US3742816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carving and engraving machine
Assignee: BRATTON STEVE
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Filing: 1970-10-02
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Granted: 1973-07-03
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Expires: 1990-10-02
Abstract
Abstract A carving and engraving machine is disclosed. The machine includes a work table on which a workpiece into which a pattern is to be carved is clamped. The work table is manually movable in a fixed plane in a pattern corresponding to a master pattern which is followed by a manually biasable stylus at a 1:1 ratio. A foot actuated hydraulic system is used to drive a cutting tool into the moving workpiece to an accurate depth, controlled by the setting of a novel motor assembly. The latter facilitates stroke length control and compensation for different material thicknesses carvable with different length cutting tools.
Inventors
- 👤 E Carnahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:43
CPC Classifications
B; B44; B44B; B44B3/00; B44B3/02; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/10; B23Q35/101; B23Q35/102; B44B3/001; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/301176; Y10T409/301624; Y10T409/30252
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
357 words
A machine for cutting a pattern in a workpiece, said machine comprising: a frame; a workpiece support structure including a work table on which a workpiece is supportable; first means for movably supporting said structure on said frame with said work table and the workpiece supported thereon being movable in a fixed preselected plane; a power unit including a member adapted to receive a cutting tool; second means including support means coupled to said frame for supporting said power unit above said work table and reciprocating said power unit relative to said work table, said second means further including bias means for biasing said power unit upwardly away from said work table, and means for controlling the maximum height of said power unit above said work table when said power unit is biased upwardly by said bias means; third means including first manually actuatable means for applying a downward force to said power unit to urge a cutting tool into engagement with said workpiece to a selected depth therein; a master table for supporting a pattern defining master; and fourth means including an arm projecting from said workpiece support structure to an end remote from said structure and overlying said master table, and second manually actuatable means disposed at said end for moving said work table and the workpiece thereon in said preselected plane in a selected pattern, said second manually actuatable means including a stylus with a tip extending toward said master and mounted for reciprocating movement relative to said arm, means for biasing said stylus tip upwardly away from said master, and at least one lever having at least one handle extending therefrom and engageable with said stylus and which when manually depressed urges said stylus tip downwardly relative to said arm to engage said master with said tIp following the pattern defined therein by the application of manual force to said arm in a plane parallel to said fixed plane, whereby said pattern is cut by applying a downward force to said first actuatable means and to said second actuatable means and moving said work table and the workpiece thereon in said preselected plane.
Claim 2
Dependent Claim
357 words
A machine for cutting a pattern in a workpiece, said machine comprising: a frame; a workpiece support structure including a work table on which a workpiece is supportable; first means for movably supporting said structure on said frame with said work table and the workpiece supported thereon being movable in a fixed preselected plane; a power unit including a member adapted to receive a cutting tool; second means including support means coupled to said frame for supporting said power unit above said work table and reciprocating said power unit relative to said work table, said second means further including bias means for biasing said power unit upwardly away from said work table, and means for controlling the maximum height of said power unit above said work table when said power unit is biased upwardly by said bias means; third means including first manually actuatable means for applying a downward force to said power unit to urge a cutting tool into engagement with said workpiece to a selected depth therein; a master table for supporting a pattern defining master; and fourth means including an arm projecting from said workpiece support structure to an end remote from said structure and overlying said master table, and second manually actuatable means disposed at said end for moving said work table and the workpiece thereon in said preselected plane in a selected pattern, said second manually actuatable means including a stylus with a tip extending toward said master and mounted for reciprocating movement relative to said arm, means for biasing said stylus tip upwardly away from said master, and at least one lever having at least one handle extending therefrom and engageable with said stylus and which when manually depressed urges said stylus tip downwardly relative to said arm to engage said master with said tIp following the pattern defined therein by the application of manual force to said arm in a plane parallel to said fixed plane, whereby said pattern is cut by applying a downward force to said first actuatable means and to said second actuatable means and moving said work table and the workpiece thereon in said preselected plane.
