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Патент USA US3093179

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June 11, 1963
|_. E. NICHOLS
3,093,169
FURNITURE FORMING MACHINES
Filed June 4, 1959
'7 Sheets-Sheet 1
O
Q
"3
FIG.1
LU THE/2
INVEN TOR.
E NICHOLS
BY
A TTORNEYS
June 11, 1963
3,093,169
L. E. NICHOLS
FURNITURE FORMING MACHINES
F'iled June 4, 1959
'7 Sheets-Sheet 2
IN VEN TOR.
LUTHER.
E. - NICHOLS
BY
' #77114;
A TTORNEYS
June 11, 1963
|_. E. NICHOLS
3,093,169
FURNITURE FORMING MACHINES
Filed June 4, 1959
'7 Sheets-Sheet 3
INVENTOR
LUTHER. E NICHOLS
ATTORNEYS
June 11, 1963
|_. E. NICHOLS
3,093,159
FURNITURE FORMING MACHINES
Filed June 4, 1959
7 Sheets-Sheet 4
FIG. 5
INVENTOR
LUTHER E_ NICHOLS
BY MVLWWKA”
ATTORNEYS
June 11, 1963
1.. E. NICHOLS
3,093,159
FURNITURE FORMING MACHINES
Filed June 4, 1959
7 Sheets-Sheet 5
F I G' 7
INVENTOR
LUTHER E NICHOLS,
‘BY M +17?”
‘'
ATTORNEYS
June 11, 1963
3,093,169
|_. E. NICHOLS
FURNITURE FORMING MACHINES
Filed June 4, 1959
7 Sheets-Sheet 6
FIG. 8
INVENTOR.
LU77-IER E. NICHOLS
BY
ATTORNEYS
June 11, 1963
3,093,169
L. E. NICHOLS
FURNITURE FORMING MACHINES
Filed June 4, 1959
'7 Sheets-Sheet 7
FIG. II
SOLENOID
FIG. [2
INVENTOR.
LUTHER
E. NICHOLS
BY
ATTORNEYS
United States Patent 0
3,093,169
Patented June 11, 1963
2
1
surface thereof adjacent, but spaced from, the lower edge
3,993,169
Luther E. Nichols, Morristown, Tenn, assignor to Waiters
FURNITURE FORMING MACHINES
Mfg. Company, Morristown, Tenn, a corporation of
Tennessee
to receive the bottom panel of the drawer. Very often
it is desirable to space the bottom panel at different dis
tances from the lower edge in several of the drawers. It
is important, accordingly, that the drawer front be grooved
the desired preset distance from the bottom edge and that
Filed June 4, 1959, Ser. No. 818,143
5 Claims. (Cl. 144-41)
the grooving be accomplished throughout the desired
length of each drawer front, regardless of the contour
thereof, which can be accomplished automatically in
This invention relates to improvements in furniture
forming machines, and more particularly to ripping and 10 the construction of this machine.
In ripping a single panel into several sections for
grooving machines used for making furniture fronts, such
as drawer fronts.
In forming sections of an article of furniture from a
single sheet of material, such as plywood, it is desirable
that the sections be so cut that they will form a uniform
pattern extending over the composite surface.
Thus,
drawer fronts or other purposes, it is often desirable
that one or both opposite edges of each section be shaped
as required for the proper ?tting of the several strips, as
well as the desired appearance thereof. These operations
can be accomplished automatically during the passage
furniture, it is desirable that all of these be of matching
of the panel and successive strips through the machine.
The machine is capable of being preset, according to
grain, so as to provide the desired appearance to the
the requirements desired, so as to shift all parts thereof
in forming a series of drawer fronts for an article of
20 automatically to accomplish the desired results. After
?nished article.
setting the controls of the machine, it is only necessary
Articles of furniture vary considerably in their ex
for the operator to feed the panel through the machine
ternal shape. For example, ‘a series of drawers may be
successively, starting from one edge thereof, and the
made with the surface thereof either ?at, concave, convex,
machine will automatically perform the needed and de
or serpentine. These several contours may .be formed in
the sheet before the latter is cut into the respective widths 25 sired actions on the panel, without requiring the shifting
of the panel to successive machines and with no danger
for the several drawer fronts or other sections of the
or possibility of confusion as a result of mismatching
article of furniture. Not only must the composite sheet
of the sets of strips formed from the panel.
be cut into the desired widths, but grooves must be formed
This embodiment ‘of the invention is set forth in the
in the respective sections or fronts to receive the bottom
sections of drawers, and it is often desirable to shape 30 accompanying drawings, in which:
FIG. 1 is a top plan view of the complete machine;
the upper and/or lower edges of the respective fronts
FIG. 2 is a longitudinal section therethrough on the
to provide desired shape and ornamentation thereto.
line 2—2 in FIG. 1, with certain-parts broken away;
These separate operations usually have required several
FIG. 3 is a longitudinal section therethrough on the
different machines in order to accomplish the ripping,
35 line 3-3 in FIG. 1;
grooving and shaping actions desired.
