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Патент USA US2113457

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April 5, 1938. f
F. F. zElER
2,113,457
MACHINE FOR`CL|OSING AND POSITIONING SPRINGS IN POCKETS
Filed Feb. 1o, 1934
s-sneets-sheet 1
ATTQRN
.
April 5, 1938.
- F. F; zEn-:R
2,113,457
MACHINE FOR CLOSING AND POSITIONING SPRINGS IN POC
Filed Feb. 1o,.19s4
Fig
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April 5, 1938» ,
u
F. F. zElEIR
2,113,457
MACHINE FOR CLOSING AND POSITIONING SPRINGS IN POCKETSl
Filed Feb. l0, 1934
t
S’SheetS-Sheet'ö
Fig. 3.
_
ATToRN
2,113,451
Patented Àpr. 5, 1938 `
UNITED STATES >PATENT? -ori-‘Ica
2,113,457
,
'
MACHINE FOR CLUSING AND POSITIONING
`
»
SPRINGS IN POCKETS
Frederick F. Zeier, Nyack, N. Y.. assignor to
Metropolitan Sewing Machine Corporation,
Nyack, N. Y., a corporation of Delaware
Application February 10, 1934, Serial No.-'r710,657
11 Claims.
(Cl. 112-2)
The present invention relates to a novel and
improved machine for closing and positioning
springs in pocketed strips.
,
`
Figure 1 is a front elevation.
Fig. 2 is a side view.
,
containing contra-axially disposed springs in the
pockets'thereof, and for moving the coil springs
Fig` 3 is a perspective view of the fabric strip
in. various stages of completion.
5
Fig; 4 is a detached side view of the guide.
Figs. 5, _6, and 'I are sectional views of the hous
ing taken on lines and arrows 5, 6, and 1, re
from the contra-axial to an axial position in the
spectively, in Fig. `1.
One of the objects of the present invention is
5 to provide an economical yet highly efii'cient ma
chine for closing the open side ofpocketed -strips
10 pockets of the Vstrip.
It is another object of the present invention to
, provide a machine fory turning springs in a pock
eted strip which will not tear or wear the strip.
All efforts in this direction heretofore have re
suited in very large, cumbersome, costly and
therefore impractical machines. The present in
vention, however, provides a compact, economical
20
In the drawings :
and highly ei'iicient machine which is extremely
practical, and which, in addition to providing a
new structure and mode of operation for a spring
turning device, provides other instrumentalities
in the unitary structure which operate coordi
nately with the pocket closing element for per
formingadditional operations on the loaded strip
to improve the quality and speed the output.
2
One feature of the present invention is the pro
vision of a structure adapted to _move contra
axially disposed coil springs in a proper trans-'
verse piane relative to the pockets in the strip.
30
Another feature is the provision of means
~ adapted to straighten out the free lips of the
fabric strip prior to operation thereon by the sew
ing mechanism.
i'
A still further feature of the present invention
- is the provision of a device adapted to pink the
side of the fabric strip associated with and func
tioning coordinately with other operating parts of
the machine.
1
Fig. 9 is a side view of the pinker.
Fig. 10 is a detached view of the puller feed
mechanism.
'
‘ , Fig. 1l is a detail view of the'fabric straighten
ing plate.
Y
40 main conveyor adapted to both 'compress the coil
springs within the fabric strip and to advance the
loaded strip in a positive manner, which may be
used eitherseparately or in conjunction with a
'
15
Fig.~ 12 is a fragmentary top plan view.' '
Before proceeding with a detailed description
of the various structural details and mode of
operation of the present invention, it is desirable
that brief reference be made to the various `func- 20
tions accomplished by it. k'I'his may be under
stood- best by viewing. Fig. 3 wherein there is
shown a pocketed fabric strip I2 comprising a
woven strip having an upper ply I 3 and lower
ply I4 with a closed side I5 and open side I6 25
to the strip, and having evenly spaced walls I'I
dividing the strip into a. >series of pockets I8
throughout its length. Preferably, though not
necessarily, lthe dividing AWalls Il end somewhat
short of the outer edge of the open side I6 form- 30
ing a. free’upper lip I3’-and a free lower lip Il’
for the purpose of facilitating original contra
axial entrance and assembly of coil springs I9
into individual pockets. The present invention
is equally operative and advantageous on strips 35
formed by merely folding oneply on another and
yby stitching partly or fully thereacross to form .
pockets.
,
Yet another feature is the provision of a novel
puller feed mechanism.
-
Fig.V 8 is a top~ view of the pinker detail.
»
In its broadest embodiment, the machine of
Y
the present invention functions; first, to flatten 40
the springs I9 in the contra-axial position in the
pockets I8; second, to guide the loaded strip I2
to a main conveyor 20; third, to` straighten the
upper and lower free lips I3’ and I4' respec
tively; fourth, to pink the open side I6 Iof the 45
A still further feature _of the present invention
is the provision of a novel spring turning appa strip; fifth, to compress', hold and feed the pock
ratus which embodies a new mode of operation eted springs to a plurality of stations for various
having the characteristic of being positive in its operations thereon; sixth, to close the pockets;
action and preventing wear and tear on the fabric seventh, to pull the fabric in synchronism with
the pocket closing element and with the main 50
strip. In addition, too, the present invention em
bodies the feature of accommodating various sizes conveyor; eighth, to move the springs from a
of both strips and coil springs without any contra-axial into an axial position within >the
'changes in the structural parts of the machine. closed pocket. If preferred, in some embodi
Other features and advantages will hereinafter ments the third and fourth functions, for exam
ple, may be eliminated,`
' '
appear.
55
/
2
2,113,457
Considering these multifarious functions, the
present invention provides a comparatively sim
ple, economical, yet very satisfactory and highly
ef?cient machine. This will be appreciated when
it is realized that in practice the operator prac
tically allows the machine to run itself and may
direct practically all his attention to the manual
‘operation of sliding the pockets I8 onto the
inserter-nozzle of a nearby- inserter mechanism
10 (not shown) and loading springs I9 therein, and
steps on a pedal 22 to stop the machine of the
present invention for a moment or two if it should
happen to use up the ordinary intermediate sur
plusage of loaded strip at the introductory side
15 thereof.
Structural details of the present invention, in
the form now preferred, comprise a main base
23 supported in spaced relation to a floor by suit
able legs 24, adapted to support a sewing head
20 25 which may, as shown, be a conventional and
well-known Metropolitan type sewing machine
passing threads 26 and 21 to a needle 28 and a
looper respectively in the conventional manner
and providing a usual presser foot 29 and feed
25 dog 30. 'I'his sewing machine makes a line of
stitching 3I to close the open side I6 as the
fabric strip is moved to itin a manner about to
be described.
_
At the entrance side of the machine the pres
ent invention provides a guide 32 including a
provided with a vertical bent section 62' having
elongated slots 63 to accommodate holding screws
64 and are slidable vertically on the side of the
sewing machine head 25 in order to brace the
upper ends ,of the long standards 31 in any set
position of the blocks. 'I'he shaft 60 of the driver
pulley 59 is similarly mounted in adjustment
blocks 65 on the double short standard 50, and
is adjustable thereon in order to provide any
desired spacing in the Work supporting area be
tween the upper and lower belts 4I and 56. A
set of straps 66 similar to the straps 62 are se
cured to the slide blocks 65 at their lower ends,
and are provided with a screw and elongated slot
connection 61 on the side of a puller feed mech 15
anism 68 (similar to 63 and 64) to support the
blocks in the desired vertical position and to
brace the free end of the short standard 50.
As is shown most clearly in Fig. 1, the free
running pulley 51 of the upper belt 56 is on a
higher plane vertically than the driver pulley 59,
and a frame 69 rotatably supporting a plurality
of rollers 10 on pins 1I is provided to guide the
belt through an angular path ' 12 and. then
through a substantially parallel path relative to
the upper run of the lower belt. This frame is
supported by upwardly extending straps 13 and
14, having screw and elongated slot connections
13’ and 14’ on the straps 62 and 66 for adjust
ability.
'
table 33 or support preferably with a curved top .
While the coil springs I9 are in an unrestrained,
33' secured as by arms 34 on a shaft 35 to blocks expanded, contra-axial position in the individual
36 on long standards 31 with an inverted, U
pockets, they tend to pull back the open side of
shaped shell 38.
