Year: 1890

page_text: pulleys a. On this shaft in the double machine are set cams which operate levers
which actuate the clamps and cutters longitudinally as hereinafter described. On
the top of the frame and projecting above the same are uprights in which are
journaled the shafts D) which carry the cutter heads. These shafts are hollow as
shown Fig. 5 and have a longitudinal sliding movement in their bearings to
permit of the revolving cutters being made to approach or recede from the board
or plank which is being cut. On these cutter shafts are mounted belt pulleys E
by which the shafts are driven, either from the main shaft as in the single machine,
Figs. 12 and 13, or independently thereof from an outside source as in that form of
the machine shown Figs. 1, 2 and 3 and which I deem the preferable form. In
the machine shown Figs. 12 and 13 these cutter shafts are actuated from the main
shaft C by means of a belt which passes over the driving pulley D. Inside the
hollow cutter shafts D are mounted longitudinally sliding rods.d, the proximate
ends of which are provided with clamps which are thus mounted centrally of
the cutter heads as shown Fig. 5, the outer ends of the rod d being mounted in
bearings in the upper ends of the uprights so as to slide longitudinally therein.
The cutter heads are set opposite each other in the centre of the machine as shown
Figs. 1 and 2 and are screwed or otherwise suitably secured to the proximate ends of
the cutter head shafts D or they may be integral therewith as shown, the clamps
being only a sufficient distance apart to admit of the thickest boards or planks which
are used being placed and fed forward between them. In the single form of
machine shown Figs. 12 and 13 the plank or board is seized and securely clamped
between the movable clamp and the stationary clamp. When the wood is in
position between the clamps they are caused to approach each other in order to hold
it firmly in place. To effect this, one of the clamp rods dis moved longitudinally
by means of a lever which is pivoted centrally at in the frame and the upper
end of which is forked and pivoted to a collar which is loose on the rod d. The
lower end of the lever j is provided with a cam truck or stud which travels in a cam
path in the periphery of the cam wheel m. As the movement of the lever j is
positive, while the length of longitudinal movement of the clamp must vary with
the thickness of the wood which is being cut, a spiral spring n encircling the rod d
is placed in front of the collar 1 between said collar and another collar p fast on said
rod. This spring permits the clamp to yield and takes up the extra movement of the
lever j. In the double machine, such as is shown Fig. 1, the opposing clamp may be
similarly arranged or it may, as shown in said figure, have its foot seated against an
adjusting screw a so that the clamp may be adjusted relatively to the cutters by
moving it toward or from the opposing clamp and thus the clamps be made to exert
greater or less pressure in holding the wood. Similar means are provided to move
the cutter shafts longitudinally, each shaft being actuated by a lever pivoted
centrally in the frame at s, the upper ends of said levers being forked and provided
with pins t which travel in a groove in the periphery of a collar fast on the outer
end of the cutter shaft, as will be clear on reference to Fig. 5. The lower ends of
said levers are provided with cam pins or trucks which co-operate with cam
wheels w fast on the shaft C. In the single machine, Fig. 12, these cams are fast on
the secondary or counter shaft E which is connected with the main shaft by means
of a train of gears shown at f³, Figs. 12 and 13. It will be clear that at each
revolution of the shaft C of the double machine or the shaft E' of the single machine
the clamps will be caused to approach each other and clamp the wood while the
cutters will also be caused to approach and pass into the wood and cut the disc there-
from. The precise form and size of the clamps may of course be varied.
The mechanism for supporting and feeding the plank or board as it is being cut is
preferably constructed in the form shown in connection with the double machine,
Figs. 1, 2 and 3, although this form of feed mechanism may be dispensed with and
the simple contrivance shown Fig. 13 may be employed. I will first describe the
feeding mechanism of the double machine: A vertical frame comprising a piece b¹,
and an upper horizontal piece al and vertical rods c',.is adjustably clamped by means
of screw bolts d' which pass through slots in the piece b¹ to the projection B which

page_text: extends from the frame of the machine, see Figs. 2, 3 and 7. The piece is of the
angle iron shape in cross section, shown Fig. 7. The top piece a¹ of this frame,
as I have termed it, is provided at either end with a projection, see Fig. 2, by
means of which it is secured to the top of the uprights which rise from the
horizontal piece. This latter piece forms the top of the slideway in which the
carrier which carries the feed dog slides. The piece rests at either end on
blocks a³, one of which is shown at the right of Fig. 3, and is bolted through these
blocks to the horizontal piece which forms the bottom or lower side of the slide-
way for the feed dog carrier. The piece is substantially of angle iron shape
in cross section, as will be clear from. Fig. 1, and it rests on uprights or vertical
pieces, which are a part of what I have termed the frame B and which are
stationary. The lower edge of the piece 3 rests on a bracket or small projection ³
see Fig. 1, which is on the upright and which serves to support the piece 63,
and also as a base on which the piece 3 may slide when it is desired to move
the vertical frame horizontally. For the purpose of clamping the piece 63 securely
to the upright ³, said piece is slotted horizontally to receive bolts which pass
through said slots into the piece 3. The head of one of said bolts is shown
at Fig. 1. A series of rolls are mounted in the vertical feed frame, the
upper end of said rolls being journaled in the cross piece a¹ and the lower end in
the piece. These rolls revolve as the plank comes in contact with them in
being fed forward to the cutters. What I have termed the vertical frame which
is movable relatively to the stationary frame B, comprises the parts b', the vertical
rods and rolls f, the cross piece a', the uprights g' and the slideway formed of
the horizontal pieces 1, 3 and the blocks a³, which are placed between these pieces.
This vertical frame is normally clamped rigidly to the stationary frame B by means
of the clamping bolts d' which pass through slots in the horizontal piece band
the bolts do which pass through similar slots in the piece 3. By loosening these
bolts it will be clear that the vertical frame may be moved horizontally and set in
any desired position. The feed dog carrier is arranged to slide in the slideway
formed between the pieces and 3 and it carries the feed dog k¹ which is pivoted
by a vertical pivot therein, the rear end of said dog being secured by a ball and
socket joint to a connecting rod m¹ as shown at 1, Fig. 6. The connecting rod m
is pivoted to the upper end of a lever n', said lever being pivoted at its lower end
at to a point near the foot of the frame B, as shown Fig. 3. By means of a series
of holes in the connecting rod m' some of which are shown Fig. 3, the length of
movement of the dog may be changed as will be clear. The lever is recipro-
cated by means of a connecting rod pl which is pivoted at one end in the curved
slot q in the said lever n' and at the other end to à lever which is pivoted at its
upper end to a lug on the frame of the machine, shown at s¹, Fig. 4. The lever l
is provided about midway of its length with a cam truck t' which co-operates with a
cam w in the face of the cam wheel a² which is set on the shaft C. By raising or
lowering the connecting rod in the slot q' of the lever the length of throw of
the lever and, consequently, the length of movement of the dog may be varied.
The mechanism, as shown Fig. 3, is set to produce disks of the largest size, that is,
the feed dog is adjusted to the longest range of movement. It will be clear that the
feed dog must feed the wood forward at each feed movement at least a distance
equal to the diameter of the disk which is cut and the movement of the dog may be
adjusted for this purpose accurately by changing the position of the connecting rod pl
in the slot as heretofore described. The dog is provided with one or more
teeth ² and is so pivoted as shown Fig. 6 that the first movement of the dog, when
acted upon by the connecting rod m¹, is to swing slightly on its pivot, thus causing
the teeth of the dog to be forced into the plank if the movement of the connecting
rod m¹ be in one direction or withdrawn from the plank if said movement be in the
opposite direction. The subsequent movement of the rod m³ acts to move the dog
and its carrier in the carrier slideway. To limit the movement of the dog on its
pivot, screw stops e², see Fig. 6, are set in either end of the sliding frame or carrier j
which carries the dog. By setting in these screws, the swing of the dog on its pivot

page_text: and, consequently, the bite of its teeth in the wood may be lessened, as will be clear
As it is preferable in feeding the plank or board forward that the dog should come
in contact with it centrally, that is, midway of the width of the plank, the carrier j
and its slideway are placed in line with the centre of the cutter heads and thus
whatever the diameter of the cutter head and whatever the width of the plank or
board, the dog will seize the plank or board centrally in feeding it to the cutters.
