Improvements in Stop or Loose Reed Mechanism for Power Looms.
Year: 1888

page_text: Date of Application, 26th Dec., 1888
Complete Specification Left, 26th Oct., 1889--Accepted, 30th Nov., 1889
PROVISIONAL SPECIFICATION.
Improvements in Stop or Loose Reed Mechanism for Power Looms.
I, LUDWIG POVEL, of Nordhorn, in the Kingdom of Prussia, German Empire,
Manufacturer, do hereby declare the nature of this invention to be as follows :-
The stop or loose reed mechanism used in power looms has for its object to
prevent the shuttle when it is accidentally trapped or arrested in the shed from
being forced by the advancing reed through the threads of the warp thereby tearing
the latter.
The devices hitherto in use consist either of a stop rod motion for preventing,
when the shuttle has been arrested by accident in the shed, the lathe with the reed
from further forward motion by causing the catches or tongues to strike against the
buffers or frogs mounted on the frame; or of a loose reed also called flying reed
by which owing to the pressure exerted by the reed against the arrested shuttle, the
reed is forced out from the lathe.
The stop rod motion is used in the manufacture of heavy and wide fabrics, whilst
the loose reed is employed in the manufacture of light and narrow fabrics, because
in manufacturing strong and broad fabrics too heavy a pressure must be exerted
against the shuttle for ejecting the reed, in consequence whereof the threads of the
warp would always be torn.
My invention has for its object to remedy those inconveniences by disengaging or
ejecting the reed from the lathe by means of a device similar to the stop rod motion
in lieu of using for this purpose the pressure exerted by the reed against the arrested
shuttlo S.
The shuttle boxes are provided as in the usual stop rod motion with swells or
shuttle brakes K. (see figs. 1 and 2) which are forced rearwards (in fig. 1 towards
the left side) by the shuttle S entering the box.
Upon the swell rests the ordinary prong or nipping lever L which is firmly
connected to the stop rod T₁ situated on the lay beam.
The stop rod T₁ carries the catches or tongues W welded thereto (see figs. 1
and 2). When the shuttle is arrested in the shed, the corresponding swell and con-
sequently also the prong L and the stop rod T, are not moved, the catch W rests
in its lowest position (see fig. 1) and strikes, when the lathe swings forward,
against the frog or buffer F, which is fastened here, not as is usual to the frame,
but to an arm or lever J movable about the pivot or pin J¹.
By
The arm J is therefore pushed forward by the catch W acting on the frog F.
means of the anti-frictional roller R secured to the arm J, and of the incline of the
lever H, the said lever H, the pivot or fulcrum of which is at H2, is raised and in
consequence also the lever H¹ which bears upon the lever H and is secured to the
shaft M of the reed pressing levers V V.
These levers V which are ordinarily used also in other looms carry as usual the
rail holding the lath of the reed fast to the lathe. When the lever H' moves
upward, V and V1 (see fig. 2) are moved backward, whereby the reed is set free from
the lathe and cannot press any longer against the arrested shuttle.
In order that the shuttle shall not have to overcome the entire resistance of the
reed, the rail V is provided with small hooks which at the back stroke of V draw
the reed back from the lathe. The employment of these small hooks is especially
necessary in cases in which very fine warps are being woven in hollow form in wide
looms having heavy reeds. The dotted lines shew the known parts usually applied
to each loose reed by means of which the reed is held fast in the lathe when striking
against the edge of the fabric. My invention may also be applied to loose reeds in
which the lower lath of the reed is not arranged in such a manner that it can be

page_text: disengaged (as in figs. 1 and 2), but in which the upper lath in the lay top is
capable of being disengaged as shewn in figs. 3 and 4, in which the corresponding
parts are marked with the same letters of reference as in figures 1 and 2.
Finally the loose reed mechanism may be arranged in such a manner, that when
the shuttle is accidentally arrested both the lower and the upper laths are disengaged
from the lathe and that the reed, às illustrated in fig. 6, is entirely thrown out of
the lathe. This modified construction is illustrated in the figures 5 and 6.
The parts K, L, T₁, W, F, R, J work in the same manner as described above and
shewn in figures 1 and 2, also the lever H which is provided in this case with an
adjusting device for altering its stroke, works in the same manner.
The pressing
levers and the pressing rail V₁ of figs. 1 and 2 are replaced in figs. 5 and 6
by a vertically up and down movable rail E, which is guided on the lathe between
the lay beam and a second rail T. E is extended downwards and carries here an
antifrictional roller E against which may press the lever H. When the shuttle is
stopped in the shed and the catch W strikes against the frog F and moves thereby
the lever J forward, its anti-frictional roller R presses the lever H downward. The
lever presses El and E downwards, the lower lath of the reed is set free, and the
upper lath which is not held by the lay top D in the vertical or downward direction
is also set free so that the reed, as shewn in fig. 6, is completely thrown out from
the lathe. During the normal working of the loom the rail E is held by the spring G
in a raised position. From what has been said with reference to Figs. 5 and 6, it
is clear that the downward movement of the rail E may also be effected by means
of a protector tongue" which strikes against a fixed frog. Fig. 7 illustrates a
.modified construction of the device represented in figures 5 and when the pressing
rail E is not applied to the lower lath of the reed, but to the upper one or to the
lay top D.
The letters of reference indicate here the same parts as in figures 5 and 6.
By this new loose reed mechanism it is possible to use power looms having a looso
reed in the manufacture of both the lightest and the beaviest fabrics.
Dated this 28th day of December 188s
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Stop or Loose Reed Mechanism for Power Looms.
I, LUDWIG POVEL, of Nordhorn, in the Kingdom of Prussia, German Empire,
Manufacturer, do hereby declare the nature of this invention and in what manner
the same is to be perforined, to he particularly described and ascertained in and by
the following statement :-
The stop or loose reed mechanism used in power looms las for its object to
prevent the shuttle, when it is accidentally trapped or arrested in the shed, from
being forced by the advancing reed through the threads of the warp and thereby
tearing these threads.
The devices hitherto in use for this purpose consist either of a stop rod motion for
preventing, when the shuttle has been arrested by accident in the shed, the lathe.
with the reed from further forward motion by causing the catches or tongues to
strike against the buffers or frogs mounted on the frame; or of a loose reed, also
called flying reed, by which owing to the pressure exerted by the reed against the
arrested shuttle, the reed is forced out of the lathe.
The stop rod motion is used in the manufacture of heavy and wide fabrics
because in manufacturing such fabrics the pressure necessary to be exerted against
the shuttle to eject the reed would be sufficient to tear or break the threads of the
warp. The loose reēd is usually employed in the manufacture of light and narrow
fabrics.

page_text: This invention has for its object to disengage or eject the reed from the lathe
by means of a device similar to the stop rod motion, in lieu of using for this purpose
the pressure exerted by the reed against the arrested shuttle.
Figs. 1 and 2 are end elevations partly in section of stop or loose reed mechanism
for power looms constructed according to this invention, Fig. 1 showing the parts
in the positions they occupy just before disengagement of the reed; and Fig. 2
showing the parts in positions they occupy whilst the reed being disengaged.
The shuttle-boxes are provided, as in the usual stop rod motion, with swells or
shuttle brakes K which are forced rearwards (in Fig. 1 towards the left side) by
the shuttle S entering the box. Upon each swell rests the ordinary finger or
nipping lever L which is firmly connected to the stop rod T¹ carried by the lay
beam. This stop rod T has secured thereto a catch or tongue W. When the
shuttle is arrested in the shed, the corresponding swell and consequently also the
finger L and the stop rod T will not be moved, the catch or tongue W will rest
in its lowest position (see Fig. 1) and will strike, when the lathe swings forward,
against the frog or buffer F, which instead of being mounted as is usual, to the
frame of the loom, is according to this invention secured to an arm or lover J
moveable about a pivot or pin J. This arm J will therefore be pushed forward by
the catch or tongue W acting on the frog F and by means of an anti-frictional
roller R secured to the arm J and acting against an incline surface on a lever H,
the pivot or fulcrum of which is at H2 will raise this lever and in consequence also
the lever H which bears upon the lever H as shewn and is secured to the shaft M
of the reed pressing levers V, V, one only of which can be seen in the drawings.
These levers V, which are ordinarily used also in other looms, carry as usual
the rail that normally holds the lath of the reed fast to the lathe. When the
lever H moves upward V and V1 are moved backward (see Fig. 2) whereby the
reed is set free from the lathe and cannot press any longer against the arrested
shuttle.
In order that the shuttle shall not have to overcome the entire resistance of the
reed, I provide a mechanical device adapted to act upon the reed and to aid in with-
drawing it from the lathe. An arrangement for this purpose consists in providing
the rail V with small hooks which, at the back stroke of rail V, will draw the
reed back from the lathe. The employment of these small books is especially
necessary in cases in which very fine warps are being woven in hollow form in wide
looms having heavy reeds. The dotted lines shew the known parts usually applied
to each loose reed by means of which the reed is held fast in the lathe by a spring Z
when striking against the edge of the fabric; these parts may also be used with my
improved stop or loose reed mechanism or they may be dispensed with, the spring Z
being then directly connected to the lever H¹.
→
Stop or loose reed mechanisın according to this invention may also be applied to
loose reeds in which the lower lath of the reed is not arranged in such a manner
that it can be disengaged as in Figs. 1 and 2, but, in which the upper Jath in the
lay top is capable of being disengaged as shown in the modified arrangement
indicated in Figs. 3 and 4 in which the several parts corresponding to those shown in
Figs. 1 and 2 are marked with the same letters of reference.
In Fig. 3 the forward movement of the frog F and lever J, (Fig. 1) will cause
the roller R to depress the lever H and move the levers HV rod V2 and
rail Vinto the positions shewn in dotted lines. In Figure 4 the lever H
which is arranged and operated as in Figs. 1 and 2, acts when raised by the roller R
against the lever V so as to turn the rail V₁ upward away from the upper lath of the
reed.
Figs. 5 and 6 are similar views to Figs. 1 and 2 illustrating another modified
arrangement in which the lever H and roller R shown in Figs. 1 to 4 are replaced
by a bent lever pivotted to the upper end of the lever J, and a stop or pro-
jection ³. With this arrangement when the lever W strikes against the frog F,
the arm J will be moved forward, the lever arm will strike against the stop or