As may be seen best in Figs. 1 . the strip midway between the dividing walls I1.
.35 and 4, the guide further includes a free roller However, the main conveyor, in addition to feed
39 on arms 40 secured to the base 23 by screws ing the loaded strip to the sewing machine needle
40’ overlying the table to initially compress the and to other stations, serves to compress the
springs and to align them transversely in a spring in the contra-axial position so that the
contra-axial position in the pockets I8 as the
40 strip I2 is drawn across the table. The inverted,
U-shaped shell also serves to align the springs
transversely, but mainly; it guides the loaded fab
ric strip properly depthwise of the machine, rela
tive to the sewing machine head 25 and to the
45 novel form of main conveyor 20.
open side ofthe strip remains substantially par
allel and so that the line of stitching is parallel
with the side thereof. The angular incline» 12 of
the belt gradually compresses the spring just prior
to its entrance into the parallel area between the
two belts.
.The main conveyor comprises an endless lower
This main conveyor 20 alone may be used to
move the loaded strip to the various oœrating
belt 4I operating below the base 23 over free
running pulleys 42 and 43 on shafts 44 and 45
stations, but in order to insure a more satisfac-A
and above the base over a free pulley 46 on the
feed mechanism 68 on a plane with the outer or
50 shaft 35 at the entrance side of the machine,
and over a traction or driver pulley 41 on a shaft
open side of the strip and substantially central
with the travel of the work relative to the needle.
48 near the outlet side of the machine. The
shafts 35 and 48 are supported in blocks 36 and
49 for adjustment in the long standards 31 and
55 short standards 50 respectively to be adjustably
ñxed at the proper vertical plane relative to a
table 5I of the sewing head 25 and to other oper
ating units. 'I'he shafts 44 and 45 of the lower
free pulleys 42 and 43 are similarly mounted in
slide blocks 52 and 53 for vertical adjustment
on lower standards 54 and 55 respectively, the
adjustment being provided to initially tighten the
endless belt 4I on the driver pulley 41 and to
take up slack as the belt stretches.
85
A complementary upper endless belt 56 is pro
vided, to run in unison with the lower belt 4I,
operating over a free running pulley 51 on a
shaft 58 at the entrance side and over a driver
pulley 59 on a shaft 60 at the outlet side of the
70 machine;
'I’he shaft 58 vof the free running pulley 51 is
supported in blocks 6i for vertical adjustment
on the long standards 31 where they are secured
in desired position as by a set screw 6I’. Straps
75 62 secured to the blocks 6I with screws 63 arel
tory result the present invention provides a puller
The puller feed mechanism may be of a conven
tional type, for example, and as shown, the well
known Metropolitan puller feed mechanism com
prising a main frame 68’ with a lower feed roller
15 on one end of a drive shaft 16 extending
through the frame, and an upper feed roller 11
mounted on a shaft 11’ in a yoke 18 for limited
vertical movement in an overlianging arm portion
of the frame. Rotation of the4 lower feed rollerv
is accomplished through the provision of a clutch
19 intermittently operated in a uni-directional
movement by an arm 80 connected to an eccentric
8| on the end of a main drive shaft 82 of the
sewing machine, and the upper feed roll is driven
in unison with the lower feed roller through
meshing gears 83 and 84 connected to the shafts
16 and 11’ respectively. The lower shaft 16 is
provided with a small sprocket 85 adapted to
drive a large sprocket 86 on the driver pulley 41 70
through a chain 86', and the` coordinately rotat
ing shaft 11’ of the upper feed roll is provided
with a similar small sprocket 81 for moving a
large sprocket 88 on the upper driver pulley
through a chain 88'.
