US3653107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lathe tool
Assignee: Individual
•
Filing: 1970-01-13
•
Granted: 1972-04-04
•
Expires: 1990-01-13
Abstract
Abstract A lathe tool in which the bit is of a shape providing easy manufacture and regrinding, and a long life. The outline of the lateral faces of the bit is an elongate isosceles trapezium and an elongate isosceles triangle having as its base the longer of the two parallel sides of the trapezium, the end faces of the bit forming the equal sides of the trapezium, two inclined upper faces of the bit forming the two equal sides of the triangle and a cutting edge being formed at the junction of each upper face and the adjacent end face.
Inventors
- 👤 Karl Hertel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:41
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/04; B23B27/14; B23B27/16; B23B27/1685; F; F16; F16B; F16B35/00; F16B35/005; Y; Y10; Y10T; Y10T407/00; Y10T407/22; Y10T407/2222; Y10T407/2238; Y10T407/224; Y10T407/2272; Y10T407/2282; Y10T407/2292; Y10T407/23; Y10T407/25
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
132 words
A lathe tool comprising, in combination:a. a tool holder; b. a tool bit on said tool holder; c. lateral faces to said tool bit, having the outline of an elongate isosceles trapezium comprising two equal sides and longer and shorter parallel sides and an elongate isosceles triangle having as its base the longer of said parallel sides; d. end faces to said bit forming the equal sides of said isosceles trapezium; e. two upper faces to said bit forming the equal sides of said isosceles triangle; f. a cutting edge to said bit at the junction of each upper face and the adjacent face; and g. means releasably clamping said tool bit on said tool holder, with one of said cutting edges projecting from said holder to form the operative cutting edge.
Claim 2
Dependent Claim
132 words
A lathe tool comprising, in combination:a. a tool holder; b. a tool bit on said tool holder; c. lateral faces to said tool bit, having the outline of an elongate isosceles trapezium comprising two equal sides and longer and shorter parallel sides and an elongate isosceles triangle having as its base the longer of said parallel sides; d. end faces to said bit forming the equal sides of said isosceles trapezium; e. two upper faces to said bit forming the equal sides of said isosceles triangle; f. a cutting edge to said bit at the junction of each upper face and the adjacent face; and g. means releasably clamping said tool bit on said tool holder, with one of said cutting edges projecting from said holder to form the operative cutting edge.
Claim 3
Dependent Claim
31 words
A lathe tool as claimed in claim 1, wherein at least a portion of said lateral faces converge towards one another away from said upper faces to form side clearance angles.
Claim 4
Dependent Claim
22 words
A lathe tool as claimed in claim 2, wherein the central portions of the laterial faces are substantially parallel to one another.
Claim 5
Dependent Claim
25 words
A lathe tool as claimed in claim 1, wherein the laterial faces are offset relatively to one another in the longitudinal direction of the bit.
Claim 6
Dependent Claim
46 words
A lathe tool as claimed in claim 4, wherein the entire part of a bit lateral face adjoining the back of the particular main cutting edge in the direction towards the middle of the bit extends parallel to the vertical longitudinal central plane of the bit.
Claim 7
Dependent Claim
31 words
A lathe tool as claimed in claim 1 wherein the lateral faces are quite parallel. means acts on the upper face of the tool bit remote from the operative cutting edge.
Claim 8
Dependent Claim
27 words
A lathe tool as claimed in claim 1, wherein the clamping means acts on the upper face of the tool bit remote from the operative cutting edge.
Claim 9
Dependent Claim
31 words
A lathe tool as claimed in claim 1, and further comprising a recess in said tool bit at the junction of said upper faces, said clamping means engaging in said recess.
Claim 10
Dependent Claim
23 words
A lathe tool as claimed in claim 8, wherein said clamping means comprises side projections engaging said lateral faces of said tool bit.
Claim 11
Dependent Claim
38 words
A lathe tool as claimed in claim 1 and 4, wherein the lateral faces of the tool bit adjacent the cutting edges are laterally offset in opposite directions relative to the vertical longitudinal central plane of the bit.
Claim 12
Dependent Claim
29 words
A lathe tool as claimed in claim 4, and further comprising a back-pressure stop in abutment with the end of the tool bit remote from the operative cutting edge.
Claim 13
Dependent Claim
41 words
A lathe tool as claimed in claim 11, wherein the back-pressure stop comprises an eccentric head of a bolt rotatably mounted transversely of said tool holder and abutting the end face of the tool bit remote from the operative cutting edge.
Claim 14
Dependent Claim
50 words
A lathe tool as claimed in claim 11, wherein the back pressure stop comprises a member freely rotatable in the tool holder about an axis substantially coincident with the cutting edge remote from the operative cutting edge and said member is provided with two abutment points abutting said tool bit.
Claim 15
Dependent Claim
58 words
A lathe tool as claimed in claim 13, wherein said back pressure stop member comprises the head of a bolt rotatably mounted in said tool holder, and a sector-shaped notch formed in said head, the side surfaces of said notch abutting the upper face and the end face of said tool bit remote from said operative cutting edge.
Claim 16
Dependent Claim
15 words
A lathe tool as claimed in claim 14, wherein said bolt head is axially bored.
Claim 17
Dependent Claim
28 words
A lathe tool as claimed in claim 4, wherein the lower face of said tool bit bounded by said shorter parAllel sides of said isosceles trapezium is planar.
Claim 18
Dependent Claim
59 words
A lathe tool as claimed in claim 4, wherein the lower face of said tool bit bounded by said shorter parallel sides of said isosceles trapezium comprises two flat faces converging downwardly towards one another and joining in a straight apex line resting on said tool holder, and wherein said tool holder is provided with a co-operatingly shaped recess.
Claim 19
Dependent Claim
86 words
A bit for a lathe tool comprising a body having lateral faces which have the outline of an elongate isosceles trapezium and an elongate isosceles triangle having as its base the longer of the two parallel sides of the trapezium, the end faces of the bit forming the equal sides of the trapezium, two inclined upper faces of the bit forming the two equal sides of the triangle and a cutting edge being formed at the junction of each upper face and the adjacent end face.
Claim 20
Dependent Claim
86 words
A bit for a lathe tool comprising a body having lateral faces which have the outline of an elongate isosceles trapezium and an elongate isosceles triangle having as its base the longer of the two parallel sides of the trapezium, the end faces of the bit forming the equal sides of the trapezium, two inclined upper faces of the bit forming the two equal sides of the triangle and a cutting edge being formed at the junction of each upper face and the adjacent end face.
Claim 21
Dependent Claim
24 words
A bit as claimed in claim 18, wherein the lateral faces are offset relatively to one another in the longitudinal direction of the bit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |