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Патент USA US3020940

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Feb. 13, 1962
E. PFARRWALLER
3,020,930
HEALD FRAMES AND GUIDES THEREFOR IN LOOMS ‘FOR WEAVING
Filed June 20, 1960
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INVEN TOR.
EE’W/NPF'AEE W?LLEE.
BY
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4 TT'OIPNEK
United States Patent G??ee
3,020,930
Patented Feb. 13, 1962
1
2
however, would require an increase of the distance be
tween juxtaposed heald frames which is not desired, and
would require rebuilding of existing machines to be
adapted to the widened stays. With the arrangement
according to the invention, merely the lateral stays of
the existing heald frames must be changed when it is de
sired to provide bores for a heald alignment tool in an
3,020,930
HEALD FRAMES AND GUIDES THEREFOR
1N LGOMS FGR WEAVING
Erwin Pfarrwaller, Winterthur, Switzerland, assignor to
Sulzer Freres, S.A., Winterthur, Switzerland, a cor
poration of Switzerland
Filed June 20, 1960, Ser. No. 37,264
Claims priority, application Switzerland Mar. 31, 1960
4 Claims. (Cl. 139-82)
existing loom, without abandoning individual guidance
of the heald frames or increasing the distance between
10 the frames.
In a preferred embodiment of the invention, the lat
eral stays have a U-shaped cross sectional con?guration
whereby the legs of the U are ?ared in the direction
from the web of the stay towards the free ends of the
The present invention relates to heald frames and
guides therefor in a loom for weaving. Each heald
frame includes an upper and a lower frame bar and lat
eral stays interconnecting the ends of said bars. Guides
are provided engaging the stays for guiding. the vertical 15 lateral parts thereof. The ribs of the co-mblike guide
element which extend into the grooves of the stays have
up and down movement of the heald frames.
a corresponding wedge shaped cross sectional con?gura
In conventional heald frames, the stays connecting the
tion. When producing a U-pro?le of the type described,
ends of the upper and lower frame bars are formed by
the punch, for example of a press for making the stays,
a solid rod which extends into grooves of a stationary
can be easily removed from the finished stay. Manu
guide element. The number of grooves in the guide
facture of the guide comb is also facilitated by the wedge
element corresponds to the number of heald frames to
be guided.
like cross sectional con?guration of the teeth or ribs of
In another conventional heald frame, the lateral stays
are provided with bores which are parallel to the upper
the comb. According to the invention, the latter is pref
erably made of synthetic material, for example polyplast,
and lower frame bars and through which a spindle of a 25 as for instance a polyamide which may be used pure or
provided with ?lling material.
tool for accurately positioning the healds prior to thread
ing the healds may be inserted. These bores necessitate
a widening of the stays so that their rigidity is not im
paired by the bore. Stays of this type which are rather
The novel features which are considered character
istic of the invention are set forth with particularity in
the appended claims. The invention itself, however, and
thick are placed adjacent to one another and contact one 30 additional objects and advantages thereof will best be
understood from the following description of embodi
another so that the vertical movement of the heald frames
ments thereof when read in connection with the accom
is not guided individually. A package of heald frames
is usually vertically guided whereby the guide can be
adjusted to take care of a greater or lesser number of
juxtaposed heald frames.
panying drawing, in which:
FIG. 1 is a side elevation of a package of heald frames
35 vertically guided according to the invention.
vided with stays which have a groove or recess for re
FIG. 2 is a large scale horizontal sectional view of
the left end of the heald frame package shown in FIG.
ceiving corresponding protuberances on a stationary
guide element. The stays preferably have a U-shaped
line II—-II in FIG. 1.
The heald frames according to the invention are pro
cross sectional con?guration whereby a bore can be pro
vided in the web portion of the stay without substantially
impairing strength and rigidity of the stay and without
requiring widening of the stay and abandoning individual
vertical guidance of the stay. With the structure accord
1, and of a guide therefor, the section being made along
40
FIG. 3 is a horizontal sectional illustration of a modi
fled end stay and guide therefor according to the inven
tion.
