. Railway mechanical engineer . vided with an 8-in. hole and is designed to stand theeffect of full force of the press. The intemiediate base,which is 45 in. from the face of the ram, is held in positionby screwed collars through the lugs cast on the base andbearing down against the collars on the strain rods. Theintermediate base is also of cast steel and is provided witha U-shaped opening 8 in. wide, through which the drivingbrasses are intended to fall as they are pressed from theboxes. The press is furnished complete with pump attached,ready to operate by motor drive as shown, or it may be
. Railway mechanical engineer . vided with an 8-in. hole and is designed to stand theeffect of full force of the press. The intemiediate base,which is 45 in. from the face of the ram, is held in positionby screwed collars through the lugs cast on the base andbearing down against the collars on the strain rods. Theintermediate base is also of cast steel and is provided witha U-shaped opening 8 in. wide, through which the drivingbrasses are intended to fall as they are pressed from theboxes. The press is furnished complete with pump attached,ready to operate by motor drive as shown, or it may beprovided with a belt drive. It is equipped with automaticknock-out valves for maximum pressure, also with springrelief valves. The discharge from the main press cylinder,as the ram is raised, is forced into the surge tank at thetop, and any surplus liquid which flows into the surge tankoverflows to the pump reservoir. A part of the stroke of the ram is made without anypressure registering on the gage; this is taken care of by a. 200-Ton Inverted Forcing Press With Two Bases June, 1919 RAILWAY MECHANICAL ENGINEER 377 rack and pinion, so that the ram can be brought down tothe work by hand. When this is done the cylinder isfilled with water frora the surge tank which is bolted toit; the water enters the cylinder from the tank through a check valve. When the ram stops the pump delivers thewater to the main press cylinder through another connectionand the check valve closes. The ram is counterweightedand will stay in any position where it may be placed. MILLING MACHINE WITH SPECIAL ATTACHMENT THE design of the milling machine shown inthe illustration is noteworthy in respect to sev-eral features, most conspicuous of which is thesquare overarm and the handy and easily attachablevertical spindle milling attachment, a combination pro-vided to meet the demand of those who, having a cer-tain amount of vertical or face milling work, are unable tokeep a vertical milling machine continuousl
Size: 1490px × 1678px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
