Improvements in Machines for Planing and Moulding Wood.
Year: 1891

page_text: Date of Application, 18th June, 1891
Complete Specification Left, 13th Mar., 1892-Accepted, 16th Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in Machines for Planing and Moulding Wood.
We, JOE SAGAR, and DONALD SAGAR, of Water Lane Ironworks, Halifax, in
the County of York, Machine Makers, do hereby declare the nature of this
invention to be as follows:-
The object of the first part of our invention in wood planing and moulding
machines is to prevent the bottom or first cutter spindle from "plucking" out knots
or other curly" places which are often found in boards under operation, even
under a fast speed or quick travel of the board. To prevent this we cause the
first cutter spindle to have a positive end wise oscillating motion, in addition to
the usual rotary motion, by which means the said cutter spindle imparts to the
board a
"draw cut," or the action of the cutters is distributed over the said
board.
Our invention has also reference to the top or second cutter spindle, and consists
in hinging to the cutter head casting, an adjustable chip breaker or pressure bar,
which may readily be placed nearer to or farther from the cutters to suit the
description of cutter being used, but in no case can the said pressure bar come into
contact with the said cutters, notwithstanding any difference in thickness of board
under operation, and which is for the time being, sliding or moving under the
pressure bar, and if the board be of unequal thickness the pressure bar is so hinged
that it will automatically raise to suit the inequalities, in doing which, the chip
breaker or pressure bar would recede slightly from the cutters.
By hinging the adjustable pressure bar to the cutter head casting, no alteration
is now required when working upon different thicknesses of wood, as is the case
with those at present in use, and which are fixed concentric with the cutter
spindle, or attached to the body of the machine, in which latter case the pressure
bar cannot be raised or lowered simultaneously with the cutter head casting.
A flexible pressure bar similar to the one described above can also be applied
to the vertical cutter spindle castings which operate on the outside edges of the
board after passing the first and second cutters mentioned above.
Dated this 17th day of June 1891.
TASKER & CROSSLEY,
Halifax, Agents..
COMPLETE SPECIFICATION.
Improvements in Machines for Planing and Moulding Wood.
We, JOE SAGAR, and DONALD SAGAR, of Water Lane Ironworks, Halifax, in
the County of York, Machine Makers, do hereby declare the nature of this invention
and in what manner the same is io be performed, to be particularly described and
ascertained in and by the following statement:-
This invention has reference to wood planing or moulding machines having
horizontal or vertical cutter spindles, our improvements therein consist firstly in
the employment of means to prevent the bottom or first cutter spindle or other
rotary cutter spindle whether vertical or horizontal from "plucking" out knots or
other "curly" places (which are often found in boards under operation) even under
a fast feed or quick travel of the board. To prevent this we cause the first cutter
spindle to have a positive endwise oscillating motion in addition to the usual rotary
motion, the means whereby this is effected being shewn in the accompanying
drawings, wherein

page_text: Fig. 1 is elevation of a wood planing machine, Fig. 2 plan view, and Fig. 3 cross
section; A being framework of the machine, B the board under operation, and
C the bottom or underside revolving cutter mounted in suitable bearings attached
to the pedestal or casting D. This casting is attached to a short connecting rod
or crank arm E, the opposite end of which is fitted to á crank pin F projecting
from a small face plate G, receiving rotary motion from the bevel wheels H-driven
by pulley I, all of which, imparts to the pedestal or casting D, and likewise to the
cutter C, a reciprocatory motion in addition to the ordinary rotary motion, by
which means the action of the cutters is equally distributed over the said board,
imparting thereto what is commonly called a "draw cut."
Although we have shewn and described how a horizontal cutter spindle may be
made to reciprocate, it will be understood that we may also apply our invention to
a vertical cutter spindle.
Our invention has also reference to the top or second cutter J (see Figs. 1 and 2);
and our improvements therein consist in hanging at K, on the cutter head casting L
an adjustable and yielding chip breaker or pressure bar M supported in the cross
bar N which is adjustable upon and carried by the two arms O hinged to the cutter
head casting at K. This pressure bar bears upon the board B, and it may be
readily moved nearer to or further from the cutters to suit the description of cutter
being used by means of the adjusting screw P', but in no case can the said pressure
bar M come into contact with the said cutters, notwithstanding any difference in
thickness of board under operation, as, by carrying the pressure bar on the end of
the hinged arms O, it rises and falls with any inequality in thickness of the board,
but cannot approach nearer the cutters than the point of the set screw P will allow,
and this in the first instance is adjusted accordingly. The pressure bar M is also
made adjustable cross-wise of the board so as to adapt itself to unevenness in that
direction, and this is effected by spiral springs R, which bear upon the pressure
bar and the underside of a recess or opening in the cross bar N, the adjustment in
the first instance being performed by the set screw S.
By hinging the adjustable yielding pressure bar to the cutter head casting, no
alteration is now required when working upon different thicknesses of wood, as is
the case with those at present in use, which are attached to the body of the
machine, in which case, the pressure bar could be raised or lowered simultaneously
with the cutter head casting.
A flexible pressure bar M', similar to the one already described may also be
applied to the vertical cutter spindle casting T, which operates on the outside edges
of the board after passing the first and second cutters mentioned above. The
pressure bar M' is forced against the edge of the board by the weight U which is
connected by cord V to the said pressure bar.
.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what
we claim is :-
Firstly. In a wood planing or moulding machine having horizontal or vertical
cütter spindles the combination therewith of means, substantially as herein shewn
and described, or any modification thereof, for imparting a reciprocatory motion to
the cutter spindles, for purposes set forth.
Secondly. In a wood planing or moulding machine having horizontal or vertical
cutter spindles the application thereto of a yielding and self-adjusting pressure
bar, arranged and operated in manner substantially as described and shewn in the
drawings.
Dated this 17th day of March 1892.
TASKER & CROSSLEY,
Halifax, Agents.