US1026932A - Universal angle-plate. - Google Patents

Description

F. E. SEDDON. UNIVERSAL ANGLE PLATE. APPLIQATION FILED we. 11, 1911.

Patented May 21, 1912.

COLUMBIA PLANOGRAIII CU.,\VASHINOTON. n. c.

UNITED STATES PA TENT OFFICE.

FREDERICK E. SEDDON, 0F HOTBOKEN, NEW JERSEY, ASSIGNOR TO G-ARVIN MACHINE COMPANY, A CORPORATION OF NEW YORK.

UNIVERSAL ANGLE-PLATE.

To all whom it may concern:

Be it known that I, FREDERICK E. Snnnon, a citizen of the United States, and resident of Hoboken, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Universal Angle-Plates, of which the following is a specification.

This invention relates to an improved jig or fixture for milling machines, grinding machines and the like, employed for reboring automoblie cylinders, pump and steam engine cylinders, sleeves, collars and conplings of various sorts.

A large class of articles in mechanics, particularly automobile cylinders, are made with a bored portion, and a flange faced perpendicular to the bore and having bolt holes by which it is secured to another machine part. This general plan of structure is a common one on account of the ease with which it is bored and faced in one operation in a lathe, and with absolute precision. On account 01 this ease and precision of manipulation, bored parts having a perpendicular faced flange at one end with bolt holes, are common in all sorts of machinery. Now if it becomes necessary, by reason of wear, to rebore anv such automobile cylinder or machine part, it is evident that the flange is available as a guiding plane from which the bore may be carried in a perpendicular direction. The difliculty however is to get an adequate and adjustable holding means which will fix the plane of this flange in a sufiieiently accurate and positive manner in an ordinary milling or grindin machine, and be adapted for different kinds and sizes of mechanical bored and flanged parts on which repair may be required.

It is the purpose of my invention to provide a jig or fixture for milling and grinding machines which Will take work of any shape and size, within of course a reasonable limit of magnitude, and hold such work with absolute precision; in other words, with the plane'of the flanged portion perpendicular to the axis of the milling tool, and with as great firmness and rigidity as is requisite to prevent any yielding.

It is further an object of the invention to provide a device of great simplicity and eheapness and durability, and which may be used with convenience and rapidity on any standard milling or grinding machine.

Specification of Letters Patent.

Application filed August 11, 1911.

Patented May 21, 1912.

Serial No. 643,496.

With these objects in view, the invention consists in the improved jig or fixture as hereinafter more particularly set forth.

In the drawings,-I*igurc 1, is a plan View of a knee or universal angle plate embodying the principles of the invention; Fig. 2, is a front elevation; Fig. 3, is a similar view showing its use with a different piece of work.

The best constructions embodying the invention will include a knee, preferably in tegral or in one piece, and having a flat base adapted to fit on the table of the milling machine. From the flat base there will project upward two uprights to a vertical distance about as great as the length of the base, with a considerable separation or clear space between them as hereinafter described. These uprights are braced by integral webs connected to the base in such a manner as to be exceedingly rigid, particularly in use. In accordance with this construction the rigidity of the uprights may be made substantially as great at all points, as at points directly adjacent to the base. It will be appreciated that this rigidity is secured by the construction hereinafter described throughout as great a height as that just mentioned, and it will be further appreciated that no greater height than this in the uprights will be necessary on account of the principles of operation hereinafter stated. The drawings illustrate a knee having a base 1 and up rights 2, with integral webs3 extending from the rear of the uprights toward the base. I11 the best construction the webs will flare outward from one another behind the uprights and proceeding toward the base. The result of this construction is that the web of one upright acts as a positive brace for the web of the other upright when the knee is in use. In other words, each web and upright braces the other in the only direction where there is any possible weakness. The base 1 has openings 4 and 5 in the interest of lightness, and it is evident that the Webs 3 may be correspondingly provided with openings if desired.

6 denotes holes in the base through which T bolts may be passed to secure the base to the milling machine table.

