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A shaving horse (shave horse, or shaving bench〔Fabricating and Installing Side-Lap Roof Shingles in Eastern Pennsylvania by James Houston and John N. Fugelso ()〕) is a combination of vice and workbench, used for green woodworking. A foot-actuated clamp holds the work piece securely against pulling forces, especially as when shaped with a drawknife or spokeshave. As the name "horse" suggests, the worker sits astride the shaving horse. The clamp is operated by the operator pressing their feet onto a treadle bar below. Typical usage of the shaving horse is to create a round profile along a square piece, such as for a chair leg or to prepare a workpiece for the pole lathe. They are used in crafts such as coopering and bowyery. ==Construction== The typical clamp is a vertical bar or bars, hinged on a pivot attached to or passing through the bench/seat top. The top of this bar is enlarged into the "horse" -, "dog" - or "dumb" head, the part that holds the wood. Some clamps are worked via string or rope, rather than mechanical leverage. For extra precision and better clamping force, the clamp pivot point may be raised above the bench level on a sub-bench, giving more leverage. These so-called "Black Forest" or German and Swiss shave horses (as pictured) give a longer lever-ratio, creating greater mechanical advantage and thus greater force to trap the wood very securely. Shave-horses are commonly workshop-made by their user and entirely wooden, though modern screws, washers, metal sleeves and threaded bolts, with locking nuts are a very welcome and practical innovation, allowing re-tightening or capability to be knocked-down as necessary. For the itinerant bodgers, simplicity and lightness of their tools was important- thus the bodger often created their shave horse from found logs in their woodland plot. They provide a rapid clamp and sturdy clamp, which allows the operator to use their legs and upper body weight as additional "power" for work. It is considered by some to result in less fatigue, than generated by constantly standing. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Shaving horse」の詳細全文を読む スポンサード リンク
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