Year: 1895

page_text: Date of Application, 4th June, 1895-Accepted, 4th June, '1896
A communication to me from ERNST GOTTHILF BOHLE, of 'Werdau, in 'the
Empire of Germany, Manufacturer.
I, EDMUND EDWARDS, of the Firm of Edwards and. Co., Patent Agents, and
Engineers, of 65 and 66, Chancery Lane, in the County of Middlesex, 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, and accompanying drawing, that is to say
+
The improvements which form the subject of this invention relate to the
apparatus used in carding engines, in which the fibrous web coming from the card
cylinder is divided into pieces, these pieces being placed upon one another by
a transferring device, and so brought to another carding machine.
It is well known to be of importance for the quality of the yarns to be made,
that the fibrous material should be delivered through the cards as uniformly as
possible, and that especially in the making of a compound fleece, the division of
the web into unequal pieces, the uneven laying of the pieces upon one another,
and the like, which are antagonistic to the principle of good work, shotild be
avoided.
The present invention relates to a process for making bands' or¹fleeces, and to
the apparatus to be used in carrying out such process, (as illustrated in the
accompanying drawing), which removes these objections, such as the irregularity
of the band, fleece, or web.
-The improved process has the further advantages, that-
(1): The web leaving the first carding engine is absolutely and with certainty
divided into pieces of equal length, and the division is effected with great economy
of the fibrous material.
(2) The divided pieces of the web are also laid, perfectly smoothly and without
creasing, upon the previously laid pieces, and,
I
(3) The web coming from the card, and hanging freely, is laid; not with any
uncertainty, but always exactly in the proper position, upon the surface of the
conveying apparatus by which it is removed as already described.
For effecting the objects pointed out in (1) and (2) the apparatus illustrated in
Figures 1 to 3 is used, whilst the apparatus shewn in Figures 4'to 7 serves for the
fulfilment of all three objects.
.
In the carding engine which is shewn in front view in Figure 1, partly in
section in Figure 2, and in side view in Figure 3, the web removed from the
doffing cylinder 1 of the carding engine by the doffing comb 2, is brought by
means of the endless travelling band or table 3, which passes round the cylinders 4
and 5, between the hanging strips or boards 41 and 42, for which if desired,
cylinders or endless bands may be substituted, and is deposited upon the conveying
apparatus 7.
The two boards 41 and 42 are connected together by means of a bar pivotted
to them.
'the
To the board. 42 is jointed a connecting rod, driven by a crankpin upon
pulley 40, itself driven by the card cylinder 1, so that an oscillating pendulum
movement is communicated to both boards, whilst between the oscillating boards
and the conveying apparatus 7, a roller 30 is made to travel and roll backwards
and forwards.

page_text: The axle 8 of the roller 30 is given this backward and forward movement by
means of the connecting rod 10, the other end of which is carried upon, and
adjustable in a crank arm 11. This backward and forward movement of the roller
takes place above an endless travelling table 7, at right angles to the one
already described, and forming the conveying apparatus for carrying away the
material.
The
The movement of the endless table 7 is so proportioned that a compound band
of the material is formed, which is then carried away between the two inclined
endless travelling bands or surfaces shewn at the left side of Figure 1.
working of the crank arm 11 is effected by the card cylinder, with the inter-
vention of suitable toothed gear 31, 33 and 34, (Figure 2).
The material deposited upon the endless table 7 is laid evenly upon the latter
by the backward and forward rolling cylinder 30, at each end of the axle 8
of which, toothed wheels 43 and 43 are fixed, which gear and work in corre-
sponding toothed racks fixed to the frames, so as to give an always parallel motion
to the roller. Before the roller 30 reaches the ends of its stroke, the oscillating
boards 41 and 42 move out in the opposite direction. As the speed of delivery of
the travelling table 3 remains always the same, whilst the roller 30, towards the
end of its travel, in itself stretches the web, and as also the oscillating movement
of the suspended boards increases this stretching even to tearing, it follows that
these different actions upon the web, in the space between the boards 41 and 42
and the roller 30, must first effect a stretching and finally a tearing asunder of
the web.
The gradually increasing stretching effects the tearing of the web without any
injury to the fibres, as they are free to move on one another.
