Abstract: An adjustable hydraulic speed drive for controllably maintaining output torque and variable output speed is disclosed. The drive utilizes a rotating group of pistons in radially arranged bores in a portion of an input shaft. A supply of controlled fluid is provided to the bores by way of passageways in an output shaft communicating with said bores. A portion of the output shaft supports a cam ring in spaced relation to said bores and roller ends on said pistons engage said cam ring by centrifugal force upon rotation of the input shaft so that the pistons move responsive to the cam ring contours, said impart movement to the cam ring and output shaft by controlling the pressure level and/or flow rate of the fluid exiting from said bores.

Abstract: Apparatus for sensing and measuring the torque output of a rotary device such as a gear reduction box by inserting an especially machined or configured adaptor between the shaft bearing and the bearing mounting housing. This adaptor transducer will have strain gages mounted on it in spaced relationship so that the tangential force from the gears reacting on a shaft will produce a deflection in the adaptor transducer which will be detected by the strain gages. The strain gage signal then will be sensed, amplified and can be recorded on an analog read out type meter or monitored continuously on a pen-type recorder or other conventional instruments. The strain gages can be calibrated so the output of the recorder will convert the signal into a direct reading of the torque output transmitted through the gear reduction box.

Abstract: Apparatus for sensing and measuring the torque output of a rotary device such as a gear reduction box by inserting an especially machined or configured ring between the shaft bearing and the bearing mounting housing. This ring will have strain gages mounted on it in spaced locations so that axial movement of the shaft will produce a deflection in the ring which will be detected by the strain gages. The strain gage signal then will be sensed, amplified and can be recorded on an analog read out type meter or monitored continuously on a pen-type recorder or other conventional instruments. The strain gage device can be calibrated so the output of the record will convert the signal so that a direct reading of the torque output of the shaft can be made.