Year: 1887

page_text: Date of Application, 15th Feb., 1887
Complete Left, 12th Oct., 1887
Complete Accepted, 15th Nov., 1887
HENRY JAMES COLES of 89 Sumner Street Southwark in the County of Surrey
do hereby declare the nature of this invention to be as follows:-
My invention relates to that class of cranes in which a loose roller path is placed
between the upper or rotating portion of the crane and the lower or non-rotating
portion, and consists of apparatus for controlling the motion of the loose roller path
with relation to the lower or non-rotating portion of the crane.
In cranes as at present constructed the skidding motion of such a loose roller path
is only regulated by the weight of the crane, load &c. bearing on it and the momentum
of the crane when such skidding action is brought into play, and the object of my
invention is to introduce regulating apparatus whereby the skidding action may he
reduced at will or caused to cease altogether.
To effect this I introduce one or more brakes to act on any of the surfaces of such
a loose roller path.
These brakes may be of wood, metal, or other suitable material, and are attached to
the non-rotating portion of the crane in such a manner that they may be applied to
either the inner or outer surfaces of the loose roller path or on projections or recesses
formed on or in the same, the pressure being regulated by one or more screws, wedges,
or keys. The pressure may be exerted in such a direction as to increase the friction
between the loose roller path and the non-rotating bed, or simply to grip the
loose roller path, or may be so arranged as to give a combination of both these
actions.
In some forms of this apparatus I introduce springs or other yielding media so
as to give some amount of elasticity to the action of the brake or brakes.
DL
11 1
An 1
1000
HENRY J. COLES.

page_text: HENRY JAMES COLES 89 Sumner Street Southwark in the County of Surrey,
Mechanical Engineer do hereby declare the nature of my invention for IMPROVE
MENTS IN CRANES and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
My invention relates to that class of cranes in which a loose roller path is placed
between the upper or rotating portion of the crane and the lower or non-rotating
portion and consists of apparatus for controlling the motion of the loose roller path
with relation to the lower or non-rotating portion of the crane.
In cranes as at present constructed the skidding motion of such a loose roller path
is only regulated by the weight of the crane, load &c., bearing on it and the momentum
of the crane when such skidding action is brought into play. The object of my
invention is to introduce regulating apparatus whereby the skidding action may be
reduced at will or caused to cease altogether.
To effect this I introduce one or more brakes to act on any of the surfaces of such
a loose roller path or attach them to the loose roller path to act on the lower or
non-rotating portion of the crane.
These brakes may be of wood metal or other suitable material and be attached
may
to the non-rotating part of the crane in such a manner that they may be applied to
either the inner or outer surfaces of the loose roller path or on projections or
recesses formed on or in the same such pressure being regulated by one or more
screws wedges or keys. The pressure may be exerted in such a direction as to increase
the friction between the loose roller path and the non-rotating bed or simply to grip
the loose roller path, or so arranged as to give a combination of both these actions, or
they may be attached to the loose roller path and made to grip the lower or non-
rotating portion of the crane.
In some forms of this apparatus I introduce springs or other yielding media such
as weights which may or may not be combined with levers so as to give some amount
of elasticity to the action of the brake or brakes.
In order more clearly to illustrate my invention I append an elevation and plan
shewing one mode of application thereof to a steam crane Fig. 1 being the elevation
part of which is shewn in section and Fig. 2 being a plan. A is the superstructure
or rotating portion of the crane. B is the non-rotating portion thereof the ring C
D D' are two brakes
between the two being the loose roller path above mentioned.
which operate on the bevelled portion of the ring C. In the arrangement illustrated
these are shewn as being held down and pressed into action by means of plates E E¹
and bolts F F F F and it will be obvious that by tightening the bolts F F F F¹
the brakes D D' will restrain or regulate the motion of the ring C or cause it to

page_text: remain entirely at rest according to the pressure exerted on the brakes D D¹ by the
bolts and plates.
Having now particularly described and ascertained the nature of my said
invention and the manner in which the same is to be performed I declare that
what I claim is
1st. The application of one or more brakes to control the motion of the loose roller
path of cranes constructed with a loose roller path between the upper or rotating
portion and the lower or non-rotating portion.
2nd. The combination of a loose roller path and one or more brakes substantially
in the manner and for the purposes herein described.