Improvements in Machines for Cutting or Shaping Wood or other Materials.
Year: 1894

page_text: Date of Application, 6th Nov., 1894-Accepted, 12th Jan.,
1895
:
COMPLETE SPECIFICATION.
Improvements in Machines for Cutting or Shaping Wood or other
Materials.
I WILLIS JAY PERKINS of Grand Rapids, in the State of Michigan, United
States of America, Manufacturer do hereby declare the nature of this 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 a new and useful machine for cutting shapeing and
trimming wood, or any character of stock that can be cut with an iron plane, and
the same is adapted to cut the wood or other material at any required angle by
means of reciprocating knives moved by suitable mechanical power and adjustable
gauges or wings determine the relative position of the wood and cutting knife, and
the objects of my invention are:-
First; to substitute mechanical power in the place of manual labour in operating
the machine.
Second. To have the machine automatically stopped at a predetermined point
by means of suitable stops and devices while the same is under the full control of
the operator by means of hand-actuating mechanism.
Third-To increase the range of work over what can be practically accomplished
by a hand machine.
+
Fourth-To provide gauges or wings which may be shifted to a larger angle
than ordinarily used, the same being controlled by an adjustable stop outside and
beyond its travel, which stop can be shifted to stop the gauges at any predetermined
angle.
Fifth. To provide a wing or gauge that can be shifted out of adjusted position
and arranged so as to stop automatically at any predetermined point without setting
any adjunctive mechanism.
Sixth. To provide movable stops whereby the. knife is shifted in its travel
automatically, which objects are illustrated in the accompanying drawings in
which
Figure 1 is a front elevation of the machine, with dotted lines for the purpose of
showing my preferred method of belting.
Figure 2 is a plan view of the same.
Figure 3 is a cross section through the centre of the machine, the driving shaft
being shown in perspective; and
Figure 4 is a side elevation of the gauge or wing destined to illustrate more fully
the method of supporting the same at its lower portion.
Similar letters refer to similar parts throughout the several views.
A shows the framework of the machine, consisting of legs or supports, the same
constructed in any suitable form. B shows the bed or table which receives the
stock to be operated upon. E shows the top rail or slide way support which
supports the top side of the carriage that bears the cutting knives. C, C. shows
the cutting knives preferably set at an angle as shown, and securely attached to the
reciprocating head. D is the head which supports the knives and moves in ways,
the upper way being shown by D' and the lower way being shown by D². Attached
to and preferably integral with the lower way D' is the rack D³. The slide way E
has its ends formed in vertical faces that are fastened to similar faces on the bed 1
by means of bolts, the object being to allow for perpendicular adjustment of the
way E. The slideway G is made integral with the bed, the adjustment of E being

