Im- PROVEMENTS IN MACHINERY OR APPARATUS FOR CUTTING, SAWING, AND BORING Wood
Year: 1869

page_text: PROVISIONAL SPECIFICATION left by William Blackett Haigh at the
Office of the Commissioners of Patents, with his Petition, on the
6th July 1869.
I, WILLIAM BLACKETT HAIGH, of Oldham, in the County of Lan-
caster, do hereby declare the nature of the said Invention for "Im-
PROVEMENTS IN MACHINERY OR APPARATUS FOR CUTTING, SAWING, AND BORING
Wood," to be as follows:-
This Invention relates more especially but not exclusively to cutting
and sawing wood at any particular angle desired, such as for mitres and
similar purposes, and also to boring or what is technically called mortising
on the splay. I place in a groove on a suitable bed or table a horizontal
slide carrying one or more knives or cutters with oblique edges, which
slide and cutters are moved backwards and forwards by hand or power.
On the bed or table I have one or more guides, each of which is held at its
top end by a screw which moves in a slot in the frame, whereby the guide
is adjusted to any angle required when desired. To mitre or cut a piece
of wood at an angle the guides are first adjusted by means of the screw
in the slot to the proper angle, the wood is then passed down in contact

page_text: with the guide, and the knife caused to come against the wood at the
point required and cut it through. When mitreing, the guides, when
two are used, are placed at opposite corresponding angles to each other,
so that the wood being passed down against one guide and cut off is
reversed and brought against the opposite guide to be operated on by
the second knife, whereby right and left mitres are obtained. When a
number of pieces of one length are required, I attach to the guide a
spring stop for regulating the size. For cutting the ends of circular
pieces of wood I remove the guide and insert in the slot an adjustable
pin or stud, against which the edges of the pieces of wood are pressed
according to the desired angle. When required for working fine work,
or operating upon hard wood, I place at the back of the knife or knives
a back iron similar to a planing iron. I also employ guides working in
slots for guiding wood to a circular saw working by power, such guides
being arranged to present the wood to the teeth of the saw to be sawn off
at any desired angle. When required to use this machine for cross
cutting or at right angles to the length of the piece of wood, the guides
are simply removed from the bed and the wood presented to the knife or
saw at right angles. For mortising on the splay or bevil I employ a
compound carriage which is attached by an adjustable screw to a circular
plate moving up and down on a standard, according to the height of the
work to be operated upon. The said carriage has a saddle carrying a
table hinged in the middle with a movable fence at the top for shifting
the work to any desired. bevil. At the end of the saddle there is a wheel
and screw, which screw presses underneath the table, and when the
wheel is turned raises the bed or table upon which the work is placed to
be operated upon to the desired angle. The carriage itself may also be
made to turn to any angle required by means of the adjustable bolt
or screw which attaches it to the plate. By these arrangements the
work is held so that it may be mortised at three different angles at the
same time.