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Патент USA US2405800

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Aug. 13, 1946;‘,
w. R. SPILLER ETAL
2am,“
STITC'HING MACHINE
Filed May 6, ‘1,9443
2 Sheets_sheet 1 ‘
Patented Aug. 13, 1946
nit
UNITED STATES PATENT »
FiCE
2,405,800 »
. STITCHING MACE
William R. Spiller and Robert J>.-Niederhauser,
Dayton, Ohio, assignors, by mesne assignments,
to Acme Steel Company, Chicago,
tion of Illinois
Application May 6, 1943, Serial No. {185,872
12 Claims. (Cl.1--15)
This invention relates tov stitching machines
and more particularly to the general type of ma‘
chine as disclosed in applicants’ copending ap
plication, Serial No.’ 472,316, ?led January 14,
1943.
It is the principal object of this invention to
provide 'a stitching machine adapted. to form
flat, tight-?tting stitches in hard material such
2
drive for actuating the clincher plunger and the
support for the arm;
'
‘
Fig. 4 is an end elevational view of the outer
end of the clincher arm and clincher mechanism
looking inwardly in the direction of the pedestal;
Fig. 5 is a plan view on an enlarged scale look
ing down upon the clincher mechanism in the
as sheets of metal or the like with the stitches
same relative position'as Fig. 3; and
extending in a direction transverse to the line
Fig. 6 is a detail-sectional view'of the con
struction providing for the removal and re-’
offeed of the material.
‘
It is a further object to provide a machine of
this character having a clincher mechanism car
ried by an arm on or over which the work is re
ceived, the clincher mechanism being located
closely adiacentvthe side and outer end of the
r
placement of the clincher plunger.
Referring to the drawings which disclose a
preferred embodiment of vthe invention, the ma
chine is shown as having a mainv frame includ
15
ing a base portion I 0, an upwardly projecting
arm so ‘that a minimum of clearance space is
pedestal l I, and an overhanging head’ l2. The
required‘making it possible to form and clinch
drive motor I4 is mounted in the rear portion
‘of the head and has a suitable driving connec
tion to the main shaft I5. Shaft l5 extends
the stitches close to a corner of the work, for
example the inside corner of a box-like structure. 20
through the head to the front part thereof
It is a still further object of the invention to
provide such a stitching machine in which the
stitches are formed in a direction transverse to
the line of feed of the work material and hav
where‘ the mechanism ‘for forming and driving
the stitches is located, the position thereof being
indicated by reference numeral l 6. A coil of wire
ing a power actuated clincher plunger for e?ect 25 I’! is mounted in ‘a convenient location on the
head and the wire feeds into the stitch forming
ing the flat clinching of the legs of the stitch
mechanism in the usual way where it is formed
with the clincher mechanism arranged to effect
into an inverted U-shaped stitch, the two'legs
the clinching of the legs of the stitch in such
relative positioning.
'
7
of the stitch being driven downwardly into and
through the work material received beneath the
It is also an object to provide a clincher
mechanism for such a stitching machine which
The construction of the angle head stitcher is
may be easily adjusted and maintained accu
'rately in a predetermined adjusted position and I
known in the art, and it is not necessary to de
in which the parts of the clincher mechanism
scribe the details thereof, beyond noting that the
subject to heavy wear
may be readily removed 35 head is so constructed and arranged that it pro
and replaced.
vides for forming the stitch in such away that
it stands generally transverse with respect to the
Other objects and advantages will be apparent
direction of feed of'work material under the
from the following’ description, the accompany
stitching head and parallel with the longitudi
ing drawings and the appended claims.
Referring to the drawings which disclose a 40 nal dimension of the arm, and is preferably dis
placed with respect to the vertical central :plane
preferred embodiment of the invention,
of the pedestal so that the stitch is-vactually
Fig. l is a perspective view with certain parts
formed and driven in this plane, the drive mech
being broken away showing a' stitching machine
anism being suitably offset to provide for such
constructed in accordance with the present in
. head.
vention;
Fig. 2 is a view partially in section and par
‘
relationship.
‘
"
'
~
An arm 20 is provided on which the work is
received, such arm also carrying the clincher
mechanism which provides for clinching the tWo
enlarged scale;
legs ‘of the stitch after they have been forced
Fig. 3 is a view lengthwise of the arm looking 50 through the work material and ?attening the
legs against the lower face of "the material.
down upon the top of the arm from a position to
Both the arm and the frame are of sturdy'con
one side thereof partially in plan and partially
struction beingpreferably formed as relatively
in horizontal section along the line 3-3 of Fig.
heavy castings to provide a, rigid structure hav--v
2 showing the construction of the clincher
mechanism and also showing in broken form the 55 ing a minimum of de?ection underthe loads en
countered in use.- Arm 20 is adjustably carried
tially in side elevation showing the clincher
mechanism at the outer end of the arm on an
2,405,800
4
3
movement thereof under the action of gravity.
on the pedestal, and is so mounted as to have
The arm can however be readily actuated either
up or down by the means described above, and
vertical adjustment thereon to accommodate
work material of different thickness, and also
thus adjustment is simpli?ed while at the same
is arranged to have lateral adjustment to prop
time maintaining ?rm and secure support for
the arm throughout its operation. Suitable in
dicating and index means may be provided as
desired to facilitate the setting of the arm.
For the purpose of actuating the clincher
plunger, the drive shaft 15 is provided with a
erly center the clincher mechanism with respect
to the location at which the stitch is formed.
The clincher mechanism is constructed and
arranged to receive and clinch the legs of the
stitch in substantially the plane of the longitu
dinal dimension of the arm, and is likewise offset, being located relatively close to one side of
cam 40 which actuates a connectingrod 4i , such
bell crank lever 42 piv
otally supported at 43 on frame H. The oppo
that the stitch itself remains within substantial
site end- of the bell crank engages a push rod
ly the central vertical plane of the entire ma 15 44 which is mounted for movement in a sub
chine. In this way the stitch may be located
stantially longitudinal direction in the frame,
close to the edge of the work material and a min
and projects parallel with the arm 20 and into
imum clearance around the stitch is required.
a position adjacent the inner end and below
To provide for obtaining such positioning and
the working surface thereof. Arm 29 carries a
adjustment of the clincher arm and mechanism,
push rod 45 supported in extensions formed in
the face of pedestal l l is formed with the spaced 20 the lower side of the arm and in a protected
ways 22 and with ‘vertical bearing‘ surfaces 23
position beneath the working surface thereof,
the arm and adjacent the outer end thereof, so
' rod in turn operating a
against which corresponding surfaces of the
push rod 45 being parallel to and having abut
ting engagement with the’ end of rod 44. In
with rearwardly extending projections 24 with
order to provide for maintaining the operative
25
in which there are mounted studs 25 having en
relationship established between the two rods 44
gagement with wedge shaped gibs 25 adapted
and 45 throughout the extent of the vertical and
to bear against the ways 22. respectively, end
lateral adjustment of the arm 28, one or the
plate 21 preventing lateral displacement of the
other of these rods is provided with an extended
gibs. By suitably adjusting the studs 25, it will
bearing surface so that proper engaging rela
be evident that the entire arm can be shifted
tion is maintained notwithstanding relative
arm are adapted to hear.
The arm is formed
laterally from one side to the other while still
travel of the arm and its rod 45. In the form
shown, rod 44 is su?iciently large in diameter
maintaining its ?rm support upon the ways, and
when so adjusted and with the wedges again
tightened it will be securely retained in such ad
to have an end face 4401. so that it will have
proper driving relation with rod 45 in all relative
positions thereof. Rod 45 is retained in one
justed position. Preferably three such sets of
bolts 25 are located in vertically spaced relation
on arm Z‘D to provide maximum security and
accuracy of positioning. It will be clear also that
with the bolts 25 spaced vertically as shown,
it is possible to loosen the uppermost while tight
ening the lowermost, and Vice versa, and in this
side of offset arm 20 by means of bearing mem
bers 4-5, and is normally urged into contact with
rod 44, in a direction to retract the clincher
40 plunger, by means of spring 41.
way rock the arms about its longitudinal axis as
may be necessary to maintain it level and paral
lel with the forming mechanism.
In order _to secure vertical adjustment in the
1
Suitable means are likewise provided for ad
justment in the extent of movement of the
clincher plunger and in the upper elevation
which it reaches, to determine the force with
which the plunger bears against the legs of the
stitch, and the extent to which it is ?attened
against the work. Such adjustment can be in
corporated at any suitable point in the clincher
location of the arm while at all times maintain
ing the arm in desired level horizontal relation.
the arm is provided with enlarged apertures 35!
actuating mechanism and the adjustment may
adjacent its inner end which are adapted to
be made accessible either from the rear of the
receive locking bolts 32 threadedly received in so pedestal or from a protected position beneath
the face of the pedestal II. The enlarged aper
the‘ arm. It will be obvious that in this way the
tures permit adjustment both vertically and
effective length of the connecting rod 45 is
late'rally'and the bolts at the top of the arm
altered thereby changing the range of travel
take the load intension' and support the arm
of the plunger relative to the arm and the dies
?rmly.
‘
To effect vertical adjustment of the arm, a pair
of downwardly projecting lugs 34 is provided on
the lower face of the arm 20 and a connecting
supported thereon.
The clincher mechanism is carried at the
outer end of arm 20 and is indicated generally
by reference numeral 50. The end of the arm
pin 35 having a threaded part 36 is secured
is recessed to receive a frame member 5| of gen
thereto. Nuts 31 are threadedly received on ,1: erally inverted U-shape which ?ts within the
, pin 36 and are located on opposite sides of an
abutment 38 secured to the face‘ of the pedestal.
Thus it will be apparent that having ?rst loosened
bolts 32, the entire arm may be ‘raised or low
ered upon the pedestal to adjust the position of
the arm to a'dilferent level by suitably adjust
ing either the upper or the lower of the nuts 31.
The nuts 31 and bolts 32 are then again tight
ened to securely lock and retain the arm in
adjusted'position. Since it is desirable to have
as little movement of the arm as possible in
the course of the stitching operation, the gibs
26 are preferably set up to such an extent that
they tightly vhold the arm and preferably with
sufficient frictional force to prevent downward ,
recess and is supported with its two legs ex
tending downward and resting upon a part 52‘
which is integral with arm 2!). Bolts 53 re
movably secure the frame in position upon the
arm. Part 52 thus serves to take the down
ward thrust upon the clincher mechanism, and
the reaction tending to move the clincher
mechanism outwardly of the arm is taken by
means of bar 54 bolted to the end of arm 20 by
means of bolts 55 and having a part 55 overlap
pingeone leg of the frame and thus resisting the
tendency to outward movement thereof.
The frame’, also embodies an upwardlyextend
ing Web portion 60 to opposite sides of which are
2,405,800
5
7
releasably secured clamp members 6! and 62
by means of bolts 63. The clamp members project
forwardly beyond the central web and are formed
with recessed portions 64 at their overhanging
ends to provide for receiving and securely hold
ing a pair of die members 66 and 67. These die
members are correspondingly recessed to ?t accu
bell crank with a correspondingly beveled face 89
so that upon return movement of the latch, the
lever is cammed back to the engaging position
where it is kept throughout the normal operation.
This construction, therefore, facilitates the re
moval’ and replacement of all parts of the clincher
mechanism which are subject to heavy wear in
rately within the ends of the clamps, so that when
use, particularly the dies and the clincher plunger
tightened, the clamps will hold the dies in as
sembled position as shown in Fig. 5, forming a 10 itself. Furthermore the arm provides a ?rm and
rigid support for the clincher mechanism with
vertically extending guideway for receiving a
the same being arranged to receive the stitch ex
clincher plunger, an aperture 68 being formed
tending generally parallel with the longitudinal
through the base of the frame 5| of suf?cient
dimension of the arm, and located substantially
size to allow such passage of the clincher plunger.
Since the dies are subjected to heavy wear in 15 in the vertical central plane of the entire machine.
