The Boy Mechanic: Volume 1 eBook

This eBook from the Gutenberg Project consists of approximately 823 pages of information about The Boy Mechanic.

The Boy Mechanic: Volume 1 eBook

This eBook from the Gutenberg Project consists of approximately 823 pages of information about The Boy Mechanic.

A small wooden or fiber end, G, is fitted with two binding posts which are connected to the ends of the wire left projecting from the magnet winding.  The binding posts are attached to the line and a trial given.  The proper distance must be found between the diaphragm and the head of the nail.  This can be accomplished by moving

[Illustration:  Receiver]

the nail and magnet in the hole of the spool.  When the distance to produce the right sound is found, the nail and magnet can be made fast by filling the open space with melted sealing wax.  The end G is now fastened to the end of the spool, and the receiver is ready for use.

** How to Clean Jewelry [353]

To cleanse articles of silver, gold, bronze and brass use a saturated solution of cyanide of potassium.  To clean small articles, dip each one into the solution and rinse immediately in hot water; then dry and polish with a linen cloth.  Larger articles are cleaned by rubbing the surface with a small tuft of cotton saturated in the solution.  As cyanide of potassium is a deadly poison, care must be taken not to have it touch any sore spot on the flesh.

** Ornamental Iron Flower Stand [353]

The illustration shows an ornamental iron stand constructed to hold a glass or china vase.  This stand can be made by first drawing an outline of the vase on a heavy piece of paper.  The vase is to have three supports.  The shape of the scrolls forming each support should be drawn on the paper

[Illustration:  The Stand with Vase]

around the shape of the vase.  A single line will be sufficient, but care must be taken to get the shapes of the scrolls true.  Take a piece of string or, better still, a piece of small wire, and pass it around the scroll shape on the paper.  This will give the exact length of the iron required to make the scroll.  As sheet metal is used for making the scrolls, it can be cut in the right lengths with a pair of tinner’s shears.  Take a pair of round-nose pliers, begin with the smallest scrolls, and bend each strip in shape, using the flat-nose pliers when necessary to keep the iron straight, placing it on the sketch from time to time to see that the scrolls are kept to the shape required.  The scrolls are riveted and bolted together.  The supports are fastened together with rings of strip iron 3/8 in. wide, to which the supports are fastened with rivets.  The metal can be covered with any desired color of enamel paint.

** How to Make a Coin Purse [354]

The dimensions for a leather coin purse are as follows:  from A to B, as shown in the sketch, 6-3/8 in.; from C to D, 4-1/4 in.; from E to F, 3-1/2 in. and

[Illustration:  Leather Design for a Purse]

from G to H, 3-1/4 in.  Russian calf modeling leather is the material used.  A shade of brown is best as it does not soil easily, and does not require coloring.

Copyrights
Project Gutenberg
The Boy Mechanic: Volume 1 from Project Gutenberg. Public domain.