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Патент USA US2406602

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Aug. 27, 1946.
H. HACKLANDER
2,406,602
TRIMMING MACHINE
Filed July 15, 1944
7 Sheets-Sheet‘. 1_
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Aug- 27, 1946.
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- ‘H. HACKLANDER
TRIMMING
MACHINE
~ Filed July is, 1944
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Aug. 27, 1946.
H. HACKLANDER
TRIMMING MACHINE
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Filed July 15, 1944,~
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TRIMMING MACHINE
Filed July 15,‘ 1944
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Aug. 27,1946.
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H. HACKLANDER
2,406,602
TRIMMING MACHINE
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Filed July 15, 1944
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7 Sheéts-Sheet s
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Aug.'27, 1946.
‘H. HACKLANDER
2306,602
TRIMMING MACHINE.
‘Filed July 15,~_1944 '
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7 Shéefcs-Sheet 7
' Jfans ' J?baélander
Patented Aug. 27, 1946
2,406,6d2
UNITED STATES PATENT OFFICE
2,406,602
TRIMMING MACHINE
Hans Hacklander, Linden, N. J ., assignor to The
Singer Manufacturing Company, Elizabeth,
N. J ., a corporation of New Jersey
Application July 15, 1944, Serial No. 545,0.61
19 Claims. (Cl. 164-49)
IV
2
This invention relates to cloth trimming ma
chines, as of the kind suitable fortrimming off
feed-cup 6 of the feeding mechanism and, the ex
imperfectly seamed portions of stockings and for
ating connections for the inner feed-cup 6. Co
other purposes; and has for its primary object to
provide an improved machine of this character
feed-cup ‘I which depends from the overhanging
capable of operating at high speed and so or
ganized as to eiTect the severing or trimming of
bracket 3. Removably secured upon the bracket
3 is a cover-plate 8 which is secured by means: of
the material fed through the machine, in a high
a screw 9. >
tension providing a housing for some of the actu
operating with the inner feed-cup 6 is an outer
Adjacent the top of the standard 2 is a hori
ly e?icient manner and with a minimum amount
10 zontal partition I0 which divides the machine
of attention by the operator.
frame into a splash-lubrication compartment II
and abelt compartment I2, see Figs. 3 and 4. The
splash-lubrication compartment I I' is closed at the
With the above and Other objects in View, as
will hereinafter appear, the invention comprises
the devices, combinations and arrangements of
parts hereinafter set forth and illustrated in the
accompanying drawings of a preferred embodi
ment of the invention, from which the several
features of the invention and the advantages at
bottom by means of a plate I3 secured by screws
I4 and sealed by a gasket I5;
Disposed in the splash-lubrication compart
ment II, transversely of the machine-frame, is a
tained thereby will be readily understood by those _
main-shaft I5 journaled' in bushings Il, Fig. 3,
skilled in the art.
?xed in ?anged sleeves I8 secured by screws IS
_
In the accompanying drawings,_
20 in bosses 20 cast in the standardv 2.
Fig. 1 is a front elevation of a trimming ma
chine embodying the invention, with the outer
feed-cup removed and a portion of the overhang
ing bracket broken away;
Fig. 2 is a side elevation with a portion of the
machine frame broken away;
.
Fig. 3 is a vertical transverse sectional view
taken through the machine-frame and illustrat
ing the main-shaft and some of the connections
Mounted on
the opposite ends of the main-shaft I6 are bal
ance-wheels 2| each having a belt-groove 22.
Each flanged sleeve I8 is formed with an oil-port
23 in’ register with a slot 24 in the boss ill]v and an
oil inlet port 25 in the bushing I'l, whereby oil is
introduced into the shaft bearing. To prevent
leakage of oil, the main-shaft I6 at its opposite
ends is provided with spiral grooves 26 which
Fig. 4 is a vertical longitudinal sectional view
feed the excess oil in the shaft bearing back into
.- the splash-lubrication compartment I I. In addi
tion to this ‘oil-guard, the ?anged sleeve I 8 is pro
taken through the machine-frame and illustrat
ing the trimmer-bar and feeding mechanisms;
Fig. 5 is a top plan of the machine, with the
cover-plate removed and showing the belt-drive
vided with an undercut circular recess 21 entered
by a reduced hub portion 28 of the balance-wheel
‘2|. Formed in the reduced portion 28 are several
circular oil-collecting grooves 29. In the event
for the outer feed-cup ;
Fig. 6 is an enlarged view in side elevation of
that some oil should leak onto the balance-wheel
actuated thereby;
'
the pivotally mounted feed-cup supporting lever
for the outer feed-cup;
.
