1、 陕西理工学院 毕业设计英文资料翻译 2012 年 6 月 1 日 陕西理工学院外文翻译 第 1 页 共 9 页 陕西理工学院外文翻译 第 2 页 共 28 页 UNITED STATES PATENT OFFICE CHARLES H. LASKER, OF JOLIET, ILLINOIS OPERATING MEANS FOR A CRANK PRESS Application filed May 5, 1932. Serial No. 609,365 The subject of my invention is an operating means for a crank press,
2、 such as a brick press. It is the object of my invention to provide means whereby a press of the crank or rotary type, which has reciprocating parts driven by a rotating engine, is enabled to move at slow speed during the working cycle and at high speed during the opening and closing cycle when the
3、press may be run at slow speeds when working and thus give a pressure comparable to that of an hydraulic press and yet move with such speed during the non-working cycle as to give the high production required of modern machinery. An embodiment of my invention consists in a crank press, a motor for s
4、aid press , means for driving said press from said motor at high speed, means for driving said press from said motor at slow speed, and means for selecting one or other of said previously mentioned means in accordance with the position of the press. For a further exposition of my invention reference may be had to the annexed drawing and specification at the end where of my invention will be specifically pointed out and claimed. Figure 1 represent an elevation of my device with parts in cross section and in diagram. Figure 2 is a diagrammatic view of a portion of my device.
