Improvements in and relating to Lamps for Cycles and other Vehicles.
Year: 1897

page_text: COMPLETE SPECIFICATION.
Improvements in and relating to Lamps for Cycles and other
Vehicles.
I, CONRAD SCHAMMERINGER of The Metal Goods Works, 14 Querstrasse Mannheim in
the Empire of Germany, Manufacturer of Metal Goods, 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 a new lamp for cycles and other vehicles which differs
from those heretofore known by the new construction of the lamp casing, of the
burner, of the hood, and of the clip for fastening the lamp to the bracket or support.
The lamp is illustrated in the accompanying drawings in which Figure 1 is a view in
side elevation-partly in section; Figure 2 is a horizontal section through the
attaching clip, Figure 3 is a front elevation and Figure 4 is a side elevation of the
casing.
Throughout the views similar parts are marked with like letters of reference.
First as regards the casing, this consists of two mutually intersecting cylinders m
and n of which the horizontal one n has a larger diameter than the vertical one m.
The latter is cut away or perforated to correspond to the clear inner space of the
horizontal cylinder and in such a manner that its upper and lower parts are yet
firmly held together by means of the two connecting pieces a¹. By means of this
arrangement the glass chimney which has hitherto been necessary in casings of
irregular cross sectional area and of prismatic shape is replaced directly by the
upper part of the casing m ; which is of very great advantage in the case of cycle
lamps which are often exposed to violent vibration. The round burner used in this lamp
and the construction of which is shown in Figure 1, affords by means of its novel
construction considerable advantages over the burners heretofore generally used. For
the purpose of providing a uniform supply of air to the burner, two hoods a and b are
provided, enclosing the burner gallery. The inflowing air is arrested in the first
annular opening c whence it passes to the opening f of a ring e, and through the
annular space i and the openings g into the interior of the burner tube d. If this air
were allowed to pass direct into the burner tube d and thence to the flame, then,
when riding rapidly, the strong draught thus produced would extinguish the flame.
Now with the special object of preventing this the hood e is provided only over two-
thirds of its periphery with apertures f but which is imperforate in that portion
which is exactly opposite to the triangular aperture g of the burner tube. By this
arrangement the air is compelled to follow a sinuous path whereby its velocity is so
diminished as to exclude all possibility of extinguishing the lamp.
The third improvement relates to the production of a complete combustion and
For this
consequent production of the maximum possible illuminating power.
purpose there is mounted upon the burner a hood h which presses the air coming up

page_text: from below close against the wick and thus produces an intimate mixture of the
same with the combustible gases. The burner so constructed in combination with
the lamp casing results in causing the flame in this lamp to assume a shape which is
not conical as is frequently the case in other lamps, as the flame rises only in the
form of a short cylinder beyond the top of the edge of the burner so that the flame
is kept together in as concentrated a state as possible in the focus of the concave
mirror, whereby the illuminating effect of this lamp is considerably increased.
The fourth improvement in the lamp consists in the construction of the
hood for the gas exit tube (chimney) of the lamp and its attachment to said
tube.
Heretofore the usual mode of fixing the lamp hood on the cylinder tube consisted
in connecting the two together by means of rivetted connecting pieces. With this
arrangement the hood is very liable to become bent and twisted because the
connecting pieces are usually only four in number. According to the present
improvement however these connecting pieces are entirely obviated, because the
apertures are stamped or punched out of the solid piece. As any number of
apertures may be chosen at will, every desired degree of strength of the hood can be
provided. The connection with the cylinder tube is effected by turning or beading
the lower edge of the hood over a firm edge of the gas exit tube or chimney m.
Finally as regards the attachment of the lainp to the bracket or support, a considerably
improved construction is afforded in the clip used according to this invention. The
usual clips consist of a sleeve which is fixed by means of a lateral set screw upon the
arm or bracket which serves to receive the lamp and which is attached to the frame
of the cycle or other vehicle. This is a very insecure attachment, because the
screw is very liable to be loosened by the vibration and to get lost. In the present
construction, the sleeve is provided with a separate elastic piece y which can be
contracted by means of a screw x. This results in pressing the rubber lining w of
the sleeve from all sides against the arm or bracket and thus effects a secure
connection of the same with the latter.
Having now particularly described and ascertained the
invention and in what manner the same is to be performed
I claim is
nature of my said
declare that what
(1) A lamp for cycles and other vehicles characterised by the fact that the lamp
casing consists of two mutually intersecting cylinders m and n of which the vertical
one has a smaller diameter than the other and is cut away to such an extent in front
and at the rear as to leave only two narrow connecting pieces a¹ for holding the
cylinder m together, as set forth.
(2) A round burner for lamps for cycles and other vehicles characterised by a
hood e which is provided on one portion of its periphery with apertures f and which
is mounted in such a manner that that portion of it which is not provided with
apertures is situated opposite to the opening g that leads into the interior of the
burner tube d, so that the inflowing air is, for the purpose of reducing the draught,
compelled to follow a circuitous course and consequently cannot extinguish the
Hame when the cycle is travelling at a high speed, said effect being further increased
by means of the arrangement of a double hood ab, as set forth..
(3) A round burner for lamps for cycles and other vehicles characterised by a
hood which is mounted on the burner and which presses the air close up against the
wick for the purpose of intimately mixing the same with the combustible gases and
thus effecting complete combustion of the latter, as set forth.
(4) A hood for the gas exit tube or chimney of lamps for cycles and other vehicles
characterised by the fact that the said hood is fixed to the gas exit tube or chimney
by beading its lower edge over the same, and is provided with holes for the escape
of the gas.
(5) An attachment clip for cycle and other vehicle lamps characterised by a sleeve y
which is separately arranged in the clip and which can be drawn together by
means of the screw x, as set forth.

page_text: (6) A lamp for cycles and other vehicles constructed substantially as herein before
described and shown.
Dated this 8th day of October 1897.
ROBERT E. PHILLIPS, Assoc. M. Inst C.E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70 Chancery Lane, London, W.C., Associate Agent for the Applicant.