US Patent: 2,689,484
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| Speed change pulley bracket support
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Patentee:
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| Robert D. Phares (exact or similar names) - Phoenix, AZ |
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Patent Dates:
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| Applied: |
Jun. 17, 1952 |
| Granted: |
Sep. 21, 1954 |
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Patent Pictures:
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Jeff Joslin
Vintage Machinery entry for Savage Mfg. Co.
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Description: |
| "This invention pertains to speed change pulley bracket supports for drill presses having frames with vertical columns supporting a drill head frame..." It provides a continuously variable speed mechanism using a pair of belts and a dual Reeves-style pulley. An example has been seen bearing a label, "Gilbert Engineering Co. / Phoenix, Arizona / Vari-Slo / Pat. 2,689,484 / Speed-Juster". Searching on "Speed-Juster" reveals that this design was also made by Savage Mfg. Co. of Phoenix, around 1951.An article in the 1952-12-27 Arizona Republic mentions that Robert Phares was "general manager and chief designer" of Savage Mfg. Co., which had just introduced a new low-speed drill press attachment that cost less than $30. The idea came from Hal Savage of Arizona Welding Equipment Co., who originally intended to produce a new drill press with variable-speed drive. They also made a version for wood lathes and they developed a simplified unit for Sears, which was sold as the "Vari-Slo" variable-speed attachment for their 15" drill presses. Savage Mfg. Co. got into financial difficulty and was acquired by their landlord, Gilbert Engineering Co., who continued production until at least the late 1960s. |
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