An Improved System of Constructing Hinge Joints with Internal Oil Chamber.
Year: 1894

page_text: Date of Application, 22nd June, 1394-Accepted, 11th Aug., 1894
COMPLETE SPECIFICATION.
An Improved System of Constructing Hinge Joints with Internal
Oil Chamber.
I, ZEPHYR LEGLAY of 14 Rue Monthyon, Paris, in the Republic of France,
Machinist, 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 :-
This invention relates to an improved hinge which can be regulated at will and
which contains an enclosed oil chamber into which dust cannot enter.
At the same time the construction allows the working parts to be easily kept
clean.
I will now describe the invention with reference to the accompanying drawings
in which,
Fig. 1 shows a front elevation of my improved hinge.
Fig. 2 shows the same partly in section and
Fig. 3 is a slightly modified form of same.
As seen in Figs. 2 and 3 a bolt 6, made of tempered steel is screwed through the
upper knuckle a, and forms the pin or male part of the hinge. This pin may be
cast in the knuckle a or fastened in any other suitable way. The lower end of this
pin is formed slightly convex as shewn at , and bears against a similar convex
end of an adjustable screw d, which is inserted in the lower end of the knuckle c.
This screw is also made of tempered steel and passes through a head e as shewn,
and by means of which it can be withdrawn when required.
The head e may have a hole as in Fig. 1 for the insertion of a lever or may be
turned by means of the slot shown in Figs. 2 & 3.
The pin as will be seen is inserted in the female knuckle and this knuckle
also contains the oil chamber, and the small hollow or recess g by means of
which oil is admitted around 6, and thus into the chamber f. The oil chamber /,
as well as the hole which receives the pin b, can be formed by drilling out the
metal; or I can bore out a hole the diameter of the chamber, and then insert a
steel tube in the upper part to form the hole for the pin, or I can arrange a
support for in any other suitable way. The two convex ends d' are so formed
as to take all the friction of the hinge.
The letter e, Fig. 3 indicates a leather washer lodged in a circular recess in the
screw e, the object of which is to prevent leakage from the reservoir ƒ.
This is all the difference between Fig. 2 and Fig. 3.
Instead of forming the pin, of tempered steel I wish it to be understood that I
may form the whole of the hinge of steel and can temper the steel pins and also
the lower end of the oil box, or if preferred the pins might be formed separately
and fixed in some other way, instead of being screwed as shewn.
My improved joint is applicable to all kinds of ordinary hinges whether of single
or double action.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The system of constructing hinge joints with internal oil chamber and
adjustable bearings, as herein described and set forth.

page_text: 2. In a hinge joint, the combination of the pin b, screw d, head e, knuckles a, 6,
oil chamber, and oil hole g, as herein described and set forth.
Dated this 22nd day of June 1894.
S. S. BROMHEAD,
97, Newgate Street, E.C., Agent for Applicant.