page_text: projection /³ and be turned upon its fulcrum, and the lever arm will raise the
lever and cause_the_disengagement of the rail V from the lower lath of the
reed by the levers V. The operation of this modification is therefore very similar to
that of the arrangement shewn in Figs. 1 and 2.
Furthermore the loose reed mechanism may be arranged in such a manner that
when the shuttle is accidentally arrested, both the lower and the upper laths will be
disengaged from the lathe and the reed, as illustrated in Fig. 8, will be entirely
thrown out of the lathe. This modified construction is illustrated in Figs. 7 and 8.
The parts K, L, W, J, J, F, R, work in the same manner as the similarly marked
parts hereinbefore described and shewn in Figs. 1 and 2; also the lever H, which is
shewn provided in this case with an adjusting device H₁ for altering its stroke is
operated by the roller R on lever J in the same manner as hereinbefore described
with reference to the other arrangements. The pressing levers and the pressing
rail V¹, of Figs. 1 and 2 are however replaced in Figs. 7 and 8 by a vertically
movable rail E, which is guided on the lathe between the lay beam and a second
rail T. The rail E is extended downwards and carries an antifrictional roller E
upon which the lever H can act. The arrangement is such that when the shuttle is
stopped in the shed and the lathe is moving forward the catch W will fall and
strike against the frog F and will thereby move the lever J forward so that its
antifrictional roller R will press the lever fl downward. The lever H will conse-
quently press E¹ and E downward, the lower lath of the reed will be set free and
the upper lath, which is not held by the lay top D in the vertical or downward
direction, will also be set free, so that the reed, as shewn in Fig. 8 will be thrown
completely out of the lathe (Fig. 8). During the normal working of the loom the
rail E is held by a spring G in a raised position.
Fig. 9 illustrates a modified construction of the device represented in Figs. 7
and S, for use where the pressing rail E is not applied to the lower lath of the reed,
but to the upper one or to the lay top D. The letters of reference in this example
indicate the same parts as in Figs. 7 and 8.
Figs. 10 and 11 are similar views to Figs. 7 and 8 but illustrating a modified
arrangement, in which the lever H and roller R shewn in Figs. 7 and 8 are replaced
by a bent lever h² pivotted to the upper end of the lever and a stop ³. With
this arrangement when the frog moves forward the lever arm of the lever h¹²
will strike against the stop ³ the lever will be turned upon its fulcrum, the
lever arm being moved downward; the roller E¹ (as shewn in Fig. 11) will
consequently be drawn downward and the reed lowered.
By the construction of loose reed mechanism hereinbefore described it is possible
to use power looms having a loose reed in the manufacture of both the lightest
and the heaviest fabrics.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is :-
:-
1. In a stop or loose reed mechanism for a power loom, the combination with
mechanism resembling an ordinary stop rod motion and mechanism for releasing
the reed from the lathe when the shuttle has come to rest in the shed, of a frog F,
a roller R, a lever J upon which the frog and roller are mounted and a lever H
adapted to be actuated by the said roller to cause the release of the reed by the
releasing mechanism as described with reference respectively to the arrangements
severally illustrated in Figs. 1 and 2, in Figs. 3 and 4, and in Figs. 7, 8 and 9
of the annexed drawings.
2. In a stop or loose reed mechanism for a power loom, the combination with
mechanism resembling an ordinary stop rod motion, and mechanism for releasing
the reed from the lathe when the shuttle has come to rest in the shed, of a lever J,
a frog F and lever both carried by the said lever J and a stop h³, the
arrangement being such that when the lathe is moved forward whilst the shuttle

page_text: is at rest in the shed, the releasing mechanism will be caused by the lever to
release the reci as described with reference respectively to the arrangements
severally illustrated in Figs. 5 and 6 and in Figs. 10 and 11 of the annexed
drawings.
Datal this I6th day of Antaban 1080
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant: