A Combined Improved Mechanical Grater and Squeezer for Lemons or other similar Fruit.
Year: 1889

page_text: Date of Application, 9th Nov., 1889
Complete Specification Left. 9th Aug., 1890-Accepted, 13th Sept., 1890
PROVISIONAL SPECIFICATION.
A Combined Improved Mechanical Grater and Squeezer for Lemons
or other similar Fruit.
1, THOMAS WILLIAM STONE, of 189, Goldhawk Road, in the City of London
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to an improved mechanical grater operated by hand, for
grating the peel of a lemon or other similar fruit and further for squeezing the
Temon in order to abstract the juice from the same.
My improved apparatus consists of a combined apparatus for effecting the
hereinbefore mentional purposes.
screw
Upon one end of a spindle I may arrange a hand lover and a suitable knob, or
handle for the purpose of turning the said spindle. This spindle has a
thread cut upon it from end to end and passes through a screw socket or nut
situated at the end of a case, or box.
Upon the opposite end of the spindle to which the band lever is attached a
point surrounded by a sharp helical thread, similar to the point of a gimlet, or
wood screw is arranged, a suitable collar being provided upon the end of the
spindle situated within the box, or case, to prevent the spindle being screwed out
of the socket.
Upon the sides of the box, I arrange a series of spring lips, the ends of which,
nearest the spindle, being fastened to the sides of the box in any convenient
manner, and the opposite ends of which are bent inwards towards the centre and
have mounted upon them suitable graters presenting preferably a convex serrated
face.
These convex graters have arranged upon them a series of winged shape
projections, with their inner faces serrate 1, and of such a form as to grasp tightly
the end of the lemon. The action of the apparatus is as follows.
A lemon is inserted into the box through an aperture in the side of the same,
the nose of the lemon resting against the graters suspended on the spring lips, the
handle is then turned in such a direction as to feed the spindle into the case owing
to the screw thread cut upon it which engages in the screw socket.
Upon the screwed point on the end of the spindle touching the lemon, it will
enter the lemon until the shoulder on the screwed point comes into contact with
the end of the lemon, when the lemon itself will begin to turn and its surface
will be grated by passing over the serrated surface of the grater, as the spindle is fed.
for ward by its own screw thread it forces the lemon forward, and opens the spring
lips carrying the graters, until the whole of the lemnon has passed the graters
when the spring graters begin to close together again, grasping the lemon on the
other end,
The lemon has now its peel entirely grated off, and by turning the handle in
the opposite direction the screwed point disengages itself from the end of the lemon,
upon which the lemon falls from the spring lips into a suitable receptacle.
I may arrange a suitable knife hinged in any convenient manner and position in
order to cut the point of the lemon when ready for squeezing before it enters the
squeezer.
I arrange my squeezer at the end of the grating chamber in such a manner that
as the lemon is delivered from the grater it will fall into a chamber of my improved
squeezer which is constructed as follows:-
One size of the squeezing chamber is composed of a movable partition, to each
side of which is fitted a toothed rack running to the rear of the face of the squeezing
plate towards the lemon.

page_text: I arrange two spindles which are mounted upon the top and bottoin of the box
in any suitable manner, and the plane of which lies at right angles to that of the
racks, and upon each of these spindles a cog-wheel is fitted.
These wheels gear together in the centre, and gear with their respective racks
on each side.
Upon one of the spindles a suitable hand lever with a knob, or handle is attached.
Upon turning the handle in one direction the wheels will be operated and their
turning will communicate the motion to the racks forcing the movable partition
forward and squeezing the lemon against the fixed end of the box or chamber.
The juice from the said lemons dropping down, passes through a suitable grating
and can be caught in any convenient receptacle.
Dated this 9th day of November 1889.
FELL
WILDING,
1, Queen Victoria Street, Agents for the Applicant.
COMPLETE SPECIFICATION.
A Combined Improved Mechanical Grater and Squeezer for Lemons
or other similar Fruit.
I, THOMAS WILLIAM STONE, of 189 Goldhawk Road, in the City of London,
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 :-
And in
My invention relates to an improved mechanical grater operated by hand for
grating the peel of a lemon or other similar fruit and further for squeezing the lemon
in order to abstract the juice from the same. My improved apparatus consists of
a combined apparatus for effecting the hercinbefore mentioned purposos.
order that my invention may be the better understood I now proceed to describe the
same in relation to the drawings hereunto annexed, reference being had to the letters
and figures marked thereon.
Figure 1 is a sectional view of my apparatus with the lemon placed therein ready
for grating the surface.
Figure 2 is a plan of the same.
Figure 3 is an end view of the machine showing the grater turned back against
the rest.
Figure 4 is a sectional view showing the lemon in position for squeezing.
Figure 5 is a view of a modified grater for peeling
Upon one end of a spindle AI arrange a hand levor B having a suitable nob or
bandle C for the purpose of turning the spindle A.
This spindle has a screw thread D cut upon it from end to end which passes through
a screw socket or nut E situated upon the end of a sliding frame F which moves
longitudinally between suitable guides G.
Upon the opposite end of the spindle A to which the hand lever B is attached I
arrange a gripping device H by which the lemon is rotated upon the rotation of
the spindle A by the handle C'.
This device H may take the form of a point surrounded by sharp helical threads
similar to the point of a gimlet or wood screw having a suitable collar against
which the end of the lemon engages, or the gripping device may be formed as shown
in the drawing at H consisting of a cup shaped piece attached to the end of the
spindle having a series of sharp projections which are forced into the stalk end of
the lemon and serve to drive it.
Upon the opposite end of the casing I arrange a spring pressed centre or point J
or other similar device upon which the other end of the lemon is supported.
Upon the upper part of the machine a support K of a flexible nature preferably
consisting of wire for carrying the grater plates L is hinged to the movable
frame
$

page_text: This grater plate Lis hinged to the support K at k and is of such a form that as
the lemon is revolved and the grater noves from the left to the right the whole
surface of the lemon is touched at one time or other by the grating surface.
Upon the end of the support K a weight M is provided in order to effect auto-
matically a sufficient pressure of the grating surface upon the lemon.
Upon the end of the movable frame a squeezing or feed plate N is carried
which may be further supported at its lower end by means of a stay a from the
nut Ę.
The grating surface of the grater may be of the form generally used for the
ordinary kitchen graters or of such a form as illustrated in Figure 5 which shows a
grater having a series of edges forced up presenting semicircular cutting edges; this
kind of grater may be used for peeling.
The attachment and removal of the grater and its support from the machine is
effected by gripping the sides of the support K and pressing inwards so springing the
hooked ends of the support K from engagement with their holes in the frame F.
A flap or cover O preferably hinged and consisting of enamelled metal or
earthenware faced is arranged on the top of the machine.
The object of this is that when the surface of the lemon has been grated the
resulting gratings become clogged between the serrations of the grater. These
gratings can be removed from the grater by turning the grating surface upside down
and brushing the gratings on to the flap or plate 1. by means of a brush.
A knife blade P preferably hinged upon the side of the frame is provided in order
to trim off the nose of the lemon before its insertion into the machine.
Upon the lower part of the squeezing box R a sliding grating is arranged and
beneath this sliding grating any suitable dish or pan S is placed in order to receive
the juice squeezed from the lemon.
A small spiked fork or hook T is provided and conveniently hung upon the spring
pressed centre J. This spiked fork or hook is used for withdrawing the lemon
from its engagement with the gripping teeth h after the surface has been grated
and the lemon is ready to be squeezed thus entirely obviating the necessity of
handling the lemon.
I arrange a support U upon the sliding frame F against which the grating attach-
ment may rest when the lemon is being squeezed.
The operation of my apparatus is as follows:-The machine being placed in the
position as shown in Figure 1, the lemon is placed so that the cutting teeth or pro-
jections are forced into the stalk end of the lemon, the nose of the lemon having
been previously removed by cutting with the hinge knife P.
The spring pressed centre J is then drawn back to permit of the point being in-
serted into the nose end of the lemon.
surface lies in contact with the surface of the lemon the pressure required for grating
The grater is then hinged over until its
being effected by the weight M.
By revolving the spindle A by means of the handle C the lemon is revolved
herewith, the driving effect being obtained through the sharp projections h. During
uch rotation the thread D thereon, engaging in the nut actuates the frame F
arrying the grater from left to right, see Figure 1, until the whole of the surface of
he lemon has been grated. Should once across not be sufficient the action can be
epoated by an alternate reversal of the direction of rotation of the spindle A.
When the feed or squeezing plate N is in the extreme right hand position, as
hown in Figure 4, the grating surface L is hinged back upon the support U
nd the lemon gratings upon the same can be removed onto the flap or cover O
y means of a brush.
The spring pressed centre J is then pulled back until the point becomes dis-
gaged from the end of the lemon. The lemon can then be disengaged from the
riving projections h by means of the hooked tool T and will fall upon the grating r
the bottom of the squeezing box R.
Upon again rotating the spindle Å in a proper direction the feed plate N is

page_text: moved from right to left squeezing the lemon, the resulting juice falling into any
convenient receptacle S.
The remains of the lemon can be easily removed by opening the sliding
grating r.
It is obvious that pressure may be applied to the grater surface in any equi-
valent manner to that described by means of hand or spring pressure.
1 provide a second tray or receptaclo fitting into the tray for the juice so as to
catch any gratings of the peol that may fall from above. This second tray can be
removed before the squeezing operation is effected.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1st. The general construction, arrangement and combination of parts of a
mechanical grator and squeezer for lemons or other similar fruit, substantially as
described.
2nd. A mechanical grater in which the lemon or other fruit is supported upon
and revolved by a spindle, the rotation of the said spindle simultaneously actuating
a hinged grating surface in a direction parallel to the axis of the said spindle, the
grater surface being pressed upon the skin of the fruit by weight, hand or spring
pressure.
3rd. In combination with such a grater a feed or squeezing plate attached to the
moveable grating surface frame so as to squeeze tho lomon or other fruit between
it and the end of the chamber in which it is situated, substantially as described.
Dated this 9th day of August 1890.
FELL & WILDING,
1, Queen Victoria Street, London, E.C., Agents for the Applicant.