Improvements in Door Springs.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in Door Springs.
We EDWIN VERITY of 42 Swinegate Leeds Ironmonger and BENJAMIN BANKS
of Lees Yard Meadow Lane Leeds Brass Finisher both in the County of York
do hereby declare the nature of this invention to be as follows:-
Our improvements are applicable to what are known as floor springs which are
applied to heel of doors, the top of door being supported by the ordinary pivot.
We first construct an iron rectangular box of the desired depth and size for
containing the working parts, and at one ead we construct a vertical spindle, the
lower end working in a socket, or cup, on the bottom of the box the upper part
working in a collar that is divided in two parts which are screwed onto suitable
flanges on the side of the box. The top of this vertical spindle is formed into a
rectangular and tapered shape the rectangular shape is further hollowed out on its
2 longest sides so that when fitted to the shoe or strap that is attached to the heel
of door it prevents the shoe from working loose by continuous use and the tapered
form holds the shoe firm on the spindle. To this upright spindle is formed a pair
of jaws between which works a roller so that when the door is opened outward or
inwards it opperates respectively 2 levers that are connected on their opposite ends
by one or more spiral or other suitable form of spring. These levers are fixed or have
their centres pivotel on a moveable bearing which may be regulated by a screw
for the purpose of adjusting the door after the spring is fixed.
The top of the rectangular box is covered by a plate of suitable thickness and
material in the usual way. It will be obvious that the rectangular form of top of
spindle, the split collar plate, and moveable regulator, can be applied to existing
floor spring.
Dated this 25th day of October 1895.
EDWIN VERITY.
BENJAMIN BANKS.
Improvements in Doo Spring
We, EDWIN VERITY of 42 Swinegate, Ironmonger, and BENJAMIN BANKS, of
Lees Yard, Meadow Lane, Brass Finisher, both of Leeds, in the County of York,
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 :--
Our invention relates to what are known as door springs, which are employed at
the heels of swing doors and which tend to keep the said doors in the central
position, and in order that our invention may be clearly understood we will proceed
to describe same with reference to the accompanying drawing, in which similar
letters refer to like parts in all the figures.
Fig. 1 is a sectional side elevation of an apparatus construoted according to

page_text: our invention, and Fig. 2 is a sectional plan of same.
views.
Figs. 3, 4 and 5 are detail
According to our invention, A is a rectangular box which contains the working
parts of the apparatus, and the said box A is set in concrete or other firm material
at the base of the door to which the spring is to be applied. B is a spindle, the
lower end of which works in a cup C situated in the box A, and the said spindle B
is kept vertical by means of a divided collar made up of plates D and E. F is the
head of the spindle B, the said head F being of elongated rectangular form.
G is the shoe of the door, and H is a slot for the reception of the head F. J is an
arm which is situated on the spindle B, and a roller K is provided on the said
arm J on which it can rotate freely. L is a lever having arms M and N on one
of its sides, which are curved to such a shape that the partial rotation of the
spindle B causes the roller K to actuate the said lever L, and the opposite end
of the lever L is composed of a pair of arms P which carry a bucket R by means
of trunnions R'. Within the bucket R we provide a spiral spring S, the upper
end of which rests against a cover S'. There is a space O situated between the
arms M and N, in which space the roller stands when the door is in the closed
position. T is a bracket which supports the lever L through the medium of the
adjustable centre pin V, and the ends of the pin V rest in recesses X and Y
situated in the interior of the box.
The force of the spring S tends to keep the lever L with its arms M and N in
the up position, and when the door is at rest in the closed position, the force of the
said spring S keeps the roller K in the recess O. When the door is opened the
roller K is forced along one of the inclined arms M and N, which latter becoming
depressed turns the lever L on its fulcrum, thus compressing the spring S. On
the release of the door, the spring forces the lever into a horizontal position at the
same time causing the curved arm to bring the roller K back to its central
position in the space O where it is firmly held, thereby keeping the shoe G in the
centre and holding the door closed.
The construction of the plates D and E may be clearly seen at Figs. 3 and 4,
and it will be readily seen that by separating the plates D and E, a spindle having
a head larger than the collar may be inserted in the said collar, the plates being
connected by means of screws on receiving the said spindle. In the same fig. it
will be seen that the head F besides being elongated, is also of a slightly tapered
form, which causes it to bite firmly in the shoe G, and if desired the longest sides
of the head F may be hollowed out as shewn, so as to cause the ends only of the
head F to bite in the slot II of the shoe G.
It often occurs with door springs at present in use, that the parts wear in such a
manner that the door is held partially open when at rest, and the only means of
rectifying this is by re-setting the box A, which is a long and costly operation.
In the arrangement shewn at Fig. 5, the bracket T which supports the lever L
is shown to be adjustable, as by turning the centre pin V the said bracket may be
moved to the right or left as required, thus enabling the space O to be brought
into the required position for adjusting the door to the right or left. The top of
the box A may be covered by a suitable plate.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
--
1. The divided collar, whereby a spindle having a head of larger size than the
interior of the said collar may be employed, substantially as set forth.
2. The adjustable bracket T, whereby the lever L may be adjusted in position
for the purpose of correcting the position of rest of the door, substantially as set
forth.
3. The combination of the box A, spindle B, cup C, plates D and E, head F,
arm J, roller K, lever L with its arms M, N, and P, bucket R, spring S, and
cover S, substantially as and for the purposes set forth.

page_text: 4. The general arrangement, construction, and combination of the various parts
forming the door spring, substantially as set forth, together with any mere
modification or modifications thereof.
Dalth dow of T... 1906
BREWER & SON,
London and Leeds, Agents for the Applicants.
BREWER & SON,
London and Leeds, Agents for the Applicants.