Patent GB-119916-A (GB)
Title: Improvements in Bundling Presses.
IPC: B65H54/84
Filed: 1917-10-23
Abstract: 119,916. Greeves, J. & T. M., and Eves, R. V. Oct. 23, 1917. Baling-presses.-Relates to bundling-presses for yarns, of the kind in which the table is raised for the compression-stroke by driving-mechanism comprising a crank and connecting-rod, and consists in (1) driving-mechanism designed to reduce the height of the press, the table being, when at the bottom, at a distance from the floor of less than twice the stroke of the press, (2) automatic mechanism for opening and releasing the top straps or lid, and (3) other details. (1) In the press shown in Figs. 1 to 3, the driving-mechanism comprises a quadrant C which is connected to the table A by a pair of links D and is rocked through a right-angle at each operation. The arrangement permits the table to be placed low in the press, thus enabling the operator to fill the press without standing on a stool. The mechanical advantage increases during the stroke. The table A is formed with legs a which ride in guides b on the frame B and rest on the floor when the table is at the bottom. The quadrant-pivot c@ may be arranged at one side of the legs a or may be formed with necks to permit of the passage of the legs. The quadrant is driven by a pinion c on a shaft c<1> which is driven by a worm E on a shaft E<2> provided with fast and loose pulleys P, P<1>. The fast pulley P is engaged by a brake H, Fig. 1, carried by a weighted lever h, which is secured to a rock-shaft h<1>, and is provided with a roller in the path of an incline S<2> on the belt-shifter S. On the operator depressing a pedal S<1>, the belt is shifted from the loose to the fast pulley and the brake is released, the table being then raised. At the end of the stroke, the belt is shifted to the loose pulley and the brake is again applied to hold the table, by the engagement of a cam c<2>, Fig. 3, on the quadrant with a lever c<3> which is connected to the belt-shifter S. The table descends when the operator releases the brake H by depressing a pedal which is connected to the shaft h<1>, the worm E being reversible so as to permit the table to descend by gravity and without reversing the drive. A epring G, Fig. 3, in the path of the quadrant C cushions the table on the up-stroke, and on the down stroke it is cushioned by a spring G<1> connected to the quadrant. The spring G may be replaced by a counterweight. A stop-device may be provided for arresting the table before the down-stroke is completed, thus enabling the operator to fill in the first few rows of yarn without stooping. This device consists of detents h<2>; h3, Fig. 3, which cooperate with a catch h<4> on the shaft h<1>, and are controlled by projections h<6>, h<5> respectively on brackets secured to the table A. When the shaft h<1> is rocked by its pedal, the detent h<2> engages the catch h<4> and holds off the brake. In the descent of the table, the projection h<6> releases the detent h<2> and permits the brake to be applied. When the shaft h<1> is again rocked by its pedal, the detent h<3> engages the catch and the table descends to the bottom, the projection h<5> then releasing the detent h<3>. In a modification of the driving-mechanism, shown in Fig. 6. the table A is connected by a short rod D to a pin c'' secured to a pair of wheels C<1>. The rod works in a socket in the table and is provided with a strap d<2> for engaging the pin. The up-stroke and downstroke of the table are effected by driving the wheels two half-revolutions, the belt being shifted from the driving-pulley to arrest the table at the top or the bottom. (2) The top straps k, Fig. 2, are formed with depending lugs m<3> which have T-slots adapted to engage T-heads on latches M. The straps and the uprights K may be of hard wood, the hinges of the straps being bushed. The latches are carried by a shaft which can be rocked by a hand-lever, or automatically to release the latches. To permit of the latches being moved independently, they are mounted with lost motion on the shaft. The automatic releasing-mechanism consists of a cam m<1>, pivoted on the leg a and adapted to engage a roller r on a lever m<2> which is secured to the latch shaft. In the up-stroke of the table, a flange on the cam passes the roller, and in the down-stroke the flange engages the roller and rocks the lever m<2>, and the latches are released. In the down-stroke of the table, the latches are lifted automatically by a weight W which is secured to a lever N which is provided with a bar n<1>, passing through slots n in links k<2> connected to the strap. The lever N is operated by a roller n<2> on the ieg a. To facilitate tying-up, the table may carry at the rear a rail R, arranged to receive the ends of the bands. The rail may be roughened or covered with plush and may be arranged to have a greater stroke than the table. The loose pulley P<1>, Fig. 1, is preferably mounted on a separate bracket. A wheel for driving the press by hand is provided on the shaft E<2>. A shearing-pin, friction coupling, or the like may be arranged in the driving-mechanism. The worm E and wheel E' are provided with a casing e. The worm is preferably integral with the shaft. The frame B of the press carries a swinging crane O, Fig. 1, for lifting the bundle out of the press and lowering it to the floor. The bench of the press may be carried by brackets on the frame B.