US Patent: 828,875 - Counterbalancing Device


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US Patent: 828,875

Counterbalancing Device

Patentee:

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

USPTO Classifications:

74/422

Tool Categories:

metalworking machines : drilling and boring : vertical boring mills

metalworking machines : metalworking machine mechanisms

Assignees:

Bullard Machine Tool Co. - Bridgeport, CT

Manufacturer:

Bullard Machine Tool Co. - Bridgeport, CT

Witnesses:

Unknown

Patent Dates:
Applied:	Nov. 28, 1905
Granted:	Aug. 21, 1906

Patent Pictures:

USPTO (New site tip)
Google Patents
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Vintage Machinery entry for Bullard Machine Tool Co.

Description:

Claim:

A counterbalance comprising a rack, a pair of adjoining but independent pinions connected with the rack, a weight and connections therefrom to one of said pinions, and a second and distinct connection with the other pinion for adjusting the rack as desired.