-
II, this oil is collected in the grooves 29 and is
thrown o? by centrifugal force into the undercut
recess 27 and is returned into the splash-lubrica
Fig. 7 is a horizontal sectional view taken 40 tion compartment It by a return port 30 formed
through the machine-frame substantially 0n the
line VII—V]I of Fig. 4;
'
_
in the lower portion of the ?anged sleeve I8.
The main-shaft I6, as shown in Figs. 3 and 7,
is formed with a crank, in addition to having se
Fig. 8 is an enlarged sectional view substan
tially on the line VIII-VIII of Fig. 7;
n cured thereto an eccentric, whereby the below
Fig. 9 is an enlarged sectional View of the cutter 5%V. described connections within the compartment I I
blade supporting mechanism and associated
are actuated.
parts;
From Fig. 4, it will be seen that the connections
Fig. 10 is a sectional view substantially on the
actuated by the main-shaft I 6 and extending be
line X--X of Fig. 9; and .
low the same dip into oil, whose normal level is
Fig. 11 is a bottom plan view of the machine 50 shown by the line L in Fig. 4, contained in the
with the lower cover-plate removed, showing the
lower portion of the standard. These connec
clutch and gear-drive for the feed-cups.
tions, during the operation of the machine, splash
Referring in detail to the drawings, the‘ present
the oil throughout the lubrication compartment
illustrated embodiment of the invention includes
I I of the machine and thereby thoroughly lubri
a machine-frame generally designated I and in
cate the mechanism contained therein. The level
cluding a standard 2 and a laterally projecting
of the oil may be inspected from time to time,
overhanging bracket 3. Formed as an integral
part of the standard 2 and disposed beneath the
and preferably through a transparent window 3|
having thereon a horizontaI line 32 indicating
overhanging bracket 3 is an extension 4 and a
the correct level of the oil.
supporting lug 5, the latter sustaining the inner 60 Located in the belt compartment I2. see Fig.
2,406,602
3
4
From Fig. 3, it will be observed that the ful
crum-stud 5! is threaded into the lug 52 and is
held against turning by a set-screw 56. To pre
5, is a conventional clip-belt 33 ‘for actuating the
outer feed-cup l, the pivotally mounted support
ing lever 34 for the outer feed-cup ‘I, and a light
vent niovement of the hub of the elbow lever 50
ing attachment 35.
lengthwise of the fulcrum-stud 5!, a collar 51
is secured upon the inner end of the fulcrum
From the above description, it will be under-,
stood that there is provided a machine-frame ,
stud 5 1.
Referring now to Figs. 4 and 5, the feed
actuating shaft 4% has secured upon its upper end
a grooved belt-pulley 53 which is connected by a
divided into two compartments, one of which is
oil-tight and houses all the actuating mechanism
operating at a high rate of speed, while the
other of which is opened to the atmosphere and '
houses some of the actuating mechanism oper
ating at a slower rate of speed. The ‘primary
advantage of such a construction is that the
common form of clip-belt 33 to a second, or outer,
grooved belt-pulley 59 fastened upon the upper
end of a vertically depending feed-shaft 60 sup
porting at its lower end the outer feed-cup l‘.
