Improvements in Sorapers for Road Roller and other Wheels.
Year: 1892

page_text: Date of Application, 31st Mar., 1892
Complete Specification Left 29th Dec. 1892-Accented. 18th Feb. 1893
PROVISIONAL SPECIFICATION.
Improvements in Sorapers for Road Roller and other Wheels.
I, THOMAS LAKE AVELING of Rochester in the County of Kent, Engineer,
do hereby declare the nature of this invention to be as follows:-
The scraper blade is carried by rods pivotted to a fixed axis parallel to the
surface of the roller. "The attachment of the scraping blade to the rods is adjustable
to provide for the wear of the blade. Fixed to the rods is a cross bar supporting a
cylinder containing a spring and a piston pressing upon the spring. The piston rod
is pivotted to the fixed axis and carries two projections one on each side which bear
against abutments fixed upon the axis. These abutments can be turned upon the axis
and secured in any position and are so adjusted as to cause the piston to slightly
compress the spring making it in its turn press the scraping blade against the roller.
With this arrangement if a stone or other impediment gets between the scraping
blade and the roller the former can give way by turning about the axis compressing
the spring which brings it back again when the stone has passed through.
Dated this 31st day of March 1892.
THOMAS LAKE AVELING.
COMPLETE SPECIFICATION.
Improvements in Scrapers for Road Roller and other Wheels,
I, THOMAS LAKE AVELING, of Rochester in the County of Kent, Engineer, 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:
Figures 1 and 1 are respectively. a side elevation and plan of a wheel or roller
having a pair of scrapers fitted to it.
Figure 2 is a plan of the scraper and Figure 3 is a section on the line xx
Figure 2.
The scraper blade a is carried by rods 6 pivotted to a fixed axis e parallel to the
surface of the roller. This axis is fixed in any convenient manner to the frame.
The attachment of the scraping blade a to the rods b is adjustable to provide for the
wear of the blade. Fixed to the rods is a cross bar d supporting a cylinder e
containing a spring and a piston g pressing upon the spring. The piston carries
two projections g' gone on each side which bear against abutments h fixed upon
axis c.
These abutments can be turned upon the axis and secured by screws j in
any position and are so adjusted as to cause the piston y to slightly compress the
spring making it in its turn press the scraping blade a against the roller."
the
With this arrangement if a stone or other impediment gets between the scraping
blade and the roller the former can give way by turning about the axis compressing
the spring which brings it back again when the stone has passed through.
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 combination of an axis, a projection upon the axis, a scraping blade free
to turn about the axis, a rod turning with the scraping blade but free to move radially
to the axis, a projection upon the rod bearing upon the projection on the axis and a
spring carried by the scraping blade and bearing on the radial rod.
2. The combination of an axis, a pair of projections upon the axis, a scraping
Pain 1

page_text: blade free to turn about the axis, a rod turning with the scraping blade but free to
move radially to the axis, a pair of projections upon the rod bearing upon the
projections upon the axis and a spring carried by the scraping blade and bearing on
the radial rod.
3. The combination of an axis, a pair of projections upon the axis, a scraping
blade free to turn about the axis, a cylinder carried by the scraping blade, a spring
in the cylinder, a piston also in the cylinder and bearing upon the spring, and a pair
of projections carried by the piston and bearing upon the projections on the axis.
4. Scrapers for road roller and other wheels substantially as described and shown
in the drawings.
Dated this 23rd day of December 1892.
T. L. AVELING.