Year: 1885

page_text: I, PAUL HARTZENDORFF of the firm of Messrs Hartzendorff & Lehmann of Berlin
in the Empire of Germany, Manufacturer, do hereby declare the nature of this
invention to be as follows:
The invention relates to improvements in lamps for velocipedes, and has for its
object to overcome the difficulties before experienced in retaining the wicks of such
lamps in their proper positions.
The appliances heretofore known for such purposes consisted principally in
arresting or clipping the wick regulating spindle by means of a screw.
These means of retaining the wick in position, being employed inside the lamp,
are very inconvenient and moreover do not give sufficient security.
The continual shaking has also a great tendency to turn the said screws, and
does not prevent an accidental turning of the same.
To remedy these defects the invention consists in the combination of a cover
sliding in a vertical direction, with an arresting disc mounted on the wick regu-
lating spindle, and such combination, with the application of a retaining lever,
actuated from the lamp door.
For such purpose I mount outside the lamp, on the wick regulating spindle of
the oil chamber, an arresting disc formed with teeth or holes. The sliding cover is
arranged to move in grooves formed in the frame of the lamps and provided on its
lower end with a projection or pin, with rests between the teeth or in the springs
of the arresting disc, as the case may be, whereby an accidental turning of the wick
regulating spindle, when the sliding cover is closed, is prevented.
An accidental unlocking of this arresting device through shocks and vibrations
cannot take place, the sliding door being arranged vertically will always, on
account of its weight and projection cause the arresting disc to remain in the same
position.
When the sliding door is raised, the projection of the same leaves the arresting
disc, and the wick may then be regulated as required and through the opening
created in the frame of the lamp, thereby lit.
When opening the door in front of the lamp for the purpose of taking out the
oil chamber, a retaining lever fixed to the said door comes into action, in such a

page_text: manner that an opening of the front door causes a retaining of the sliding side
door, and thereby preventing an accidental turning of the wick regulating spindle
and extinguishing of the lamp wick.
To facilitate the taking of the oil chamber out of the lamp frame, a spring is
suitably arranged which pushes the oil chamber against the lamp door.
The latter, after the oil chamber has been put into the lamp frame, is closed and
secured by means of a nose spring, the wick may then be regulated and lit through
the opening caused by the open sliding door. When the latter is closed, the pro-
jection formed on the sliding door will enter between the teeth of, or into the boles
on the arresting disc mounted on the wick regulating spindle, and prevent the
latter from accidental turning.

page_text: I, PAUL HARTZENDORFF, of the firm of Messrs Hartzendorff & Lehmann of Berlin
in the Empire of Germany Manufacturer, 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 :-
The invention relates to improvements in lamps for velocipedes, and has for its
object to overcome the difficulties before experienced, in retaining the wicks of such
lamps in their proper positions.
The appliances heretofore known for such purposes consisted principally in
arresting or clipping the wick regulating spindle by means of a screw.
These means of retaining the wick in position, being employed inside the lamp,
are very inconvenient, and, moreover, do not give sufficient security.
The continual shaking has also a tendency to turn the said screws, and does not
prevent an accidental turning of the same.
To remedy these defects the invention consists in the combination of a cover
sliding in a vertical direction, with an arresting disc mounted on the wick regu-
lating spindle, and such combination, with the application of a retaining lever,
actuated from the lamp door.
And in order that my invention may be better understood I have caused to be
appended hereunto two sheets of drawings marked with letters of reference indi-
cating like parts in the various figures.
Figs. 1 & 3 Sheet I are vertical side sections showing the door B open and closed
respectively. Fig. 2 a vertical front section. Fig. 4 a side view, Figs. 5, 6, Sheet I,
and 7, and 8 Sheet II are enlarged detached side views, and Fig. 9 a section of
modification of this invention.
In carrying out my invention I mount outside the lamp, on the wick regulating
spindle a of the oil chamber o, an arresting disc b formed with teeth, see Figs. 2
and 5, or holes, see Fig. 6.
The sliding cover A is arranged to move in grooves formed in the frame of the
lamps and provided on its lower end with a projection or pin h, which rests between
the teeth or in the openings of the arresting disc b, as the case may be, whereby an
accidental turning of the wick regulating spindle a when the sliding cover A is
closed, is prevented.
An accidental unlocking of this arresting device through shocks and vibrations
cannot take place, the sliding door A, being arranged vertically will always, on
account of its weight and projection cause the arresting disc b to remain in the
same position.
When the sliding door is raised, the projection h of the same leaves the arresting
disc b, and the wick may then be regulated as required, and through the opening
created in the frame of the lamp, thereby lit.
When opening the door B in front of the lamp, see Fig. 3 for the purpose of
taking out the oil chamber o, a retaining lever p, fixed to the said door B, comes
into action in such a manner that an opening of the front door B causes a retaining
of the sliding side door A, and thereby preventing an accidental turning of the
wick regulating spindle a and extinguishing of the lamp wick.

page_text: To facilitate the taking of the oil chamber o, see Figs. 1 & 3 out of the lamp
frame, a spring f, is suitably arranged which pushes the oil chamber o against the
lamp door B.
The latter, after the oil chamber o has been put into the lamp frame, is closed
and secured by means of a nose spring n, the wick may then be regulated by means
of the spindle a and lit through the side opening.
When the side door A is closed, the projection h formed on the sliding door will
enter between the teeth of, or into the holes on the arresting disc 6 mounted on the
wick regulating spindle a, and prevent the latter from accidental turning.
The wick regulating spindle a see Figs. 7, 8 and 9 may also be prevented from
accidental turning indirectly, by the side door A, namely by the employment of a
spring arresting nose n between the arresting disc b and side door A in such
a manner that when the side door A is descending, the arresting nose n is pushed
by an inclined surface or lever h¹ fixed to the slide door A, into the holes or the
teeth of the arresting disc b, thereby the wick regulating spindle is secured against
accidental turning.
Figs. 7 and 9 show the side door A raised and lowered and the wick regulating
spindle arrested or liberated respectively.
This arrangement simplifies the construction of the lamp considerably & dispenses
with the lever p for the slide door A.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be particularly described I declare that
what I claim is :-
1st The combination of a vertical sliding cover or door A with an arresting disc b
fixed on the wick regulating spindle a for the purpose of causing the parts A & b
to be coupled, on the cover or door A being shut, and entering the arresting
disc b, whereby the wick regulating spindle a is secured against turning, as set
forth.
2nd By the combination named in the preceding claim, the employment of a
lever P moved from the lamp door B for the purpose of self-actingly uncoupling the
cover or door A, and the lever b and the arresting disc b issuing with the lamp, for
the purpose of preventing an extinguishing of the lamp as set forth.
3rd By the combination named in Claim 1, the employment of a spring, arresting
nose n, between the arresting disc b and cover or door A, which nose n on the
descent of the cover or door A is pushed into the arresting disc b, thereby securing
the wick regulating spindle against turning, as set forth.