Detail of the Aspirator and Its Connections to a Faucet, for Increasing the Speed of Filtration
The upper end of the large tube should be threaded inside to fit over the threads on the faucet, or an attachment soldered to it similar to those on the end of an ordinary garden hose. A rubber hose should be attached to the small tube and connected, as shown, to a piece of glass tubing that is sealed in the cork in the top of the large bottle. The funnel holding the filter paper is also sealed into the cork. Melted paraffin may be used in sealing the glass tube, funnel and cork in place, the object being to make them airtight. The filter paper should be folded so that it sticks tightly against the sides of the funnel when the liquid is poured in, thus preventing any air from entering the bottle between the paper and the funnel. Turn on the faucet, and it will be found that the time required to filter any liquid will be greatly reduced. Be careful, however, not to turn on too much water, as the suction may then be too strong and the filter paper become punctured.
A Key-Holder Hook
A good hook for hanging keys, toothbrushes and other small articles can be made from ordinary wire staples, as shown at A. One leg of the staple is cut away as shown at B and the other leg driven into the board as shown at C. These will answer the purpose as well as screwhooks.—Contributed by W. C. Heidt, Chicago.
A Hand Hoe
A hand hoe, especially adapted for weeding or cultivating small truck, particularly onions, can be made of a piece of hard wood, 7/8 by 1-3/4 in. by 4 ft. long, and a piece of old bucksaw blade. A blade, 18 in. long and 2 in. wide, bent into a loop is attached with bolts to the handle.—Contributed by Geo. H. Miller, Iowa City, Iowa.
Bucksaw Blade Attached to a Hardwood Handle