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    • 3. 发明专利
    • Improvements in and relating to Bolt-screwing Machines.
    • GB190815048A
    • 1909-07-01
    • GB190815048D
    • 1908-07-15
    • HILL ALFRED JOHNMCDERMID WILLIAM FRANCIS
    • HILL ALFRED JOHNMCDERMID WILLIAM FRANCIS
    • 15,048. Hill, A. J., and McDermid, W. F. July 15. Screwing.-In an automatic machine for screwing bolts of the type in which a rotary work turret is mounted on a slide, the motion of the slide is controlled by a crank disk or the like rotated by a pawl, which is put into engagement with a continuously revolving ratchet-wheel &c. by the movements which open and close the screwing-dies. A ratchet-wheel a mounted on a shaft a rotates a drum f by engaging a spring pawl e, the drum rotating a cam, eccentric, or crank d through mitre-gear g. The axes of the crank and ratchetwheel may be in line. Overrunning is prevented by the provision of a ratchet-wheel f Fig. 4, on the drum engaging a pawl a on the ratchet a. The crank may be of adjustable throw, or it may be connected to the slide u by an adjustable rod m, a rod k, and a lever l having a slot l to take the rod k. When cams are employed the connecting-rod is replaced by rods provided with rollers and sliding in guides. The crank is set in motion when the screwing-dies are opened through tappets and links j , j , j , j, which, through a rod h and links h , move the roller stop h out of contact with the pawl e. The slide u is thus moved backwards against the action of a spring in the casing s until the bolts are clear of the dies, when the attachment n to the rod m carrying a roller n' presses down a plunger pawl o or cam, Fig. 3, into contact with an adjustable bar on the machine bed formed with a notch o , at the same time moving the spring pawl p out of contact with the turret. On further motion of the connecting-rod, the attachment n rotates the turret by means of a drag-pawl. Towards the end of the motion of the rod m, a cam on the shaft d acts on a lever k to move the roller h into contact with the pawl and stop the crank d, the dies at the same time being closed, while the attachment n abuts against a stop t, which releases the pawl o from the pressure of the feed-spring. The spring p thus moves the pawl out of contact with the notched bar o' and the pawl p into contact with the turret. The feedspring then returns the slide u. The automatic movements of the parts may be suspended by a cam v operated by a thumb-piece to press down the pawl p, and compress a spring o which forces the pawl o into the notch in the bar. The slots q in the turret may be shaped to engage flats on the bolts, the heads of which are held up to the dies by pieces inserted in the turret. For holding bolts without flats, the bolts are passed through serrated holes in blocks z, Fig. 8, which are fixed in the turret. A rest x provided with clips x may be used to support long bolts. The bolts may be removed from the turret by hand or by a cam or lever on the slide u engaging a stop or roller on the bed. According to the Provisional Specification, overrunning of the ratchet is prevented by a catch on the crank disk or cam.
    • 5. 发明专利
    • Improvements in Brake Apparatus for Vehicles, such as Railway Wagons and the like
    • GB190718130A
    • 1908-07-09
    • GB190718130D
    • 1907-08-10
    • HILL ALFRED JOHNMEIN THOMAS OSWALD
    • HILL ALFRED JOHNMEIN THOMAS OSWALD
    • 18,130. Hill, A. J., and Mein, T. O. Aug. 10. Brakes.-In railway-wagon and like vehicle brakes operated by a lever on one side of the vehicle, means which are unaffected by wear of the brake parts are provided for indicating at the other side whether the brakes are off or on. A transverse rod a, sliding in a guide b, has one end bent to form a bridle f, which fits over the hand - lever d, so that as the lever is moved from its rest when the brake is applied the rod a is moved horizontally. The other end of the rod may itself form an indicator or it may be connected by a bell-crank lever to a longitudinal rod which operates a rocking shaft k provided with a pointer n adapted to move over marks on the side frame or on a separate plate. In a modification, the bridle f is pivoted to a bracket on the side frame and the rod a connected to its lower end, the bell-crank being reversed. A spring or weight may be used to retain the bridle f in its outer position when the brake is on. Fig. 7 shows a modification in which the rod a is connected by a bell-crank p to a vertically.moving rod q, the indicator being normally retained in the ' off' position by the weight of the lever d on the rod q, and moved to the ' on' position when the brakes are applied by a tension spring r. Fig. 9 shows another form, in which the rod a is free to turn and operate the pointer n directly, the pointer being moved into the on' and ' off' positions respectively by a counterweight s, and by the lever d acting on a crank a on the rod. In the arrangement shown in Fig. 10, the pointer is mounted on a rocking shaft x moved by a longitudinal rod a, placed above or below the brake shaft t, to which it is connected by an arm w engaging a fork or a pair of projections u on the rod. Should the arm w move farther than is necessary owing to wear of the brake blocks, it becomes disengaged from the projections u. Fig. 12 shows a modification in which the shaft x is connected by a link x to a rod a connected by a similar link y to a locking shaft y' having a crank y at its end. The crank y is kept raised by the lever d when in the 'off' position, but when the brakes are applied, the weight of the rod a brings the links x, y into a vertical position, thus moving the pointer. Flexible wires may be used for elements in tension or for those which may be replaced by tension members with slight modifications,