AN IMPROVED HINGE
Year: 1885

page_text: I THOMAS GREENWOOD of St. Michaels Road, Croydon, in the County of
Surrey, Cabinet Maker do hereby declare the nature of my said invention for
"AN IMPROVED HINGE," to be as follows:-
The object of my said invention is the construction of an universal hinge
adapted for all purposes that these hinges are used for, but specially suitable for
screens and I will therefore describe it as applied to such. My hinge is constructed
as follows:-I take two small plates each having formed at one end at right angles
to the plane of the plate, a small toothed segment. These segments gear with each
other and are kept at a proper distance apart by a small link pivotted at the centre
of each of the toothed segments. To fix the hinge the plates are screwed on to the
ends of the frames forming the screen, the two parts are then brought together and
connected by the link as before described. A bead of wood, or any other suitable
material is fixed above and below the hinge on each part of the screen, so as to fill
up the space and the bead being made circular and struck from the pitch line of
the toothed segments forms a perfectly tight joint. It will be seen that the parts
of the screen hinged together may be folded in either direction with equal facility.
Dated this 3rd day of January 1885.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer & Patent Agent,
Royal Courts Chambers,
70, 71, & 72, Chancery Lane, London, W.C.,
Agent to the Applicant.

page_text: "
I THOMAS GREENWOOD of St. Michaels Road, Croydon, in the County of
Surrey, Cabinet Maker do hereby declare the nature of my said invention for
'AN IMPROVED HINGE, 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 my invention is the construction of an universal binge adapted for
all purposes that these hinges are used for, but specially suitable for screens, and
for the purpose of this specification I will describe it as applied to such.
My improved hinge is constructed as follows;-I take two small plates, each
having formed at one end at right angles to the plane of the plate, a small toothed
segment. These segments gear with each other, one being fixed to each panel of
the screen to be hinged together, and are kept in gear with each other by a radial
link pivotted at the centre of each segment. The radial link may be pivotted on
pins forming part of the segmental plates so that the hinge may be self-contained,
or the link may be pivotted to the segments by having short pins formed on the
ends of the link fitting into recesses cut in the segmental plates. In this latter
arrangement I prefer to use four segmental plates for each hinge, arranging them.
in pairs, each pair being fixed with the segments face to face with the link between
them, but it is only necessary that one pair of segmental plates should have teeth
on them.
To fix the hinge the segmental plates are screwed to the edges of the panels of
A bead of
the screen to be hinged together, and are connected by the radial link.
wood on other suitable material is then fixed on the edge of the panels above and
below the hinges, to fill up the space between the two parts of the screen, and the
bead being made semicircular and struck from a radius equal to that of the pitch
line of the teeth on the toothed segments, forms a perfectly tight hinge joint.
In order that my invention may be fully understood I will more particularly
describe it with the aid of the accompanying drawings, in which similar parts are
marked with like letters of reference.
Figs. 1 and 2 are an elevation and a sectional plan of part of the framework of
two panels of a screen hinged together by my improved hinge. Fig. 3. is a side
elevation. Fig. 4 an end elevation, and Fig. 5, a plan, with the top segmental
plates removed, of one arrangement of my hinge. Fig. 6. is a view showing the
loose radial link, Figs. 7. and 8. are an elevation, and plan respectively of the
simplest form of my hinge, in which the radial link is fixed to the segmental parts
so that the hinge is self contained.
Referring to Figs. 1. 2. 3. 4. 5. and 6. A. designates the segmental plates with
teeth on them, and A¹ the plain segmental plates. B designates the radial link,
provided with short studs or pins b. b etc. at the ends, which fit into recesses a. a
and a al in the plates A. and A¹ respectively. The plates A and A¹ are screwed on
to the edges of the panels of the screen X and X, with the radial link B in position
between them, and a bead Y of wood, or other suitable material, is then fixed to
the edges of the panels X and X,

page_text: Referring to Figs. 7 and 8. A. designates the toothed segmental plates and B the
radial link pivotted on the pins a. a. forming part of the plates A. & A. the ends
of the pins being rivetted over to keep the link in place.
It will be obvious that the arrangement and construction of this hinge may be
varied to suit its various adaptations without departing from the principle of my
invention and 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 claim is
First. A hinge constructed arranged and operating as herein before described
and shown, or any mere modification thereof.
Secondly. A binge consisting essentially of the two toothed segmental plates A. A,
and the radial link B, all combined, arranged, and operating as and for the purpose
hereinbefore set forth.