GB809179A - A machine for pressing, smoothing or embossing leather - Google Patents

Abstract

809,179. Leather-rolling machines. MASCHINENFABRIK MOENUS A.G. Feb. 18, 1957 [Feb. 18, 1956; May 19, 1956 ; Dec. 20, 1956], No. 5428/57. Class 76. [Also in Groups XVI and XXXII] In a machine for smoothing leather, wherein a carriage bearing a revoluble and upwardlypressed pressure roller is moved to and fro on rails to press the leather against a pressure plate, the carriage is self-propelled by a power unit thereon driving its running wheels. Uprights 2, 3 of the machine frame carry two rails 4, 5 on each of which run two wheels 24 of the carriage 6. The wheels 24 are keyed to axles 7, 8 which are journalled in bearings in intermediate and end walls 17, 18 of the carriage. Also keyed to the axle 8 are pinions 27, Fig. 3, which engage racks 25 fitted to the rails 4, 5, and a worm wheel 13. A worm 14 engages the worm wheel 13 and is driven by an electric motor 9 mounted on the carriage, thus causing the axle 8, wheels 24 and pinions 27 to rotate and the carriage to move along the rails 4, 5. Abutments 10, 11 at each end of the rails operate reversing switches so that the carriage moves to and fro between them. The pressure roller 21 is spring mounted in the top of the carriage 6 and is driven, e.g. by a bevel gear arrangement 22, from the axle 7, in the opposite direction to the wheels 24. The leather is held against the underside of the pressure plate 19<SP>1</SP> of a heated pressure chest 19, which is covered by a sheet of felt or leather, by a table not shown in the drawing, and is embossed by the roller 21 which presses up against it. Ramps 30 are disposed at each end of the pressure chest 19 to avoid shock when the roller 21 runs on to the leather on the pressure plate 19<SP>1</SP>. Each ramp 30 has a shoe 34, Fig. 5, attached to two plates 33 which depend from the eccentric end portions 32 of a shaft 31 journalled in slots 30<SP>1</SP> in the ramp walls. The shaft 31 has a flat extension 35 at one end to which a handle 36 having a forked part 37 is pivoted by means of a pin 41 so that by swing- ing the handle on its pivot away from the machine the forked part 37 presses on the adjacent plate 33 and both plates are drawn toward each other and clamped against the walls of the ramp 30 when the handle 36 is at a right angle thereto. To accommodate varying thicknesses of pressure plate the shoe 34 is raised or lowered by the eccentrics 32 when the handle 36 is turned and a wedge is slidable laterally, by means of a screw 38, between the shoe and the body of the ramp so that no gap is left therebetween. The shoe 34 is also adjustable laterally by moving the shaft 31 along the slots 30<SP>1</SP>. Dished springs threaded on bolts may be used to support the roller 21 (see Group XXXII), the lower springs being thinner than the upper ones so that the first pressure is gentle and yielding.