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Патент USA US2107592

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Feb. 8, 1938.
Filed Jan. 9, 1936
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Patented Feb. 8, 1938
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Jakob Wolfensberger, Bauma, Switzerland
Application January 9, 1936, Serial No. 58,429
In Switzerland January 16, 1935
1 Claim.
(Cl. 139-491)
This invention relates to a weaving loom with
a stationary frame. '
thrust rod 6 is mounted and which moves in the
sliding track II’.
By this device a variation of
According to the invention the beating-up the path described by the beating-up comb 9 is
comb thereof is mounted between the ends of
5 thrust rods each of which is jointed at one end
to a rotary crank and has its other end mounted
in ?oating manner, and one of the longersides
of the resulting substantially ovoid or pearshaped path which the operative part of the
10 comb follows in making a beating-up movement
is arranged to lie within the zone of the shed.
The invention provides, therefore, a simple
means whereby the comb makes its beating-up
strokes in the shed and its return strokes in a
15 path lying outside the shed zone so that weft
can be laid during the return movements, the
time available for the laying being increased or
it being possible to run the loom faster than has
generally been the case hitherto,
The shuttle track is preferably formed by a
rake and the reed of the stationary slay which
also provides a lateral guide for the prongs of
the beating comb.
The invention will now be described with ref25 erence to the accompanying drawing, wherein:
Fig. 1 shows a diagrammatic cross section of
the weaving machine;
Fig. 2 shows a diagrammatic plan (beating
comb in the beating-up position);
Fig. 3 shows a modi?cation of the suspension
for the thrust rods in adjustable sliding guides.
The reed 2 is connected to- the stationary slay
vI. The shuttle track consists of a rake in the
rendered possible.
The method of operation is as follows.
By turning the crank shaft 1, the beating-up
comb 9 describes with the upper ends of the
prongs, a substantially pear-shaped or ovoid
curve ID’ of which the point is located at the
beat-up edge H’ of the woven material. By 10
means of shuttles 16, the track of which being
formed by the reed and the rake, a Weft is in
serted when the shed is open. At the moment
the shuttle passes out of the shed the crank pins
‘l have reached the rear dead centre, the beating 15
prongs It! being in the position before fully en
tering the shed.
Simultaneously, however, the
shed commences to change and the Points Of the
beating prongs 10 are able to follow the lower
warp during the upward movement up to the 20
middle, that is to say, until the two warps meet.
The weft thread is located and held between the
warp threads and is now beaten-up by the comb
9 or beating-up prongs I0, while the shed con
tinues to change completely. The points of the 25
prongs pass closely over the dents of the reed,
the weft is caught by the prongs without fail
immediately after the descending upper Warp
has crossed into the comb. Already before the
front dead centre of the crank is reached (beat- 30
ing position shown in chain dotted lines in Fig.
1) the shed may be opened to such an extent
that the shuttle may again enter. It then has
fOI‘m of guide plates 3 which are Secured at One
35 end in the transverse member 4 and which with
the other ends reach up to dents of the reed 5.
The shuttles used may be of any Standard Shape-
available the period of time corresponding to
half a revolution of the crank shaft for travers- 35
ing the warp, that is to say, unt? shortly before
the rear dead centre is reached. It is thus possi
The thrust rods 6 'are reciprocated by the Crank
pins 7 and rock With tiheil‘ front ends 011 rocking
4O levers 8. Between the ends of the thrust rods
6 is secured the beating comb 9 with the beating
prongs l0. Each prong l0 slides between two
ble to provide for the shuttle about half the time
of operation more than is possible in an ordinary
1o0m_ In other words; with the same time of 40
movement of the shuttle, the crank Shaft may
move about 50% faster_ During the return
guide plates 3 without completely leaving these.
A Sheddmg deylce H’ '2’ '3’ _M and '5 of arty
45 known and suitable construction is arranged in
movement the beating comb, after the comp1e_
tion of the beating, is lowered and then leaves
the Shed_ It then again moves upwardly closely 45
?che usual manner‘ .The ihedfimg motlon fo.rm'
along the reed 2 when the crank approaches its
mg no part of the mventlon 15 shown only m a‘
rear dead centre.
diagrammatical manner.
The suspension of the thrust rods 6 may, for
50 example, also be e?ected as shown in Fig. 3.
In the meantime, however, the
ifsresggiig has been Inserted and the operatlon
The sliding guide n is secured to the shield l3’.
The Present Ponstruc‘imn thus Permlt? of 0b
The screw 20 which is located in the curved slot
taining a considerable increase in efficiency as
n", enables the Sliding guide n to be moved
through a, predetermined amount and firmly
55 clamped. I9 is the sliding block in which the
compared with the usual methods. The warp
material receives an extremely careful treatment,
as it is only combed in one direction.
What I
to secure ‘by-‘U.
:Letters Patent
to which the other end of each o‘firt'he respective
thrust rods is connected, in virtue of which the
is:In a weaving
V vloom‘haying a shed, lastatio?ary
operative end of the prong; of said'comb is caused
rake, a beating-11p comb, thrust mods ‘between the
to move in a pear-shaped path in making ' a
ends of which said. comb is mounted, a shaft hav
ing rotary Qranks to which one end of each of the
beating-up movement, ‘the path lying within the
zone of the shed. i
respective thyiist ,rogis is connected, pivoted links
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