o the sight feed and to the delivery points. of the strap. At its upper end each strap is held ver- first to force oil to the sight feed and then to deliver The worm A drives the gear B, and on the gear shaft tical by means of a shank projecting through an open- this oil under pressure to the… … certain amount of play between
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![An illustration from The Telegrapher [microform] (1864)](https://img.insideoutlibrary.com/img/200/ia-telegrapher04nati-261-113.webp)
