US Patent: 3,017,643 - Adjustable Tap Stop Means for Limiting Depth of Threading


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US Patent: 3,017,643

Adjustable Tap Stop Means for Limiting Depth of Threading

Patentee:

John W. Lehde, Jr. (exact or similar names) - Chicago, Cook County, IL

USPTO Classifications:

408/202, 408/215, 411/190, 411/948, 470/103

Tool Categories:

metalworking tools : tap and die holders

Assignees:

Scully-Jones & Co. - Chicago, Cook County, IL

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Mar. 09, 1959
Granted:	Jan. 23, 1962

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Scully-Jones & Co.

Description:

Claim:

Tap stop means for adjustably limiting the effective length of a tap having a flute extending longitudinally thereof, comprising a nut member threadedly engageable on said tap for adjustable positioning longitudinally thereof and having a longitudinally extending recess projecting radially outwardly from its central opening, said recess being disposable in opposed relation to said flute by rotation of the nut member, a locking member slidable longitudinally of the tap having a portion engaged with the flute and engageable with the nut member recess to prevent rotation of the nut member, and means for detachably connecting the locking member and nut member said connecting means adapted to hold the locking member alternatively in said nut-engaging position and in another nut-engaging position allowing relative rotation of the nut member.