US851023A

US851023A - Miter-box.

Info

Publication number: US851023A
Authority: US
Inventors: Robert L Mccartney
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-03-15
Filing date: 1906-03-15
Publication date: 1907-04-23
Anticipated expiration: 1924-04-23

Description

- y PATENTED APR.23,1907.` V KLMOGARTNEY,

MITER BOX. APPLIUATIUN FILE-D MAR. 15. 190s.

at Ottumwa, in the county of Wapello and or bottom preferably of open-work structure ROBERT L. MOCARTNEY, OF OTTUMWA, IOWA.

NIITER-BOX.

Specication of Letters Patent.

Patented April 23, 1907.

Application filed March 15, 1906. Serial No. 306,250.

T all w/Lom t may con/cern,.-

Be it known that I, ROBERT L. MCCART- NEY, a citizen of the United States, residing State of Iowa, have invented new and useful Improvements in Miter-Boxes, of which the following is a specification.

This invention relates to a miter-box, and the primary object of the same is to provide a device of this class having a swinging sawsupporting frame capable of fixed adjustment at varying angles with relation to the bed of the box, and also movable closely against the back of the latter to render the complete box structure compact in form for convenient disposition or storage in a toolchest.

A further object of the invention is to provide an organization of elements individually contributing to the efficiency of operation of the saw and variations and accuracy in the work performed therewith and having strength and durability and comparatively l economical in cost of manufacture.

The invention consists in the construction and arrangement of parts whichwill be more Afully hereinafter set forth in preferred form.

In the drawings, Figure 1 is a perspective view of a miter-box embodying the features of the invention. Fig. 2 is a transverse vertical section through the swinging saw-supporting frame and box-body. Fig. 3 is a side elevation showing portions of the saw-supporting means and the operating devices therefor to elevate and depress the saw. Fig. 4 represents elevations of the saw-engaging posts of the swinging frame. Fig. 5 is a transverse vertical section through the swinging arm. Fig. 6 shows detail elevations of a part of the device to illustrate the formation of certain slots therein.

Similar numerals of reference are employed to indicate corresponding parts in the several views.

The numeral 1 designates a metallic base and provided with bosses 2 at regular intervals at the rear side to receive the fastenings of an upwardly-projecting back 3, the latter being referably formed in one piece with vertical) flutes to strengthen the same and with its highest ortion at the center. The back 3 `is gradual y reduced in vertical extent toward its opposite extremities, and projecting forwardly from the high central portion thereof is a quadrant 4, with a plurality of notches 5 formed in the under edge thereof at regular intervals. The base 1 is provided or formed with four small legs 6 at the corners, which are preferably pointed to insure a staple position of the box when disposed on a rest or bench, and at the front the base has upwardly-projecting lugs or ears 7, one adjacent to each end, and in these ears clamping-screws 8 are mounted and have their inner ends arranged to contact with the outer edge of a wood bottom 9, which is firmly held between the lugs or ears 7 and the back 3 and serves as a means for directly receiving the work to be cut. In the center of the back 3 a vertical opening 10 is formed, and therein is disposed a hollow post 11, which is mounted at its upper and lower ends in bosses 12 and 13.

Vertically movable in the post 11 is a sawadjusting member 14, having a swinging arm 15 loosely mounted on the upper end thereof and provided with a notch or slot 16a to fit over the upper edge of the quadrant 4. The arm 15 is hollow and has a post 16 immovably depending from the outer end thereof and of tubular form. In the post 16 is a sawadjusting member 17, the members 14 and 77 having the ends of an adjusting-chain or an analogous device 38'sccured thereto and movable `upwardly through openings 19 in the bottom of the arm 15 and 'over guide-pulleys 20 and then inwardly toward the center of the arm 15, where they are secured to di ametrically opposite portions of a rotatable adjusting head or disk 21, secured to a pintle or spindle 22, having bearing at its opposite extremities in enlarged central portions or sheathings 23, forming part of the said arm.

Against one of the enlarged portions or sheathings 23 a ratchet-wheel 24 is secured, and on the adjacent end of the pintle or spindle 22 is nxed an operating-lever 25, having a dog or pawl device 26 to engage the teeth of said ratchet-wheel for locking the head or disk 21 against movement after adjustment thereof, and also

members

14 and 17 through the medium of the chain 38, has been made. The

posts

11 and 16 are vertically slotted at diametrically opposite portions, as at 27 and 28, the slot 27 of the post 11 being closed at opposite extremities and the slot 28 of the post 16 opening through the bottom of the IOO latter. The Slots 27 and 2s 0f the posts 11 back 33 of the saw, which is transversely increased with respect to the blade 34, as shown by Fig. 1. By this means the saw when applied to the swinging arm will be held up by the

members

14 and 17 and movable with said members in the

posts

11 and 16 to accommodate various thicknesses of material placed upon the bed 9. The

sawadjusting members

14 and 17 have headed

studs

35 and 36 projecting inwardly therefrom to form fastening means for the lower ends of the chain 38, said headed studs projecting through the slots 27 and 28 of the

posts

11 and 16. j

The saw can be raised and lowered by means just set forth with respect to the bed 9 as required or found necessary in view of the work operated upon, and as the post 16 and its adjusting member 17 stands or depends over the bed 9 it is obvious that the lower toothed edge of the saw must be clear, and the depth of the cut of the saw may be quickly changed by operating the head or dis i 21 in the proper direction without in the least modifying the association of the saw with the posts and adjusting members therefor. lIt 1s also necessary to level the saw with respect to the work or to compensate for variations in the latter, and to provide for this contingency a sleeve 37 is swiveled on the lower reduced end or stem 39 of an adjustingscrew 40, engaging internal screw-threads in' the upper portion of the member 17 and having a head 41, which is projected above the top of the latter post for engagement with a screw-driver or other device to raise or lower the screw 40, and the headed stud 36 having the chain 38 attached thereto. The head 41 will be of such diameter as to freely move up through and in the ost 16, the said head being inserted in the atter post from the bottom of the latter. The lower reduced end or stem 39 is held in the sleeve 37 by upsetting or swaging the lower `end thereof, as shown.

