Improvements in Steam Road Rollers.
Year: 1893

page_text: Date of Application, 9th Jan., 1893
Complete Specification Left, 6th Oct., 1893-Accepted, 25th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in Steam Road Rollers.
We, JAMES GRAHAM ALLEN and JOHN ALLEN of the Firm of J. G. Allen
& Co. of Comber, Co. Down, Ireland, Steam Roller Proprietors, do hereby
declare the nature of this invention to be as follows:-
When making and repairing roads it is usual to employ steam rollers to
consolidate the materials such as broken stone and binding matter such as sand and
water of which the road is made; and it is usual by manual labour to distribute
the "binding" over the broken stone and to sweep it with brooms into the crevices
between the stones.
The object of our invention is to dispense with much of this manual labour and
this we do by mounting upon the steam roller a brush of cylindrical form to follow
behind the rolls. This brush is mounted upon an horizontal axis driven from the
main axle by a pitch chain and chain wheels and other interposed gear such as to
admit of the axis of the brush being inclined to the axle so that brush may sweep
the "binding" somewhat to one side or the other of the track and thereby produce
a more even distribution of the "binding" at the same time that it is forced into
the interstices of the road bed.
We sometimes mount the brush in a pivotted frame which can rise and fall in
passing irregularities of the road. The frame can also be lifted to remove the
brush out of contact with the road surface when it is not required for use.
Sometimes we mount the axis of the brush in a forked frame with a vertical
stem which can be turned round in its bearings to alter the inclination of the
brush to the track so that the "binding" may be swept to one side or the other
and more or less obliquely to the track as may be necessary to obtain an equal
distribution.
The stem of the fork carrying the brush can also rise and fall in its bearings to
avoid undué pressure of the brush upon the road surface. When not required for
use the forked frame with the brush may be drawn up out of the way.
Gear is provided by which the driver can control the inclination and movements
of the brush whilst the roller is travelling.
Dated this 9th day of January 1893.
CARPMAEL & Co.,
Agents.
COMPLETE SPECIFICATION.
Improvements in Steam Road Rollers.
We, JAMES GRAHAM ALLEN, and JOHN ALLEN, of the Firm of J. G. Allen
& Co., of Comber, Co. Down, Ireland, Steam Roller Proprietors, 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 --
When making and repairing roads it is usual to employ steam rollers to
consolidate the materials such as broken stone and binding matter such as sand and
water of which the road is made, and it is usual by manual labour to distribute the
binding over the broken stone and to sweep it with brooms into the crevices
between the stones.
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The object of our invention is to dispense with much of this manual labour and
this we do in the manner indicated by the annexed drawings.

page_text: DESCRIPTION OF THE DRAWINGS.
Figure 1 is an end elevation of as much of a steam road roller as will shew the
application of our invention.
Figure 2 is a side elevation of Figure 1.
Similar letters of reference designate like parts in both the figures.
A is a framing bolted to the tank of the steam roller, to this framing brackets B B¹
are fixed which support the axle or pivot C. which carries the brush frame D. On
this axle or pivot a bevel wheel E having a socket E attached to it is free to
rotate but is held in position by means of the bracket F. The upper end of the
socket E passes through the boss of bevel wheel G; in this bevel wheel Ga
feather key is fixed and a corresponding slot or key way is provided in the pivot or
axle C. The bevel wheel G gears into the bevel wheel H which is fast to the
cross shaft L; this cross shaft .which is carried by the bracket M and is free to
rotate has a chain wheel N fixed to the other end. The chain wheel N is driven
by means of the pitched chain O and chain pulley P fixed to the axle of the rolls
or other rotating part.
The bevel wheel E gears into the bevel wheel Q which is fast to the cross shaft R
on the opposite end of which a spur wheel S is fixed gearing into a spur wheel T
carried on a cross shaft T. On the boss of wheel T a chain wheel V is fixed
gearing by means of a pitched chain W into the chain wheel X which is fixed to
the same axle as that of the cylindrical brush Z. Thus rotary motion is transmitted
to the brush.
The axle of the brush Z is carried by means of a pivotted bush bearing 1 working
in the sleeve 2 which swings on the cross shaft T¹. The pivotted end which works
in the sleeve 2 has a groove 3 cut in its circumference a pin which passes through
the sleeve and engages with this groove 3 allows the pivot to turn on its axis but at
the same time preventing end movement.
To the sleeve 2 a chain 4 is attached the other end of which is fixed to the chain
pulley 5, this chain pulley being fixed to the boss of a lever 6. The chain pulley
and lever are loosely fitted to a cross shaft 7 which is fixed so that it cannot rotate;
to this cross shaft a ratchet wheel 8 is keyed and to the lever 6 a pawl 9 is swung,
in such a manner that when the lever is pulled in the direction of the arrow, the
chain pulley moves with it and thus lifts. the brush Z clear of the ground.
The top end of the pivot or axle C is screwed and passes through the boss of the
hand wheel 10 which forms a nut and is kept in its place by means of the bracket B,
so that when the hand wheel is turned the pivot C and with it the brush frame D
and parts attached thereto are either raised or depressed according to the way the
hand wheel is turned.
The lever 11 is fixed to the pivot C in such a manner that when the lever or
handle 11 is moved the pivot C and with it the brush frame D and parts attached
thereto is caused to move and may be set to any required angle or obliquity to the
track.
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 :-
1. The general arrangement and combination of parts or any mere modification
of the same substantially as herein set forth and illustrated in the accompanying
drawings.
2. The combination substantially as described with a steam road roller of a
rotary brush capable of being driven by the engine and of being set obliquely to
the rolls and of being raised and lowered as required.
Dated this 15th day of September 1803
J. G. ALLEN..
JOHN ALLEN.