US3711216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool bit adjusting device
Assignee: Standard Tool & Manufacturing Co
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Filing: 1971-06-25
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Granted: 1973-01-16
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Expires: 1991-06-25
Abstract
Abstract An adjustable wedge for a tool bit has a sloping face on a cylindrical body which is mounted in a cylindrical aperture where it can rotate. The opposite side of the body has a notch engaged by the head of a screw for adjusting the wedge axially within the aperture. A flat triangular bit is retained on a seat by a finger to have a corner tie exposed for cutting. By having the sloping face of the wedge engage the edge of the bit opposite to that of the tip being used, the bit can be adjusted outwardly by the movement of the wedge inwardly of the aperture by the screw. The bit usually is provided with sloping edges which converge to provide relief to the cutting tips and the sloping face of the wedge will cause the wedge to rotate so that the sloping face will be coplanar with the sloping bit edge.
Inventors
- 👤 E Zurcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:18
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/03; B23B29/034; B23B29/03403; B23B29/03417; B23B27/00; B23B27/14; B23B27/16; B23B27/1666; B23B27/1681; B23B2205/00; B23B2205/12; Y; Y10; Y10T; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8588; Y10T408/85892; Y10T408/85895
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
155 words
In a cutting tool, a tool body having a seat, a tool bit, a finger for retaining said bit on said seat, a wedge having a body of cylindrical shape with an axially disposed sloping face on one side and a notch in the side opposite thereto, said tool body having a cylindrical aperture for said wedge so disposed as to locate the slope of the wedge face parallel to a bit edge, and a screw threaded in an aperture in said tool body having a head located in said wedge notch for adjusting said wedge axially within said cylindrical aperture and said sloping face outwardly or inwardly in coplanar relation with one edge of the bit, whereby the coplanar relation between the sloping face of the wedge and the engaged sloping edge of the bit will result from the rotation of the cylindrical wedge within its cylindrical aperture as the wedge is axially adjusted.
Claim 2
Dependent Claim
155 words
In a cutting tool, a tool body having a seat, a tool bit, a finger for retaining said bit on said seat, a wedge having a body of cylindrical shape with an axially disposed sloping face on one side and a notch in the side opposite thereto, said tool body having a cylindrical aperture for said wedge so disposed as to locate the slope of the wedge face parallel to a bit edge, and a screw threaded in an aperture in said tool body having a head located in said wedge notch for adjusting said wedge axially within said cylindrical aperture and said sloping face outwardly or inwardly in coplanar relation with one edge of the bit, whereby the coplanar relation between the sloping face of the wedge and the engaged sloping edge of the bit will result from the rotation of the cylindrical wedge within its cylindrical aperture as the wedge is axially adjusted.
Claim 3
Dependent Claim
43 words
In a cutting tool as recited in claim 1, wherein said bit is triangular in shape providing three cutting tips at the corners with the edge opposite to the tip which is employed for cutting engaged by the sloping face of the wedge.
Claim 4
Dependent Claim
29 words
In a cutting tool as recited in claim 2, wherein the edges of the bit slope in converging relationship from the top to provide relief to the cutting tips.
Claim 5
Dependent Claim
38 words
In a cutting tool as recited in claim 1, wherein a plane through the central axes of the wedge and adjusting screw is normal to the edge of the bit engaged by the sloping face of the wedge.
Claim 6
Dependent Claim
35 words
In a cutting tool as recited in claim 1, wherein the spaced central axes of the wedge and adjusting screw apertures are parallel and disposed at an angle to the sloping face of the wedge.
References Cited (Backward Citations)
US3189976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |