Set 340

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1951. Approximately 5' wide:

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1952. Around 24" long:































1953. 57" long:



















1954. 6" long:
























1955. About 14" long:




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1956. These photos are both partial shots of something that is common in my area, not sure if they are found all over the country or not:



The cylinders are around 5" diameter:










Answers:



1951. A limber that was used with at least four horses to pull a cannon:

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1952. A large rounding plane that is called a witchet, it rounds the male end of a section of wooden water pipe (actually a bored-out tree trunk) so that it fits tightly into the female end of another section or a coupling, it was then coated with tar, and inserted. The tool could have also been used for the same purpose on wooden gas pipes.






















1953. A Cessna tow bar, it attaches to the front landing gear so the plane can be pulled to the hanger:

















1954. A shoe maker's shank laster, used to stretch the upper of a boot over the last into the hollow of the shank:


















1955. A hoof trimmer for a horse, patent number 511,885:


















1956. A portable traffic arrow:















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More discussion and comments on these photos can be found at the newsgroup rec.puzzles.