US620641A - Gustay clemens - Google Patents

Description

Patented Mar. 7, |899.

G. CLEMENS. Y MI'TER SAWING APPARATUS.

(Application led Jan. 20, 1898,)

No. 620,64l.

(No Model.)

UNITED STATES PATENT OFFICE.

GUSTAV CLEMENS, OF ARMEN, GERMANY.

MlTl-:R-sAwlNG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 620,641, dated March 7, 1899.

Application filed January 20, 1898. Serial No. 667,373. (No model.)

To all whom, it 71u03/ concern:

Be it known that I, GUSTAV CLEMENS, a subject of the Emperor of Germany, residing at Barmen, in the Province of Rhenish Prussia, Germany, have invented certain new and useful Improvements in Miter-sawing Apparatus, of which the following,r is a full, clear, and exact specification, such as will enable others skilled in the art of this manufacture to make and use the same.

This invention relates to improvements in miter sawing and cutting apparatus which are novel in the following particulars: The board has an adjustable rule in horizontal direction and an adjustable die to fasten the work. The rule is provided with an exchangeable scale for cutting the work on the desired length. The saw is so guided that it can be moved only in vertical direction, the guider being arranged for saws or knives of different breadth.

These improvements are represented in Figures l to 6 of the accompanying drawings.

Fig. l is a plan showing the complete apparatus.A Fig. 2 is a front elevation of the same; Fig. 3, a view seen from left side of Fig. 2; Fig. 4:, a vertical section of the guidestandard; Fig. 5, a horizontal section of the same, and Fig. 6 a longitudinal view at right angle to Fig. 4:.

Like letters of reference designate corresponding parts in the drawings.

In said drawings,a indicates a plate of pref! erably cast-iron having a smooth-planed level and being provided with feet b.

c is a rule serving as support for the work. It is linked to the plate a by means of a bolt, the fulcrum of which lies, preferably, out of the middle in the left part of the machine and as near as possible atl the plane in which the saw is moved. The rule c is adjustable on an arch d, which is graduated for a number of angles, and it has also a number of apertures e, which engage a pin f, that is closely held therein by a lever g, fitted to the rule and being inuenced by a coil-spring h. When the lever g is disengaged of the pin f, the same slips out of its aperture, which is done by means of a spring Zt laid around said pin. From this it will be understood that the rule can be easily placed in any angle to get the desired level for the work. If a small angle is required which is not shown in the scale and a corresponding aperture is not provided for, the rule may be held in the desired miter by a set-screw Z, tted to the rule.

Now I have made some provision to secure the work in position during the sawing or cutting process. The plate ais for this purpose provided with a slot m, into which fits a screw form, is placed turnable over the screw, so that it can be moved parallel to the rule b, and allows the work to be fastened between the rule and die and be closely held fast, for which operation has been hitherto used the hand of the workman.

Now to cut or saw the pieces on exactly the desired length I have arranged a rod p, which is screwed to the rule and provided with a scale. On the rod p is mounted a slide q, having a border q', against which lies the end of the work. The slide can be adjusted at will and xed on its rod by a set-screw r.

The tool, which may be eitherasaw of any form, with or without frame, or a knife, is exactly guided in a right angle to the radius of the graduated arch, which is effected by the standards s being constructed as illus trated in Figs. 4 to 6. This standard consists of a -tubular piece s, having a flange by which it may be xed to the plate a. It serves as guide for a tube t, which, like its guide, is provided with slots u. The tube t is tted with two vertical rollers w, being arranged one beside another, which are journaled between screws y and are fitted with a number of collars 5s, corresponding in height with each other. Between said collars the blade of the saw is guided, and as the rollers w are turnable no friction is produced and the saw or knife may be very easily moved. The tube if follows then the saw in vertical direction, as the latter is provided with a U-shaped band lo', that surrounds the top level of the saw or knife and fits between the rollers, so that when the saw is lifted the collars cause also a lifting of the tube t, and vice versa. The

saw must extend a little over the bottom of the tube t in order to cut the piece through, and then no lining of wood, dac., is required inthe plate. The tube-bottom resting upon said plate limits the downstroke of the saw, which in the lowest position enters a groove n. A die o, of angle-iron or other .suitable IOO z in plate a. If a smaller saw is used, collars of different height are provided, which may be engaged by the saw or knife, as shown in dotted lines, Fig. 6.

I am aware that sawing apparatus of named kind have .been made before Iny invention, and I therefore do not claim such an apparatus broadly; but

What I do claim, and desire to secure by Letters Patent, is- Y A standard for guiding the saw or knife consisting of a tube or like piece having vertically guided in it a tubular lining as t, said lining being provided with Vertical rollers as w that are fitted with collars arranged in dif- I 5 In testimony whereof I have signed my 2o naine at the end of this specification in the presence of two subscribing witnesses.

GUSTAV CLEMENS. Witnesses:

'R. E. JAHN, OTTO KNIG.

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