| 摘要 |
An accelerometer having an axially movable inertial body restrained by a coaxial coil spring rotated onto the external thread of an externally and internally threaded rotatable collar on a threaded post protruding from a frame with rotation of the coaxial and/or the spring selectively changing the neutral position of the body and/or the effective length of the spring for calibration. A flat flexure member connects the body to the rack of a pointer operating drive train to reflect the displacement of the body independently of limited rotation of the body. Oppositely spring biased ratched wheels are connected to a pair of maximum memory pointers rotatable by the operating pointer. Flexible reed pawls mounted on a forwardly biased slidable block with a V-notch are positioned for engagement with the ratchet wheels to maintain the memory pointers at their positions of maximum rotation. The pawl block is slidable rearwardly to free the ratchet wheels, and reset the memory pointers, by a push-button operated rod extending through an opening in an hermetically sealed container surrounding the frame, with sealing maintained by a flexible bellows which pivots with the rod. The body is locked for shipment by a hook that is pivoted to the frame and spring biased into the body with a push-button being provided through the container and sealed by a bellows, for pivoting and holding the hook against the biasing force and away from the body.
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