Improvements in Door Closing Appliances.
Year: 1895

page_text: Date of Application, 25th Feb., 1895
Complete Specification Left, 25th Nov., 1895-Accepted, 11th Jan., 1896
PROVISIONAL SPECIFICATION.
Improvements in Door Closing Appliances.
We, ROWLAND HODGES of 12 Frederick Street, Brassfounder, and SAMUEL
HILL of 260 New John Street West, Cabinet Bar Fitter, both in the City of
Birmingham, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in appliances for closing swinging and
like doors, our object being to construct and arrange the spring or other automatic
closing mechanism for ready attachment to the door in such a manner as to protect
the working parts from damage and from the accumulation and dirt.
In carrying our invention into effect we preferably form our automatic door
closing mechanism by the combination of a double cam or wedge which we cause
to depress a spiral or other spring on the opening movement of the door. The
spiral or other spring with the sliding bar or like part, are mounted within a
metal or other casing or shoe which, we rigidly attach to the lower part of the
door. We provide a head upon one end of the sliding bar and mount thereon a
disc or double roller which is forced by the spring against the cams secured upon
the upper end of the fixed pivot pin within the casing or shoe.
The lower end of
the pivot pin is fixed to a foundation plate attached to the floor immediately
beneath the spring casing. On the opening movement of the door the spring is
forced back by the cams or wedges against the resistance of the spring, the disc
or roller being turned or revolved by the circular movement of the cams. Thus
with the opening of the door, the cams or wedges drives the sliding bar against
the resistance of the spring, but on the removal of the force from the door when
the same has been opened to the desired extent, the spring will re-act upon the
sliding bar and thus the cams will be turned in the opposite direction and the door.
automatically closed. We so arrange the mechanism that it shall act in both
directions and thus the door will be closed from any position from either side of
opening.
In order to provide for the adjustment of the pivot to suit the particular door
to which our improved spring may be attached we fix a lever to the pivot on the
lower side of the foundation plate, and arrange its free edges between dove-tail
or other suitable adjusting pieces. We so form the cams or wedges within the
shoe or casing, that the further movement of the door shall be checked upon its
reaching its central or closed position and thus it will be speedily brought to rest
from any position in which it may be left after opening.
We do not limit the application of our invention to any particular type or
arrangement of the door closing mechanism but make such modifications as may
be necessary to suit varying requirements.
Dated thin oond 11005
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicants.

page_text: Improvements in Door Closing Appliances.
We, ROWLAND HODGES, of 12, Frederick Street Brassfounder, and SAMUEL.
HILL, of 260, New John Street West, Cabinet Bar Fitter, both in the City of
Birmingham, 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 relates to improvements in appliances for closing swinging and
like doors, our object being to construct and arrange the spring or other automatic
closing mechanism for ready attachment to the door in such a manner as to protect
the working parts from damage and from the accumulation of dirt.
In the accompanying sheet of explanatory drawings to be hereinafter referred
to,-
Figure 1 is a front elevation, Figure 2 a section, and Figure 3 a plan,
representing one convenient arrangement of our improved door closing
Figure 4 is an inverted plan of the foundation plate showing the method of
pivot adjustment.
appliance.
The same reference letters in the different views indicate the same parts.
In carrying our invention into effect we preferably form our automatic door
closing mechanism by the combination of a cam or wedge A formed upon the
stationary pivot pin A' with the rollers B and a spring such as C all arranged
within the casing or shoe D, which we rigidly attach to the lower part of the door.
The spring C is mounted on a sliding bar E having a head E, at one end on
which we mount the discs or rollers B. The action of the spring upon the nut E
forces the rollers B against the cam A formed upon, the central portion of the
fixed pivot pin A¹. The lower end A² of the pivot pin is fixed to a foundation
plate Fattached to the floor immediately beneath the spring casing D. On the
opening movement of the door the spring C is forced back by the action of the
stationary cam or wedge A against the resistance of the spring, the discs or
rollers B being turned or revolved in their circular movement about the cams.
Thus with the opening of the door the cam or wedge drives back the sliding bar
against the resistance of the spring, but on the removal of the force from the
door when the same has been opened to the desired extent, the spring will re-act
upon the sliding bar and thus automatically close the door.
We so arrange the mechanism and the shape of the cam that the spring shall
act upon it in both directions, and thus the door will be closed from any position from
either side of opening.
In order to provide for the adjustment of the pivot to suit the particular door
to which our improved spring may be attached, we fix a lever such as G to the
pivot on the lower side of the foundation plate, as shown at Figure 4, and arrange
its free edges between dovetail or other suitable adjusting pieces H fitted between
the lugs or cheeks J formed upon the foundation plate. We so form the cam or
wedge, and the spring mechanism with the shoe or casing, that the further
movement of the door shall be checked upon its reaching its central or closed
position, and thus it will be speedily brought to rest from any position in which it
may be left after opening.
Instead of forming a cam or wedge upon the pivot pin as herein before described,
we sometimes mount a roller or rollers upon the pivot pin, and form a cam or
wedge upon the head of the sliding bar, and make other modifications to suit
particular purposes without departing from the essential features of our invention.

page_text: 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. In door closing appliances, the method of protecting the mechanism with a.
casing or shoe attached to the door, substantially as herein described.
2. In door closing appliances, the use of a casing or shoe for attachment to a.
door having its interior arranged for the reception of the closing mechanism,
substantially as herein before described, and as illustrated in the accompanying
drawings.
3. In door closing appliances, the method of adjusting the pivot by means of a.
lever and wedges beneath the foundation plate, substantially as hereinbefore
described and as illustrated in the accompanying drawings.
4. The improved general combination and arrangement of door closing
mechanism with a shoe or casing substantially as and for the purposes herein.
described.
3
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MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for the Applicants.