Year: 1889

page_text: We, CHARLES HENRY LAUBENBURG of King Alfred's Place, Broad Street in the
City of Birmingham, Gun Manufacturer, and WILLIAM FIELD of King Edwards
Road in the aforesaid City, Gun Maker, 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 an instrument, or apparatus, called a barrel reflector,
whereby an image of the interior of a barrel, is enabled to be viewed, or inspected,
from the breech end.
Thus, the instrument or apparatus, consists of a cartridge shaped shell, gapped on
its top rear end, under which, a reflector or mirror, placed at or about an angle of
45 degrees, is disposed.
The gap wherethrough an image is viewed, is enclosed or covered up by a rotating
sheath, whilst the said instrument or apparatus, is taken hold of by a loop, or
rearwardly disposed handle
The instrument or apparatus, may be open-fronted, and with a turned-down foot on
its front underside, which takes into the space left between the block and breech end
of a " Martini-Henri rifle" when the breech end is open
Figure 1 of the accompanying drawing, represents upon an enlarged scale, a top side
plan of a gun barrel reflector, constructed and arranged according to our invention.
This said view represents the covering sheath removed.
Figure 2 is an underside view of figure 1, and with the sheath covering up the
aperture or gap, wherethrough an observer views the image of the interior of a
barrel
Figure 3 shows a vertical section of the said instrument, but with the rotating
sheath turned round, whilst figure 4 represents the said sheath in its covering-up
position. Figure 5 is an elevation of the sheath separately. Figure 6 is an elevation
of a "Martini-Henri rifle," with the reflector instrument shown in dotted lines.
Figure 7 shows a plan of an open-fronted instrument, while figure 8 is a side view of
the same.

page_text: The same letters of reference indicate corresponding parts in the several figures.
a is a cartridge shell, provided at its back and closed end, with a reflector or
mirror b, which is disposed at an angle of about 45 degrees to the axis of the
instrument. The cartridge shell is gapped or left open at its rear top side,
wherethrough the image of the interior of a barrel thrown upon the reflector is
вееn.
The gap or opening a², is covered or enclosed by a sheath a³, which has a like gap
cut within it to that of the one within the base end of the shell, as aforesaid; so that
by rotating or bringing the uncut-away part of the sheath upon the top side of the
shell, the reflector is protected from injury, or from dirt
The returning of the said sheath to its former position, brings its gapped part, and
that of the gap of the case coincident as in figure 3, and which motion is limited by a
pin or stop a, against which the shoulders a of the said sheath respectively come, on
the opening and closing up of the mirror. The gap within the sheath is marked a*,
and the means for taking hold of the instrument is marked a², and further, the outer
circumference of the instrument is made flush with the gapped sheath, by a
supplementary fixed ring or sheath a³
In using the instrument, first uncover the mirror, and then place the said instru-
ment in the breech end of the barrel, when the image of the interior of the said
barrel, will be thrown upon the mirroi, which can then be observed vertically through
the gap in the top of the instrument
In the open fronted modification figures 7 and 8, a is the base of the cartridge,
a the open front, a' the looped handle, alo a foot or underweb, which takes within the
base between the front of the block, and the breech end of a "Martini Henri " rifle,
and b is a reflector or mirror, disposed at an angle of about 45 degrees in the interior
back end of the said open fronted instrument.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
:-
First Making the hollow body of a barrel reflector from out of, or of the form
of a cartridge shell or case, substantially as described and set forth in figures 1, 2
and 3.
Secondly; Providing gun barrel reflectors with a rotating or turning sheath, or
gapped sleeve, as set forth in figures 1, 2, 3, 4 and 5.
Thirdly; The construction and arrangement of the parts of gun barrel reflectors,
as herein described and set forth in figures 1, 2, 3 and 4.
Fourthly Making gun barrel reflectors open-fronted, or from the base end of a
cartridge shell, or from a shell of a like construction, as herein described and set forth
in figures 7 and 8
Lastly; Providing the front undersides of gun barrel reflectors, with a foot a¹º,
for the purpose as set forth in figures 7 and 8.
Dated this 2nd day of May 1889