AN Improved · Tear on CumMED HOLDER POR METAL PLAYING OR SHAPING MACHINES
Year: 1871

page_text: LETTERS PATENT to William Walkington, of Leeds, in the County of
York, Engineers' Tool Maker, for the Invention of “AN Improved ·
Tear on CumMED HOLDER POR METAL PLAYING OR SHAPING MACHINES."
Sealed the 13th October 1871, and dated the 11th May 1871.
PROVISIONAL SPECIFICATION left by the said William Walkington at
the Office of the Commissioners of Patents, with his Petition, on the
11th May 1871.
I, WILLIAM WALKINGTON, of Leeds, in the County of York, Engineers'
Tool Maker, do hereby declare the nature of the said Invention for
"AN IMPROVED TOOL OR CUTTER HOLDER FOR METAL PLANING OR SHAPING
MACHINES," to be as follows :—
This Invention relates principally to that part of a tool or "cutter
holder," usually termed the "tool box," used in machines for planing
or shaping iron or other metal, and consists essentially in so constructing
the same as to receive two holders and cutters.

page_text: The tool boxes as ordinarily constructed only receive one holder and
one tool or cutter, the iron or other metal under operation being cut
in one direction only, and they are provided with a quick return motion
during which time they run back, the cutter doing nothing; there are
others, however, which at the end of the forward cut are caused to turn
round and allow the tool to cut back in the opposite direction, but
according to this Invention the tool box is so constructed as to receive
two holders, and each of these a tool, which are placed in such positions
that one of them cuts during the forward movement of the vertical
slide of the planing or shaping machine a rough cut, and instead of the
return motion being wasted the other tool is caused to act on the metal
under operation and to produce thereby the finishing cut, so that the
cutting or planing is effectually performed in one double movement
(forwards and backwards) of the vertical slide (to which the "tool box"
is attached) and with only one traverse across the surface.
"
Amongst other important advantages to be derived from this Invention
may be mentioned a great saving of time and labour, and consequently of
expense. Each holder works in the "tool box on a separate pin (which
keeps the same in their proper places, and upon which they vibrate,)
and the pins being arranged on opposite sides of the tool holders allow
the same to fall in opposite directions. Or, when it is required that both
tools should cut in the same direction for certain shapes of materials,
it is so arranged that by removing the two pins and inserting a single
longer pin through the two holders so as to allow them both to fall one
way they can be used as required and can be used with the quick return
motion.
The apparatus may be constructed either so as to receive the tools
one before the other for a certain class of work, or, as previously
described, alongside each other, each arrangement being specially adapted
for its own class of work.
The planing or shaping machines using these "tool boxes" would be
required to travel equal speed forwards and backwards when using the
reverse cut, and to travel with the quick return motion when the two
cutters act in the same direction.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Walkington in the Great Seal Patent
Office on the 11th November 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
WALKINGTON, of Leeds, in the County of York, Engineers' Tool Maker,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eleventh day of May, in the year of
our Lord One thousand eight hundred and seventy-one, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said William Walkington, Her special
licence that I, the said William Walkington, my executors, adminis-
trators, and assigns, or such others as I, the said William Walkington,
my executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "AN IMPROVED TOOL
OR CUTTER HOLDER FOR METAL PLANING OR SHAPING MACHINES," upon the
condition (amongst others) that I, the said William Walkington, my
executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the same
was to be performed, and cause the same to be filed in the Great Scal
Patent Office within six calendar months next and immediately after.
the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Walkington, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the accompanying
Drawing forming a part of this Specification:-
This Invention relates to the tool or cutter holder, commonly termed
the "tool box," used in machines for planing or shaping iron or other
metal, and consists essentially in the peculiar manner of constructing
the same to receive two tools or cutters.
These tool boxes are most frequently constructed to receive only one
holder and one tool or cutter, the iron or other metal under operation

page_text: there
being cut in one direction only, and having a quick return motion;
are other machines, however, in which at the end of the forward cut the
tool is caused to turn round and cut in the opposite direction. And in
other machines two or more tools have been arranged to cut in opposite
directions. All of these contrivances, however, have been found more
or less objectionable either from their cost, their liability to get out of
order, the necessity of their constant supervision by skilled operatives,
or for other reasons.
But by my Invention I obviate all of these objections and provide a
cheap, simple, compact, and efficient compound tool box for a shaping
or planing machine.
According to my said Invention the tool box is constructed to receive
two holders, and each of these carries a tool, the object being to have
the tools placed in such positions that one of them cuts during the
forward movement of the table of the planing machine (or of the head
of the shaping machine) and the other tool during its return motion.
I prefer that the first tool should make a rough cut and the other tool
the finishing cut, so that the cutting or planing is effectually performed
in one double movement (forward and backward) of the table or the
vertical slide of the machine, and with only one feed across the surface
of the work.
Amongst other important advantages to be derived from this Invention
may be mentioned a great saving of time and labour, and consequently
a reduction of expense.
In my tool box are two holders on separate pins (which keep the
same in their proper places and upon which they vibrate), the said pins
being arranged to allow the tools to fall in opposite directions. Or if
both tools should be required at any time to cut in the same direction
for certain shapes of materials by a simple adjustment of the holders
and their supporting pins the two holders can be set to allow both tools
to fall one way and to cut in the same direction.
The apparatus may be constructed either to receive the tools one in
front of the other or side by side, each arrangement being specially
adapted for particular classes of work.
The planing or shaping machines in which my improved tool boxes
are used should be arranged to travel forward and backward at the
same speed when the tools are set to cut in opposite directions, and to