mechanism operating at high speed can be
splash-lubricated, while the mechanism operating iii The two belt-pulleys Stand 53 are preferably
constructed of a soft material, such as ?ber or
the like, to minimize wear and noise. The de
at slow speed need not be splash-lubricated,
The work is adapted to be fed, intermittently,
pending feed-shaft .86 is journaled in spaced
bearings'provided in the opposite ends of a sta
through the machine in substantially a vertical
plane, by means of the inner feed-cup 6 and the
outer feed-cup ‘l. Referring particularly to Fig. »
4, it will be seen that the inner feed-cup 6 is
secured by a screw 36 upon the upper reduced
end-portion of a vertical feed-shaft (“Which is
tionary, tubular housing or sheath 6! which is
clamped at its upper end by screw 52 in the split
end 63 of the pivotaliy mounted feed-cup sup
porting lever 34. From the above description, it
will be understood that the two feed-cups 6 and
journaied in spaced'bushings 38 and 39 ?xed
'i are intermittently rotated simultaneously to
in the frame-lug 5 and the extension 4, respec
advance the material in one direction, and that
tively._ Forming a housing for the vertical feed
the degree of movement imparted to the feed
shaft Bl is a relatively thin stationary tube or
cups per turn of the main-shaft E6 is deter
sheath 4b of which the upper end is ?xed in the
mined by the adjustable feed eccentric 53.
lug 5 and the lower end is ?xed in the extension
The trimming instrumentalities per se comprise
4. The tube to serves as a guard for preventing b
a stationary ledger blade and a movable cutting
the work from becoming wound upon- the feed
blade to cooperate therewith in severing the ma
shaft 3? as the latter is rotated and also, since
terial fed through the machine by the feed-cups.
the tube has a tight fit in the extension '3, the
The ledger blade 61% (Figs. ‘7 and 8) is sup
oil in the machine-frame I may rise in the tube
40 to the same level as the oil in the machine 35 ported on a bracket 55 secured to the lower end
of feed-shaft housing 6!, being rigidly held by a
frame, thereby lubricating the lower bearing for
clamping plate 66 and screws 61. The cutting
the feed-shaft 31. The upper bearing is lubri
end 58 of the ledger blade, of which end the upper
cated by hand through a centra1 bore 1'“ and
radial duct 42, the oil being distributed through
out the’length of the bearing by the spiral oil
groove #3 cut into the feed-shaft 31.
edge constitutes the cutting edge, is preferably
40 of arcuate form and the blade is so located that
a portion of the cutting edge is in the plane of
tangency of the feed-cups. As shown in Fig. '7,
The feed-shaft 31 has fastened upon its lower
end-portion a spur gear ‘44 which meshes with
a second spur gear 45 secured to the lower end
of a vertically disposed feed-actuating shaft £56
approximately the mid-point of the cutting edge
is substantially directly above the tangent point
'
journaled within the splash-lubrication compart
ment H. The feed actuating shaft 46 is inter
mittently turned by a one-way clutch 4?, which
may be of any suitable construction, having an
actuating-arm as connected by a link '49 to the .*
lower end of an angle lever 50 journaled upon
a stationary fulcrum-stud 5i fixed in a lug 52
integral with the machine-frame I. The angle
lever ‘58 is oscillated upon the fulcrum-stud 5|
by an adjustable feed-eccentric 53 through the
pitman connection 54. Any form of adjustable
eccentric may be used, but I prefer to employ
the type disclosed in the U. S. Patent of P. Diehl
et al. No, 814,027, issued Mar. 6, 1906. Access
to the adjustable eccentric 53 may be had by
removing the screw-plug 55 in the standard 2.
The provision of the adjustable eccentric per
mits a regulation of the extent of oscillation im
parted to the actuating-arm 48 of the one-way
clutch by the link 49, angle lever 50 and pitman
54. Inasmuch as the turning movement im
parted‘to the feed-actuating shaft 46 is deter
mined by the extent of oscillation imparted to
the one-way clutch, and since the feed-actuating
shaft 45 is operatively connected to the feed
shaft 31 bythe spur gears 44 and 45 and to the
feed-shaft 6i} by the clip-belt 33, it follows that
a change in the eccentricity of, the, eccentric will
effect a change in the degree ofturning move
ment imparted to the feed-cups 6 and 1.
of the feed-cups.
As shown in Fig. 9, the ar
cuate cutting end of the ledger blade substantially
registers with the upper peripheral edge of the
outer feed-cup l.
correspondingly located adjacent the upper
peripheral edge of the inner feed-cup 6 is an
arcuate guide-?nger $9 secured by screws 70 to
bracket ‘H. As shown in ‘Fig. 2, the bracket ‘H
is secured to the face of the standard 2 by
screws “E2. The thickness of ?nger 6-9 is such
that its upper face is in the plane of the top
face of the ledger blade 64. The convexly curved
edge 69' of the finger B8 is' preferably substan
tially in vertical register with the work-engaging
face of the feed-cup 6; said edge 69’ being in
part opposed to the cutting end 68 of the ledger
blade.
The movable cutting member comprises a blade
‘:13 having a cutting edge 14 which is preferably
inclined to the plane of tangency of the feed
cups. Adjacentthe cutting edge ‘M, the blade
has a projecting ?nger 15 which extends across
the plane of Vtangency of the, feed-cups and bears
upon the ledger-blade 64. To maintain the cut
tingblades in eifective cutting relation, the mov
able blade is yieldingly urged downwardly info
pressure contact with the ledger-blade.
Slidably mounted in the upper and lower spaced
arms 16 and ‘i6’ ofga bifurcated bracket ll is a
‘tubular. carrier shaft '18 which is internally
75 threaded to receive a long clamping screw 19.
eats-see
.
v
5
lever 34, Figs 4‘ and 5,- adjacent itsrf'orward end
The clamping screw engages a shoe 80 which bears
up‘o‘n the‘top of the cutting blade ‘I3.v From the
underside, the latter vis-supported by a plate 8|
is formed with two spaced bearing lugs III and
H2 which are, apertured to receive pivot-studs
H3 and H4.
which is secured by screws 82 to the enlarged
base portion 83 of carrier shaft ‘I8. ~ Bridging the
Pivot-stud H3 is secured by a
screw H5 in a-supporting bracket H6 fastened
by screws Ill upon the bottom wall of the belt
arms 16' and ‘I6’ and secured thereto by screws
compartment I2 and the pivot-stud I I4 is secured
by screw H8 in a boss H9 cast integral with the,
machine-frame I. The two bearinglugs III and
H2 are spaced to provide a clearance for the
81,5 853s a'gui‘deplate 86 ‘which is straddled by
the ?anges 1810f a collar88 secured-by set screw
‘89 to carrier shaft is. The latter and" the movable
blade supported thereby are" thus held against
clip-belt 3‘3,
turning relatively to the bracket 11. A spring 90,
' At the/inner end of the'feed-cup vsupporting
lever 34 (see Figs. 4 and 5) there is formed an
offset lug I20 and at right angles to the main
body of the supporting lever 34a stop-arm I2I
blade." To this end, the'blade ‘I3 is preferably
adapted to be received between two adjustable
slightly spaced vertically from the guide-finger ‘I5.
stop-bars I22 and I23, which limit the extent
The cutting edge T4 of the cutting blade ‘I3 is
of movement of the outer feed-cup ‘I toward and
arranged to intersect the plane containing both
away from the inner feed-cups. It will be ob-‘
axes of rotation of the feed-cups and is adapted
to be reciprocated in such plane for work-severing 20 served in Fig. 4 that the upper stop-bar I22 is
threaded upon the adjusting screw I24 and is
coaction with the ledger-blade. In the result,
guided by the second adjusting screw I25,'while
and by reason also of the above-described ar
the lower stop-bar I23 is threaded upon the sec;
rangement and location of the ledger-blade, the
ond adjusting screw I25 and guided by the ?rst
cutting of the material is ‘effected substantially
adjusting screw I24. By having the upper stop,
at the ‘point of t'ange'ncy'of the feed-cups‘, at
bar I22 adjustable, the‘ outer feed-cup ‘I may be
which point the material to be trimmed is most
initially set at various distances from the inner
?rmly held and presented to the ledger and cut
feed-cup 6 depending upon the thickness of'the
ting blades. The curved edge 69’ of the ?nger
material being trimmed. After the stop-bar I22
59, not only functions in helping to direct the
has been correctly set, the lower stop-bar I23 can
work between the feed-cups, but said edge 59’
be adjusted to limit movement of the outer feed‘
also serves to support the work against lateral
cup in a direction away from the inner feed-cup.
movement between the blade ‘I3 and the upper
In order to facilitate assembly, the two adjust
edge of the’ “feed-cup 6, whereby skewing of the
acting on the top‘of collari88 and bearing against
the underside ‘of the; ar'm ‘I6, serves to maintain
the cutting blade ‘I3 in contact vwith the ledger
work is obviated.