3
2,113,457
shown in Figs. 8 and 9 and secure it to the main
base of the machine with screws ||8 in the
tapped holes ||| shown clearly in Fig. 1. By
proper adjustment of the connection 99 the -pe
ripheral speed of the cutter wheel is in the same
ratio as the main conveyor 28, feed ldog 38, and
The ratio between the small sprockets and large
sprockets is proportioned to impart the same pe
ripheral speed or movement to the face of the
driver pulleys 41 and 59, and to the puller feed
rollers 15 and 11. The eccentric 8| and clutch
19 are adjusted to rotate the puller roll shaft 16
pulle'r feed 88.
in proper speed and travel with the usual feed
dogr and reciprocation of the needle 28 while the
latter two are operated by the main drive shaft
\
28 and _puller feed 88 of the present invention
moves the loaded fabric strip is a spring turning,
or positioning device ||2 at the outlet side of
the machine which is of particularly novel con
10 of the sewing machine' head 25 in the usual man
ner. Thus, there is absolute synchronized travel
between the main conveyor 28, the feeddog 38
and the puller feed 88. `
»
The ñnal station to which the main conveyor
A
This strip advancing mechanism comprising the
15 main conveyor 28 and/or the puller feed 68 of the
present invention is intended to be used not alone
for advancing the strip to the needle for the line _
struction and represents a new mode of opera
tion for devices of this character. It embodies
a table ||3 suitably secured to the base 23 that
supports a housing ||4 adapted to substantially
enclose the fabric strip |2 as it ais fed from the
-of stitching, but advances it to a plurality of other machine and to support> one side of the loaded '
stations to be worked upon by other mechanisms. fabric strip while a unidirectional spring turning 20
One of these other stations includes a fabric instrumentality l|5 in the‘ form of beater straps
20
straightening “device including a finger plate 89 . operates on the `other side to turn the spring.
The housing is provided with an entrance ||8 Y
secured to the standard 31 with ayoke 89’ andy
shaped substantially as -shown in Fig. 5 and.
adapted to enter between the free lips of the fab
ricto straighten out either or both»~the upper aligned with the loaded fabric strip as it comes
from' the main conveyor 28. In the middle sec~
lip I3' and the lower lip I4' if either should hap
pen to be curled in from the spring inserting tion it is preferably shaped’as shown in Fig. 6,
operation; and _also includes a belt 98 on a -free including a centrally disposed convexity ll'land
running upper pulley 9| supported in a standard receding concavlty H8, and has an outlet ||9
9| ' and running around a lower pulley 92 secured lpreferably as shown in Fig. '1. The underside
to a lower drive shaft 93, which is adapted to of the table ||3 is hollowed out and has a cut A,son
sweep against the underside and straighten out out ||3’ underlying the middle section of the
the lower lip should it happen to be curledback ' housing ||4 in -order to permit the beater _strap v
||5 to engage the loaded fabric.
on the outside ofthe fabric strip. In those cases
The straps are preferably secured to cross- pins '
where a strip with dividingV walls extending to'
the outermost edge of the open side is used, so |28 on a hub |2| mounted on the outer end of
that the dividing walls would hook onto the finger an operating shaft 93. The 'straps may have
plate 89, it is merely necessary to loosen the yoke
on the standard 31 and swing it out of operative
position relative to the strip.
»
At another station,` preferably intermediate the
straightening device 89 and sewing mechanism
2’5, the present invention is provided with a pink
ing device 94 (see Figs. 8 and 9)A adapted to cut
metal clips |22 secured to the ends thereof by
rivets |23 in order to lessen wear and to impose
a hammer-like impact upon the springs.
As the loaded fabric I2 with the contra-axially
disposed springs I9 is fed to the housing ||4, sub
sequently to the closing thereof bythe line of
stitching 3|, the beater straps ||5 which are ro
a serrated edge 96' on the open side I6 of the
tated@ at a fairly high speed, initially engage the '
of operation, a slight modiñcation of the well
known Metropolitan pinker is used, as is shown
most clearly in Figs. 8 and 9. It comprises a base
member 95 supporting a zigzag cutting roll.96
for uni-directional rotation on a shaft» 91 and
having anni-directional clutch 98 with an arm
v98’ providing an adjustable connection 99 with
a. connecting rod |88 associatedvat its opposite
plane which is caused'by the -spring as it quickly
expands v. into the axial position- within the 55
strip |2 to prevent unravelling of long lengths of contra-axially disposed springs, as shown in Fig.
the warp which would otherwise curl around the 5, and cause the spring to begin to move toward
the axial position in the pocket, and subsequent
feed dog and other‘operating parts of the' ma
chine and cause trouble. When the open side of blows by the beater straps cause it to move into
the fabric is provided witha selvage this trouble the full axial position (shown in-Fig. 6) wherein
would not occur and it would not be necessary to the jumping of the spring into the axial position
use the pinker. Various types of pinkers may; be is facilitated by ther centrally disposed. convexity
used in the combination of the present invention, ||1 and the [concavlty ||8 extending therefrom.
but because of its simplicity, long life, >and ease, 4Figure 6 also shows the fabric out of a transverse-
end with an eccentric |8| on the forward end of
the main drive shaft 82. A yoke |82 4_having a
pivotal connection on a pin |83 supports a pres
65 sure rollen` |84 on a stud |85 at its outerïenrl,
while a stud |88 secured to the base member 95and passing'through a hole in the yoke above
which it is provided with >a coil spring |81 and
wing nut |88 is adapted to alter pressure 4of the
roller.
.
>
The pinker 94 is -not shown fully in the plan
views since it is used only sometimes, vand be
cause it would confuse the other details. ¿How
ever, it is shown there by dot and dash lines |89,
75 for it is merely necessary to take Jthe device
The upper. part of the tunnel ory housing ,desig
nated as the convexity ‘I |1' causes a retarding in y
the~ feeding of the stripby‘slightly holding back
the previously opened spring in the pocket, which 60
in turn provides an automatic positioning of the
spring to be opened and gives the beater sufi'lcient
timeto turn the spring in the pocket. :.li‘heY length
of the tunnel or housing is approximately twice
the diameter of the coil spring.
‘
'
Thë'pin connection |28 on the -hub |2| which
provides a free pivotal >connection for the straps
I_I5 ’so that they travel` in Extended position by
centrifugal force, allows the straps toI yield or
lay backi the spring should be .caught inthe
poclìtetà |8,~~and- the curved walls.||1 and_||8 fa
cilitate turning the springs. Thus, either or both
these structures overcome wear andtear on the'I
fabric strip. Further, the >travelling instrumen
-tality ||_5 working in one direction'on only-> one~
4
2,118,457
side of the strip causes less pull and strain on - the spring turning device
as the strip passes
the fabric than some previous proposals working from the outlet side of the||2
machine.
and travelling on two sides of the strip.
.The upper puller feed roll 11 may be lifted while
Movement of the fabric through an equivalent
90 degrees while turning the spring from the
contra-axial into the axial position is prevented
by general holding of the loaded strip by the
main conveyor 20 and puller feed 68, and by the
axially disposedsprings sliding upon the angular
10 facing |24 of the table ||3.
Operation of the complete machine is prefer
ably accomplished with a single electric motor
|25 or other prime mover below the machine
connected to a source of power |26 having a
16 switch |21 and cord |28 adapted to drive a belt
|3| extending to a main drive pulley |32 on the
end of the main drive shaft 82 on the sewing
machine 25, and a second pulley |33 adapted to
drive a second belt |34 to an intermediate pulley
_|35 on an intermediate shaft |36 mounted on a
of stitching, and then with the novel spring turn
ing instrumentality `of the present invention
change the spring from a contra-axial to the 25
||5 in the manner hereinbefore described. Thus,
the one prime mover through the belt |3| is
adapted to operate the feeding dog 30 and re
ciprocate the needle 28 in the sewing head, and
axial position in the individual pockets. The
feeding elements are so positive, and the co
action of the function performing parts so satis
factory, that output of the present machine is
the eccentric |0| on the forward end to drive the
limited only by the speed of the preparatory coil
winding and inserting machines.
Operative parts of theconveyor belts 4| and
through the main drive shaft 82 thereof operates-
connecting rod |00 and impart uni-directional
movement to the pinker 84, and through the ec
centric 8| on the rear end thereof operates the
"Y connecting rod 80 to impart unidirectional move
ment to the set of feed rolls 15 and 11 and to
56 are located under the arm of the sewing ma
which is a great help to make the machine and 35
the’installation very compact. _In other words,
the Astrips loaded with springs pass to the right of '
the line of stitching as viewed in Fig. 2, which
second belt |34 drives the interm diate belt |38
and shaft 83 to straighten the fabriçc with the belt
80, and to change the position of the springs
,helps to keep the strips under better control rela
tive to the sewing.
I8 within the pockets I8 with the beater straps
The structure of the present invention is so`
arranged that it accommodates pockets of various
lengths and coils of >various diameters. To this
end the guide 38 is made with a loose- part 38j
(see Fig. 4) adjustable in width through the
| i5.
‘
`
A slip clutch |40 is provided intermediate the
pulley |28 and the armature shaft |4| in order
to quickly break the driving connection and to
quickly start it again by merely stepping on the
pedal 22. A suitable linkage |42 is provided be-`
tween the pedal 22 and clutch |40 to intermit
tently start and stop operation. 'I'he speed of
the machine is adjustable with the slip clutch
from a minimum or zero to maximum by the foot
to hook into the apertures |45 in the top face
of the table 33 and to be locked in the desired
set of slots for the various widths when a wing .
nut |41 secures the two guide parts 38 and 38’
together.
or lowered to accommodate contra-axially dis- ,
60 springs I8 inserted in each of the pockets | 8 in
to build up a _considerable surplusage of loaded
strip, and then the _leading edge of the loaded
strip is passed onto the table 33, thence lunder
the roller 38 and through ,the guide. 38 to be
straightened and guided thereby to the other~
main operating parts. Next the leading edge is
x moved onto the top run ofthe lower belt 4|v and
under the angular stretch y12 of the upper belt
.58 to be gradually compressed by the angular
run 12, and into the confining area between the
two belts, thence running, by slow power if pre
ferred, to the sewing mechanism 25 and to the
:sov
The relationship of the open side of the strip
is always the same in connection with the needle
and puller feed, andconsequently the rear plate'
38' of the guide -38 is the only one that need be 55
changed. As pointed out hereinbefore, the upper
belt- 56 of the main conveyor 20 may be raised
the following steps occur: the woven fabric strip
|2 or a-n otherwise formed pocketed strip has coil
contra-‘axial position, either by hand or by one
of the now well-knownlspring inserting machines ‘
40
provision of tongues|46 on the loose part adapted
pedal control which can be moved at the will of
the operator, and gives the operator an oppor
tunity to either speed up the work of the sewing
unit or slacken it down asvthe occasion demands.
In using the machine of the present invention
~
30.
chine and arm of the puller feed mechanism I8-,
'the interconnected main conveyor 20, while the
45
nected to the roller yoke 18. Theopen side |6 of
the strip may be led over the straightening place
88 and onto the pinker device 84 as the strip is
initially passed to the main conveyor 20, or these 10
latter two devices may be moved into operative
position after the leading edge of the loaded strip
has passed through the entire machine.
When the strip is properly started and the
motor actuated by closing the switch |21, it is
merely necessary to step on the clutch lpedal 22
in order to cause the machine of the present
invention to successfully and in combination per
_form the various operations ,hereinbefore de
scribed in detail; viz, straighten the springs ln
the lips, trim the open side thereof, form a line
the. intermediate shaft to a large pulley |38 on
the drive shaft 83. This latter shaft operates the
25 fabric straightening belt 80 and the beater straps
40
actuating a pedal |43 and chain |44 connection
with a conventional lever lift (not shown) con
the pockets, guide the loaded strip, straighten’ 20.
set of double standards |31 and drive an inter
mediate belt |38 from a small pulley |38' on
30
starting the strip through stepping upon and
.
posed springs of greater or less length.
Similarly, the housing ||4 of the spring turn 60
ing device ||2- is adapted to be adjusted for
springs of various lengths by the provision of an
connection |49 including a recess |50
in the housing part v|5| adapted to receive a
' interfitting
of the housing, 65
and a slot |53 on the tongue adapted to receive
a key |54 on the convex member ||1. A stud |55
on the latter member passing through elongated
slots |56 and |51 locks the various parts together
when a wing> nut |58 is tightened. The housing 70
is also adjustable in .height to accommodate
various diameter springs by the provision of sub
stantially L-shaped straps |58 with fingers -|60
76 _puller feed mechanism 68, andsubsequently to> adapted to enter any one of a plurality of ver
tically spaced notches |6| to support the hous u
5
2,113,457
roller frame adapted to impart an angular and
parallel run to one belt relative to the other
|63' in feet |64 thereof to hold the housing to the _ belt for first partially .compressing and for then
fully compressing the spring in the' pocketed
>table in its various widths and heights.
rVariations and modifications may be made strip; and means adapted to support the upper»
within the scope of the present invention, and belt ‘and roller frame in various >planes and
portions of the improvements may be used with- ` heights relative to the other belt.
6. An instrumentality for turning coil springs
out others.
»
in the pockets of a strip, comprising a stationary
I claim:
l
housing having a substantially rectangular open
1. In a machine for closing a pocketed stri
ing adapted to receive the spring loaded strip;
with coil springs in the pockets thereof, the com
bination of a sewing head; a pair of endless belts moving means cooperating with said housing to
adapted to compress the springs in the pockets turn the coil springs from a contra-axial into
f and to advance the strip to the sewing head; a an axial position in the pockets; and means for
15 support at the entrance side of the machine over 'enlarging the opening in said housing both ver
which the loaded strip passes to the pair of tically and horizontally to accommodate various
sizes of strips and coil springs.
endless belts; and an inverted U shape shell asso
7. An instrumentality for turning coil springs
ciated with the support adapted to align the'
springs relative to the pockets and strip prior to in the pockets of a strip, comprising a stationary
housing adapted to receive the spring loaded
20 compression thereof by the endless belts.
2. In a machine for closing a pocketed strip of strip; curved walls within said housing; and
fabric having an open side with an upper and a> moving means cooperating with said curved walls
within the housingïto'turn the coil springs from
lowerfree lip, andhaving coil springs in the in
ing at various heights relative to the table IIS,
and provided-with elongated slots |62 and screws
5
10
15
20
dividual pockets thereof, the combination of a ' a contrasaxial into an axial position in the
sewing head; means for directing and moving the
open side and free lips of the pocketed- strip with
coil springs to the sewing head, to be closed
thereby; a plate adapted to straighten the upper
free lip; and a driven belt adapted to straighten
30 the lower free lip, prior to `operation on the strip
by the sewing head.
3. In a machine for closing a pocketed strip
of fabric having an open side with free lips and
coil springs in the individual pockets thereof, the
35 combination of a pocket closing element ;` means
for directing and moving the open side and free
lips of the strip to the pocket closing element;
pockets.
_
25
.
8. In a machine for turning coiled springs in
a pocketed strip, the combination of a housing
adapted _to receive said pocketed strip; and a_
beater mechanism cooperating with said housing
to turn the springs from a contra-axial to an 30
axial position within the individual pockets of the
strip.
f
9. In a" machine for turning coiled springs in I
a pocketed strip, the combination of a housing
adapted to receive said pocketed strip; acon 35
veyor for advancing the loaded pocketed strip
to the housing; and a beater mechanism coop
erating with said housing to turn the springs
and means adapted to positively move the free
lips from an improper folded back position to a
from a contra-axial to an axial position within
proper ñat position prior to the operation thereon
by the pocket closing element.
the individual pockets of the strip.
40
10. In a machine for turning coiled springs in
a pocketed strip, the combination of a housing
4. In a machine for closing a pocketed strip
adapted to receive said pocketed strip; and means '
individual pockets thereof, the combination of a ' cooperating with said housing to'turn the springs
from a contra-axial into an axial position within 45
sewing head; a pair of endless belts for convey
with coil springs contra-axially disposed in the
45
ing the loaded strip to the sewing head; and a the individual pockets of the strip.
11. In a machine for turning coiled springs
roller frame adapted to impart an angular and
parallel run to one belt relative to the other belt in a pocketed strip, the combination of a hous
for first partially vcompressing and .then fully ' ing adapted to receive said pocketed strip; a
compressing the spring in the pocketed strip.
5. In a machine for closing a. pocketed strip
with coil springs contra-axially disposed in the
individual pockets thereof, the combination of
a sewing head; a pair of endless belts for con-`
55 veyin‘z the loaded strip to the sewing head; a
conveyor for advancing the loaded p'ocketed strip :sol
to the housing; and means cooperating with said
housing to turn the springs from a contra-axial
into an axial position within the individual pock- ` '
ets of the strip.
A ^
-FREDERICK F.V ZE’IIER.
55
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