Scientific American, Volume 17, No. 26 December 28, 1867 / A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures.

by Various

I claim, 1st The use of white or blue clay, when used for the purpose above specified.

2d, The combination of flour, catechu and clay, when mixed and used for the purposes above set forth.

71,962.--FIRE LADDER.--Johan Blomgren, Galesburg, Ill.

I claim, 1st, The stuffing coil, O, inserted into the lower port of the tube H H', and forced up or down in the tube by the cog wheel, M, substantially as and for the purpose specified.

2d, The basket, R, in combination with a fire escape having the hinged side, T, and the adjusting rod, S, substantially as and for the purpose described.

3d, The construction of the stuffig coil, O, substantially as and for the purpose specified.

71,963.--SAFETY GUN LOCK.--Charles Bowlen, Milwaukee, Wis.

I claim tumbler, F, with its pin, G, in combination with dog, H, with its slot, I, substantially as and for the purpose described.

71,964.--VENTILATOR FOR BUILDINGS.--Thomas Boyd, Cambridgeport, Mass.

I claim, 1st, The combination of the chamber, A, with or without the lenses, B, cone, C, and rods, D, constructed and arranged to operate substantially as and for the purpose set forth.