US3559704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jig for guiding a router
Assignee: Individual
•
Filing: 1969-05-01
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Granted: 1971-02-02
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Expires: 1989-05-01
Abstract
Abstract The jig is attached to a door jamb by pins mounted on longitudinal adjustable end brackets which are adjustable inwardly on the underside of and into an aperture in a plate which is engaged by the base of the router. The end brackets are also provided with spacers which extend to the surface of the door jamb. The side of the plate aperture is closed by a side plate which also extends to the door jamb. A corner guide having a notch, which fits against a corner of the end bracket, together with the inner ends of the end brackets, guides the router in forming a shallow groove for a strike plate, after a well for the catch box has been formed by the router, adjusted to cut to a greater depth. A removable template having a aperture for guiding the router in cutting the well rests against the inwardly extending ends of the end brackets and the corner guides, and is provided with a strip which engages the underside of the main plate. A pair of abutments, adjustable on the underside of the main plate, determine the spacing of the jig from the side of the door jamb. The end brackets and corner guides may also be adjusted to guide the router in cutting a different size or shape of groove, while an alternative template is used in guiding the router to cut a different size of well.
Inventors
- 👤 William H Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:27
CPC Classifications
B; B27; B27F; B27F5/00; B27F5/02; B27F5/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
165 words
A jig for guiding a router and the like associated with a guiding and depth control device, in cutting grooves and recesses of different depths and different lateral extent from a surface of an object of a material capable of being cut by said router and the like comprising: a plate having an aperture therein, the ends of said aperture being spaced apart a greater distance than the longitudinal extent of said groove; a bracket attached to said plate adjacent each end of said aperture and adjustable inwardly toward the center of said aperture to a position for guiding a router, through engagement with said guiding device, corresponding to the end edges of said groove; and a template corresponding in size to said aperture and insertable therein for engagement with the extended inner ends of said brackets, said template having an aperture provided with edges for engagement with said guiding device for guiding said router in cutting a recess of greater depth than said groove.
Claim 2
Dependent Claim
165 words
A jig for guiding a router and the like associated with a guiding and depth control device, in cutting grooves and recesses of different depths and different lateral extent from a surface of an object of a material capable of being cut by said router and the like comprising: a plate having an aperture therein, the ends of said aperture being spaced apart a greater distance than the longitudinal extent of said groove; a bracket attached to said plate adjacent each end of said aperture and adjustable inwardly toward the center of said aperture to a position for guiding a router, through engagement with said guiding device, corresponding to the end edges of said groove; and a template corresponding in size to said aperture and insertable therein for engagement with the extended inner ends of said brackets, said template having an aperture provided with edges for engagement with said guiding device for guiding said router in cutting a recess of greater depth than said groove.
Claim 3
Dependent Claim
81 words
A jig as defined in claim 1, wherein each said end bracket iS provided with: a base adapted to engage said surface and an offset connecting said base with a flange adjustable along the underside of said plate, so as to support said plate in spaced relation to said surface; and a pin mounted on each said base in a position to be driven into said object to attach said jig to said object in a desired position on said surface.
Claim 4
Dependent Claim
32 words
A jig as defined in claim 2, wherein each said end bracket is provided with spacing means adjacent its inner end extending to and engaging said surface with said jig positioned thereon.
Claim 5
Dependent Claim
55 words
A jig as defined in claim 1, including a guide secured to said plate adjacent each end of said aperture and adjustable longitudinally and laterally of said plate and toward and away from the extending inner ends of the corresponding brackets, said inner ends of said brackets having a lesser width than said plate aperture.
Claim 6
Dependent Claim
60 words
A jig as defined in claim 4, wherein each said guide is provided with an extending lip adapted to engage a corner of the inner end of the corresponding bracket to guide said router in cutting a groove having a greater longitudinal dimension at a position between said inner ends of said brackets than at a position between said guides.
Claim 7
Dependent Claim
74 words
A jig as defined in claim 5, including: longitudinal slots in said plate adjacent said aperture and at the positions of said guides; a slot in each said guide transverse to said plate slot; and means for each guide extending through said plate slot and said guide slot for adjustment of said guide to different positions, both longitudinally and laterally with respect to said plate, and for clamping said guide in an adjusted position.
Claim 8
Dependent Claim
54 words
A jig as defined in claim 1, wherein: said plate aperture extends to and is open at a side edge of said plate and said plate has a depending flange at each end of said aperture; and a side plate is removably attached to said flanges and closes said open side of said aperture.
Claim 9
Dependent Claim
79 words
A jig as defined in claim 1, including abutment means attached to said plate adjacent each end thereof and adjustable laterally of said plate, each said abutment means being engageable with a second surface of said object at right angles to said first mentioned surface and at a position spaced from said plate, said abutment means, in a predetermined adjusted position, spacing the opposite edge of said plate aperture a corresponding distance from said second surface of said object.
Claim 10
Dependent Claim
100 words
A jig as defined in claim 8, wherein: each said abutment means includes a spacing flange whose inner end is engageable with said second surface and a center leg connecting said spacing flange with an adjusting flange slidable along the underside of said plate and provided with spaced holes; a block attached to the underside of said plate is provided with a slot for movement of said adjusting flange laterally of said plate; a pin extending toward said adjusting flange in said block is engageable with said holes alternatively; and resilient means releasably urges said pin into the engaged hole.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |