IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1868

page_text: PROVISIONAL SPECIFICATION left by Henri Louis Auguste Lippens
at the Office of the Commissioners of Patents, with his Petition, on
the 25th May 1868...
I, HENRI LOUIS AUGUSTE LIPPENS, of Lille, in the Empire of France,-
now of No. 8, Southampton Buildings, Chancery Lane, in the County
of Middlesex, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN LOOMS FOR WEAVING," to be as follows:-
Power loom weaving has hitherto been imperfect in so far that the
production of a regular and continuous web has not been practicable,.
because the roller on which the warp is wound as hitherto arranged
does not deliver the exact quantity of thread necessary to make the web.
with the same number of threads in the warp as in the weft, which is.
the perfection of weaving..
By the use of my improved apparatus the above-mentioned difficulty.
is obviated. The warp roller has heretofore been held by a series of.
pulleys, a cord passing around such pulleys being, attached to a weighted
lever. In my improved system these pulleys and also the lever and.
weights are dispensed with, so that the thread no longer being submitted.
to such severe tension is not so easily broken. I thus effect. a saving

page_text: wheel
of at least fifteen per cent. in the workmen's time, while the roller
having no strain on it gives out a certain length of warp the instant the
harness is raised for the passage of the shuttle. The warp regains its
It follows therefore that the
tension immediately after the beating up.
tension being always equal an even or regular web is produced. The
driving shaft carries an eccentric which is provided with a connecting
rod composed of two parts; the rod or shank of one of these parts carries.
a socket which receives a rod on the other part. The socket fits these
rods at both ends, but a space is left in the middle of the socket to
receive a spiral spring surrounding the rod or shank; the latter carries
a washer secured by a pin, whereon the pressure is exerted when the
spring is compressed by the motion of the eccentric, the said spring
bearing against a cap also secured by a pin, so that there is no rigid
tension when the movement of the batten takes place. A spur
is fixed on the end of the warp roller, and carries a collar covered by a
washer. This collar is extended and carries a pinion which is connected
with a worm wheel gearing with an endless screw; the latter is also
geared with a smaller wheel on the other side to keep it in gear with the
said worm wheel. The screw is connected with a piece which is formed
with teeth at one end, and which carries a pawl working in a ratchet
at the other end. Each revolution of the driving shaft by means of the
eccentric and connecting rod produces an oscillation of the collar which
carries the pinion, and the whole apparatus is thereby set in motion. A
rack which gears with the piece carrying the pawl is formed or fitted
with a head so arranged that by the oscillation of the collar it is brought
into contact with a stop, thus moving the ratchet which controls the
endless screw. A lever supported by a standard is arranged under the
warp roller and carries at each end a rod; one of these rods is provided
with a piece which rests with a slight pressure on the warp; the other
rod is connected by a bolt to a spindle carrying a diagonal rod. As the
quantity of the warp diminishes the lever is lowered, and by means of
the bolt moves the spindle, the top of which forms a guide for a segment
on the diagonal rod; the latter is arranged in connection with the stop, and
being drawn down by the spindle throws the said stop outward or nearer
to the head of the rack. The distance between the said stop and head
being thus diminished a greater motion is imparted to the piece carrying
the rack, which by means of the pawl unwinds at cach stroke the quantity
of thread required to produce a regular web. A spiral spring on the
spindle of the stop between the bearing of the spindle and a collar on

page_text: the same keeps the said stop properly against the diagonal rod. The
segment connected with this rod can be adjusted to regulate the
inclination of the same, and the web can thus be made more or less
close at pleasure. The number of threads to the weft is indicated upon
a suitable scale.