Improvements in the Means of Adjusting Swing Mirrors, Windows, and similar Appliances.
Year: 1890

page_text: Date of Application, 22nd Dec., 1890
Complete Specification Left, 22nd Sept., 1891-Accepted, 24th Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Means of Adjusting Swing Mirrors, Windows,
and similar Appliances.
I, SAMUEL HILL, of 260 New John Street West, Birmingham in the County
of Warwick, Cabinet Bar Fitter, do hereby declare the nature of this invention
to be as follows:-
My invention relates to improvements in the contrivances for adjusting swing
mirrors and similar articles and its object is to produce a simpler and more reliable
centre bearing or pivoting contrivance which while allowing sufficient freedom to
change the position of the mirror or other appliance by hand yet firmly holds the
mirror in whatever position it may be left. The improved appliance consists of a
circular box or case which is screwed to the pillar and it has rotating freely within
it a disc or plate carrying a plate with screw holes. This plate is attached to the
mirror by screws or otherwise and the plate which rotates within the circular box
or case is riveted to it by a rivet which is sufficiently loose to allow of free
rotation.
The plate has pieces projecting from its surface and a steel spring ring is slipped
over these pieces, the ring being cut or divided preferably at one place where a pin
attached to the rotating plate is inserted so that the spring is moved round by the
pin when the mirror is changed in position. The spring ring is bent so as to have
a considerable tendency to expand outwards and sufficient friction is caused between
its external surface and the internal surface of the circular box or case to afford
some resistance to movement. The tendency of the pin pressing upon one of the
cut ends of the ring is also to wedge the ring and cause greater friction so that
there is a considerable resistance to movement at first which diminishes when the
mirror is once in motion. This secures a reliable hold on the mirror or other
appliance to which my swivelling contrivance is attached while at rest and permits
of sufficiently easy movement by hand. Sometimes I cause a projection formed
upon the plate rotating within the circular box or case to form the rivet or
pivot by passing it through the case and riveting or securing otherwise on the
exterior.
One essential feature of my invention consists of the spring ring or spring
segments expanding or pressing against the sides of the circular case or box and so
long as this feature is maintained I may modify the configuration of the other
parts; I may attach the circular case to the mirror for example and the plates to
the pillars or vary the attachment in other obvious modifications.
Dated this 20th day of December 1890.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for Applicant..
COMPLETE SPECIFICATION.
Improvements in the Means of Adjusting Swing Mirrors, Windows,
and similar Appliances.
•
I, SAMUEL HILL, of 260 New John Street West, Birmingham, in the County
of Warwick, Cabinet Bar Fitter, 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 :-
My invention relates to improvements in the contrivances for adjusting swing

page_text: mirrors and similar articles and its object is to produce a simpler and more reliable
centre bearing or pivoting contrivance which while allowing sufficient freedom to
change the position of the mirror or other appliance by hand, yet firmly holds the
mirror in whatever position it may be left.
Referring to the accompanying sheet of drawings; the improved appliance
consists of a circular box or case which is screwed to the pillar, and it has rotating
'freely within it a disc or plate carrying a plate with screw holes. The device and
its details are shown at Figures 1 to 9 inclusive, and Figure 10 is a back view of
a mirror to which it is applied. The circular box or case A (Figure 1) is screwed
to the pillar by aid of the screw holes C, C, and there lies within it a steel or
other spring C, shown separately at Figure 6; a plate D checks into the recesses
shown in the said spring by projections E, E, and the plate D rotates within A
on the pin or rivet F. The plate D carries with it the plate B, which plate B
is attached by screws or otherwise to the mirror. The rivet or pin F is riveted
sufficiently loosely to allow of free rotation of the plate D. The plate D by the
pieces or projections E, E' carries round the cut spring C, the cut allowing the
said spring ring to expand outwards and sufficient friction is caused between its
external surface and the internal surface of the circular box or case to afford the
necessary resistance to movement.
Sometimes a pin or projection from the plate D is caused to press upon one of
the ends of the ring to turn it round and this pressure upon the cut end tends to
wedge the ring and cause greater friction, so that there is a considerable resistance
to movement at first which diminishes when the mirror is once in motion. This
secures a reliable hold on the mirror or other appliance to which my swivelling
contrivance is attached while at rest, and permits of sufficiently easy movement¯
by hand.
In the drawings have shown the expanding steel-or-other-spring-C-as-moved
by projections aforesaid fitting into recesses, and this modification-1-find-very-
suitable and easily applied, care being taken that the spring ring is so made as to
have sufficient expansion power..
In Figure the spring is shown";
Figure 2 is an external view;
:
:
Figures 3, 4, and 5 show the plate D carrying B, in elevation, edge-view,
and plan;
Figures 7, 8, and 9 show the circular box or case A separately.
Sometimes I cause a projection formed upon the plate rotating within the circular
box or case, to form the rivet or pivot by passing it through the case and riveting
or securing otherwise on the exterior of A.
may
One essential feature of my invention consists of the spring ring or spring
segments expanding against the sides of the circular case or box, and so long.as
this feature is maintained I may modify the configuration of the other parts;
attach the circular case A. to the mirror for example, and the plates to the pillars,
or vary the attachment in other obvious modifications. Without further illus-
tration it will be readily understood that spring segments may be cut from C
(Figure 6) and used for the same purpose.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
(1)-A centre bearing or pivoting contrivance for swing mirrors and similar
appliances, in which an expanding steel or other ring supplies the friction required
to hold the mirror in position, substantially as hereinbefore described and illustrated
in the accompanying drawings.
(2) A centre bearing or pivoting contrivance for swing mirrors, in which
expanding segment springs are used to obtain friction substantially as and for the
purposes herein before described.

page_text: (3) The centre bearing or pivoting contrivance consisting of a circular case,
expanding rotating spring and rotating plate substantially as hereinbefore described
and illustrated.
Dated this 21st day of September 1891.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for the Applicant.