IMPROVEMENTS IN APPARATUS FOR. MARKING GROUND FOR LAWN TENNIS AND FOR OTHER PURPOSES "
Year: 1882

page_text: LETTERS PATENT to Thomas Green of the Smithfield Ironworks, Leeds in the
County of York for an invention of "IMPROVEMENTS IN APPARATUS FOR.
MARKING GROUND FOR LAWN TENNIS AND FOR OTHER PURPOSES
""
PROVISIONAL SPECIFICATION left by the said Thomas Green at the Office
of the Commissioners of Patents on the 22nd May 1882.
THOMAS GREEN of the Smithfield Ironworks, Leeds in the County of York
"IMPROVEMENTS IN APPARATUS FOR MARKING GROUND FOR LAWN TENNIS AND
FOR OTHER PURPOSES
"
This Invention has for its object improvements in apparatus for marking ground
for lawn tennis and for other purposes.
For these purposes I provide a tank to contain whiting or pigment mixed with
water; the tank is carried by an axle and a pair of wheels, the axle passing
through the tank. In front of the tank there is a third wheel running upon the
ground and this is the marking wheel. I also mount upon the axle within the
tank a disc having hollows in its periphery. These as the disc revolves in the
forward movement of the apparatus, take up the mixture of pigment and water,
and carry it over the axle. On the descending side of the disc the mixture is
poured from the hollows on to the ascending side of the marking wheel. By this
means the mixture of pigment and water can be more effectually applied to the
periphery of the marking wheel than by simply allowing it to run from a tank by
a tap on to the periphery of the marking wheel; as in lawn tennis markers formerly
in use.
Instead of the disc with hollows or cups in its periphery pouring the mixture on
to the marking wheel a circular brush upon the axle may be employed.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Thomas Green in the Great Seal Patent Office on the 21st November
1882.
THOMAS GREEN of the Smithfield Ironworks, Leeds in the County of York
"IMPROVEMENTS IN APPARATUS FOR MARKING GROUND FOR LAWN TENNIS AND
FOR OTHER PURPOSES
"
This Invention has for its object improvements in apparatus for marking
ground for lawn tennis and for other purposes. For these purposes I provide a

page_text: tank to contain whiting or pigment mixed with water-the tank is carried by a
pair of wheels. In front of the tank there is a third wheel running upon the
ground and this is the marking wheel. I also mount within the tank a disc or
wheel which at one point of its periphery comes in close proximity to but not into
absolute contact with the periphery of the marking wheel-and I give to the disc
or wheel which is within the tank a revolving motion so that its periphery shall
carry up liquid from the tank and pour it on to the periphery of the marking
wheel I drive the disc or wheel by an endless chain or band from the axis of the
marking wheel in this way the machine may be tilted and wheeled along with the
marking wheel lifted off the ground and the supply of liquid to the marking wheel
will then be stopped. A modification of the arrangement is to do away with the
disc or wheel within the tank and to allow a portion of the periphery of the
marking wheel to pass into the tank containing the liquid.
The Drawings hereunto annexed shew apparatus constructed according to my
invention.
Figure 1 shews a side view Figure 2 a longitudinal vertical section and Figure 3
a plan view of one form of my apparatus.
A is a tank-B its supporting wheels. Cits handles by which the apparatus is
pushed forwards, D the marking wheel. E the wheel within the tank and F an
endless chain by which the wheel E is made to revolve with the wheel D so that
the surfaces of the wheels which approach one another are moving in opposite
directions and the liquid carried up by the periphery of the wheel E pours on to
the periphery of the marking wheel D.
Figure 4 shews a side view. Figure 5 a longitudinal vertical section and
Figure 6 a plan view of a modified form of the apparatus, the parts are marked
with the same letters of reference as in Figures 1. 2 and 3. It will be seen that the
tank is continued along either side of the marking wheel, D.
Figure 7 shews a side view. Figure 8 a longitudinal vertical section and
Figure 9 a plan view of a similar apparatus but with the wheel E done away
with and the liquid in the tank allowed to come into direct contact with the
periphery of the marking wheel D so that the wheel D serves the two purposes of
lifting the liquid from the tank and of applying it to the surface of the ground.
By means of the handles the box or tank can be tilted back so that the liquid falls
to the hinder part of it and the marking wheel is lifted off the ground.
One advantage of this construction of the apparatus is that the liquid can be
mixed at any time as the top of the box is entirely open.
Having thus described my Invention I would have it understood that I claim
the construction substantially in the ways herein before described and illustrated
in the Drawings annexed of apparatus for marking ground for lawn tennis and for
other purposes.
In witness whereof I the said Thomas Green have hereunto set my hand
and seal this Twentieth day of November in the year of our Lord One