Referring more particularly to FIG. 1 of the drawing,
numeral 1 designates a heald frame or shaft consisting
ing to the invention, it is not necessary to increase the 45 of an upper frame bar 2, a lower frame bar 3, and stays
4 and 5 interconnecting the ends of the bars 2 and 3.
spacing between the heald frames. It is desired that the
The bars 2 and 3 are also interconnected by means of
entire package of heald frames in a loom for weaving
an intermediate stay 6. Shaft staves 8 for supporting
is as thin as possible. With the structure according to
healds 9 of which only a few are shown, are individual
the invention, a package containing a rather large num
ly connected to the bars 2 and 3 by connectors 7. The
ber of heald frames is not unduly thick, because the spac
warp threads are drawn through eyes, not shown, in the
ing between the individual heald frames is very small.
healds 9 which eyes are all located along the center line
Individual guidance of the heald frames is desired be
1-1 of the heald frame. The heald frames are individ
cause, in this case, movement of the frames is not af
ually supported by elements 12 connected to the lower
fected by the juxtaposed frames. There is no frictional
frame bar 3 and actuated by a shedding mechanism, not
engagement between the stays at the ends of the frames
shown.
and no premature wear of the latter which is of par
The stays 4 and 5 at the ends of the heald frame are
ticular importance in modern weaving machines which
formed of channels, a bore 13- being provided in the web
operate at a very high speed. If the vertical movement
14 at the elevation of the line II—~II in FIG. 1 for in
of each individual heald frame is guided, the accuracy
of the guiding effect is improved. If individual guid 60 serting a spindle 15 for positioning the healds so that
the threading can be done by machine. The ?anges 16
ance for the heald frames is provided, individual frames
of the channels are flared in the direction from the web
may be removed or added to suit different requirements
14 toward the free ends 17. Ribs 18 forming part of
when weaving different types of fabric. It is not neces
a comblike guide element 19 and having a wedge-shaped
sary to provide adjusting means for the guide as is re
quired when the guide is used for guiding a plurality of 65 cross sectional con?guration extend into the channels.
The distance 0 between the center lines of two juxtaposed
juxtaposed and adjacent stays.
heald frames 1 should be as small as possible. This
In the conventional structure in which the stays at
distance is de?ned by the type of the weaving machine,
the ends of the heald frames are rather thick in order
particularly by the type of the shedding mechanism actu
to permit insertion of a heald positioning device as is
necessary when using a machine for threading the healds, 70 ating the heald frames and cannot be changed without
the stays may be individually ‘guided in gaps between
the teeth or ribs of a comblike guide element. This,
considerably rebuilding the machine.
It is obvious that the ?anges 16 of the channels form
3,020,930
3
4
ing the end stays of the heald frames need not be ?ared
as shown in FIG. 2 but can be arranged parallel, if de
sired. In this case, the ribs 18 of the comb 19 would
have to have a rectangular cross sectional con?guration
which can be obtained by milling the gaps between the
dividually extending into the grooves formed by said
portions of U-shaped cross sectional con?guration.
ribs of the comb.
FIG. 3 illustrates a modi?ed cross sectional con?gura
of said comblike guides having a correspondingly shaped
wedge-shaped cross sectional con?guration.
tion of an end stay 4' which has substantially the shape
of an H and whose ?anges 22, 23 are parallel. The
groove formed by the outer ?anges receives a rib 18’
wherein said comblike guides are made of a synthetic
having parallel lateral surfaces 21' of a cornblike guide
element 19’. The lower and the upper heald bars are
inserted in the recess formed by the inner ?anges 23.
I claim:
1. In a weaving machine, a plurality of heald frames, 15
each frame including an upper and a lower frame bar
and lateral stays interconnecting the ends of said bars, and
2. In a weaving machine as de?ned in claim 1 and
wherein said stays have a U-shaped cross sectional con
?guration, the legs of the U being ?ared, the rib portions
3. In a weaving machine as de?ned in claim 1 and
polymeric plastic material.
4. In a weaving machine as de?ned in claim 1 and
wherein said stays have a web portion connecting the
legs of the U, a bore being provided in said web por
tion for introducing therethrough a tool for positioning
the healds prior to threading the healds.
References Cited in the ?le of this patent
comblike guides for vertically guiding said stays, said
UNITED STATES PATENTS
stays having at least a portion of U-shaped cross sec
tional con?guration, said guides having rib portions in 20
2,510,404
Lake et al. ___________ __ June 6, 1950
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