An Improved Combined Door-bolt and Indicator.
Year: 1890

page_text: Date of Application, 26th Sept., 1890
Complete Specification Left, 21st Jan., 189!-Accepted, 21st Feb., 1891
PROVISIONAL SPECIFICATION.
An Improved Combined Door-bolt and Indicator.
I, WORTHWORKS WALL, of 228, Lumb Lane, Bradford, in the County of York,
Tailor, do hereby declare the nature of this invention to be as follows:-
The object of this invention is to produce a combined bolt and indicator for
water closet and other doors, which shall be both inexpensive and simple of
construction.
In carrying out my invention I employ a metallic or other discoidal dial as the
means of indication, having the indicative words or symbols arranged thereon
circumferentially. A circular or other cover provided with a face, is made to
enclose the indicator disc and its relative parts. The face of the cover is obscured
excepting at one part where a space or opening is provided so as to show a portion
of the dial there through. A narrow sheet metal casing, laden with shot or other
shifting ballast, is soldered or otherwise fastened across the diameter of the dial at
the back, and over this a guide plate is attached. The bolt may be an ordinary
sliding bolt but having a long pin attached thereto said pin working in a longitudinal
slot cut through the back plate. The door is cut away to allow of the pin passing
through same and working freely, and a metal disc is attached to the other side of
the door, having a longitudinal slot, corresponding to that on the back plate of the
bolt, and in which the pin is guided. The dial has a pivotted axis, the pivots
of which take into central holes or bearings in the slotted disc and face of the
outer cover respectively. The curves of the guide plate are such that the pin in
the forward motion of the bolt causes a displacement of the ballast in its casing,
and the dial thereby losing its equilibrium, is rotated half a revolution in one
direction on its axis: vice versa, a backward movement of the bolt in like manner
produces half a revolution of the dial in the opposite direction, thus bringing
to view opposite the opening or space in the cover face a different intimation in
each case.
Instead of the foregoing arrangement the dial may be fixed and its axis working
loosely therein, be fast on the ballast case and curved guide and a shield attached
to the axis in front of the dial, in rotating, alternately obscures or brings to view
one or the other of the indicating words, the cover face in this case having two
openings or spaces.
Dated this 25th day of Santambar 1890.
CROSSLEY & Co.,
72, New Market Street, Bradford, Yorks, Agents.
COMPLETE SPECIFICATION.
An Improved Combined Door-bolt and Indicator.
I, WORTHWORKS WALL, of 228, Lumb Lane, Bradford, in the County of York,
Tailor, 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:-
The object of this invention is to produce a combined bolt and indicator, for
water-closet and other doors, which shall be both inexpensive and simple of
construction.
In carrying out my invention I employ a metallic or other discoidal dial as the
means of indication, having the indicative words or symbols arranged thereon
circumferentially. A circular or other cover, provided with a face, is made to
enclose the indicator disc and its relative parts. The face of the cover is obscured

page_text: excepting at one part where a space or opening is provided so as to show a portion
of the dial therethrough. A narrow sheet metal casing, laden with shot or other
shifting ballast, is soldered or otherwise fastened across the diameter of the dial at
the back, and over this a guide-plate is attached. The bolt may be an ordinary
sliding bolt but having a long pin attached thereto, said pin working in a longitudinal
slot cut through the back-plate. The door is cut away to allow of the pin passing
through same and working freely and a metal disc is attached to the other side of
the door, having a longitudinal slot, corresponding to that on the back-plate of the
bolt and in which the pin is guided. The dial has a pivotted axis, the pivots of
which take into central holes or bearings in the slotted disc and face of the outer
cover respectively. The curves of the guide-plate are such that the pin in the
forward motion of the bolt causes a displacement of the ballast in its casing, and
the dial thereby losing its equilibrium, is rotated half a revolution in one direction
on its axis vice versa a backward movement of the bolt in like manner produces
half a revolution of the dial in the opposite direction, thus bringing to view,
opposite the opening or space in the cover face, a different intimation in
each case..
Instead of the foregoing arrangement the dial may be fixed and its axis, working
loosely therein be fast on the ballast case and curved guide: and a shield attached
to the axis in front of the dial, in rotating, alternately obscures or brings to view
one or the other of the indicating words, the cover face in this case having two
openings or spaces.
In the drawings accompanying this Specification :--
Fig. 1 shows an indicator constructed according to my invention, and
Fig. 2 a bolt, both in elevation and attached to a door; the dotted portions in
Fig. 2 representing parts of the indicator in the position they would occupy outside
the door.
Fig. 3 is a vertical section, through the line x, x, of Fig. 2.
Figs. 4 and 5 are detail views, in back elevation, and side sectional elevation
respectively, of the dial and its attachments.
Fig. 6 Sheet 2, shows the back-plate or disc.
Fig. 7 is a front elevation of a modified form of my invention: Figs. 8 and 9
being details of same, and
Fig. 10 a side elevation of Fig. 7, partly in section.
Referring to Figs. 1 to 6-
A represents a circular dial on the front of which are the indicative words or
significations, e.g. "Engaged" and "Vacant" arranged circumferentially. B is a
cover-face adjusted over and partly obscuring the dial. A case or cover C holds
the face B in position (or the cover C and face B may be made in one piece if
desired) and the said cover C envelops the dial A and its adjuncts and is provided
with a flange by which it is made fast to the door. The dial A is caused to perform
a semi-revolution on the principle of attraction of gravitation, and I find the most
suitable method to be that indicated with reference more especially to Figs.
and 5.
D is a narrow box or casing containing shifting ballast or ballast capable of motion,
such for instance as shot, and which is attached, (preferably by solder) to the back
of the dial in a vertical position with reference to the letters thereon. E is a guide-
plate, attached in like manner to the casing D, the contour of whose guiding curves.
somewhat resembles an egg-timer. F, F1 are two pins fixed centrally, the former
on the face of the dial and the latter on the guide-plate E and exactly opposite each
other, forming the axis on which the dial is caused to rotate half a revolution
reciprocally. The axis F, F¹, is centred loosely in the face B and in a back-plate
or disc G (see Figs. 3 and 6). The bolt H is of ordinary construction except that
a slot h, shown in Fig. 3 and dotted in Fig. 2, is cut through the bolt-plate and in
which a pin H', attached to and forming a continuation of the knob, moves longi-
tudinally backwards and forwards. The pin H' may be screw threaded, as shown,
and the bolt be provided with a correspondingly threaded sleeve h* for its reception.
A corresponding horizontal slot to that in the back-plate of the bolt is cut through

page_text: the door, as seen in Fig. 3, so as to allow the pin H' free longitudinal movement
when the bolt is shot or drawn back. The disc G, which is attached to the door
on the outside, has also a guiding slot g, Figs. 3 and 6 adjusted in position opposite
the slot h, so as to guide the pin H which, in its backward and forward motion,
strikes against the curved outline of the plate E through the medium of which a
partial revolution is imparted to the casing D and dial A: the centre of gravity of
the shot in the casing D being thereby displaced the shot immediately falls to the
opposite end of the casing and bringing that end downwards by its weight reverses
the relative position of the casing and dial and maintains it in that state until
returned by a reverse longitudinal movement of the bolt. If a portion of the
obscuring face B be open or cut away, say part of the upper circumference as in
Fig. 1, then (as the dial only makes half a revolution at one movement of the bolt
to the right or left) the wording may be so arranged on the dial as to show
Engaged" on the bolt being shot and "Vacant on its withdrawal.
66
In the foregoing example the obscuring face has only one opening but it may, by
modifying the apparatus have two or more openings, if desired. In Figs. 7, 8,
9 and 10 is shown an indicator having two openings in the face. In this instance it
will be necessary to have the words arranged on the dial as shown in Fig. 7 and a
mask (of sheet metal for instance) partly obscuring the face but having an opening
therein so as to bring to view only one of the words at a time, K represents such a
mask shown in Figs. 7, 8 and 10, while Fig. 9 shows the face B. In this modified
form of my invention the dial A and face B are both fixed in the cover C, the
mask K being fastened on the front pivot or axis F. The axis F, F, works loosely
in the back-plate or disc G and the dial A, and is attached to the guide-plate É
and casing D respectively.
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. The combination of the parts forming my improved combined door-bolt and
indicator, substantially as described and shown on the drawings.
2. In an indicator for doors and the like the peculiar apparatus consisting essen-
tially of the ballast laden casing D and the guiding-plate E both attached to the
dial or not and moving on the axis F, F', shown more particularly in Figs. 4 and 5,
substantially as set forth or any mere modification of same.
3. The arrangement of the parts, seen best in Fig. 10, for actuating the mask K
in lieu of a moving dial substantially as described and shown.
Dated this 20th day of January 1901
CROSSLEY & Co.,
72, New Market Street, Bradford, Yorks, Agents.