Improvements in the Fastenings for Connecting Lamp Burners to the Reservoir Mounts.
Year: 1891

page_text: Date of Application, 1st July, 1891
Complete Specification Left, 1st Apr., 1892-Accepted, 7th May, 1892.
PROVISIONAL SPECIFICATION.
Improvements in the Fastenings for Connecting Lamp Burners to
the Reservoir Mounts.
We, ALFRED HENRY GRIFFITHS, Managing Director, & THOMAS BAKER
SMITH, Foreman of Works, both of Surrey Works, Smethwick, near the City
of Birmingham, do hereby declare the nature of this invention to be as follows:-
This invention relates to the method of securing the burners of lamps to the
mount or collar which is fixed to the oil vessel.
:-
The ordinary method of attachment consists, of an overhanging claw or catch
provided upon each side of the burner, which engages with an inclined surface or
short flange, provided upon the mount of the vessel or container.
In such cases, it is possible that when such parts have been in wear some time
they become a little loose, and should the lamp be overturned or otherwise jerked,
the two parts may become separated. It is to obviate the possibility of this danger,
that we have made. this our invention, which consists as follows:-
In combination with such fastening we provide a spring catch, that is, we form a
spring, and secure its one end to the reservoir mount below that part of the usual
fastening already described which is secured to such mount, and which we will
term the inclined flange projection. In this inclined flange projection a hole or
slot is made near its front or entrance end.
The latch spring aforesaid is extended below it, and terminates with a push or
pressure part. Immediately below the slot or hole in the inclined flange and upon
the spring, is formed an upstanding projection, which enters the said hole and having
its front or entrance side bevilled. The tendency or normal position of this spring,
is always to stand outwards as far as the hole will permit.
Thus, upon passing the burner on to the mount and turning it around into
position, the overhanging claw or catch rides over the bevilled surface of the
When it has
spring, the latter yielding in order to permit of its passing over.
passed the spring, the latter returns to its normal position and prevents the return
or unfastening of the said claw.
In order to remove the burner, the spring is pressed inwards, when the return of
the claw is permissible, and the unfastening may be effected.
One of such latch spring fastenings only, may be used, or, if preferred one on
either side may be employed.
Dated this 30th day of June 1891.
CHARLES T. POWELL,
Applicants' Agent.
COMPLETE SPECIFICATION.
Improvements in the Fastenings for Connecting Lamp Burners to
the Reservoir Mounts.
We, ALFRED HENRY GRIFFITHS, Managing Director, & THOMAS BAKER
SMITH, Foreman of Works, both of Surrey Works, Smethwick, near the City of
Birmingham, 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 the method of securing the burners of lamps to the
mount or collar which is fixed to the oil vessel.
The ordinary method of attachment consists of an overhanging claw or catch

page_text: provided upon each side of the burner, which engages with an inclined surface or
short flange provided upon the mount of the vessel or container.
In such cases it is possible that when such parts have been in wear some time,
they become a little loose, and should the lamp, be overturned or otherwise jerked,
the two parts may become separated. It is to obviate the possibility of this danger,
that we have made this our invention which consists as follows :-
1
In combination with such fastening, we provide a spring catch of the form and
construction hereinafter described, that is, we makera spring and secure its one end
to the reservoir mount below that part of the usual fastening already described
and which latter we will term the inclined flange. In this inclined flange, a hole
or slot is made near its front or entrance end.
The spring catch aforesaid is extended below it and terminates with a push or
pressure part. Immediately below the slot or hole in the inclined flange and upon
the spring, is formed an upstanding projection which enters the said hole and
having its front or entrance side bevilled. The tendency or normal position of this
spring, is always to stand outwards.
Thus, upon passing the burner on to the mount and turning it around into
position, the overhanging claw or catch rides over the bevilled surface of the
spring, the latter yielding in order to permit of its passing over. When it has
passed the spring, the latter returns to its normal position and prevents the return
or unfastening of the said claw.
In order to remove the burner the spring is pressed inwards, when the return of
the claw is permissible and the unfastening may be effected.
One of such latch spring fastenings only may be used or, if preferred one on
either side may be employed.
In order to better explain this our invention we have appended hereunto an
illustrative sheet of drawings, upon which are figures and numbers of reference,
similar numbers referring throughout the several views to the same thing or part;
and 'in which :-
Fig. 1, is a front'elevation, and Fig. 2, a sectional plan view, on-line A-A,
(Fig. 1), and Fig. 3, a cross sectional elevation on line B-B' (Fig. 1), of this our
invention:
Fig. 4, is a view in elevation showing the arrangement when the burner is
being passed on to its fastening, and Fig. 5, is a sectional plan- view on line. C-C
(Fig. 4).
Figs. 6 &.7, are detached detail views of the spring catch.
Figs. 8 & 9, are front views of a modification of this our invention.
Figs. 10 & 11, are detailed front and plan views of the modified form of spring
catcli.
1, is the lower part of the burner and 2, is the mount which is secured to the
top of the reservoir or oil container, sufficient of both only being shown necessary
to illustrate this our invention. 3, is the overhanging claw which is secured to
the burner flange 4: 5,is the inclined flange which is secured to the mount 2, and
with which the claw 3, engages in the ordinary manner.
6, is the spring catch which is secured at 7, to the mount 2. Upon this catch is
formed the upstanding projection 8, which moves in the slot 9, made in the flange 5.
This spring catch 6, has at its front end the bevilled or inclined surface.at. 10, and
the terminating push part 11.
Instead of making the slot 9, an open slot, we may make arhole for the pro-
jection 8, to work in; but we prefer to make it as shown, and to further control the
extent of the spring, motion of the catch 6, by means of the pin 12, which is
secured at its one (inner) end to the mount 2, whilst its shank, part engages
loosely with a hole in the spring catch, and further having, at its outer end-the
enlarged head 13. The said hole in the spring catch being smaller than the head 13,
the said catch in its outward (normal) position rests against such head.
Again. In the modification shown in Figs. 8, 9, 10 & 11, the catch 6 is secured
at 7, and the bevilled or inclined surface is formed in the body part of the piece

page_text: at 10%, while the upstanding projection 8, shown in Figs. 1, 3 and 6, is now dispensed
with. The pin is used as before.
Thus upon passing the burner on to the mount, and turning it round into position
the overhanging claw 3 or 3ª, rides over the bevilled surface 10 or 10" of the spring
catch, the latter yielding in order to permit of its passing over, as seen in Figs. 4
aud 5. When it has passed the spring catch, the latter returns to its normal
position, and prevents the return or unfastening of the said claw.
In order to remove the burner the spring is pressed inwards, when the return of
the claw is permissible and the unfastening may be effected.
One of such latch spring fastenings only may be used or, if preferred one on
either side may be employed..
Having now particularly described and ascertained the nature of this our said
invention, and in what manner the same is to be performed, we declare that
what we claim is :-
1. The combination in a lamp burner fastening, of the usual claw 3. and flange 5,
with the spring catch 6, having bevilled surface 10, and the projection 8, working
in slot 9, and upstanding peg 8, and controlled by pin 13, in the manner shown and
described in Figs. 1 to 7.
2. The modified combination in a lamp burner fastening of the usual claw 3, and
flange 5, with the spring catch 6, having bevilled surface 10", and pin 13 in the
manner shown and described in Figs. 8, 9 & 10.
1 1000
CHARLES T. POWELL,
Applicants' Agent.