An Improved Grinding or Sharpening Apparatus.
Year: 1894

page_text: Date of Application, 14th Mar., 1894--Accept d. 19th May, 1894
COMPLETE SPECIFICATION.
An Improved Grinding or Sharpening Apparatus.
I, GOTTFRIED BRAUN, Gentleman, of Adalbertsteinweg, Aix-la-Chapelle,
Germany, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement :-
My invention relates to a machine having for purpose, to whet razors; therefore
it is organized in such a manner, that a particular mechanism in it moves the
razor in horizontal direction passing over the roller to and fro, while this is whetting,
thus enabling it to symmetrically whet every part of the knife.
The machine, shown by the sketch 1, may be set in action with the handle K
attached to the fly-wheel S. The motion thus immediately communicated to the
axis A first of all will be transmitted by means of the toothed gears Z1 Za to the
axis B, viz. the degree of rapidity the whetting roller attached to the axis B will
agree with the proportions of the aforesaid two gears. This axis B however does
not fully extend from the one end to the other; but the roller W at both its sides is
garnished with spindles band, the former of which catches in a flute of the upper
gudgeon H attached to B, in such a manner however that the roller will be driven
along with the rotating upper gudgeon H, it may be by means of a square axis or
a transversal pin or in any other wise. The extremity of the other spindle b, has
a conical hollow fit to keep the point of the thumb-screw u.
This arrangement will enable to substitute another roller, which for instance will
be wanted for grinding notches of a knife-edge. For this purpose the place of the
whetting roller, made out of the same matter as the ordinary grindstones, is to be
filled by another one made in fit sandstone.
Moreover the axis A by means of the conic gears Z, Z, will set in rotation the
vertical axis C (to be seen in Figs. 1 and 2). The extremity of this axis bears a
horizontal crank D furnished at its exterior extremity with a little pin d, this latter
being guided to and fro in horizontal position along the slot-hole E (as shown by
Fig. 2). This same motion will be transmitted, by means of a fork-link G, fixed
to the slot E and catching with the vertical prong V in the upper furrow / of the
guide-piece F which is attached to the axis J, so that this piece F be moved to and
fro along the axis J.
The guide-piece F, presented in a lateral prospect by sketch 3 has for purpose
to keep the knife, pinched with the thumb-screw f1 between the loose cheek ₁ and
the fixed cheek .
The axis J has been constructed as follows: In the vertical furrow N of the
high frame P there is a sliding block n, vertically movable and arranged to be fixed
with a thumb-screw f,. This sliding block is at the upper side fast connected
with the round bar L, at the inferior side with the little block K, a fit pillow to the
spring R. This organization enables to advance the axis J more or less near to
the roller W.
The round bar L is superposed with the tube M loose and movable, which has
all along itself a horizontal groove N, to keep a guide pin. This tube is garnished,
at its extremity turned to the frame P, with a disk s (Figs. 1 and 4) flattened on
three sides and for the rest being fully circular, on which from below the spring R
is acting to fix the tube M along with the guide-piece F and consequently the razor
in the required position to press it toward the rotating roller.
In order to fasten the knife in the machine, the guide-piece F must be placed in
the direction shown in the annexed drawing. In order to whet the one side of the
blade, the guide-piece may be turned around its horizontal axis along with the

page_text: knife, until the knife comes in contact with the roller W and then the roller may
be turned in such a manner, that it always runs against the face of the knife.
Thereafter to whet the other face of the blade too, the guide-piece along with
the razor is to be turned in its principally upward position towards the backside
of the roller, now however rotating it in the direction opposite to that of afore.
Naturally the roller must always be wet.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is.
1. The combination, in an improved grinding or sharpening apparatus, of a
rotatory whetting roller W that may be taken out, with a guide-piece F, carrying
the razor, that may be horizontally driven to and fro along the rotating roller W,
all substantially as set forth.
2. In an improved grinding or sharpening apparatus converting the rotatory
motion into a horizontal to- and fro-moving which by means of a slot-hole E and
fork-link G moves the knife to and fro over the roller, substantially as described.
3. In an improved grinding or sharpening apparatus the combination of a
vertically movable round bar L of the axis J in the vertical groove N with the
superposed tube M furnished with the disk s on which the spring R is acting, all
substantially as described.
Dated this Tenth of March 1894.
JOSEPH MOHLIG,
Agent for Applicant.