US1003310A

US1003310A - Miter-box.

Info

Publication number: US1003310A
Authority: US
Inventors: James Garfield Wortham
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-11-30
Filing date: 1910-11-30
Publication date: 1911-09-12
Anticipated expiration: 1928-09-12

Description

Patented Sept. 12, 1911.

3 SHEETS-SHEET 1.

1 WITNESSES Q R INVENTOR -Q flu LTAMES GWQRTHAM U. Z1 0 By ATTURNE Y8 COLUMBIA PLANMRAPH 60., WASHINGTON, D. c.

J. G. WORTHAM.

MITER BOX. APPLICATION FILED NOV. 30, 1910.

1,003,310. Patented Sept. 12,1911.

1 3 SHEETS-SHEET 2.

WITNESSES INVENTOR Q 115111155 EWJR'IHAM a 2 a I BY ATTORNE Y8 J. G. WORTHAM.

MITER BOX.

APPLIGATIQN TILED NOV. 30, 1910.

Patented Sept. 12, 1911.

3 SHEETS-SHEET 3.

Ira 5mm? LTAMEs GwJR'III-IAM m m a w ATTORNE V8 JAMES GARFIELD WORTHAM, OF TULLAHOMA, TENNESSEE.

MITER-BOX.

Specification of Letters Patent.

Patented Sept. 12, 1911.

Application filed November 30, 1916. Serial No. 594,876.

To all whom it may concern:

Be it known that 1, JAMES G. WORTHAM, a citizen of the United States, residing at Tullahoma, in the county of Coffee and State of Tennessee, have made certain new and useful Improvements in Miter-Boxes, of which the following is a specification.

My invention is an improvement in miter boxes, and consists in certain novel constructions, and combination ofparts, hereinafter described and claimed.

The object of the invention is to provide a miter box, consisting of a bed, which may be widened or narrowed to conform with the dimensions of the work, a swinging arm supporting and carrying the saw guide, and capable of being lengthened and shortened, to correspond with the positions of the bed sections, and an adjustable back, together with a scale for indicating the angles assumed by the arm.

Referring to the drawings forming a part thereof Figure 1 is a plan view of the improved box, Fig. 2 is a section on the line 2-'2 of Fig. 1, Fig. 3 is an end view, Fig. 4 is a bottom plan View of the swinging arm and the connections, Fig. 5 is a partial top plan view of the arm, Fig. 6 1s a front view of one form of saw guide, Fig. 7 is a partial longitudinal section of the other form of guide, and Fig. 8 is a perspective view of a portion of the same.

The embodiment of the invention shown in the drawings, consists'of a. base bar 1, having at each end a cross head 2, provided with a foot 3. The base bar is also provided at its center with a cross head 4, and the rear end of the said cross head is provided with a vertical bearing 5. Each of the cross heads 2 is provided in its rear end with a transverse bearing, all of the bearings being in alinement, and a bar 6 is provided with rounded portions journaled in the bearings. The bar 6 is provided in its upper face with guideways 7, one at each end and in alinement, and the adjacent ends of the guidcways are spaced apart as at 8. A plate 9 is slidable in each of the guideways, the two plates forming the rear wall of the box, and the saw 10 is received between their adjacent ends, the space between the plates having at approximately its center the cross head 4. The bar is revoluble in the bearings, and is retained in its adjusted position by means of a slotted link 11, pivoted by one end to a depending integral arm 12 on the bar, the slot registering with an opening in an arm 14 extending rearwardly from the adjacent cross head, and a bolt 15, is passed through the slot and the opening and is engaged by a wing nut 16. The base bar is provided at its ends with forwardlyextending rods 17, upon which are slidable sleeves 18, having at their outer ends feet 18 and connected with the ends of longitudinal bars 19, the bars and sleeves forming a frame, which is one section of the other wall of the box, the other sect-ion consisting of the base bar and cross heads, and the sections are movable toward and from each other, the whole constituting an expansible and contractible wall, or bed for the box. Each of the rods is rigidly connected with the front end of the adjacent cross head, and the sleeves are retained in adjusted position by set screws 21, which traverse the sleeves and engage the rods. A bracket 22 is pivoted in the vertical bearing of the rear extension from the central cross head, by means of a bolt 23, and a rod 24: extends forwardly from the bracket. An arm 25 is provided with a sleeve slidable on the rod and the free end of the arm is provided with a handle 25*. A screw 26 passes through the outer section of the arm, and extends upwardly between two of the longitudinal bars, and a block 27 is journaled on the screw and arranged slidably between the bars, the upper face of the block having superimposed thereon a pointer 15 for a purpose to be presently described, and a saw guide to be also presently described, is engaged by the free end of the screw. A cam lever 48 is pivoted to the outer end of a bar 48 whose innerend is pivoted to the support 27, and thecam portion of the lever is adapted to engage the front face of a longitudinal bar 19 to lock the arm' 25 in its adjusted position. A. saw guide is pivoted to the outer section of the arm, on the vertical axis 27, the guide shown in Fig. 2 comprising a base 28, and upright backs, and the said bar engages the stops'to limit the depth of the saw cut.

