Improvements in Means or Apparatus Employed in Trimming Lamp Wicks.
Year: 1887

page_text: Date of Application, 12th Mar., 1887
Complete Left, 12th Dec., 1887
Complete Accepted, 13th Jan., 1888
PROVISIONAL SPECIFICATION.
Improvements in Means or Apparatus Employed in Trimming
Lamp Wicks.
I, WILLIAM HENRY MORRISON of Ellersleigh, Prospect. Road, Moseley, Birmingham,
in the County of Warwick Manager, do hereby declare the nature of this invention
to be as follows:-
In carrying my present invention into effect I according to one arrangement
construet wick trimming apparatus of sheet metal and I provide it with a central
guide to fit loosely either the wick tube or the support carrying the deflecting button.
I also form such apparatus with one or more cutters by cutting and depressing one
or more portions of the sheet metal so that the cutting edge or cutting edges shall
stand clear of the other portions of the apparatus and therefore be capable of acting
efficiently on the wick. 1, also, according to my invention prefer to make such
cutiers in iangential lines, which may be either straight or curved by these means.
when trimming lamp wicks, which is effected by rotating the apparatus the cutters
will act to push or throw the disconnected charred portions of the wick outwards and
thereby prevent their falling down the wick tube or being pushed down on to the
top of the wick.
Instead of forming the wick trimmer of sheet metal it may be formed with a
central rod or shaft provided with solid projecting cutter arms and formed at its
lower end loosely to fit the wick tube or the support for the deflecting button the
cutiers are formed at the lower leading edges of the arms and the body of the latter
on the underside thereof and, also preferably on the upper side is sloped upwards
away from the cutting edges.
The cutting edges are, as in the former arrangement preferably formed in tangential
straight or curved lines.
If desired the central rod or shaft may be dispensed with, in which case the cutter
arms will be provided with guides to retain the trimmer in position on the wick tube
whilst in use.
Dated ibis 15th day of Nonch 1087
W. H. MORRISON.
By Harris & Mills,
23, Southampton Buildings,
Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Means or Apparatus Employed in Trimming
Lamp Wicks.
1. WILLIAM HENRY MORRISON of Ellersleigh, Prospect Road, Moseley, Birmingham,
in the County of Warwick, Manager, 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:-
In carrying my present invention into effect I according to one arrangement.
construct wick trimming apparatus of sheet metal and I provide it with a central
guide to fii loosely either the wick tube or the support carrying the deflecting button,
I also form such apparatus with one or more cutters by cutting and depressing one or
more portions of the sheet metal so that the cutting edge or cutting edges shall stand
clear of the other portions of the apparatus and therefore be capable of acting
efficiently on the wick. I also according to my invention prefer to make such cutters
in tangential lines, which may be either straight or curved; by these means, when
trimming lamp wicks, which is effected by rotating the apparatus, the cutters will act
to push or throw the disconnected charred portions of the wick outwards and thereby
prevent their falling down the wick tube or being pushed down on to the top of
the wick.
Instead of forming the wick trimmer of sheet metal it may be formed with a central
rod or shaft provided with solid projecting cutter arms and formed at its lower end
loosely to fit the wick tube or the support for the deflecting button; the cutters are
formed at the lower leading edges of the arms and the body of the latter, on the under-
side thereof, and also, preferably on the upper side, is sloped upwards away from the
cutting edges.
The cutting edges are, as in the former arrangement, preferably formed in tangential
straight or curved lines.
If desired the central rod or shafi may be dispensed with, in which case the cutter
arms will be provided with guides to retain the trimmer in position on the wick tube
whilst in use.
And in order that the said invention may be more clearly understood and readily
carried into effect, I will proceed aided by the accompanying drawings, more fully to
describe the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1 represents a side view partly in section, illustrating an apparatus constructed
of sheet metal according to one form of my invention and placed in position for use
upon the wick tube of a circular or Argand burner; and Figures 2 and 3 represent
respectively a side view and a plan thereof separately.
Figure represents a side view of a modified form of apparatus also formed of sheet.
metal and placed in position for use and Figure 5 represents a plan thereot
separately.

page_text: Figures 6 and 7 represent respectively a side view and a plan of a form of apparatus
somewhat similar to that represented at Figures 4 and 5 but constructed of cast metal
and figure 8 represents a side view and figure 9 an underside view of two further
modified forms thereof.
Similar letters indicate corresponding parts in all the figures.
According to the construction represented a Figures 1, 2 and 31 form the wick
trimming apparatus of sheet metal and I provide it with a central guide or boss a,
formed at its base, to fit loosely the wick tube to steady it when in use.
I also construct such apparatus with one or more cutter arms a formed by cutting
the sheet metal upon the lines a², a³, and depressing, and if necessary, bevelling, the
cutting edge or edges as of the cutter arms a¹ so that such cutting edge or edges shall
stand below and clear of the other portions of the apparatus and therefore be capable
of acting efficiently upon the wick.
The central guide or boss is formed with a groove or channel a to receive the
cutter arms a¹ and in which they are secured by means of solder or otherwise or the
cutter arms a' may be otherwise secured to the central boss or guide a and such
central boss or guide a is provided at its upper part with a milled edge by the aid of
which it may be readily revolved.
According to the construction represented at Figures 4 and 5 the apparatus is
formed of sheet metal in a somewhat similar manner to that described with respect to
the previous figures but in this case the central guide or boss a is formed to fit the
support carrying the usual deflecting button which support acts as a centre around
which the apparatus may be revolved and the cutter arms a¹ are fixed to the central
guide or boss a by soldering or brazing.
It will be understood that by modifying the form of the central boss or guide a I
may readily form the apparatus by stamping a single piece of sheet metal into the
required shape.
According to the construction represented at Figures 6 and 7 the cutter arms a
and the cutting edges a' and other parts are of approximately the same form as that
described with respect to figures 4 and 5, but instead of being formed of sheet metal
the apparatus is, in this example cast to the required shape and the central boss or
guide a is either cast in one with the cutter armis a' or is formed separately therefrom
and soldered or brazed thereto.
The cutting edges a³ in this case are also formed at the lower leading edges of the
cutter arms a and the body of the latter on the underside and also preferably on the
upper side thereof is sloped upwards away from the cutting edges a.
The apparatus represented at Figure S is very similar to that represented at
Figures 6 and 7 being formed entirely by casting but in this case a short boss or
guide a is employed to loosely fit the wick tube band retain the apparatus in position
in a similar manner to that represented with respect to Figures 1, 2 and 3.
In the construction of wick trimmer an underside view of which is represented at
Figure 9 the central guide or boss a is dispensed with and three short studs or
projections a spaced to fit within the wick tube are employed in lieu thereof; in
other respects the apparatus is similar to that shown and described with respect to
Figure S.
The cutting edge or edges as I form preferably in tangential lines which may be
either straight as shown or curved by which means when the apparatus is revolved in
order to trim the lamp wick such cutting edges a will act to push or throw the dis-
connected charred portions of the wick outwards and thus prevent their falling down
the wick tube b or being pushed down on to the top of the wick.
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. A wick trimmer constructed of sheet or cast metal in manner substantially as
herein shown and described and for the purpose stated.
2. A wick trimmer constructed of sheet metal and formed with central boss or

page_text: guide a, culter arm or arms a', and tangential straight or curved depressed cutiing
edge or edges a in manner substantially as herein shown and described and for the
purpose stated.
wick trimmer constructed of cast metal and formed with a central boss or
guide a, sloped cutter arm or arms a' and tangential straight or curved cutting edge
or edges a³, in manner substantially as herein shown and described and for the
purpose stated.
Datal hi 131
100-