AN IMPROVED DOUBLE- WARP KNITTING MACHINE
Year: 1885

page_text: I LORENTZ ALBERT GROTH K.G.V. Civil Engineer and Proprietor of the Patent
Industrial and Financial Agency 30 Finsbury Pavement London E.C. do hereby
declare the nature of said invention for "AN IMPROVED DOUBLE- WARP KNITTING
MACHINE" a communication to me from abroad by Carl F Eberhardt Gentleman of
Naumberg, in the Kingdom of Saxony German Empire to be as follows:-
The object of this invention is
1st To obtain the double capacity of a chain stool with tongue needles.
2nd To make double crotcheted material called "Fangwaare."
3rd To make right and right material.
The first part of the invention is attained in the following manner.
Two rows of knitting machine needles are placed in a nearly perpendicular
position against each other and moved by two excentrics while two other rows of
eyed needles each carrying a thread place this thread in the hooks of lower needles.
To prevent strings being made instead of a compact material the upper eyed needle
combs are moved one or two needles to the left and then back at the completion of
the row.
To make double crotcheted material the tongue needles receive the thread
twice before dropping the stitch whereby each stitch is caught by a needle in
each row.
For this purpose however the needle rows must be in a position so that the
needles of one row, will cross between the needles of the other.
In this case one of the needle rows is moved by the eccentric.
When in the crossed position the upper eyed needles place the thread in the
hooks when the needle rows are moved backward one row droping its stitches, they
are then crossed again the threads placed on the hooks and moved back the other
row then droping its stitches.
In this way each needle receives the thread twice before dropping its stitch.
In order to make right and right material the threads are laid in when the
needles cross and each row moving back drops its stitches.
For making special designs each machine needle as in Lamb's machine must
rest on a slotted plate in recesses in the needle bed and are moved separately the
needles not in use being left behind in openings in the slotted guide plate.
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471 3
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page_text: performed to be particularly described and ascertained in and by the following
statement:
The object of this invention is
1st To obtain the double capacity of a chain stool with tongue needles.
2nd To make double worked material called "Fangwaare."
3rd To make "ribbed" material.
The first part of the invention is attained in the following manner.
Two rows. of knitting machine needles n¹ and n are placed in a nearly
perpendicular position against each other and moved by two excentrics k' and
Fig. 1, while two rows of eyed needles each carrying a thread place this thread
in the hooks of the lower needles n¹ n². To prevent strings being made instead of
a compact material the upper eyed needle combs are moved one or two needles
to the left and then back at the completion of the row.
To make double worked material the tongue needles receive the thread twice
before dropping the stitch whereby each stitch is caught by a needle in the
opposite row.
For this purpose however the needle rows n' n³ Fig. 2. must be in a position so
that the needles of one row will cross between the needles of the other.
In this case one of the needle rows.is moved by the lever h actuated by the
excentric Fig. 6.
When in the crossed position Fig. 2 the upper eyed needles place the thread
in the hooks of each needle of the lower rows n² n² when they are moved
backwards the row n¹ dropping its stitches while the row n³ retains its stitches
by being held in a high position, they are then crossed again the threads placed on
the hooks and again moved back the other row n dropping its stitches. In this
way each needle receives the thread twice before dropping its stitch thus forming
a double material.
In order to make " ribbed " material the threads are laid as beforementioned when
the needles cross Fig. 5 and cach row moving back drops its stitches simultaneously.
For making special designs each machine needle as in Lamb's 'machine must
rest on a slotted plate e Fig. 2 in recesses in the needle bed and are moved
separately the needles not in use being left behind in openings in the slotted guide
plate Fig. 5.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1st The arrangement by means of which a double capacity is got consisting of
the upper needle rows of the respective needle rows leading and placing the
threads in the hooks of the needles n n as hereinbefore described and illustrated
in the drawings.
2nd The arrangement for producing double worked as well as ribbed material as
herein before described and illustrated in the drawings.