Improvements in or connected with Springs of Swing Doors and the like.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in or connected with Springs of Swing Doors and the
like.
I, EDWIN VERITY, of Briggate, Leeds, in the County of York, Furnishing
Ironmonger, do hereby declare the nature of this invention to be as follows:-
-
The object of this invention is to construct springs for swing doors and the
like, in such a manner that the parts may be adjusted so as to correct the position
of the door in fixing or as the wearing portions become loose or worn, the said
adjustments being effected in a simple and accurate manner.
A box or frame is employed for the purpose of containing the working parts
of the spring, and the pivot for carrying the door is mounted in a step at one
end of the box, its upper end being held in position by means of a divided
collar. The pivot is provided with arms which carry a roller between their
outer ends, and two jaws which are carried on a pin in the centre of the box
have their inner surfaces bearing against the roller in such a manner that the
turning of the pivot causes the jaws to be moved according to the movements of
the door. Beyond the jaws a cross bar is provided having its two ends resting
against stops or butts on the box and one or more powerful springs which take
their bearing against the back of the box press the cross bar up to the stops on
the box.
'Distancing screws are provided between the cross bar and the backs of the
jaws, so that when the door is closed and the roller is in the central position, the
jaws may be set up to the roller and be held up to the same through the cross
piece and its springs. The screws enable the adjustment to be effected with the
door held in its true position, and should the door afterwards become slack or
untrue, the cover can then be taken off the box and the screws adjusted so as to
bring the roller to the right or left as required.
"
Improvements in or connected with springs of Swing Doors and the
like.
I, EDWIN VERITY, of Briggate, Leeds, in the County of York, Furnishing
Ironmonger, 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 chient of this invention is to construct springs for swing doors and tha

page_text: like, in such a manner that the parts may be adjusted so as to correct the position
of the door in fixing or as the wearing portions become loose or worn, the said
adjustments being effected in a simple and accurate manner.
In order that my invention may be clearly understood, I will proceed to describe
the same with reference to the accompanying drawing in which similar letters
refer to like parts in all the figures.
Figure 1 is a sectional side elevation of a spring constructed in accordance with
my invention, and Figures 2 and 3 are sectional plans of the same spring.
A is a box which contains the working parts of the spring, and a pivot B
carrying the door C is mounted in a step D at one end of the box A, its upper
end being held in position by means of a divided collar E. The pivot B is
provided with arms B' which carry a roller F between their outer ends, and two
jaws G which are hinged on a fixed pin H carried in the centre of the box A
have their inner surfaces bearing against the roller F in such a manner that
the turning of the pivot 13 causes the jaws G to be moved according to the move-
ments of the door C. Beyond the jaws G a cross bar J is provided having its
two ends resting against stops or butts A¹ on the box A, and one or more powerful
springs K which take their bearing against the back of the box A press the cross
bar Jup to the stops A'. The cross bar J is provided with distancing screws L
which project against the backs of the jaws & so as to keep the inner surfaces
of the latter up to the roller F.
In fixing the above described spring, the door C is closed so as to bring the
roller into the central position as seen at Figures 1 and 2, when the inner
surfaces of the jaws G are set up to the roller F by adjusting the screws L in
the cross bar J up against the backs of the said jaws G. It will thus be seen
that the distancing screws L enable the adjustment to be effected with the door
in its true or closed position; and should the door afterwards become slack or
untrue, the cover can be taken off the box A and the screws L adjusted up to
the jaws G so as to bring the roller F to its central position again.
Figure 3 shows the position of the various parts of the spring when the door
is swung to the left. The pivot B on moving to the left carries the roller F up
the inner face of the left jaw G forcing it outward upon its pin H, thereby com-
pressing the springs K through the medium of the left screw L and the cross
bar J, which latter turns with its opposite butt A' as its fulcrum. On the door
being released, the springs K return the parts to their normal position as seen
at Figure 2.
Should the door be swung to the right, the right hand jaw G and parts in con-
nection therewith are actuated in a similar manner to that of the left hand move
ment above described.
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 cross bar J adjustably communicating with jaws G, and kept up to
stops or butts A¹ by one or more suitable springs, substantially as and for the
purpose set forth.
2. The combination of the box A, jaws G, adjusting screws L, cross bar J,
stops or butts A¹, and springs K, substantially as and for the purposes set forth.
3. The general arrangement, construction, and combination of the various parts
forming the spring for swing doors and the like, substantially as herein set forth
and shown in the accompanying drawing.
00
BREWER & SON,
London and Leeds, Agents for the Applicant.