IMPROVEMENTS IN LAMPS For Bicycles AND OTHER VELOCIPEDES."
Year: 1881

page_text: LETTERS PATENT to George Burt, of Birmingham, in the County of Warwick,
Manufacturer, for an Invention of "IMPROVEMENTS IN LAMPS For Bicycles
AND OTHER VELOCIPEDES."
"
PROVISIONAL SPECIFICATION left by the said George Burt at the Office
of the Commissioners of Patents on the 26th April 1881.
GEORGE BURT, of Birmingham, in the County of Warwick, Manufacturer.
'IMPROVEMENTS IN LAMPS FOR BICYCLES AND OTHER VELOCIPEDES."
This Invention consists, firstly, of improved means of securing the lamp upon
the axle, and adjusting it to suit any length of axle. For this purpose I form on
the top of the box clip, by which the lamp is suspended on the axle, a guide, in
which are placed two free sliding plates or tubes working right and left, and each
terminating in clips made of metal carrying a washer. These washers bear upon
the axle against each hub of the wheel, and are maintained at any requisite
distance apart by an adjusting screw bearing on the sliding plates or tubes to
which they are attached, which adjusting screw passes through the guide above
named, and is carried by a bracket on the box clip.
Or the sliding plate may be held in position by means of a rack and spring
catch.
My improvements also apply to the fastening for this box clip, which I effect by
forming on the bottom edge of the free side a flange turning outwards, to which is
pinned a doubled clip piece teated on its inner surfaces, and designed to grip the
flange before named, and also a second flange turned up from a plate secured to
the top of the lamp case.
My Invention further comprises an arrangement for raising or lowering the
wick of the lamp without opening the case. For this purpose one end of the
spindle, upon which the wick regulator is mounted, is flattened into a chisel shape,
that it may engage in a slot formed in the end of a key, which passes through the
side of the lamp case, and is free to rotate without escaping.
I also make the cases for these lamps in three parts only.
The top, back, and bottom are of one piece, the sides and bridge of another, and
the door of a third.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Burt in the Great Seal Patent Office on the 26th October
1881.
"
GEORGE BURT, of Birmingham, in the County of Warwick, Manufacturer.
IMPROVEMENTS IN LAMPS FOR BICYCLES AND OTHER VELOCIPEDES."
This Invention refers to improvements in suspending, adjusting, and securing
lamps upon bicycles and velocipedes, and in arrangements for raising and lowering
the wick in its holder.
Figure 6, an end view of the same, and
Figure 7, the oil cup and wick holder with the apparatus for raising and
lowering the wick. Similar letters of reference denote similar parts in all the
Drawings.
I will now proceed to describe my improved means of securing the lamp upon
the axle, and of adjusting it to suit any length of axle. For this purpose I form
on the top of the box clip a, by which the lamp is suspended on the axle, a guide b,
in which are placed two free sliding plates c, one of which is shewn separately in
Figures 5 and 6, and both are shewn extended by the dotted lines in Figure 1,
each terminating in a clip d made of metal, and carrying a washer c.
These
washers bear upon the axle against each hub of the wheel, and are maintained at
any requisite distance apart by an adjusting screw f bearing upon the sliding
plates c to which the clips & are attached. The adjusting screw f passes through
the guide b, and is carried by a bracket g on the box clip a; or if preferred the
sliding plates c may be kept in position by means of a rack and spring catch. The
fastening for the box clip a is formed by turning up the bottom edge of the free
or hinged part of the clip into a flange h, to which flange is pinned a double clip
piece teated or roughened on its inner surfaces, and designed to grip the
flange h and also a second flange turned up from the bottom plate of the clip
box a, which bottom plate is secured to the top of the lamp case . My Invention
further comprises an arrangement for raising or lowering the wick of the lamp
without opening the case. This is illustrated in Figure 7, in which m is the wick
holder and n a spindle, upon which it is mounted at the part o. Upon this
spindle is formed a square key, which engages in a socket upon the part p, which
is governed by a spring to keep the two parts o and p together. The part p passes
through bearings in the lamp case 7, and terminates in a milled thumb buttons, by
turning which the wick can be raised or lowered.
I also make the cases for these lamps if preferred in three parts only, the top,
back, and bottom being in one piece, the sides and bridge another, and the door
the third.
.Having thus described the nature of my said Invention, and the manner in
which the same is to be carried into effect, I claim, without limiting myself. to
these precise details,—
Firstly. The improved form of box clip for securing lamps upon bicycles and
velocipedes, and for adjusting the hold to any length of axle, as herein described.

page_text: Secondly. I claim the improved appliances for raising and lowering the wick in
such lamps without opening the case, all substantially as herein more fully set
forth and specified.
In witness whereof, I, the said George Burt, have hereunto set my hand and
seal, this Twenty fourth day of October, in the year of our Lord One
thousand eight hundred and eighty one.