When comparatively small disks are to be cut, much narrower, stock may be used
and it thus becomes desirable that the rollway upon which the plank is supported
, while it is in the vertical frame which I have heretofore described, should be capable
of vertical adjustment. This is obtained as follows: The roliway or support for the
wood upon which the lower edge thereof rests, consists of a piece d² provided with
anti-friction rolls, and set horizontally between the vertical rolls f and the stationary
part heretofore described. This horizontal piece d³ is secured at either end to
blocks which slide in the vertical slots f² formed in the stationary upright part of
the frame B, see Figs. 3 and 7. To the rear faces of these blocks, as the machine is
viewed Fig. 3, are secured the racks 2. see Figs. 1 and 7, which mesh with the
pinions which are fast at either end of a shaft which is journaled in supports k
which project from the frame B and one of which is indicated in dotted lines, Fig. 7.
Underneath one of the gears 2 and in mesh therewith is a worm which is mounted
in a projection, as shown Fig. 7, and which is provided with a hand wheel m² by
means of which said worm may be turned. By turning the worm the gears are
.caused to revolve, raising or lowering the racks g² and thus raising or lowering the
rollway d². I have said that the follway d² was secured to blocks to the other side of
which the racks g² were secured. In reality, these blocks may be simply the upper
portion of the racks g² enlarged and may be integral therewith. By means of this
mechanism the rollway d2 upon which the bottom of the plank or board rests, may
be raised to accommodate planks of less width. By virtue, therefore, of the
adjustability of the vertical frame horizontally toward and from the cutters and of
the rollway vertically toward and from the feed dog, planks of various widths may
be accommodated and disks of various diameters cut without loss or waste of wood.
In the single machine the feeding device employed and which is shown Figs. 12
and 13 is of simpler construction. In said figs. the plank or board is shown at H³
and is supported on a horizontal arm or support n which is fast to the upright
portion of the stationary clamp e. To move the board forward as required, a
weight wis secured to a cord 'o which is made fast to the rear end of the board
by means of a hook or similar device and passes over sheaves so located that
the weight will tend to move the board forward when it is not clamped and when
'the stop lever is thrown back out of its path. The stop lever is pivoted on
a stud projecting from the frame (see Fig. 18) and is bent at its upper end as
shown at , Fig. 12, in order that it may project into the path of the board and
thus stop the board when it has been moved forward a sufficient distance by the
action of the weight and hold the board until it is clamped by the clamping device.
The lever projects downwardly as shown and is provided at its lower end with
a cam roll which engages with a throw cam on one face of the can wheel to on
the shaft E. A spring us is secured to the lever and to a projection on the
frame and acts to hold the lower end of the lever against its cam. As the cam
revolves, it will be clear that the upper end of the lever will be thrown at one
point in the revolution of the cam into the path of the board H and will, at other
times, be moved out of the path of said board. The cam which operates the lever d
is so timed that the lever will be out of the path of the board when the board is not
clamped and when it is free to be moved forward by the weight.
After a disk is cut, the waste drops clear of the machine and as soon as the clamps
are loosened, it is desirable that the disk should drop out of the machine. This is
insured, in the double machine, by the movement of the outer end of the rollway or
support which consists of a piece n², see Fig. 4, which is pivoted to the part d² at p²
and is connected by a pivoted connecting rod q with a lever 2 which is pivoted at
one end to a projection on the frame of the machine and is provided at the other end

page_text: with a cam truck which bears on a cam 2 formed on the periphery of the hub of the
cam wheel a². As the cam revolves with the shaft C the piece on to which the
disk falls when the clamps are loosened is dropped down into the inclined position
shown Fig. 4, and the disk rolls therefrom into a convenient chute or receptacle and
is discharged from the machine. As soon as the disc clears the piece n³, the cam acts
to raise the piece again to a horizontal position. In the single-machine this dis-
charging device is modified in form and is constructed as follows: A chuto at which
is secured to an arm on the frame of the machine, is provided to receive the formed
disks as they drop from the clamps. The upper portion of the chute a is pivoted to
the lower portion at 1, see Fig. 12, and. is secured as shown at d to the upper end of
a lever which is pivoted in a frame and the lower end of which is provided with a
cam roll which engages with a cam g on the face of the cam roll t. The lever fis
held in engagement with its said cam by means of the spiral spring h³ which is fast
to the upper end of the lever and to one of the uprights. By means of this
mechanism, the upper portion of the chute a is in position to receive the disk which
has been formed by the machine when it drops from the clamps at the next. forward
movement of the board. As soon as the disk is discharged, the upper portion of the
chute a' is swung out of the way, where it remains until after the waste pieces which
are formed in cutting the succeeding disk have dropped out of the way.
