US2761441A - Diamond tool - Google Patents

Description

J. LOECY, JR

Sept. 4, 1956 DIAMOND TOOL Filed Feb. 25, 1955 INVENTOR Jase/w A0503 Jje.

BY My MIA-M ATTORNEE nird a s The present invention is for an improved diamond tool for use in a machine for dressing grinding wheels and the like.

As is of course well-known, it is common practice in such a machine to turn the diamond-carrying member from time to time so as to present a fresh surface portion of the diamond to the wheel and thus prevent uneven wear of the diamond. In this way the useful life of the diamond may be prolonged.

In some prior devices it has been necessary to disrupt the position of the tool in order to effect such adjustment as is above referred to.

Whereas I have heretofore provided devices for automatically eflecting such adjustment, the present invention is intended for use in those situations where there is not suficient space for such automatic mechanism.

Therefore my present invention contemplates the provision of a simple and inexpensive and yet etfective means of manual adjustment of the diamond carrier insuch a tool without involving any change in the assembly and without requiring any additional parts; and this constitutes my present object.

A further object is to provide such a device in the form of a unit that may be conveniently assembled in the machine for operation thereby or removed therefrom with the same convenience.

Other objects will appear from the following description and claims when considered together with the accompanying drawing.

Fig. 1 illustrates my present unitary form of diamond tool and the simple manner in which it may be assembled in the machine, this view being partly in elevation and partly in section;

Fig. 2 is an extended view of the several parts of my present diamond tool prior to their assembly as a unit;

Fig. 3 is a view corresponding to line 3-3 of Fig. 1.

It is to be understood that the present form of disclosure is merely for the purpose of illustration and that there might be devised various modifications thereof without departing from the spirit of my invention as herein set forth and claimed.

Referring now to the accompanying drawing in detail, my present tool has the shank portion 1 that is adapted to be assembled in fixed position by means of set screw S within a holder that is indicated in a general way by reference letter H. The forward end of the shank 1 is formed with the outwardly extending annular flange 2 that is substantially normal to the longitudinal axis of the shank portion 1 and against which there is positioned the diamond-carrying member or slug 3 with its diamond 4. As one form of means for holding the member 3 in assembly, the ring or cap member 5 has an inwardly extending annular flange 6 at the rear end thereof in overlying or interlocking substantially parallel relation to the flange 2 and at the rear thereof; and the forward inner edge portion of the ring or cap 5 is crimped inwardly over the diamond-carrying member 3, as at 5a, so as to effect fixed engagement and positive securement therewith and hence unitary relation thereto. Between the overlying flanges 2 and 6 there is the tension ring 7 which provides sufficient friction for rotatable releasable engagement between the shank 1 and the combined ring 5 and slug 3. That is, the member tent O ?atented Sept. 4, 1956 3 and the ring 5 are to recognized as a unit which may be rotatably adjusted together with respect to the shank portion 1.

In the assembly of these parts, the flanged ring 5 may first be placed upon the shank member 1 from the rear end thereof, after which the slug 3 will be pressed within the ring or cap 5 which Will then have its end edge portion crimped into fixed engagement with the slug 3.

For the purpose of facilitating such rotatable adjustment, the outer surface of the ring or cap 5 is of polygonal form 8 that is adapted to receive a wrench for such manipulation.

Thus, whenever it is desired to turn the diamondcarrying member or slug 3, this may be accomplished by means of a wrench applied to the polygonal surface 8 and without involving any disruption of the shank of the tool and without requiring any other parts. This simple means makes possible a saving in the cost of manufacture and also a saving in time upon the part of the operator of the machine in effecting such ready adjustment, as compared with other devices.

What I claim is:

1. A diamond tool for dressing grinding wheels and the like, comprising a shank portion adapted to be fixedly mounted within a holder for operation thereby, a member carrying a diamond, said diamond-carrying member being positioned at the outer end of said shank portion, the forward end of said shank portion having an annular outwardly extending flange, an annular ring surrounding said diamond-carrying member and having an annular inwardly extending flange at the rear of and overlying the flange of said shank portion and having its forward portion crimped over inwardly into fixed holding engagement with said diamond-carrying member, tension means provided between said overlying flanges, and said annular ring having its outer surface provided with means of engagement for rotatable adjustment of said diamond-carrying member so as to present a fresh portion of the diamond surface to the wheel as may be desired.

2. Adiamond tool for dressing grinding wheels and the like, comprising a shank portion provided with means for receiving the inner end of a set screw for fixedly mounting the same within a holder for operation thereby, a member carrying a diamond, said member being positioned at the outer end of said shank portion, the forward end of said shank portion having an annular outwardly extending flange substantially normal to the longitudinal axis thereof, an annular ring surrounding said diamond-carrying member and having an annular inwardly extending flange at the rear of and overlying the flange of said shank portion and being parallel to and of substantially the same radial extent as the flange of said shank portion and having its forward portion crimped inwardly over into fixed engagement with said diamond-carrying member, tension means provided between said overlying flanges, and said annular ring having its outer surface provided with wrench-engaging means for rotatable adjustment of said diamond-carrying member so as to present a fresh portion of the diamond surface to the wheel as may be desired.

References Cited in the file of this patent UNITED STATES PATENTS 769,896 Gapp Sept. 13, 1904 818,682 Gibson Apr. 24, 1906 2,324,942 Meeson July 20, 1943 2,468,921 Bruce May 3, 1949 2,557,495 Bily June 19, 1951 2,587,132 Finke Feb. 26, 1952 2,588,733 Bruce Mar. 11, 1952,

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