Claim 3
Dependent Claim
298 words
A machine for cutting a pattern in a workpiece, comprising: a frame; a workpiece supporting structure including a work table on which a workpiece is supportable; first means for movably supporting said structure on said frame, with said work table and the workpiece supported thereon being movable in a fixed preselected plane; a power unit including a chuck-like member adapted to receive a cutting tool for rotation about a fixed axis of rotation defined by said power unit; second means including support means coupled to said frame for supporting said power unit above said work table, said second means further including bias means for biasing said power unit upwardly away from said work table, and means for controlling the maximum height of said power unit above said work table when said power unit is biased upwardly by said bias means, a first power unit mounting plate defining an opening for guiding said power unit toward and away from said work table, and a second power unit mounting plate fixedly coupled to said power unit, said bias means being coupled to said first plate and extending through said second plate and including spring means between said plates for biasing said second plate away from said first plate, whereby said power unit coupled to said second plate is biased away from said work table; third means including first manually actuatable means for applying a downward force to said power unit to urge a rotatable cutting tool in said chuck-like member into engagement with said workpiece to a selected depth thereinto; and fourth means including second manually actuatable means for moving said work table and the workpiece thereon in said selected plane in a selected pattern, whereby said pattern is cut in said moving workpiece by the cutting tool engaged therein.
Claim 4
Dependent Claim
298 words
A machine for cutting a pattern in a workpiece, comprising: a frame; a workpiece supporting structure including a work table on which a workpiece is supportable; first means for movably supporting said structure on said frame, with said work table and the workpiece supported thereon being movable in a fixed preselected plane; a power unit including a chuck-like member adapted to receive a cutting tool for rotation about a fixed axis of rotation defined by said power unit; second means including support means coupled to said frame for supporting said power unit above said work table, said second means further including bias means for biasing said power unit upwardly away from said work table, and means for controlling the maximum height of said power unit above said work table when said power unit is biased upwardly by said bias means, a first power unit mounting plate defining an opening for guiding said power unit toward and away from said work table, and a second power unit mounting plate fixedly coupled to said power unit, said bias means being coupled to said first plate and extending through said second plate and including spring means between said plates for biasing said second plate away from said first plate, whereby said power unit coupled to said second plate is biased away from said work table; third means including first manually actuatable means for applying a downward force to said power unit to urge a rotatable cutting tool in said chuck-like member into engagement with said workpiece to a selected depth thereinto; and fourth means including second manually actuatable means for moving said work table and the workpiece thereon in said selected plane in a selected pattern, whereby said pattern is cut in said moving workpiece by the cutting tool engaged therein.
Claim 5
Dependent Claim
68 words
The arrangement as recited in claim 1 wherein said stylus comprises a cylindrical member extending through said arm with the end extending below said arm terminating in a tip and the end above said arm terminating in a flange, and said means for biasing said stylus comprising a coil spring surrounding said stylus portion extending above said arm, for applying an upward bias force to said stylus flange.
Claim 6
Dependent Claim
97 words
The arrangement as recited in claim 2 wherein said second means include a first elevation plate coupled to said frame through the support means of said second means, and disposed in a plane perpendicular to said selected plane, a second elevation plate associated with said first elevation plate and controllably movable with respect thereto only in a direction perpendicular to said selected plane, and means for connecting said first power unit mounting plate to said second elevation plate with the axis of rotation of said power unit at a selected angle with respect to said selected plane.
Claim 7
Dependent Claim
115 words
The arrangement as recited in claim 4 wherein said machine further includes a master table for supporting a pattern-defining master, said fourth means including an arm extending from said workpiece support structure to an end remote from said structure, with said second manually actuatable means disposed at said end, said second manually actuatable means comprising a stylus with a tip extending toward said master, means for biasing said stylus tip upwardly away from said master and a manually actuatable member for urging said stylus tip downwardly to engage said master, with said tip following the pattern defined therein by the application of manual forces to said arm in a plane parallel to said fixed plane.
Claim 8
Dependent Claim
63 words
The arrangement as recited in claim 5 wherein said manually actuatable member includes at least one lever arm which when depresSed downwardly urges said stylus tip toward said master and said arm includes at least one handle extending therefrom and located near said lever arm whereby depressing said lever arm and applying manual forces to said arm is facilitated by one operator hand.
Claim 9
Dependent Claim
68 words
The arrangement as recited in claim 6 wherein said stylus comprises a cylindrical member extending through said arm with the end extending below said arm terminating in a tip and the end above said arm terminating in a flange, and said means for biasing said stylus comprising a coil spring surrounding said stylus portion extending above said arm, for applying an upward bias force to said stylus flange.
Claim 10
Dependent Claim
48 words
The arrangement as recited in claim 7 wherein said axis of rotation is perpendicular to said selected plane, and the center of said work table is aligned with said axis of rotation when the center of said master table is aligned with the longitudinal axis of said stylus.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |