An Improved Machine for Mitreing and Cutting.
Year: 1890

page_text: Date of Application, 17th Apr., 1890
Complete Specification Left. 25th July, 1890-Accepted, 20th Sept., 1890
PROVISIONAL SPECIFICATION.
An Improved Machine for Mitreing and Cutting.
I, WILLIAM HUTCHENS, of 70 Causewayhead, Penzance, in the County of Cornwall,
Cabinet Maker, do hereby declare the nature of this invention to be as follows
The object of this invention is to produce a machine for mitreing and cutting at
any desired angle the cut being clean and easily effected.
The machine is mounted on a suitable stand and consists of a plane working in a
borizontal bed. The underside of the plane is furnished with a rack with which gears
a cog wheel or a toothed sector affixed to, or formed in one with, a horizontal spindle,
actuated by means of an ordinary counter balanced lever or winch handle.
The frame is pivoted on the bed of the machine and may be adjusted by means of
set screws or their equivalents, so as to take up any angle as desired.
Dated this 17th day of April 1890.
"
CASTLE SMITH,
Invention" Office, 54, Fleet Street, London, E.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improved Machine for Mitreing and Cutting.
I, WILLIAM HUTCHENS, of 70 Causewayhead, Penzance, in the County of Cornwall,
Cabinet Maker, do hereby declare the nature of the 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 sheet of
drawings and to the letters and figures marked thereon that is to say :-
This invention has for its object the production of a convenient simple cheap and
efficient machine or apparatus for mitreing and cutting at any desired angle so that
the cut shall be clean and easily effected.
In carrying my invention into effect, 1 employ a metal or other suitable bed or
sole plate to support and carry the working parts, and the material to be operated
upon, and which when the whole is put together may be placed or supported on a
suitable stand at the height most convenient for performing the work.
The working parts consist of a moveable plane or part of metal or other suitable
material (working on the bed plate over a guide or groove formed therein) so arranged
by means of suitable cutters as to cut or plane whilst moving in either direction,
which cutters are provided with suitable means for regulating and adjusting the
depth of cut and readily removing and replacing them for sharpening or other
purposes. The cutters or irons may be of widths varying with the thickness of the
material to be worked and can be set so that the top edge shall take the lead in
cutting.
On the underside of the moving part to which the cutters are attached, I form or
firmly attach a tooth rack or other suitable means for giving a right and left travel
or reciprocating motion to the part and the cutters, either by means of a toothed
pinion, quadrant or sector fixed to or formed on a horizontal shaft or stud to which
a partially circular or rotary movement is given, or a crank may be formed on, or
attached to the said horizontal shaft or stud to which a partially circular or rotary
motion is given, or a crank may be formed on or attached to the said shaft or stud
and be connected by links or short rods to the part containing the cutters, so as to
give the required movement to the same on actuating or revolving the said shaft
or stud.

page_text: On the underside of the part to which the cutters are attached, I form a projecting
part or guide which fits into and works in a dovetailed groove formed in the bed of
the machine, so as to ensure its being moved guided or travelled in the proper line.
It may be found more convenient however to employ two separate pieces of metal
one at each end, case hardened if desired, and firmly attached by screws to the ends
of the parts carrying the cutters in place of forming it in one with that part, and
suitable steady pins being provided on these separate pieces, they may be readily
removed and replaced when desired or required with great exactitude.
On the bed plate I place the adjustable guide or fence which regulates the angle or
bevel at which the material is to be cut, and by means of set screws and steady pins
or by set screws alone, it may be adjusted and firmly held in the required position.
If preferred one guide or fence capable of being opened and adjusted to a greater, or
closed to a less angle of bevel may be employed, or single guides or fences for each
required bevel may be used.
In the accompanying diagrams the machine or apparatus is shewn as adapted to be
actuated by hand through an adjustable lever and toothed wheel pinion or sector gearing
into a rack formed on or attached to the part which carries the cutters. It will be
seen that the hand lever can be adjusted to the desired length by means of the set
screw in the socket at the end of the horizontal shaft or stud through which the
lever passes, and the counterbalance weight at the other end of the lever can also be
similarly adjusted, and that on giving the top end of the lever a right and left or
reciprocating motion the cutters will be caused to act on the material brought against
them, and cut it to the angle or angles at which the guide or fence is adjusted.
In order that my invention may be more readily and clearly understood I will
proceed to describe the same by the aid of the accompanying diagrams, Figure 1
being a plan, Figure 2 a front sectional elevation on line a b Figure 1, and Figure 3
an end elevation. Similar parts are denoted by like letters of reference in each
figure. A A is the bed or sole plate. B the moveable part containing the cutters,
CC (which may be used of any suitable width and set so as to cut with a draw cut)
and arrangements for fixing and adjusting the same (shown where the upper part is
broken off) D is the adjustable fence or guide and the screws cl c² c for holding and
adjusting the same (and which when set square with the face of the plane will
enable the ends to be squared). E the groove or guide in which the projections on the
plane or part B work. FF the separate parts, projections or pieces, which work in
the groove E, and the screws ff which hold the same in place. G Figure 2, shows
the rack on the under side of B, into which the pinion, quadrant, or sector H gears.
I the horizontal shaft or stud on which the same is attached. K socket on end of
shaft through which the adjustable lever I passes, and is fixed by the set screw M.
The adjustable counterweight and set screw are shewn at N, Figure 3. In Figures 1
and 20 shows the screws on which part of the arrangements connected with the
cutters work.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I desire to state that I
do not claim as of my invention the use of a machine or apparatus for cutting
mitres, as this is not new; nor do I claim the use of the plane or moving part con-
taining two cutters, so that it cuts when moving in either direction as this has been
used before; neither do I claim any of the parts individually as new, for these have long
been known and in use for other purposes, but what I do claim as of my invention is
The manner method or mode of actuating such machine, as shown in the
diagrams and bereinbefore specified, and the combination and arrangement of parts
forming a mitre cutting machine, in the manner shown in the accompanying diagrams
and as hereinbefore described and specified.
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1000