Referring now to
ing screws I2il and I25 are reduced at their lower
'
ends and set into apertures I26 drilled in the
machine-frame, the screws I24 and I25 being
Figs. 3V and
_
V 4 and the_ means ‘
by which the cutting blade is reciprocated, it
maintained seated in these apertures I26 by the
cover-plate 8 which rests upon the ?anges I21
will be seen that the bracket v'I‘I is formed upon
or secured to the end of a horizontally disposed
reciprocatory knife-bar sLjournaled in bushings
formed upon the heads of the adjusting screws
92 and193 ?xed in the machine-frame. 'To effect
I24 and I25.
ciprocates in the housing 92, the bearing surface
feed-cup supporting lever 35 is aperture-d and
dished, as at I28, to receive the semi-spherical
of the latter has an annular recess 94 cut therein,
which recess at its bottom opens into an oil-re
turn groove 95 in the bushing 92 which directs
7
Referring now to Fig. v3, itwill be seen that the
offset lug I20 provided at the inner end of the
a strippingof the oil from the bar 9] as it re
45 nut I29 threaded upon the upper end of a control
rod I30 connected at its lower end preferably by
any excess oil collected in the recess Q4 back
a chain to a knee-control or foot-treadle (not
into the splash-lubrication compartment II.
The bar 9I intermediate its ends has clamped
thereto, by means of a screw 96, a collar 91 pro
shown). The control-rod I30 extends through a
to slide in a guideway between gibs 99 secured
boss I32 integral with the bottom plate It and
at its upper end extends through an aperture in
' tubular housing or sheath I~3I which at its lower
vided with an upstanding guide-lug 9Bv adapted 50 end is pressed into an aperture in an upstanding
to the bottom of the horizontal partition I9‘ by
screws I00. The function of the guide-lug 98 is
to provide means for preventing the bar 9| from
turning in its bearings as the same is reciprocated.
Depending from the collar 9'! is a lug IOI con
nected by a link I02 to the upper arm of a rock
the wall I0 of the machine-frame. The housing
I3I provides an oil-seal and eliminates leakage
55 (f ‘011 from the splash-lubrication compartment
Meansis provided for maintaining the outer
feed-cup in its lowered or operative position and
lever I03 having an elongated hub I04, see Fig. 7,
this means comprises a coil-spring I33 surround
journaled between collars I 05 upon a fulcrum rod
I06 ?xed in spaced lugs I0'I formed upon the 60 ing the control rod I30, the upper end of the
standard 2. Connected to the lower arm of the ‘ spring bearing against the bottom of the offset
lever I03 is a pitman I08 which is connected at 1 lug I20 on the feed-cup supporting lever 3-4! and
the lower end of the spring bearing on a washer
its other end to a crank [09 formed in the main
I 34 at- the top of a tubular spacer member I35
shaft I6. As shown in Fig.4, the rear wall of the‘
machine-frame is provided with’ a ‘removable 65 within the housing IS“. The bottom of the tu
bular spacer member I35 is in engagement with
screw-plug III] which can be removed to permit
the top of an adjusting sleeve I36threaded into
assembly of the bar 9] in its bearings.
the boss I32. The adjusting sleeve I35 at its
'To facilitate the introduction of the work be
lower end is formed with a knurled head’ I 8‘! and
tween the two feed-cups, means is provided
whereby the outer feed-cup 7 can be shifted away 70 has threaded upon its shank a locking nut I38 for
from the inner feed-cup 6.v This means com
prises the feed-cup supporting lever 34~which, as
~
previously described, has clamped in its split for
'. ward; end 63 the'sheath GI in which is J'ou‘rn'aled..,
the feed-shaft 60. The feed-cup supporting 75
securing the adjusting sleeve in any set position.