FIG. 4 is a detail side elevation of the scoring head
The practice of running a single strip of material
assembly;
through several machines not only increases the labor re
FIG. 5 is a bottom plan view thereof;
quirements, but it also leads to the possibility of error
FIG. 6 is a top plan view of the grooving head as
resulting in unmatched sets. Moreover, different ma
chines are often needed to operate on different types of
sembly;
FIG. 7 is a side elevation thereof;
materials, ‘such as ?at, serpentine, etc., thus requiring an
FIG. 8 is a detail horizontal section showing the stop
abnormally large number of machines to perform the
control device in plan;
needed operations on the various types of materials
FIG. 9 is a side elevation thereof, partly in section;
customarily encountered in 1a furniture factory.
FIG. 10 is a cross section therethrough on the line
One object of this invention is to overcome the ob 45
10—10 in FIG. 9;
jections heretofore noted and to improve the construc
FIG. 11 is a perspective view of the rotor and switch
tion and operation of forming machines for articles of
assembly; and
furniture.
FIG. 12 is a diagrammatic view of the control sys
Another object of the invention is to provide a single
machine which will perform all of the needed operations 50 tem.
The invention will be ‘described in connection with
in making a set of furniture pieces, such as drawer fronts,
drawer fronts, which can be formed in numbers from one
by ripping a panel into desired widths, grooving each
to four, that are cut from a single panel or sheet of
width at a preset distance from the bottom edge, if de
suitable material, such as veneered wood, to provide a
sired, and shaping either the top or bottom edge of each
section, or both, according to the requirements encoun 55 matched set of drawer fronts. It is recognized, however,
tered.
Still another object of the invention is to provide for
the automatic sequence of the steps needed in a machine
for ripping and forming a series of sections or drawer
fronts formed from a single panel, such as a section of
that the invention is not limited to this one application,
but may be used wherever it is desired to rip a plurality
of sections or strips from a single sheet or board. For
example, it may be used in forming table tops.
The operating ‘parts of the machine are supported by a
veneered material.
These objects may be accomplished according to one
embodiment of the invention, by providing a single ma
chine which will perform the work of several different
suitable frame structure, comprising upright columns 1
connected together by opposite horizontal side beams 2
machine and ripped into sections of desired widths, either
between the side beams 2. The upright columns 1 may
be connected together intermediate their height as by a
and by end beams 3 forming a surrounding framework
at the top. A longitudinal intermediate beam or fence is
machines. A sheet of suitable material or panel of any 65 shown at 4 extending between the end beams 3, and a suit
desired contour or shape may be moved through the
able number of cross beams are indicated at 5 that extend
the same or of varying widths. In making drawer fronts,
for example, it is often desired that a set of these be
surrounding frame structure, generally indicated at 6
formed of different widths, which will be accomplished 70 (FIG. 2). These parts may be welded or otherwise se
automatically :as the panel is moved through the machine.
cured in rigid relation to each other. Moreover, an
Each drawer front is provided with a groove in the
open framework is shown for clearness of illustration,
3,093,169
4
3
although enclosing panels may be used thereon, if de
sired, to cover and protect the operating parts of the
machine.
A top plate is indicated at 7, which preferably extends
frame 10 carrying the rip saw 8. A ball 27 mounted
in a conventional socket 28 (FIG. 2) carried by the frame
10 permits the frame 10 to rest against the rail 26 while
over substantially the entire upper portion of the frame
at the same time allowing longitudinal movement between
the frame 10 and the rail 26. The mounting structure
structure as a supporting surface for the panel or sheet
for the socket 23 preferably is an adjustable one so that
to be moved through the machine.
‘Of course, openings
of suitable shapes will be provided in the plate 7 in those
areas where cutter elements must pass through the plate
the distance between the frame 10 and the rail 26 may
be regulated by manipulation of a hand wheel 29. Struc
tures of this type are well known in the art and need not
7 in order to accomplish their intended functions. 10 be described in detail herein.
When a contoured strip S is fed through the machine,
Usually, a sheet or panel of veneered wood will be
the guide roller 14 will rise and fall in accordance with
moved through the machine along the plate 7 so that
the contours it encounters. This will cause the frame 15
the several operations may be performed thereon. This
sheet is illustrated at S in several views of the drawings. 15 for the guide roller 14 to swing about the axis of the
shaft 20 to rotate the shaft 20 and cause a corresponding
The fence 4 serves as a guide against which one edge of
swinging movement of the lifting frame 25 ?xed to the
the moving panel or sheet may bear as it moves through
shaft 20. When the frame 25 swings so that its rail 26
the machine.
moves upwardly, the ball 27 also will move upwardly
The initial operation is to sever the sheet or panel S
and the frame 10 carrying the rip saw 8 will swing about
into desired widths. This is performed by a rip saw, 20 the axis of the shaft 20 so as to elevate the saw 8. By
generally indicated at 8, mounted on a shaft 9, jour
causing the saw 8 to rise and 'fall in accordance with
naled in one end of a swinging frame or support 10.
the contours of the strip S, e?icient ripping action all
The shaft 9 is driven through belts 11 from a motor 12,
along the length of the strip S is assured.
suspended from the frame 10 and adjustable to vary the
If a particular operation should not require the sever
tension of the belts 11 by a hand screw, generally indi 25 ance of the panel S, the rip saw 8 may be inactivated
cated at 13. The motor 12 is heavy, and, in order to
easily and quickly. All that need be done is to rotate the
minimize the load on the parts, the weight of the motor
hand wheel 29 so as to greatly reduce the space between
12 is partially counterbalanced by a booster cylinder
the saw support 10 and the ball 27 resting upon the rail
16 attached to the frame of the machine and to the sup
26.
This allows the saw support 10 to swing downwardly
30
port for the motor 12.
about the shaft 20 far enough to remove the saw 8 from
The frame 10 is provided with a hub portion 19 piv
‘the level of the moving strip S.
otally mounted upon a shaft 20 extending transversely
The block structure 24 adjacent the hub portion 19
of the machine near one end thereof.
The hub por
of the frame 10 is provided with a control arm 30 ex
tion 19 of the frame 10 may swing freely relative to the
tending approximately horizontally to a stop device, illus
shaft 20, and it also may slide lengthwise of the shaft 35 trated more fully in FIGS. 8 to -10. This stop device is
20 so that the cutting position of the rip saw 8 may be
supported by an end wall or beam '3 of the machine and
varied to provide for different widths of material. This
comprises parallel crank shafts 32, 33, 34, ‘and 35 each
transverse movement of the frame 10 is brought about
‘adapted to receive a hand crank 36 on the outer end
by a pneumatic cylinder 21 mounted on the frame of the 40 thereof for manual rotary adjustment of the shaft. The
machine. A piston rod 22 protrudes from the inner
hand crank 36 is provided with a detachable coupling 37
end of the pneumatic cylinder 21 and is connected by a
of conventional construction so that it may be applied
bracket 23 to a block structure 24 slidably and rotatably
selectively to any ‘One of the shafts 32-35, as desired.
mounted upon the shaft 20 in position to contact the
These several shafts are mounted for rotation in brackets
ends of the hub portion .19 of the frame 10. The ar 45 '38 ‘and 40 secured to the end wall of beam 3 of the ma
rangement is such that the hub portion 19 and the block
chine, and the major portions of their lengths are threaded.
structure 24 must move together lengthwise of the shaft,
Four stops are provided at 41, 42, 43 and 44, threaded,
but each is free to rotate independently about the shaft 20.
respectively, on ‘the shafts 32, 33, 34 and 35. The stop
41 is a vertically extending block member disposed in
It will be understood, of course, that the width of the
drawer front, or other article being formed in the ma 50 the plane of the adjustment shafts 32 and 33. The stop
4-1 is threadedly connected to the upper shaft 32, ‘as sug
chine, corresponds to the distance between the rip saw
gested by the numeral 45‘ in FIG. 9‘, and it is provided
8 and the fence or guide '4. The fence 4- provides a
with an enlarged opening 46 loosely surrounding the
straight wall along which one edge of the sheet or panel
lower shaft 33. Thus, the stop 41 must move axially
‘being cut may be fed as the panel is brought into co
operative relationship with respect to the various ele 55 along the shaft 32 when the shaft 32 is rotated by the
manipulation of the hand crank 36. In moving longitudi
ments of the machine. When the cylinder 21 is actu
nally of the screw shaft 32, the stop 41 is maintained in a
ated so as to move the frame 10 carrying the rip saw 8
vertical position by its association with the lower shaft
closer to the rail 4, the width of the drawer front or the
33. It should be noted particularly that rotation of the
like is reduced, and when the frame 10 is moved in the
opposite direction, the width of the drawer front is in 60 screw shaft 33 has no effect whatever upon the position of
the stop ‘41.
creased.
The stop 42 is mounted in a manner similar to that just
In order that the rip saw 8 may follow the contours
described
in connection 'with the stop 41. In this case,
of the sheet or panel S, the frame 10' is caused to swing
however, the stop 42 is threadedly connected to the lower
about the shaft 20 in response to vertical movements
shaft 33 and is guided by the upper shaft 32. Longi
of a guide roller 14 located in approximately the same
tudinal
movement of the stop 42 is, therefore, brought
transverse plane as the rip saw 8. The guide roller 14
about by rotation of the shaft 33.
is mounted for rotation upon a frame 15 which is ?xed
The stop 43 is threadedly connected to the shaft 34
to an end portion of the shaft 20. The frame 15 ro
and is slidable ‘along a stationary guide bar 47. As shown
tates with the shaft 20, and also moves axially with the 70 best in FIG. 10, the guide bar 47 prevents rotation of the
shaft 20 for a purpose which will be described in detail
stop 43, so that rotation of the shaft 34 will cause longi
below.
tudinal movement of the stop 43.
Also ?xed to the shaft 20 for rotation therewith is a
The remaining one of the stops illustrated in the draw
framework designated generally by the numeral 25, hav
ing a horizontal rail portion 26 disposed beneath the
ings, that is, the stop designated by the numeral 44, is
mounted in a manner similar to that described in connec~
3,093,169
5
6
tion with the stop ‘43; The stop 44 is threadedly con
44 as the block 24 is moved transversely by the cylinder
nected to the crank shaft 35, and it is slidable along a
guide bar 48. ‘It will be observed that both of the stops
43 and. 44 are provided with inclined abutment surfaces
49 in position to contact inclined abutment surfaces 50 on
21.
The ?nal position of the rip saw v8 is that in which the
arm 30 contacts the innermost stop '41. The arm may be
positioned against the stop 41 by actuating the cylinder
the arm 30.
51 in such a way as to free the arm 30 from engagement
arm 30 in a vertical direction so as to disengage it from
be varied when desired by changing the control settings
with the stop 44. Then the arm 30 will move under the
vIn order for the arm 30 to cooperate with the inter
in?uence of the cylinder 21 as far as is permitted by the
mediate stops 43 and ‘44, it must be urged either upwardly
stop 41.
or downwardly. Otherwise, the inclined abutment sur
-Lt will be understood, of course, that this sequence may
faces 49 would exert a wedging effect tending to shift the 10
the appropriate stop 42 or 43*. In the illustrated embodi
ment of the invention, the necessary bias for the arm 30
is provided by a pneumatic cylinder 51 (FIGS. 2, 3 and
10). The lower end of the cylinder 51 is connected
and by changing the shape of one or more of the stops.
It will be seen that the structure and coaction between
the several parts of the mechanism is ideally suited to
15 automatic control.
‘It is a feature of the invention that
an entire cycle of operations may be set up for repetitive
pivotally to a frame 52. The frame 52 depends from the
operations, such as those involved in the making of
framework 10 and serves to support the drive motor 12
drawer fronts. If, for example, a given article of furni
for the rip saw 8. The piston rod 53'of the cylinder 51
ture requires drawer fronts of four different widths, these
is in turn pivotally conneoted to a bracket member 54
‘attached rigidly to the block structure 24 on the shaft 20. 20 widths may be established beforehand by rotating the
crank shafts 32, 33, 34 and 35, so as to position the
When pressure is applied to the cylinder 51 in a direc
several stops 4-1, 42, 43 and 44, in the desired manner.
tion tending to move the piston rod 53 outwardly, the
Thereafter, no further adjustments are required unless
block 24 will be rotated in a clockwise direction, as viewed
a different type of article is to be produced. The machine
in FIG. 10, to move the outer end portion of the control
arm 30 upwardly. The extent of this motion will be de 25 will go through a repetitive cycle of four different widths
of cuts automatically.
termined by the position of a stationary bar 55 fixed to
In the illustrated embodiment of the invention, the rip
the end rail '3 of the machine frame.
saw '8 makes a right angular cut with respect to the sheet
Similarly, when pressure is applied to the cylinder 51. in
or panel being fed through the machine. However, it
such a direction as to cause the piston rod 53 to retract, the
block structure 24 will swing in a counterclockwise direc 30 will be apparent to persons skilled in the art that different
types of cuts may be produced if desired. For example,
tion to bring the outer end portion of the control arm 30
a tilting arrangement may be provided for the rip saw 8
into engagement with a stationary bar 56 ?xed rigidly to
so that it may cut at an angle other than a right angle.
the end rail 3 of the machine frame. The locations of the
Moreover, other cutting or shaping devices may be
bars 55 and 56 are such that the abutment surfaces 51} of
the arm 30 will be ‘at the proper level for coaction with 35 a?ixed to the shaft 9 for the rip saw 8, if it is desired to
produce some particular shaping operation along the
the abutment surfaces 49 on the stops 43 and 44 when
outer edge of the strip being cut. Lips frequently are
formed on drawer fronts, and these may be produced by
Yet another characteristic of the construction just de
the simple expedient ofadding another cutting device to
scribed deserves special attention. The arm 30 may be
moved from the stop ‘41 directly to the stop 42 without 40 the spindle 9‘ inwardly of the rip saw 8.
Referring now to FIGS. 4 and 5, it will be'seen that
being impeded by the intermediate stops 43 and 44. The
the
feed roll v14- is connected to the swinging frame 15
beveled surfaces 50 on the arm 30 and the beveled surfaces
through
the intermediary of vertical members 57 extend
49 on the stops ‘43 and 144 prevent the stops 43 and 44
the arm 30‘ is in one or the other of its extreme positions.
from halting the arm 30 as it moves from stop 41 to
stop ‘42. This feature of the construction greatly simpli
ing upwardly from opposite end portions of the frame 115,
a mounting bushing 58 carried by the members 57, and a
bracket 59 adjustably connected to the member 58. The
ties the overall control system.
. vertical position of the member 59 relative to the member
It will be seen that the pneumatic cylinder 21 and the
‘58 may be controlled in a conventional manner by the
four stops v41, 42, 43 and 44 provide means by which the
manipulation of a suitable knob 59a. This permits the
rip saw 8 may be brought selectively to any one of four
axis of rotation of the roller '14 to be moved up or down
different positions relative'to the fence 4 of the machine 50 relative to the swinging frame 15 for a purpose which
so that four different widths of material may be cut in
will become clear hereinafter.
a single sequence, if desired. The ‘widest drawer front
The member '58 rotatably mounts a shaft 60 driven
would be one formed by the rip saw 8 with the rip saw
by a sprocket chain 61. The shaft 60 in turn drives a
8 in a position corresponding to that in which the arm
sprocket chain 62 which is coupled to the roller 14 so as
30 abuts ‘against the outermost stop ‘42. The block 24
to positively rotate the roller 14. Suitable tensioning
may be brought to this position by actuating the pneumatic
for the chain 61 is effected by means of an adjustment
cylinder 21 so as to extend its piston rod 22 as far as
device 63 connecting an end portion of the spindle 60 to
will be permitted by the stop 42. In this position, the
a frame part of the machine.
cylinder 51 may be actuated in ‘either direction.
