US3731572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miter box
Assignee: Individual
•
Filing: 1970-09-28
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Granted: 1973-05-08
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Expires: 1990-09-28
Abstract
Abstract The invention relates to an improved miter box. It comprises a board for supporting a work piece that is underneath the work piece; an arm rotatable on the plane of the board; a pair of parallel rails fixed to the board for guiding a circular saw; slots in the rails through which the work piece passes; the work piece being guided along the arm towards the saw; means on the board for designating the angle of the arm with the path of the saw; and means fixing this angle by selectively maintaining a rigid connection between the arm and the board.
Inventors
- 👤 R Crooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:11
CPC Classifications
B; B23; B23Q; B23Q9/00; B23Q9/0064; B23Q9/0078; B23Q9/0092; B27; B27G; B27G5/00; B27G5/02; B27G5/023; Y; Y10; Y10T; Y10T83/00; Y10T83/768; Y10T83/7684; Y10T83/7693; Y10T83/7697; Y10T83/849; Y10T83/853; Y10T83/855; Y10T83/856; Y10T83/857; Y10T83/869
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
353 words
In a miter box apparatus, the improvements comprising: a board supporting the work piece; a pair of parallel rails fixed on the top surface of the board; said rails supporting and defining a horizontal translational path for movement of a saw member sliding thereon; an arm journaled on top of said board and operable to rotate, about the axis of journaling, in a plane parallel to the plane of the board; an illustration and designation, on the top surface of said board, of lines indicating angles of one surface of said arm with said path of said saw member; said surface, said board, said illustration and designation and a substantial portion of the length of the work piece being readily observable during sawing; said apparatus allowing a substantial portion of the length of the work piece to be manually controlled for position during sawing; said board, rails and arm being made of wood and said illustration and designation being affixed to the top surface of the board; said axis of journaling passing through one of said rails; said rails having slots in the middle portions thereof allowing the work piece to pass therethrough; a depression in the underside of said arm at one end of the arm enclosing a portion of said journaling means; said illustrationand designation designating said angles by illustration of a shape of an arrow, and the end of the arm, remote from said axis of journaling, being shaped in the form of an arrow substantially conforming to the arrow of the illustration and designation aforesaid; an arcuate slot in said board having parallel circular arc segments defining sides thereof that have co-incidental radii in the plane of the top surface of said board and also being parallel to radii in the plane of the top surface of the board intersecting said axis of journaling of said arm; and means selectively fixing the position of the arm with respect to the board, said fixing means having portions extending through said arcuate slot, and feet underneath said board supporting at a raised portion above the surface upon which the feet rest.
Claim 2
Dependent Claim
353 words
In a miter box apparatus, the improvements comprising: a board supporting the work piece; a pair of parallel rails fixed on the top surface of the board; said rails supporting and defining a horizontal translational path for movement of a saw member sliding thereon; an arm journaled on top of said board and operable to rotate, about the axis of journaling, in a plane parallel to the plane of the board; an illustration and designation, on the top surface of said board, of lines indicating angles of one surface of said arm with said path of said saw member; said surface, said board, said illustration and designation and a substantial portion of the length of the work piece being readily observable during sawing; said apparatus allowing a substantial portion of the length of the work piece to be manually controlled for position during sawing; said board, rails and arm being made of wood and said illustration and designation being affixed to the top surface of the board; said axis of journaling passing through one of said rails; said rails having slots in the middle portions thereof allowing the work piece to pass therethrough; a depression in the underside of said arm at one end of the arm enclosing a portion of said journaling means; said illustrationand designation designating said angles by illustration of a shape of an arrow, and the end of the arm, remote from said axis of journaling, being shaped in the form of an arrow substantially conforming to the arrow of the illustration and designation aforesaid; an arcuate slot in said board having parallel circular arc segments defining sides thereof that have co-incidental radii in the plane of the top surface of said board and also being parallel to radii in the plane of the top surface of the board intersecting said axis of journaling of said arm; and means selectively fixing the position of the arm with respect to the board, said fixing means having portions extending through said arcuate slot, and feet underneath said board supporting at a raised portion above the surface upon which the feet rest.
Claim 3
Dependent Claim
29 words
The apparatus of claim 1 and means selectively operable to fix a selected angle of said surface of said arm with respect to the path of said saw member.
Claim 4
Dependent Claim
29 words
The apparatus of claim 1 wherein said saw member comprises a circular saw driven by a motor, the motor and the circular saw operable to slide on said rails.
Claim 5
Dependent Claim
34 words
The apparatus of claim 1 and feet underneath said board supporting said board in a raised position such that the bottom surface of said board is above the surface that the feet rest on.
Claim 6
Dependent Claim
31 words
The apparatus of claim 1 wherein said board, rails, and arm are made of wood and said illustration and designation comprises a decal affixed to the top surface of said board.
Claim 7
Dependent Claim
29 words
The apparatus of claim 1 wherein said board, rail, and arm, are made of wood and the illustration and designation is painted on the top su7face of said board.
Claim 8
Dependent Claim
71 words
The apparatus of claim 1 wherein said arm fixing means comprises a bolt passing through said arcuate slot and one end of said arm, the head of the bolt engaging the bottom surface of said board, the tail of the bolt being above the top surface of said arm, and a wing nut threaded on the tail of said bolt and operable to be screwed toward the head of the bolt.
References Cited (Backward Citations)
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Cited
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Cited
GB503487A
Cited
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Cited
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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) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |