DE194647C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING.

CLASS όβδ. GROUP

in ROTTERDAM.

Addendum to patent 169608 from June 20, 1905.

Patented in the German Empire on June 27, 1907. Longest duration: June 19, 1920.

The invention relates to a further embodiment of the grinding device for sharpening of the rotating Kfeis knife of slicing machines and the like according to patent 169608. This apparatus has a single grinding wheel provided, which by means of special devices intended for this purpose against both the front and the back of the circular knife to be sharpened

can be pressed. ■

According to the present invention, two special grinding wheels are used instead, one for each side of the knife, which eliminates the cumbersome repositioning of the device, depending on one or the other Side of the knife to be sharpened is avoided.

The grinding wheel for the outer or rear side of the knife is preferably made of one rough emery or similar stone, while the grinding wheel for the front or inner side of the knife made of very fine-grain stone, steel or the like and preferably given a somewhat oval shape. In general, the inner needs Side of the knife not to be sharpened as often as the back.

The grinding devices are provided with elastic means, e.g. B. springs or the like, provided, which the disks are in constant contact with the one to be ground. Hold the knife edge.

The grinding device itself is arranged and displaceable on a vertical pin is, under the action of a helical spring, external contact with the knife and by means of an adjusting device, similar to that according to the above-mentioned patent specification 169608, held in working position.

The subject of the invention is shown in various embodiments in the drawing shown.

Fig. Ι is a side view of the new grinding device.

Fig. 2 is a top view of the same with two grinding wheels provided.

Fig. 3 is a top view of a somewhat modified embodiment of the device, a disk for sharpening the back of the knife and a disk for sharpening the front A steel grinder is provided on the side of the knife. ■ "·

Fig. 4 shows a thin steel disc used for grinding the inner edge of the knife serves. ■

■ Stock copy

Fig. 5 is a side view of a somewhat modified embodiment of the grinding device for the inner edge of the knife.

The base plate α of the device is provided with three vertical pins b, c and d , of which the pin b is arranged in the vicinity of the rotating circular knife e and serves to hold the frame for the grinding device. Carry pegs c and d

ίο the lifting and locking device. The GE-, stell for the grinding device consists of

. a sleeve / which is provided with three arms g, h and i , of which the arm g has a forked end g ¹ which comprises the pin d. The shafts j and k are mounted in the arms h and i by means of ball bearings or the like. The two grinding wheels / and m are attached to the shafts /, k. The entire device is held in the raised position out of engagement with the knife to be sharpened by means of the helical spring η which is wound around the pin b , while by means of the locking device 0, which is designed in the manner of the device described in patent specification 169608, the Grinding device can be determined in the working position. The only difference between the locking device according to the present invention and that according to the aforementioned patent specification 169608 is that in the present embodiment only one locking device is required, so that the Gesteh ^{1 is} only provided with a hanging tongue o ¹ , as well as only one end of the bolt o ² needs to protrude for the purpose of engagement in the tongue o ^1. When the grinding device is pressed down into the working position, the disk m is adjusted by means of the device f

. shifted on their shaft k , as described in patent specification 169608.

The disk m, which usually consists of fine-grained rock, is pressed against the front of the knife by means of the spring u arranged on the shaft k , while the disk I, which is usually made of rough material, is pressed against the back of the knife the spring υ is pressed.

Instead of a grinding wheel m , a steel wheel t, as shown in FIG. 4, can be used.

In the embodiment according to FIGS. 3 and 5, the sleeve of the grinding device is provided with two arms q and r, the arm q, as in the embodiment explained above, carrying a bearing for the shaft j ¹ for the stone I ¹ , while the arm r on the upper side carries a flat bar or bar r ¹ which is provided with slots into which locking pins r ² protrude. The bar r ¹ is adjustable on the arm r; The inner end of the rod r ¹ is provided with a downwardly directed projection r ³ , which at its end ^{carries a pin r 4} (Fig. 5). A similar pin r * is attached to the side of the arm r , with between the a spring r ^{5 is} arranged on both pins r ⁴ , by means of which the rod r ^{1 is} usually pulled inwards. The outer end of the rod is equipped with a sleeve r ⁶ , in which the leg s of a grinding steel s ¹ can be fixed by means of the adjusting screw s ^2. The grinding steel s ^{1 is} pressed against the edge of the knife by the spring r ^5.

Claims (2)

Pat ent-An Proverbs: 1. Grinding device for sharpening the rotating circular knife of slicers and the like Patent 169608, characterized in that for simultaneous Sharpening the outer as well as the inner side of the knife two special grinding wheels are arranged. 2. Embodiment of the device according to claim 1, characterized in that that the two devices for sharpening the outer as well as the inner side of the knife from rotating discs . stand. , 3. embodiment of the device according to claim 1, characterized in that for sharpening the inner side of the knife: an adjustable steel block (s ¹ ) is used. Supplementary sheet to patent specification 194647, class 666. By final decision of the Imperial Patent Office on June 13, 1912 Claims 1 and 2 are declared null and void.