Improvements in Swing Joints or Pivots for Mirrors, Windows, Ventilators, and other like Swinging Articles.
Year: 1895

page_text: Date of Application, 3rd Aug., 1895-Accepted, 7th Sept., 1895
Improvements in Swing Joints or Pivots for Mirrors, Windows,
Ventilators, and other like Swinging Articles.
I, SAMUEL TIMINGS, of 23, Great Hampton Street, in the City of Birmingham,
Brassfounder, 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 :-
This invention consists of the hereindescribed improvements in swing joints or
pivots for mirrors, windows, ventilators, and other like swinging articles. By my
invention 1 simplify the construction of the said swing joints and I so arrange them
that they cannot get out of order and so that the mirror or swinging part cannot
accidentally become detached from the stand which carries the same.
I will describe my invention as applied to a swinging mirror and I will refer to
the accompanying drawings on which
Fig. 1 is a side elevation of a swing joint constructed according to my invention
applied to a swinging mirror;
Fig. 2 shews the two parts of the pivot or movement separately;
Fig. 3 is a front view of the part of the pivot or movement to which my
invention is applied and which is fixed to the mirror frame; Fig. 4 is a longitudinal
sectional view of the same;
Fig. 5 is a front view of the usual taper socket like part which is fixed to the
pillar of the mirror;
Fig. 6 is the plate of the movement and
Figs. 7, 8 and 9 shew parts of my invention separately;
Fig. 10 shews how I construct the slot in the socket part of the movement to
prevent the mirror being accidentally detached from the stand and
Fig. 11 is a front and side view of the pivot or movement constructed to engage
with the socket shewn by Fig. 10.
The same letters of reference indicate the same parts in all the figures.
In carrying out this invention the joint pin A which turns in the side plate B
has threaded upon its stem a dished washer C immediately beneath the head a' of
the pin A, this washer C enclosing the dished spring E which bears against the
face of the fixing plate B. The pin A when thieaded through the washer C and
spring E as aforesaid is threaded through the usual hole b' in the plate B and is
rivetted over on the washer g (see Fig. 4) at the back of the side plate B so as to
grip the dished washer C and spring E tightly between the head a' and the face of
the plate B, thus causing sufficient friction between these parts as to cause the
pin A to turn stiffly in its bearing and thus retain the mirror in any angular
position in which it may be placed. It is to be understood that the head a' of the
pin A is of the usual taper shape (see Figs. 3 and 9) fits as usual in the taper
slot in the stationary side plate F which is fixed to the upright H of the mirror
stand..
When the head a¹ and the slot f are made of the usual vertical taper form
shewn by Figs. 3, 5 and 9 of my drawings, it follows that if the mirror is lifted it
will become detached from the stand and the latter might fall and be damaged
thereby. According to the second part of this invention I overcome this defect
by making the head a' of the pin A curved as shewn by Fig. 11 where it will be
seen that the head a' rises at the centre and bends down at the two sides, and the
slotthewn in Fig. 10 I make of a corresponding curved shape entering the boss

page_text: or raised part of the fixing plate F at one side of the same where the slot f is
open at It will be seen that in order to connect the mirror to its stand the
mirror must first be turned into a horizontal or slightly inclined position so that the
smaller side a² of the head a' will enter the slot at the opening f' and then as
the mirror is turned to its upright position the curved bead a' will move to the
end of the curved slot and thus the mirror will be connected to its stand. As
the mirror cannot be disconnected without first turning the same into a horizontal
or slightly inclined position, it follows that so loug as the mirror is carried in a
vertical or almost vertical position it will not become accidentally detached from
its stand.
For additional security the open end of the slot may have a catch such as i
which can be turned down to prevent the head a' working out of the slot.
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. In a swing joint or pivot for mirrors, windows, ventilators and other like
swinging articles the combination of the pivot pin A inade with head a¹ to engage
in the stationary plate, the side plate such as B to which the said pivot pin is fixed
and in which the pivot pin turns, the dished washer C and the spring fitting
between the head of the pivot pin and the outside face of the plate so as to make
the pivot pin turn stiffly and cause the mirror or other article to remain at any
required angle, as hereinbefore set forth and illustrated by the accompanying
drawings.
2. In a swing joint or pivot of the kind denoted under Claim 1 for mirrors,
windows, ventilators and other like swinging articles, making the head a¹ of the
pivot pin and the slot of the side plate in which the said head fits, of the
improved curved form substantially as described and shewn by Figs. 10 and 11
and for the purpose set forth.
Dated this 2nd day of August 1895.