descend when an empty bag is brought into position, and the lugs s', pressing against the guide t, cause the grippers to drop and seize the bag. The support u is reciprocated and shaken by the rod w operated by the cam x<1> on the driving-shaft x, which is provided with a clutch pulley y, or fast and loose pulleys. The worm z on the shaft x gears with the worm-wheel z' on the spindle o, which carries the pear-shaped cam o' engaging the lever 1 pivoted at 1<a>. This lever reciprocates the spindle v, fastened to the crosshead 11, to which is fixed the funnel 12. The rod 13, fixed to the crosshead 11, projects through both funnels and carries a presser-foot 15, which presses the tea in the bag after the shaking which accompanies the filling. The spindle v, in descending, carries downward the pivoted lever 16, the tooth 17 on which strikes the sleeve 14, swings aside, and descends further. The foot 15 descends at the same time. When the parts v, 11, 13, 15, 16 rise, the tooth 17 catches under the bracket 14<a>, and lifts the funnel p clear of the bag. The tooth 17 is caused to catch under the bracket 14<a> by the weight of the rod 18 pivoted to the lever 16. The end of the rod engages bevelled projections 19 on the edge of the table a, which raise it slightly and allow the tooth 17 to clear bracket 14<a> in descending. The intermittent motion of the table is obtained by means of the cam-wheel o<1> and the roller 23, connected to the clutch pulley y. On the edge of the table, opposite each mould, are bevelled recesses 20 engaging bevelled pins 21 actuated by springs in recesses in the sockets 22. The motion may be re-started by a suitable pedal y', or by electrical or mechanical connection. In the second position, the bag comes under the operation of the folders, which close the top. The spindle 28 revolves through an arc of a circle, to operate the folders, by means of the cam 34, lever 31, rod 30, and arm 29. To the spindle 28 is attached the cam 35, Figs. 8, 10, and 12, engaging the roller 36, which, by means of the pivoted arms 39, 40, slide the bar 38 in the guidef on the fixed bracket f<1>, Fig. 6. The folders 43, on sleeves 41 attached to the bar 38, first move towards the cam 35, folding down one side of the bag. The rods 44, pivoted to the stems 42 and to the lever 45, cause the roller 37 to engage the exterior surface of the cam 35, thereby opening the folders, as shown in Fig. 12, and forming two projecting ears at the top of the bag. Round the spindle 28, is a loosely-fitted cam 50 having a slot engaging a pin 51 on the lug 52 on the spindle. This pin causes the cam to push the levers 49, which depress the plate 48, folding down the remaining side of the bag. The folders 43, in returning from the position shown in Fig. 12, fold the two ears over the plate 48. The folders then open, and the plate 48 is lifted by the spring 48<a>. The bag can now be easily fastened with a gummed label by the attendant. In the next position, the mould comes over the ejector 5, which engages the socket in the movable bottom 8 of the mould and wholly or partially removes the bag. The ejector is operated by the lever 4 attached to the spindle v.