AN IMPROVED MOVEMENT FOR ADJUSTING THE POSITION OF SWING LOOKING GLASSES, READING DESKS, SASHES, DOORS, AND THE LIKE
Year: 1881

page_text: LETTERS PATENT to Charles Edward Bulling, of Camden Street, in the
County of Middlesex, for an Invention of "AN IMPROVED MOVEMENT FOR
ADJUSTING THE POSITION OF SWING LOOKING GLASSES, READING DESKS,
SASHES, DOORS, AND THE LIKE,”
PROVISIONAL SPECIFICATION left by the said Charles Edward Bulling
"
at the Office of the Commissioners of Patents on the 26th July 1881.
CHARLES EDWARD BULLING, of Camden Street, in the County of Middlesex.
AN IMPROVED MOVEMENT FOR ADJUSTING THE POSITION OF SWING LOOKING
GLASSES, READING DESKS, SASHES, DOORS, AND THE LIKE."
This Invention relates to the construction of a novel and simple movement for
adjusting swing looking glasses, reading desks, sashes, doors and the like at any
desired angle or position.
The improved movement suitable for a looking glass is constructed of a
cylindrical centre or pivot formed or cut with a suitable number of teeth and
fixed to the standard of the looking glass; the said toothed centre works in a
hinged bearing fitted to the looking glass, and is provided with a spring toothed
piece or catch, so placed that the said tooth is caused by its spring to take into the
teeth of the herein before described centre.
This construction of movement allows of the glass being set at any desired angle
by simply moving the glass backwards or forwards, and the glass will be kept in
the position in which it is placed by the automatic action of the hereinbefore
described spring catch taking into the teeth of the centre. To deaden the noise a
ring or band of leather or india rubber may be employed.
A movement may be placed on both sides of the glass if required.
The construction of the movement for reading desks, sashes, doors, and the like
will be substantially the same as that herein before described.

page_text: .
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Edward Bulling in the Great Seal Patent Office on the
26th January 1882.
CHARLES EDWARD BULLING, of Camden Street, in the County of Middlesex.
"AN IMPROVED MOVEMENT FOR ADJUSTING THE POSITION OF SWING LOOKING-
GLASSES, READING DESKS, SASHES, DOORS, AND THE LIKE."
This Invention relates to the construction of a novel and simple movement for
adjusting swing looking-glasses, reading desks, sashes, doors, and the like at any
desired angle or position.
The improved movement suitable for a looking glass is constructed of a
cylindrical centre or pivot formed or cut with a suitable number of teeth and
fixed to the standard of the looking glass; the said toothed centre works in a
bearing fitted to the looking glass, and is provided with a spring toothed piece or
catch, so placed that the said tooth is caused by its spring to take into the teeth
of the hereinbefore described centre; or the bearing with the spring toothed piece
may be fixed to the looking glass.
A movement may be placed on both sides of the glass if required..
The construction of the movement for reading desks, sashes, doors, and the like
will be substantially the same as that herein before described.
In order to enable my Invention to be readily understood and carried into effect, I
will proceed to describe the same by reference to the accompanying Drawing, in which
Figure 1 represents a portion of a swing looking glass frame and standard provided
with a novement constructed according to my Invention; Figures 2, 3, and 4 are
detached detailed views; Figure 5 is a view of the corresponding portion of the
standard and frame of the looking glass opposite to that represented in Figure 1,
shewing a suitable arrangement for centering that side of the frame when only one
side of the glass is provided with my improved movement; Figures 6 and 7,
details; Figure 8 is a front view shewing the Invention applied to a hinge
suitable for a door, or for a reading desk; Figure 9, section on line A, B, of
Figure 8; Figures 10 and 11, perspective views shewing the Invention arranged
to serve as a swing centre for doors and the like; Figure 12, elevation partly in
section shewing the Invention applied to the sliding sash of a railway carriage or
similar door; Figure 13 shews the Invention adapted to a casement sash.
Similar letters in all the Figures represent similar or corresponding parts.
I will first describe iny Invention by reference to Figures 1, 2, 3, and 4.
a is the cylindrical centre or pivot formed or cut with teeth on its periphery as
shewn; the said centre a is fixed or formed on a plate b screwed to one of the
standards c of the looking glass frame d; e is the toothed piece or catch working
in a cylinder f on a plate g screwed to the frame d of the glass; h is a spring ou
the catch e for keeping the said catch in the teeth of the pivot or centre aį
Figure 2 is a detached view of the spring catch on its plate; the reduced portion
(shewn in dotted lines, Figure 1) of the pivot a works in the hole or bearing j in
the plate g;, bearing plate on the pivot a, the said plate being slotted at 1, as
shewn in the detached view at Figure 3, to allow of the frame being adjusted to
the standard by bringing the frame at right angles thereto, as shewn in the
separate view at Figure 44, in which position the slot will pass over the catch e,
and allow the catch to take into the teeth of the pivot a. A similar movement to
that hereinbefore described may be applied to the opposite standard c¹, and side d',
of the frame of the glass when required, but if only one movement be employed
the parts c and d of the glass may be provided with any suitable pivot, the
arrangement shewn in Figures 5, 6, and 7 being one which I have found to answer
well in practice, and which will be understood without further description, and to
which I make no claim.

