Improvements in Centrifugal Drying Machines or Hydro-extractors.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Centrifugal Drying Machines or Hydro-extractors.
I, HENRY CROFTS LONGSDON, of Thorn Croft, Keighley, in the County of York,
Engineer, do hereby declare the nature of this invention to be as follows, that
is to say:
is well known
In connection with centrifugal drying machines it
that when the load is unevenly placed within the cage so that a greater
pressure is on one side than on the other, excessive friction is engendered by
the lateral strains of the axial shaft upon its bearings.
To relieve said shaft of its said excessive friction by arranging the bearings
to accommodate themselves to the position unto which said axial shaft is dragged
or forced by the unevenness of the cage's rotary movements under these condi-
tions is the object of my invention.
In accordance with my invention I arrange the footstep and its supplementary
bearings for the cage's axial shaft to be in the form of a ball and socket joint,
while the bearings approaching the upper end of the shaft are held in their
position laterally by springs arranged radially around same, by these means
as the cage revolves and is caused by its uneven load to transmit a gyratory
motion to the upper end of its axial shaft, the yielding and swivelling bearings
for this shaft allow such to act more freely so the excessive friction otherwise
produced is avoided.
Means are employed for preventing the swivelling footstep from revolving
and suitable brake mechanism is mounted to operate in connection with the
rotary cage or its axial shaft to arrest its motions as may be desired.
1 1000
Improvements in Centrifugal Drying Machines or Hydro-extractors.
I, HENRY CROFTS LONGSDON, of Thorn Croft, Keighley, in the County of York,
Engineer, 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, that is to say:
it is well known
that when the load is unevenly placed within the cage so that a greater
In connection with centrifugal drying machines

page_text: pressure is on one side than on the other, excessive friction is engendered by
the lateral strains of the axial shaft upon its bearings.
To relieve said shaft of its said excessive friction by arranging the bearings
to accommodate themselves to the position unto which said axial shaft is dragged
or forced by the unevenness of the cage's rotary movements under these condi-
tions, is the object of my invention, and this object I attain by following the
method of construction in the production of these machines as hereinafter
described and as shown by the accompanying sheet of drawings, wherein :-
Fig. 1 is a side clevation of a centrifugal drying machine constructed in
accordance with my invention.
Fig. 2 is a vertical section on line A-B of parts shown by Fig. 1.
Fig. 3 is sectional plan on line C-D) of parts shown by Fig. 2.
Fig. 4 is a sectional plan on line E-F of Fig. 2 and shows the arrangement
of certain of the parts hereinafter described.
In carrying my invention into effect I arrange the foot-step a and its supple-
mentary bearings 6, for the cage's axial shaft c, to be in the form of a ball and
socket joint, while the hearings & which are approaching the upper end of said
shaft are held in position laterally by springs f f arranged radially around
same, the bolts g g passing through these springs to be secured to said bear-
ings d at one end while their other ends press the springs f f against the
parts h h which are portions of the framework k, by which means as the cage m
revolves and is caused by its uneven load to transmit a gyratory motion to the
upper end of its axial shaft c, the yielding bearings d and the swivelling
bearings ab allow such to act more freely, thus the excessive friction otherwise
produced is avoided.
To prevent the swivelling bearings a from revolving, a bolt or projection n
fixed thereon is made to enter an opening made in the bearing b, said opening
being of such a shape as not to interfere with the oscillatory motions of the
part a but, said bolt n coming into contact with the walls of said opening, its
rotation is prevented.
The brake mounted upon the shaft s which carries the handle t, may be
brought into use by contact with the brake-wheel u whenever the operative
desires 'the motion of the cage to be more quickly arrested.
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 is:-
1. In machines of the class described, bearings for the rotary cages thereof,
the same being constructed and arranged to operate substantially as herein
specified.
2. In machines of the class described, a rotary cage, a vertical shaft on which
said cage is mounted, swivel bearings for said shaft and springs for acting
radially upon said shaft the same being constructed and arranged in combination
substantially as set forth.
3. Bearings for the rotary shafts of cages in machines for drying fibres and
other substances the same being constructed and arranged to operate substan-
tially as specified.
Dated this 28th day of „Dananal
1000