Improvements in Rising and Falling Hinges for Doors and other Purposes.
Year: 1889

page_text: Date of Application, 21st June, 1889
Complete Specification Left, 18th Mr., 1890-Accepted, 19th Apr., 1890
PROVISIONAL SPECIFICATION.
Improvements in Rising and Falling Hinges for Doors and other
Purposes.
SAMUEL HENRY WORMALD Blacksmith 88 Commercial Road Kirkstall near
Leeds Yorkshire. I do hereby declare the nature of this invention to be as
follows:-
My invention consists in forming rising and falling hinges in the following
manner.
The hinge is composed of two parts only the parts which form the joint in each half,
are made of such a shape, that when both halves of the hinge are brought together and
bent round a small mandril, they form two helical screws; that is to say that in place
of the ordinary "be" and "she" joints, these joints take a spiral form, and the
alternate parts of each screw belongs to each respective half of the hinge, and at the
same time, they lock each other in such a manner, that it is impossible to separate one
half from the other, thus dispensing with a centre pin, but one half of the hinge being
fixed to door frame, the other half is free to rise vertically upon it thus giving the
required rising and falling action.
D
تيمى
T
1000
COMPLETE SPECIFICATION.
Improvements in Rising and Falling Hinges for Doors and other
Purposes.
I, SAMUEL HENRY WORMALD, of 88, Commercial Road, Kirkstall, Leeds, in the
County of York, Smith, 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 :-
My invention relates to the construction of rising and falling hinges for doors and
other purposes, and has for objects to dispense with the central or axial pin heretofore
common to such hinges for holding the two parts together, and to produce a hinge
that as compared with hinges of this kind as hitherto made, shall be cheaper, lighter
in construction, more durable, have greater wearing surface in the helical joint and be
less liable to get out of order.
My improved hinge comprises only two parts, these being joined together by each
part having on one of its edges a helically formed projection or projections; which
projections mesh and interlock with each other in such a manner that the two parts
forming the hinge are inseparable, while at the same time they are free to turn upon
each other to the extent usual in ordinary hinges.
During such turning the rising and falling, or the movement of one part of the
hinge upon the other in the direction of the axis of the joint, takes place by reason of
the inclination of the several helical projections forming the joint.
When hinges according to my invention are made of wrought sheet or plate
metal I form on one edge of each part, equal projections and spaces at a suitable
angle so that the projections of one part will take into or mesh with the spaces
of the other part. Then I coil these projections around a mandrel or pin which
I afterwards remove, the said two parts being then inseparably connected and the
coiled projections forming the helical joint required to give the rising and falling
movement as one part turns upon the other.
But I prefer to form my improved hinges by casting the parts of any suitable
metal

page_text: Having first cast one part with its helical projections, I coat such projections with
a wash of thin loam or of such other material as will prevent molten metal adhering
thereto, and I next cast thereon the corresponding part. The two parts are free to
move upon or around each other but are inseparable as above set forth.
In the annexed drawings Fig. 1. shews two parts A, and B, of sheet metal in
the flat state for forming a hinge according to my invention, the angular parts a,
and b, meshing into each other. When these parts are bent together around a
mandrel or pin the projections form the helical joint, the parts thereof being now
permanently interlocked, the mandrel or pin is removed. Fig. 2. is an end view
after the joint has been formed. Fig. 3. is a side view. Fig. 4. shews the hinge
as it would appear with the part A, fixed to a door post or casing and the
part B, to a door, the said door being open and raised from the floor by the
action of the helical joint. Fig. 5. shews in sido view a hinge with the two parts
cast together. Fig. 6. shews this hinge as it would appear attached to a door and
post or casing as in Fig. 4. Fig. 7. is an end view.
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
1. A rising and falling hinge without central or axial pin substantially as
described.
2. A rising and falling hinge constructed substantially as described with reference
to Figs. 1 to 4, or to Figs. 5 to 7. of the drawings..
Dated this 17th day of March 1890.
Witness,
THOS. EDWIN CRAVEN, Fel. Inst. P.A.,
24, Victoria Chambers, Leeds.
SAMUEL HENRY WORMALD.