| 摘要 |
<p>424,833. Time switches; thermal switches. MACLAREN, R., The Craigs, Linlithgow, and MACLAREN & CO., Ltd., R., 110, Kilbirnie Street, Glasgow. July 1, 1933, No. 18692. [Class 38 (v)] A thermal-time switch adapted to keep a building at a desired temperature between predetermined times comprises a switch E operated by a slidable knob F, the whole switch being mounted on a slide B movable by an expansible rod and the knob F engaging a recess J in a disc G that is driven by clockwork or a synchronous motor M. The switch E is of the kind shown in Specification 400,287, and is operated by the knob F moving into or out of the recess J.</p> |
