may be most con- head of the boiler, and as near the bottom as possible, venient, one of these inter- is screwed a pivotal universal joint connection for the posed signal stands, as sweeper rod. The construction of the connection is shown in the illustration, clearly shown in the sectional view.… … is released at any oneof the signal stands, it permits The object of this invention, which has been the levers to change and the wire to slack from such LEVI’S BOILER SWEEPER, patented by Mr. Frank W. Bradley, whose address is point sufficient to drop the weight at the signal post. As the weight…
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