From the above description, it will be understood
that the coil-spring I33 yieldingly maintains the
stop-arm I2I. in contact..with the upper stop-bar
I22 which initially positions the outer feed-cup
7
8
1 a de?nite distance from the innerieed-cup 6,
and that the tension of the coil-spring i_33 can be
blade being mounted above and adjacent theother
feed-cup vwith its cutting edge located to cross
the, cutting edge of the ledger blade also at a point
substantially overlying the point of tangency of
regulated by the adjusting sleeve I36.
_
-
_
When the machine illustrated is used for cer
tain operations, such as trimming hosiery or other
material the edges of which have a pronounced
tendency to curl, it is desirable to employ a so-v
called uncurling guide which ?attens the edges of
the material and presents them to the cutting
mechanism in distended Vform appropriate for 10
trimming.
_
7
One form of uncurling guide, generally desig
the
feed-cups.
‘
V
,
>
‘
'
r
4. In a trimming machine, including a pair of
rotary feed-cups adapted to grip and feed the
material to be trimmed, the improvement which
comprises the combination of a ledger blade, hav
ing an arcuate cutting edge overlying and sub
stantially registering with a peripheral edge of
one of the feed-cups at the point of tangency of
such cup with its adjacent cup, and a movable
nated I39, is shown in Figs. 1 and 2. It is mounted
cutting blade to cooperate with the ledger blade
on a bracket I40 secured to the machine frame by
a screw MI and includes'a central guiding plate 15 in trimming the material fed by said cups, said
cutting blade having its cutting edge located to
I42 terminating at its upper end in a supporting
cross the cutting edge of the ledger blade at a
shank M3. Disposed on opposite sides of the
point lying substantially in the plane of the axes
guiding plate “32 are uncurlers I44 and M5 yield
of rotation of the feed-cups.
ingly pressed against the faces of the guiding
5. In a trimming machine, including a pair of
plate, as by springs M6. The construction of un 20
rotary feed-cups adapted to grip and feed the
curlers of this general character is well known,
material to be trimmed, the improvement which
and since the details of the uncurler illustrated
comprises the combination of a ledger blade
form no part of the present invention, no further
mounted adjacent one of the feed-cups with its
description is necessary.
cutting edge disposed transversely of the axes of
However, it will be recognized that by reason
rotation of said feed-cups and having a portion
of the above-described arrangement of the ledger
of its cutting edge substantially in the plane of
and cutting blades, whereby the trimming takes
tangency of the feed-cups, and a movable cutting
place substantially at the point of tangency of
blade, said cutting blade having supporting
the feed-cups, the uncurling guide, of whatever
means extending across the said plane of tan
particular construction, can be mounted ex
tremely close to such point of tangency, thereby
gency of the feed-cups,
'
6. In a trimming machine, including a pair of
further contributing to the effectiveness of the
rotary feed-cups adapted to grip and feed the
machine, particularly at high speed. As appears
in Fig. 7, the uncurling guide is mounted between
material to be trimmed, the improvement which
comprises the combination of a ledger blade
the feed cups adjacent and immediately in ad
mounted adjacent one of the feed-cups with its
vance of the trimming blades.
Having thus set forth the nature of the inven
cutting edge disposed transversely of the axes of
rotation of said feed-cups and having a portion
tion, what I claim herein is:
of its cutting edge substantially in the plane of
1. In a trimming machine, including opposed
rotary feed-cups adapted to grip and feed the 40 tangency of the feed-cups, a movable cutting
material to be trimmed, the improvement which
blade to cooperate with the ledger blade in trim
comprises the combination of a ledger blade
ming the material fed by said cups, and means
mounted adjacent one of the feed-cups with a
adapted to support the cutting blade on the
portion'of its cutting edge substantially in the
ledger blade throughout the entire movement of
plane of tangency of the feed-cups, and a mov
the cutting blade.
