The National Machinery Company

Dresser Industries, Inc.

Other

Robert E Loy

Robert E Wisebaker

Gregory A Smith

Dale E Foltz

Paul E Willis

Donald C Baldwin

William H Hite

William G Heckenhauer

Dale R Phillips

A flat die thread rolling machine provides a cam drive for the reciprocating slide which operates through a linkage to cause reciprocation of the slide. The cam provides a dwell which holds the reciprocating die stationary before the commencement of the working stroke to allow insertion of a workpiece into the dies while the dies are stationary relative to each other. The cam produces slow acceleration of the reciprocating die during the initial portion of the rolling operation to prevent workpiece slip page. The working stroke exceeds one-half of the machine cycle. Die match can be adjusted while the machine is running. Separate adjustment means are provided to adjust the tilt, parallelism, and pitch of the dies, with the pitch adjustment permitting pitch adjustment while the machine is running and without affecting tilt and parallelism adjustment. A hydraulic drive is provided to power the machine and provide high torque during jog operations and speed control during normal running operation.

Flat die thread roller

A flat die thread rolling machine provides a cam drive for the reciprocating slide which operates through a linkage to cause reciprocation of the slide. The cam provides a dwell which holds the reciprocating die stationary before the commencement of the working stroke to allow insertion of a workpiece into the dies while the dies are stationary relative to each other. The cam produces slow acceleration of the reciprocating die during the initial portion of the rolling operation to prevent workpiece slippage. The working stroke exceeds one-half of the machine cycle. Die match can be adjusted while the machine is running. Separate adjustment means are provided to adjust the tilt, parallelism, and pitch of the dies, with the pitch adjustment permitting pitch adjustment while the machine is running and without affecting tilt and parallelism adjustment. A hydraulic drive is provided to power the machine and provide high torque during jog operations and speed control during normal running operation.

Method for producing a thread rolling machine for use with different die

A closed die forging machine is disclosed in which the dies are clamped in their closed position by a hydraulically operated piston and cylinder means. A spacer is positioned between the clamping means and the movable die during the forging operation. Subsequent to the forging operation, the clamping means are released and the spacer is removed so that the movable die can be mechanically moved to its fully open position. By combining a removable spacer and hydraulic clamping means, it is possible to produce high die clamping forces without requiring substantial fluid flow to and from the clamping means. Therefore, pumping requirements are reduced and the tendency of the hydraulic fluid to become excessively hot is substantially reduced. Immediately after the completion of the forming operation within the closed die cavity, the hydraulic forces are released and a spring-powered system controlled by a cam-operated operator causes partial ejection of the finished workpiece from the stationary die. This minimizes the tendency of the fixed die to be excessively heated by the workpiece and improves die life. All of the operating functions, with the exception of the hydraulic clamping function, are mechanically produced and controlled. Consequently, high cyclic operating speeds can be achieved.

Closed die forging machine

A road planer machine having a housing containing a rotating planer drum and having access doors in the housing for maintenance and inspection of the cutting equipment which includes detectors for determining when the access doors are not in their normally closed positions and for disabling the propulsion system of the planer machine as well as the drum rotating system so that the machine can neither move nor the drum rotate if any of the access closure doors are not in their normally closed position.

Road planer control and safety system

Road planer

A stabilizing and isolation system for mounting an operator cab on a vehicle frame includes at least one resilient member disposed between the underside of the cab and the frame for resiliently supporting the cab on the frame. Motion limiting members are connected to the frame and the cab for restraining vertical displacement of the cab relative to the frame during a catastrophic event. A stabilizing linkage assembly is connected to the frame and the cab for restraining rolling and pitching motion of the cab relative to the frame, the assembly including resilient means to permit relative vertical motion between the cab and the frame.

Stabilizing and isolation system for a vehicle cab

The invention is a better road planing vehicle having an improved suspension system for supporting the rotary cutting unit under the vehicle chassis. The suspension includes a pair of lift and tilt cylinders connected in parallel spaced relation at one end to the vehicle frame and at the other end to the top of the cutter housing. Three parallel and triangularly arranged drawbars are connected at one end to the cutter housing and extend either fore or aft to connect at their other ends with the vehicle frame. A sideshift cylinder is connected between the frame and one of the drawbars. In the preferred embodiment the connections of the lift cylinders and the drawbars are ball joints.

Growing community of inventors

Bucyrus, OH, United States of America

Robert E Loy