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Патент USA US2132078

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Oct. 4, 1938.
2,132,078
|_. R. LINN
HAND LOOM HEDDLE SHIFTING DE-VICE
Filed March 16, 1938
3 Sheets-Sheet 1
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INVENTOR
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ATTORN EYS
Oct. 4, 1938.
2,132,078
L. R. LINN
HAND LOOM HEDDLE SHIFTING DEVICE
5 Sheets—Sheei 2
Filed March 16, 1938
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ATTORNEYS
Oct. 4, 1938.
2,132,078
|_. R. LINN
HAND LOOM HEDDLE SHIFTING DEVICE
Filed March 16, 1938
5 Sheets-Sheet 3
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INVENTOR
4
ATTORNEYS
Patented Oct. 4, 1938
_ 2,132,078?
UNITED STATES PATENT OFFICE
.
7
2,132,078
HAND LOOM HEDDLE SHIFTING DEVICE
I
Leroy R. Linn, Sheboygan, Wis.
Application March 16, 1938, Serial No. 196,276
6 Claims. (01. 139-33)
This invention relates to-' hand loom heddle matter of this invention is shown to comprise a
shifting devices and has for an object to provide disc I!) rotatably mounted on a shaft ll carried
a device for facilitating easy and simple shifting by the horizontal cross bars l2 of the harness
of the heddle frames.
_
frame, there being one of these discs for each
A further object is to provide a device of this heddle frame, four of such discs being shown in
character having an automatic lock in the upper
position of the heddle frame.
‘
A further object is to- provide a device of this
character having means for releasing the heddle
frames to gravitate to their lower position.
A further object is to provide a device of this
character having means for securing the device
in an intermediate position for relieving tension
on the warp while the loom is not in use.
With the above and other objects in view the
invention consists of certain novel details of con
Figures 1, 2 and 3. Each disc is provided with a
groove l3 in the periphery extending about an
angular distance of 180 degrees and a pair of
cables M are secured at one end to a common pin
l5 ?xed at one end of the groove. The ends of 10
the cables are secured to the top of a respective
heddle frame I5, near the ends thereof, and since
the disc is located adjacent to one of the harness
frame uprights it‘ one of the cables is compara
tively short and is connected direct to one end of 15
the heddle frame while the other cable is com
struction and combinations of parts hereinafter ‘ paratively long and is trained over a guide pulley
ll secured to the harness frame bars l2.
that various I modi?cations may be resorted to
Each disc is provided with a radially extending
fully described and claimed, it being understood
within the scope of the appended claims without
departing from the spirit or sacri?cing any of the
advantages of the invention.
In the accompanying drawings forming part of
this speci?cation,
'
_
Figure 1 is a cross sectional view of a handloom
embodying a heddle frame shifting device con
structed in accordance with the invention.
Figure 2 is a side elevation of the parts shown
in Figure l.
30
-
Figure 3 is an enlarged plan view of the heddle
frame shifting devices, pawls for holding the
heddle frame at their upper limit of movement
and trip for releasing the pawls to permit gravi
tation of the heddle frames.
CO CI!
Figure 4 is a detail side elevation of the parts
shown in Figure 3.
_
Figure'5 is a detail side elevation showing the
yoke for holding the heddle frame shifting de
vices in an intermediate position for relieving
40 tension on the warp when the loom is not in use.
Figure 6 is a fragmentary front elevation of the
heddle frame releasing devices for an eight hed
dle frame loom instead of a‘ four heddle frame
loom.
Figure 7 is a fragmentary side elevation of the
parts shown in Figure 6.
Figure 8 is a detail side elevation of a modi?ed
form of the invention in which a single pawl is
employed to automatically look all of the heddle
frame shifting devices in position to ‘hold the
frames raised.
Figure 9 is a detail perspective view of the pawls
shown in Figure 8.
Referring now to the drawings, the heddle
55
frame shifting device comprising the subject
handle i8 by means of which the disc may be
rotated to wind the cable M on the disc and raise
the respective heddle frame or to unwind the
cables to lower the heddle frame. The handle
engages a stop bar l9 on the harness frame to
limit downward movement of the heddle frame.
25
As best shown in Figures 4 and 5 each disc is
provided in the periphery with a shoulder 20 -
adapted to be engaged by a respective pawl 2|
which is pivoted above its longitudinal center
upon a shaft 22 which’issecured to the harness 30
bars I2. When each disc is individually swung
to wind up the’ cables and raise the respective
heddle frame the respective pawl will be pulled
against the shoulder 29 by a spring ll connected
with the upper-end of the pawl and will automati
cally lock the respective heddle frame at its upper
limit of movement.
A trip 23 in the nature of an inverted U-shaped
bar, best shown in Figure 3, is pivoted at the ends
on the shaft H and the cross member of the trip
bears lightly upon the spring retracted pawls 2|.
When the handle it of any one of the discs is
forced against the cross member of the trip, it
will be rocked on the shaft H to simultaneously
release all of the discs and allow the heddle 45
frames to gravitate to the lowest limit of move
ment.
‘
In order to relieve tension on the warp- while
the loom is not in use a yoke 24 is pivoted at the
ends on the harness frame bars 12 as shown at
25 in Figures 1, 3 and 5. The cross member of
this yoke is adapted to be engaged against the
shoulders 20 of all of the discs when the discs are
rotated to an intermediate position of their travel
and lock the discs in this position to hold the 55
2,132,078
2’.
‘raised position of the frames, and means for re
leasing said pawls to permit the frames to gravi
half the limit of their vertical movement.
