Mechanical Contracting & Plumbing January-December 1909 . Will beAnswered by Experts—Discussion is Also Invited on Any Mat-ter pertaining to the Tin Shop. SQUARE BAY WINDOW BASE. This method can be applied to anysize or shape providing same is similarin plan. In this ease we have the nor-mal profile in the elevation which isalso the true profile in section B;divide the normal profile in any num-ber of parts and draw same downthrough section B to mitre line fromthese points of intersection, draw par-allel lines through section A. Nextproject the points in normal profile to for section A; take t
Mechanical Contracting & Plumbing January-December 1909 . Will beAnswered by Experts—Discussion is Also Invited on Any Mat-ter pertaining to the Tin Shop. SQUARE BAY WINDOW BASE. This method can be applied to anysize or shape providing same is similarin plan. In this ease we have the nor-mal profile in the elevation which isalso the true profile in section B;divide the normal profile in any num-ber of parts and draw same downthrough section B to mitre line fromthese points of intersection, draw par-allel lines through section A. Nextproject the points in normal profile to for section A; take the stretchout ofprofile A and place same withparallel line under section A asshown, drop the points of intersectionin mitre line K in plan down until theyinteresect corresponding lines in stretch-out and this will give the pattern for sec-tion A. Do the same with stretchoutof normal profile by placing same oppo-site to section B, obtaining patternfor B. G. L. GRAY. parts as shown and represents one-halfof the base. The pattern is made as shown in Square Bay Window Base. 2, by using D as a centre and with aradii equal to DE describe an arc KE.
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