Year: 1896

page_text: Date of Application, 19th Dec.. 1895-Accepted, 27th Mar., 1897
Fig. 2 is a front view.
Fig. 3 is a plan.
Figs. 4, 5, 6 are representations in vertical projection and in horizontal
projection of the diagram of the movement (the wheel E undergoing a revolution
of 90°).
The reference letters indicate the same objects in the different figures.
A is a boiler of any form. B is the tender carrying the water and the coal box.
CC are compressing rollers. D D' are driving and steering wheels.
In order to construct a roller with equal pressure per centimeter of generator and
to avoid the ridge of the stones to be pressed which ridge is formed before the
pressing rollers on a road to be metalled and in order to avoid the sliding which is
the primordial cause thereof at the moment of the starting, I render all the wheels
driving and directing in order to secure a good steering.
DESCRIPTION OF THE MOVEMENT.
Combined pulley. This system is composed of a wheel crown E and of an
intermediary crown F. The wheel crown E receives direct the movement from
the driving shaft H by means of chains K the two wheels I and a pinion F.
The crown E is maintained in direction by means of a frame G. In order to
diminish as much as possible the friction of this crown in its frame, there are
placed against the cheeks of the frame three equidistant friction rollers m m² m².
Diametrically opposite each other there are placed in the crown E two pins nn¹
fixed either in the crown E or in the intermediary crown F. In this crown F which
can oscillate round the pins n n¹ are bored diametrically opposite each other and
perpendicularly to the line of the two first pins two holes into which are introduced
fixed or movable two other pins p p.
Thus the intermediary crown has two pins fixed and engages two others movably.
Upon the driving shaft M and conjointly with the same is arranged in its middle
a sphere S in which are bored two holes to receive the pins p pl of the intermediary
crown, allowing the whole system to oscillate round the pin p p and in a plane
perpendicular to that determined by the pins n n².

page_text: Figs. 4, 5, 6 show the diagram of the movement and the intermediary position
occupied by the crown F.
1st case Fig. 4. The pins p¹ being vertical and the two others n n' horizontal,
the intermediary crown is the same plane as the fixed boss (in direction).
2nd case Fig. 5. The pins p p' and n n are inclined at 45° upon the driving
axle; the intermediary crown makes with the crown F an angle equal to the
angle formed by the plane of the crown E and the plane determined by the 4 arms
placed in this direction (the angle growing with the augmentation of the angle
of deviation of the shaft from its normal position).
3rd case Fig. 6. The pins n n¹ are vertical and pins p p' are horizontal.
The intermediary crewn F makes with the crown E an angle equal to the angle
of deviation of the driving shaft from its normal position (when the axles are
parallel).
The same movement is again produced for the other phases, completing one
revolution of the crown E: in contrary sense for the second and fourth quadrants,
in the same sense as for the third quadrant.
The large wheels are placed at such a distance from the back roller, that the
whole system can turn under at. a minimum radius of curvation of say 6 metres.
The dotted lines indicate the position of the front wheels for this curvature.
The driving axle of the front wheels is maintained invariably at a fixed distance
(as to its centre) from the back rollers by means of a fork P turnable in a bearing
connected with the boiler.
Two sectors L form plates bearing on the front axle bearings. The wheels
keyed upon the axle or equivalent parts are connected by differential movement in
order to avoid sliding when turning a curve and are operated by the axle turning
in the bearings of the arm P.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
An improved system of transmission allowing of making at the same time
driving and directing the wheels of any automotive vehicle, especially steam rollers,
but also applicable for any machines or apparatus, and characterized by :-
(1) Two concentric rings or crowne maintained the one upon the other by means
of pins perpendicular to each other and a sphere or boss conjointly with the axle
or shaft of the wheels, the whole being arranged in order to subject the pins to
shearing strain only by diminishing their length the exterior ring or crown being
fixed in direction, the intermediary crown complying with the rotary movements,
and the shaft adapted to deviate at any angle.
(2) The construction of the sphere on the front shaft so that it is striated
in the form of a toothed wheel operated directly by means of tangent wheels.
(3) An arrangement giving directly movement to the wheels by means of pins or
power arms carrying movable spheres.
(4) A steam roller having gear as aforesaid and in which the rollers are so
proportioned as to give equal pressures per centimeter of generator.
(5) In a steam roller to combination of the driving gear herein described with
a differential movement for the two wheels driven thereby.
Dated this 19th day of December 1896.
HERBERT HADDAN & Co.,
18, Buckingham Street, Strand, London, Agents to Applicant.