Fulcrumed to the outer portion of the arm 15 is a locking-lever 42, which is suitably spring-actuated and has its outer engaging end 43 projected from the post 16 and provided at its inner end with a locking-head 44 to engage the notches 5 or the surface of the quadrant 4 between said notches to establish either a positive lock for the adjustment of the arm 15 or 'a frictional binding which may be used in some instances for holding the arm in adjustment between the points of location of the notches 5. The post 16 above the outwardly-projecting engaging end 43 of the locking-lever 42 has a rigid thumb-engaging piece 45 to facilitate the operation of the said locking-lever. This locking-lever will be provided with suitable spring means, as at 46, and in the operation thereof an upper pressure is exerted on the outer end 43, which forces the head 44 downwardly and out of engagement with one of the notches 5, and while the lever is so held the arm 15 may be moved around the quadrant 4 to any point desired and locked against movement by permitting the head 44 to engage another notch 5 or to be frictionally held between any two of the notches.

The work to be cut is placed on the bed 9, as in the ordinary miter-boxes, and after proper adjustment the saw is reciprocated across the bed and work. When the box is not in use, the saw is removed from the

posts

11 and 16 and the arm 15 turned closely against the back to permit the box to be conveniently disposed in a tool-chest or other place of storage. By thus throwing the arm rearward breakage thereof will be avoided and more space provided over the bed 9 for the disposition of other tools within the toolchest.

The improved miter-box will be found unusually convenient, and with the exception of the bed 9 the entire structure will be composed of metal of a suitable character.

Having thus described the invention, what is claimed as new is- 1. In a miter-box, the combination with a` base and back, of a quadrant projecting outwardly from the upper portion of the back a swinging saw-supporting arm cooperating with the quadrant, and devices connected to the arm for engaging and simultaneously and vertically adjusting different parts of the saw, a part of the said devices being vertically adjustable independent of the remaining part.

2. In a miter-box, the combination with a base and back, of a swinging saw-supporting arm held by the back and movable over the base, means for locking the arm against movement, and devices carried by the arm for engaging and simultaneously and vertically moving different parts of a saw, one of said devices being adjustable vertically independent of the other.

3. In a miter-box, the combination with a base, of a swinging saw-carrying arm movable over the base and provided withdevices for vertically adjusting a saw and permitting the latter to freely move therethrough, a rotatable adjusting-head, and flexible means connected to the head and said devices.

4. In a miter-box, the combination of a bed, a swinging arm disposed thereover and provided with posts through which a saw iS IOO IIO

IIS

ISO

freely movable, vertically-adjustable holding devices in the post for a saw, and a rotatable member carried by the arm and having ilexible elements connected to the said holding devices for simultaneously moving the latter.

5. In a mitenbox, the combination with a base, of a holdingdevice projected over the base, a swinging saw-supporting arm engaging the holding device and provided with vertically-movable devices for supporting a saw in operative relation to the base, means for simultaneously moving said devices in a vertical direction, an adjusting-screw coperating with the upper extremity of one of said devices to adjust the same independent of the other of said devices, and a locking device to secure the arm in adjusted position.

6. In a miter-box, the combination with a base, of a quadrant rigidly held over a portion of the base, a swinging saw-supporting arm engaging the quadrant and having depending tubular posts, devices vertically movable in the posts and having slots to receive a saw, and mechanism carried by the arm for simultaneously and vertically moving the said devices and the saw engaging the same and including a rotatable head and flexible elements connected to the head and the said devices, the elements being secured to opposite portions of the head.

7. In a miter-box, the combination of a base, a back rising therefrom, a swinging armimovable over the base and foldable in close relation to the back, vertically-movable devices at opposite extremities of the arm for supporting a saw and through which the latter is freely slidable, flexible means attached to the said devices below the arm, and a member carried by the latter for simultaneously adjusting the flexible means.

8. In a miter-box, the combination of a base, a back rising from the base, a swinging through, saw-holding members vertically 4adjustable in the said posts, a rotatable adjusting-head carried by the arm, flexible means attached to diametrically opposite portions of the head and also to the sawholding members in the post, and means in one of the posts for adjusting the saw to compensate for variations in the horizontal positions thereof.

9. In a miter-box, the combination of a base, a swinging arm held above and movable over the base and provided with depending posts having slots therein for the recepe tion and free movement of a saw therethrough, saw holding and adjusting members vertically movable in the posts, a ro tatable adjusting-head carried by the /arm, and having flexible means attached thereto and to the said members, and devices for locking the said head against movement.

10. In a miter-box, the combination of a base, an arm having swinging movement over the base and disposed in horizontal position, the said arm having terminal posts with slots therein for the reception and free movement therethrough of a saw, slotted holding members for the saw in the said posts, means for simultaneously adjusting the said members, and an adjusting-screw in one of the posts cooperating with the sawholding member in the latter to compensate for horizontal variations ofthe saw.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

ROBERT L. MCCARTNEY. Witnesses:

FREDK. DIMMITT, J. H. MCCARTY.