Those portions of the machine in which the cutting tools are secured I have
denominated cutter heads. They are preferably circular as shown Figs. 8, 9 and 10.
The precise shape of these heads or the method of securing the cutting tools therein
is not important and it will be clear that the number and shape of the cutting tools
is also not important, but will depend upon the disk to be cut. My method of
securing the knives in the head is as follows: An aperture is cut transversely through
the head at the point where a cutting tool is to be placed, the inner face or wall of the
aperture being beveled somewhat as shown at 13, Fig. 9. The shank of the tool is
inserted in the aperture and secured by a retaining wedge m³ which is forced in from
the back of the cutter-head by means of a screw p, having an annular groove in its
head to receive a projection or offset from the thick end of the wedge as shown in said
Fig. 9. The wedge may be forced inwardly and firmly held in and prevented from
loosening when the machine is in operation by means of the said screw p².
In cutting a plain disk from a board, cutting tools of the shape shown at a, Fig. 11,
may be employed, and for beveling the face of the disk at the periphery a tool of the
forin shown at 6' may be employed.
The operation of the machine is as follows: The wood having been placed between
the clamps and in position to be fed forward by the feeding mechanism, the clamps
approach and seize it. The cutters at the same time approach the wood but slightly
behind the clamps so that the wood is first clamped. After the clamps seize the wood
they remain stationary and the cutters, continuing their movement, pass through the
wood, cutting out a disk, after which, they move back, followed in their backward
movement by the clamps, freeing the disk which is discharged from the machine, and
allowing the feeding device to move the wood forward until it is again between the
clamps and into position for the succeeding disk to be cut.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by my
foreign correspondents, I declare that what I claim is:
1. A wood working machine having two rotary cutter beads and two longitudinally
movable shafts on which said cutter heads are mounted, a non-rotary clamp, a
longitudinally movable shaft therefor, an opposing normally stationary clamp, a
non-rotary shaft therefor which is normally stationary and an adjusting screw for
said shaft, whereby the position of said stationary clamp may be varied to adjust the
clamps for different thicknesses of work, substantially as shown and described.
2. In a wood working machine the combination with cutting mechanism of a
frame for supporting and guiding the wood, said frame being adjustably secured

page_text: to the frame of the machine and being adjustable towards and from the cutting
mechanism, whereby the wood-supporting frame may be adjusted towards and from
said cutting mechanism to adapt the machine for different classes of work, substantially
as shown and described.
3. In a wood working machine, the combination of duplicate clamping and
cutting mechanism arranged to act simultaneously on both sides of the wood, with
supporting and feeding mechanism consisting of a horizontal frame for holding the
wood in position and a horizontally reciprocating feed-dog, whereby the wood is
securely held while the disk is being cut and is, then fed forward to bring a new
portion of the wood into position between the cutters.
4. In a wood working machine, the combination with two rotary cutter-heads
movable towards and from each other and clamps for holding the said work for
the said cutter-heads to operate upon, of a holding and guiding frame for the wood
having a guideway central of the said cutters, a vertically adjustable support d² on
which the wood is fed to the cutting and clamping mechanism, and a horizontally
reciprocating feed-dog for advancing the work to said mechanism; whereby strips
of wood of various widths may be supported and fed centrally in line with the
cutters.
5. In a wood working machine, the combination with a guiding frame for the
wood, of a feed-dog carrier, a feed-dog pivoted to said carrier and provided with
one or more teeth forward of its pivotal point, and a reciprocating rod m' to which
the outer end of said feed-dog is pivotally attached; whereby as the said red is
moved forward or backward said feed-dog is first turned on the pivot by which
it is attached to its carrier, to be engaged with or disengaged from the work,
and the said carrier and feed-dog are moved bodily forward or backward.
