A little history here. These platform plans are from a book of projects that a boy was expected to learn how to do -- build a canoe, an ice yacht, a jousting ring setup for ice skaters, household furniture, etc., as well as a nifty pea shooter with a gravity fed magazine for rapid fire. Life in 1914 was anything but boring. The platform plans are further proof of just how mainstream the speed bag was in the past.
From Google books:
From Google books:
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