| 摘要 |
In a motion transformer for converting oscillatory to rotary motion, comprising (a) an enclosure including a base plate, a cover plate, and side members, all of which are substantially rigid, (b) a ratchet wheel within the enclosure mounted for both oscillatory and rotary motion, (c) a pair of stops limiting the amplitude of such oscillatory motion, (d) a ratchet pawl coacting with the ratchet wheel and a restraining member preventing retorgrade rotation thereof to convert oscillatory motion thereof to unidirectional rotary motion, and (e) a liquid filling the space in said enclosure, an expansion chamber is provided adjacent the enclosure in communication therewith through a capillary channel and is partially gas-filled to accommodate thermal expansion and contraction of the liquid. Such apparatus is made by immersing it in the liquid, subjecting the liquid to high vacuum to withdraw air, then restoring atmospheric pressure to drive the liquid into the apparatus, then heating the apparatus to above its maximum expected operating temperature followed by cooling to allow the liquid to contract and cause some air to enter the expansion chamber, and then hermetically sealing the apparatus. |