‘While a four heddle frame operating device‘
3. In a loom, the combination of heddle frames,
has been described it is obvious that a greater
harness bars, axially aligned peripherally grooved I
number of heddle frames may be operated by sim
discs rotatably secured to said bars above said
ilar devices and as best shown in Figure 6 to
heddle
frames, cablescarried by each disc wind
convert a four heddle loom into an eight heddle
loom it is simply necessary to provide brackets 2'5 able upon the disc and connected to a respective ‘
heddle frame for raising and lowering the heddle
which may be secured to the edges of the harness
frame when the disc is turned, a. gravity operated 10'
frame uprights it by straps. 28. which are se
cured in- place by screws 29. The harness frame pawl common" to all of the'discs, shoulders on
the discs engageable by said pawl to hold the
horizontal ‘bars H! are then mounted on the edges
heddle frames raised to a point substantially one
tate.
of these brackets, as best shown in Figures. 6 and.
7. Since the heddle frame operating devices ‘in
" this embodiment of the invention are‘ identical
with the heddle frame operating devices previ
ously described they have been given identical
reference characters.
'
,
r
discs stationary at one limit of movement .to
maintain the heddle frames, raised,.and means
for releasing saidpawl to permit the discs to
rotate in a retrograde direction simultaneously
and. permit the heddle frames to gravitate.
4. The combination with the heddle frames
A modi?ed form of the invention is shown in, 7 and the harness bars of a loom, of axially aligned
Figures 8 and 9 and this form of the invention
is somewhat simpler than the previously de
scribed construction. In this modi?ed form of
the invention each, disc 3| supports a pair. of
cables 32 for raising and lowering the respective
heddle frame. The disc is provided with a handle‘
33 and at a- point adjacent the handle 'is-lpro
vided with a stop shoulder 34. A single pawl 35
best shown in Figure 9, of the gravity operated
type is pivotedv below its longitudinal center upon
30' agshafr-t. 36 which is secured at the ends to the
horizontal harness, frame bars 31. rIfhe pawl en
gages against the stop shoulder of any disc which
may be rotated. to‘ raise its corresponding heddle
frame and hold the heddle frame raised.
Each disc is provided in advance of the stop
shoulder with a- camvprojection. 38. By rotating.
any one of the discs until its. cam projection 38
strikes against the pawl, all of the discs previ
ously locked in a position to hold their respective
heddle frames raised, will be simultaneously re
leased.
-
'
‘
From the above description. it is. thought that
the construction and operation of the invention
will be fully understood without further explana
.
tion.
-
What is claimed is:
,
1. In a loom, the combination with heddle
frames and horizontal cross bars of a harness
frame, of a plurality of axially aligned discs ro
ztatab-ly secured to said bars each disc havinga
grooved peripheryi, a pair of cables secured in the’
groove of the periphery and connected to a re
spective heddle frame for raising and lowering
-
the frame when the disc is rotated, means carried
by
said bars and engaging the discs-to automati
55'.
cally lock the discs- stationary to- hold the heddle
frames raised, and means for releasing said
means simultaneously to permit the heddle
frames to gravitate.
'
.
7
,
2.v In a loom, the combination with heddle
frames and harness bars, of a plurality of axially
aligned discs superposed above the heddle frames
and rotatably secured to said bars, a pair of cables
connected to each disc and to a. corresponding
heddle frame and adapted to be wound on the
65
periphery of the disc or unwound therefrom to
respectively raise or lower said heddle frame,
60'
each disc having a stop shoulder formed on the
periphery thereof, spring pressed pawls con
nected to said bars and‘ adapted to engage said
shoulder to hold the discs. stationary pin the
discs rotatably mounted on the harness bars
above respective heddle frames, cables carried
by each disc and windable thereupon when the
disc is rotated, the lower ends of. the cablesbeing
connected to the upper corners of a respective
heddle frame, guide pulleys carried by the bars
over which'the cables are trained to maintain the
heddle frame level, each disc having‘a stop shoul
der on the periphery thereof, pawls carried by
said bars and engageable with said shoulders to
hold the discs stationary at one limit of move
ment' to hold the heddle frames raised, and an
inverted U-shaped trip pivotally connected to
said bars and adapted to impinge against said
pawls and release the pawls simultaneously from
said shoulders to permit the heddle frames to .
gravitate.
UL
_ - i
5. The combination w'th-the heddleframes and
harness bars of _a loom, of axially aligned ro
tatably mounted discs carried by the bars above
respective ones of the frames, cables windable 40'
upon the‘ discs and connected to respective hed- '
dle' frames for raising and lowering‘ the'frames,
shoulders on the discs, pawls connected to said
bars and engageable with the shoulders for hold
ing the discs stationary tomaintain the heddle
frames raised to their upper limit of movement,
trip means carried by, the bars engageable with
the pawls for releasing the pawls to permitthe
frames to gravitate, and means carried by‘ the
bars engageablewith said shoulders When the
discs are in a substantially midway position of
their movement for holding the heddle frames
raised» to substantially one-half their, limit, of
vertical movement to relievetension on the warp».
when the loom is not in use.
6. The combination with the heddle. frames
and harness bars of a loom, of axially aligned
discs rotatably secured to said bars above re
spective ones of the heddle frames, cables wind-4
able upon the discs and connected to said heddle 60
frames for raising an'dlowering the heddle frames
when the discs are rotated, shoulders on the discs,
pawl means engageablewith said shoulders for
holding the discs stationary at one limit of move
ment to maintain'the'heddle. frames raised, and
cam projections on the discs in advance of said
shoulders,>rotation of anyone of the‘ discs until
its cam projection strikes against said. pawl
means releasing said means'to-permit the heddle
frames to gravitate.
LEROYR. LINN.
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