IMPROVED WOOD CUTTING MACHINE APPLICABLE FOR MAKING " FRAMES to be as follows
Year: 1884

page_text: We, ABEL M°DONALD and THOMAS WILLIAMSON KENDALL both care of
Wm P. Thompson & Co Patent Agents 6, Lord Street, Liverpool, in the County
of Lancaster, Photographers do hereby declare the nature of our said invention
for "IMPROVED WOOD CUTTING MACHINE APPLICABLE FOR MAKING
"
FRAMES to be as follows :—
PICTURE
The improved machine which constitutes this invention is designed for the
purpose of cutting the ends or the joints of the wood from which picture frames or
other articles are inade to the exact angle required, usually one of 45 degrees, by
means of a circular saw and suitable mechanism.
The apparatus consists of a frame or stand preferably of cast iron, carrying a
fly wheel and belt pulley actuated by a treadle or otherwise for the purpose of
giving motion by means of a driving belt to a circular saw placed above it, and
two or more sliding tables which carry the wood to be cut.
The table or top of the machine upon which the wood is placed to be cut, carries
on its upper surface two guides fixed at an angle of 45 degrees to the saw, and
another guide parallel to the axis of the saw fixed opposite to an ordinary saw
bench gauge for use in cutting joints such as are made in Oxford frames. This
table or saw bench rests on a vertically sliding frame and slides horizontally
thereon, being held in position by a flange at each side or other suitable device.
The vertically moving frame upon which the table or saw bench rests, carries on
its under side four slides or inclined planes, preferably right angled triangles
which rest upon four similar triangular or inclined slides fixed to an intermediate
frame beneath it. The hypothenuse of each of these triangles rests upon the
hypothenuse of a triangle corresponding to it. The lower set of triangular slides
are with the frame or slide to which they are attached movable in a horizontal
direction and capable of being drawn in or out by turning a wheel on the outside
of the frame connected with it by means of a screw or other similar mechanism.
The table and upper frame move vertically between fixed guides, and the horizontal
movement of the bottom frame causes the inclined slides to move one on the other
and thus raise or lower the table. By this means the height of the table and
consequently of the guide frame fixed upon it, may be adjusted with reference to
the circular saw which projects through a suitable opening in the table or bench,

page_text: The operation of the machine is as follows. The table or saw bench is first
adjusted to the correct height in relation to the saw by turning the screw wheel in
front, which causes the lower wedges or triangles to move backwards or forwards
and thereby raises or depresses the main table together with the frame on which
it rests. The saw is then set in motion and the objects to be cut are placed
against the guides on the surface of the sliding table which together with the wood
placed on it is then pushed towards the saw until the requisite cut is effected.
By this arrangement uniform angles are obtained with great facility and without
the necessity of further gauging and adjusting by hand and the joints for Oxford
frames may be cut to the required depth. By this means we dispense with
planing.
We also purpose fixing a vice for holding frames and other objects while being
nailed together.

page_text: COMPLETE SPECIFICATION.
J
We, ABEL MCDONALD and THOMAS WILLIAMSON KENDALL, both care of
W P. Thompson and Co, Patent Agents, 6 Lord Street, Liverpool, Lancashire,
Photographers do hereby declare the nature of our said invention for "IMPROVED
WOOD-CUTTING MACHINE APPLICABLE FOR MAKING PICTURE FRAMES" and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:—
The improved machine which constitutes this invention is designed for the
purpose of cutting the ends or the joints of the wood, from which picture frames
or other articles are made, to the exact angle required, usually one of 45 degrees
by means of a circular saw and suitable mechanism.
Referring to the drawings:-
Figure 1 sectional elevation of apparatus constructed according to our invention.
Figure 2 plan with table or top removed.
Figure 3 plan of top or table.
In these A is a frame or stand preferably of cast iron, B is a fly wheel on a
crank shaft C carried in suitable bearings D in the framing A. E is a treadle by
means of which motion is conveyed to the crank shaft C and through it to the fly
wheel B. If desired the shaft and wheel may be driven by power instead of by
manual labour though for small machines and for light work one such as shown
will be found very suitable. The circular saw H is driven by means of a strap F
between the wheel B and a pulley G on the shaft h upon which it is mounted.
The shaft h of the circular saw is carried between two fixed centres i screwed into
brackets I attached to the frame-work A. The saw projects through a slit or slót j
in the table J.
The table or top J of the machine upon which the wood is placed to be cut,
carries on its upper surface two guides K fixed at an angle of 45 degrees to the
Baw, and another guide L parallel to the axis of the saw fixed opposite to an
ordinary saw bench gauge M for use in cutting joints such as are made in Oxford
frames. The table or saw bench J rests on a vertically sliding frame N and slides
horizontally thereon, being held in position by a flange at each side or other
suitable device.
To the frame N upon which the table or saw bench rests, is attached on its
under side four slides or inclined planes O preferably right angle triangles which
rest upon four similar triangular or inclined slides P fixed to an intermediate
frame Q beneath it. The hypothenuse of one triangle rests upon the hypothenuse
of another corresponding to it. The lower set of triangular slides P are with the
frame or slide Q to which they are attached, movable in a horizontal direction.
The sliding frame Q is moved by means of a hand wheel R to which is attached
the screw T.
On turning the wheel and screw the frame is drawn backwards or
forwards as required. The upper frame N moves vertically between fixed guides,
the horizontal movement of the bottom frame causes the inclined or triangular

page_text: elides to move one on the other and thus raise or lower the table. By this means
the height of the table and with it that of the guide frame fixed upon it, may be
adjusted in relation to the circular saw which projects through an opening in it.
S is a vice attached to the side of the framework A for holding the frames or
other objects while being nailed together. It may be made to be closed with a
screw but we prefer the arrangement shown, as the operator can control it with his
foot without removing his hands from his tools... S is the jaw of the vice attached
to which at right angles is a rack 8 which is placed in gear with a spur wheel T.
This wheel is actuated through the rods t by the treadle U. u is a counterbalance
weight by means of which the treadle is raised and the wheel T moved in the
reverse direction to open the vice when the foot is removed.
The operation of the machine is as follows: The table or saw bench J is first
adjusted to the correct height in relation to the circular saw H by turning the screw
wheel R in front, which causes the lower slides or triangles P to move backwards
or forwards and thereby raises or depresses the frame N together with the table
which rests on it. The saw is then set in motion and the objects to be cut are
placed against the guides on the surface of the sliding table which with the wood
'placed on it is then pushed towards the saw until the requisite cut is effected.
r
By this arrangement uniform angles are obtained with great facility and without
the necessity of further gauging and adjusting by hand, and the joints for Oxford
frames may be cut to the required depth, and planing may be dispensed with.
Having now particularly described and ascertained the nature of our said
Invention, and in what manner the same is to be performed, we declare that what
we claim is
1st. A wood cutting machine having the table or saw. bench adjustable in height
in relation to the saw and raised and lowered by means of inclined planes or slides
on or attached to a horizontally sliding frame acting upon similar slides on or
attached to a vertically sliding frame, substantially as described.
2nd. In a wood cutting machine the combination with a circular rotating saw
with stationary axis, of a vertically movable frame adjusted upon inclined slides
and having a saw bench or top moving thereon horizontally and provided with
guides set at an angle of 45 degrees or thereabout substantially as and for the
-purposes described.