U.S. patent number 3,855,820 [Application Number 05/364,762] was granted by the patent office on 1974-12-24 for arrangement for the manufacture of velour.
Invention is credited to Karl Kohl.
United States Patent |
3,855,820 |
Kohl |
December 24, 1974 |
ARRANGEMENT FOR THE MANUFACTURE OF VELOUR
Abstract
There is provided a novel arrangement and procedure for the
formation of velour. In this procedure there are utilized two
needle beds equipped with latch needles and a set of guide bars for
laying a ground pattern about the needles of each needle bar, and a
third set of guides for laying a weft thread between the two sets
of needles to provide the threads which are thereafter cut through
to produce the velour. The timing of the guides laying the weft
thread is predetermined relative to the timing of the guides laying
the ground pattern.
Inventors: |
Kohl; Karl (Obertshausen,
DT) |
Family
ID: |
5846156 |
Appl.
No.: |
05/364,762 |
Filed: |
May 29, 1973 |
Foreign Application Priority Data
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May 29, 1972 [DT] |
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2226005 |
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Current U.S.
Class: |
66/87 |
Current CPC
Class: |
D04B
23/02 (20130101); D04B 21/02 (20130101); D10B
2501/044 (20130101) |
Current International
Class: |
D04B
23/00 (20060101); D04b 023/00 () |
Field of
Search: |
;66/86-89 |
Foreign Patent Documents
Primary Examiner: Feldbaum; Ronald
Attorney, Agent or Firm: Behr; Omri M.
Claims
I claim:
1. A process of manufacturing velour ware on a Raschel knitting
machine comprising
a. a first needle bed of latch needles,
b. a second needle bed of latch needles located parallel to said
first needle bed,
c. at least two first guides for laying thread about needles in
said first needle bed,
d. at least two second guides for laying thread about needles in
said second needle bed,
e. at least one third guide for laying a weft thread about needles
in said first needle bed and about needles in said second needle
bed said third guide being swingable substantially in the same
plane as said first guides and said second guides and being located
between said first guides and said second guides,
said process comprising
i. laying at least two threads about needles in said first needle
bed by means of at least two first guides to form a first ground
pattern,
ii. laying at least two threads about needles in said second needle
bed by means of at least two second guides to form a second ground
pattern,
iii. laying at least one weft thread about a needle in said first
needle bed and,
a needle in said second needle bed by means of said at least third
guide to provide a weft between said first ground pattern and said
second ground pattern,
the elevations of said first needle bed and of said second needle
bed relative to a predetermined point are the same at any
predetermined time during the knitting cycle, the said guides
laying the ground thread laying 2 or more even numbers of courses
about the needles in their respective needle beds for each complete
cycle of said third thread laying guide.
2. A process of manufacturing velour ware according to claim 1 on a
Raschel knitting machine comprising
a. a first needle bed of latch needles,
b. a second needle bed of latch needles located parallel to said
first needle bed,
c. two first guides for laying thread about needles in said first
needle bed,
d. two second guides for laying thread about needles in said second
needle bed,
e. one third guide for laying a weft thread about needles in said
first needle bed and about needles in said second needle bed said
third guide being swingable substantially in the same plane as said
first guides and said second guides and being located between said
first guides and said second guides,
said process comprising
i. laying two threads about needles in said first needle bed by
means of said two first guides to form a first ground pattern,
ii. laying two threads about needles in said second needle bed by
means of two second guides to form a second ground pattern,
iii. laying one weft thread about a needle in said first needle bed
and,
a needle in said second needle bed by means of said third guide to
provide a weft between said first ground pattern and said second
ground pattern,
the elevations of said first needle bed and of said second needle
bed relative to a predetermined point are the same at any
predetermined time during the knitting cycle, the said guides
laying the ground thread laying 2 or more even numbers of courses
about the needles in their respective needle beds for each complete
cycle of said third thread laying guide.
Description
DESCRIPTION OF THE PRIOR ART
Heretofore it has been known to utilize Raschel machines for the
formation of plush ware. Where particularly long plush threads are
required or where it is desired to produce plush type wares
resembling artificial furs which require particularly long weft
threads which in turn necessitate a large separation between the
needle beds, conventional equipment is not suitable. Such equipment
may be used if the running speed of the equipment is substantially
reduced in order to accommodate the extremely long swing path of
the weft thread guides. The swing speed of the weft guides can only
be raised up to a certain point. This point of speed is already
reached with the formation of conventional plushes. It would
therefore be desirable to provide an arrangement whereby a twin
needle bedded Raschel machine can be utilized to provide plushes
having long weft threads.
SUMMARY OF THE INVENTION
In the procedures of the present invention the laying movement of
the weft thread guide bars is set to cover a time period
corresponding to either two or more even number of courses or three
or more uneven number of courses. In the first alternative, that is
to say, correspondence with an even number of courses corresponding
to a complete cycle of the weft laying guides the two needle beds
are raised and lowered directly in phase thus they are both raised
or lowered at the same time. In the second alternative, that is to
say, where a complete cycle corresponds to an uneven number of
courses, then the needle beds are exactly out of phase, that is to
say, one needle bed is in the upper most position while the other
needle bed is in the lowest position. This novel arrangement
permits the machine to be run at a relatively conventional speed
without the necessity for extreme raising of the swing rate of the
weft guide even where extremely long weft threads are required, for
example, in the production of artificial furs or the like.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side elevational view of the machine utilized in the
present invention illustrating that portion thereof where the
stiches are formed.
