The Boy Mechanic: Volume 1

700 Things For Boys To Do

Published: 1916
Language: English
Wordcount: 236,029 / 661 pg
Flesch-Kincaid Reading Ease: 87.4
LoC Category: PZ
Downloads: 2,123
Added to site: 2004.07.03
mnybks.net#: 8685
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Illustrations not included - for HTML with images please visit http://www.gutenberg.org/etext/12655.

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ecessary to hold the structure up. It is doubtful whether such an arch could be built of brick or stone without scaffolding, but with the snow blocks it is a simple matter.


** Secret Door Lock [6]

The sketch shows the construction of a lock I have on a door which is quite a mystery to those who do not know how it operates. It also keeps them out. The parts of the lock on the inside of the door are shown in Fig. 1. These parts can be covered so that no one can see them.

[Illustration: Fig. 1, Fig. 2, Fig. 3; The Lock Parts]

The ordinary latch and catch A are attached to the door in the usual manner. The latch is lifted with a stick of wood B, which is about 1 ft. long and 1 in. wide, and pivoted about two-thirds of the way from the top as shown. The latch A is connected to the stick B with a strong cord run through a staple to secure a right-angle pull between the pieces. A nail, C, keeps the stick B from falling over to the left. The piece of wood, D, is 6 or 8 in. long and at

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Average Rating of 4 from 1 reviews: ****
2006.12.05
Arthur
****.

Historically fascinating, but of limited use without the lissustrations. Some nifty projects you could build today, some you couldnt get the materials for any more, some totally obsolete (homemade stove polish, anyone?)


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