Improvements in Vertical Sliding Water Tight Doors.
Year: 1899

page_text: Improvements in Vertical Sliding Water Tight Doors.
I, VADIM ARSCHAOULOFF, of Polustrov Quai 19, St. Petersburg, Russia, Tech-
nologist, do hereby declare the nature of this invention to be as follows:-
In vertically sliding water tight doors at present in use the closing of the joint
depends upon a careiul fitting between the contact surfaces of the door and of
its fixed frame; it is somewhat difficult in such doors to insure this accurate fitting
of the contact surfaces, and the door is moreover easily put out of order by the
smallest injury thereto, or even by the warping of the bulkhead to which the
door frame is attached. Further, in water tight doors depending for their effective-
ness upon a rubber packing strip, the closing mechanism is usually of a com-
plicated nature owing to the necessity for keeping the door apart from the contact
surface of the fixed irame while it is being moved to its open or closed position,
in order to prevent the flaying or injury or the packing strip.
It is thus desirable to insure that the door shall only be brought to its water-
tight position after it has reached the limit of its stroke, when it can be firmly
pressed against the framework.
The object of the present invention is to provide a vertically sliding water
tight door which can be firmly pressed against the framework of the same, which
will be easy to operate and by mechanism which shall be simple, the sliding
door being of such a construction as will prevent any damage or injury to the
packing strip, provided around the edges of the door, when the same is operated.
The invention consists in the means whereby the sliding door is operated to
make the same watertight, and 1 attain this object by providing a door which
is capable of sliding within vertical guides on the operation of a screw, the door
being brought into its watertight position after the screw has reached the bottom
of its travel by means of the continued rotation of the screw through the medium
of a hand or crank mechanism, this further rotation serving to operate trunnions
arranged near the top. of the screw, these trunnions causing pivoted levers to
be raised and by this means to operate a horizontal shaft which transmits motion
to vertical shafts connected with the sliding door.
In carrying my invention into effect I provide a framework of angle irons of
the usual construction secured to the bulkhead and above this frame two standards
or guides of similar cross section are secured; to the outer ends of the frame two
vertical cylindrical or tubular sleeves are secured provided on their inner sides
with a longitudinal slot; within these sleeves vertical shafts are fitted each having
a longitudinal groove running along the inner surface, the upper ends of the
shafts being journalled in the sleeves of a cross box or girder, secured to the
standards, which serves as a casing for the actuating mechanism, the door being
capable of sliding in the grooves provided in the vertical shafts, these grooves
serving to guide the door in its travel.
'
The up and down movements of the door are obtained by means of a vertical
screw or worm, whose lower end is journalled in a step bearing secured on the

page_text: upper cross beam of the frame, the upper end of the screw being journalled within
a sleeve upon the cross box or girder hereinbefore referred to; this screw is actuated
directly or by means of any suitable transmission gear.
The upper edge of the door is bent inwardly to form a fork, this fork embracing
a nut through which the screw passes in such a manner that the rotation of the
screw causes the nut and with it the sliding door to rise or fall as determined by
the direction of rotation of the screw.
The door is caused to press or to be forced laterally against the frame in the
following manner: -
The upper extremities of the vertical shafts carry toothed conical sectors gearing
with similar sectors fixed upon a horizontal shaft journalled in the cross box or
girder. At about the middle of this shaft two arms or levers are secured, having
trunnions provided within their free extremities, these trunnions being engaged
between two shoulders or collars of the vertical sliding screw. Upon the upward
or downward motion of the door the screw bears upon the bottom step bearing
the arms remaining inclined outwardly; the sectors upon the vertical shafts
engaging with other sectors upon the horizontal shafts serve to maintain the
vertical shafts in such a position that their longitudinal grooves within which
the webs of the door rest are at a certain fixed distance from the external rib of
the frame. On the rotation of the screw the door will descend to a position in
which the nut will rest upon the step bearing attached to the cross beam of the
frame, and when the door is in this position a further rotation of the screw in the
same direction will cause the same to rise while the collar, which is secured above
the top of the screw threads, will lift the trunnions and thus cause the pivoted
levers to move upwardly and rotate the horizontal shaft, transmitting motion by
means of the toothed sectors to the vertical shafts provided with grooves along
which the web of the door slides. These shafts will thus turn in their bearings
and the grooves together with the door will be caused to approach the fixed frame,
the rubber packing being thereby firmly compressed between the door and the
frame thus insuring a water-tight connection.
It will be seen that upon the rotation of the screw in one direction the door will
be caused to slide and be pressed firmly against the framework while when the
screw is operated in the opposite direction the door will first clear itself of the
framework and will be caused to slide upwardly, its web resting within the grooves
provided on the inner surface of the vertical shafts.
Dated this 2nd day of December 1899.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents.
Improvements in Vertical Sliding Water Tight Doors.
I, VADIM ARSCHAOULOFF, of Polustrov Quai 19, St. Petersburg, Russia, Tech-
nologist, 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; -
In vertically sliding water-tight doors at present in use the closing of the
joint depends upon a careful fitting between the contact surfaces of the door and
of its fixed frame; it is somewhat difficult in such doors to insure this accurate

