Also the mechanism for effecting the elevation and release of the weft,
substantially as described.
Also the plate, d, with its rectangular perforations and the gate or
slide for clamping a single piece of weft projecting through the plate,
substantially as shown and described.
Also a mechanism substantially as set forth for "knocking off" the weft
raising mechanism when a piece of weft is presented.
71,946.--BLACKBOARD FOR SCHOOLS.--William Arroquuier, Worcester, Mass.
I claim covering the plaster, B, with a coating, C, composed of the
ingredients named and applied in the manner above described whereby the
proper color and roughness are obtained as set forth.
71,947.--MODE OF OPERATING SWELL IN MELODEONS.--C.E. Bacon [assignor to
himself. George A Prince and Calvin F.S. Thomas], Buffalo, N.Y.
I claim the arrangement of the swell pedals side by side with the
bellows pedals and contiguous to and parallel therewith, for the purpose
and substantially as described.
71,948.--MATERIALS FOR TRANSMITTING HEAT.--William C. Baker, New York
city.
I claim the employment of salted water, glycerin, or their equivalents,
to prevent freezing in transmitting and diffusing heat through ordinary
pipes, tubes or radiators for the purpose of warming and ventilating
railroad cars, public vehicles and buildings, substantially as herein
described.
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