The end portion of the swinging frame ‘15 opposite the
60
After the ?rst pass of the material through the machine,
shaft 20 carries a rotatable spindle 64 which may be
the pressure on the cylinder 21 may be reversed, and
driven by a belt 65 passing around a pulley on the end
pressure may be applied to the cylinder 51 in' such a
of the shaft 64 and around the output shaft of a motor
direction as to extend its piston rod 53 and move the
66 mounted on the swinging frame 15.
control arm 30 upwardly. When the cylinders 21 and 51
A The shaft 64 serves to drive a'scoring cutter 67 disposed
are actuated in this manner, the arm 30‘ is free to move 65 closely adjacent to the fence 4 of the machine._ As the
to the left in FIG. 8 until it contacts the stop 43. Then
strip or panel S is fed past the scoring cutter 67, a thin
its motion must cease. Therefore, the stop 43 ?xes the
line or depression is cut in its outer face at the lower end
position of the rip saw 8 for the second cut of the
material.
In order to condition the system for the third pass of
the material through the machine, all that need be done
is to reverse the pressure on the cylinder 51 so as to cause
the outer end portion of the arm 30' to move downwardly.
This downward movement of the arm ‘30* frees it from
the stop 43 and positions it for engagement with the stop
‘thereof. This depression is designated generally by the
numeral 68 in the drawings. It will be recognized by
persons skilled in the art that scoring lines of this char
acter frequently are desired in drawer fronts and the
like, as features of ornamentation.
It also is possible to shift the scoring cutter 67‘out of
the cutting plane and into a semicircular recess 67’ in the
3,093,169
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fence 4 (FIG. 4), so as to avoid the cutting of a score
the link to the arm 99 in such a manner as to minimize“
In order to accomplish this result,
the shock loads on the parts and to urge the parts 84
the shaft 20 is so mounted that it may be shifted a short
and 99 together. This unit is designated generally by
the numeral 101 in the drawings. It may be adjusted in
line when desired.
distance longitudinally with respect to its axis and trans
versely of the frame. A cylinder 69 pivotally mounted
the usual way, by manipulation of a screw 101a.
on the frame of the machine at 70 and pivotally connected
to the framework 25 at 71 provides a power source for
moving the scoring head when desired. When the
At its outer end, the arm 99 serves to rotatably mount
a shaft 102 for a feed roll 103. The feed I011 103 is
driven by means of a sprocket chain 104 connecting the
cylinder 69 is activated so as to move its piston rod 72,
shaft 102 to a shaft 105 at the end of the machine.
The
the framework 25 is shifted transversely of the machine. 10 shaft 105 is in turn driven by a sprocket chain 106 ex
tending downwardly and inwardly to the central shaft 77
The frame 25 carries the shaft 20 with it, and as a result,
of the machine.
the swinging frame 15 also moves transversely of the
The shaft 105 also carries a sprocket chain 107 on its
machine to re-locate the scoring cutter 67 when desired.
opposite end portion for coupling the shaft 105 to the
Wherever the scoring cutter 67 may be located with
spindle of another feed roll designated generally by the
respect to the bottom edge of the drawer front being
numeral 108. It will be understood that the feed roll
formed, it will be observed that the depth of the scoring
108 is mounted in some suitable way so that it may move
line is constant. This is so because of the relationship
up and down with respect to the frame in response to the,
between the feed roll 14 and the scoring cutter 67 . If the
contours of the work.
strip or panel being formed is contoured, the feed roll
14 will ride up and down, following the contours, and 20
the scoring cutter 67 will move in a similar manner. Thls
relationship is depicted in FIG. 4 of the drawings.
If, at any time, it should be desired to vary the depth
of the scoring line, this may be accomplished by mani‘
pulating the knob 59a, so as to change the relative posi
tions of the lowermost point on the feed roll 14 and the
lowermost point on the cutter 67.
Positive rotation of the feed roll 14 is assured by a
The notcher 80 may be inactivated completely when
desired by manipulating the screw 101a on the pneu
matic cylinder unit 101 so as to lower the link 98. This
permits the frame 84 to swing downwardly, and the cutter
80 may be disposed entirely below the plane of the
work S.
The shaft 86, which supports the swinging frame 84, is
so mounted on the machine frame as to be capable of
axial lengthwise displacement for varying the position of
the groove 95 relative to the bottom edge of the drawer
chain-and-sprocket drive system illustrated in the draw
ings so that the strip or panel S will be fed uniformly 30 front or strip S. This is accomplished by mounting the
shaft 86 slidably in hearings on the frame, and connect
through the machine. The chain 61 is coupled to a
ing with one end of the shaft a power device, indicated
sprocket on a shaft 73 extending transversely of and
generally at 120. This may be in the form of a pneu
mounted upon the machine. The location of the shaft
matic cylinder or other suitable type of device which will
73 relative to the shaft 20 is illustrated clearly in FIG. 2
of the drawings. It is such that the chain 61 will remain 35 accomplish the desired results. The power device is piv
otally supported at one end at 122 on the end frame
taut during pivoting movements of the frame 15.
member 3 and has a piston rod connected through a uni
The shaft 73 also carries a sprocket for driving a chain
versal joint, indicated at 124, with the adjacent end of
74 connected to the shaft of a feed roll 75. The feed
the shaft 86. Thus, upon actuation of the power device
roll 75 is mounted in some suitable way so that it may
move up and down in accordance with the contours of 40 120, the shaft 86 is moved axially to shift the position of
the strips being worked.
the swinging frame 84 and thereby change the plane of
The shaft 73 is in turn driven by a chain 76 leading to
a centrally located shaft 77 on the machine frame. The
shaft 77 preferably is driven through a suitable gear box
78 actuated by an electric motor 79.