page_text: fitting of the contact surfaces, and the door is moreover easily put out of order by
the smallest injury thereto, or even by the warping of the bulkhead to which the
door frame is attached. Further, in water-tight doors depending for their effective-
ness upon a rubber packing strip, the closing mechanism is usually of a com-
plicated nature owing to the necessity for keeping the door apart from the contact
surfaces of the fixed frame while it is being moved to its open or closed position,
in order to prevent the flaying or injury of the packing strip.
It is thus desirable to insure that the door shall only be brought to its water-
tight position after it has reached the limit of the stroke, when it can be firmly
pressed against the framework.
The object of the present invention is to provide a vertically sliding water-
tight door which can be firmly pressed against the frame-work of the same, which
will be easy to operate and by mechanism which shall be simple, the sliding door
being of such a construction as will prevent any damage or injury to the packing
strip, provided around the edges of the door, when the same is operated
The invention consists in the means whereby the sliding door is operated to
make a water-tight closure, and I attain this object by providing a door which
is capable of sliding within vertical guides on the operation of a screw, the door
being brought into its water-tight position after the screw has reached the
bottom of its travel by means of the continued rotation of the screw through the
medium of a hand or crank mechanism, this further rotation serving to operate
trunnions arranged near the top of the screw, these trunnions causing pivoted
levers ta be raised and by this means to operate a horizontal shaft which trans-
mits motion to vertical shafts connected with the sliding door.
Referring to the accompanying drawings:
Figure 1 is a frent elevation of the sliding door constructed according to the
invention, the left hand half of the view showing the door in its opened position
and the right hand half in its closed position.
Figures 2 and 3 are respectively side and side sectional elevations corresponding
to Figure 1 showing the door closed.
Figure 4 is a sectional plan on the line A B Figure but on an enlarged
scale.
Figures 5 and 6 are sectional plans on the line CD Figure 3 the one showing
the door in its lowered position but not closed water-tight and the other showing
it forced firmly against the bulkhead to make a water-tight jointing.
In carrying my invention into effect I provide a framework of angle iron of
the usual construction secured to the bulkhead and above this frame two standards
or guides b of similar cross section are secured; to the sides of the frame two
vertical tubular sleeves ce are secured provided on their inner sides with a
longitudinal slot; within these sleeves vertical shafts d d are fitted each having
a longitudinal groove e running along the inner surface, the upper end of the
shafts being journalled in the sleeves f, f, of a cross box or girder g, secured to
the standards b b, which serves as a casing for the actuating mechanism, the
web h of the door sliding in the grooves co provided in the vertical shafts, these
grooves serving to guide the door in its travel.
The up and down movements of the door are obtained by means of a vertical
screw or worm whose lower end is journalled in a step bearing & secured on the
upper cross beam of the door frame, the upper end of the screw being journalled
within a sleeve upon the cross box or girder g. The screw is actuated directly
or by means of any suitable transmission gear.
The upper edge of the door is rearwardly curved to form a fork, this fork
embracing a nut 7 through which the screw passes in such a manner that the
rotation of the screw causes the nut and with it the sliding door to rise or fall
as determined by the direction of rotation of the screw.
The door is caused to press or to be forced laterally against the frame in the
following manner;

page_text: The upper extremities of the vertical shafts d d carry toothed conical sectors m m
gearing with similar sectors n n fixed upon a horizontal shaft o journalled in the
cross box or girder g. At about the middle of this shaft two arms or levers pare
secured, the other ends of the arms p being provided with trunnions qq which
project from the sides of the arms p p towards and facing each other, said
trunnions engaging between shoulders or collars q' q' on the vertical sliding screw.
Upon the upward or downward motion of the door the screw bears upon the
bottom step bearing the arms 2 being left stationary; the sectors m engaging
with the other sectors serve to maintain the vertical shafts d d in such a
position that their longitudinal grooves ae within which the web h of the door
rests are at a certain fixed distance from the external rib of the frame a. On the
rotation of the screw the door will descend to a position in which the nut will
rest upon the step bearing k attached to the cross beam of the door frame, and
when the door is in this position a further rotation of the screw in the same
direction will cause the same to rise while the shoulders or collars q' which are
secured above the top of the screw threads, will lift the trunnions 7 and thus
cause the pivoted levers pp to move upwardly and rotate the horizontal shaft,
transmitting motion by means of the toothed sectors n, m to the vertical shafts d d
provided with grooves e e along which the web h of the door slides. These shafts
will. thus turn in their bearings and the grooves together with the door will be
caused to approach the fixed frame a, the rubber packing being thereby firmly
compressed between the door and the frame thus insuring a water-tight connection.
It will be seen that upon the rotation of the screw in one direction the door
will be caused to slide and be pressed firmly against the framework, while when
the screw is operated in the opposite direction the door will first clear itself of the
framework and will then be caused to slide upwardly, its web resting within the
grooves provided on the inner surface of the vertical shafts.
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:
:
The combination with a vertical sliding watertight door of two vertical shafts
provided with longitudinal slots or grooves forming guides for the edges of the
door the latter being raised or lowered by a screw working in a nut fixed to
the same, the said nut bearing in the lowest position of the door against a stop,
which on further rotation of the screw causes the same to move vertically the
movement being utilised through suitable means to partially rotate the vertical
shafts and thereby force the door firmly against its seating to secure a water-
tight closure substantially as described and illustrated.
Dated this 1st day of September 1900
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents.