An Improved Wood-cutting Machine for Mitreing Picture Frames.
Year: 1886

page_text: An Improved Wood-cutting Machine for Mitreing Picture
Frames.
I, WILLIAM HAIGH, of Osborne Street, Manchester Road, Bradford, in the County
of York, picture-frame Manufacturer, do hereby declare the nature of the above
named invention to be as follows:-
My invention relates to a machine driven by power, which by means of cutters
or blades, fitted upon revolving discs, cuts and trues up the ends of picture frame
and other mouldings, thereby making them ready to be united in a mitre joint.
To carry out my invention, I employ a truly planed table, similar to an ordinary
saw-bench with parallel sides.
Under the table is a shaft, reaching across, and running in bearings fixed to the
frame of the table, and upon each end of the shaft is a disc, which projects above
the edge of the table, and runs close to the side thereof. Plane irons or cutters are
fixed in these discs, and are caused to revolve with the discs.
An adjustable gauge, or raised ledge, is fixed upon the table, the two sides of
which gauge are placed at an angle of forty five degrees with the sides of the table,
and with the cutter discs, and the two sides of the gauge meet one another at a
right angle.
The moulding to be mitred is held against the gauge, and pressed forward
against the cutter disc, which is caused to revolve at a high speed, and the cutters
or plane-irons cut or shave off the end of the moulding as much as may be
required, and leave a perfectly true and smooth surface at the required angle for
mitreing.
WILLIAM JAMES BAKER,
Agent for the Applicant.

page_text: I, WILLIAM HAIGH of Osborne Street Manchester Road Bradford in the County
of York, picture frame manufacturer 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:-
This invention relates to the construction of an improved machine provided with
cutters or blades mounted upon revolving discs whereby the ends of picture frames
and other mouldings can be cut and trued up so as to prepare such ends to form
a mitre joint.
In carrying out my invention I employ a truly planed table, similar to an
ordinary saw bench, with parallel sides. Under the table is a shaft extending
across the same, and running in bearings fixed to the frame of the table, and upon
each end of the shaft is fixed a disc which projects above the edge of the table and
revolves close to the side thereof. Plane irons or cutters are fixed in and are
caused to revolve with the said discs.
An adjustable gauge or raised ledge is fixed upon the table, the two sides of
which gauge are placed by preference at an angle of forty five degrees with the
sides of the table and with the cutter discs, the two sides of the gauge meeting one
another at a right angle.
The moulding to be mitred is held against the gauge and pressed forwards
against the cutter disc, which is caused to revolve at a high speed and the cutters
or plane irons cut or shave off the end of the moulding as much as may be
required and thereby form a perfectly true and smooth surface at the required
angle for mitreing.
In order to enable my invention to be fully understood I will proceed to describe
the same by reference to the accompanying drawings in which Figure 1 represents
an end elevation of a machine for cutting mitres for picture frames and the like,
constructed according to my invention.
Figure 2 represents a side elevation and Figure 3 a plan of the same. Figure 4
is a sectional elevation, drawn to a larger scale of one of the cutter discs showing
more clearly the means for adjusting and securing the plane iron or cutter.
Similar letters refer to similar parts in all the figures of the drawing.
A is the shaft on the ends of which the revolving cutter discs D are secured by
nuts, B and C are fast and loose pulleys respectively on the shaft A. K are the
side-frames of the machine to which the bearings of the shaft A are fixed. The
cutting edge of the plane-irons or cutters E is represented at F and these cutting
edges project a suitable distance through rectangular slots formed in the cutter
discs.
The plane irons rest upon wedges H and when adjusted are held in position by
means of cramps G which are pivoted at N. The broad end of the cramp presses
upon the plane iron or cutter near its cutting edge F and a set screw which passes
through the narrow end of the cramp also presses upon the plane iron or cutter
so that by tightening the set screw the plane iron or cutter is held firmly in the

page_text: required position, and as much of the cutting edge thereof is allowed to project
through the slot in the cutter disc as is necessary to make the required cut.
The moulding to be mitred is placed with its flat side upon the table J and
pressed upon the gauges or fences Land at the same time the ends of the moulding
are forced against the cutter discs, which are caused to revolve rapidly by means of
power communicated by a belt to the fast pulley B or by means of a foot treadle;
and the cutters or plane irons will cut or shave off the end of the moulding as
much as may be required and a perfectly true and smooth surface will be thereby
formed at the required angle for producing the mitre.
A loose top 0 is provided at one end of the table, which loose top can be
adjusted to the required position, to assist in steadying the moulding being operated
upon, and fixed by means of bolts which pass through slots formed in the loose
top, which top when required can be removed altogether to leave space for larger
mouldings. Side pieces or guides P are also secured by means of bolts passing
through slots, and these side pieces with the loose top O are adjusted and screwed
fast to suit the particular form or size of moulding to be operated upon.
The gauges or fences L will be usually fixed at an angle of forty five degrees
with the sides of the table for the purpose of cutting mitre joints for four sided or
rectangular frames, but these gauges or fences can be adjusted and held fast by
means of bolts which pass through slots M formed in the table J, at any other
angle that may be necessary for forming the mitres of frames which have more
than four sides.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. The general arrangement of the improved machine for cutting mitres for
picture frames and the like, substantially as described and represented in the
accompanying drawings.
2. In a machine for cutting mitres for picture frames and the like, the revolving
cutter discs, with the cramps and set screws for fixing the plane irons or cutters,
substantially as hereinbefore described and represented in the accompanying
drawings.
3. In a machine for cutting mitres for picture frames and the like, the adjustable
guides or fences, combined with the revolving cutter discs, substantially as herein-
before described and represented in the accompanying drawings.
4. In a machine for cutting mitres for picture frames and the like, the adjustable
guides and side pieces, combined with the loose top, all of which are adjustable, by
means of bolts passing through slots, substantially as hereinbefore described and
represented in the accompanying drawings.
5. In a machine for cutting mitres for picture frames and the like, the two
revolving cutter discs, mounted at, and revolving close to each side of a rectangular
sided table, substantially as herein before described and represented in the
accompanying drawings.
Dated this fountranth day of Anmil 1000