A notcher or grooving cutter is shown at 80 (FIGS. 6
and 7). The grooving cutter 80 is mounted on a shaft
82 journaled in a bracket 83 carried by a swinging frame
84, which is pivotally supported at 86 on the frame of
operation of the grooving cutter 80 relative to the adja-.
cent edge of the drawer front or strip S. In this way, the
spacing of the groove can be changed, when desired, with
respect to the lower edge of the strip, according to the
setting of the power device 120.
The operation of the machine is controlled electricallyr
by mechanism located within a control box, indicated
generally at 126 in FIG. 2 and shown more in detail in
the machine capable of vertical adjustment with respect 50 FIGS. 11 and 12.
thereto. This frame 84 swings up and down in response
to the contours of the work.
The shaft 82 is driven by a belt 90 from a motor 92
suspended from the swinging frame 84 and capable of
being adjusted by a hand screw, as indicated generally at
94. The grooving cutter 80 forms a small groove 95 in
the face of the sheet or strip S, as shown in FIG. 7,
during passage of the latter over the grooving cutter.
Also mounted on the shaft 82 is a collar 96, which is
located immediately beside the grooving cutter 80 to
limit the depth of the latter into the sheet or strip S, and
thereby limit the depth of the groove 95. The diameter
of the collar 96 can be changed by substituting another
collar for it on the shaft 82, to vary the depth of the
The control mechanism includes a rotor, generally in
dicated at 128, mounted in the box 126 within suitable
bearings 130. One end of the rotor 128 has a ratchet
device 132 thereon with which a pawl 134 is in engage
ment. The pawl 134 is actuated by an electromagnet
136 to rotate the rotor 128 step-by-step. The electro
magnet is energized each time an output limit switch 135
(FIG. 2) on the fence 4 of the machine responds to the
passage of the trailing end of the work S. Thus, the
rotor 128 normally moves through one step after each
passage of the panel through the machine.
A source of current is indicated generally at 138, which
is supplied to the operating parts of the electric control
system, under control of a hand switch 140 mounted
groove 95 when desired.
65 within the control box 126.
The rotor 128 has a series of cams thereon, generally
Up and down movements of the swinging frame 84 in
indicated at 142, for controlling the various operations of
following the contours of the panel S are controlled by
the machine. These cams are provided with peripheral
means of a link 98 extending upwardly from the frame
notches of suitable number and circumferential disposi
84 to an arm 99. The arm 99 is pivotally journaled at
100 upon a transversely extending shaft so that it also 70 tion to accomplish the desired sequence of operation of
may swing up and down in a vertical plane. When the
the several parts of the machine, an example of which
arm 99 swings upwardly, the link 98 moves upwardly
is illustrated in FIG. 12. Each of the cams 142 has,
to elevate the outer end portion of the swinging frame
in bearing relation with the periphery thereof, a yield
84. A pneumatic cylinder unit of conventional construc
able switch operating member 144, which member 144
tion is employed to connect the upper end portion of 75 extends to and actuates a spring-pressed switch 146.
3,093,169
9
There is one switch 146 for each cam and it functions
as a stepping switch, as will be evident from FIG. 12.
A cycle light is indicated at 148. This light signals the
end of a complete cycle. The circles shown in FIG. 12
are, of course, rotary selector switches, by which the
10
In this particular cycle, the arm 144 would rest on a
high portion of the cam for the ?rst cutting operation
of the cycle. This would maintain the circuit open since
the circuit is connected to the NO‘ contact of the
switch 146.
After the rip saw 8 cuts one width from the sheet S,
cycles for the various wood working elements in the ma
the microswitch is activated by the sheet S. This switch
chine may be established to produce a set of drawer
activates the solenoid 136 to rotate the rotor 128. The
fronts or the like having the desired characteristics. The
cam 142 is positioned so that the member 144 engages
movable contact of each of the switches, represented in
FIG. 12 by a radial arrow, may be selectively positioned 10 a depression in the cam. In this position, the circuit is
closed and the various cylinders in this circuit are ac—
to cooperate with any one of the contacts at the periphery
mated to move their respective elements. The actuation
of its rotary switch. These various connections permit
of the switch 146 operates the electromagnetic valve to
the cycling of the components to be altered so as to
actuate the power device 21 to shift the rip saw 8 into
change the characteristics of the set of drawer fronts
produced. For the sake of simplicity the connections 15 engagement with the stop 43 (FIG. 8) to cut a strip of a‘
different width. After a complete cycle, the rip saw 8
for the rotary switches are indicated only diagrammati
is returned to its home position under control of the
cally in FIG. 12.. Persons of ‘ordinary skill in the art
stop 42.
will have no di?iculty in visualizing the actual construc—
In order for the saw carrying means to be stopped by
tion.
