THE CLOSING AND HANGING OF SWING AND OTHER DOORS BY MEANS OF THE SPRING AND PIVOTS
Year: 1852

page_text: PROVISIONAL SPECIFICATION left by John William Couchman
at the Office of the Commissioners of Patents, with his Petition,
on the 12th October 1852.
(Void by reason of notice to proceed not having been given within the
time prescribed by the Act.)
I, JOHN WILLIAM COUCHMAN, of No. 8, Princes Terrace, Pultney
Street, Barnsbury Road, in the County of Middlesex, lo hereby declare
the nature of the said Invention for "THE CLOSING AND HANGING OF
SWING AND OTHER DOORS BY MEANS OF THE SPRING AND PIVOTS" to be as
follows:-
The spring cousists of vulcanized india-rubber varying in its several
dimensions from " x 1" x 2" upwards, proportioned to the thickness
and dimensionis of the door on which it is to act; and this is applied
by 4 plates of brass or iron, and 2 screws with shifting heads, of the
following several dimensions for the above sized spring, namely, 2 plates
4"x1" and "thick; 1 plate 8" x 3" and " thick; and 1,
3" x 1" and thick. One of the first 2, and the middle sized one of
these plates to have mortice holes in them of the width and thickness of
the vulcanized india-rubber, to which they would be attached. by small
wire clamps with screws, so as to tightly clip the ends of the india-

page_text: rubber at the back of the plates, thus forming stops; the other plate of
the first 2 to have a mortice hole in it, somewhat larger than the
width and thickness of the said india-rubber, the edges of which
mortice to be rounded so as to admit of the said india-rubber passing
freely through the same. This plate to act as a guide plate, and to be
fixed on the edge of the hanging style of the door by means of
common screws; the other plate of the same dimensions, to which one
end of the said india-rubber is attached, to be secured by the same
means to the hanging jamb, cachi to be let in flush with the surface
of the wood, so that when the door is closed they may be face to face.
The smaller plate to which the other end of the said india-rubber is
attached to be let into a mortice hole in the edge of the hanging style
of the door, behind the guide plate, of sufficient depth to contain the
india-rubber and plate at a tension when the door is closed; this plate
to have a screw hole taped in it at top and bottom for 2 quarter. inch
screws, the length of which to be 3", with squared ends for the shifting
heads to fit on, such ends to be long enough to admit of a small pin
hole for a pin to hold the lead on (which head would be thick).
The last of the before-mentioned 4 plates to have holes drilled in it of
sufficient capacity for the free passage of these screws, and immediately
opposite to the holes taped in the said middle sized plate, and this plate
to be let into tho hanging style from the face, at the distance of 3"
from the edge of the same, and parallell with the other plates; the
mortice in the style for this purpose to be wide enough to admit of the
heads being put in, say "; the india-rubber is then to be drawn to its
tension by means of the screws, with their heads working on the last-
mentioned plate. The hole in the face of the style to be covered with
a neat brass plate let in flush.
The vulcanized india-rubber, when the door is opened, to be protected
by a pliable brass casing working through the guide plate fixed on the
edge of the door, and fixed at one end on the plate secured to the door
janıb.
The door to be hung on pivots, the top one to be fixed on the top
edge of the door, and to work in a socket plate fixed on the head of
the doorway. The bottom pivot (formed with a conical top) to work

page_text: through a brass or iron plate of 6" square and a " thick; the said
pivot being attached to the centre of a plate (on the flat) 6" long,
1" wide, and " thick. with a large screw hole taped at each end.
The large plate to have holes corresponding to the screw holes and
pivot on the small plate, so that by means of two screws to draw the
pivot above the surface of the plate, and insert it in a conical shaped
cup fixed to the bottom of the door.
The large plate to be let in flush with the floor.