Improvements in Burring-apparatus.
Year: 1896

page_text: .
COMPLETE SPECIFICATION.
Improvements in Burring-apparatus.
I, JONATHAN HOLDEN, of Reims, Marne, France, 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 of improvements in burring-apparatus has reference to improved
means of mounting and adjusting the burring-knives, and to a comb designed to
raise and detach the wool and the foreign matters attached to the feed-apron before
they reach the burring-knives.
In the accompanying drawings,
Fig. 1 is a front elevation and
Fig. 2 a cross section showing burring apparatus according to these
improvements.
The burring-knives which are of known kind, comprise two angle-iron bars F
and F¹ of which the surfaces that are turned towards the feed-apron T are well
planed. Upon these surfaces there are fixed two very thin strips a of tempered
sheet steel, which form the cutting edges of the knives. The bars F and F are
secured upon the planed faces of two angle-iron uprights P and P' carried by a
cross-beam C fixed on the framing of the carding-engine. The knives are held in
place by means of bolts 6 which are capable of being shifted in slots formed in the
standards P and P.
In order that the opening or slit between the knives may be regulated in a
more accurate and easy manner than heretofore and especially in order that the
position of the centre of the said opening or slit shall be fixed, the two bars F
and F are, according to this invention connected together at each end by a bolt V,
which has a right-handed screw-thread for one half of its length and a left-handed
screw-thread for the other half. Each of these bolts which are fixed in proximity
to the standards P and P¹ by means of supports S, engages in correspondingly
screw-threaded eyes or nuts E and E' fixed to the ends of the bars F and F', the
arrangement as will be seen being such that when the bolts V are rotated in a
right-hand or in a left-hand direction, the two knives will be caused to approach or
recede from each other and thereby increase or diminish the width of the opening
or slit .
With this means of mounting the knives, it is clear that an opening or slit of any
desired width can be produced in a very simple and absolutely exact manner,
whilst keeping the centre of the opening or slit exactly opposite the axis of the
roller R.
The knives extend from side to side of the carding-engine as described.
The wool and the foreign matters carried to the burring-knives by the apron T,
re embedded between the teeth of the said apron, and consequently are in an
unfavourable position for being treated by the knives and the roller R. Now the
bject of the comb herein before mentioned is to raise the material and partially
letach it from the teeth of the apron before it comes in front of the knives, in
uch a manner that the roller R shall be enabled to seize the wool as it is brought
pposite the slit a. The wool alone passes through the slit and the burrs, pieces of
traw, and other impurities remain on the other side of the knives and fall beneath
be apparatus.
As shown in the accompanying drawings, the comb comprises an ordinary comb
lade or strip p mounted on a cross-bar having two rounded and screw-threaded

page_text: ends f, engaging in slots in levers G and G¹ mounted on two eccentrics G and in
which slots the ends fare fixed by means of nuts and locknuts.
The eccentrics G are secured on a shaft d carried by brackets D and D', which
are fixed on the standards P and P¹ and are mounted and adjusted, as is usual,
with carding-devices, by means of an adjusting-screw and a locking screw-bolt.
The ends of the levers G and G are held by arms L pivoted at m, so that
when the eccentrics G are rotated by means of the shaft d, the comb is caused to
reciprocate up and down, the upward movement being combined with a backward
turning movement and the downward with a forward turning movement, so that
injury to the apron is avoided; and since the comb is adjusted in such a manner
that its teeth just dip to the ends of the teeth of the apron T and as the motion is
very rapid, it raises, without completely detaching, all inatter carried along by the
apron.
By pivotally mounting the ends of the comb in a slot in the levers G and G¹ the
position and inclination of the comb can be adjusted in accordance with the nature.
of the work to be done.
The shaft d may be rotated in the manner most suitable to.the carding-engine
employed.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In burring apparatus the combination with burring knives of the kind
described, of right and left handed adjusting screws whereby the distance apart of
the knives can be accurately varied and the position of the centre of the slit or
opening between the knives maintained constant, substantially as hereinbefore
described with reference to the accompanying drawings.
2. In burring-apparatus, comb-mechanism adapted to raise and partially detach
the wool or like material carried along by the apron towards the burring-knives,
substantially as herein before described with reference to the accompanying
drawings.
Dated this 8th day of February 1896.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.