Year: 1885

page_text: '
I, FERNANDO ALSINA-PARELLADA, of Barcelona in the Kingdom of Spain,
Manufacturer, do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
This invention relates to a knife-holder, furnished with a circular bladed knife
and a cross-piece with a rail forming the knife-guide for looms, intended to weave
two pieces at the same time.
The well known use of a cutting plate or knife of a curved shape for the
purpose of dividing in two a web on the loom serving for its finishing, has
several inconveniences. I have succeeded in removing these inconveniences and
in obtaining a perfect regularity in cutting the web, thereby preventing the
friction of the web from continuing on one point of the plate, heating the same
and depriving it of its temper. These results are obtained as follows:
In the annexed drawings, Fig. VI is a vertical or side view of the knife holder
and of the circular knife from the side of the lever, represented as working,
Fig. VII is a horizontal or plan view of the apparatus.
Fig. V is a horizontal view of the contrivance for imparting motion to the knife.
Fig. VIII is a side view of the piece serving as guide for the motion of the
lever, when the latter arrives at the longitudinal extremity of the conducting
guide of the knife or plate.
Figs. I II III IV show details, namely
Fig. I horizontal view and side view of the piece A.
Fig. II the horizontal view and side view of the piece B.
Fig. III the horizontal view and side view of the piece D.
Fig. IV the circular knife or plate, the toothed wheel, secured to the latter, and
the beam connecting the same.
A cross piece A supporting the knife by means of a circular plate p², carries
perpendicularly a piece B, fixed in a groove a b (Fig. II) by means of a bolt.c.
Between the two nuts e and f of this bolt is fixed the piece D, serving to secure
the knife constantly in the same plane.

page_text: The small axle-bearers carry the horizontal beam m, the middle of which
forms an endless screw p, and one extremity of which is provided with a pinion
or ratchet wheel and a lever r. The teeth of the pinion n are caught by the
extremity of the arms, intended to impart a circular motion to the pinion or
ratchet-wheel n by moving up and down.
The three pieces A B. C, having thus been connected, are put on a support F F
(situated parallelly under the piece B, but without touching the same) with which
they are connected by the extremities hi of the piece B, which are adapted
to turn freely in the supports E E, united with the supports, bolted on the
supports F F.
The knife proper is made of a tempered circular steel plate I (horizontal and
side view Fig. IV) mounted on a helicoidal wheel J J, to which it is secured by an
axle or bolt K, furnished at the upper end with a screw and nut. These parts in
connection, I call all together knife, are mounted on a knife-holder, represented by
Figs. VI and VII.
As shown by Fig. VI the lower cylindrical part or pivot of the axle or bolt K
connecting the circular plate I with the helicoidal wheel J, is lodged in a
cylindrical hole of the circular plateau p¹ of the piece A, whilst the helicoidal
wheel J gears with its teeth O into the endless screw p of the beam m, Fig. V.
To prevent the knife from being altered in its position by the motion of the
beam m or by the rapid and alternate transfer of the whole apparatus from one
side of the loom to the other, I use a piece D, secured at one end by a screw and
nut and placed with the other end on the upper part of the axle or bolt K and
prevent the latter from being lifted, without impairing its rotation.
As guide for the knife-holder I employ a metallic rule M M extending in front
of the loom and represented in vertical section by Fig. VI.
In the groove t u v is guided the support F F and into the groove x y z reaches
the extremity p" of the piece A, which extremity is provided with two springs m¹
and m and a regulating screw L, by means of which the said springs can be
lifted and lowered for varying at pleasure the height of the edge of the knife.
The respective position of the rule of the knife-holder and of the plate is shewn
by Fig. VI, in which 1 and 2 represent the web or double woven piece. Between 2
and 3 is situated the cutting line or point. 3, 4 and 5 shew the direction of the
lower part of the web after being cut, which is attracted by the cylinder R',
whilst 2, 6 and 7 is the direction of the upper piece of web after being cut, which
is attracted by the cylinder R.
The up and down motion of the lever Fig. VI for the purpose of turning the
knife, is cffected as follows: To one of the extremities of the cross bar or rule M M
is fixed an angular support bb Fig. VIII, at which is bolted a plank, cut in as
shewn by a all all When the knife-holder arrives at this extremity of the
conducting rule, the curved extremity of the lever r enters into the recess a¹ all all
of the abovementioned plank and is forced to follow the curve formed by this
recess by lifting itself, when entering into this curve and lowering itself when
getting out of the same. Each time that this movement takes place, the arm or
click 8, connected with the lever r causes one tooth of the ratchet-wheel n to
advance and thus turns the endless screw p of the horizontal beam m Fig. V; the
endless screw gearing into O with the helicoidal toothed wheel J causes the
latter to turn with the plate I, with which it is connected by the axle K
The result is, that each time, that the knife-holder arrives at the extremity of the
rail or conducting rule, where is situated the plank with recess a¹ all all
Fig. VIII, the position of that part of the circumference of the plate, which touches
the web varies, and each time a new point of the edge of the plate is placed into
the intended position for cutting the web.
Thus is obtained perfect, uniformity in cutting the web, preventing at the same
time the continuous friction of the same point of the edge of the plate on the web,
from heating the steel of the plate and thus depriving it of its temper.

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
As an attachment to looms the apparatus consisting of the knife holder,
furnished with a circular bladed knife, the cross-piece, the rail forming the knife
guide combined with their various accessories, all substantially as described and
illustrated and for the purposes set forth.