Whilst the torn-off strip is laid entirely upon the endless travelling table 7, the
hanging down end of the web continues to be delivered, and at the, backward.
or return movement of the roller is caught and laid down to form a fresh
strip.
In order to prevent the taking back of the piece of the web by the roller,―
which might easily happen with long-fibred, greasy, material,-there are arranged
at both sides of the conveying apparatus 7, banging or turning blades or plates 36:
and 37, which by the revolution of the roller clear off from the latter and return to
the conveying apparatus 7, any pieces of the web adhering to it. These plates 36
and 37 are coupled together by a connecting rod, and are made to oscillate as
described by a connecting rod 38 driven by a crankpin upon the wheel 39.
Moreover, a fixed stripping roller, 27 and 28, is arranged between each oscillating:
board and hanging biade or plate, these rollers being provided with teeth at the
lower part of their circumference, and so arranged that from the backward and
forward moving roller 30 the removal of any fragments of material is effected.
Both these stripping rollers may be replaced by brushes.
Figure 3 shews the exact position of the roller 30 and the board 42, in which
the movement of the roller against the corresponding opposite movement of the
suspended board commences, in order that a strip of the web may be torn off.
In Figure 2 the roller 30 has laid the torn off strip on the travelling table 7,
and is by the pressure of the turning blade or plate 37, and of the stripping roller
or brush 28, freed from any adhering pieces of stuff, in order that it may be clean:
to effect the next separation of the web.
The blades or plates 36 and 37 and the stripping rollers or brushes 27 and 28,
aid in effecting the two objects already herein before pointed out, in the formation
of a true and uniform band, or fleece, by preventing the hanging back of part of
the web and the possible partial winding up and displacing of one or more of the..
layers of the web already deposited, and their redepositing in wrong positions,
whereby a band of unequal thickness would be formed.
In order to attain the third object of the invention, that is to say the laying of
the web hanging from the endless travelling table 3 exactly in relatively the same
correct position upon the conveying apparatus 7, the end of the web hanging down

page_text: behind the dividing or severing roller 30, is caught and pressed down upon the
fleece already formed, to which it adheres firmly.
In
In Figures 4 to 7 of the accompanying drawing an arrangement is shewn, which
will effect the three said objects of the invention, instead of the first two only.
order to avoid too many details, by which the clearness of the drawing would be
affected, the blades or plates 36 and 37 and their actuating mechanism, are not
shewn, since any person skilled in the art to which the invention relates, will easily
supply what is necessary to the description which follows.
Figure 4 shews a front view, Figure 5 a side view, partly in section, of the
apparatus. Figures 6 and 7 shew parts of the device for holding the web, on
a larger scale.
The arrangement consists substantially in arranging above the roller 30, the
grippers 19 and 20, which are of the full width of the web, and which press the
web near the point at which it is to be separated, against the endless moving table 7,
(behind the advancing roller 30), by which action the separation of the web is
effected.
In the carding engine shewn in Figures 4 and 5, the web removed from the card
cylinder by the doffing comb 2 is conducted by the endless table or band 3 to the
lower one 7. Above the two sides of the latter, shafts or axles 13 and 14 are
arranged, upon which the grippers 19 and 20 are fixed. These latter consist of
semi-circular arms 15 or 16, firmly fixed upon the shafts 13 and 14, the free ends of
the arms being connected together by a rod 17, 18, upon which the grippers them-
selves, consisting of bent plates 19 and 20, are fixed by screws;-the edge of the
plates, directed outward, and rounded smoothly, or provided with teeth in the
direction of the movement of the endless table 7, engaging with and holding
the web.
On the axle 13 (or 14) is fitted also an arm 23 (or 24) bent to a determined
curve, which is pressed down by the disc or roller 43 carried by the axle 8 of the
oscillating roller 30, so that the gripper 19 (or 20) carried upon the same axis 13
(or 14) as the arm, after the passing of the outwardly moving roller 30, is pressed
down, behind it, against the endless table 7.
At the return of the roller 30, the gripper 19 (or 20) and the lever 23 (or 24)
are raised by the action of the counterweight 21 (or 22) until the weighted lever,
or a separate lever parallel to it, rests upon the stop 25 (or 26).