page_text: DESCRIPTION OF THE DRAWING.
Figure 1 is a front elevation of my improved compound tool box or
holder showing the tools arranged with one nearly in front of the other;
Figure 2 is a side elevation of the same; Figure 3 is a front elevation
of the said tool box with the tools arranged side by side therein;
Figure 4 is a side elevation of Figure 3. Like letters indicate the
same parts throughout the Drawing.
A is the tool box or holder made of cast iron or other suitable metal,
and designed to be secured by bolts or screws in the ordinary manner
to the vertical slide of a planing, shaping, or slotting machine.
It will be seen by referring to the Drawing that the body a of the
said box or holder is of a convenient form to be fixed as aforesaid to
the vertical slide of the machine, and the part a¹ is hinged or jointed
to the said fixed part by the pin or bolt b, on which it swings; c, d, are
the tools or cutters. One of these tools or cutters c is secured in the
part a of the box by the holder c³, which also swings on a pine. This
pin and the pin b are preferably made taper as shown, and are provided
with screw nuts b¹, e¹, whereby they are from time to time drawn further
into their holes to compensate for the wearing of the swinging holders;
b, c, and c, are bolts and clamps, whereby the tools are secured to
the said swinging holders. It is necessary to provide the box with
means for securing the swinging piece or front a¹ when the tool d is
cutting and releasing it, when the said tool is to be turned up away
from its work to allow access to the inside of the box. I have shown
two contrivances for accomplishing this object, one of which is a hook
or catch turning upon a bolt or pin f¹ on the side of the part a of
the box, the same being arranged to take hold of a pin or stud g formed
on the end of the bar g¹ fixed on the swinging piece a¹. I use two of
these catches, one at each side of the box. When it is desired to liberate
the swinging piece and turn the same up it is only necessary to raise
the catches f from the pins g. The other contrivance employed for the
same purpose is a screw with a head h' of, the shape shown in Figures 1
and 3. One of these screws is fitted into a tapped hole in cach side
of the part a of the box in such a position that when the head is
adjusted, as shown in Figure 1, the circular part thereof overlaps the
swinging piece and prevents its opening, but when the head is turned

page_text: with its flat side parallel to the edge of the swinging piece, as shown
in Figure 3, it no longer overlaps the said swinging piece, and the
latter may be opened or turned up as above described. When this piece
is turned up access may be had to the interior of the box, and by
means of a key or other suitable implement the tool c may be fixed or
released.
In order that one of the tools may be capable of adjustment inde-
pendently of the other with regard to the depth of its cut I provide
the swinging piece a¹ with a vertical slide i, to which the tool is secured
by the slotted bolts 62; the latter project through the swinging piece or
front and are provided with nuts 63 outside the same, whereby the
aforesaid slide may be made fast or released. For raising and lowering
the slide i I provide a small excentric j, which is fitted in the piece a¹,
and so arranged to act on the slide that by turning it the latter will be
raised or lowered. The said excentric has a short spindle or stem j¹
projecting through the swinging front, and the end thereof is made
square to receive a box, key, or wrench, whereby the said excentric is
operated.
When the tool is to be adjusted I first release the slide by slackening
the nuts 3, then turn the excentric till the tool is brought to the
required position, and then tighten the said nuts to again secure the
slide. If desired I may use a screw instead of the excentric for
adjusting the slide i, the said screw having a square head projecting
above the top of the swinging piece in a convenient position to be
operated by a box, key, or spanner.
l
In the modification of my Invention illustrated in Figures 3 and 4,
k, l, are two swinging holders carrying the two tools c, d. One holder k
is hung upon the pin k¹ and the other holder upon the pin 1, both
of the said pins being passed through the sides of the body a of the
box, and their inner ends being supported in the central rib a. The
holder which carries the tool c finds its support when the said tool is
cutting against the back of the box, but the other tool d which cuts
in the opposite direction has to be provided with other means of support,
and I prefer to employ for this purpose the screws / with peculiarly
formed heads, arranged and operating as herein-before described. The
holder has only one hole at the top, as its point of suspension is never
changed, but the holder has two holes, one opposite each of the holes
1, 2, in the sides of the box. When the two tools are arranged to cut

page_text: in opposite directions as shown, the said holder is suspended by the
pin at 1, but if it is desired to have both tools arranged to cut in the
same direction instead of backward and forward, I take out the pins ³, l,
and insert one long pin at 2, which passes completely through the box
and through both holders. Then, by setting the tool d to correspond
with the tool c, they will be properly arranged for both to cut in the
same direction.
Having thus fully described my said Invention, and shown how the
same is to be performed, I claim,-
First. A planing or shaping machine tool box that will carry two
tools cutting in opposite directions, constructed with a swinging front
which holds one tool and opens or turns up to allow access to the part
of the box holding the other tool, and provided with appliances for
securing and releasing the said swinging front, and for fixing, releasing,
and adjusting the tools as herein set forth.
Second. Providing the said tool box with two swinging holders placed
side by side, and so constructed and arranged in combination with tho
other parts of the box that the tools may be adjusted to cut in the same
direction, or in opposite directions, as herein set forth.
In witness whereof, I, the said William Walkington, have here-
unto set my hand and seal, this Tenth day of November, in
the year of our Lord One thousand eight hundred and seventy-
one.
Witness,
W. ROBT. LAKE.
W. WALKINGTON. (L.S.)