Improvements in Door Mountings.
Year: 1893

page_text: Date of Application, 22nd Aug., 1893
Complete Specification Left, 22nd May, 1894-Accepted, 22nd Aug., 1894
PROVISIONAL SPECIFICATION.
Improvements in Door Mountings.
I FREDERICK WILLIAM GOLBY of 36 Chancery Lane, in the County of
Middlesex, Patent Agent do hereby declare the nature of this invention as
communicated to me by Wilhelm Bertram of Lauban, Silesia, Germany,
Manufacturer to be as follows :-
The object of this invention is to provide means for shutting a door noiselessly
and to introduce an arrangement characterized by an airtight closing between the
door and the door-posts.
On each post of the door is longitudinally fixed a concave plate of sheet-metal,
forming half a hollow-cylinder, both vertical edges of which are bordered by
narrow strips of felt on its inner side. When the door is turned around its axle
(hinges) a rounded side piece formed on the hanging style of the door turns in said
half cylinder, sliding on the strips of felt, whilst a bolt attached to the hanging
style of the door, or a small longitudinal listel reaching from the bottom to the top
of the said-pieces aforesaid, limits the opening movement of the door.
By the striking of the bolt or of the small listel against one or the other strips
of felt, the movement of the door is thus limited in one or the other direction, the
strips securing at the same time the air-tight-closing between the door post, and the
rounded side part of the door.
The other niche-like plate of sheet metal maintains the second or lock door-posts,
which is distinguished from other lock door-posts by its being able to be turned
inside the cavity of the plate and that this turning of the door-post is necessary for
the opening and closing of the door. In one of its positions this door-post forms
the closing-arrangement of the closed door.
The special arrangement of this lock door-post may be of two different modifica
tions. In the first, the door-post consists of two parts, joined together by vertical
axle-like hinges. The two-folded parts form a longitudinal groove in which the
fore-cant of the closed door is held.
The second modification is a turnable door-post which is not divided but has a
bevelled listel, which engages with a similarly bevelled cant of the closed door, and
which thus holds this cant in position.
In both cases felt-plates are disposed between the planes of contact; first in
order to provide a tight closing of the door, secondly to render it possible for the
door and door-post to come into contact with each other without any noise. If a
divided door-post be used, both the side surfaces of the groove are provided with
felt-plates, whilst if there is a non-divided door-post, the bevelled listel alone is
covered with felt.
For altering the closing position of the door-post, a latch or knob must in every
case be used and lifted or turned in the usual manner. This latch or knob is
arranged beside the closing door-post, and its tumbler carries a toothed wheel
at the inner side of a lock-box worked in or attached to the wall. In the example
first mentioned this cogged wheel gears with a rack bar which can be moved to and
fro in the lock box. The end of the rack-bar projecting out of the box through
the sheet-metal of the door-post is joined, by means of flexible bands ropes or
chains with each half or part of the door-post or with but one of these, in such a
manner that by turning said knob, in one or the other direction, the rack-bar is
drawn into the lock box and the two parts of the door-post are drawn one from
the other. By this process the fore-cant of the door becomes free, and the door
can be opened.

page_text: In order to maintain the parts of the door-post, now seperated, in their new
posicion and to enable the same person who turned the knob to open and pass
through the door, a hook is provided at each part of the door-post, which slides
behind a bolt when the respective part of the door-post is opened. Each of these
bolts consists of two small lever-arms which turn on one and the same axle inside
of the half-cylinder of sheet metal of each door-post. Both the bolts are
maintained stiff in their position by a small cross-bar and are kept in this position
by a spring, so that the inclined surfaces of both the hook-noses during the turning
of the door-post, first slide along the bolts under the influence of a bent-spring, and
then fall in behind these bolts.
If the door is to be closed again it is necessary first to turn it in the position for
locking, and then to turn the knob back. Thereupon the rack-bar is again pushed
out of the lock-box and the flexible bands become loose, but the parts of the door-
posts are not yet caused to return in their position because they are held by the
hooks. When however a pin on the rack-bar pushes the bolts away from the hook-
noses, some weak springs fixed at the other sides of the parts to be moved, cause
them to return to their former position.
To prevent incompetent persons from opening and closing the parts of the
door posts and the door, the turning of the knob may be stopped by simply
inserting a pin in the bore of the tumbler, so that it is not possible to move it out
of its position. This pin may be in connection with a small eccentric which is
turnable from outside by means of a key; by which turning the pin is pushed down
against the action of a small spring which raises and keeps the pin in a higher
position.
In the second example in which the turnable door-post is not divided in two parts,
the tumbler of the knob carries a nose, which strikes against another nose of the
rack-bar, and thus thrusts this bar out of the lock-box when the knob is turned in
one given direction. The rack-bar gears with a cogged wheel turning on the same
axle as the door post, therefore this post with its listel is turned away from the
closed door which may then be opened.
In this open position the door-post is kept by a lever-arm which is turnably
bedded in the lock-box and is engaged with one of its arms in a thread of a screw
in the tumbler. By this arrangement the second end of the hook is pushed behind
the rack-bar mentioned. If on the other hand the knob of the door is turned in
the other direction, the hook of the lever will be pulled from the end of the rack-bar
by means of said thread of a screw and a spring interposed between a fixed
additional piece and the head of the rack-bar pushes the latter again backward, by
which movement the door-post in question is caused to return to the closing
position. During this turning of the knob, the one nose comes on the other side of
the nose on the rack-bar and the returning of this bar is now completely assured
even if the spring serving for that purpose should abstain from action.
By this modification too, the turning of the knob may be stopped in the same
way as explained in the case of the first example.
The arrangement here described is preferably made use of in doors of railway-
carriages, and of coaches, but may also be used for any sort of doors whatever.
The second method is preferably adapted for doors of great width, when no openings
or windows are provided in them.
It is possible to make use of the arrangement also in such a manner that the
closing contrivances are attached to the leaves of a folding door, at the same time
providing one of the door posts with a listel, which is engaged by cheeks turnably
fixed at the door. The opening of that door takes place in the same manner as
described before, viz.: by turning the knob and by means of the cog-wheeled
gearing and the flexible bands as before mentioned: but the attaching of closing
devices may be dispensed with, because the person who turns the door knob can
first fix the latter in the same manner as before said by using a pin pushed into the
tumbler.
If on each side of the tumbler, that is to say on each side of the door a knob or

page_text: handle is provided to that tumbler, it is of course possible to lock the door from
either side. In the same manner the other method is explained in the second
example, can be performed by attaching the closing devices to the leaves of the
folding-doors, and in arranging the bevelled surfaces of the door-posts.
In carring out this invention, parts of the arrangements before mentioned may
be interchanged or varied and the invention may be applied to various arrangements
of door closings of the character indicated.
D-11 f Ammunt 1002
F. W. GOLBY,
36, Chancery Lane, London, W.C.
COMPLETE SPECIFICATION.
Improvements in Door Mountings.
I FREDERICK WILLIAM GOLBY of 36 Chancery Lane in the County of
Middlesex, Patent Agent, do hereby declare the nature of this invention as
communicated to me by Wilhelm Bertram of Lauban, Silesia, Germany,
Manufacturer, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
The object of this invention is to provide means for shutting a door noiselessly
and to introduce an arrangement characterized by an airtight closing between the
door and the door posts.
In the accompanying drawings
Figure 1 is an elevation of part of a door fitted with this invention. Figure 2 is a
plan of same and Figure 3 shews a plan view with the door partly open.
Figures 4 to 7 shew modifications and details which will be explained
hereinafter.
The same letters of reference where they occur in the several figures are used to
indicate the same or corresponding parts.
On each post of the door is longitudinally fixed a concave plate of sheet metal
forming half of a hollow cylinder A B both vertical edges of which are bordered
by narrow strips of felt on its inner side A' A' and B¹ B. When the door is
turned around its axle (hinges) a rounded side piece formed on the hanging
style of the door turns in said half cylinder A sliding on the strips of felt A'A',
whilst a bolt attached to the hanging style of the door, or a small longitudinal
listel or fillet C reaching from the bottom to the top of the side piece aforesaid
limits the opening movement of the door.
By the striking of the bolt or of the small listel or fillet C against one or the
other strip of felt A' A' the movement of the door is thus limited in one or the
other direction the strips A¹ A₁ securing at the same time the airtight closing
between the door post A and the rounded side part of the door.
The other concave plate of sheet metal B maintains the second or lock door post
which is distinguished from other lock door posts by its being able to be turned
inside the cavity of the plate B and that this turning of the door post is necessary
for the opening and closing of the door. In one of its positions this door post forms
the closing arrangement of the closed door.
The special arrangement of this lock door post may be of two different modifica-
tions. In the first shewn in Figures 1 to 3 the door post consists of two parts D
and D', joined together by vertical axle like hinges. The two folded parts D and D'
form a longitudinal groove in which the outer style of the closed door is held. The
second modification is shewn in Figure 4 and consists of a turnable door post which
is not divided but has a bevelled projection D' which engages with a similarly
bevelled cant E of the closed door, and which thus holds this cant in position.
In both cases felt plates are disposed between the planes of contact, first in order
to provide a tight closing of the door, and secondly to render it possible for the

page_text: door and door post to come into contact with each other without any noise. If a
divided door post be used, both the side surfaces of the groove are provided with
felt plates E E' as shewn in Figs. 2 and 3 whilst if there is a non-divided door
post, the bevelled cant E³ alone is covered with felt (as in Figure 4).
For actuating the parts D & D' of the lock door post, or for rotating the turnable
door post a latch or knob F must in every case be used and lifted or turned in the
usual manner. This latch or knob F is arranged beside the closing door post, and
its tumbler carries a toothed wheel F¹ at the inner side of a lock box G worked in
or attached to the wall. In the example shewn in Figures 1 to 3 this cogged
wheel F gears with a rack bar H which can be moved to and fro in the lock
box G. The end of the rack bar projecting out of the box through the sheet metal
door post cylinder B containing the moveable parts D and D' of the lock is joined
by means of flexible bands, ropes, or chains I and I' with each half or part D D'
of the door post or with but one of these in such a manner that by turning said
knob F in one or the other direction, the rack bar H is drawn into the lock box G
and the two parts D and D₁ of the door post are drawn one from the other into the
position shewn in Figure 3. By this operation the outer style of the door becomes
free, and the door can be opened.
In order to maintain the parts D and D' of the door post, now separated, in their
new position as shewn in Figure 3, and to enable the same person who turned the
knob to open and pass through the door, a hook K and K¹ is provided at each
part D and D' of the door post which slides behind a bolt L and L' when the
respective part of the door post is opened. Each of these bolts consists of two
small lever arms which turn on one and the same axle inside of the half cylinder of
sheet metal of each door post. Both the bolts are maintained stiff in their position
by a small cross bar and are kept in this position by a spring, so that the inclined
surfaces of both the hook-noses during the turning of the door post, first slide along
the bolts under the influence of a bent spring, and then fall in behind these bolts.
If the door is to be closed again it is necessary first to turn it in the position for
locking and then to turn the knob F back. Thereupon the rack bar H is again
pushed out of the lock box G and the flexible bands I¹ I become loose, but the
parts of the door posts are not yet caused to return to their position because
they are held by the hooks K and K. When however a pin H' (shewn in Fig. 1,).
on the rack bar H pushes the bolts L and L' away from the hook-noses, some weak
springs P and P' fixed at the other side of the parts to be moved, cause them to
return to their former position.
To prevent incompetent persons from opening and closing the parts of the door
posts and the door, the turning of the knob F may be prevented by simply inserting
a pin Q in the bore of the tumbler, so that it is not possible to move it out of its
position. This pin Q may be in connection with a small eccentric Q which is
turnable from outside by means of a key; by which turning the pin Q is pushed
down against the action of a small spring Q which tends to raise and keep the pin
in a higher position.
In the second example shewn in Figure 4 in which the turnable door post is not
divided in two parts, the tumbler of the knob carries a nose F' which strikes against
another nose H³ of the rack bar H (see Figure 6), and thus thrusts this bar H out of
the lock box G when the knob is turned in one given direction. The rack bar H
gears with a cogged wheel R secured to the door post D' therefor this post with
its bevelled projection D³ is turned away from the closed door into the dotted
position shewn in Figure 4 and the door may then be opened.
In this open position the door post is kept by a lever S which is turnably bedded
in the lock box G and by means of a projection S' on one of its arms is engaged in
a cam groove F on the tumbler (see Figure 5). The cam groove is so made that
the lever S is not operated until after the nose F" on the tumbler has reached
the middle position when the head T' of the rack bar H is out of the path.
of the hook S₁ on the lever S. Continued rotation of the tumbler then operates
the lever $ causing the hook S' thereon to be brought behind the head T* of the

page_text: rack bar H. After the nose F' has left the nose H³ the spring T interposed
between the fixed additional piece T¹ and the head T' of the rack bar H comes
into action and forces the rack bar back until its end abuts against the hook S¹
which lies in its path and thus forms a stop preventing the further return of the
rack bar. The nose H' on the rack bar is then in the middle position and when
the handle F is turned in the other direction the operative part of the cam groove
will by means of the pin S' pull the hook S¹ of the lever S away from the end T'
of the rack bar. The spring T will then come into operation and return the rack
bar to the normal position shewn in Figure 4, but this return will be assured by
the nose F on the tumbler acting on the nose H' on the rack bar returning this
bar even if the spring T should abstain from action.
By this modification too, the turning of the knob may be stopped in the same
way as explained in the case of the first example.
The arrangement here described is preferably made use of for the doors of
railway carriages, and of coaches, but may also be used for any sort of doors
whatever. The second method is preferably adapted for doors of great width
when no openings or windows are provided in them.
It is possible to make use of the arrangement also in such a manner that the
closing contrivances are attached to the leaves of a folding door as shewn in
Figure 7, at the same time providing one of the door posts with a listel or fillet U
which is engaged by cheeks turnably fixed to the outer style of the other door.
The opening of that door takes place in the same manner as described before, viz. :—
by turning the knob and by means of the cog wheeled gearing and the flexible
bands as before mentioned, but in this modification it is preferable that the person
who turns the door knob should fix the latter in the same manner as before said by
using a pin pushed into the tumbler.
If on each side of the tumbler, that is to say, on each side of the door, a knob or
handle is provided to that tumbler, it is of course possible to lock the door from
either side. In the same manner the other method as explained in the second
example, can be performed by attaching the closing devices to the leaves of the
folding doors, and in arranging the bevelled surfaces of the door posts.
In carrying out this invention, parts of the arrangements before mentioned may
be interchanged or varied and the invention may be applied to various arrangements
of door closings of the character indicated.
Having now particularly described and ascertained the nature of this said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is: --
1. A door lock characterized by a door post capable of being turned and con-
sisting of two halves or parts D and D' which are hinged together, said door post
being arranged in a curved recess in such a way that it can be moved round the
front edges of the shut door or removed from the same by means of a rack H
which can be fixed and moved by the handle F and cog wheel F¹ substantially as
described and illustrated in Figures 1 to 3 of the accompanying drawings.
2. A modified form of the lock claimed under Claim
post D which can be moved and fixed by means of a handle and gear, is provided
with a ledge D³, the edge of which is bevelled and presses against the similarly
bevelled edge of the door, when post and door are shut, substantially as described
and illustrated in Figures 4 to 6 of the accompanying drawings.
hereof wherein the
3. The herein-described improvements in door mountings constructed and
operated substantially in the manner and for the purposes set forth and illustrated
in the accompanying drawings.
Dated this 22nd dow of M. 1904