page_text: From this construction of movement it will be understood that the looking glass
may be set at any desired angle by simply moving the glass backwards or
forwards, sufficient force being employed to overcome the pressure of the spring h
80 as to cause the catch e to move over the teeth of the pivot a, and the glass will
be kept in the position in which it is placed by the automatic action of the herein-
before described spring catch e, taking into the teeth of the centre a; to deaden
the noise a ring or band of leather or india rubber (not shewn in the Drawing)
may be placed on the teeth of the pivot a.
A movement of this construction is also applicable for swing sashes and
the like.
In applying my Invention to a hinge suitable for a door or reading desk, as
shewn in Figures 8 and 9, the spring catch e is applied to one half m of the hinge,
and works, as shewn, in the teeth on the other half n of the hinge, the action
being substantially the same as that hereinbefore described.
In the swing centre, shewn in Figures 10 and 11, the toothed pivot a is adapted
to the plate 6 let into the floor, and the spring catch e to the plate 9 screwed into
the bottom of the door; Figure 11 shews the centre closed, and Figure 10 shews
it opened at right angles.
In applying my Invention to the sliding sash of a railway carriage or like door
(or to other sliding sashes) the slots for receiving the catch e are cut in a
plate a fixed to the side (or to both sides) of the sash o, and the spring catch e is
fixed, as shewn in the side rail (or rails) of the door (or other) frame; to assist the
sliding of the sash, rollers (shewn in dotted lines) may be employed.
By this arrangement the sash may be moved up or down and will be kept in
any position in which the catch e will take into one of the slots of the plate a.
For casement sashes, as shewn in Figure 13, I employ a slotted or toothed bar a
pivotted to the casement p, the spring catch e being placed in a slide q pivotted on
the plate fixed to the sill 8 of the window frame; the bar a can be moved
through the slide q so as to adjust the casement p to any desired angle.
Having thus described the nature of the said Invention, and the best means
with which I am acquainted for carrying the same into effect, I would have it
understood that I do not confine myself to the precise details herein laid down, as
it is obvious the same may be varied without departing from the peculiar character
of my Invention, but what I claim is,―
Firstly. The herein described improvements in movements for adjusting the
position of swing looking glasses, reading desks, sashes, doors, and the like, such
improvements consisting essentially in the combination with a toothed centre or
its equivalent of a spring catch, substantially as hereinbefore described and repre-
sented in the accompanying Drawing.
Secondly. The manufacture and use of the improved movement for adjusting the
position of swing looking glasses and swing sashes, constructed, arranged, and
operating substantially as herein before described and represented in Figures 1 to 4
of the accompanying Drawing.
Thirdly. The manufacture and use of the modified arrangements of the improved
movement for adjusting the position of doors, reading desks, sliding sashes of
carriage doors, and other sliding sashes, casements, and the like, substantially as
herein before described and represented in Figures 8 to 13 of the accompanying
Drawing.
In witness whereof, I, the said Charles Edward Bulling, have hereto set
my hand and seal, this Twenty sixth day of January, in the year of our
Lord One thousand eight hundred and nighter Lu
CHARLES EDWARD BULLING. (L.S.)