Further the adjustment of the arm, either ver
supporting the work material and receiving the
tically or laterally, does not aifect the adjust
ends of the stitch as they are forced through the
ment of the clincher mechanism, and does not
work material and into the outer ends of the dies
require any change or disconnection in the drive
which are suitably shaped as shown to receive
mechanism therefor. Likewise the clincher
the stitch, it is desirable to provide for their ready
removal and replacement, this being elfected in 20 plunger may be adjusted to drive against the
legs of the stitch with a predetermined force and
the present construction by means-of the releas
having secured the proper adjustment of the
able clamping members 6 l, 62. It is not necessary
clincher plunger operation, the arm 29 may be
to completely remove the clamps when it is de
then reset for work’ of di?erent thickness, and
sired to release the dies, as the mere loosening of
bolts 63 and the clamps, will permit the dies to 25 notwithstanding the raising or lowering of the
arm, it is not necessary to readjust’ the opera
be withdrawn and replaced. Preferably the re
tion of the clincher plunger. Since the two ad
cesses 64 and the dies 66, 61 are made symmet~
justments are independent the setting of the
rical so that after being used on one side, they
may be withdrawn and inverted to be assembled 30 plunger is retained and it provides for making
the same type of clinch on the new work as be
in reversed relation with their lower sides upper~
fore, this being a distinct advantage where work
most, thereby providing additional wear from the
same elements.
of different thicknesses is beind handled. The
entire mechanism is highly satisfactory and com
A shaft 15 is mounted between the legs of the
frame 5| and serves as a support for rotatably 35 pact in form, and provides for the location of the
mounting a bell crank lever 15. This lever has a
stitches in the direction .described and almost
notched out portion 11 for engagement with a
immediately adjacent the corner of the arm re
drive pin 18 carried by the forward end of the
quiring a minimum of clearance with respect
thereto.
push rod 45, thereby providing for the power ac
tuation of the lever.
While the form of apparatus herein described
The lever 15 is of less thickness than the space
constitutes a preferred embodiment of the in
between the legs of the frame member, and is
vention, it is to be understood that the inven
so mounted on shaft 75 as to provide for bodily
tion is not limited to this precise form of appa
movement axially of the shaft. The lever carries ,
ratus. and that changes maybe made therein
a projecting portion or pin 85! which has driving 45 without departing from the scope of the inven~
engagement in an aperture 8! formed in the
tion which is de?ned in the appended claims.
clincher plunger 82, the clincher plunger being
What is claimed is?
suitably shaped to engage at its end the legs of
1. In a stitching machine of the character de
the stitch and to ?atten them down tightly against
scribed having a base. a pedestal. an arm, means
the lower surface of the work. Preferably the 50 for supporting said arm from said pedestal, and
clincher plunger is constructed as described in
a stitcher head also supported from said pedestal
said copending application, Serial No.. 472,316.
and arranged to form and drive a stitch toward
said am with the stitch generally parallel with
the longitudinal dimension of said arm, the com
being symmetrical so that it can be invertedand
additional wear thus obtained.
In its normal driving relation, lever l'li is moved 55 loination of clincher mechanism carried by said
bodily along shaft 15 toward the clincher plunger
arm for effecting the clinching of the legs of
82 and pin 80 is normally engaged in driving re
the stitch, means for securing said clincher
lationship therewith. In order to keep the lever
mechanism to said arm in position closely adja
in driving engagement, a pivoted latch member
84, adjustably supported on bolt 85 carried by one
of the legs of the frame 5! is arranged to engage
the side face of the lever, and is of su?icient thick
ness to keep the lever normally in engaging rela
tionship with the plunger. The latch has a man
ual operating portion 86 providing for the swing
ing of the latch to a withdrawn position where
the lever is permitted to move axially of shaf
15 to disengage the drive pin from the clincher
plunger. This disengagement may be facilitated
cent one side and at the outer end of said arm
providing for receiving work material thereon
with a lesser clearance from one side thereof
than from the other, and means carried on said
pedestal and forming a driving connection for
effecting the actuation of said clincher mecha
65
nism.
2. A stitching machine of the character de
scribed the combination of a base, a pedestal,
an arm having a supporting base, means for sup
porting the base of said arm centrally upon said
by the manual shifting of the lever to a release 70 pedestal and providing for vertical and lateral '
position when the latch has been withdrawn.
When so withdrawn, the clincher plunger is
free to be removed downwardly through the dies,
and to ‘be reversed or replaced as desired.
The
latch is formed with a beveled face 88 and the '
adjustment thereof, the outer portion of said
arm being laterally offset from the center line of
said pedestal, a stitcher head carried‘ by said
pedestal and arranged to form and drive the
stitches with the direction of the stitch generally
parallel with the longitudinal dimension of said
2,405,800
arm and substantially centrally with respect‘to
said pedestal, and clincher mechanism carried
at the outer end of said arm and adjacent one
side thereof to locate said clincher mechanism
in cooperative relation with said stitcher head.
bars in assembled relation upon said frame form
ing a guide for a clincher plunger, an actuating
member for said clincher plunger having a por
tion projecting therefrom, means mounting said
actuating member upon said frame member for
3. In a stitching machine of the character de
bodily movement toward and away from said
clincher plunger to provide for engagement and
scribed having a base, a pedestal, an arm, means
disengagement of said projecting portion there
for supporting said arm from said pedestal, and
of with said clincher plunger, and means for nor
a stitcher head also supported from said pedestal
10 mally retaining said actuating member in opera
and arranged to form and drive a stitch toward
tive position with its said projecting portion in
said arm with the stitch generally parallel with
engagement with said plunger and adapted to be
the longitudinal dimension of said arm, the com
moved to an inoperative position to provide for
bination of, clincher mechanism carried by said
movement of said actuating member to disengage
arm for effecting the clinching of the legs of the
its said projecting portion from said plunger
stitch including means forming dies for support
to a release position.
ing the Work material and receiving the ends of
'7. A clincher mechanism for use with a wire
the stitch, said die means being spaced from the
stitching machine of the character described
outer end of said arm by only the dimensions
having a supporting arm comprising a frame
of the die itself, and clamp means supported on
member, means for detachably securing said
the outer end of said arm and along one side
thereof for releasably retaining said dies in op
erative position at said one side and immediately
adjacent the outer end of said arm providing for
receiving the work thereon with a lesser clearance
from one side thereof than from the other, -
ii. In a stitching machine of the character de
scribed having a base anda pedestahan arm,
means for supporting said arm from said pedes
tal, and a stitcher head also supported from said
pedestal and arranged to form and drive a stitch
toward said arm, the combination of clincher
mechanism carried by said armfor effecting the
clinching of the legs of the stitch including means
forming dies for receiving’ the ends of the stitch
and forming a guide,=a clincher plunger movable
in said guide to clinch the ends of said stitch,
clamp means supported on the outer end of said
arm and along a side thereof for releasably re
frame member upon said arm, a pair of clincher
die members, means for releasably securing said
die members in assembled relation upon said
frame forming a guide for a clincher plunger,
an actuating member for said clincher plunger
having a portion projecting therefrom, means
mounting said actuating member for bodily
movement to provide for engagement and dis
engagement of said projecting portion with said
clincher plunger, and means for normally retain
ing said. actuating means in engaged position
with said plunger, said retaining means provid
ing upon displacement thereof from said normal
position for movement of said actuating member
to a release position, said retaining means and
said actuating member having cooperating parts
adapted upon movement of said retaining means
to said normal position to effect movement of
said actuating member to its said engaged posi
taining said dies in operative position at the. side
ofsaid arm, fastening means located inwardly 40 tion.
8. A stitching machine of the character de
of said die means for securing said clamp means
uponsaid arm, said clamp means extending out
wardly beyond said fastening means ,to receive
said die means in position immediately adjacent
the outer corner of said arm providing for re
ceiving the work thereon with a lesser clearance
from one side thereof than from the other, and
drive means carried by said arm and having a
part extending closely adjacent the outer end
of said arm for engaging said plunger to drive
scribed comprising a base, a pedestal, a stitcher
head, an arm having a base supported centrally
_ from said pedestal and having an outer portion
laterally offset with respect to said base and ex
tending in operative relation with respect to said
stitcher head, means for adjustably securing said
arm upon said pedestal providing for vertical,
lateral and angular adjustment about the longi
tudinal axis of the arm, said stitcher mechanism
being arranged to form and drive a stitch in a
5. A stitching machine .of the character de
scribed the co-mbination of a. base, a pedestal,
direction substantially parallel with the longi
tudinal dimension of said arm and substantially
centrally of said pedestal, a clincher mechanism
an arm having an inner supporting part, means
carried by said arm and including a movable
for receiving said inner part of said arm centrally
upon said pedestal in supporting relation there
on and providing for vertical and lateral adjust
mechanism in said arm with said plunger also
the same in said guide.
