CPC Definition - Subclass D03C
This place covers:
all mechanisms and methods involved in the formation of a weaving shed.
In this place, the following terms or expressions are used with the meaning indicated:
The term "shedding" relates to an operation in which warp yarns are being moved apart so that the weft yarn can be inserted (i.e. part of the warp yarns are brought in an upper position and others are brought in a lower position).
This place covers:
shedding mechanisms with a selectable position of the heald frame.
Attention is drawn to the following places, which may be of interest for search:
Shedding mechanisms wherein the position of the heald frame is not selectable |
This place covers:
dobbies with an electronic selection mechanism.
This place covers:
dobbies in which the same draw-knife or equivalent operates for every pick. Normally these comprise a mechanically operated selection mechanisms.
This place covers:
dobbies in which separate draw-knives or equivalent operate on alternative picks. Normally these comprise a mechanically operated selection mechanism.
This place covers:
dobbies whereby the shedding movement always starts from the middle position (i.e. the position where the warp yarns are flat). Normally these comprise a mechanically operated selection mechanism.
This place does not cover:
Stop motions acting on a defective operation of shedding mechanisms |
This place covers:
mechanisms to bring all warps to the same level.
This place covers:
connections between a dobby and heald frame.
This place covers:
shedding mechanisms driven by a separate motor, independent from the main motor.
This place does not cover:
Shedding mechanisms whereby each heald frame is driven by a separate drive motor |
This place covers:
dobbies comprising eccentrics to drive the shafts.
This place covers:
mechanisms with needles to read information from the pattern cards or chains.
This place covers:
mechanisms in which cylinders or pattern cards or chains driven by cylinders cooperate with the selection hooks of the dobby.
This place covers:
shedding mechanisms with healds or other yarn engaging devices, which can be individually selected according to a predetermined weaving pattern.
This place covers:
selection mechanisms comprising a single selectable hook for each heald.
This place covers:
selection mechanisms comprising two selectable hooks for each heald.
This place covers:
jacquards wherein the shedding movement always starts from the middle position (i.e. where the warp yarns are flat).
This place covers:
jacquards wherein each lifting cord or each group of lifting cords being driven by a separate actuator.
This place covers:
pneumatic or hydraulic jacquard mechanisms.
This place covers:
mechanisms in which cylinders or pattern cards or chains driven by cylinders selectively engage with jacquard hooks.
This place covers:
knife mechanisms, i.e. mechanisms comprising knives oscillating in opposite directions and which are selectively engagable with the jacquard hooks.
Attention is drawn to the following places, which may be of interest for search:
Attachments or mountings of wound springs | |
Damping by frictional contact between the spring and braking means |
In this place, the following terms or expressions are used with the meaning indicated:
In this group, the term "lingoes" indicates means to tension the lifting cords, normally by elastic force or by their own weight.
This place covers:
mechanisms whereby the movement of the shedding frame is not programmable. There is no selection of the frame, the frame movement is always the same. A typical example is a shedding mechanism where the shaft movement is determined by a cam and the fixed movement determined by said cam is followed for each weft insertion.
This place covers:
cam mechanisms or other direct-acting shedding mechanism to bring all warps to the same level.
This place covers:
mechanisms and methods to make warp yarns cross between the weft insertions.
Attention is drawn to the following places, which may be of interest for search:
Leno-woven fabrics |
This place covers:
shedding motions with both a leno shedding motion and a second "main" shedding motion (e.g. jacquard or dobby) for the warp threads.
Attention is drawn to the following places, which may be of interest for search:
Fabric patterns with a leno binding yarn additional to the weft and warp yarns |
This place covers:
in particular mechanisms with a doup and heddle.
This place covers:
mechanisms having discs oscillating about a weftwise axis and having apertures for warp threads. These discs oscillate between each or a limited number of picks to avoid twist.
Attention is drawn to the following places, which may be of interest for search:
Devices for twisting warp threads repeatedly in the same direction |
This place covers:
in particular mechanisms with a comb-like structure.
This place covers:
devices for twisting warp threads repeatedly in the same direction. These normally have a bobbin on the disc.
Attention is drawn to the following places, which may be of interest for search:
Mechanisms which change direction between each or a limited number of picks |
This place covers:
healds and frames for holding the healds.
In this place, the following terms or expressions are used with the meaning indicated:
Healds are small strips of material, wire or cord with an eyelet through which a warp yarn is threaded. The healds are moved whereby the warp yarns follow this movement. A shed is formed by moving the warp yarns to different positions.
In this group, as well as in the patent documents classified in this group, the term heald is a synonym for heddle.
Attention is drawn to the following places, which may be of interest for search:
Wire-working in the manufacture of loom heddles |
This place covers:
heddles with a stiffening element in its construction, e.g. longitudinal bend.
Attention is drawn to the following places, which may be of interest for search:
Couplings of the quick-acting type (i.e. couplings suitable for the harness cord) |
Attention is drawn to the following places, which may be of interest for search:
Selvedges not made by a shedding mechanism (e.g. by tucking back in the weft yarns) |
This place covers:
shedding mechanisms not otherwise provided for.
This place covers:
shedding mechanisms other than dobbies and jacquards, which are driven by a separate motor, independent from the main motor.
This place covers:
shedding mechanisms wherein each frame is driven by one or more separate independent motors.
This place covers:
jacquard or dobby cards or jacquard chains which store pattern information.
This place does not cover:
Storing pattern information in electronic form |
This place covers:
apparatuses for punching jacquard or dobby cards or jacquard chains for storing the pattern information.
In this place, the following terms or expressions are used with the meaning indicated:
Jacquard or dobby cards are punched cards containing pattern information and are used for controlling a jacquard meachanism or dobby. Jacquard chains are series of jacquard cards.
This place covers:
miscellaneous methods or devices concerned with designing or making patterns, in particular those methods or devices not covered by D03C 15/00 and D03C 17/00.
This place covers:
Storage of pattern information in electronic form.