Patent US3662445A successfully refreshed from Google Patents.
US3662445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lathe tools
Assignee: Individual
•
Filing: 1970-09-15
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Granted: 1972-05-16
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Expires: 1990-09-15
Abstract
Abstract A parting off tool has a cutting tip which is clamped between a lower blade member and the front of an upper clamping member. The clamping is effected by rotating the clamping member about a pivot point using a screw adjustment made on the rearward part of the clamping member, the blade member being held stationary. The cutting tip is adjustable using a pusher rod bearing against the rear face of the tip. A chamfer cutting blade can be mounted alongside the blade member so that the same tool can be used both for parting off and also for putting a chamfer on the workpiece left in a lathe. The combined operation can be performed simultaneously in some instances.
Inventors
- 👤 Derek Whitaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:38
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/04; B23B29/043; B23B27/00; B23B27/14; B23B27/16; B23B27/1685; B23B2220/00; B23B2220/28; Y; Y10; Y10T; Y10T407/00; Y10T407/22; Y10T407/2208; Y10T407/221; Y10T407/2222; Y10T407/2238; Y10T407/224; Y10T407/2272; Y10T407/2282; Y10T407/229; Y10T407/25
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
258 words
A parting off tool comprising a tool body against which is located a blade member and a clamping member disposed above said blade member, said clamping member being pivoted about a pivot attached to said tool body and clamping a cutting tip between said blade member and said clamping member, the clamping force being provided by a clamp screw passing through a threaded hole in said clamping member and bearing against a surface, whereby screwing said clamp screw into said hole lifts one end of said clamping member which pivots about said pivot to move the other end thereof into engagement with said cutting tip, the bottom of said cutting tip being shaped to fit into a groove formed in the top surface of said blade member to prevent sideways displacement of said tip relative to said blade member, said tip pusher being located behind said cutting tip between said clamping member and said blade member, and being adjustable in position to control the setting of said cutting tip in said tool, said blade member being held in position relative to said tool body by a screw and nut arrangement, the screws of which pass through said blade member and also through a chamfer blade having a chamfer cutting member mounted in a top corner thereof, said chamfer blade being located alongside said blade member with said chamfer cutting member substantially on a level with said cutting tip, the nuts of said arrangement holding said chamfer blade, blade member and tool boDy in fixed relationship to each other.
Claim 2
Dependent Claim
258 words
A parting off tool comprising a tool body against which is located a blade member and a clamping member disposed above said blade member, said clamping member being pivoted about a pivot attached to said tool body and clamping a cutting tip between said blade member and said clamping member, the clamping force being provided by a clamp screw passing through a threaded hole in said clamping member and bearing against a surface, whereby screwing said clamp screw into said hole lifts one end of said clamping member which pivots about said pivot to move the other end thereof into engagement with said cutting tip, the bottom of said cutting tip being shaped to fit into a groove formed in the top surface of said blade member to prevent sideways displacement of said tip relative to said blade member, said tip pusher being located behind said cutting tip between said clamping member and said blade member, and being adjustable in position to control the setting of said cutting tip in said tool, said blade member being held in position relative to said tool body by a screw and nut arrangement, the screws of which pass through said blade member and also through a chamfer blade having a chamfer cutting member mounted in a top corner thereof, said chamfer blade being located alongside said blade member with said chamfer cutting member substantially on a level with said cutting tip, the nuts of said arrangement holding said chamfer blade, blade member and tool boDy in fixed relationship to each other.
Claim 3
Dependent Claim
38 words
A combination tool according to claim 1, in which said screws pass through horizontal slots in said chamfer blade whereby fore and aft adjustment of the position of said chamfer blade relative to said blade member is permitted.
Claim 4
Dependent Claim
43 words
A combination tool according to claim 1, in which a chamfer blade pusher screw is mounted in adjustable relationship on said tool body to bear against the rearmost end of said chamfer blade to assist in effecting said fore and aft adjustment thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |