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 |
| 4068412 | Grinding machine Grinding machine for a workpiece having a reference surface that cannot be used for mounting the workpiece for grinding and, yet, must be located near the abrasive wheel to permit accurate grinding of surfaces relative to the reference surface; the machin... | 01/17/1978 |
| 4053287 | Brake shoe grinding jig A jig for use in grinding brake shoe linings of brake shoes having pivot means at one end which engage respective spaced pivot pins in the brake drum, the jig comprising a turntable, having central swivel means, mounting means on the turntable, means for ... | 10/11/1977 |
| 4052822 | Method and apparatus for abrasively cutting objects A unique method and apparatus for making a score cut on a metal object with a previously used abrasive cutting wheel, worn down from a new, larger diameter wheel to allow use of worn cutting wheels and to improve the ratio of cross-sectional area of metal... | 10/11/1977 |
| 4033076 | Cylindrical grinding machine with workpiece loader and unloader A cylindrical grinding machine comprising workpiece clamping means including a throwblock and a jaw member, a workpiece loader including workpiece engaging means, a workpiece unloader including workpiece engaging means, means for displacing the loader wor... | 07/05/1977 |
| 3977129 | Grinding machine A cylindrical grinding machine comprising means for supporting a workpiece for rotative displacement about the axis thereof, a grinding wheel assembly including at least one grinding wheel and means for rotatively displacing the grinding wheel about the a... | 08/31/1976 |
| 3975866 | Method and apparatus for machining housings for slant axis rotary mechanisms Method and apparatus for machining an end surface for a housing for a slant axis rotary mechanism having a slant angle of .crclbar. and a rotor to shaft to housing timing ratio of SR /SS SH. The method includes the steps o... | 08/24/1976 |
| 3972148 | Machine tool for finish-grinding the inner surfaces of annular workpieces An internal finish-grinding machine of the type comprising a frame carrying a rotatable grinding wheel and also supporting an axially movable table which itself carries a rotatable support for a workpiece has the table pivotally mounted on a single horizo... | 08/03/1976 |
| 3946525 | Automatic buffing machine The buffing machine of the present invention includes one or more buffing wheels to which workpieces are successively presented on a continuously traveling conveyor wherein the workpieces are rotatably mounted. The axis of workpiece rotation is adjustable... | 03/30/1976 |
