摘要:
A dobby for a weaving loom, of the type in which each dobby element associated with a heddle frame or group of heddle frames comprises an actuating lever actuated by a reciprocating movement, a double swinging lever pivoted thereon and of which the ends are provided with fastening hooks, this double swinging lever being actuated by two cross-pieces carried by oscillating supports and common to all the elements of the dobby, and two retaining hooks adapted to selectively cooperate with the fastening hooks, each of these retaining hooks comprising on the one hand a first or main portion pivoted on the frame and which bears the hooking nose, on the other hand, a second selection portion pivoted on the first, connected thereto by a spring and stop system, and receiving the action of the weave mechanism, the whole being such that this mechanism may achieve the selection of the double swinging lever in question by displacing the second portion of one of the retaining hooks before the corresponding fastening hook has arrived at the end of backward stroke, this retaining hook being latched in the manner of a pawl on passage of said fastening hook to hook therebehind, while with each of the two rows of retaining hooks of the dobby there is associated a locking bar actuated by a reciprocating movement and which cooperates with the first portion of each hook of the row in question to lock this portion either in a retracted position for which the retaining hook in question cannot retain the corresponding fastening hook, or on the contrary in the engaged position for which this first portion hooks to said fastening hook, which bars alternately release the first portions of the retaining hooks during the selection, one for even strokes, the other for odd strokes, wherein in each element the second or selection portions of the two retaining hooks are actuated during selection by a single member associated with the pattern mechanism.
摘要:
An assembly for controlling the reciprocating movement of the upper and lower frames of a shed-forming device of a weaving loom wherein on the chassis on either side of the shed-forming device two cams are provided which are each in engagement with the end of an offset lever fitted on a shaft to which is connected a balance beam. The ends of the balance beam are connected to the first ends of two connecting rods which have their other ends articulated to first and second rocking levers. The first rocking lever is split having oppositely oriented spaced arms which are separated by the second rocking lever. The first rocking lever is fitted on a pin pivoting in a bearing on the chassis. The second rocking lever is mounted to rotate about the pin of the first rocking lever and the first and second rocking levers are connected to the upper and lower frames by short and long articulated levers.
摘要:
A three-position weaving mechanism for a weaving loom which includes a plurality of shed-forming devices having tackle assemblies disposed in side by side relationship and wherein the lower pulleys of adjacent tackle assemblies are joined by a cord which passes over such pulleys and an intermediate idler pulley which is secured to the frame of the weaving loom.
摘要:
This invention relates to a double coupling for removably joining twin pipes, wherein the two connectors of the male piece engage in parallel bores in the female piece, and one of them cooperates with a bolt mechanism which ensures removable assembly of the two pieces. In a variant, the bolt is disposed between the two bores in order to cooperate with the two connectors.
摘要:
Levers with double roller assemblies for positive cam mechanisms for controlling the heddle frames of weaving looms wherein each roller assembly comprises a rotating ring supported on a plurality of roller bearings retained relative thereto on a fixed support mounted to or on extension of the levers. The rings and supports are thus capable of penetrating between the cams of the weaving loom without modifying the axial dimensions of an assembly of such cams.
摘要:
This invention relates to the shed forming devices in weaving looms wherein each of the retaining hooks is in the form of an element which is pivotable about a horizontal pin with each element provided with a tail portion which is subjected to the reaction of a compression spring so that the head portion thereof lies in a rest position above the toe of a corresponding mobile hook. When the mobile hook causes a retaining hook to pivot so that its nose or head is in an outer position with respect to the toe, an electromagnet of the device may be selectively activated to retain the retaining hook in this outer position to thereby prevent the mobile hook from being restrained by the retaining hook.
摘要:
A non-return device for welding installations, of the kind comprising a movable valve arranged so as to free the passage of gas for the normal supply of the torch from a welding gas generator and, by contrast, to block said passage in the case of a back-pressure resulting from an explosion in the region of the torch burner, the said valve including for this purpose closure means co-operating with a seat under the effect of resilient return means, the valve including second closure means operating inversely to the first in such a manner that the displacement of said valve, under the effect of a sudden fall in pressure downstream of the device and against return means conveniently calibrated to this effect, ensures the automatic cut-off of the flow of gas through the assembly.
摘要:
A process for assembling and an epicyclic reduction gear comprising a plurality of planets provided with outer toothings moveable rotatable about a shaft which are engaged with the toothings of, at least one adjacent gear ring. The shaft of the planets is mounted on a planet-holder so that it is adapted to move with respect to said planet-holder both radially and angularly in a plane perpendicular to the principal shaft of the reduction gear. The rotation shaft of each planet may be radially and angularly adjusted to a position where its outer toothing meshes with the toothing of the adjacent gear ring and may thereafter be secured in position.
摘要:
In a jacquard system for forming the shed in a weaving machine, vertical reciprocating blades of griffe frames are controlled by concentric shafts driven by a single cam assembly connected to the input shaft driven by the drive shaft of the weaving machine. Each of the concentric shafts include radially extending levers which are connected to control the reciprocating movement of the blades.
摘要:
A frame for supporting the return levers connected to the heddle frames of a weaving system of a loom wherein the frame is in the form of an upwardly open U-shaped beam connected to a box element mounted to a support structure of the loom.