Often in experimental work a long, narrow, parallel screw is desired for regulating, or moving, some part of the apparatus in a straight line. A simple way of making such a screw is to tin thoroughly a small straight rod of the required length and diameter. After wiping off all the surplus solder while it is yet hot, wrap it with a sufficient length of bright copper wire and fasten the ends. This wire is then securely soldered in place by running the solder on while holding the screw over a blue gas flame. To make the solder run freely, brush frequently during the heating with a small mucilage brush dipped into the soldering acid. An even pitch can be secured by winding on two wires side by side at the same time, the second one being unwound before soldering.
Self-Setting Rat Trap
The Paper Stretched over the Barrel Top was Cut after Feeding the Rats on It for Some Time
A suburbanite successfully trapped a bunch of rats by stretching a piece of stout elastic paper on the top of an open barrel. Spreading food on this paper he allowed it to remain until the suspicions of the rats were allayed, then he cut two right-angled slashes in the paper with a razor. Next morning he found seven of the pests in the barrel.
Smoker’s Cabinet or Cellarette
The Smoker’s Cabinet Makes an Attractive Addition to the Furniture of a Den, and should be Made Up and Finished to Match Other Pieces of the Room
This design, when completed, takes up a wall space 20 in. wide by 31 in. high, and extends out 14 in. The material necessary for it is as follows:
| 2 | sides, ⁷⁄₈ by 14 by 31 in. |
| 1 | back, ³⁄₄ by 14 by 28¹⁄₈ in. |
| 1 | bottom, ⁷⁄₈ by 14 by 20 in. |
| 1 | top, ⁷⁄₈ by 10¹⁄₄ by 18³⁄₄ in. |
| 1 | bottom shelf, ⁷⁄₈ by 10¹⁄₄ by 14 in. |
| Door: | |
| 2 | stiles, ³⁄₄ by 2 by 14¹⁄₂ in. |
| 2 | rails, ³⁄₄ by 2 by 10 in. (not including tenons, if such are desired). |
| 1 | panel, ³⁄₈ by 10³⁄₄ by 11¹⁄₄ in. |
| Upper drawer: | |
| 1 | front, ³⁄₄ by 4 by 14 in. |
| 1 | back, ³⁄₈ by 3¹⁄₄ by 13¹⁄₂ in. |
| 2 | sides, ¹⁄₂ by 4 by 9⁷⁄₈ in. |
| 1 | bottom, ³⁄₈ by 9⁵⁄₈ by 13¹⁄₂ in. |
| Lower drawer: | |
| 1 | front, ³⁄₄ by 5 by 14 in. |
| 1 | back, ³⁄₈ by 4¹⁄₄ by 13¹⁄₂ in. |
| 2 | sides, ¹⁄₂ by 5 by 12⁷⁄₈ in. |
| 1 | bottom, ³⁄₈ by 12⁵⁄₈ by 13¹⁄₂ in. |
| 1 | piece for keys, ³⁄₄ by 2¹⁄₄ by 6¹⁄₄ in. |
| 1 | pair hinges. |
| 2 | drawer pulls. |
| Screws and nails. | |