Improvements in Cricket Stumps.
Year: 1898

page_text: Date of Application, 30th Aug., 1898-Accepted, 17th Dec., 1898
COMPLETE SPECIFICATION.
Improvements in Cricket Stumps.
I, ARTHUR TERTIUS ROBERTSON, of Traversdale, Forbes, in the Colony of New
South Wales, Australia, Grazier, 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:
My said invention consists in the mode of constructing a spring clip to take
hold of a projecting stud or nipple so as to admit of a cricket stump, divided
into two parts, being successfully brought into use. The stump is divided so
that the spikes or part entering the ground remains fixed during the progress
of the game, being separated from the shank or upper portion of the stump
which stands above the ground. The two parts are connected and held together
by the spring and stud so that when the spike is driven into the ground the
upper part is held firmly in a vertical position when the wicket is fixed, but is
released, and can fall in any direction when struck by the ball.
There are two modes in which my invention can be applied. One by having
the stud screwed to the bottom of the stump, the spring clip being" screwed
into a hollow metal spike. Or, my spring clip may be fixed in manner herein-
after described in a socket attached to lower part of stump, the stud being
affixed to any suitable spike.
The construction of a stump in two parts admits of the portions of the stumps
in the wicket, representing the spikes, being fixed into a bed plate so that the
stumps are always found to be at the regulation distance; or if spring clips,
the subject of my invention, are fixed at the lower portions of the stumps, such
bed plate may be constructed with spikes fixed into the underneath portion
thereof to keep it fixed firmly in the ground, and the studs upon which the
springs operate can be affixed to the bed plate, with a like result.
In carrying out my invention the spring clip is mounted on a special form
of casting and is formed preferably of three steel springs recessed into the inner
end of the casting and secured by screws. The outer or clip end of the springs
are turned at right angles to the main portion, so as to engage and take hold
of the stud or nipple, which is made of hardened steel. The spring clip casting
has a thread cut on it, which screws into a corresponding thread, either in a
hollow metal spike, or into a socket fixed at the end of the stump, as the case
may be. If the spring clip is screwed into the spike, the stud or nipple will be
secured at the end of the stump. If the spring clip is inserted in a socket at
the end of the stump, the stud will be fixed in the top of the spike by any
suitable means.
I have more particularly illustrated my invention in the accompanying sheet
of drawings. In Figures 1, 2, 3, and again in Figures 4 and 5, the same letters
shew the like parts.
One method is shewn in Figures 1, 2, and 3.
Figure 1
mantical coation through stumn and anilen

page_text: Figure 2 a cross section and Figure 3 a plan shewing top of spike
with spike removed.
A is the wooden end of stamp, B metal strengthening plate, C screw for
securing same to stump, D is the steel stud or nipple. E is the special formed
casting which carries the steel springs H forming the clip. J is a screw for
securing springs in recesses formed on end of special casting. G is the hollow
metal spike into which special casting is screwed.
The other method of using my invention is shewn in Figures 4, and 5.
Figure 4 is a vertical section through stump and spike.
Figure 5 a cross section through lower end of stump at ry.
a shews lower end of wood stump. 9 specially formed casting to which the
steel springs k, forming the clip are screwed where recessed by the screw h, and b
is a projecting steady pin which fits into corresponding recess in wood stump.
d is a metal socket secured to end of stump by pins e with screw on inside to
fit corresponding thread on outside of special clip casting, by which it is held
in place m is a metal spike n metal cap which screws into it and has steel stud
or nipple secured to centre of same.
The spike may be otherwise constructed in any suitable way and the stud
secured thereto by any efficient means.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
(1) The spring clip hereinbefore described, for use in the construction in two
parts of a cricket stump.
(2) The spring clip hereinbefore described in combination with a stud or
nipple, for use in the construction in two parts of a cricket stump.
Dated the 30th day of August 1898.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.