In- PROVEMENTS IN HINGES FOR AUTOMATICALLY CLOSING Doors AND ĜATES
Year: 1871

page_text: LETTERS PATENT to Patrick O'Connor, of Wavertree, in the County of
Lancaster, Door Hinge Manufacturer, for the Invention of "In-
PROVEMENTS IN HINGES FOR AUTOMATICALLY CLOSING Doors AND ĜATES.”
J
PROVISIONAL SPECIFICATION left by the said Patrick O'Connor,
at the Office of the Commissioners of Patents, with his Petition,
on the 26th August 1871.
I, PATRICK O'CONNOR, of Wavertree, in the County of Lancaster,
Door Hinge Manufacturer, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN HINGES FOR AUTOMATICALLY CLOSING DOORS.
AND GATES," to be as follows:—
My Invention relates to sub-floor and sub-way hinges for auto-
matically closing doors and gates when such doors and gates are left
free, and consists,―
First. As means for securely and durably connecting hinges, both of
the weighted lever and spring class, to doors and gates; in forming the

page_text: above first part of my Invention, in fitting the said back bearing against.
the inner end of the box, and binding it in position by a cross plate
made in two pieces, one of the said pieces being affixed to its outer end.
DESCRIPTION OF THE DRAWINGS.
The accompanying Sheet of Drawings contains views of a hinge 5
embodying the above described four heads of improved constructions and
combinations. Fig 1 is a side elevation showing also part of a door and
top centre; Fig. 2, a perspective view, part of the enclosing case being
removed, and the hinge in position as if the door was part open; Fig. 3,
a plan, the top cover being removed; Fig. 4, a longitudinal vertical 1
section; Fig. 5, a vertical section of a modification under the second
head. Figs. 1, 3, 4 and 5 show the hinge as if the door or gate to which
it is attached were closed. In these views like letters donote the same
parts.
In illustration of the first part of my Invention, a is the centre 18
spindle fitted with an eye 6 to receive the bolt or pin c of the door
strap d. The said bolt or pin o is secured by a screw e in Fig. 1, and by
a nut in Fig. 4; it may be secured by a lock pin, cotter, or other means.
In place of the eye 6 and bolt ca square or other socket may be formed
on the upper end of a and the end of the door strap d arranged to fit 20
into it.
In illustration of the second head of my Invention, fis the roller cam
formed with collars which encircle the guide slides g. Two of these
slides are shown and preferred. h is the cam roller; this moves with
the door or gate by being connected on a rigid guard arm secured to the 25
spindle a. The roller cam frests on the bent weight levers i pivoted
at j, or the collars of ƒ rest on helical springs k, shown in Fig. 5, when
springs are substituted for weights.
In illustration of the third part of my Invention, I are the balance
weights here shown guided by the enclosing frame m, the bottom being 30
made open as drawn ; n side links jointed at o to the bent weight levers i
and at p to the weights .
In illustration of the fourth part of my Invention, q is the centre
spindle back bearing fitting against the inner end of the enclosing
frame m; r, binding cross plate here shown made in one piece and 35
secured by screws to flanges formed on the enclosing case m.
The cross
plater may be formed in two or more pieces.

page_text: Having now described the nature of my said improvements and par-
ticularized the same in such manner that others will be enabled to carry
them separately or in combination into effect, I claim, as improvements
in hinges for closing doors or gates automatically,-
First. Forming the upper end of the centre spindle with a socket or
oye, and the door strap with a bolt or pin, or the equivalents of these
parts, as set forth and illustrated.
Second. Arranging the roller cam so that it moves up and down on
guide slides in contact with the weight levers, or with springs, sub-
stantially as set forth and illustrated.
Third. Suspending the weights from the weight levers by jointed side
links within an enclosing guide case for the purpose of preventing such
weights from swinging, as described and illustrated.
Fourth. In combination with the first part, the back bearing 9 and
binding cross plate r, or two cross plates, substantially as described.
In witness whereof, I, the said Patrick O'Connor, have hereunto
set my hand and seal, the Twenty-fourth day of February, in
the year of our Lord One thousand eight hundred and seventy-
THOS. KENYON,
Witness.
PATRICK O'CONNOR. (L.B.)