Page:Popular Science Monthly Volume 90.djvu/627

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Popular Science Monthly

��611

��is greatly reduced. These jacks are easily made and they are inexpensive to build. The size of the jack given is for a 30-in. wheel. For larger wheels the height should be 2 in. more than the height from the hub to the floor. — A. R. Colburn.

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��A Lubricator for Automobile Steering Pivots

THE accompanying sketch shows a simple self-feeding grease-cup which any mechanic can assemble without diffi- culty. This cup may be applied without any alterations to the automobile axle. It consists of a brass tube threaded at both ends and of the proper size for the pipe thread in the tapped hole of the axle. One end screws into the axle, and on the other end a pipe cap with a hole in it for the plunger rod is fitted. The plunger and rod with a light compression-spring are assembled as shown. This spring should not be too strong lest the grease be forced out of the bearing and wasted.

The proper size spring will make this lubricator far more economical than the compression type of grease-cup. The height of the plunger above the cap indi- cates the amount of grease which is in the tube. — W. Burr Bennett.

���A grease-cup made of a pipe and pipe-cap

��A Soda Mixture for Quickly Removing Varnish

A GOOD varnish remover can be made as follows: To three quarts of luke- I warm water, add one quart of good caustic 1 soda. When thoroughly dissolved, apply

with a coarse sponge. This is much better

than using oil because varnish should not be , applied on an oily surface. If oil is used, it

should be thoroughly rubbed out with

soapy water and dried with turpentine

or alcohol. — L, E. Fetter.

��A Free End Hacksaw- Blade for Difficult Work

AVERY handy hacksaw useful in repair work is one having a free end. Such a saw can be made from a broken

���Broken hacksaw in a pistol- grip to make a free end saw

��blade clamped in a pistol-grip handle, as shown in the illustration. The clamp part consists of two L-shaped pieces held together with bolts. — John W. Shank.

��An Adjustable Stand Helper for the Blacksmith Shop

THE usual standard form of helpers with one leg seldom gives perfect satisfaction as it is so likely to topple over when the work is pulled or pushed over the anvil. The illustration shows a different type of a helper in which there are two standards, each with two feet, mak- ing it very substantial and firm. The

���A helper for the blacksmith shop that will not topple over with the work

material used consists entirely of ordinary stake iron with dimensions as shown.

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