for Moving the same along Curves and over Rough Roads.
Year: 1885

page_text: for Moving the same along Curves and over Rough Roads.
We WILLIAM HART and JAMES HART both of 48 Clifton Road, Peckham,
Surrey, Engineers, do hereby declare the nature of our said invention for "AN
IMPROVED CONSTRUCTION OR ARRANGEMENT OF TRACTION OR AGRICULTURAL ENGINE
WITH SPECIAL ARRANGEMENT OF WHEELS FOR MOVING THE SAME ALONG CURVES
AND OVER ROUGH ROADS" to be as follows
-
The object of this invention is to so construct the frame of a traction or
agricultural engine that three wheels only need be fitted, two wheels which are on
the same side of the frame being adjustable angularwise to the longitudinal axis of
the frame the one wheel on the other side being of larger diameter and fitted in
immovable bearings for propulsion purposes
We hang the boiler on pedestals and the axles may also form trunnions for the
supply of steam to the cylinders which we arrange under the smoke box end in
advance of the pedestals so as to balance the boiler to enable the fire box end to be
adjusted and the boiler kept horizontally while travelling over uneven road or
land
All the three wheels form bearing wheels and have in connection with their
peripheries sprockets or teeth which engage between the links of endless chains on
which treads or shoes are fitted the chains being guided by rollers which keep them
in such a position but the treads or shoes approach and tread the ground in
advance of the wheels themselves to ensure a flat surface of the chains on which
the peripheries of the wheels run The two wheels on one side of the frame have
their axles supported on horizontal swing bearings to enable the wheels to be
swung either from their own side or from the power wheel side, their inner ends
being connected with the quadrants into which worms on a shaft can gear,
said worms being arranged with their threads in opposite directions so that when
[Pmns 1

page_text: turned by a hand wheel fitted on its shaft the two wheels are thrown at suitable
angles for directing the machine over any given curve or to turn it in a com-
paratively small circle to the right or to the left
By this construction or arrangement the engine above described 18 exceedingly
light, the weight is better balanced, the parts brought readily under control and is
better adapted for rough uneven ground than such engines hitherto constructed
For draught purposes any desired number of wagons can be hauled or ploughs
or other agricultural implements can be attached for cultivating land the engine
going over the land and doing the work as it proceeds.
.

page_text: for Moving the same along Curves and over Rough Roads.
We WILLIAM HART and JAMES HART both of 48 Clifton Road, Peckham,
Surrey, Engineers, 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 the construction of a traction or agricultural engine to
which three wheels only are fitted two wheels being on the one side of the fran
and adjustable angularwise to the longitudinal axis of the frame and with one
wheel on the other side this wheel being of larger diameter and fitted in immovable
bearings for propulsion purposes
The manner of carrying our invention into effect will be understood by the
following description with reference to the annexed drawings
We hang the boiler A on pedestals B, B, at the smoke box end C, the axles
forming trunnions D, D, for pipes E supplying steam to the cylinders F, F which
we arrange under the smoke box end C in advance of or between the pedestals B, B
This enables the fire box end G to be adjusted and the boiler A kept hozontally
while travelling over uneven road oi land
At each side of the fire box end G of the boiler A is a bracket H carrying a
curved rack I the curve being stiuck from the centre of the trunnion In said
rack works a gear wheel or worm J to the spindle K. of which a handle may be
fixed when desired
The boiler may if desired be bolted to the frame in the ordinary manner the
bolts being unfastened when the lifting gear is to be put in operation
All the three wheels L, M, N form bearing wheels and have in connection with
their peripherys sprockets or teeth P, P, which engage between the links of endless
chains Q, Q, on which treads or shoes R, R, are fitted, the chains being guided by
rollers S, S, which keep them in such a position that the treads or shoes R, R
approach and tread the ground in advance of the wheels L, M, N, to present a flat
surface of the chains on which the peripherys of the wheels run. The two
wheels L, M on one side of the frame have their axles T, T, supported on hori-
zontal swing bearings U, U to enable the wheels L, M to be swung either from
their own side (or from the power wheel N side) their inner ends being connected
with quadrants V, V, into which worms W, W, on a shaft X can gear, said
worms W, W, being arranged with their threads in opposite directions so that
when turned by a band wheel Y fitted on its shaft Z the two wheels L, M are
thrown at suitable angles for directing the machine over any given curve or to turn
it in a comparatively small circle to the right or to the left
Figure 1 of the annexed drawings is a side elevation of an engine constructed
according to our invention Figure 2 is a plan with part of the frame and the
smoke box end of the boiler and tank removed to show the wheels L, M, axles T, T,

page_text: and driving shaft Figures 3 and 4 are enlarged plan and part sectional elevation
respectively of a portion of the endless chain QQ
By this construction or arrangement the engine above described is exceedingly
light, the weight is better balanced, the parts brought readily under control and is
better adapted for rough uneven ground than such engines hitherto constructed
For draught purposes any desired number of wagons can be hauled or ploughs
or other agricultural implements can be attiched for cultivating land, the engine
going over the land and doing the work as it proceeds
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed I declare that what
I claim is
The improved arrangement of Traction or Agricultural Engine shown at
Figures 1 and 2 of the annexed drawings, the chief features of which are
a Three wheels with articulated endless rails provided with shoes
b Suspension of boiler for adjustment
The particular formation and connection of rail and shoe, all as herein
described, as shown at Figures 3 and 4