The working of this apparatus is as follows:-The disc 12, driven by the card
cylinder, itself drives, in its revolution, by means of the connecting rod 11, the
lever 10 pivotted at 29, and the connecting bar 9 which drives the oscillating
roller 30, to which it communicates a backward and forward movement. As soon
as the roller 30 which (as already explained) presses down the web on the endless
moveable table 7, arrives under the raised gripper 20 (as shewn at the right hand
of Figure 5) the roller 43, which is already upon the arm 24, depresses the latter
together with the gripper 20. The outwardly moving roller 30 and the downwardly
moving gripper 20, cause the web to be stretched and finally separated, its fibres
moving freely on one another. Whilst now the roller 30, in its return stroke,
presses down one severed end of the web, the other end of the web is laid down
upon the moving table 7 by the gripper 19 (see the left hand of Figure 5) where
it is held firmly, when the gripper rises, by its adhesion to the layers of already
deposited web which form the fleece, so that any shifting about of the hanging end
is prevented, and it is always laid in exactly the same position upon the conveying
table 7.
At the return stroke of the cylinder 30, it is freed by means of pivotted plates,
and brush cylinders,-as in the apparatus illustrated in Figures 1 to 3 already
described, from any adhering web, and then passes under the raised gripper to
the other side of the table 7, pressing down as already described the web deposited
upon the table 7 by the gripper 20, and with the assistance of the gripper 19
again severing the web.
As the gripper only for a moment presses down the end of the hanging strip

page_text: upon the band, and is then raised, no special arrangement is necessary in regard
to the movement of the endless table under it, especially as such movement is
; very slow.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
―:
. 1. The process, for the formation of a true. fleece. or band, of the web delivered
from the card cylinder 1, upon the delivering table 3, in which process the web,
conducted to a roller 30 travelling backward and forward above an endless travelling
table 7, and by the aid of suspended boards, 41, 42, oscillating in opposite directions,
or rollers, or endless bands, or grippers, 19, 20, brought down upon the endless
table 7 behind the oscillating roller 30, is separated into pieces of uniform length
without injury. to the fibres, these pieces being transferred to the conveying
apparatus and laid uniformly upon each other, the roller 30 being freed from loose
pieces by plates 36, 37, and brush cylinders 27, 28, in combination or separately,
so that by the grippers 19, 20, the end of the web hanging down from the endless
delivering table 3, is also deposited in the proper position upon the endless
conveying table 7.
2. The apparatus, for converting the fibrous web coming from the carding
engine, to a band or fleece, consisting of the endless delivering table 3, the
suspended oscillating boards 41, 42, cylinders or endless bands, which are arranged
above a backward and forward moving roller 30, and operating in such manner
that the web is first stretched between the roller and the suspended boards, and is
then separated by pulling asunder the fibres upon one another, the backward and
forward moving roller 30, already described, being provided at the ends of its
axle 8 with toothed wheels 43 gearing with toothed racks, and finally the endless
travelling table 7 upon which the pieces of web are deposited and carried away,
substantially as described and illustrated.
3. The apparatus, for converting the fibrous web coming from the carding engine
to a band or fleece, consisting of the endless delivery table the grippers 19, 20,
pressed down upon the endless travelling table 7 by the backward and forward
movement of the roller 30, and the roller 43, and raised by the counterbalance
weights 21, 22, and the conveying apparatus 7, substantially as described and
illustrated in Figures 4, 5, 6, and 7.
4. The gripper, consisting of a shaft 13, or 14, on which are fixed the curved
arms 15 or 16, the free ends of which are connected by a bar carrying a curved
plate 19 or 20, also a suitably curved arm 23, or 24, and lastly a lever 21, or 22,
carrying a balance weight 21, or 22, substantially as described, and illustrated in
Figures 4, 5, 6, and 7.
5. In apparatus of the kind described in Claims 2 or 3, the oscillating or
revolving plates 36, 37, or stripping cylinders 27, 28, or both, for the purpose of
cleaning the backward and forward moving cylinder 30, substantially as described
and illustrated.
Dated shin 14
M
1002
EDWARDS & Co.,
65 and 66, Chancery Lane, London, Agents for the Applicant.