The leads from a single one of the switches 146 have 20 the stop 43, it is necessary that the stop arm 30 be raised.
The power means '51 is actuated in the same manner as
been illustrated, and these will suf?ce to clarify the ar
the power means 21 since it is in the same circuit in this
rangement.
.
particular cycle of yoperations. This moves the arm 30,
No ‘leads for the lower ‘left rotary selector switch in
upwardly, to engage the stop 43‘.
FIG. 12 have been shown. This selector switch is idle
25
The grooving cycle in this example is connected to the
in the condition of the machine depicted in this view.
same switch contact by the manual selector means. The
Each of the switches 146 has three contacts. In FIG.
?rst cut is made with the switch open, thus allowing the
12 these are marked “C,” NO,” and “NC.” The con
grooving head cutter ‘80 to remain in the wide position.
tact “C” is always in the active portion of the circuit,
For the next cut, the circuit has been closed, and the
and the switch serves to couple this contact with either
the “NO” contact or the “NC” contact. As is the usual 30 grooving head has been moved to the narrow position by
its power device 120.
practice in this ?eld, “NO” refers to normally open and
The scoring head '67 in this instance uses the same
“NC” refers to normally closed.
switch contact as the saw and grooving heads. The ?rst
Each {of the pneumatic control cylinders is controlled
cut is made with the switch open, allowing the scoring
by an electromagnetic valve connected with one of the
rotary switches, indicated in ‘FIG. 12, so as to function 35 head to remain out of the path of the bottom. For the
next cut the circuit is closed, thus moving the scoring
automatically in response to the operation of the rotor
head into the path of the bottom of the sheet.
128.
After the second cut is completed, the microswitch is
In ordinary practice, where the machine is used for
making drawer fronts, all of the drawer fronts, except the 40 activated again by the sheet S and the rotor is moved.
The cam is designed to actuate the switch in this posi—
bottom one, will have a score line out at the bottom in
tion also. This will result in the same cutting operation
side edge by the score line cutter 67, as indicated in FIGS.
as described above. This cam is designed to give the
4 and 5. Also, all of the drawer fronts have the bot
same cutting operation for the ‘fourth pass of the mate
tom receiving groove formed by the cutter 89‘ on the in
side face thereof, as indicated in FIG. 7, but the groove 45 rial.
Each cam 42 is designed to actuate its respective switch
in the bottom drawer front usually is cut nearer the bot
at different intervals. Each switch 1146 has a normally
tom than the others. Where other types of sheets or
open contact and a normally closed contact. ‘Each cam,
strips are being formed, either the grooves or the score
therefore, can produce two different cycles of operation.
lines may be omitted, if desired.
The diagrammatic view of the circuit discloses a circuit
Moreover, in the case of drawer fronts, these may be 50
which is connected to one contact of one switch. The ro
in sets varying from two to four in number. The setting
tary switches are provided with one contact for each
of the machine, and especially the time device shown in
NO contact and each NC contact of each of the switches
FIG. 12, will vary as to number and positions of the
146. By manual selection of the particular circuit, nu
cams that are affected, according to the number of pieces
to each set that is to be formed. The sets of pieces may 55 merous varied combinations of operations can be ob
tained.
be cut consecutively, whereby the machine will operate
For another cycle of operation, the manual selector
to make one complete set and then will automatically
switch of the saw may be turned to connect it with the
reset itself immediately to repeat the cycle.
NC contact of the second switch 146, from the left as
1In a representative set of drawer fronts, it may be de
sirable to out three draw fronts, each four inches wide 60 viewed in FIG. 12. The saw stops selector switch may
be connected to the NO contact of the third switch 146.
with a groove one inch from the bottom and with a score
The grooving cutter selector switch may be connected to
line on the bottom edge, and one drawer front six inches
the NC contact of the fourth switch 146, and the scoring
wide with a groove ?ve-eighths of an inch from the bot
cutter selector switch may be connected to the NO con
tom and no score line which would be the fourth or bot
tom drawer of the set. In this case, the left contact of 65 tact of the fifth switch 146. This would give a different
cam 142, as viewed in FIG. 12, would be used, this
being a normal open contact. The stepping ratchet de
vice operated by the electromagnet 136 provides for
set of operations during one complete cycle.
I claim:
1. Apparatus for severing from a panel a set of strips of
different widths and shaping each of the severed strips
operation through a complete cycle, with the switch in
the normal position for the ?rst cut and in the tripped 70 comprising panel-supporting means along which the panel
position for the next three cuts.
may be moved, means for pressing the moving panel to
The particular cam 142, which controls the switch 146
ward said panel-supporting means, a guide on said panel
supporting means in position to be contacted by one edge
of a circuit selected by‘manual positioning of the selector
of the moving panel so as to fix the position of such edge,
switches, is designed to activate the switch 146 to obtain
75 a cutter spaced away from said guide for severing the
the desired combination of operations during a cycle.
