US Patent: 935,452
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| Ball-bearing
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Patentee:
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| Martin Backstrom (exact or similar names) - Chicago Heights, IL |
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Patent Dates:
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| Applied: |
Mar. 12, 1908 |
| Granted: |
Sep. 28, 1909 |
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Jeff Joslin
Vintage Machinery entry for Canedy-Otto Mfg. Co.
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Description: |
| "My invention concerns ball bearings in general, but pertains more particularly or especially to those for the shaft or spindle of an upright drill, its object and aim being the production of an anti-friction bearing which will be simple in construction, economical of manufacture, and the parts of which will neither be very small nor likely to be lost or misplaced when the bearing is taken apart. This improved and novel bearing has but a single spherical ball fitting in a socket or depression on the bottom end of the screw-threaded shaft or adjustable abutment by which the rotary spindle or shaft proper of the drill is fed up and down, the top end of the spindle having a recess or cavity containing a flat hardened disk on which the ball bears." |
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