,
ment thereof, said arm having an outwardly ex
clincher plunger, means supporting said clincher
substantially parallel with the longitudinal di
tending offset part bringing one side thereof sub
mension of said arm and substantially centrally
of said pedestal, and drive means in said arm
of said pedestal, a stitcher head carried by said
pedestal and arranged to form and drive the
stitches with the direction of the stitch generally
parallel with the longitudinal dimension of said
9. A stitching machine of the character de
scribed comprising a base, a pedestal, a stitcher
head, an arm supported from said pedestal in
arm and in said central vertical plane, and
clincher mechanism carried at the outer end of
said arm and adjacent said offset side thereof to
head, means for adjustably securing said arm
stantially in line with the vertical central plane 60 for effecting driving actuation of said plunger.
locate said stitcher ‘mechanism in cooperative re
lation with said stitcher head.
6. A clincher mechanism for use with a wire
stitching machine of the character described
having a supporting arm comprising a frame
member, means for detachably securing said
frame member upon said arm, a pair of die mem
bers, means for releasably securing said die mem
operative relation with respect to said stitcher
upon said pedestal providing for vertical and
lateral adjustment in the relation thereof, said
stitcher mechanism being arranged to form and
drive a stitch in a direction substantially parallel
with the longitudinal dimension of said arm, a
clincher mechanism carried by said arm and in
cluding a movable clincher plunger, means sup
porting said clincher mechanismin said arm with
75 said plunger also substantially parallel with the
2,405,800
longitudinal dimension of said arm, drive means
in said arm for effecting driving actuation of said
plunger, and means providing a maintained driv
ing connection from said pedestal to said drive
mechanism throughout the normal range of ad
justment of said arm.
10. Clincher mechanism for use with a wire
stitching machine of the character described
having a supporting arm comprising a generally
U-shaped frame member, means for detachably 10
securing said frame member upon said arm, a
arm for releasably securing said clamp members
upon said frame, a, pair of dies correspondingly
recessed and adapted to be securely held by said
clamp members in assembled position forming.
a guide for a clincher plunger, and a clincher
plunger movable within said dies, said dies being
removable and replaceable upon the loosening
of said clamp members.
12. In a stitching machine of the character de
scribed having a base, a pedestal, and a stitcher
head carried by said pedestal and arranged to
and drive the stitches with the direction of
pair of clincher dies, means for releasably secur
ing said dies in assembled relation upon said
the stitch generally parallel with the longitudinal
frame forming a guide, a clincher plunger mov
able in said dies, a shaft carried by the arms of 15 direction of said arm and substantially centrally
with respect to said pedestal, the combination of
said U-shaped member, a bell crank rotatably
an arm having a supporting base, means for sup
supported by said shaft and movable axially with
porting the base of said arm centrally upon the
respect thereto, said bell crank having a project
ing portion adapted to engage said plunger in an
said pedestal and providing for vertical and lat
operative driving position thereof and to be dis
eral adjustment thereof, the outer portion of said
engaged from said plunger upon axial movement 20 arm being laterally offset from the center line
to an inoperative position, and a latch member
of said pedestal, clincher mechanism carried by
said arm for effecting the clinching of the legs
carried by said frame movable to a position to
of the stitch including means forming dies for
maintain said bell crank in engaged relation with
supporting the work material and receiving the
said plunger and movable to a release position
providing for axial movement of said lever to dis 25 ends of the stitch, and clamp means supported
engage said plunger.
on the outer end of and at the side of said arm
for releasably retaining said dies in operative
11. Clincher mechanismxfor use with a wire
position at one side and adjacent the outer end
stitching machine of the character described
of said arm providing for receiving the work
having a supporting arm comprising a frame
member, means for detachably securing said 30 thereon with a lesser clearance from one side
thereof than from the other.
frame member- adjacent the outer end of said
arm, a pair of recessed clamp members, fastening
means located inwardly of the outer end of said
WILLIAM R. SPILLER.
ROBERT J. NIEDERHAUSER.
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