Year: 1897

page_text: Date of Application, 11th Mar., 1897-Accepted, 17th Apr., 1897
I, FREDERICK WILLIAM GOLBY, of 36 Chancery Lane, in the County of
Middlesex, Patent Agent, do hereby declare the nature of this invention and
in what manner the same is to be performed, as communicated to me by
Hermann Kiessling, of 42" Pfaffendenfenstrasse, Leipzig Saxony, Germany,
Merchant, to be particularly described and ascertained in and by the following
statement:-
This invention relates to an improved door-hinge contrivance so constructed as
to allow of easy and effective lubrication without lifting the door, and, in which,
the lubricating holes are protected against the admission of dust and air by an
impermeable fastening, so that the oil introduced cannot become rancid, owing to
decomposition by the oxygen in the atmosphere. The retention of the oil on the
principal parts subjected to friction is effected by the peculiar form of the surfaces
of the door-hinge which receive the pressure.
The new door-hinge which forms the subject of this invention is illustrated in the
accompanying drawing.
Fig. 1 shows the arrangement partly in elevation and partly in section.
Figs. 2 and 3 are respectively sectional elevation and plan section of the
contrivance for shutting the lubricating hole when the latter has its opening at the
highest point, whilst Figs. 4 and 5 illustrate a modification of this closing
contrivance.
The new door-hinge consists as usual of the two parts A and B, moveable in
relation to each other, in the lower one of which the pin D is fixed, the top surface
of this last named being formed with a concavity 9. In this concavity g lies or
rests the convex under surface f, of the pin C, which is firmly attached to the
part A by a bolt a. The two surfaces fand 9 which come into contact with one
another receive the principal pressure; most of the friction will thus be produced
there. In order to diminish this as much as possible, the contact surfaces are
reduced by making the curve-radius of the convex surface f on the part C smaller
than the radius of the concave surface on the part D. By this means is formed a
receptacle or space for the oil entering, through the bore e, between the two
surfaces and g, so that the oil is retained as long as possible between the friction
surfaces. The oil running down between the sides or walls of A and D is stopped
by a ring-shape oil-catcher so as to render impossible any smearing of the outside
of the hinge.
In order now to obtain an air-tight closing of the opening used for pouring in
the oil, into the device, two forms of construction are illustrated in the drawings,
both of which are capable of effecting the desired object.
The closing or fastening contrivance illustrated in Figs. 1, 2 and 3 works quite
automatically. It is constructed as follows ;-
The bore e for introducing the oil is suddenly widened at the upper end, so that
the projection or ledge k thus formed can serve as a support for a spring d, whose
other end bears on the plate c3 forming part of or secured to a bolt c2, continued
below in a conical form. The upper end c of this bolt c 2 is provided with a ball-
shaped valve c', which serves to close the pouring in opening in the head or top b.
In order that all the parts of this closing or fastening contrivance may be brought
into operation, the head or top b is formed with a female screw and is screwed on

page_text: to the upper end of the pin or bolt C, this latter being furnished with a screw-
thread for the purpose. Instead of this kind of fastening, a bayonet joint can be
applied for effecting the connection. In the plate c3 are side incisions c4, in order
to allow of the passage of the oil therethrough to the bore e. The closing or
fastening is completely automatic, in so far as when oil is introduced by the
assistance of the spout or nozzle of the oil-can, the ball shaped valve c¹ is pressed
back from the pouring in opening, so that the passing of the oil out of the oil-can
and its entrance into the bore c can be easily effected. The oil-can being drawn
back, the ball shaped valve c' at once closes the pouring in opening again, in
consequence of the pressure of the spring d.
Another and a simpler form of effecting the closing is shown in Figs. 4 and 5.
This form is used when the mouth of the bore e occurs in the ornamental hollow
neck at the top. The closing device of this form consists of a spring i which
nearly encloses and firmly presses the neck of the hollow lubricating device, this
spring being provided with an additional or projecting piece which presses on the
mouth or opening of the bore e and closes the saine. A simple turning of this
piece away from the mouth or opening of the bore e allows free access to the
latter of the nozzle of the oil-can. In order to effect the closing of the opening, it
is only necessary to turn the piece i over it, in doing which either the one or both
of the ends of iis grasped during the act of turning.
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. Door-hinge arrangement or contrivance, the distinguishing feature of which
is that the introduction of the oil to the contact surfaces of the two pins or bolts C
and D is effected by means of a bore, which is air-tightly closed for the purpose of
preventing the introduced oil from being turned rancid, in consequence of the
oxidation of the same, and that the oil is longer retained on the working surfaces
by reason of the concave surface of the upper part of the pin or bolt D having
a larger diameter than the convex surface of the lower end of the pin or bolt C,
substantially as described and illustrated in the accompanying drawings.
2. In a door hinge of the kind indicated in the prece ling claim, the means
described with reference to Figs. 1 to 3 of the accompanying drawings for effecting
the air-tight fastening of the bore e employed for introducing the oil, the
distinguishing feature of which is the arrangement of a pin or bolt c 2 bearing and
pressing the valve c'; the curved or ball shape of the valve body d closing the
pouring in opening in the detachably screwed part 6 in the top C of the hinge
substantially as described.
3. The modification shown in Figs. 4 and 5 for closing the opening of the bore e
through which the lubricant is admitted, and which is formed by a spring i, which
spring almost entirely encloses the neck of the top C and lies firmly thereon, in
conjunction with an additional or projecting piece which likewise is springy in its
action, and closes the mouth or opening of the bore e substantially as hereinbefore
described.
Dated this fith day of March 1897.
F. W. GOLBY,
36 Chancery Lane, London, W.C.