7
'
able cutting blade to cooperate with the ledger
I '7. In a trimming machine, including a pair of
blade in trimming the material fed by said cups,
rotary feed-cups adapted to grip and feed the
said cutting blade having its cutting edge located
material to be trimmed, the improvement which
comprises the combination of a ledger blade
to cross the cutting edge of the ledger blade at a
point lying substantially in the plane of the axes 50 mounted adjacent one of the feed-cups with its
cutting edge disposed transversely of the axes of
of rotation of the feed-cups.
rotation of said feed-cups and having a portion
2. In a trimming machine, including a pair of
rotary feed-cups adapted to grip and feed the ma
of its cutting edge substantially in the plane of
tangency of the feed-cups, a movable cutting
terial to be trimmed, the improvement which
comprises the combination of a ledger blade 55 blade to cooperate with the ledger blade in
mounted adjacent one of the feed-cups with a por
trimming the material fed by said cups, and
tion of its cutting edge substantially in the plane
means for supporting the cutting blade on both
of tangency of the feed-cups, a cutting blade
sides of the plane of tangency of the said feed
adapted to cooperate with the ledger blade in
- cups.
trimming material fed by said cups, and means to 60 ‘ 8. In a trimming machine, including a pair of
reciprocate the cutting blade, said cutting blade
rotary feed-cups adapted to grip and feed the
having its cutting edge so located with reference
material to be trimmed, the improvement which
comprises the combination of a ledger blade
to its path of reciprocation as to coact with the
mounted adjacent one’ of the feed-cups with its
cutting edge of the ledger blade at a point lying
substantially in the plane of the axes of rotation 65 cutting edge disposed ‘transversely of the axes of
of the feed-cups.
rotation ‘of said‘ feed-cups and having a portion
3. In a trimming machine, including a pair of
of its cutting edge, substantially in the plane of
feed-cups disposed for rotation about vertical
tangency of the feed-cups, a’ movable ‘cutting
axes and adapted to grip and feed the material to
blade to cooperate'with the ledger blade in trim
be trimmed, the combination therewith of a ledger 70 ming the material fed by, said cups, and means
blade mounted above and adjacent one of the
feed-cups with a portion of its cutting edge sub
stantially overlying the point of tangency of the
feed-cups, and a movable cutting blade to coop
for supporting the cutting blade immediately ad
jacent the cutting edge'of the ledger blade and
on both sides of the plane of tangency of the
said feed-cups.‘
'
j
'
'
'
‘
‘
'
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erate with the ledger blade, said movable cutting 75 V‘ 9. Ina trimming machine, including a pair 01’
2,406,602
9
rotary feed-cups adapted to grip and feed the
material to be trimmed, the improvement which
surface substantially alined with a surface of the
ledger blade, and a movable cutting blade to co
comprises the combination of a ledger blade
mounted adjacent one of the feed-cups with a
operate with the ledger blade, said cutting blade
being resiliently supported on one of said sur
faces.
15. In a trimming machine a frame including a
portion of its cutting edge substantially in the
plane of tangency of the feed-cups, a movable
cutting blade to cooperate with the ledger blade
in trimming the material-fed by said cups, and
means for resiliently supporting the cutting blade
on the ledger blade.
10. In a trimming machine, including a pair of
standard and an overhanging bracket, a pair of
feed-cups mounted to rotate in a horizontal plane
beneath said bracket, a drive shaft for one of the
feed-cups and a stationary housing for said shaft
depending from said bracket, a reciprocatory
knife-bar mounted in the standard, a ledger blade
rotary feed-cups adapted to grip and feed the
material to be trimmed, the improvement which
mounted on said 'drive shaft housing, and a co
operating cutting blade mounted on said recipro
comprises the combination of a ledger blade
mounted adjacent one of the feed-cups with a 15 catory knife-bar~
portion of its cutting edge substantially in the
16. In a trimming machine a frame including a
plane of tangency of the feed-cups, a cutting
siandard and an overhanging bracket, a pair of
blade to cooperate with the ledger blade in
feed-cups mounted to rotate in a horizontal plane
trimming the material fed by the cups, and
beneath said bracket, a drive shaft for one of the
means to reciprocate thecutting blade in the 20 feed-cups and a stationary housing for said shaft
plane of the axes of rotation of the feed-cups.
