Improvements in and relating to Spraying Devices for Use in con- nection with Apparatus for the Manufacture of Paper, Cellulose, and the like.
Year: 1899

page_text: Date of Application, 4th Nov., 1899-Accepted, 20th Jan., 1900
COMPLETE SPECIFICATION.
Improvements in and relating to Spraying Devices for Use in con-
nection with Apparatus for the Manufacture of Paper, Cellulose,
and the like.
I, ROBERT DILTRICH, of 5, Muhlberg, Merseburg, in the Empire of Germany,
Paper Manufacturer, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascei-
tamed in and by the following statement.-
This invention relates to a jet-tube arrangement or spraying device for use
in connection with apparatus for the manufacture of paper, cellulose wood-
fibie, and the like, and it has for its object the prevention of obstructions in
the water outlet-holes so as to maintain a uniform action
It is of particula importance in the regular working of 10tary knot catchers
felt-washers and so forth that the water-jet tube disposed above the drum of the
knot catcher should always uniformly moisten the entire surface of the dium,
and consequently that the holes in the jet-tube should not become stopped by
impurities Although various means have heretofore been proposed for this
pui pose they have not proved completely successful owing to the fact that
they are not based upon the principle of preventing the impurities from reach-
ing the jet-holes
To effectually prevent the impurities from choking or stopping the jet-holes
I propose
to provide the said holes at the upper portion of the tube and for
this purpose the tube is formed of such a cioss-section that, notwithstanding
the issue of water at the highest portion it permits the fiee ejection of water
Jets over the entire surface of the knot catchei.
Although in this manner great safety from the stoppage of the jet-holes 18
obtained, it is now proposed to render such stoppage piactically impossible by
the use of a sand and mud trap connected to the jet-tube for filtering the water
previously to its entrance into the jet-tube
The accompanying diawing shows a jet-tube_allangement constructed in
accordance with this invention
Figure 1 is an elevation partly in section of a portion of the jet-tube pro-
vided with the sand and mud trap.
Figure 2 is an elevation partly in section of the sand and mud tap shown
separately taken at night angles to Figure 1.
Figure 3 is a horizontal section of the sand and mud trap.
Figure 4 is a cross-section of the jet-tube taken on the line A B of Figure 1.
Figure 5 is a similar section taken on the line C D of Figure 1, and
Figure 618 & similar section showing a slightly modified form of jet-tube.
The sand and mud trap shown in Figures 1 and 2 consists of a cylindrical
vessel a formed with a lower tapering portion and provided with inlet and out-
let branches or sockets, and with a removable cover at the top preferably
fixed in place by means of screw bolts attached by eyes to the underside of the
flange of the vessel a such bolts being capable of swinging on their pivots In
the interior of the sand and mud trap a and close against the outlet-opening 18
rn

page_text: arranged a deflector plate the latter being curved and provided at the middle
with a number of small holes cl The water 18 caused to pass around the
deflector plate before it can pass through the two narrow passages leading to
the outlet socket As the current of water stukes the deflector plate it 18
uniformly divided and owing to the diffusion of the current in the wider pait
of the vessel, the particles of sand and mud are permitted to separate out from
the current and then drop into the lower portion of the vessel a from which
they are removed from time to time through a discharge cock d or the like.
The water thus purified then passes through the outlet bianch or socket e into
the jet tube f
The jet-tube 18 double chambered in cross-section and consist of a lower
tube g of circular, elliptical, semi-elliptical, egg-shaped or other convenient sec-
tion, and of a cap h surmounting the tube piopei This lower tube 9 commu-
nicates with the cap by a nanow opening ci slot specially provided for this
purpose.
The cap 18 narrow est at the opening
01 slot and 18 pro-
vided at its overhanging front-end with holes disposed at an angle
with the slot and delivering the water jets at & suitable angle to
the drum, see Figure 4 said holes being aanged at a higher level than
the said slot. The combination as well as the special form of the jet-tube
may be vailed in many ways without altering the nature of the invention
Thus for example the front portion of the cap may be caused to project so far
forward, and at the same time the jet-tube flattened at the side, so as to permit
of the water jets issuing in an almost vertical direction as shown in Figure 6
It will readily be seen that the water passing through the sand trap and
entering the jet-tubes will deposit at the bottom of the said tube any impurities
it may have canned with it, and this is further facilitated by giving such tube
an egg-shaped cross-section Figure 4 Moreover it 18 clear from the positio
of the slot with regard to the spraying holes that it is almost impossibl
for suspended substances in the water to enter the outlet portion of the spraying
tube. Thus the object of the arrangement is effected by the improved jet-tube
in the most perfect manner.
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 18:―
1. A jet-tube anangement or spraying device for rotary knot-catchers, felt-
washers and so forth for use in the manufacture of paper, wood fibre and cellu-
lose, characterized by a jet-tube having a divided cross-section consisting of a
lower water supply tube f formed with a small opening or slot & in its upper
portion and surmounted by a cap h provided with spray-holes arranged at a
higher level than the said opening or slot
2. In a jet-tube arrangement as claimed in Claim 1, the combination with
the jet-tube f of a mud and sand trap a in which the water current is deflected
from its straight course by a deflector plate c and caused to deposit suspended
substances in the tapered lower portion of-the said trap from which they can be
removed from time to time through a discharge or outlet device.
3. In the jet-tube arrangement claimed in Claim 2, a sand and mud tiap
characterized by a curved deflector plate e having holes for obtaining a uni-
form separation of the inflowing cuirent.
Dated this 4th day of November 1899.
HASELTINE, LAKE & Co,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.