Mechanics for young America; how to build boats, water motors, wind mills, searchlight, electric burglar alarm, ice boat ..etc.; the directions are plain and completeReprinted from Popular mechanics . theruling pen to outline the letters gives sharpstraight edges which would be impossiblewith a brush in the hands of an inexperi-enced person.—Contributed by S. L. Hatfield,Wagoner, Ind. Ter. ?» •» FOCUSING SCREENS. To make a focusing screen, superior tothe finest that can be bought, fix a dryplate, then flood it with a 10 per cent solu-tion of chlorid of barium, and follow thiswith a 10 per cent
Mechanics for young America; how to build boats, water motors, wind mills, searchlight, electric burglar alarm, ice boat ..etc.; the directions are plain and completeReprinted from Popular mechanics . theruling pen to outline the letters gives sharpstraight edges which would be impossiblewith a brush in the hands of an inexperi-enced person.—Contributed by S. L. Hatfield,Wagoner, Ind. Ter. ?» •» FOCUSING SCREENS. To make a focusing screen, superior tothe finest that can be bought, fix a dryplate, then flood it with a 10 per cent solu-tion of chlorid of barium, and follow thiswith a 10 per cent solution of chlorid ofmagnesium. Allow to dry, and a perfectfocusing screen results, says Photo-Beacon. A boy who possesses natural mechanicaland inventive genius can build himself asteam engine even though he does not haveaccess to a small machine shop and thoughhis materials be crude. Howard Burr ofLeon, 0., built for himself a one-half horse-power engine which will operate a sewingmachine. He cut his own patterns, thenmolded the various parts in sand. The cast-ings were made of babbitt metal, which heheated in a ladle in a cook stove. The en-gine works perfectly. It is shown in the. Howard Burr and Hia Engine photograph together with its inventor. In response to our inquiry the young en-gine builder replies as follows: I haveyour letter asking for a description of howI built my steam engine. The castings aremade of babbitt metal; such parts as theconnecting rod, eccentric rod, and slidebars were sawed out of iron and brass. Thecylinder is brass. The piston was made bycasting solid and then turning a deep groovein it and then made steam tight by windingwith packing. The valve seat and valvewas made true and steam tight by grindingwith emery and oil. I built the en-gine with tools that may be found aboutany house, and worked at it mostly at engine the cylinder is 2 x 2 in.; thesmaller one has a cylinder 1*4 x 1% and keeping at it is more thananythi
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Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
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Keywords: ., bookcentury1900, bookdecade1900, bookp, booksubjectindustrialarts
