|
Description: |
| This patent date was seen on a pneumatically-powered circular saw from Ingersoll-Rand Co. This patent date was also seen on a circular saw from Skilsaw, Inc.; the other patent dates on the saw spanned 1914 to 1925, "other patents pending".An article in the May 1927 "Railway Engineering and Maintenance", page 218, describes Ingersoll-Rand Co.'s "New Air-Driven Portable Hand-Saw". The saw "consists essentially of an Ingersoll-Rand three-cylinder type air motor, a circular saw blade and a Crowe safety saw guard, together with suitable hand grips..." The saw was intended for cutting wood, soapstone, bakelite, wall-board, cable and copper. A variety of blades were available. The speed of cutting was claimed to be 20 times as fast as by hand-power. It was available in sizes to accommodate blade diameters of 6, 8 and 12 inches. |
|
