g the patentee as above. •••.«. cases where several flues pass up the wall side by side, a pulley. The motion of this sliding frame is at a fixed speed, BARKER'S HEATING AND VENTILATING APPARATUS. metal partition is used to separate each at the point of loca- whether for wide or narrow timber, a… … ded with three distinct sizes of screw, each of which parts heating and ventilating arrangements in the public schools current volume) to state that he will be happy to give in- is made tapering in form. The larger of the three, A, is and court rooms of this city have, to a considerable degree,…
Patents · Iron · Going · Boiler · Improved · Letters patent · Vapor · Specific mechanism · Science record · Scientific American · Solar heat · Steam boiler · Sewing machine · Wrought iron · Cast Iron · Nervous impulse
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