US1653386A - Miter box - Google Patents

Description

Dec. 20, 1927.

A. S. BEYLAND 4 MITER BOX FiledAug. 25. 1923 3 Sheets-Sheet l 5! vwwflfoz 14001 PH 5. BEYLA/VD.

6 Hanna! Dec. 20, 1927. 1,653,386

A. s; BEYLAND MITER BOX Filed Aug. 25, 1923 s Sheets-Sheet} nucn-toz 14001 PHS. BEYLA/VD.

Patented Dec. 20, 1927.

UNITED STATES ADOLPH S. 'BEYLAND, OF DAYTON, OHIO.

Mirna BOX.

' Applicationfiled. August 25, 1923. Serial No. 659,299.

This invention relates to miter boxes such as are used by carpenters and cabinet makers for sawing boards or strips at certain predetermined angles.

One object of the invention is to provide a miter box of such 'a character that the saw may be positioned to cut at an acute angle to the vertical plane orjat anacute angle to the horizontal plane ;'or to cut at both angles 1.0 simultaneously.

A further object of the invention is to provide such a device in which the, adjustments may be quickly and easily made and in which the adjustable parts may be rig' idly secured in their adjusted positions.

A further object of the invention is to Fig. 2 is a front elevation ofthefsame; Fig. 5

3 is a transverse section taken on the line 3-6 of Fig. 1; Fig.4 is a section taken on tl1e.liIie.&t-0f Fig. 3; Fig. 5 is a section taken on the line 5 5- of Fig. .1, looking in in thedirection opposite that indicated by the arrows; and Fig. 7 is a bottom plan view of the device. In'these drawings I have illustrated one embodiment oi my invention and have shown the same as comprising a work support consisting-of a base 1 and an upright back wall 2 extendingupwardly from-the rear edge of the base and rigidly secured theretor This work support is mounted on supporting brackets or standards 3-by means of which it may be supported on a bench and, if desired rigidlysecured thereto. The base or bottom member of the work support i has its intermediate portion depressed below the level of the end portions thereof; as shown att- The edges of thisdepressed portion diverge from the rear edgev of the ward part of the depressed portion of the base/is extended beyond the adjacent edge oithe base in the form of an arc, asshown at 5, so that the depressedportion as a whole is substantially sector shaped. The back wall has its intermediate portion cut away the. direction of the arrows; Fig. 6 is a sec tion taken on the line 5-5 of Fig. 1,look1ng base to the front edge'thereo f and the for.-

to provide a V-shaped opening 6 through which a saw may extend and which will permit the saw to be adjusted about a horizon- 'tal axis. v

Mounted upon the work support is a saw supportingstructure which is of such a character that the saw may be positioned at any angle to the vertical plane of the back wall 2 within the range of the edges of the depressed portion 1 of the base, and may be positioned at any angle to the horizontal plane of the base within the range of the diverging edges of the V-shaped opening 6 in the back wall. This saw supporting struc-. 7 ture comprises a pivoted arm or swinging member 7 which is mounted on a vertical axis adjacent to the back wall 2 and within bearing 9 formed at the apex of the sector 1 shaped depression in the base and is secured therein by a nut 10. fThe pivoted member 7 extends forwardly across the base and" has its forwardend arranged adjacent to the curved outer end of the sector 4. Carried by this pivoted member or "arm 7 are two upr ght saw guides arranged 'on the opposite sides of the base. These saw guides may be of any suitable character and may be secured to the swinging arm in any suitable manner but, as here shown, that arm is provided with a longitudinal bore in which is mounted a rod or shaft 11 the end portions of which extend beyond the respective ends of the arm and are tapered, as shown at 12. Mounted on the respectivetapered portionsof the rod 11 and-held against rotation thereon are brackets 13 and 1 1; each of which is pro- 'vided with an upwardly extending tubular part15, those portions of the tubular parts lying. above the base being provided with vertical slots 16to receive the saw and the two tubular members being secured in fixed 10w relation one to the other so that the slots will be in perfect 7 alinement. Slidably mounted within each of the tubular members 15 is a rod 17 having a longitudinal slot 18 which registers with the slot 16 in the tubularmemb'er. At its upper end the rod 17 is provided with an enlarged portion or head 19 having an opening 20 to receive the stifiening bar 21 of a miter saw 22. The inner portions or rods 17 of the telescoping saw guides may be elevated to permit the saw to e inserted therein above the level of the the tubular member 15 of the guide and. thus limit the downward movement of the saw. The screw may be adjusted to accommodate the same to the width of the saw that is being 7 used and when the adjustment has beenmade of the swinging member 7 so as to position the saw at various angles with relation to the the stop or screw may be rigidly secured in its adjusted position by a lock nut 26.

