Slamming to of the same.
Year: 1888

page_text: Date of Application, 22nd Aug., 1888
Specification Accepted, 28th Sept., 1888
Slamming to of the same.
We, JOSEPH HENRY BEAN of Upper Mill Hill, Hardware Merchant, and WILLIAM
GAINES of Tolson Street, Sunny Bank, Manager, 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 :-
The object of our invention is to provide apparatus for closing single or double
acting doors, and to prevent slamming to of the same, and moving backwards or
forwards in closing, but silently to close and hold them in their closed position against
ordinary pressure of wind. Our invention is applied without any damage to the
framework or doors, the whole arrangement being placed in the floor.
In the accompanying drawings Fig. 1 is a longitudinal section, and Fig. 2 a plan
looking at the top, shewing our improvements.
We provide for the above purpose a box A having an ordinary cover of brass or
other material, the whole or a portion of which can be removed at pleasure. Within
this box A is fitted a spindle B, the upper end of which projects through the aforesaid
cover, and at its outer end is provided a shoe C to receive the lower corner of the door.
Within the box A is also provided and fixed a cylinder D, having a piston, piston rod
and spring therein, similar in construction to those described in our patent dated
15th May 1886 No. 6565. On the spindle B is mounted an internal cam E within
which a runner F is provided and coupled by suitable connecting rods G to the
piston rod.
On the door being opened in either direction the cam E is moved round accordingly
which draws out the piston rod through the medium of the runner F and connecting
rods G, and on the door being released, the spring within the cylinder D draws in the
piston and piston rod, at the same time pulls the connecting rods G, thereby causing
through the medium of the runner F and cam E, the aforesaid spindle B to revolve
and close the door. The ordinary atmospheric compression takes place within the
cylinder retarding the spring at the end of the stroke and thus preventing the

page_text: slamming of the door, but in order to make the cam E and piston rod work together
in closing the door we employ another runner H mounted between the connecting
rods Gas shewn and working on the outside of the cam E.
In order to fix the door in position when closed we provide the hinged horns J
which are brought in contact with the cam sides as shown by the action of a cross-
head K on the piston rod which operate on the short ends I, whereby such horns J
are retained in position and thus prevent the door from moving under ordinary pressure
of wind. Other springs M may be employed to assist in this object.
In order to prevent lateral strain on the piston rod, we provide sliding pieces or
runners N on the outer ends of the crosshead K which move with the piston rod and
work within the slides O.
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 :-
The arrangement, construction and combination of the various parts forming our
improvements in apparatus for closing doors and preventing slamming to of the same,
substantially as herein set forth.
Dated this 7th day of August 1888.
J. W. HARDING,
Agent for the Applicants.