IMPROVEMENTS IN JOINTS OR APPARATUS FOR SUSPENDING OR SUPPORTING SWING LOOKING GLASSES, LETTERS PAT SUPINGKING GSES, FAN LIGHTS OR VENTILATORS AND OTHER ARTICLES; AND IN CONNECTING OB ATTACHING SUCH JOINTS OR APPARATUS TO THEIR PILLARS OR SUPPORTS FOR " PROVISIONAL SPECIFICATION
Year: 1882

page_text: LETTERS PATENT to George Crofts of Birmingham in the County of
Warwick Manufacturer and George Frederick Assinder also of Birmingham
aforesaid Manufacturer for an Invention of "IMPROVEMENTS IN JOINTS OR
APPARATUS FOR SUSPENDING OR SUPPORTING SWING LOOKING GLASSES,
LETTERS PATENT to George Crofts of Birmingham in the County of
Warwick Manufacturer and George Frederick Assinder also of Birmingham
aforesaid Manufacturer for an Invention of "IMPROVEMENTS IN JOINTS OR
APPARATUS
SUSPENDING OR SUPPORTING SWING LOOKING GLASSES,
FAN LIGHTS OR VENTILATORS AND OTHER ARTICLES; AND IN CONNECTING OB
ATTACHING SUCH JOINTS OR APPARATUS TO THEIR PILLARS OR SUPPORTS
FOR
"
PROVISIONAL SPECIFICATION left by the said George Crofts and George
Frederick Assinder at the Office of the Commissioners of Patents on the
5th December 1882.
GEORGE CROFTS of Birmingham in the County of Warwick Manufacturer
and GEORGE FREDERICK ASSINDER also of Birmingham aforesaid Manufacturer
"IMPROVEMENTS IN JOINTS OR APPARATUS FOR SUSPENDING OR SUPPORTING
SWING LOOKING GLASSES, FAN LIGHTS OR VENTILATORS AND OTHER ARTICLES ;
AND IN CONNECTING OR ATTACHING SUCH JOINTS OR APPARATUS, TO THEIR
PILLARS OR SUPPORTS
"
Our Invention consists of the improvements hereinafter described in joints or
apparatus, (commonly called movements) for suspending or supporting swing
looking glasses, fan lights or ventilators and other articles; such for example as
banner screen arms.
Also in connecting or attaching such joints or movements to their pillars or
frames.
By our improvements the construction of the joints or movements upon which
the articles enumerated turn, are much simplified and the production of a stiff or
tight joint, the swing looking glass or other article suspended is fixed or rests in
any position to which it has been brought; the said swing looking glasses and
other articles are also attached or connected to their pillars or supports in a simple
and efficient manner.
We will describe our invention as applied to a swing looking glass, and as the

page_text: two joints or movements on which the glass turns are alike, we will only describe
one of the aforesaid joints and their connections.
According to our invention the swing looking glass movement has a central axis
or pivot formed cylindrical about its middle, and upon this cylindrical or round
part a plate or bracket (affixed by screws to the looking glass frame) turns or
rotates thereon, the plate or bracket just described bears or abutts against a collar
made in front of the rounded part on the pivot or axis as described.
A circular thick metal disc with a square hole formed in its axial part, takes
upon a square part of the pivot or axis, A suitably sized cap with a square axial
hole is threaded on the said square part of the pivot or axis. Between the disc
and sunken inside part of the cap a flat or other suitable spring is placed; the
attachment plate disc, spring and cap described are connected together by rivetting
the end of the square end of the axis described, or the said square end of the axis
may be wormed and a screw nut screwed thereon, which may be tightened as
desired on wearing of the parts by frictional contact.
The other or collar end of the axis has a he dovetail affixed or connected rigidly
thereto; this he dovetail takes into a she dovetail bracket or plate (that is to say
a taper undercut depression) affixed by screws to the pillar or support of the swing
looking glass frame; so that on the movement of the looking glass frame, the plate
attached or connected to the frame of the glass moves or revolves around the axis,
while the said axis carrying the disc spring and cap remain stationary, the spring
at the same time presses forcibly outwards the disc against the inner face of the
moving plate affixed to the glass frame, thereby producing a stiff or tight joint and
the swing looking glass is retained in any desired position to which it may have
been brought or adjusted. There is thereby produced a looking glass movement
both simple in its construction and efficient in its action.
The means described of attaching swing looking glasses to, and disconnecting
them from their pillars or supports, are not only applicable to joints or movements
as described, but are equally applicable to the joints or movements of swing looking
glasses generally.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Crofts and George Frederick Asainder in the Great Seal
Patent Office on the 5th June 1883.
GEORGE CROFTS of Birmingham in the County of Warwick Manufacturer
and GEORGE FREDERICK ASSINDER also of Birmingham aforesaid Manufacturer
IMPROVEMENTS IN JOINTS OR APPARATUS FOR BUSPENDING OR SUPPORTING
SWING LOOKING GLASSES FAN LIGHTS OR VENTILATORS AND OTHER ARTICLES ;
AND IN CONNECTING OR ATTACHING SUCH JOINTS OR APPARATUS TO THEIR
PILLARS OR SUPPORTS
Our invention consists of the improvements hereinafter described in joints or
apparatuses (commonly called movements) for suspending or supporting swing-
looking-glasses, fanlights or ventilators and other articles, such for example as
banner screen arms. Also in connecting or attaching such joints or movements to
their pillars or supports.
By our improvements the construction of the joints or movements upon which
the articles enumerated turn, are much simplified in their construction and the
production of a stiff or tight joint, the swing-looking-glass, or other article
suspended is fixed or rests in any position to which it has been brought. The said
swing-looking-glass and other articles are also attached or connected to their pillars
or supports in a simple and efficient manner
We will describe our Invention as applied to a swing-looking-glass and as the
two joints or movements on which the glass turns are of like construction, we will
only describe one of the aforesaid joints and its connections
According to our invention, the looking-glass movement has a central axis or
pivot formed cylindrical about its middle; and upon this cylindrical or round part,
a plate or bracket affixed by screws to the looking glass frame turns or rotates
thereon; the plate or bracket just described bears or abuts against a collar made
in front of the rounded part on the pivot or axis as described
A circular disc with a square hole formed in its middle takes upon a square part
of the pivot or axis-A suitably sized cap with a square axial hole is threaded
upon the said square part of the pivot or axis-Between the disc and sunken inside
part of the cap a flat or other suitable spring is placed-The attachment plate, disc,
spring and cap described are connected together by rivetting the end of the square
part of the axis described or the said end of the axis may be wormed, and a screw
nut screwed thereon, which may be tightened as desired on wearing of the parts
by frictional contact.
The other or collar end of the axis has a he dovetail affixed or connected rigidly
thereto, this be dovetail takes into a she dovetail bracket or plate (that is to say &
taper undercut depression) affixed by screws to the pillar or support so that on the
movement of the looking-glass the plate attached to the frame of the said glass
moves or rotates around the axis, while the said axis carrying the disc spring and
cap remain stationary, the spring at the same time presses forcibly outwards the
disc against the inner face of the moving plate affixed to the frame of the glass,
thereby producing a stiff or tight joint, and the looking glass is retained in any
desired position to which it may have been brought or adjusted. There is thereby
produced a looking glass movement both simple in its construction and efficient in
its action

page_text: The means described of attaching swing looking glasses to and disconnecting
them from their pillars or supports are not only applicable to joints or movements
as described but are equally applicable to the joints or movements of swing looking
glasses generally
I will now proceed to describe with reference to the accompanying drawings the
manner in which my Invention may be performed. The same letters of reference
(Sheet 1.) indicate the same parts in the several figures of the drawing.
Figure 1. represents in side elevation a swing-looking-glass joint or movement
attached or connected to a looking glass frame and supported by the dovetail
bracket affixed to the pillar of the glass or mirror-Figure 2 represents the joint
or movement in front elevation (with the frame partly in section) detached from
the bracket on the pillar.. Figure 3- represents a complete longitudinal vertical
section of figure 1-Figure 4. shows a plan of figure 1. with the pillar and frame
of the looking-glass removed-Figure 5. represents the he dovetail joint of the
glass movement-Figure 6. shows a front view of the she dovetail socket or
bracket for supporting the swing looking glass and its joint or movement-
Figure 7. represents detached parts of the joint or movement partly in section and
partly in elevation-Figure 8 is a front view of the central pivot or axis shown in
elevation in figure 7. with the dovetail attached to one end of the said axis
The other figures 9. 10. and 11. represent means of connecting or holding the he
dovetail end to the dovetail bracket in order to prevent the looking glass from
being accidentally detached from the pillar or support.
A is the he dovetail taking into a she or undercut dovetail bracket B. A² is a
stationary central axis or pivot upon which the swing looking glass turns-The
flat plate C. which is attached by screws to the frame D. of the looking-glass, turns
or rotates freely upon a contracted cylindrical part A³, of the central axis or
pivot A. At the back of the said frame plate a circular disc E, with a square
hole in its middle takes upon a square part A of the said central axis and thereby
preventing the disc rotating-A cap or box F with a square hole in it's middle
also takes upon a further square part of the said axis. The terminal end A³ is
wormed and upon the wormed end a nut G screws thereon for tightening or
drawing the parts together threaded upon the central axis-The flat spring L. is
disposed between the disc E, and the inside face of the cap F. by screwing up the
nut a greater or less amount of resistance by the abrasion faces can be offered to
the movement or rotation of the swing glass as hereinafter described
In order to connect the swing looking glass D. to the pillar H. Figure 2. it is
only necessary to pass or slip, the narrow end of the dovetail A into the she
dovetail in the bracket B. and in virtue of the weight of the looking glass D. the
parts are securely connected together as represented in elevation in figure 1. The
action of the joint or glass movement attached to the looking glass frame is as
follows
The axis A of the dovetail A. being incapable of rotation, the dovetail being
held firmly in the bracket on the pillar-The frame plate C. and the glass with it
is capable of rotating upon the round A³ of the axis A, so that on the movement
of the looking-glass frame D. the frame plate C. turns with the glass; the necessary
tightness or stiffness is effected between the moving parts, by the flat spring L
enclosed within the cap F the said spring pressing or expanding its edges in virtue
of it's elasticity forcibly against the washer E. the dome part of the spring taking
it's abutment from the inside face of the cap F. There is thus produced a stiff or
tight joint or movement both simple in its construction and efficient in it's action
The parts are but little liable to wear in consequence of the axis or pivot and
the principal parts carried by it remaining stationary-The desired amount of
tension can from time to time be put upon the spring to effect the necessary
abrasion between the faces of the disc E. and frame plate C. by the screw nut G.
Instead of a flat, a coiled spring may be employed

page_text: In order to prevent the accidental detachment from its pillars or supports the
dovetail A. may be fastened or locked to the bracket B. by a spring catch fastening
as represented in figure 9. where I. is the catch and I. a tooth, taking or snapping
into a hole B. in the bracket B; the liberation of the catch fastening is effected
by drawing the tooth from the hole in the bracket by the free end of the catch
fastening and then withdrawing the dovetail from the said bracket
Figure 10 represents another modification for holding the dovetail in its bracket
this is effected by a jointed swing button or catch K. which only requires to be
turned aside into the position represented in dotted lines when the dovetail A can
be withdrawn from or replaced into the bracket B. and when the said catch is
liberated it's tail end K'. falls vertically by it's own weight-In figure 11. the
dovetail is retained in the bracket by the terminal end of the spring L. pressing
upon the top edge of the dovetail fastening A. the said spring being rivetted to the
bracket B.
Figure 12. represents the joint or movement described applied to a fan-light, in
this arrangement there is no detachable dovetail connection-A plate M. affixed to
the main axis A. is attached to the inside frame or jamb of the fanlight as
represented partly in section in figure 12. In figure 13 the joint is shown partly
in longitudinal vertical section-When it is desired that the fan-light should be.
detachable from its frame a sunken plate marked N. with a bayonet opening N³.
through which a dovetail A figure 16 passes and seats itself in the recess N³, of the
opening N*.
A fanlight fitted with the joints described can be retained open, in any desired
position
Figure 16. shows the joint herein before described applied to a banner-screen arm
for the purpose of producing a stiff or tight joint in order that the arms and
banner carried by them, may rest in any desired position to which they may have
been brought or adjusted
0, 0, are fixed knuckles and P. is a swing joint to which the arms R. R². are
connected, the said joint rotates upon the round of a fixed pin or axis, passing
through the knuckles O, O, a flat spring S. presses forcibly the square eyed
washers T, T, against the faces P2 P³ of the joint P. and thereby producing
abrasion between the moving faces of the joint and the faces of the fixed
washers T. T. the degree of tension of the spring is effected, by screwing up the
nut on the end of the axis.
Having described the nature of my said invention and the manner in which the
same is to be performed I wish it to be understood that I claim as my Invention
First. The arrangement or combination of the fixed or non-rotating-axis or
pivot A. and the disc spring cap and nut combined, and remaining stationary
with the said axis, while the plate C. and swing looking glass carried by it,
rotates or moves about the said fixed axis and working substantially in the way,
and for the purposes described and illustrated in figures 1. 2. 3. 4. 5. 6. 7. and 8.
of the accompanying drawings
Secondly. The combination of a dovetail on the end of a non-rotating axis
taking into a corresponding dovetail in a bracket, affixed to the pillar or support
of the glass as represented in figures 1. to 8 both inclusive of the accompanying
drawings; also the means of locking the said dovetail in it's seat to prevent it's
accidental detachment substantially as described and illustrated in figures 9. 10.
and 11. of the drawings.
Thirdly. Affixing fanlights or ventilators as represented in figures 12. 13. 14.
and 15. of the drawings in any desired open position by a stiff or tight joint
substantially as described and set forth.
Fourthly. Placing between the fixed and moveable knuckles of Banner-Screen
Arms flat or other suitable springs for retaining the said arms and screen carried
by them in any position to which they may have been brought or adjusted; also

page_text: giving the necessary degree of stiffness to the joint or joints by the screw nut on
the end of the axis substantially as described and illustrated in figures 16. 17.
and 18. of the accompanying drawings.
In witness whereof I the said George Frederick Assinder have hereunto set
my hand and seal this twenty-ninth day of May in the year of our Lord
one thousand eight hundred and eighty three.
Witness.
HENRY SKERRETT
Patent Agent
6 Livery Street
Birmingham
GEORGE FREDERICK ASSINDER (L.B.)