Patent GB-190406391-A (GB)
Title: Improvements in or relating to Presses.
Inventor: MARSHALL ALFRED
Filed: 1904-03-16
Granted: 1904-08-25
Abstract: 6391. Marshall, A. March 16. Embossing.-In presses for embossing in gold, silver, and the like, the chase carrying the die or type slides on a carrier whereby it may be removed from the firebox and brought opposite the feed table and platen which are successively raised into contact with it. In a modification, the chase can be swung down on to the feed table and in another form, the chase is fixed to a pivoted arm by which it can be brought into alignment with either the firebox or the feed table. The type or die 2 is held in the chase 5 by means of a screw, and the chase is supported from the firebox 6 by means of grooves. A carrier 15 projects laterally from the firebox, and on this the chase can slide by means of projecting strips which embrace the edges of the carrier. The firebox 6 is supported by studs 9 which pass through the frame of the press and which are held by springs 8 and nuts 10. Chambers are formed in the firebox to receive perforated gas pipes 11 or other means for heating. The chase is adjusted relatively to the platen 4 by means of the springs 8 and nuts 10, and also by means of wedges which are inserted in tapered grooves formed in the underside of the part 7<a> of the frame. These wedges are forced in by means of screws or the like, and bear against the upper side of the firebox. The chase may be moved along the carrier 15 either by hand, or by the action of a bell-crank lever 16, Fig. 1, connected by a rod 17 with a foot-lever. The other arm of the lever 16 has a cam edge which bears against the curved arm 19 of a pivoted lever 20 which is connected by a link 21 with the chase. Plates 24 on each side of the arm 19 form a guide for the cam. The chase is returned to the firebox by the action of a spring 25. Before coming opposite the feed table 3, the chase passes over an oiling-pad which greases the die and enables it to pick up the gold leaf. The oiling-pad 26 is carried by an arm 27 hinged to a bracket 28 which is fixed to the carrier 15. Attached to the arm 27 is a plate 29, the upper end of which is reduced to pass through a hole in the bracket 28, and is fitted with a nut or or the like 30 to act as a stop. A lug 31 is adjustably fixed in a slot in the plate 29, and is engaged by a hinged cam-piece 32 on the chase whereby the pad is raised into contact with the chase. The feed-table 3, carrying a pile of sheets of gold or other leaf, consists of a framing 3<a>, the floor of which is formed by two wedge-shaped blocks 35, 37. As the sheets are removed, the pile is raised by turning a screw 36. The table is supported by means of a squared socket on its underside which engages a squared part of a rod 38, Fig 3. The rod 38 has a socket at one end which can slide on a rod 41 on which it is adjusted by means of a spring 43 and nut 42. The table is adjusted on the rod 38 by means of a set-screw 40, Fig. 1, and the rod 41 is carried by a bracket 41<a> which is bolted to the frame 7 of the press. A vertical slot in the bracket allows the rod 41 to be adjusted vertically. The table 3 normally rests on a stop 45 carried on the end of an arm 46, and is raised by hand into contact with the chase. The platen 4 turns upon a pivot 47, and may be raised by toggle-levers 48, 49 actuated by a hand-wheel 50. When the togglelevers are in line, a stud 51 on the wheel comes against a stop 52. The work is held on the platen by a pair of frisket fingers 55 or the like. These are secured by thumb-screws 57 to a base strip 56 having an extension 58. As the platen rises, the extension 58 comes in contact with a projection on the frame, and presses the fingers down on the work. In the form in which the chase is swung down on to the feed table, the chase slides on two horizontal rods on which it is supported by means of split lugs of which there may be two on one side of the chase and one on the other. At a point on one of the rods, opposite the table, the diameter of the rod is reduced so that, when the split lug reaches this point, it slips from the rod and the chase swings down on the table, the other rod acting as a pivot. In order to remove the chase from the carrier, it is moved further along the rods until the two split lugs coincide with reduced parts of the rod on which they slide.