Year: 1889

page_text: A communication from abroad by JÁN VRÁTIL, of Doudleb, Bohemia, Empire of
Germany, Receiver of the k. k. Finance Department.
I, WILLIAM PHILLIPS THOMPSON, F.C.S. M.I.M.E. of the Agency for Foreign
Patent Solicitors 6, Lord Street, Liverpool, & 6, Bank Street Manchester both in
the County of Lancaster & 323 High Holborn in the County of Middlesex, Civil
Engineer 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 :-
The object of this invention is a machine by which various articles can be sliced,
as is necessary in culinary operations, such as dumplings and other articles of dough,
sections and slices of fruit, vegetables, roots, etcetera; these, the machine cuts auto-
matically into pieces of equal thickness.
The machine is shown in the accompanying drawings.
Figure 1 is a side elevation.
Figure 2 a view from beneath.
Figure 3 a view from above.
Figure 4 a longitudinal section.
The remaining Figures will be hereinafter described.
The article to be sliced is placed on the cutting board B beneath the knife M, and
through the raising and lowering of the knife at the same time as the sliding, the
board B and the article lying thereon are automatically moved forwards from behind
in the direction of the arrow 1, Figure 3.
The oscillating lever H, fastened by a pivot z in a hollow standard S. holds the
removable knife M, (the blade of which may have any desired form, according to the
shape that is required for the surface of the articles to be sliced), and the knife holder
is moved up and down by the handle, (oscillating on the pivot z). The amount of lift of
the knife holder is regulated by the adjustable screws, fixed in the forked

page_text: standard St, against the point of which screw, when the knife holder is raised, the
short lever arm h' strikes. The further the screw s¹is screwed in, the smaller becomes
the lifting space of the knife holder H.
The article to be sliced lies on the board B, beneath the knife M. The plate is
held firm between two pins a a, which also serve as guides, and a rod v for pushing
it forward provided with projecting points in front. These pins a a can be pushed
into two slots in the bottom plate G, in the direction shown by arrow 2, by
means of handle g, which can also be pressed into the slot σ. The pins a a are
pushed back in the direction of arrow 2 by means of the handle g, in order to insert
the board B easily on releasing the handle g, the pins a a spring against the plate B
by the pressure of a spiral spring f, and the plate is then pressed (or clipped) on
one side by these pins and on the other by the propelling rod v.
';
:
The pins a a and handle g are, in fact, firmly connected by a triangular framed,
lying under the bottom plate G, through the downward bent part of which frame
there runs a spindle o, placed between the hangers m and n and provided with a spiral
spring if the handle g is drawn to the right, the triangle d and the pins a a are
pushed in the same direction, the spring fis compressed, and the board B can then
be easily withdrawn ; on the release of the handle g, the spiral spring f again expands,
and the pins a a spring back again.
It is necessary now to give the board B an even forward motion from behind
in the direction of arrow 1, which is done by means of the propelling rod v, the
projecting points of which press into the board B.
On the pivot in the hollow standard S, is hung a cross arm lever K which
moves with it. and of which the long arm k, enters direct into the actual propelling
mechanism; the cross arm lever is, in fact, by the raising and lowering of the knife
holder, moved backwards and forwards like a pendulum; as the screws 8, & fixed
in the knife holder, press down alternately the arins k₁, k₁ of the cross lever; if the
screw 81 strike on the arm ka, it turns the arm k, to the left, and if the screw s, strike
on arm, it turns arm k, to the right.
The propelling apparatus consists of an arm p situated under the bottom plate G,
provided with a longitudinal slot o₁ and with an elbow lever c c₁, moving on the
pivot w. The arm p is connected with a slide P, which contains the propeller v
and the parts p. P and v are held together by the screws ẞ; on the other side, the
lever c is fastened by a screw to the slide P, so that if any one of these parts be
moved, all the others make a relative movement with it. The lever arm c₁ is also
provided with a groovey in which rests the lower end of the long arm k₁ of the
cross lever, passing through the opening o₁ in the arm p; further, a spiral spring f1,
coiled on the spindle r, the force of which spring can be regulated by a screw
matrix μ, presses the slide P constantly against the side W of the standard S, and
the propellor stands in a groove b of the side wall W.
In order to clearly explain the mode of working of the propelling apparatus,
the positions shown in Figures 1 and 2 of the annexed drawing will be taken as a
starting point.
In this position, the propellor emerges from the opening 6 in the side W of the
case, and its points penetrate the board B. Now if the lever H is raised, the
part h₁ sinks until it presses on the set screws; at the same time the set screw s
descends upon the cross arm k₁, the cross lever moves on pivot to the right and
the cross arın k, pushes, the lever arm c₁ forward to the right in the direction of
arrow 3, whereby a movement of the elbow lever c c₁ on its pivot, takes place, pushing
forward the slide P, and with it, the propellor in the direction of arrow 4, (see
Figure 5, view from below, and Figure 4).
By this forward movement, the propellor pushes the plate B forward, and with
it the article to be sliced, resting thereon; on the lowering of the knife, the set
screws, presses on the arm k, of the cross lever K, the cross lever swings to the
left and the arm K, carries then with it, the arm p (as well as the parts P and v)
and the propellor rod releases the plate (see Figure 6, view from below). When the
knife is again raised, the apparatus returns to positions shown in Figure 2 and

page_text: Figure 5, when lowered, to that shown in Figure 6, and the process is repeated
continually by the raising and lowering of the knife; so, by each raising of the knife,
the plate B is pushed forward a space equal to the forward movement of the propellor o
in the slot b, from the position in Figure 2 to that in Figure 5.
If the board B is too long, owing to the articles laid thereon for slicing, it may
be supported on guide rollers E, (Figures 1 and 3), which are fixed on both sides
of the machine by rods Q which, if not required to be used, being movable on the
pivot n, may be folded up by the side of the machine.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is :-
+
1. A slicing or chopping machine especially applicable for kitchen use, composed
essentially of a knife M fastened to a reciprocating double lever (HA), and a board B
below the knife, on which lie the articles to be sliced, and which, through the raising
and lowering of the knife, automatically receives a forward movement, by means
of a suitable propelling apparatus, substantially as described and for the purposes
set forth.
名
2. In a slicing or chopping machine such as described, the propelling apparatus
for producing the forward movement of the board B from behind, consisting of a
cross lever K suspended in the hollow standard S, on the pivot of the double
lever Hh, and moved backwards and forwards like a pendulum, by the rising and
sinking of the lever and the alternate strokes of the set screws s, s, thereon upon
the cross arms k₁, k,, of the cross lever K, such backward and forward movement
causing the rod p, (by means of the cross arm k, which projects through a slot o¹
in the said rod), to share in the motion of the said cross lever, so that the
propelling rod (connected with the rod p) is also moved, whilst it also receives
an impulse from the elbow lever cc₁, which is adapted to push forward the slide P
and the rod connected thereto, and to thereby advance the board B clutched by the
rod, substantially as described.
3. In a slicing or chopping machine such as described, the arrangement of
adjustable spring guides a a, and the guide rollers E fastened to movable rods Q,
whereby the board B is kept in a straight course, substantially as described.
Dated this 13th day of April 1889.
WM. P. THOMPSON & Co.,
Agents for the Applicant.