6. In a wood working machine, the combination with a wood supporting and
guiding frame, of a feed-dog carrier provided with regulating scrows c², a feed-dog
pivoted to said carrier between said screws and having one or more teeth forward
of its pivotal point, and a reciprocating rod m¹ to which the outer end of said feed-
dog is pivotally attached; whereby the feed-dog and its carrier may be reciprocated
and the rocking movement of the feed-dog on its pivotal point of attachment to its
carrier may be governed.
7. The combination with a wood supporting and guiding frame of a reciprocating
feed-dog co-operating therewith, a connecting rod carrying said feed-dog, a lever
adjustably connected at its upper end with said connecting rod and actuating
mechanism for said lever; whereby the path of movement of said feed-dog may be
changed.
S. The combination with a wood supporting and guiding frame of a reciprocating
feed-dog co-operating therewith, a connecting rod secured to said feed-dog and
adjustably connected with a lever, a connecting rod for operating said lever adjustably
secured thereto at one end and operating mechanism for said connecting rod; whereby
by adjusting said connecting rod relatively to said.lever the throw of the feed-dog may
be increased or diminished.
9. The combination with a wood supporting and guiding frame of a reciprocating
feed-dog co-operating therewith, the connecting rod m', the lever'n', the connecting
rod p, the lever and its actuating cam and the shaft C; whereby at each revolution
of the shaft the feed-dog is reciprocated.
10. In a wood working machine, the combination with duplicate rotary cutters and
a pair of clamps co-operating therewith, of a wood supporting and guiding frame
arranged to deliver the wood centrally of said cutters and clamps and having a bottom
piece d on which the wood is fed, said bottom piece being provided with the pivoted
piece n², the lever 12, the cam by which said lever is operated and the rod q²
connecting said lever with the said piece n².
11. In a wood working machine having a single cutter head, the combination with
the driving shaft C provided with pulley D, of the shaft E carrying a cam w, a set
of reducing gears connecting said shafts C and E³ the longitudinally movable shaft I)

page_text: carrying the cutter head, the groove pulley u, and the driving pulley E, and the
lever for imparting lengthwise movement to said shaft D from said cam 20,
substantially as set forth.
12. In a wood working machine having a single cutter head, the combination with
the driving shaft provided with the pulley D, of the shaft E³ provided with the
cams and m, a set of reducing gears connecting said shafts and E³, the longi-
tudinally movable hollow shaft. D provided with a grooved pulley u, a driving pulley E
and a cutter-head, the longitudinally movable clamp-carrying shaft or rod d, the
levers and for imparting longitudinal movements to said shafts D and d from said
cams and a stationary clamp co-operating with the movable clamp carried by the said
shaft or rod d, substantially as set forth.
13. In a wood working machine having a single cutter-head, the combination with
the driving shaft provided with the pulley D, of the shaft E provided with the
cams w and m, a set of reducing gears connecting said shafts C and E³, the longi-
tudinally movable hollow shaft D provided with the grooved pulley u, the driving
pulley E and the cutter-head, the longitudinally movable clamp-carrying shaft or
rod d, the levers and for imparting longitudinal movements to said shafts D and d
from said cams, a stationary clamp co-operating with the movable clamp carried by
the said shaft or rod d and feeding and stopping devices whereby the wood to be cut
is fed forward and stopped in position to be seized by the clamps, substantially as set
forth.
2"
14. In a wood working machine, the combination with the clamping and
cutting devices of a pivoted stop lever, said lever projecting, while in one
position, into the path of the wood which is fed into the machine and an actuating
cam engaging said lever, whereby, at one point in the movement of the cam, the
stop lever is thrown into the path of the wood, for the purposes and substantially as
described.
15. In a wood working machine, the combination with the clamping and cutting
devices of a chute, the upper portion of said chute being movable relatively to
the lower or stationary portion thereof, an actuating lever pivoted at one end
to the movable portion of said chute and at the other end engaging with a
cam, whereby the movable portion of said chute is moved into position to receive
a disk as it is discharged from the machine, substantially as shown and described.
16. In a wood working machine employing a single cutter-head, the combination
with the stationary clamp e' of the moving clamp, its shaft d, the actuating lever j
and its cam and the spring n, interposed between said shaft and said lever, whereby
the moving clamp is allowed to accommodate itself to wood of different thicknesses,
substantially as shown and described.
Dated this 29th day of July 1890.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.