US Patent: 972,786
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| Antifriction alloy
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Patentee:
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| Joseph R. Stratton (exact or similar names) - Moncton, NB Canada |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Oct. 11, 1910 |
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Jeff Joslin
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Description: |
| "Heretofore anti-friction metals have been made principally of lead and antimony in the proportion of about 85 percent of lead to 15 percent of antimony, and in some cases where a rather more expensive composition would be acceptable, a definite amount of copper together with some tin have been included. I have discovered, however, that the addition of spelter in combination with various selections of the aforesaid metals in diverse proportions has produced an anti-friction metal exceedingly well adapted for its purpose, especially when used in railroad and other heavy service." Spelter is crude smelted zinc, often with some copper in it. The formal patent claims include 18 different compositions. The proposed practical embodiment is 8 oz copper, 1 lb 12 oz tin, 3 lb lead, 25 lb spelter, and 3 oz antimony.The September 1905 issue of Canadian Machinery and Mfg. News has this note: "A Moncton man named Joseph Stratton has invented a new babbitt metal which is attracting considerable attention and a large industry to manufacture the metal may be established at Moncton." From the 1906-03-14 Union Advocate: "My M. W. Carrier, Mechanical Engineer of Sussex, was in the city to-day for the purpose of giving a chemical test to Stratton's Excelsior Babbitt Metal. The test was satisfactory in every particular and amply demonstrated the splendid qualities which the metal possesses..."The above notes notwithstanding, we could not find any evidence of a Moncton-based manufacturer of bearing metal in this time period, nor any such business anywhere involving Messrs. Stratton and/or Borden. We also could not find any evidence of a Canadian equivalent to this US patent. |
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