An Improved Gauge for Marking Wind Allowance on Rifle Sights.
Year: 1894

page_text: Date of Application, 29th Jan., 1894
Complete Specification Left, 27th Oct., 1894-Accepted, 1st Dec., 1894
PROVISIONAL SPECIFICATION.
An Improved Gauge for Marking Wind Allowance on Rifle Sights.
We, ALFRED QUINTON and WILLIAM ALFRED QUINTON both of 40, South
End, Croydon, Gunmakers, do hereby declare the nature of this invention to be
as follows:-
This invention relates to improvements in gauges or instruments for use in
marking the elevating bar of a rifle back-sight with the necessary indications for
making wind allowance.
The invention has particularly for its object to enable clean, sharp, white, lines
to be quickly marked on the sight and it comprises two arrangements for producing
the line in different ways, the one by applying paint with a brush to form the line
or by drawing a line with a pencil and the other by blacking the sight at either
side of the line.
For the first mentioned mode of marking the sight the marker or gauge consists
of two parallel bevelled straight edges, set edge to edge with a narrow slit between
them by which the line is determined, the white paint by which the line is formed
being applied with a brush through this slit as through a stencil, or the line may be
drawn with a sharp pointed pencil.
These straight edges are carried by a transversely-sliding bar or plate fitted to
slide upon a guide block adapted to be fixed between the side members of the back-
sight and a vernier scale may be provided on the sliding bar and its guide block,
and a traversing screw working through the guide block may be applied to enable
the adjustment of the bar carrying the knife edges, to be accurately effected or the
adjustment may be performed by directly sliding the bar and securing it by a
binding screw.
When applied to the sight the straight edges stand up across the elevating bar
in close proximity to its face so that by applying a brush charged with color or a
sharp pointed pencil through the slit between them, a clear sharp line may be
readily produced.
The guide block is provided with a lip adapted to engage with the elevating bar
of the sight, so as to admit of the gauge marker being moved sufficiently far from
the face of the bar to enable a fresh adjustment to be made to produce a second
line without defacing the line first made.
For the mode of marking by blacking the sight bar at either side of the intended
line, a single knife edge is carried by the adjustable slide and is set so as to present
its edge against the face of the elevating bar of the sight and preserve a white line
thereon when the surface at either side of the bar is blackened by the smoke of a
match or by means of a pencil.
In other respects the marking gauge is similar to that before described.
Dated this 29th day of January 1894
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.

page_text: An Improved Gauge for Marking Wind Allowance on Rifle Sights.
We, ALFRED QUINTON and WILLIAM ALFRED QUINTON, both of 40, South
End, Croydon, Gunmakers, 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 improvement in gauges for use in marking the
elevating bar of a rifle back-sight with the indications for wind allowance.
The invention has particularly for its object to enable clean, sharp, white lines
to be quickly marked on the sight by applying paint with a brush to form the line.
Figure 1 is a front view; Figure 2 a top edge view; and Figure 3 an end view
of the improved sight marking gauge.
The gauge or marker consists of two parallel knife edge bars a, a, set edge to
edge with a narrow slit 6 between them by which the breadth of the line is
determined, the white paint by which the line is formed being applied with a brush
through this slit as through a stencil. These knife edge bars are carried by a
transversely sliding block c fitted to slide between dovetailed guides d, d, formed
by the top and bottom bars of a frame e adapted to be clamped to the side members f
of the back-sight, a traversing screw 9 working through a nut in the sliding
block e being preferably provided to enable the adjustment of the sliding block to
be accurately effected, this screw being journalled in one end of the frame e and
provided with collars to prevent its longitudinal movement.
When the gauge is applied to the leaf of the rifle sight, the knife edges a, a,
stand up across the elevating bar h in close proximity to its face, so that by
applying a brush charged with colour through the slit ba clear, sharp line may be
readily produced.
The bars a are bevelled on the side next the elevating bar h, as shewn, so that
only their extreme edges which bound the slit 6 can come in contact with the
elevating bar in order that after a line has been marked as above described the
gauge may be at once removed and re-applied in another position for the purpose
of marking other lines without danger of defacing the line first made.
The bars a are bevelled on the outer face to a still greater angle so that their
opposing edges forming the boundaries of the slit 6 will be quite thin or sharp like
knife edges in order to allow the brush charged with paint to pass through freely
and limit the thickness of the layer of paint forming the line. The gauge is fixed
to the leaf of the back sight by means of two lugs i projecting from the back of the
frame e bearing against the one side member of the leaf and a binding screw j
working in a nut on the opposite end of the frame e bearing against the other side
member of the sight. By tilting the gauge slightly forwards at the upper part
upon the screw j as a pivot, the straight edges a may be so far removed as to admit
of being readjusted for marking a second line without danger of defacing the line
already marked.
The mode of marking is well understood, namely, the elevating bar h is first
blackened by the application of a brush charged with black paint or by the smoke
of a match and then, if the bar is blackened by smoke, a pin or other sharp pointed
instrument is drawn through the slit 6 to remove the carbonaceous deposit from the
bar and expose a metallic surface to which paint will adhere and then a brush
charged with white paint is passed along the slit so as to deposit the paint through
it and produce a sharply defined white line upon the elevating bar, corresponding
in breadth and position to the slit b. Accuracy of adjustment is ensured by
providing upon the slide block e a vernier scale m for use in conjunction with a
scale n marked upon the lower bar d of the frame e.

page_text: Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, we would observe that
we are aware that other wind gauge markers for rifle sights have been carried by a
slide block and adjusted by a screw somewhat as herein described, and we do not,
therefore, lay any exclusive claim to such means of adjustment but we declare that
what we claim is :-
1. A gauge for marking a rifle sight by means of a brush in the manner described,
consisting of a pair of laterally adjustable knife edged bars set edge to edge and
separated by a narrow slit, the bars being so bevelled on the side next the sight as
to only touch the latter by their edges, as specified.
2. A gauge for marking a rifle sight, consisting of a pair of knife edged bars
separated by a slit and carried by a slide block fitted to slide in guides in a frame
provided with a screw adjustment and with means of attachment to the leaf of the
Bight, as specified.
Dated this 27th day of October 1894.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.