FIG. 2 shows the lapping diagram for a machine of the type shown in
FIG. 1 wherein the weft guide performs a complete cycle for every
second course of the ground pattern.
FIG. 3 is the chain pattern table corresponding to FIG. 2.
FIG. 4 is the lapping diagram for a machine of FIG. 1 wherein a
complete cycle of the weft laying thread corresponds to every third
course of the ground pattern.
FIG. 5 is the chain pattern table corresponding to FIG. 4.
FIG. 6 is a side elevational view of another embodiment of the
machine illustrated in FIG. 1.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 illustrates the basic embodiment of the arrangement of the
present invention. As is customary in this art only those portions
of the equipment corresponding to one set of threads is
specifically referred to. It is understood by those skilled in the
art that the pattern may be repeated all the way down the needle
bed and the corresponding guide bars.
In the embodiment of FIG. 1 the needle beds containing needles 95
and 85 are set substantially parallel and substantially separated.
At least two guides 51 and 53 lay threads 52 and 54 about needle 85
to provide the ground pattern 50 thereupon. Similarly, guides 61
and 63 lay threads 62 and 64 about needle 95 to provide ground
pattern 60 thereupon. Guide 41 lays weft thread 42 between needles
85 and 95 to provide a weft pattern 40. Upon completion of the
material the weft threads comprising weft pattern 40 are cut in the
desired manner to provide the tufting of the velour or plush.
Though only two guides are shown laying the threads for the ground
pattern about each of the needles a larger number of such guides
may be employed if the pattern or nature of the ground material
calls therefore. The present invention is not limited to the
utilization of two guides about each needle and one weft guide
therebetween. FIG. 6 illustrates an embodiment utilizing guides 51,
53 and 55 to lay threads 52, 54 and 56 about needle 85, guides 61,
63 and 65 to lay threads 62, 64 and 66 about needle 95 and weft
guides 41 and 42 to lay threads 42 and 44 about both needles 95 and
85. A modification of the type illustrated in FIG. 6 is
particularly desirable when it is desired to provide a
multi-colored velour or fake fur appearance.
The number of guides and weft guides utilized may be increased
according to need. Similarly, the operating principles set forth
below and discussed with particular reference to the embodiment of
FIG. 1 are equally extendible to embodiments such as those in FIG.
6 utilizing a larger number of guides.
The basic improvement over the prior art provided by the
arrangement of the present invention is that it is no longer
necessary for the weft guide 41 (or 41 and 43 where, say, two weft
guides are utilized) to execute extremely rapid swings. It should
be understood that the guides, needle beds, and thread feeds are
activated by means well known in the art and that the timing
sequences discussed hereinbelow are also predetermined and
controlled by timing mechanisms such as chain link patterns which
are also well known in the art.
In the modification of the present invention which is illustrated
in FIG. 2 the sequence of the needle beds bearing needles 85 and 95
is so arranged that both needles are in the maximum upward or
maximum downward position at the same time. In this embodiment the
rate of travel of guide 41 is so regulated that it will lay one
complete cycle in the time taken for guides 61 and 63 to lay two
courses about needle 95. It being understood that the number of
courses laid about needle 85 during a given time span is the same
as the number of courses laid around needle 95 in the same time
span.
In another mode of operation as illustrated in FIGS. 4 and 5 the
needle bed bearing needle 95 is arranged to be exactly out of phase
with the bed bearing needle 95. Thus, the bed bearing needle 95 is
in its highest position when the bed bearing needle 85 is in its
lowest position, and vice versa. Under these circumstances guide
bar 41 will complete one full cycle for every three courses laid by
guides 61 and 63 about needle 95 and 51 and 53 about needle 85.
Where more than two guides are utilized about a given needle or
more than one weft guide is utilized between the needles as, for
example, in the embodiment of FIG. 6, it will be clear to one
skilled in the art how to produce chain link sequences and lapping
diagrams such as those set forth in FIGS. 2 through 5.
It should be understood that in the embodiment of which one species
is illustrated in FIGS. 2 and 3 a single complete cycle of weft
laying guide 41 is not limited to the time taken to lay two ground
courses about needle 95 or needle 98. The time for a complete cycle
of guide 41 may correspond to any even number of courses about
needle 85.
Similarly, the embodiment of FIGS. 4 and 5 are not limited to the
situation where the time for one complete cycle of guide 41 is
equal to three courses laid about needle 95 and needle 85. The time
for one complete cycle may correspond to the time required to lay
any odd number of courses about needle 95 and needle 85.
It should further be understood that while in theory guides
51,53,55, 41,43, 61,63 and 65 are in a common plane as shown in
FIGS. 1 and 2, in the course of operation of the equipment they may
be moved by the conventional guiding means in a plane perpendicular
to that shown in FIGS. 1 and 2 to provide the laying of thread
about the appropriate needles as, for example, shown in lapping
diagrams of FIGS. 2 and 4. The designations L1, L2, L3, L4, and L5
shown in FIGS. 2 thru 5 correspond to threads 62, 64, 42, 52 and 54
respectively as shown in FIGS. 1 and 6.
* * * * *