US Patent: 2,716,350 - Slow speed converter motor drive


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US Patent: 2,716,350

Slow speed converter motor drive

Patentee:

Robert D. Phares (exact or similar names) - Phoenix, AZ

USPTO Classifications:

474/113, 474/171, 474/69, 474/88, 74/368, 74/421A, 74/421R

Tool Categories:

metalworking machines : metalworking machine mechanisms : metalworking machine gearing : metalworking speed changing mechanisms

Assignees:

Savage Mfg. Co. (Phoenix) - Phoenix, AZ

Manufacturer:

Gilbert Engineering Co. - Phoenix, AZ

Savage Mfg. Co. (Phoenix) - Phoenix, AZ

Witnesses:

Unknown

Patent Dates:
Applied:	Jun. 05, 1953
Granted:	Aug. 30, 1955

Patent Pictures:

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Vintage Machinery entry for Sears | Craftsman
Vintage Machinery entry for Savage Mfg. Co.

Description:

This is the patent for the Craftsman "Slo-Speed Converter" that was sold by Sears, Roebuck & Co. to convert a wood-cutting bandsaw to a metal-cutting saw. Every example we have seen is marked "PAT. PENDING". We have seen a couple of examples marked with the assignee's name, Savage Mfg. Co. That firm got into financial difficulty within a few years of this patent being issued, and this product's manufacture was taken over Savage Mfg.'s landlord, the Gilbert Engineering Co.

"This invention pertains to improvements in a slow speed converter motor drive applicable to electric drive motors for machine tools and other devices. ...easy to install...may be installed without any special machining or special brackets or fixtures or modification of the motor or machine...mounted on the drive shaft of the motor and supported by torque arms connectable to the mounting supports for the motor...readily shifted manually from a low speed drive to a high speed drive or vice versa with any special apparatus or skill..."