A practical work-shop companion for tin, sheet-iron, and copper-plate workers ... with numerous valuable receipts and manipulations for every-day use in the work-shop (1904)
Blinn, Leroy J. [from old catalog] · Philadelphia, H. C. Baird & co. · leaf 119
IRON AND COPPER-PLATE WORKER. the product by one-half tlie difference of the two ends;then subtract the quotient from the radius, and the remain-der is the versed sine. The diameter AB {Fig. 114) equals 12 inches; CD equals 5 inches ; the slant height DB equals 10 inches ; requiredthe radius : 10 X… … ^ig. 5- To draw a Figiwe having Straight Sides and SemicircularEnds.—Draw a line AB (Fig. 115) equal to the givenlength ; make AO and BO each equal to half the givenwidth. Through O and O draw indefinite lines perpen-dicular to AB ; with O and O as centres and OA as radiusdescribe arcs cutting the…
Metal-work
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