k This machine is the invention of Mr. William H. selves are its depositories. Instead, therefore, of pos- of the face plate. The meeting ends of the frames are sessing an econoinic value, it is, under the present ar- Howland, whose address is Room 25, No. 39 Broadway, bent to form a triangular… … and magnet to the binding post, 6, to the line instru- F, turning the sleeve in opposition to the tension of BRIGGS’ IMPROVED ROTARY VENTILATOR ments at the station, cf, back to the binding post, e, the spring, I, and bringing the bar, G, into contact through the coils of the other magnet to the…
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