"It will be apparent that the. saw supporting structure maybe swung about the axis vertical back wall of the work support. This adjustment may be accomplished and the saw support may be held in its adjusted position in any suitable manner but, in the present instance, I have provided a locking device by means of which the saw supporting structure may'be secured in any position with. relation to its vertical axis. Tothis end the forward end of the swinging arm of the saw supporting structure is provided with a depending portion 27 which, in the present instance, is sector shaped and is provided with a lug 28 which, in the present instance, is formed separate therefrom and has a screwthreaded opening adapted to receive a screw threaded rod or bolt 29 the upper end of which is slightly reduced in size andtapered as shown at 30. The lower side of the curved outer portion 5 of the part i of the base is provided with an arcuate groove 31 the side walls of which converge toward its base so as to provide a tapered seat for the tapered end of the'rod or bolt 29. Inthe present construction, the depending plate 27 is provided with a second lu b 32 to receive and guide the unthreaded lower portion of the pin or bolt 29. Rigidly secured to the bolt 29, below the lug 32, is a handle 33 by means of which the bolt may be rotated and the screw threads caused to move the tapered portion30 thereof into and out of wedging contact with the converging walls ofthe groove 31 of the base. It

willbe apparent therefore that by loosening the locking bolt 29 and then grasping any convenient part of the saw supporting structure the latter can be moved about a vertical axis to a desired position and by then operating the handle 33 in the opposite direction the structure can be rigidly secured in that position. Preferably a curved plate or strip 34 is mounted at itsends on the forward edge of the base 1 and extends about the curved edge of the depressed portion 4 of the base. This plate is provided with 'graduations which may, if desired, be'divided into degrees and minutes andrwhich are adapted to register with an index or mark 35 on the adjacent portion of the swinging arm 7, thereby enabling the angular position of the saw to be accurately adjusted.

The saw guides are also adjustable about I a horizontal axis to permit the saw to be positioned at an acute angle to the horizontal plane of the base. As has been stated the saw guides are carried by brackets 13 and 14 rigidly secured to the ends of a rod or shaft 11 which is journaled in the herein the swinging arm 7 so that the saw'guides'move with the arm 7 about its vertical axis and may be rotated relatively thereto about a horizontal axis. In orderto secure the saw guides in their adjusted'positions' with re lation to the horizontal axis the supporting bracket 14 has a depending portion 36 pro vided at its lowerend with a bearing :37 in which is slidably mounted a rod or bolt 38 ,7

which extends througha' curved slot 39 in the plate 27 and is provided with a head40 to engage that plate on the inner side thereof. The other end of the bolt 38 extends beyond the outer end of the bearing '37 and is screwthreaded to receive a nut 31 which may; if desired, be provided witha flanged head 42 provide a hand grip therefor. By screwing the nut down. against the adjacent endof the bearing 27 the head' iO will "be drawn against the plate 27 and the bearing and plate clampedxtogetherand lOU consequently the bracket 14: will be looked rigidly against movement'with relation to. the plate 27 The plate 27 being'carried by the swinging arm 7 the saw supporting structure as a whole can be moved about the vertical axis regardless ofthe position'of the saw guides with relation to the horizontal axis, and likewise the saw guides may be moved about the horizontal axis re gardless of the position of the arm 7 wit relation to this vertical axis. The operation of the device will be readily understood from the foregoing description and it will be apparent that I haveprovided a miter box of such aconstruction that the saw may be positioned at any-'angle to the vertical plane within the range'of adjustment and at anyangle to the horizontal plane within the range of adjustment, there-- by enabling the work to be cut at any desired angle and, further, enabling the cut to be made at acute angles both't-o the vertical plane and to the horizontal plane. Further,- it will be apparent that the device is very simple in its construction and operation, that the adjustments may be quickly and easily made and that when adjusted the movable parts are rigidly held in their adjusted positions. Further, the device is of a strong durable character and will not be easily broken or disarranged so as to interfere with its operation.

While I have shown and described one embodiment of my invention I wish it to be understood that I do not desire to be limited to the details thereof as various modifications may appear to a person skilled in the art.

Having now fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a miter box, a work support, a saw supporting structure comprising a member extending transversely to said work support and pivotally mounted at one end for movement about a'vertical axis, saw guides carried by said pivoted member and arranged in fixed relation one to the other, said work support having an arcuate tapered groove in the lower surface thereof, a locking bolt carried by said pivoted member and having a ta-v pered end adapted to enter said groove, and

means for actuating said bolt to move said supporting structure comprising a member extending transversely to said work support and pivotally mounted at one end for movement about a vertical axis, saw guides carried by said pivoted member and arranged in fixed relation one to the other, said work support having a curved portion provided with an arcuate tapered groove in the lower surface thereof, a plate rigidly secured to and depending from said pivoted member adjacent to said groove, a screw threaded lug carried by said plate, a boltscrew threaded into said lug and having a tapered end, adapted to enter said groove with a wedging action, and means. for actuating said bolt.

In testimony whereof, I afiix my signature hereto.

ADOLPH S. BEYLAND.

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