Early Chain Saw (Feb, 1938)
Power-Driven Timber Saw Has Stationary Blade
A POWER-DRIVEN saw used to cut timber during the construction of a huge wood crib at Grand Coulee Dam in Oregon features a blade that actually stands still while the cutting process takes place. The “secret” of the novel saw is that the teeth run on an endless chain around the blade, which merely serves as a guide for the teeth as they cut into the timber. A three-horsepower compressed air motor drives the chain. The saw is so designed that it can also be used under water without impairing its efficiency.