US295920A - Miter-gage - Google Patents

Description

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NO zQzO, Patented Apr. 1,1884.

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E. HIPOLITO.

MITBR GAGE.

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CAMPBELL, or Los ANenLns, CALIFORNIA.

MiTER-GAGE SPECIFICATION forming part of Letters Patent N. 295,920, dated April 1, 1884.

i Application filed June 6, 1883. (Model.)

To all whom it may miccia/1,.-

Be it known that I, EsrinrnroN HiroLIrro, acitizen of the United States, residing at the city of San J ose, in the county of Santa Clara and State of California, have invented a new and useful Improvement in Miter-Gages, of `which the following is a specification.

My invention relates to that class of mitergages in which there are movable guideways for the saw.

The object of my invention is to provide a simple and easily-adj ustable gage, by meansof which the saw may be accurately guided `to cut at any desirable angle. This object I accomplish by means of the device described herein and illustrated in the accompanying drawings, inwhich- Figure l2 is a view of the gage attached to its base, the posit-ion of the saw when in use being shown in dotted lines. Fig. l is a view of the lower part of the post I and standard A, showing the manner of attaching the gage to the base G. Fig. 2 is a front view of the gage attached to its base G, showing thewing which guides the saw opened to its widest extent. Fig. 3 is a plan view of Fig-2, showing also, in dotted lines, the wing E F swung around to 'hold the saw in` position to cut at an angle of forty/five degrees. Fig. et is a sectional view ofthe standard A, taken on 2. Fig. 5 is a sectional view of the standard A, 4taken on dotted line l 2, Fig. 6, showing the lower hinge, D, in outline. Fig. 6 is an obverse View of Fig. 2, showing the leaf F of the wing. Fig. 7 is a sectional view of the slotted post I on line 1 2, Fig. 6. Fig. `8 is a view of the slotted post I,

` with the hinges` G and D, set-screw L, and

. standard A, the letters E and` F referring to 1l is a section of the rod K on line 6, Fig. 9.

` the gage.

A is au upright standard for the support of In its lower end there is a 'longitudinal slot, marked aperture7 in the drawings, through which` abolt, N, passes to secure the standard to its base G. A spanner,

M, screws upon the end of the bolt, and by its friction upon the standard retains it at any height and in the position desired. This standard has a plain surface upon its front or inner side, to 4serve as a straight-edge to hold the timber straight while being cut. At the Atop and bottom of the standard A are mounted hinges C and D, `between which the post I is mounted upon arbors formed on its ends.

The post I is formed of two parts, which are i joined at the top and bottom to form solid bearings for the arbors, but are separated throughout their greater length by a slot, Z. There is a leaf, E, attached to that side of the post which/is next to the standard A, A leaf, F, is attached tothe other side of the post. These two leaves connect the rod K with the post I, and form the wing to guide the saw. The rod K is dit ided into longitudinal halves,

m.. The inner sides of the leavesE and F are fluslrwith the inner side of their respective` halves of the rod K and post I, so Ythatap'lain surface is presented for the saw through the passage-way between the plates or leaves. The leaves may be made of iron or other suitable material, and. of a singlepiece with their respect-ive halves of the rod K and post I; but if the post and rod be made of metal, as I believe will usually be found to be desirable, the inner sides should be lined with wood or some other suitable material which will not dull the teeth Aof the saw when they come in contact therewith.

The post I is prOVided'with a screw, L, by means of which its sides may be drawn together to reduce the width of the slot Z. The screw m serves a similar purpose upon the rod K.

A semicircular arm, B, is rigidly mounted upon the front side of the leaf E, and extends through a hole in the standard A, where it is secured by the set-screw S. This arm is marked' in degrees, so that the wing maybe set to guide the saw at any desired angle. The hole in the standard and the point upon the leaf where the arm B is mounted are at equal distances from the axis ofthe post I, so that as the wingis swung to and fro the arm will freely pass through the hole. The bottom ofthe rod Y K is nearly on a level with the top ofthe slot or which are held together at the top by ascrew, j

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grooves being formed in the rods for that pur- "Qpose, so that when the lining has been worn out it may be replaced. This lining may be of any suitable material which is tirm enough for the purpose, and will not dull the saw.

The base to which the gage is attached may be of any desired width, and has a bolt, N. rmly attached to it or passing through it, and projecting far enough from it to pass through the slot in the standard and receive the spanner M, by which the standard is secured. This base may be a strip of lumber, used simply as a support for the gage, or it may be the top ot the work-bench orany other suitable support.

There are gage-lines upon the inner face of the standard A. These lines are at different angles with the axis of the post I. Thelines r r r are at right angles therewith, so that when they are parallel with the top of the base the saw will cut perpendicularl y through the timber: Thelinesfp p p are at an angle of forty-five degrees with the axis, so that when they are parallel with the top ofthe base the saw will cut through thetimber atan angle of fortytive degrees. Lines at other angles may be added, if desired.

The following is a description ofthe manner in whichI use my gage: Having attached it to the base or bench G, I loosen the spanner M and raise orlower to the desired height. Ithen adjust it to the proper vertical angle by making the lines upon the standard indicating such angle coincide with the top of the base. I then tighten the Spanner to secure the standard in p1ace,and swingthe wingrounduntilthegraduation-mark upon the arm B,indicating the horizontal angle desired, coincides with the edge of the standard. The gage is now ready for use. I place the timber upon the base, and, pressing it firmly against the standard, so as hold it parallel therewith, I place the saw in the guideway formed by the space between the leaves E and F and the slots in the post and rod and proceed to cut the timber.

, The gage may be ot' different sizes and dimensions, to suit different grades of work.

By this simple means, it will be seen, I am enabled to accurately adjust thesaw to the angle, both horizontal and vertical, desired.

Now, having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The miter-gage consisting of a base, a vertical adjustable standard, a slotted rotating post, a guiding-wing havifng two leaves with a passageway between them, and a curved graduated arm, all in combination substanf tially as and for the purpose set forth.

2. In a miter-gage, a broad upright sawguide-supporting standard, adjustably mounted, substantially as shown, upon a base having a straight, flat upper surface, said standard being i'lat and plain upon the face or side next to the base, and having linear markings crossing said face at various. angles, and corresponding with the surface of the base at the line of contact as thestaudard is adjusted at different angles of inclination, all being substantially as shown and described, whereby the sawguiding apparat-ns may be accurately adjusted to guide the saw at various angles with the base.

3. In a miter gage, two longitudinallyslotted saw-guiding posts or rods connected by plates attached to the respective halves of the rods, substantially as shown, so that the inner faces ofthe plates form a passage for the saw continuous with the slots in the rods, each rod having its separate halves connected by a set-screw, substantially as shown, whereby the width of the passage through the slots in the rods and between the plates may be regulated.

4. In a initergage, slotted saw -guiding posts or rods having a separate lining of wood, substantially as set forth, whereby the lining may be replaced when worn out, and the saw will not be dulled by cont-act with the rod.

5. In a miter-gage, a saw-guide-supporting standard having a longitudinal slot therein, and being in combination with the base, bolt, and spanner, substantially as shown, whereby the guiding apparatus may be elevated and lowered, and may be given any vertical angle desired.

ESPIRIDION HIPOLI'IO.

Vitnesses:

I. WV. DooNER, NELsoN H. MURRAY.

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