Improvements in Carding Engines.
Year: 1896

page_text: Date of Application, 9th May, 1896-Accepted, 27th June, 1895
COMPLETE SPECIFICATION.
Improvements in Carding Engines.
I, JAMES YATE JOHNSON of 47 Lincoln's Inn Fields in the County of
London, Gentleman do hereby declare the nature of this invention (which has
been communicated to me from abroad by the Firm styled "Maschinen-fabrik
Oscar Schimmel & Co." of Aue 26 Chemnitz Saxony in the German Empire) 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 carding engines and consists in arranging two or more
doffers in such machines, the fibrous material being removed from the several doffers
in strips through dividing apparatus and the strips of fibrous material which take
up their position one over the other, as each leaves its particular doffer-being drawn
together so as to form one band; after which the whole of the fibrous material is
further moved along and conveyed into collecting vessels or chambers.
It is obvious that the provision of two or more doffers enables more material to
be treated by one carding engine. If the two (or more) strips of fibrous material,
thus obtained, were to be combined into one roll-shaped band, such band would
become two thick fr, inasmuch as the apparatus and machinery now used in
spinning mills for further treating, or operating upon, the band of fibrous material
as it comes from the card, are arranged to accommodate the thickness of single
strips of fibrous material only, such machines are precluded from being employed
without essential alterations, and a special arrangement, where it becomes
necessary to deal with the thick bands formed of double strips of fibrous material.
This difficulty is overcome by the present invention the object of which is to enable
the usual machinery for treating bands of fibrous material in spinning mills to be
retained while at the same time securing the advantage above referred to, owing to
which carding engines with two or more doffers may be used to produce two or more
thin bands. To obtain these, the fibrous material as it leaves the doffers, is first
divided into strips which are situated one above the other; these strips are then
caused to meet and combine and are as they proceed further collected in two or
more rotary or "pressing" chambers.
As shewn in Figures 1 and 2 of the accompanying drawings the doffers P¹ P
are fitted with what may be termed a dividing or separating arrangement, consisting
of narrow steel bands s which are held in yokes bib and are pressed against the
teeth or spikes of the doffers below the combs h. The upper yoke 6' is supported
by a rod or bar t extending between the side frames of the carding engine, while
the lower yoke 62 is secured to a conveniently fitted cross-tie or junction piece.
The yokes b' are also provided with wedge shaped flaps extending to a point in
close proximity to the comb.
The steel bands s cover over the fibrous material on the doffer at pre-determined
points, to protect it from being stripped off by the comb, in consequence of which
the fibrous material is taken off the doffer in separate strips which, after their
removal from the doffer, are finally separated, and kept apart, by the flaps or
extensions l.
The strips of fibrous material descending from the upper doffer are conducted
through flat funnels or guides B to the circular funnels T, while the lower strips of
fibrous material are conveyed to the last mentioned funnels direct.
In these funnels T, therefore, the upper and lower strips of fibrous material
combine into bands, which are then drawn off by rollers and, in the well known
mennor conducted to the coiler or pressing chamber P

page_text: Upon the doffers and also, consequently, upon the drum or card proper K, the
fibrous material now at the places occupied by the strips s remains intact, but a
worker A, moves backwards and forwards and constantly divides, or distributes,
the remaining strips, by moving them alternately to either side.
It will be observed that in the double-doffer card here shewa, the doffers are
arranged one over the other on one side of the drum or card. This arrangement
enables a powerful junction piece V, connecting the sides of the frame, to be placed
below the upper doffer, whereby additional steadiness or strength is imparted to
the carding engine. It is, however, necessary to construct the piece V in a some-
what peculiar manner, so that it shall not, as textile material collects thereon,-
hinder the work from smoothly following its course. The piece V should, therefore,
be placed concentrically against the surface of the drum, furnished with teeth or
points, and thus prevent the fibrous material adhering thereto from being repelled
and scattered by the said drum.
The upper side of the junction piece, also formed as a trough or tray, is similarly
situated close against the teeth of the top doffer, so that any fibrous material that
may collect thereon, is conveyed outside the engine. The narrow spaces between
the junction piece (thus acting as a "guard") and the points or teeth of the
rollers are closed in on the sides, so as to prevent the material from escaping
laterally.
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. In a carding engine, two or more doffers and separating devices for removing
the fibrous material in strips from the doffers, such strips being formed one above
the other in accordance with the situation of their respective doffers and then
united to form one band, and these bands being then guided further along and
conveyed to suitable collectors.
2. In a carding engine, two or more doffers and a junction piece below the upper
doffer, and so arranged against the surface of such doffer and that of the main roller
or card, as to serve as a guard for both, while at the same time adding to the strength
or firmness of the carding engine.
Dated this 9th day of May 1896.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.