and other Structures of the like kind.
Year: 1886

page_text: Date of Application, 21st Sept., 1886.
Complete Left, 25th Feb., 1887
Complete Accepted, 1st Apr., 1887.
RESERV
and other Structures of the like kind.
1. CHARLES WAWN, of Wood Green, Wednesbury, in the county of Stafford
Engineer do hereby declare the nature of this invention to be as follows:-
This invention relates more especially to bridges, cranes, turniables, or other
structures of the like kind, which are supported upon a sufficient number of live
rollers, upon which the bridge, or other structure is made to swing or move when
required, the rollers at the same time moving upon a path provided for them.
It has for its object a novel method of constructing and arranging the turning
apparatus by which the movement of the structure upon the rollers is effected when
required, so that it is simpler, cheaper, and more compact than in the methods of
arrangement ordarily heretofore used.
Supposing that my invention is to be applied to a swing bridge supported by an
annular frame resting upon a series of wheels or rollers running upon a circular rail
or path beneath them, the radial axles of the rollers being carried by an annular
frame. I form upon or firmly fix to this latter annular frame a sufficiently strong
circular toothed rack, having vertical teeth gearing into a corresponding toothed
pinion carried in bearings attached to the bridge itself.
The axle of the pinion is provided at its upper end with suitable gear and a handle
or handles by which the pinion can be turned round, carrying with it the bridge itself
and also (but at less speed) the rack and the wheels or rollers upon their path.
Instead of one two or more toothed pinions may be used, and their axles may be
horizontal or at other convenient angle, their teeth and those of the rack being made
of a shape to correspond.

page_text: It is evident that the method of arrangement may be modified more or less to suit
the purpose and circumstances under which it is to be used, for instance the pinion
and the gear which drives it may be placed upon the ground instead of upon the
bridge itself, the toothed rack being upon the roller frame as in the arrangement, first
described, and the path upon which the wheels or rollers travel may be of any desired
diameter forming a circle or a segment of a circle, or it may be straight so that the
bridge or other structure moves in a straight line instead of in a circle.
Instead of a rack and pinion, their equivalent such as a drum and chain may be
used.
EDWARDS & Co.,
35, Southampton Buildings, London,
Agents for the Applicant.

page_text: Improvements in Turning Gear for Swing Bridges, Cranes, Turntables,
and other Structures of the like kind.
I, CHARLES WAWN, of Wood Green, Wednesbury, in the County of Stafford,
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 and accompanying drawing (that is to say) :-
-
My invention relates more especially to bridges, cranes, turntables, or other
structures of the like kind, which are supported upon a sufficient number of live
rollers, upon which the bridge, or other structure is made to swing or move when
required, the supporting rollers at the time moving upon a path provided for them.
It has for its object a novel method of constructing and arranging the turning
apparatus by which the movement of the structure upon the rollers is affected when
required, so that it is simpler, cheaper, and more compact than in the methods of
arrangement ordinarily heretofore used.
In the accompanying drawing, which is in illustration of my invention, it is
supposed to be applied to a swing bridge. The drawing shows a section through one
of the supporting rollers, of such a bridge supported by an annular frame a upon a
series of live wheels or rollers & running upon a concentric rail or path c beneath them,
the radial axles of the rollers being carried by an annular frame
I form upon or
firmly fix to this latter annular frame a sufficiently strong circular toothed rack,
having vertical teeth gearing into a corresponding toothed pinion y, the axle of which
A is carried in bearings attached to the bridge itself.
e,
The axle of the pinion is provided at its upper end with suitable gear and a handle
or handles (not shewn in the drawing) by which the pinion y can be turned round,
carrying with it the bridge itself and also (but at less speed) the rack and he
wheels or rollers & upon their path c.
Instead of one, two or more toothed pinions may be used, and their axles may be
horizontal or at other convenient angle, their teeth and those of the rack being made
of a shape to correspond.
It is evident that the method of arrangement may be modified more or less to suit
the
purpose and circumstances under which it is to be used, for instance the pinion f
and the gear which drives it may be placed upon the ground instead of being carried
by the bridge itself as shewn, the toothed rack being upon the roller frame as in the
arrangement first described, and the path upon which the wheels or rollers travel may
be of any desired diameter forming a circle or a segment of a circle, or it may be
straight so that the bridge or other structure moves in a straight line instead of in a
circle, the supporting rollers being properly formed. Instead of a rack and pinion,
their equivalent such as a drum and chain may be used.

page_text: 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. In turning gear for swing bridges, cranes, turntables, or other structures of the
like kind carried by live rollers, the rack upon the roller frame e, in combination
with the pinion g and driving gear carried by the bridge, crane, turntable, or other
structure, substantially as described and shewn in the drawing.
2. The rack upon the roller frame e in combination with the pinion g and driving
gear fixed upon the ground, substantially as described.
3. In the arrangements described, the use of a drum and chain or their equivalents,
instead of the pinion g and rack f.
EDWARDS & Co.,
35, Southampton Buildings, London,
Agents for the Inventor.