Each of the uprights 2 is accurately faced at 7 in a plane perpendicular to the bottom face of the base 1, and each upright further has means, such as a vertical T slot 8, cut

' ished face 11 on one side.

centrally on its finished or front face 7 so as to receive a clamping device at various positions vertically on the upright. will also be provided four or more brackets 9 which have a slot or adjustment 1O extending longitudinally thereof, and a flat fin- These brackets will further have holes 12 near one extremity, these holes being also perpendicular to the fiat face 11 of the bracket.

13 denotes T bolts adapted to be received in the T slots 8 of the uprights 2 and passing through the slots 10 of the brackets 9. When these bolts are tightened the various faces 11 of the brackets will be rigidly held in exactly the same plane, and this plane will furthermore be the plane of the finished faces 7 of the uprights. The holes 12 of the brackets will be located anywhere within the open space between the uprights, their position depending merely on where the brackets happen to be clamped.

Assuming now that it is desired to rebore a part of a machine, such as an automobile engine cylinder, the cylinder is merely roughly blocked in place within the knee so that the cylinder base flange is roughly in the plane of the faces 7. The various brackets will now be fastened to the usual holes of the cylinder base flange by any convenient bolts. Thereupon the T bolts 13, which have been previously positioned in the brackets and in the T slots 8, will be firmly tightened, and by this act the finished faces of the various brackets and also the bottom face of the cylinder base flange will be brought with great accuracy into the plane of the upright faces 7. This accuracy is secured notwithstanding the considerable weight in the auto-mobile cylinder, and the rigidity is so great that any suitable steadying devices, such as screws 14, may be thereupon tightened without disturbing the accuracy of the first adjustment. In like manner the cylinder may be blocked up from below by any sultable wedge or screw. The larger the cylinder the shorter will be the projection of the brackets 9 beyond the uprights 2 and the greater the rigidity of their action, so that with cylinders of considerable size and weight, where the distorting strains are proportionately large, the rigidity will be proportionately intensified and rendered greater than the requirement for any occasion which may arise. It is further apparent that with cylinders cast en bloc, with three or four or six cylin ders in a unit casting, the same knee may be used and the brackets 9 merely employed with those holes of the cylinder base flange which are withintheir range of adjustment. This may allow a number of the cylinders to extend entirely above the knee, but these cyl- Gopies of this patent maybe obtained for five cents each, by addressing the Commissioner of Patents,

There rights, said brackets having perforations at their extremities, as and for the purposes set forth. I

2. A knee for holding flanged engine cylinders with their bores parallel to a given axis, comprising a frame formed with an opening, T slots extending among a plurality of sides of said opening, brackets having longitudinal slots and holes, bolts in said T and bracket slots, said brackets and frame being adapted to be clamped into en- 1 gagement in various positions of adjustment by means of said bolts, and additional bolts passed through the holes of said brackets to clamp the work thereto.

3. A knee for holding faced castings perpendicular to a given axis comprising base, uprights, webs extending rearwardly from the uprights toward the base and flaring outwardly from one another as they extend toward the base, and brackets, said brackets and uprights having finished plane surfaces and adapted to be clamped into engagement in various positions of adjustment in a plane perpendicular to the base, said brackets being clamped in engagement in every possible position within the plane of said faces and within a certain radius of movement. a

a. A knee for holding flanged engine cy inders with their bores parallel to a given f axis, comprising a broad flat bottomed base having rigid vertical frame bars with finished faces perpendicular to a given axis, and T slots extending along'a middle line of said faces, brackets having longitudinal slots and holes at their extremities and having finished faces, and T bolts, said brackets and frame bars being adapted to be clamped into engagement by said belts in various po sitions of adjustment with their finished faces in contact.

Signed at New York, in the county of New York, and State of New York this 8th day of August, A. D. 1911.

FREDERICK E; SEDDON.

Witnesses:

EDWARD J. MCCLELL N, FRANK A. POWER.

Washington, D. G.

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