page_text: vertically in relation to the bed, so as to take up the wear of the knife head D
The slideway G is provided with an adjustable gib H. The object of the adjustable
gib is to take up the transverse wear of the head D by means of suitable screws
provided for that
purpose.
"
.
I' is a shaft upon which are supported three pulleys, to wit 12, 18 and I
I being the centre pulley and being fastened securely to the shaft, while the outside
pulleys and I are loose pulleys. 1 and 1 represent raceways which, with
adjunctive mechanism, constitute a shifter of common form adapted to throw the belt
from either loose pulley on to the tight pulley, or vice-versa, according to the motion of
the head. The cams or raceways I and 16 are attached by a link J to the upright
lever K, which lever is in turn pivotally fastened at its upper end to the
horizontal reciprocating bar L, while its lower end is pivoted to the frame A of the
machine. The lug or dog M is fastened to or made integral with the head D. To
the reciprocating bar L are attached. two adjustable stops N, 'N. and also two
handles 0-0 are attached thereto. Said bar L has a reciprocal motion, and
suitable boxes or bearings P, P, which are integral with or attached to the slide-
way E. Two stops QQ are located on the bar L and are adapted to determine
the latitude of adjustment of the stops N, N, and thereby the utmost limit of the
travel of the head D. The motion of the knife head Ď may be arrested at any
point less than the limit of movement of the plane of the knife travel automatically
by the proper adjustment of the stops N-N, or by shifting the bar L by hand,
thereby providing two methods of adjustment.
The gauges or wings R, R which support the work against the thrust of the knife
are so pivoted as to retain their inner edge substantially in a plane with the travel
of the knives' edge, thereby insuring a shear cut between the moving knife and the
operating edge of the gauge. To secure this result, the lug R' (see Fig. 4) is made
with an inwardly projecting arm, and integral therewith a perpendicular section
as R' which unites with the main body of the wing R, thereby forming a recess into
which the portion of the bed marked B is fitted, the slots Z in the main bed B being
formed in a curve so as to admit the section R2 to be readily moved therein. The
adjustable gauges or stops S. S, for supporting the stock against the thrust of the
knife are fastened in a slot S2 in the bed B by any suitable means. The inner face
of each of these stops S may be set opposite to the degree line marked on the bed B.
The moving of the wing R against them determines the angle desired.
By this construction I have done away with the disadvantage of a separate
projecting piece or link and greatly simplified the construction over older mechanism.
The wing R is bevelled or brought to a point opposite to the face of the knife, which
allows it to be thrown around for a total angle of one hundred and thirty five degrees,
or even more, if desired.
The operation of my invention is as follows:-The driving belt running on
pulley I and the driving belt running on I travel in opposite directions; the one
belt being an open belt and the other a cross belt, let the head D be first started in
its travel by the operator pushing on one of the handles O; O; this sets the head in
motion, and it continues under motion until the dog or lug M engages with one of
the stops N, when the bar L is shifted, and through its pivotal connection with the
upright lever K, already described, the connecting link J actuates the belt shifting
mechanism, cam 15 and 1° so as to shift the driving belt off from the tight pulley,
and thereby causing the knife head to stop its work. The stock is now adjusted'so
that the knife may take a further clip off of the end of the same.
The operator
again pushes the handle O and the knife is moved by the operation of the machine
in the opposite direction and against the opposite wing, when as many cuts may be
taken from either side as may be desired.
I have shown my preferred form of shifting the belt, but other well known
mechanical equivalents may be used for that purpose without departing from the
spirit of my invention. It will be noticed that the shaft 11 is connected by means
of a pinion D' and the large crown wheel D' and small pinion D and rack D' with
the knife bead D, which makes the connecting mechanism from the shaft to the

page_text: reciprocating knife, but other well known mechanical means may be employed for
making the connection.
The stock to be operated upon may be held on the table and fed up to the knives
by-hand or by any suitable machinery.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:-
1. In a cutting shapeing and trimming machine, the combination of a reciprocating
knife, ways in which said knife are supported, a head supporting the knives, suitable
mechanism connecting said head with the power for operating the same and means
for starting and stopping the motion of said reciprocating knives, substantially as
described.
2. In a power cutting shapeing and trimming machine, the combination of a bed
adapted to receive the stock, reciprocating knives, wings or gauges adapted to
support the stock against the thrust of the knife, a head supporting said knives
moving in ways, suitable power for driving said reciprocating knife and suitable
mechanism connecting said power supporting the head, substantially as described.
3. In combination with reciprocating knives, a head supporting the knives, ways
in which such head are moved, a bed adapted to support the stock to be operated
upon, adjustable gauges, each having its supporting edge in a line substantially in
the plane of the travel of the knife, a shaft supporting pulleys through which it is
operated, a connection between the shaft and the head supporting the knives for
giving the reciprocating movement thereto, and a shifting mechanism whereby the
belts conveying the power may be so shifted as to move the knives in either direction,
substantially as described.
4. In combination with the reciprocating knives, a head supporting said knives
moving in ways, an adjustable wing or gauge supported adjacent to the plane of
travel of the knife, a supporting bed or table having a circular slot therein struck
on the radius of the gauge, and an adjustable stop moving in said groove with
suitable mechanism for adjusting said stop at any required point within the groove
thereby controlling or limiting the motion of the gauge, substantially as described.
Dated this 6th day of November 1894.
HERBERT HADDAN & Co.,
18, Buckingham Street, London, W.C., Agents to Applicant.