Horizontal Pivot Pantograph for Motion Reduction between Piston and Steam Engine Indicator

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“It is placed horizontally with the pivot, B, resting on a support opposite the crosshead when in mid—position. If the pivot B is adjusted to the proper height and at the right distance from the cross head, the cord from the indicator may be attached to the pin E without any pulleys."—Derr, 1911

Source

Derr, Louis Cyclopedia of Engineering (Chicago, IL: American Technical Society, 1911)

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