A New or Improved Spring Hinge.
Year: 1892

page_text: Date of Application, 1st Nov., 1892-Accepted, 7th Jan., 1893
COMPLETE SPECIFICATION.
. A New or Improved Spring Hinge.
I, HENRY BIRKBECK, Chartered Patent Agent, of the firm of Tongue & Birk-
beck, 34 Southampton Buildings, Chancery Lane, London, do hereby declare the
nature of this invention (a communication to me from abroad by Bommer Brothers,
Manufacturer, of 351 and 353 Jay Street, Brooklyn in the County of Kings
and State of New York, United States of America) and in what manner the
same is to be performed to be particularly described and ascertained in and by
the following statement :-
This invention has reference to improvements in single and double spring-hinges
which improvements are made with a view to facilitate and cheapen the manu-
facture of said hinges and to increase the strength of the same, and the invention
consists firstly of a double spring-hinge in which the barrels are connected by a
three-ply web the intermediate layer of the web.connecting two edges of the barrels
while the outer layers extend from the opposite edges of the barrels and overlap
the middle layer the intermediate and outer layers being made in one piece of sheet
metal with the barrels and rivetted together.
The invention consists secondly of a spring-hinge the leaf of which has a longi-
tudinal stop flange and perforated ears that are bent at right angles to the body of
the leaves and provided with openings for the bushings of the pintle sockets the
stop flange or ears being connected by pins with said pintle sockets for producing
the rigid connection of the leaves with the pintle sockets so that the latter turn
freely with the leaf to which they are attached.
The invention consists thirdly of a spring-hinge the pintles of which are
provided with fixed and threaded sleeves to which detachable caps are applied said
caps forming receptacles for a suitable lubricant which is conducted by a small
channel in the sleeves of the pintle to the pintle sockets so as to keep them
lubricated when in use.
And in order that this invention may be easily understood and readily carried
into practice same will now be fully described with reference to the accompanying
drawings.
Figure 1 represents a side elevation one half being in section of this improved
double spring-hinge.
Figure 2 is a horizontal section on line 2-2 Figure 1.
Figure 3 is a top view partly in section on line 3-3 Figure 1 showing the
leaves of the hinge folded up against the web, and
Figure 4 is a detail section of the pintle socket shown as detached.
Similar letters of reference indicate corresponding parts throughout.
In the drawings A A' represent the spring barrels of a double spring-hinge
and a the connecting web of said barrels which web is made of sheet metal and
of three layers that are made integral with the barrels A A' and rivetted
together.
The intermediate layer of the web a connects one edge of one barrel with the
opposite edge of the other barrel while the outer overlapping layers are bent up
from the opposite edges of each barrel as shown clearly in the horizontal section
Figure 2.
The leaves B and B are provided with longitudinal stop flanges b b¹ at their
inner edges adjoining the barrels A A' and with centrally perforated disk shaped
ears ee that are made integral with the body of the leaves and with the stop
flanges and are bent up at right angles to the leaves. The longitudinal stop
flange b imparts greater strength to the leaf and forms a convenient rest for the

page_text: tension pins d d of the hinge as shown in Figure 1.
the connection between the bent up ears and the body of the hinge.
The stop flange b also forms
Between the perforated ears of the leaf and the ends of the barrel are interposed
pintle sockets C C₁ that take up the friction between the ears and the barrel
respectively without_weakening or reducing the thickness of the perforated
ears e e by wear. The ears e e¹ are connected by pins ff" with the pintle
sockets CC whereby the latter are rigidly connected with the ears so as to
turn with the leaves. The pintle sockets CC are further provided with bushings g
that are extended into the perforations of the ears e el said bushings being enlarged
at their ends so as to strengthen thereby the connection between the pintle sockets
and the leaves.
The pintles E E' are passed through the centre of the barrels and through the
spring sockets F F' the pintle sockets C C¹ and the ears e e to the outside of the
latter and are provided with threaded ends f¹ for attaching the hollow pintle tips
or terminals which are thus made in two sections one section being sleeve shaped
and retained on the pintle ends by enlarging or heading the same-said sleeve shaped
section being provided with an exterior screw thread over which the second
hollow or cap shaped section f' is screwed.
The hollow pintle tips or terminals are supplied with a quantity of lubricating
oil which is conducted to the pintle by means of an inclined channel f' so as to
lubricate the bearing of the pintle when the spring hinge is put up for use. The
single or double spring-hinge is thereby lubricated to some extent when the same
is put up the lubricant being supplied from that pintle tip which is then at the top
of the hinge.
1. T
When the spring-hinge is applied for use it can be lubricated from time to time
in the usual manner by supplying the lubricating oil through the perforations of
the sockets a of the tension pins d.
The spring barrels spring sockets spiral springs and pintles are of the same
construction as in the well known spring-hinges and which separately form no
part of the present invention the essential features of which are the construction
of the three-ply web between the barrels (which web is made integral with the.
latter) and the connection of the pintle sockets with the ears bent up at both ends
of the leaves.
The advantages of this improved spring-hinge are that the hinge can be made
stronger and cheaper inasmuch as the barrels and their three-ply connecting web
are made of one piece that is bent into proper shape by means of dies while the.
connection of the leaves with the barrels and pintle sockets is simplified and made
much stronger than heretofore.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In a double spring-hinge a three-ply web connection for the barrels made of
three layers an intermediate layer connecting the ends of the barrels and two outer
overlapping layers forming extensions of the opposite ends of the barrels the
layers and barrels being made from one integral piece of sheet metal substantially:
as set forth. "
נ'
2. The combination with the spring barrel and pintle of a spring-hinge of a
leaf having a longitudinal stop flange at its inner edge and perforated ears bent
up at right angles to the body of the leaf pintle sockets interposed between the
ears and barrel and pins connecting said ears with the pintle sockets said pintle
sockets having bushings extending into the perforations of the ears substantially as
set forth.
:
3. The combination with the spring barrel and pintle of a spring-hinge of a
leaf having perforated ears bent up at right angles to the body of the leaf pintle
sockets interposed between the ears and barrel and pins connecting said ears

page_text: with the pintle sockets and hollow pintle tips or terminals formed of screw
threaded sections or sleeves attached to the ends of the pintle and provided with
inclined channels and of detachable screw caps substantially as set forth.
Dated this 1st day of November 1892.
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.