Improvements in Flush Hinges.
Year: 1891

page_text: Date of Application, 18th Aug., 1891
Complete Specification Left, 11th Sept., 1891-Accepted, 17th Oct., 189
PROVISIONAL SPECIFICATION.
Improvements in Flush Hinges.
I, JONATHAN DUNLAP DAVIS of 12 Elias Street, Bridgeport, in the County of
Fairfield and State of Connecticut, United States of America, Blacksınith, do
hereby declare the nature of this invention to be as follows:-
The object of my invention is to construct a flush hinge which will not project in
either direction beyond the sides of the parts of the cover to which it is applied.
My invention consists in the combination with the two halves of the hinge
adapted to be secured to the parts to be connected by the hinge, of a connecting
piece pivoted in one half of the hinge and arranged to slide in the other half.
The one half of the hinge has knuckles at opposite ends of one edge of the plate
standing out at right angles to the plane of the plate and at the opposite edge of
the plate bevelled lugs opposite to and projecting in the same direction as the
knuckles from the plane of the plate. The hinge pin passes through the knuckles
and through a knuckle on a sliding plate fitted to slide freely in a transverse
mortise in the other plate of the hinge which is formed of a block having notches
at opposite ends for receiving the knuckles of the first plate. The sliding plate
and the portion of the block behind the said plate are mortised to receive a V shaped
spring which bears against the block and against the sliding plate and tends to
draw the said plate into the mortise of the block.
As the cover is opened the sliding plate is drawn out against the pressure of the
spring and the movable part of the cover is allowed to fold down over the fixed
part and in contact therewith. Where the hinge is used on covers that naturally
lie in a horizontal position, the spring may be omitted. When the hinge is closed
the entrance of the bevelled lugs on the one plate into the notches of the other
plate prevents the longitudinal movement of one part of the hinge upon the other,
but where there is no tendency to such longitudinal movement, the lugs and notches
may be omitted.
1
1001
J. D. DAVIS.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Flush Hinges.
I, JONATHAN DUNLAP DAVIS of 12, Elias Street, Bridgeport, in the County of
Fairfield, and State of Connecticut, United States of America, Blacksmith, 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 my invention is to construct a flush hinge which will not project in
either direction beyond the sides of the parts of the cover to which it is applied.
My invention consists in the combination, with the two halves of the hinge
adapted to be secured to the parts to be connected by the hinge of a connecting
piece pivoted in one half of the hinge and arranged to slide in the other half.
Reference is to be had to the accompanying drawings, forming part of this
Specification, wherein
Figure 1 is a perspective view of my improved flush hinge shewing the hinge
open.

page_text: Figure 2 is a perspective view of the hinge, shewing it closed.
Figure 3 is a transverse section, taken on line 3-3 Figure 5.
Figure 4 is a transverse section, taken on line 4-4 Figure 5; and
Figure 5 is a front elevation of the open hinge. Similar letters of reference
indicate corresponding parts in all the views.
The angled plate A forming one half of the binge is cut away on opposite
edges, forming ears a a with an intervening notch b at one edge of the plate
and a notch cat the opposite edge of the plate. The portions of the edge of the
plate opposite the ears a are provided with bevelled lugs d projecting outwardly
from the plane of the plate. The hinge pin e passes longitudinally through the
ears a and through a knuckle on a sliding plate B. The other half C of the hinge
is formed of a block f having notches g at opposite ends for receiving the lugs d
and provided between the notches with a mortise for receiving the body of the
plate B which slides freely in the said mortise. The sliding plate B and the
portion of the block f behind the said plate are mortised to receive a V-shaped
spring which bears against the block and against the plate B and tends to
draw the said plate into the mortise of the block. As the cover is opened, the
sliding plate B is drawn out against the pressure of the spring i and the movable
part of the cover is allowed to fold down over the fixed part and in contact there-
with. Where the hinge is used on covers that naturally lie in a horizontal position,
the spring may be omitted.
i
When the hinge is closed, the entrance of the lugs d
into the notches g prevents the longitudinal movement of one part of the hinge
upon the other, but where there is no tendency to such longitudinal movement the
lugs d and notches g may be omitted.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what I
claim is :
1. A flush hinge formed of two parts and a connecting piece pivoted in one of
the parts and arranged to slide in the other part, substantially as specified.
2. A flush hinge formed of two parts, a connecting piece hinged to one of the
parts and arranged to slide in the other part, and lugs projecting from one part
and entering notches in the other part, substantially as specified.
3. In a flush hinge, the combination of the angled plate A having the ears a a,
the mortised block f, the sliding plate B pivoted in the ears a and the spring i
arranged to draw the plate B into the mortise in the block f, substantially as
specified.
Dated this 11th day of September 1891.
J. D. DAVIS.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.