633. Carpet Stretcher and Fastener.—Unite in one device a stretcher and fastener, thus doing away with the mischievous tack and the damage of piercing the carpet.
634. Step-Ladder Chair.—A chair so contrived that it may be thrown into a short step-ladder. A greatly needed device for the house.
635. A Window Fly-Gate.—Apply the principle of the fly-trap to the window screen. In this way the flies in the house may pass out, but those without will not come in.
636. Double Window Shade.—It is often desirable to shade the lower half of a window for the sake of privacy, while the upper half is left open to let in light, but the present window shade covers the wrong half of the window. Construct a shade which will be fastened to the bottom and work up to meet the other, or else a single shade which works exclusively from the bottom.
637. Folding Baby Carriage.—One which will occupy no more room than an ordinary chair. Perhaps your ingenuity could make an article which would be a chair and a baby carriage combined.
638. A Scrubbing Machine.—The handle just above the brush passes through a cylinder holding two or three quarts of water, the bottom of the cylinder being pierced with holes so that the brush is supplied with water.
639. Catch-All Carpet-Sweeper.—A sweeper with an appliance for running into the corners of rooms would supersede the sweepers now in use.
Section 18. Money in the Saving of Life and Property.
640. Safety Shafts.—A device for separating the shafts from the body of the carriage in the case of a runaway, and thus insure the safety of the occupants.
641. Pocketbook Guard.—Nearly all ladies carry the pocketbook in the hand. A device should be invented for fastening it securely to the hand so that it could not be snatched by a thief.