Improvements in Apparatus for Straining Paper Pulp and like Materials.
Year: 1898

page_text: Date of Application, 27th Apr., 1898
Complete Specification Left, 25th Jan., 1899-Accepted, 27th Apr., 1899
Improvements in Apparatus for Straining Paper Pulp and like
Materials.
We, HERBERT SANGUINETTI, of 16, Old Bond Street, in the County of London,
Gentleman, and PERCY HERBERT SANGUINETTI, of Frogmore Mill, Hemel Hempstead,
in the County of Herts, Paper Maker, do hereby declare the nature of this invention
to be as follows:-
This invention has reference to improvements in the machinery for straining paper
pulp and the like materials of the character described in the Specification of Letters
Patent granted to Carl Heinrich Roeckner and Frank Lionel Roeckner dated June 30th
1885, No. 7932, and in the Specification of Patent granted to Frank Lionel Roeckner
and Ramsey Llewellyn Roeckner dated May 13th 1892 No. 9126, for certain improve-
ments thereon.
The strainers described in the before mentioned specifications are cylindrical in
form, contained in the pulp vat, and are made in one with, or mounted on a three,
four or other suitable multi-armed partition or fan and this fan and cylinder are
carried by a suitable shaft and bearings, so that they may receive an oscillatory
motion through a small are with more or less rapidity on their axes.
According to our present invention we make the cylindrical strainer of several
separate sections and these sections we build up into a complete cylinder by means
of overlapping intersecting part joints and arranged to rest over the edges
of the fan blades. Over these joints are laid strips or bands and through these bands
the lapping joints and into the wings or arins of the fan are passed screwed bolts, so
as to unite the whole into a complete cylinder. Or, in place of screwed bolts equivalent
fastening means may be employed.
In the construction of the parts, whereby the connection between the cylindrical
strainer and the vat for receiving the strained pulp is attained, so that
(while passage of all pulp to the vat, except through the strainer is prevented)
the strainer parts are capable of performing freely their oscillatory motions
-we modify the parts adjacent to the reducing end of the cylinder, that is to
say the part of smaller diameter through the interior of which the strained
pulp passes to the vat. We form the said reducing end with a flange which with
end portions of the fan forms a groove to receive the edges of the strainer plates
and by means of screw bolts or like means the whole is tightly secured together.
The delivery end of vat next to the bearing for the cylinder and fan shaft projecting
thereinto we cast in a separate piece, so that it can be removed in order to enable the
rubber sleeves employed to make a liquid tight sealing, but at the same time elastic
joint, to be replaced as may be required without necessitating the removal of the
cylinder and fan as has heretofore been rendered necessary by the constructions
described and shewn in the prior specifications referred to.
In order to leave a clear way free from obstructions we make the end of the cylinder
opposite the reducing end with an outwardly turned flange and we fit the closing end
of the same against said flange so that the bolts or other means of fastening may pass
therethrough to secure the parts together.

page_text: The bearings on the end of the cylinder shaft and carrying the fan are arranged in
bearings which are located outside of the vat, and so that no water or chemicals can
get to these bearings to injure them.
Dated this 27th day of Anril 1908
Improvements in Apparatus for Straining Paper Pulp and like
Materials.
We, HERBERT SANGUINETTI, of 16, Old Bond Street, in the County of London>
Gentleman, and PERCY HERBERT SANGUINETTI, of Frogmore Mill, Hemel Hempstead>
in the County of Herts, Paper Maker, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
This invention has reference to improvements in the machinery for straining paper
pulp and the like materials, of the character described in the Specification of Letters
Patent granted to Carl Heinrich Koeckner and Frank Lionel Roeckner, dated
June 30th 1885 No. 7932, and in the Specification of Patent granted to Frank Lionel
Roeckner and Ramsey Llewellyn Roeckner dated May 13th 1892, No. 9126, for
certain improvements thereon.
The strainers described in the before mentioned specifications are cylindrical in
form, contained in the pulp vat and are inade in one with, or mounted on a three,
four or other suitable multi-armed partition, or fan and this fan and cylinder are
carried by a suitable shaft and bearings, so that they may receive an oscillatory
motion through a small are with more or less rapidity on their axes.
According to our present invention we make the cylindrical strainer of several
separate sections and these sections we build up into a complete cylinder by means of
overlapping intersecting joints, and arranged to rest over the edges of the fan blades,
and we make certain other improvements in construction as will be described.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a side elevation of a vat and strainer according to the present
invention.
Fig. 2 is a plan of the same and Fig. 3 is an end elevation thereof.
Fig. 4 shows by side view partly in section the construction of the improved
strainer removed from the vat.
Fig. 5 shows an end view and Fig. 6 a cross section of the strainer Fig. 4 provided
with three armed blades, wings or partitions.
Fig. 7 shows by end view and Fig. 8 by a similar cross section to Fig. 6 a
modification in that four such arms, blades or partitions are provided.
Fig. 9 shows a sectional view of a detail being the mode of affixing the separate
sections of the strainer and the partitions or wings together by means of overlaying
strips and screw bolts.
Fig. 10 shows by side view and Fig. 11 by sectional view separately to an enlarged
scale the details of the straps for securing the rubber sleeves to their necks or
collars.
Figs. 12 and 13 show edge and side views respectively of one of those adjustable
clasping devices l.

