US Patent: 1,172,341 - Speed Changing Mechanism


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US Patent: 1,172,341

Speed Changing Mechanism

Patentee:

Edward P. Bullard, Jr. (exact or similar names) - Bridgeport, Fairfield County, CT

USPTO Classifications:

74/342, 74/473.24, 74/483R

Tool Categories:

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

metalworking machines : drilling and boring : vertical boring mills

Assignees:

Bullard Machine Tool Co. - Bridgeport, Fairfield County, CT

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Dec. 11, 1911
Granted:	Feb. 22, 1916

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Bullard Machine Tool Co.

Description:

Claim:

In a speed changing device the combination with two trains of changeable speed gears connected together, the second one of which is adapted to produce a number of speeds for each speed of the first train, a pair of slide rods for operating each train to produce different speeds and a locking lever adapted to be engaged with and disengaged from said rods to hold the gears in mesh.