Pneumatic Belt Shifter

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“A pneumatic shifter moves the belt rapidly in either direction, holds it where it is put, and stays in any wished—for intermediate position.” —Grimshaw, 1902


Grimshaw, Robert Modern Workshop Hints (Philadelphia, PA: Sampson Low Marston & Company LTD, 1902)


TIFF (full resolution)

2400×1060, 371.4 KiB

Large GIF

1024×452, 72.4 KiB

Medium GIF

640×282, 36.3 KiB

Small GIF

320×141, 12.4 KiB