Year: 1888

page_text: Date of Application, 4th June, 1888
Complete Specification Left, 2nd Mar, 1889
Complete Specification Accepted, 4th May, 1889
I ABRAHAM WADDINGTON of 3 Midland Terrace, Bath Road, Holbeck near Leeds in
the County of York Engineer, do hereby declare the nature of this invention to be as
follows
-
The object of my Invention is to impart a vertical or up and down motion to the
seats of roundabouts simultaneously with the circular or round-about motion of such
seats
For this purpose I arrange the track or rails on which the wheels carrying the sents
run, with suitable inclines, so that the seats as they pass over these inclines rise and
tall in succession The circular or roundabout motion is imparted to the seats from i
central rotating vertical axis by means of rods or links attached at one end to the seits
and at the other end to the rotating axis As will be evident if the end of the connecting
rod or link attached to the rotating axis is considerably higher than the level at which
the other end is attached to the seat, then whenever the seat rises up one of the
inclines, the downward inclination of the connecting rod or link will gradually
diminish, and consequently the end of such rod or link where it is attached to the
carriage or seat will be gradually pushed further away from the central vertical
rotating axis And similarly as the car carrying the seat, descends the incline, the
seat or car will be gradually drawn nearer to the central vertical rotating axle, so
that at the bottom of the incline the cars will be in their nearest position to, and at
the top of the incline at their furtherest position from, the central rotating axle If the
track or line of rails therefore, were laid perfectly circular with the rotating axis as a
centre, the cars or seats would be tilted inwards or outwards or in both directions
according to the radius at which they are laid, and the length of the connecting rod or
link By carrying the cars on a single central rail and attaching the upper part of
the seat or car to the central rotating axle by a connecting rod at each end of the
car, the seat will in addition to the roundabout motion, have imparted to it, both an
up and down motion and also a swaying motion from side to side Such combined
motion would produce a very effective imitation of the rolling of boat at sea, and
the cars might take the form of boats

page_text: When however it is desired to avoid such side rocking motion, and still to allow of
the varying distance of the end of the connecting rod or link attached to the car, from
the vertical rotating aale, I lay the track or rails so as to deviate from a true circular
shape at exactly corresponding varying distinces Thus if there are only one or two
up and down inclines, the ti ick will be slightly elliptical or ovil, if there are several
such inclines, the track will have as many sinuous deviations from the true circular
shape
In order to ensure that the cars shall keep the track I provide horizontal or vertical
guide wheels with or without flanges, to catch beneath the lip or angle of the rails
The supporting or carrying wheels also may be with or without flanges
It will be understood that I do not limit invself to any form or device of seats, which
may be arranged to represent boats, horses, carriages etc as desired, nor do I limit
my self to any mode of imparting the rotary motion to the roundabout"
L

page_text: I ABRAHAM WADDINGTON of 3 Midland Terrace Bath Road, Holbeck near Leeds
in the County of York 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
The object of my Invention is to impart a vertical or up and down motion, (with or
without a simultaneous oscillation or side to side motion), to the seats of roundabouts,
simultaneously with the circular or roundabout motion of such seats, and refers more
especially to the means for effecting these motions in combination
The vertical up and down motion is effected as usually the case, by arranging the
trick or rails on which the wheels carrying the seats run, with suitable inclines, so
that the seats is they pass over these inclines rise and fill in succession The circular
or roundabout motion is imparted to the seats from a cheese wheel, mounted at the
upper end of a central rotating vertical axis, by means of rods attached at their inner
As will be
ends to the cheese wheel and extending radially to the cars or seats
evident, if the inner end of e ich radial rod be hinged to the cheese wheel, so as to be capable
of altering its inclination as the corresponding car rises and falls over the inclines of the
circular track, and if the outer end of the rod be fixed to the car, so that the length of
the rol is constant, then the car will be pulled in and pushed out to and from the
centre of the track twice during each complete motion round the trach, supposing that
the before mentioned cheese wheel is higher than the highest part of the inclines
and four times if the cheese wheel is about midway in height between the bottom and
top of the inclines, where the track has two complete undulations
Now the first part of my Invention relates to the application of the variation in the
inclination of the radial rods, and also of the variation in the horizontal distance of
the outer ends of the radial rods from the centre of the track, for producing a side
oscillation of the cars on a perfectly or approximately circular trick
Although I have in my provisional specification referred more especially to such an
arrangement with the wheels of the cars running on a single rail circular track, I find
that such an arrangement is not so safe as when a double track or line of rails is used
and I shall therefore describe this as other parts of my Invention with reference to a
double track or line of rails
"
Fig 1 is a cross view or section of a car so arranged, that the variation of the inclina-
tion of the radial rod imparts a side oscillation to the car The car a is attached rigidly
to the end of the radial rod 6, the connection being preferably so arranged that the
angular side oscillation of the car to each side of the upright position is equal, each of the
angles c d e and edf being equal to half the angle of variation of the inclination of
the rod b The track itself may be laid with a corresponding varying cross inclina-
tion, ze the inner rail alternately higher and lower than the outer rail, I prefer
however to keep both rails at equal heights, and consequently the carriage carrrying
the car in a horizontal position, and to connect the car to the carriage or frame by

page_text: means of a hinge or swing joint g To allow for the varying distance of the outer
end of the radi il rod from the centre of the track, the track being supposed to be
circulu, I either arrange the pedestal of the hinge, so as to be capable of sliding side-
ways in guides provided on the carriage frame, or mount the pedestal on a swinging
parallel motion, or lastly arrange that the end of the rod passes through, capable of
sliding in, a hollow boss h attached rigidly to the car, but mounted in bearings g so as
to swivel on the carriage frame z see Fig 1
Fig 2 shews a cross view or section of a car, so arranged that the variation in the
horizontal distance of the outer end of the radial rod imparts a side oscillation to the
car The car a is mounted on brackets hinged to the carriage frame, and the outer
end of the radial rod b is attached by a pin joint d to the side of the car or to the
bracket Two rods bare preferably thus attached to the car When the car a is at
the top of one of the inclines, the radial rod b is in its position most nearly horizontal,
and the outer end of the radial rod b furthest away from the centre of the track, so that
the car is tilted towards the outside as shewn in Fig 2 When the car is at the
bottom of an incline, it will be tilted inwards, the radial rod being in its most inclined
position, and the outer end of the same nearest the centre of the trick
By any of the above arrangements with an undulating circular track, a combined
motion is produced, which is very effective imitation of the rolling of a bort at sea,
and the cars may be arranged to take the form of boats, but I do not liunt myself to
any description of seats
Where however such a side rocking motion as above referred to is not desired,
allowance must be made for the variation in the horizontal distance of the outer ends
of the radial rods from the centre of the track This I effect by laying the trach or
1 uls so as to deviate from a true circular shape, the deviation corresponding with the
variation in the horizontal distance of the outer end of the ridiil rods from the
vertical rotating xis Thus if there are only one or two up and down inclines or
undulations as shewn in Fig 3 in plan and in Fig 4 in elevation, the track will be
slightly elliptical or oval, or if there are several such undulations the track will have
as many sinuous deviations from the true circular shape The maximum deviation ab
Fig 3, will depend on the full rise, respectively fill, of the undulation, on the length
of the radial rods, and on the height of the cheese wheel with respect to the top of
the undulations If such track could be accurately and truly laid according to the
proper oval or elliptical shape, the radi il rods might be attached with well fitted pin
joints to both the cheese wheel and to the cars As however it is not conveniently
practicable to lay the track with sufficient accuracy to the proper shape, I prefer to
pass the outer end of each rod through broad strip or retangular bridle c, Fig 5,
the end of the rod 6 being curved as shown at d, so that even with the varying
inclination of the rod b, the weight of the rod presses perpendicularly downwards on
the fame of the carriage Another incans of allowing for the end play of the rods b,
would be to attach the end of the rod b by a pin joint to a short link hinged to the
carriage frame
Where the height of the undulations of the track is considerable with respect to the
diameter of the trich, the ari ingements described in the first part of this specification
for imparting side oscillation to the cars, would tilt or move the cars too much if the
trich were laid truly circular I therefore propose to use this same expedient of
causing the track to deviate from the true circul ir shape in order to reduce the amount
of side oscillation or tilting of the cars within reasonable limits In this case it
will be evident that the deviation will be similar, but not so great in amount as that
referred to as the second part of my Invention, as necessary to allow for the horizontal
motion of the radial rods
In order to ensure that the cars shall keep the track, 1 provide horizontal or vertical
guide wheels, with or without flanges, to catch beneath the hp or angle of the rails The
supporting or carrying wheels also, may be with or without flanges
It will be understood that I do not limit myself to any form or device of seats, which
may be arranged to represent boats, horses, carriages etc, as desired, nor do I limit
myself to any mode of imparting the rotary motion to the roundabout

page_text: Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed I declare that what I
claim is
-
1° In switchback roundabouts, the use of an oval or elliptical track arranged so as
to correspond with the varying horizontal distance of the outer ends of the radial
rods from the centre of the track, substantially as and for the purpose or purposes
specified
2° In switchback roundabouts, the use or application of the varying inclination, (or
the variation of the inclination), of the radial rods for the purpose of producing a side
oscillation or rolling of the cars
3° In switchback roundabouts, the use or application of the varying horizontal
distance, (or the variation of the horizontal distance), of the radial rods from the
centre of the track for the purpose of producing a side oscillation or rolling of the
сага
4° In switchback roundabouts, the means for communicating a side oscillation or
rolling of the cars according to the above claims 2° and 3° substantially as herein
described and illustrated in Figs 1 and 2
5 In switchback roundabouts, the use of oval or elliptical tracks modified or
arranged for the purpose of controlling or limiting the side oscillations or motion of
the cars substantially as herein set forth
6° The several modes or means of connecting the radial rods to the cars, substantially
as heroin set forth and allnstrated in Fire 19 and 5
Dated this 1st day of March 1889
J OLARK JEFFERSON, Assoc RSM, Wh Sc,
2, East Parade, Leeds,
Agent for Applicant