page_text: Fig. 14 shows by plan view and Fig. 15 by end view a pair of the attachments
such as just described for attaching one of the rubber sleeves 2 to its collars 5
and 6.
a is the vat to contain pulp. b is the strainer, which is mounted on the partition
or fan c, which fan is carried by the shaft d, which is mounted in bearings e, e¹, one
at either end. The end of the said shaft carried in the bearing e is first passed through
an opening at a¹ in the vat a, and this end has mounted on it the crank arm f to the
outer end of which arm is attached one end of the connecting rod g, the other end
being connected to the crank plate / mounted on and driven by the axis of suitable
driving mechanism j.
Referring to Figs. 4 to 9 61, 6' are the separate sections which when built up go to
form the complete cylinder b. Each section b (refer to Fig. 9) is at its meeting edge
reduced in thickness, or, as shown, halved, so that the two half thicknesses 62, 63
respectively of adjacent sections lie one over the other, and the screw bolt 65 being
passed through coincidently made holes in said plates, and into a tapped hole in the
fan blade c the parts are drawn tightly together but in order to unite the parts more
securely we lay over the joints of the sections 62, b2 strips or bands of metal b* formed
with holes corresponding with the bolt holes in the plates 61 and pass the bolts to first.
therethrough. In place of screwed bolts other equivalent means of fastening may be
employed.
In the construction of the parts, whereby the connection between the cylindrical
strainer and the vat for receiving the strained pulp is attained, so that the strainer
parts may be capable of performing their oscillatory motions with freedom whilst all
passage of pulp from the vat, except through the perforations (as indicated at a) of
the strainer b is prevented, we modify the parts adjacent to the re:lueing end be of
the cylinder b, through which end the strained pulp passes to and through the open-
ing a¹ in the end of the vat a to the outlet chamber a² for conveyance away in usual
manner. We form the said reducing end 66 with a flange 67 which flanged end
together with the end portions c¹ of the fan c forms a groove adapted to receive the
edges of the strainer plates b¹ and these parts are by means of screw-bolts e² or like
means tightly secured together.
The delivery end of the vat aat a² next to the bearing e¹ for the shaft d we cast
in a separate piece ³, which, as shown, is connected by means of flanges on the
abutting parts, packing, and screw bolts at a so that such end a³ may be moved to
make a clear passage to enable the rubber sleeve k¹, employed to make a liquid tight
sealing, between the neck 3 of the reducing end 60 and the collar 4 of the vat a,
around the opening a¹, whilst at the same time producing an elastic joint, to be
removed and replaced as may be required-as, for instance, should the rubber split―
without necessitating the removal of the cylinder b and the fan c whereas in construc-
tions described and shown in the aforesaid specifications such removal has been
necessary before such renewals could be effected.
In order to leave a clear way or passage free from obstruction, when required, we
make the end. 68 of the cylinder b, opposite to the reducing end 66 with an outwardly
turned flange and we fit the closing plate, or end, 6º of the cylinder b against said
flange at 68 so that the bolts 10, or other means of fastening may pass therethrough
to secure the parts together, as shown.
The bearings e and e¹ for the ends of the cylinder shaft d and carrying the fan c
are arranged, as shown, so as to be located outside of the vat, and so that no water,
or chemicals can get access to the bearing parts to injure them.
In order to avoid the use of stuffing boxes and glands to pack the bearings of the
shaft d at the parts where that shaft passes through the vat a and the compart-
ment a² to prevent escape of water past the shaft, and to secure a liquid tight sealing
of those parts in the oscillatory motion of the shaft d, sleeves,, are secured
over those portions of said shaft so as to completely enclose them without frictional
contact therewith. This is effected respectively by fitting the sleeve k, at its left
band end (referring to Figs. 1 and 2) upon a collar or enlargement 1 applied to the

page_text: inner wall of the casing or vat a and the right hand end of said sleeve is fitted upon
the neck or collar 2 of the reciprocating strainer b.
The sleeve in like manner is at its opposite ends fitted respectively on the neck
or collar 3 of the reducing end 66 and on the neck or enlargement 4 applied to the
wall of the casing or vat a.
The sleeve 2 in a similar fashion is fitted at its one end on the collar 6 formed on
the sleeve or bearing 5 projecting from the outside of the vat a into the compart-
ment a² and said sleeve ² is at its opposite end fitted on the neck or collar 6 of the
bearing a connected by the flanged end piece a³.
These sleeves k, k¹ and k² are held securely so as to form a liquid tight joint at
each end thereof respectively with the parts 1, 2, 3, 4, 5 and 6 by means of straps
during the twisting motions imparted to these elastic sleeves in the oscillatory
movements of the parts carried by the shaft d.
These straps and their parts as applied to the sleeves k, k¹ and k² are substantially
alike except as to diameter.
These connecting straps are formed as a band of pliable metal rivetted to the ends
of which are lugs, 12 through which are passed the screw bolts 13; upon the screwed
end of strap is placed the screw nut 4 for tightening up and drawing together the
ends of the bands upon the rubber sleeves k, k¹ or 2 as shown.
According to the methods of constructions employed as stated prior to our present
invention, in order to replace a fan, or a strainer plate, or renew the rubbers it was
necessary to take away the driving crank remove the plummer block, remove all the
bolts around the loose end of the vat, remove the opposite plummer block, then the
fan and strainer tube, then replace with a fresh fan and tube, or withdraw the tube and
replace with a coarser or finer one as night happen to be required; whereas by the
employment of our improved construction of these parts all that is requisite is to take
off the desired section or sections of the strainer tube or plate b, by simply removing
the bolts 610 from the loose ring on the driven end of the fan c and the studs b
running along the lap joint 62 63 of the strainer plates 6¹, and the studs on ring of
the reducing end of same.
The receiving box or outlet chamber a² instead of being formed only with an
opening for the shaft carrying the fan, as heretofore, is by our improvements made
with a removable end bolted, as stated, to the body of the vat.
If the rubbers require replacement, by our new arrangement as described, it is
only necessary to remove the cap or the whole of the plummer block e¹ at the end
opposite to the driving end and the removable plate 3 of the receiving box a², then
remove the damaged rubbers and replace them with new.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. The method of construction of the strainer tubes or cylinders of paper or
like pulp straining apparatus so that the sections of the same and the parts
connecting them together may be readily separable, or some one or more of same,
as and for the purpose set forth.
2. The construction, arrangement and use in combination of parts of strainer tubes
or cylinders and their contained fans or divisions, as set forth with reference to
Figures 4, 5, 6, 7, 8 and 9.
3. The construction and arrangement of the parts of strainers as described in
Claim 1 in combination with the arrangement of the bearing parts of the axis
thereof outside of the vat and a removable portion, affixed to the delivery end, of the
vat all substantially as and for the purpose set forth and shown by the
drawings.
4. The combination and arrangement of parts of apparatus for applying and
securing the rubber sleeves in making the liquid tight joints between the
relatively reciprocating parts of apparatus for straining paper pulp and like

page_text: material, substantially as set forth and illustrated, by the drawings particularly in
Figs. 10, 11, 12, 13 and 14.
5. The construction, arrangement and use of straining apparatus for pulp of the
kind described, so that a part, or parts, of the strainer, its fan or divisions, or the
5 rubbers, making its liquid tight joints, may be removed, or replaced without
removal from the machine of heavy accessory parts, as set forth.
Dated this 25th day of January 1899.
WM. BROOKES & SON,
55 and 56, Chancery Lane, London, Agents for the Applicants.