US Patent: 181,650 - Double Taper Saw Blade


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US Patent: 181,650

Improvement in Saw Blades
Double Taper Saw Blade

Patentee:

Henry Disston (exact or similar names) - Philadelphia, PA

USPTO Classifications:

76/112, 83/835

Tool Categories:

woodworking tools : handsaws

Assignees:

None

Manufacturer:

Henry Disston & Sons - Philadelphia, PA

Witnesses:

Harry Smith

Harry Howson, Jr.

Patent Dates:
Applied:	Jan. 21, 1876
Granted:	Aug. 29, 1876

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Russ Allen.
"Vintage Machinery" entry for Henry Disston & Sons

Description:

Handsaw blade's double taper is accomplished by rolling rather than previous method of grinding which wasted metal and reduced toughness of the blade.