For use with flexible saws, the construc tion shown in Fig. 6 is made use of. The said guide comprises a base 84: which may be pivoted to the swinging arm in the same manner as the base 28, and parallel spaced longitudinally slotted standards extend upwardly from the base. A roller 36 is journaled ona sleeve 37, arranged between the standards, and a bolt 38 passes through openings in the standards and the sleeve, and is provided on its threaded end with a nut 38. By tightening the nut the standards are clamped between the ends of the sleeve and the nut and bolt head respectively, but the sleeve is of greater length than the roller, so that the said roller is free to rotate, regardless of the clamping action on the sleeve. A pair of arms 40 are secured adjustably on the inner faces of the standards by screws 41, and the saw is secured therebetween, they forming a guide for the saw. By adjusting the roller in the longitudinal slots, the depth of the saw cut may be varied. A bar 42 square in cross section, and provided with rounded ends 43, has its said ends journaled in bearings 43 in the outer ends of the sleeves, and upon each face of the bar is a degree scale 44, and the pointer 45, before mentioned, cooperates with the scale. The scale indicates the angle of the arm or saw, to a transverse line perpendicular to the scale, and a plurality of scales is provided for the different positions assumed by the outer section of the bed with respect to the inner. The bar is rotatable in the bearings, thus permitting any of the scales to be brought into cooperative relation with the pointer.

Itwill be evident from the description,

- thatthe bed of the box, composed by the sections of the wall may-be widened or narrowed to conform with the dimensions of the work, and that the rear wall of the box, or back, may be adjusted from the perpendicular to any required angle with re spect to the bed, by loosening the wing nut and rocking the bar 6. The swinging arm which carries the saw guide also lengthens and shortensfto cor: respond with the width of the bed, and a scale is provided for a plurality of positions assumed by the sections of the bed with respect ,to each other. The sections of the rear wall of the box are adjustable toward and from each other and are retained in adjusted positions by set screws "60. The swinging arm consists of two sections, a fixed section pivoted to the fixed section of the bed, and "a movable section movable with the movable section of the bed. A plate5O gitudinal slot 53, which is engaged by a set screw 52, threaded into the cross head 2. \Vhen the back of the box is tilted, the set screws are loosened, so that the plate may follow the movement of the back.

The arms 30 before mentioned, are each provided with a lug 5et, through which passes a bolt 55 for securing the arms together, and each arm is provided on its inner face with a transverse recess 56 in which is received the reinforcing bar. 33 of the saw. A spring hook 57 is connected with the upper end of one of the standards, and is adapted to engage the arms to retain the saw in inoperative position.

I claim I 1'. A miter box comprising a bed composed of fixed and movable sections, the fixed section being provided with transversely projecting rods, and the movable section with sleeves sliding on the rods, means for fixing the sections with respect to each other, a bar journaled in the bed at the rear thereof and provided on its upper face with longitudinal alined guideways, means for retaining the bar in adjusted position, plates slidable in the guideways, means for fixing the plates, an arm comprising a fixed section pivoted to the fixed section of the bed at the center thereof, and a movable section having a handle and movable on the fixed section, a saw guide carried by the arm, the movable section of the bed being provided with a longitudinal guideway in which the guide is movable, means for fixing the arm with respect to the movable section, a bar square in cross section journaled on the movable section of the bed and providedon each face with a scale, and a pointer on the arm c0- operating with the scales.

2. A miter box comprising a bed composed of fixed and movable sections, the fixed section being provided with transversely projecting rods, and the movable section with sleeves sliding on the rods, means for fixing the sections with respect to each other, a bar journaled on the bed at the rear thereof and provided on its upper face with longitudinal alined guideways, means for retaining the bar in adjusted position, plates slidable in the guideways, means for fixing the plates, an arm comprising a fixed section pivoted to the fixed section of the bed, and a movable section slidable on the fixed section, a saw guide carried by the arm, and a guideway on the movable section of the bed in which the guide is movable.

3. A miter box comprising a bed composed of fixed and movable sections, the fixed section being provided with transversely projecting rods, and the movable section with sleeves sliding on the rods, means for fixing the sections with respect to each other, a bar journaled on the bed at the rear thereof and providedon its upper face with longitudinal 'i i. tat

alined guideways, means for retaining the bar in adjusted position, plates slidable in the guideways, means for fixing the plates, an arm comprising a plurality of sections movable longitudinally of each other pivoted to the fixed section of the bed, and a saw guide carried by the arm.

4. A miter box comprising a bed composed of fixed and movable sections, the fixed section being provided with transversely pro jecting rods, and the movable section with sleeves sliding on the rods, means for fixing the sections with respect to each other, a bar j ournaled on the bed at the rear thereof and provided on its upper face with longitudinal alined guideways, means for retaining the bar in adjusted position, plates slidable in the guideways, means for fixing the plates, a swinging arm pivoted to the fixed section of the bed and provided with a movable section moving with the movable section of the bed, and a saw guide on the arm.

5. A miter box comprising a bed composed of fixed and movable sections, the fixed section being provided with transversely proj ecting rods, and the movable section with sleeves sliding on the rods, means for fixing the sections with respect to each other, a bar j ournaled on the bed at the rear thereof and provided on its upper face with longitudinal alined guideways, means for retaining the bar in adjusted position, plates slidable in the guideways, means for fixing the plates, a swinging arm pivoted to the fixed section of the bed, and a saw guide carried by the arm.

JAMES GARFIELD VVORTHAM.

Witnesses:

F. K. WILLIAMS, Jr., J. F. BOYD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents, Washington, D. O.