Improvements in Hinges.
Year: 1887

page_text: Date of Application, 27th Dec., 1887
Specification Accepted, 27th Jan., 1888
Improvements in Hinges.
A communication from abroad by JOSEPH STRACHAN of Brooklyn, King's County,
State of New York, United States of America, Civil Engineer."
I, WILLIAM PHILLIPS THOMPSON F.C.S. M.I.M.E. of the Agency for Foreign
Patent Solicitors 6, Lord Street, Liverpool and 6, Bank Street, Manchester, both in
the County of Lancaster, and 323 High Holborn in the County of Middlesex, Civil
Engineer, 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 to provide a flush hinge, in which there will be no
projecting parts above the lid or hinged portion when it is closed, and in which the
parts of the hinge will move easily upon one another, and not be liable to get out of
order.
.
This invention is shown in the accompanying drawings, in which figure 1 is a top
view of the improved hinge; figure 2 is a side view of the hinge; figure 3 is a side
view showing the hinge partly opened; figure 4 is a vertical sectional view on the
line 4-4 of figure 1; figure 5 is a vertical sectional view on the line 5-5 of
figure 1; figure 6 is a sectional view on the line 6-6 of figure 5; figure 7 is a
sectional view on the line 7-7 of figure 4; figure 8 is a top view of the fixed part
of the hinge figure 9 is a top view of the connecting slide; and figure 10 is a
view of the under side of the movable part of the hinge which is attached to the lid
to be hinged. Similar letters refer to similar parts in the different figures.
Referring to the drawings:-A, is the part of the hinge which is fastened to the
lid or object to be mounted on the hinge; B, is the fixed part of the hinge. On the
under side of the fixed part B is a semi-circular box F, with flat ends on which are
the curved tracks g-g. Extending partly over the semi-circulur box F, is a
projecting portion, l. The pin his fastened rigidly on the curved part of the semi-
circular box F and projects from its inner surface.
E is a connecting slide shown in figure 9, and is semi-circular in form, and
adapted to fit snugly into the box F. On the ends of the slide E, are the semi-
circular lips m, m, adapted to fit between the bottom of the semi-circular box F and
the tracks g-g on its flat ends. n is a slot on the under surface of the slide E for
the purpose of receiving the pin h, and extends over a part only, of the under surface

page_text: of the slide E, as shown in Figure 4. o-o are slots in the slide E which are enlarged
at its under surface so as to form shoulders as shown in figure 7.
To the under surface of the movable part A, is fastened the curved portion c
which is adapted to fit and move upon the inner surface of the slide E. To the
curved portion c are attached the pieces b-b made with shoulders at their lower ends;
these pieces are made to fit into the slots o o, and are held in those slots by means of
the said shoulders as shown by figure 6.
The slide E moves in the semi-circular box F; the lips m m fitting under the
tracks g g, so that the slide E can move only in a rotary direction; the projecting
portion of the fixed part B stops the motion of the slide E in one direction and the
pin coming in contact with the end of the slot n on the under side of the slide E
stops its motion in the other direction thus the slide E is prevented from leaving its
seat in the semi-circular box F. The curved portion c on the under side of the
movable part A of the hinge moves in a rotary direction within the slide E and is
held continually in contact therewith by the pieces b b which move in the slots o o, and
are held therein, as shown in figure 6.
In opening the hinge the curved portion c moves on the slide E till the projections b
and breach the end of the slots o o; then the slide E moves with the portion c and
slides on F till the hinge is open. In closing, the operation is similar.
When the hinge is closed, the parts A and B are flush with each other, and have
no projection from their upper surface. When the hinge is opened, the lid or part
fastened to A, will rest flatly and evenly on top of the fixed object to which B is
fastened. The operation of my hinge is simple; it is not liable to get out of order
as its working parts are protected by the box F; and it is inexpensive.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated
to me by my foreign correspondent, I declare that what I claim is :-
1. A hinge substantially as shown and described consisting of a circular slido
adapted to be attached to the lid or object to be hinged, and a fixed circular track in
which the slide moves.
2. A hinge, substantially as shown and described consisting of a slide connected
with the lid or object to be hinged, a connecting slide on which the first slide moves,
and a fixed track on which the second slide moves.
3. A flush hinge, substantially as shown and described, consisting of an outer semi-
circular box, attached to the under side of the fixed portion, a connecting slide shaped
to fit the interior of the box, and adapted to move upon its inner surface and a curved
portion attached to the lid shaped to fit the interior of the connecting slide, and
adapted to move upon its inner surface and pins or projecting pieces for holding said
parts together and limiting their motion.
4. A hinge, substantially as shown and described, consisting of the circular slide
connected with the lid or object to be hinged, the circular connecting slide, provided
with a series of grooves the dentals projecting from the first slide and working in
grooves in the second slide, the fixed circular box in which the slides move, and the
track and the stop pin attached to said box and projecting into a groove in the second
slide, so as to hold it in its position and limit its motion.
5. A hinge consisting of the parts A and B, the slide E, provided with slots o o
and n, the box F, the tracks 9 g, the pin h, the projecting portion 7, the curved portion c,
and the pieces bb, substantially as shown and described.
Dated this 24th day of December 1887.
WM. P. THOMPSON & Co.,
Agents for the Applicant.