Patent US3878875A successfully refreshed from Google Patents.
US3878875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dovetail fixture
Assignee: Robert Bosch Tool Corp
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Filing: 1974-05-15
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Granted: 1975-04-22
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Expires: 1994-05-15
Abstract
Abstract This invention is concerned with dovetail fixtures for clamping and holding orthogonally disposed workpieces and for guiding a cutting tool. A slotted guide member in the form of a comb or template is held against one of the workpieces to guide a router or similar cutting tool as the bit traces the dovetail pattern. A different cutter guiding template is employed herein. In addition novel workpiece locating members are movably attached to both the horizontal and the vertical work-receiving surfaces for spacing workpieces relative to each other during cutting.
Inventors
- 👤 Jr Wilfred M Mccord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:05
CPC Classifications
B; B27; B27F; B27F1/00; B27F1/08; B27F1/12; B27C; B27C5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
In a dovetail fixture of the type employing a template for guiding a cutting tool in cutting mortises and tenons, means for slightly moving said template in any direction to compensate for eccentricity of router bit guide bushings including a circular disc adapted on insertion to fit rotatably within a hole in the template, snap-in retention means holding said insert disc in the template hole, said insert disc having an eccentric orifice therethrough which is moved slightly in any direction on partial rotation of the disc within the hole.
Claim 2
Dependent Claim
89 words
In a dovetail fixture of the type employing a template for guiding a cutting tool in cutting mortises and tenons, means for slightly moving said template in any direction to compensate for eccentricity of router bit guide bushings including a circular disc adapted on insertion to fit rotatably within a hole in the template, snap-in retention means holding said insert disc in the template hole, said insert disc having an eccentric orifice therethrough which is moved slightly in any direction on partial rotation of the disc within the hole.
References Cited (Backward Citations)
US2764191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |