An Improved Means for Automatically Closing Doors.
Year: 1891

page_text: Date of Application, 16th July, 1891
Complete Specification Left, 19th Apr., 1892-Accepted, 28th May, 1892
PROVISIONAL SPECIFICATION.
An Improved Means for Automatically Closing Doors.
We FREDERICK JAQUES TREACHER of 21, Cole Street, Great Dover Street,
Borough in the County of Surrey and THOMAS JAMES LINSKILL of 66, Chatterton
Road, Finsbury Park, in the County of Middlesex Carpenters, do hereby declare
the nature of this invention to be as follows:-
The object of this invention is an improved means whereby doors are auto-
matically closed.
According to this invention we construct a metal plate of suitable form and size
which is fixed in the floor, the back edge of such plate being flush with the face of
hanging style of door, on the said plate is formed a semicircular ridge with a rising
gradient cach way from its centre, on the said ridge a small wheel works to carry
the weight of the door, in this plate a circular hole is bored for the guide bolt to
work in. In the centre of said semicircular ridge is formed a small hollow into
which the wheel drops thereby keeping the door in position when closed.
On the heel of door is fixed a metal casing with guide bolt and aforesaid wheel,
the latter for the purpose of traversing the semicircular ridge in either direction
the door may be required to open.
On the head of door is fixed a metal casing in which is fitted a guide bolt on
a spiral spring, the guide bolt works in a metal plate fixed in the head of door
frame.
Dated this 16th day of Jul 1901
BROWNE & Co.,
60, Chancery Lane, Agents to Applicants.
COMPLETE SPECIFICATION.
An Improved Means for Automatically Closing Doors.
We FREDERICK JAQUES TREACHER of 21 Cole Street Great Dover Street
Borough in the County of Surrey and THOMAS JAMES LINSKILL of 66 Chatterton
Road, Finsbury Park in the County of Middlesex, Carpenters, 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 this invention is an improved means whereby doors are auto-
matically closed.
According to this invention we construct a metal plate of suitable form and size
which is fixed in the floor, the back edge of such plate being flush with the face of
hanging style of door, on the said plate is formed a semicircular ridge with a rising
gradient each way from its centre, on the said ridge a small wheel works to carry
the weight of the door, in this plate a circular hole is bored for the guide bolt or
spindle to work in. In the centre of said semicircular ridge is formed a small
hollow into which the wheel drops thereby keeping the door in position when
closed.
On the heel of door is fixed a metal caster with guide bolt or spindle and afore-
said wheel, the latter for the purpose of traversing the semicircular ridge in either
direction the door may be required to open.
Fig. 1. shews my invention in elevation.
Fig. 2. shews plan of same.

page_text: a shews bed plate to screw to floor on the inner surface of which are formed two
segmental ridges b. b. having a rising gradient each way from the centre c-d shews
metal casting revolving on bed plate a by means of pin e one end of which takes in
hole and the other end is fixed to casting d-g is a bolt to the lower end of
which is mounted a roller h and the upper end is pressed upon by spring i. (shewn 5
dotted in drawing) j. j. are two plates fastened to casting between which the heel
of the door takes:-
The action is as follows:-The bed plate a. being fitted in the floor under the
heel of door and the casting d being placed over heel of door when the door is in a
closed position the roller h rests between the ridges b. b. but upon opening the door 1
the roller h rises up one or other of the gradients b. b. according to whether the
_door is opened inwards or outwards the spring i allowing for the rise. k is a slot
in which a pin fixed to bolt g works to prevent this latter being forced out.
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
I claim is
The improved means hereinbefore described for automatically closing doors.
Dated this 19th day of April 1882.
BROWNE & Co.,
60, Chancery Lane, W.C., Agents for Applicant.