Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 5146960 | Delimbing apparatus A tree delimbing structure is arranged to include a plurality of biased gates arranged in a first position in a parallel relationship relative to one another to a second position to receive a tree therethrough. The gates are hingedly mounted at opposed en... | 09/15/1992 |
| 4250935 | Method and an apparatus for cross-cutting trees A method for cross-cutting trees, where a trunk to be cross-cut is advanced relative to a lopping means for cutting off branches on the trunk. A signal representing the lopping force required is generated and is combined with a signal representing advance... | 02/17/1981 |
| 4111245 | Tree delimber An apparatus for delimbing felled trees is described, wherein the trees are pulled individually or, in some cases, in bundles through the delimber. The delimber is provided with a base; a lower impact shear blade which is a notched steel plate supported u... | 09/05/1978 |
| 4078592 | Log feed mechanism for sawmills A log feed mechanism that will longitudinally move successive logs toward the cutting and/or chipping mechanisms of a sawmill while holding the successive logs along a prescribed path of movement such that the successive logs may be efficiently sawed into... | 03/14/1978 |