3,093,169
11
12
moving panel, means for automatically changing the
movement of said lifting frame about the axis of said
distance between said guide and said cutter to vary the
shaping means for shaping an edge portion of each such
shaft may cause said support to swing the rip saw up or
down in response to the contours of the panel, a block
structure rotatably and slidably mounted on said shaft
strip adjacent said guide, automatic means operating in
dependently of the cutter-positioning means for changing
in position to contact opposite sides of said support, a
control arm connected to said block structure, stationary
the distance between said shaping means and said guide
to vary the shaping action produced upon successive
strips and both of said automatic means being responsive
means for con?ning said control arm to a limited amount
widths of successive strips severed from said panel,
of arcuate movement about said shaft, pneumatic means
for selectively urging said control arm to either end of
to a master control to produce a combination of varied 10 its path of arcuate movement, transversely-spaced ad
justable stops located at the level of the ends of the
operations.
path of arcuate movement of said control arm, and pneu
2. Apparatus ‘for severing strips from a contoured
matic means for selectively urging said block structure
panel and cutting a surface portion of each strip com
along said shaft in either direction as far as permitted by
prising horizontally-extending panel-supporting means
along which the panel may be moved, a guide in position 15 said control arm and said stops.
5. Apparatus for forming a set of drawer fronts from
to contact an edge of the moving panel to ?x the path
a contoured panel comprising horizontally-extending
of such edge, roller means bearing against the upper
panel-supporting means along which the panel may be
surface of the panel near said guide to press the moving
moved, a guide in position to contact an edge of the mov
panel toward said panel-supporting means, said roller
means being mounted for vertical movements in response 20 ing panel to ?x the path of such edge, feed roller means
bearing against the upper surface of the panel near the
to the contours of the moving panel, a ?rst cutter spaced
guide for feeding the panel along the panel-supporting
from said guide and said roller means for severing the
means, said roller means being mounted for vertical
moving panel, a second cutter disposed between said
movements in response to the contours of the moving
guide and said roller means for cutting a surface portion
of the panel, and means connecting said ?rst and second 25 panel, a rip saw rotatable about an axis beneath said
panel-supporting means, said saw being spaced from said
cutters to said roller means for moving the cutters verti
guide a distance corresponding to the Width of a drawer
cally in response to the contours of the moving panel.
front, means automatically moving said saw toward or
3. Apparatus for ripping a set of drawer fronts of dif
away from said guide to vary. the widths of successive
ferent widths ‘from a single contoured panel comprising
drawer
fronts of the set, a scoring cutter rotatable about
30
horizontally-extending panel-supporting means along
an axis above said panel-supporting means near said
which the panel may be moved, a longitudinally-extend
guide for scoring the edge portion of a drawer front mov
ing guide for guiding one edge ‘of the moving panel, a
ing
along said guide, means for automatically moving
roller bearing against the upper surface of the panel, a
said cutter toward or away from said guide to selectively
shaft mounted for rotation about a horizontal axis re
activate the scoring cutter, a grooving cutter rotatable
mote from said roller, means ?xed to said shaft and ro
tatably mounting said roller, a rip saw spaced transversely
from said guide a distance corresponding to the width
of the drawer front being cut, a support for said saw
about an axis below said panel-supporting means for
cutting a bottom-receiving notch in the surface of each
drawer front, means for automatically moving said groov
ing cutter toward or away from said guide to vary the
location of the grooving cutter in successive drawer fronts
40
movement about said shaft, a lifting frame ?xed to said
of the set, said means for moving said saw and said scor
mounted for axial sliding movement along and swinging
shaft and having a transversely elongated rail parallel to
and spaced from said shaft, said rail being disposed be
ing cutter and said grooving cutter being operable inde
rail, and means for moving said support along said shaft
of the moving panel.
pendently of each other, and means connecting said saw,
neath said support, a socket carried by said support for
said scoring cutter and said grooving cutter to said roller
vertical adjustment toward or away from said support, 45 means for moving said saw, said scoring cutter and said
a ball mounted in said socket for resting against said
grooving cutter vertically in response to the contours
to vary the position of said rip saw relative to said guide.
4. Apparatus for ripping a set of drawer fronts of dif
ferent widths from a single contoured panel comprising 50
horizontally'extending panel~supporting means along
which the panel may be moved, a longitudinally-extend
ing guide for guiding one edge of the moving panel, a
roller bearing against the upper surface of the panel, a
shaft mounted for rotation about a horizontal axis remote
from said roller, means ?xed to said shaft and rotatably
mounting said roller, a rip saw spaced transversely from
said guide a distance corresponding to the width of the
References Cited in the ?le of this patent
UNITED STATES PATENTS
923,704
1,180,842
Randall ______________ __ June 1, 1909
Goetz _______________ __ Apr. 25, 1916
1,337,286
Stadig ______________ __
Babare ______________ .._
Nicholson ___________ __
Gillespie ____________ __
20,
29,
31,
22,
1920
1931
1937
1952
Traben _____________ __ Dec. 17, 1957
201,859
668,638
Australia ____________ .... May 10, 1956
Germany ____________ __ Dec. 7, 1938
drawer ‘front being cut, a support for said saw mounted
for axial sliding movement along and swinging movement
about said shaft, a lifting frame ?xed to said shaft and 60
having a portion in alignment with said support so that
Apr.
Sept.
Aug.
Apr.
1,825,041
2,091,647
2,593,745
2,816,581
FOREIGN PATENTS
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