US3751856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Profile copying machine
Assignee: Individual
•
Filing: 1971-09-28
•
Granted: 1973-08-14
•
Expires: 1991-09-28
Abstract
Abstract A profile copying machine has a workpiece shaping tool and stylus, for following the profile of a model, mounted on a pivoted platform so that the tool and stylus have the same radius of movement. The stylus is in the form of a wheel with a radiused peripheral edge and the tool, which is in the form of a grinding wheel, has a similar edge so that the equivalent of point contact with the workpiece and model is obtained. The stylus may be adjusted towards and away from the model. The workpiece and model are mounted on a reciprocating table and the tool and stylus can progressively traverse across the reciprocating workpiece and model. The tool can be driven by an electric motor which acts as a balancing weight for the pivoted platform so that the platform has two stable positions: one position with the tool and workpiece in contact and the other position with the tool raised clear of the workpiece.
Inventors
- 👤 E Jorgensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:27
CPC Classifications
B; B24; B24B; B24B17/00; B24B17/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
127 words
A profile copying maching comprising: a. a base structure including a cross member; b. a table longitudinally reciprocable on the base structure and having means for locating a model and a workpiece; c. a platform on said cross member, said platform being pivotal and traversable across said table; d. a model stylus and a workpiece cutting tool, both having radius edges to give a point contact, carried on said platform and applying a force on the platform to pivot the platform in a direction to bring the stylus and tool into contact with the model and workpiece respectively; e. a first screw for controlling the vertical displacement of the stylus relative to the cutting tool; and f. a second screw for controlling the traverse of the platform.
Claim 2
Dependent Claim
127 words
A profile copying maching comprising: a. a base structure including a cross member; b. a table longitudinally reciprocable on the base structure and having means for locating a model and a workpiece; c. a platform on said cross member, said platform being pivotal and traversable across said table; d. a model stylus and a workpiece cutting tool, both having radius edges to give a point contact, carried on said platform and applying a force on the platform to pivot the platform in a direction to bring the stylus and tool into contact with the model and workpiece respectively; e. a first screw for controlling the vertical displacement of the stylus relative to the cutting tool; and f. a second screw for controlling the traverse of the platform.
Claim 3
Dependent Claim
64 words
The machine of claim 1 wherein said platform is counterbalanced in a manner such that it has two stable positions, one where the stylus contacts the model and the other where the stylus is clear of the model, wherein in the other position the workpiece cutting tool is clear of the workpiece, so that a workpiece can be inserted or withdrawn from the machine.
Claim 4
Dependent Claim
52 words
The machine of claim 1 wherein said stylus is in the form of a disc having a radiused peripheral edge, the disc being rotatable and having locking means for rendering it lockable in any rotational position so that an unworn part of the periphery can be brought to the model contacting position.
Claim 5
Dependent Claim
35 words
The machine of claim 1 wherein the workpiece cutting tool is a grinding wheel with a radiused peripheral edge, and wherein there is provided an electric motor on the platform for driving the grinding wheel.
Claim 6
Dependent Claim
28 words
The machine of claim 4 wherein the motor is so located on the platform as to provide, with an adjustable counterbalancing weight, two stable positions of said platform.
Claim 7
Dependent Claim
15 words
The machine of claim 4 having, mounted on said platform, a grinding wheel dressing cutter.
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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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |