Portable cutting device

• US 3,935,777 A
• Filed: 06/13/1974
• Issued: 02/03/1976
• Est. Priority Date: 06/13/1974
• Status: Expired due to Term

• Current Assignee: Alvin Lee Bassett
• Original Assignee: Alvin Lee Bassett
• Inventors: Bassett, Alvin Lee
• Primary Examiner(s): Yost, Frank T.
• Application Number:
  US05/478,934
• Time in Patent Office: 600 Days
• Field of Search: 83/478, 83/471.2, 83/471.3, 83/472, 83/473, 83/477.1, 83/486.1, 83/614, 83/701, 269/290
• US Class Current: 83/471.3
• CPC Class Codes: B23D 59/002 for the position of the saw blade mounting for swiveling or tilting a circular saw blade B27B5/36; portable power-driven circular saws with adjustment for cutting depth or amount of tilting B27B9/02
• CPC Class Codes: B23Q 9/0078 the guide means being fixed to a support
• CPC Class Codes: B27B 5/207 the saw blade being fitted on a movable carriage
• CPC Class Codes: B27B 5/24 the saw blade being adjustable according to depth or angle of cut
• CPC Class Codes: Y10T 83/7697 Tool angularly adjustable relative to work-support
• CPC Class Codes: Y10T 83/7726 By movement of the tool
• CPC Class Codes: Y10T 83/7734 With guard for tool
• CPC Class Codes: Y10T 83/7772 Angular relative to previous path
• CPC Class Codes: Y10T 83/97 Miscellaneous

Abstract

A portable cutting device is provided which comprises a table having first and second frame sections maintained in parallel spaced apart relationship by a plurality of attaching members extending between said first frame section and said second frame section, each of said first and said second frame sections having a longitudinally extending assembly mounted along an upper edge thereof, said longitudinal assemblies having a plurality of spaced apart transverse assemblies mounted thereon and extending substantially perpendicularly therebetween; guide means having a length sufficient to traverse a diagonal of said table and having sufficient rigidity to resist bending under stress and cutting means coacting with said guide to permit said cutting means to transverse a substantial portion of the length of said guide.

Claims

1. A portable cutting device comprising:

a table having

a. first and second frame sections maintained in parallel spaced apart relationship by a plurality of attaching members extending between said first frame section and said second frame section;

b. each of said first and said second frame sections having a longitudinally extending assembly mounted along an upper edge thereof;

c. said longitudinal assemblies having a plurality of spaced apart transverse assemblies slidably mounted thereon and extending substantially perpendicularly therebetween, a pair of longitudinal assemblies cooperate with a pair of transverse assemblies to define the perimeter of a quadrilateral which quadrilateral forms the perimeter of a working surface of said table;

guide means having a length sufficient to traverse a diagonal of said table and having sufficient rigidity to resist bending under stress; and

cutting means coacting with said guide to permit said cutting means to traverse a substantial portion of the length of said guide.

2. The portable cutting device of claim 1 wherein each of said longitudinal assemblies and said transverse assemblies comprise a horizontal plate, an outer retainer perpendicularly secured to said plate, an outer fence and an inner support juxtaposed and forced against said retainer by a biasing means, wherein the upper surface of the inner fence is below the level of the upper surface of the outer fence.

3. The portable cutting device of claim 2 wherein the inner edge of the horizontal plate of each of said longitudinal assemblies is serrated to provide indexing with a transverse assembly.

4. The cutting device of claim 3 wherein each end of each transverse assembly is provided with a pivotally mounted pointer which can be raised and secured in a horizontal position so that said pointer cooperates with indicia on the outer edge of the horizontal plate of said longitudinal assembly or of said transverse assembly.

5. The cutting device of claim 3 wherein each transverse assembly is provided with at least one detent assembly which selectively engages the serrated inner edge of the longitudinal assembly thereby securing the transverse assembly to the longitudinal assembly.

6. The cutting device of claim 5 wherein said horizontal plate of each end of each transverse assembly is provided with a detent assembly which selectively engages the inner serrated edge of the horizontal plate of a longitudinal assembly to secure the transverse assembly to the horizontal assembly.

7. The cutting device of claim 6 wherein said detent assembly comprises a handle and a detent slidably mounted on the transverse assembly such that the detent can engage the serrated edge of the longitudinal perimeter assemblies.

8. The cutting device of claim 1 wherein a pair of transverse supports extend between and are substantially perpendicular to the longitudinal assemblies and wherein said transverse supports are disposed within the perimeter of said quadrilateral.

9. The portable cutting device of claim 8 wherein said transverse supports are supported by said longitudinal assemblies such that said transverse supports may be moved along the length of the longitudinal assemblies while maintaining their perpendicular relationship.

10. A portable cutting device comprising:

a table having

a. first and second frame sections maintained in parallel spaced apart relationship by a plurality of attaching members extending between said first frame section and said second frame section;

b. each of said first and said second frame sections having a longitudinally extending assembly mounted along an upper edge thereof;

c. said longitudinal assemblies having a plurality of spaced apart transverse assemblies mounted thereon and extending substantially perpendicularly therebetween;

guide means having a length sufficient to traverse a diagonal of said table and having sufficient rigidity to resist bending under stress, said guide means includes a rail having a track extending substantially along the entire length of said rail, said rail is mounted on the table by attaching means, which means slidably engage an outer edge of the longitudinal or the transverse assemblies to permit lateral adjustment of the rail on the assemblies; and

cutting means coacting with said guide to permit said cutting means to traverse a substantial portion of the length of said guide.

11. The portable cutting device of claim 10 wherein said attaching members are rigid and are releasably secured to said first frame section and said second frame section by means of quick disconnect joints.

12. The portable cutting device of claim 11 wherein said joints are wedge type joints.

13. The portable cutting device of claim 10 wherein said attaching means includes a first clamp assembly fixed at one end of said rail, and a second clamp assembly movable along the length of said rail.

14. The portable cutting device of claim 13 wherein said second clamp assembly is slidably mounted in said track.

15. The portable cutting device of claim 13 wherein at least one of said attaching members is provided with a surface intermediate said first and second frame sections to which said second clamp assembly may be secured.

18. The portable cutting device of claim 14 wherein a retaining fence is inserted in said notches and a primary work support surface is provided which extends between said retaining fence and said first longitudinal assembly.

19. The portable cutting device of claim 18 wherein said primary work support surface is cut out to provide means for receiving and positively locating a miter box.

16. A portable cutting device comprising:

a table having

a. first and second frame sections maintained in parallel spaced apart relationship by a plurality of attaching members extending between said first frame section and said second frame section;

b. each of said first and said second frame sections having a longitudinally extending assembly mounted along an upper edge thereof;

c. said longitudinal assemblies having pivotally mounted sections provided with a locking arrangement such that said pivotal sections may be locked into position to selectively extend the length of said longitudinal assemblies;

d. said longitudinal assemblies having a plurality of spaced apart transverse assemblies mounted thereon and extending substantially perpendicularly therebetween;

guide means having a length sufficient to traverse a diagonal of said table and having sufficient rigidity to resist bending under stress; and

cutting means coacting with said guide to permit said cutting means to traverse a substantial portion of the length of said guide.

17. A portable cutting device comprising:

a table having

a. first and second frame sections maintained in parallel spaced apart relationship by a plurality of attaching members extending between said first frame section and said second frame section, said attaching members include upper surfaces that are notched at their mid-points for receiving a removable retaining fence;

b. each of said first and said second frame sections having a longitudinally extending assembly mounted along an upper edge thereof;

c. said longitudinal assemblies having a plurality of spaced apart transverse assemblies mounted thereon and extending substantially perpendicularly therebetween;

guide means having a length sufficient to traverse a diagonal of said table and having sufficient rigidity to resist bending under stress; and

cutting means coacting with said guide to permit said cutting means to traverse a substantial portion of the length of said guide.

20. The portable cutting device of claim 17 wherein a secondary work support surface is placed on said attaching members and retained by said notches at its front edge and extending to said second longitudinal assembly, and a primary work support surface is placed on said attaching members and extends between said secondary work support surface and said first longitudinal assembly to thus provide a continuous planer surface extending between said first and second longitudinal assemblies.

21. A portable cutting device comprising:

a table having knock-down frame sections forming a work supporting perimeter;

guide means having a length sufficient to traverse a diagonal of said table, said guide means having

a. a rail having a track extending substantially along its entire length and,

b. mounting assemblies slidably engaging said supporting perimeter, said mounting assemblies include a first clamp assembly fixed at one end of said rail and a second clamp assembly movable along the length of said rail, said first clamp assembly and said second clamp assembly having a plurality of pivotally connected members to allow said guide to be selectively positioned generally horizontally over the support perimeter; and

cutting means coacting with said guide to permit said cutting means to traverse a substantial portion of the length of said guide.

22. The portable cutting device of claim 21 wherein said first and said second clamp assemblies include adjustment means for controlling the relative vertical position of said guide relative to said perimeter.

23. The portable cutting device of claim 21 wherein said guide includes a laterally projecting fixed cradle adjacent said fixed clamp assembly positioned to support

said cutting means when not performing a cutting operation.

24. The portable cutting device of claim 23 wherein a carriage member is slidably mounted in said track intermediate said first and said second clamp assemblies and extends laterally therefrom.

25. The portable cutting device of claim 24 wherein said carriage includes a base plate having a fixed arcuate bracket and a pivotal arcuate bracket for mounting said cutting means onto said carriage.

26. The portable cutting device of claim 25 wherein said cutting means includes a circular-type saw having a rotary blade, a housing provided with a front and a rear mounting means that cooperate with said fixed and said pivotal arcuate brackets to secure said saw to said carriage.

27. The portable cutting device of claim 26 wherein said rear mounting means on said saw is pivotally connected to said fixed arcuate bracket, said front mounting means on said saw is connected to said pivotal arcuate bracket.

28. The portable cutting device of claim 27 wherein said front mounting means includes a rotational gear mechanism and said rear mechanism includes a releasable compression means to provide vertical and angular adjustment of said saw relative to said base plate.

29. The portable cutting device of claim 28 wherein said saw cradle includes a cradle plate provided with a slot that receives said saw blade when said saw carriage is positioned over said saw cradle, and a reference plate slidabley mounted on the top surface of said cradle plate such that it may be selectively positioned across said slot to provide a reference surface for locating the bottom of said saw blade.

30. The portable cutting device of claim 26 wherein said saw includes a primary handle having an indicator light, a secondary handle, an actuating switch on each handle, a blade guard, and a transparent chip deflector attached to said blade guard.

31. The portable cutting device of claim 30 wherein said blade guard is removable and is provided with an electrical connection which must be disconnected before the guard may be removed.

32. The portable cutting device of claim 24 wherein said cradle is provided with a latch member and saw carriage is provided with a catch to releasably secure said carriage to said cradle.