depending from said bracket, a ledger blade
mounted on said drive shaft housing with a por
11. In a trimming machine, including a pair of
tion of its cutting edge substantially in the plane
rotary feed-cups adapted to grip and feed the
of tangency of the feed-cups, a cooperating cut
material to be trimmed, the improvement which
comprises the combination of a ledger blade
ting blade, and means disposed in the standard
for reciprocating the cutting blade in the plane
mounted adjacent one of the feed-cups with a
portion of its cutting edge substantially in the .
plane of tangency of the feed-cups, a cutting
blade to cooperate with the ledger blade in trim
ming the material fed by the cups, resilient sup
porting means for said cutting blade, ‘and means
to reciprocate said supporting means in the plane
of the axes of rotation of the feed-cups.
17. In a trimming machine, the combination
with a, pair of rotary feed-cups adapted to grip
30 and feed the material to be trimmed, a ledger
of the axes of rotation of the feed-cups.
12; In a trimming machine, including a pair of
rotary feed-cups adapted to grip and feed the
material to be trimmed, the improvement which
blade mounted adjacent one of the feed-cups with
a portion of its cutting edge located substantially
at a point of intersection of the plane of rotation
of the axes of the feed-cups with the plane of
tangency of the feed-cups, and a movable cutting
comprises the combination of a ledger blade
blade to cooperate with the ledger blade, the cut
ting edge of said cutting blade having a path of
mounted adjacent one of the feed-cups with a '
movement to sever the material substantially at
portion of its cutting edge substantially in the '
the said point of intersection.
-
;plane of tangency of the feed-cups, a cutting 4.0
18. In a trimming machine, the combinatio
blade to cooperate with the ledger blade in trim
with a pair of rotary feed-cups adapted to grip
ming the material fed by the cups, the cutting
and feed the material to be trimmed, a ledger
blade having its cutting edge located to intersect
blade mounted adjacent one of the feed-cups with
the plane of the axes of rotation of the feed-cups,
a portion of its cutting edge located substantially
and means to reciprocate the'cutting blade in
at a point of intersection of the plane of rotation
of the axes of the feed-cups with the plane of
13. In a trimming machine, including a pair of
tangency of the feed-cups, a movable cutting
rotary feed-cups adapted to grip and feed the
blade adapted to cooperate with the ledger blade
material to be trimmed, the improvement which .
to sever the material substantially at the said
comprises the combination of a ledger blade 50 point of intersection, and an uncurling guide
mounted with a portion of its cutting edge sub
located between the feed-cups adjacent and in
stantially in the plane of tangency of the feed
advance of said blades.
cups and substantially coincident with a periph
19. In a trimming machine, a pair of opposed
eral edge portion of one of such cups, a guide
and relatively yieldable outer and inner feed-cups
member mounted adjacent the other of such 55 ‘disposed for rotation about vertical axes, means
cups with a surface substantially alined with a
for rotating said feed-cups, a ledger blade dis
such plane.
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,
surface of the ledger blade, and a movable cut
posed above and in close proximity to the outer ‘
ting blade to cooperate with the ledger blade,
one of said feed-cups, said ledger blade having a
said cutting blade having a supporting portion
cutting'edge, a coacting movable cutting blade
adapted to ride on said surface of the ledger 60 having a horizontal path of reciprocation above
blade throughout the entire movement of the
the inner of said feed-cups and across the cutting
cutting blade.
edge of said ledger blade at the upper side of said
14. In a trimming machine, including a pair of
ledger blade, means for reciprocating said mov
rotary feed-cups'adapted to grip and feed the
able cutting blade, and a guide member disposed
material to be trimmed, the improvement which 65 between said movable cutting blade and the inner
comprises the combination of a ledger blade
mounted with a portion of its cutting edge sub
stantially in the plane of tangency of the feed
cups and substantially coincident with a periph
of said feed-cups, said guide-member having a '
fabric-guiding edge opposed to the cutting edge
of said ledger blade and disposed substantially in
vertical register with the work-engaging face of
eral edge of one of such cups, a guide-member 70 said inner feed-cup.
mounted adjacent theother of such cups with a
HANS HACKLANDER.
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