DEVOGE'S CROSS BORDER JACQUARD
Devoge’s cross border jacquard
This machine is a double acting, double cylinder jacquard but for cross borders is worked as a single cylinder machine with either cylinder at will. Fig: I is a diagonal representation of the mechanical details employed for locking and detaching either cards cylinder by hand to suit the requisite length or number of repeats of pattern for either sets of cards.’
A is the reciprocating rod operated from an eccentric on the crank shaft of the loom; B is a stud connecting the rod A with a lever C s crewed to the shaft D which extends across the length of the machine and near its base. B is a lever set sewed at right angles behind C to the same shaft D. An adjustable stud F combines the lever E with the link G which in turn is adjusted through the stud H to the lever I pivoted at J.K and Kꞌ are two studs set equidistant from the common fulcrum J.L is a connecting arm pivoted at K. Near the free end the arm L a special socket M is
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Formed, which is free to lock as required with a suitable formed stud N, securely fixed near the base of the swing batten lever O, pivoted to a fixed bracket projecting from the top of the jacquard framework at P. The position of the card cylinder is shown at Q. The extremity of the arm L is linked by the connection R to a small lever S, set screwed to the shaft T which extends and is fastened to the swing batten O and its duplicates for the same cards cylinder. Immediately behind the lever S and set screwed diametrically opposite to it, is second lever U to which a cord V is attached. This hangs down to within the control of the weaver. Corresponding details, from K to V inclusive, are indicated from Kꞌ to Vꞌ for controlling the card cylinder on the opposite side of the jacquard machine. Portions of the needles and needle board for the right hand cylinder are given at W, and for the left hand at Wꞌ.
Action of the mechanism
In the illustration ,the socket Mꞌ of arm Lꞌ is in working contact with the stud Nꞌ in the swing batten lever Oꞌ , so that card cylinder Qꞌ will strike against the needles Wꞌ on every short whilst this arrangement last. But immediately weaver stops the loom, pulls down and makes fast the cord Vꞌ he elevates through the medium of parts Uꞌ, Sꞌ and Rꞌ the free arm of Lꞌ and detaches the socket Mꞌ from its connections Nꞌ and swing lever Oꞌ. Simultaneously the cord V is released and the arm L falls, by gravity ,on to the stud N ,so that by turning the loom slowly ‘over; the notch M falls over the stud N and locks itself , by which means the cylinder Q is in working operation for as long as required.
