IMPROVEMENTS IN MACHINERY FOR PARING OR TRIMMING LINSEED OR OTHER CAKE
Year: 1878

page_text: LETTERS PATENT to Francis Virtue, of Hull, in the County of York, for the
Invention of "IMPROVEMENTS IN MACHINERY FOR PARING OR TRIMMING
LINSEED OR OTHER CAKE."
Sealed the 30th August 1878, and dated the 22nd March 1878.
PROVISIONAL SPECIFICATION left by the said Francis Virtue at the Office
of the Commissioners of Patents on the 22nd March 1878.
FRANCIS VIRTUE, of Hull, in the County of York.
MACHINERY FOR PARING OR TRIMMING LINSEED OR OTHER CAKE."
"IMPROVEMENTS IN
My Invention relates to an improved machine for paring or trimming the edges
of linseed or other cakes, and it consists mainly in the combination with a table to
support a number or pile of the cakes mounted to revolve on an axis in order to
present every portion of the edges of the cakes to the action of the cutter or cutters
of a pattern plate revolving with the cake carrying table, and of a revolving cutter
or cutters mounted on an axis or axes in a swinging frame or frames hold up against
and guided by the said pattern plate, and operating to pare or trim the edges of the
whole pile of cakes at once, and cut them to a shape corresponding to that of the
pattern plate. The pattern plate thus serves to regulate the depth of cut, and con-
sequently the amount of material removed by the cutters, and determines the shape
of the cakes, which may be varied at will, the pattern plate being readily replaced
by another of different shape.
The improved machine also comprises gear for driving the cutters and table for
automatically throwing the machine out of action after each complete revolution
of the said table, and for clamping the cakes upon the table.
The table is fixed on a vertical spindle mounted in a suitable frame, and slowly
rotated by gear from a shaft parallel to the table spindle, a clutch operated by a
part moving with the table being introduced in order to throw the table out of
gear and arrest its motion after each revolution completed. Upon the said shaft a
frame is hung or pivoted so as to swing freely, at whose free end is mounted a
spindle carrying a revolving cutter head rising above the level of the table and

page_text: driven at a high speed from the shaft by a band running on pulleys on the shaft
and cutter spindle so that the swinging movements of the cutter carrying frame do
not interfere with the driving of the cutter.
A pattern plate is mounted to revolve with the table, and against the edge of
said plate the swinging frame or a friction roller carried by said frame is caused;
to boar by a weight or spring so as to follow the outline of the pattern plate, and
guide the cutters accordingly.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Francis Virtue in the Great Seal Patent Office on the 21st September
1878.
4
"
"IMPROVEMENTS IN
FRANCIS VIRTUE, of Hull, in the County of York.
MACHINERY FOR PARING OR TRIMMING LINSEED OR OTHER CAKE."
My Invention relates to an improved machine for paring or trimming the edges
of linseed or other cakes, and it consists mainly in the combination with a revolving
table, on which a.pile of the cakes to be pared or trimmed are placed, of a pattern
plate revolving with the table, and of a rotary cutter head mounted on an axis in
a swinging frame held up against and guided by the said pattern plate, the table
revolving to present every portion of the edges of the cakes to the action of the
cutters which pare or trim the edges of the whole pile of cakes at once, and cut
them to a shape corresponding to that of the pattern plate at a single revolution of
the table. The pattern plate thus serves to regulate the depth of cut, and conse-
quently the amount of material removed by the cutters, and determines the shape
of the cakes, which may be varied at will by replacing the pattern plate by another
of different form.
The improved machine also comprises gear for driving the rotary cutters and
table for automatically throwing the machine out of action after each complete
revolution of the said table, and for clamping the cakes upon the table.
The table is fixed on a vertical spindle mounted in a suitable frame, and slowly
rotated by gear from a shaft parallel to the table spindle, a clutch operated by a
part moving with the table being introduced in order to throw the table out of gear
and arrest its motion after each revolution completed. Upon the said shaft a frame
is hung or pivoted so as to swing freely, at whose free end is mounted a spindle
carrying a rotary cutter head rising above the level of the table, and driven at a
high speed from the shaft by a band running on pulleys on the shaft and cutter
spindle so that the swinging movements of the cutter carrying frame do not inter-
fere with the driving of the cutter spindle.
A pattern plate is mounted to revolve with the table, and against the edge of
Said plate swinging frame or a friction roller carried by said frame is caused to
bear by a weight or spring so as to follow the outline of the pattern plate and
guide the cutters accordingly.
:

page_text: Figure 1 represents a part elevation, part longitudinal section;
plan of the improved machine.
and Figure 2a
A is the main shaft; B, counter shaft; and C, revolving table shaft, all mounted
vertically in suitable bearings in the frame X of the machine.
The shaft A, which is driven by belt or other gear, has a pinion A' keyed on it
that drives a spur wheel B' keyed on shaft B. D is the revolving table fixed on the
upper end of shaft¸ C.
E is the pattern plate made in two parts, and fixed on the same shaft C by being
bolted to a smaller plate keyed on the shaft so as to be readily removable when it
is required to be changed. It acts in the manner of a cam on the swivelling frame
hereafter referred to.
F is the rotary cutter head carrying four or any other number of cutters. This
cutter head F rises above the table D, and the cutters are of a sufficient height or
length to trim the edges of a pile of say six or more linseed cakes of ordinary thick-
ness at once. The cutter head is fixed on the upper end of a vertical spindle
mounted to revolve in bearings in the free end of a swivelling frame G that is
pivoted at the other end on two fixed tubular pivots G¹, G², through which the main
shaft A passes, so that the frame G works on an axis coincident with the axis of
the main shaft.
His a clutch sliding on the counter shaft B, with a key connection so as to
rotate with it, and H is a pinion loose on the shaft B, with which said- clutch
engages, said pinion being in gear with a spur wheel C' keyed on the table shaft C.
I is a lever arm fixed on a cross shaft J, and forked at the end to embrace clutch
H, and I is another lever arm, also fixed on shaft J, extending in the opposite
direction, and loaded with a weight I. Said lever I' is provided with a down-
wardly projecting fork, in which a pin carrying a friction roller K is mounted.
This friction roller rides upon a rim L on wheel C, in which there is a notch K¹,
which comes under the friction roller K at every revolution of wheel C'.
roller K thus falls into said notch, oscillating lever I and raising clutch H out of
gear, and arresting shaft C and table D cach time the latter completes a revo-
lution.
The
M is a hand lever fixed on shaft J for throwing the clutch H into gear when the
machine is again ready for work. In an eye in this lever M plays the end of a
horizontal lever W, pivoted at W¹ to the under side of the fixed table or framework
of the machine, and carrying at its other extremity a friction roller, which, when
the clutch H is raised out of gear and the lever M is thrown over to the left, presses
against and runs up an incline W on the frame G so as to push back the frame
sufficiently to hold the cutters clear of the pile of cakes.
The spindle of the rotary cutter head F is driven at a high speed direct from
shaft A by a band running on pulleys N, N¹, respectively keyed on the said spindle
and shaft.
T is a friction roller on a pivot on the free end of the swivelling frame G, which
roller runs against the edge of the cam-like pattern plate E, and U is a weight
attached by a chain passing over a pulley to said frame G, and sufficiently heavy
to hold the rotary cutter head F up to its work, except when held back by the
lever W.
O are guides for the cakes, when being placed on the table D; these guides move
automatically from right to left, as the cakes revolve and are brought back to their
position by spiral springs in the interior at V.
P is a plate by which the pile of cakes is clamped down on table D whilst being
cut; this plate P is weighted above, and is pivoted on the lower end of a vertical
spindle R, mounted in an arm of the frame X, and attached at the upper end to a
chain R' passing over pulleys and down to the short arm of a lever Q working on a
horizontal fulcrum in a fork Q', so that by raising the handle of lever Q and fixing

page_text: •
it temporarily in a notch, the plate P is held up for the introduction or removal of
the pile of cakes; S, casing or guard for parings.
The modus operandi is as follows:-The plate P is first raised by means of
lever Q, and the uncut cakes are placed in a pile or block on the table D and against
the guides O, after which the weighted plate P is lowered on to the cakes. The
lever M is then moved to the right, thereby raising the friction roller K out of the
notch K¹, removing lever W from before the frame G so as to allow it to bring the
cutters up to the cakes, and throwing clutch H into gear. The table D being
thereby set in motion the whole circumference of the pile or block of cakes thereon
is by a single revolution of the table presented to the action of the cutters, which
are also caused to follow the outline of the pattern plate E, and the roller K rides
on the rim L until the notch K¹ again comes round; when the roller K again falls
into it the lever I is oscillated, and the machine is stopped as before.
I would have it understood that I do not limit myself to the shape of pattern
plate E shown in the Drawings, but may vary it so as to pare round, square, rectan-
gular, and oblong taper cakes.
Having described the nature of my Invention, and the manner of performing the
same, I declare that what I claim as my Invention to be protected by the herein-
before in part recited Letters Patent is,-
1st. The general combination and arrangement of parts, substantially as herein
'shown and described, constituting the improved machine whereby a number of
cakes may be pared or trimmed and cut to any desired shape at one operation, as
.described.
2nd. In a machine for paring or trimming linseed and other cake, the employ-
ment in combination of a revolving table, a pattern plate revolving therewith, and
rotary cutters guided by the pattern plate, substantially as shown and described, for
the purpose specified.
3rd. In a machine for paring or trimming linseed and other cake, the employment
in combination of a revolving pattern plate and a swinging frame carrying the
cutter spindle, said frame being pivoted on the shaft, whence said spindle is driven
and acted on by the pattern plate, substantially as and for the purpose
specified.
4th. In a machine for paring or trimming linseed or other cake, the employment
in combination with the revolving table and pattern plate of the lever I, the clutch
H, and the rim L having the notch K therein, substantially as and for the purpose
shown and described.
5th. In a machine for paring or trimming linseed or other cake, the employment
in combination with a revolving table of a plate to hold the cakes firmly on the
table, said plate being mounted to revolve therewith, substantially as shown and
described.
In witness whereof, I, the said Francis Virtue, have hereunto set my hand
and seal, this Eighteenth day of September, in the year of our Lord One
thousand eight hundred and seventy-eight.