US1449513A - Turning and planing tool - Google Patents

Description

Mar. 27, 1923;

P 1,449,513 C. JAEGER TURNING AND PLANING TOOL and July 19, 1920 Mina-80.9: inventor.- j Carl J" Eliot-neg;-

Patented Mar. 2?, 1923.

tlhillTiE ST cant JAEGER, or wnrnnor, NEAR MANNHEIM, GERMANY.

TURNING AND PLANING TOOL.

Application filed July 19, 1920. Serial No. 397,545.

(GRANTED UNDER THE PROVISIONS OF THE ACT OF MARCH 3, 1921, 41 STAT. L, 1313.)

To all whom it may concern:

Be it known that l, CARL JAEGER, director, a citizen of the German Republic, and residing at Waldhof, near Mannheim, Ba-

5 den, Germany, have invented certain new and useful Improvements in Turning and Planing Tools (for which I have filed applications in Germany, Sept. 1, 1916; in

Austria, December 28, 1917 in Hungary, January 16, 1918; in Switzerland, April 5,

1919; in Sweden, April 9, 1919; in Denmark, May 17, 1919; in Norway, May 27, 1919; in Holland, July 29, 1919; and Czechoslovakia, October 25, 1919), of which the following is, a specification.

Turning and planing tools the central axis of which is arranged under an acute angle a with reference to the surface 6 to be worked upon, as shown by Figure 1, and in which only one cutting edge can be made use of at a time, are well known in the art.

Turning and planing tools the front end, or better the frontal surface of which is provided with several cutting edges which when used up must always be worked up again, are equally known in the art. Neither are new such tools which are provided with a surface running all along the tool and having the most suitable inclination for turning purposes. The ends of these tools however must be ground in a special way.

Now the object of this invention, is to provide a tool possessing novel features compared with the well known tools. In the accompanying drawings given by way of example- Fig. 1 shows a diagrammatical top plan view of an ordinary turning tool.

Fig. 2 shows a perspective view of the improved tool.

Fig. 3 shows a view similar to Fig. 1.

The tool according to this invention has a cross section which is obtained by arranging the clearance angle 0 and the cutting an le 45 in such a way, that they succeed eac other all around the cross section. The fundamental shape of the tool is therefore a prismatical shaft which may be rolled, drawn or worked and which has at each corneiof its cross-section a cutting edge running all along the length of the tool. It will be readily understood that the angles 0 and d may be varied according to requirements. come zero without the cutting angle d being altered for a given material. case the tool is simply supported in a suitable manner in the tool carrier so as to obtain the required adjusting angle.

In order to save weight or for the purpose of cooling or the like the centre of the tool may be hollow.

Fig. 3 of the drawing shows how the improved tool is used. It is positioned in such a'manner with reference to the piece of work, that its axis is turned towards the left until the obtuse angle 6 is obtained so that its cutting edge acts exactly as that of the well known tool Fig. 1. The position of the ordinary tool shown by Fig. 1

has been repeated in dotted lines in Fig. 8.

My improved tool combines in one tool several times all the advantages of any other well known type of turning tool; it may be used up without altering in any way its shape until'only a short piece is left. It is by no means necessary to work up again and again at short intervals the frontal face of the tool. Compared with a tool having only one cutting edge running along its length, the improved tool has the great ad- The clearance angle 0 can also bei In this.

vantage to secure a great saving of expensive steel and to enable the tool to be sharpened again by simply grinding the end face at right angles with reference to the axis of the tool. Thus for instance a tool having four cutting edges running along its length and showing at one end four right and at the other end four left cutting edges, replaces eight ordinary turnlng or planing tools each of which should have a and owing to the fact that the heat cannot be removed with sufiicient rapidity. When however four such tools are united as in the tool according to this invention the heaviest turning Work can be performed Without difficulty.

Having thus particularly described the 5 nature of my invention What I claim as new and desire to secure by Letters Patent of the United States is:

In a turning and planing tool the combination with a prismatic shaft having a longitudinal groove provided in each side of 10 the shaft and arranged, in; suqh a ay that the clearainceanfd cutting angles aI folmed ateach edge of the shaft, substantially as and forthepurpqseset jort h In testimony whereof I afli'X my signature. 15

CARL J AEGER.

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