An Improvement in or applicable to Hoisting Machinery.
Year: 1890

page_text: Date of Application; 1st July, 1890
Complete Specification Left, 31st Mar., 1891-Accepted, 2nd May, 1891
PROVISIONAL SPECIFICATION.
An Improvement in or applicable to Hoisting Machinery.
We, WILLIAM DENT PRIESTMAN and SAMUEL PRIESTMAN, of Holderness
Foundry, Hull, in the County of York, Engineers, do hereby declare the nature of
this invention to be as follows:-
This invention relates to means for rendering wire ropes capable of being used in
place of chains in "grab-cranes" and other machines employed for hoisting.
In carrying out our invention, we form on the circumference of the winding
barrel a spiral groove for the reception of the rope; and near the line where the
rope leaves the barrel tangentially, we arrange, in close proximity to the cir-
cumference of the barrel and parallel with the axis thereof, a plate which prevents
the rope escaping from the spiral groove. The plate is secured to the franie of the
machine or may form part thereof.
Dated this 28th day of June 1890.
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Agent for the Applicants.
COMPLETE SPECIFICATION.
An Improvement in or applicable to Hoisting Machinery.
We, WILLIAM DENT PRIESTMAN and SAMUEL PRIESTMAN, of Holderness
Foundry, Hull, in the County of York, Engineers, do hereby declare the nature
of this invention and in what manner the same is to be performed to be par-
ticularly described and ascertained in and by the following statement :-
This invention relates to means for rendering wire ropes capable of being used in
place of chains in "grab-cranes" and other machines employed for hoisting.
Fig. 1 of the accompanying drawings illustrates, partly in side elevation and
partly in section, the way in which we prefer to carry out our invention; Fig. 2
being a corresponding front elevation.
We form, on the circumference a of the winding barrel A, a spiral groove a¹ for
the reception of the rope. Near the line where the rope leaves the barrel
tangentially, we arrange, in close proximity to the circumference a and parallel
with the axis of the barrel, a plate, bar or roller B, which acts as a guide and
prevents the rope escaping from one to another of the convolutions of the groove a'.
The guide is mounted in brackets & secured to the frame of the machine. Or, if a
plate or bar be used, it may form part of the framework.
A second guide C may be added, if preferred; though we consider the guide B
by itself sufficient for ordinary requirements.
Either or both guides may be made adjustable in order to permit any convenient
size of rope to be used on the winding barrel.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we claim
--
1. The improved means arranged or operating substantially as herein described
for enabling wire ropes to be used in "grab-cranes" and other machines employed
for hoisting.

page_text: 2. In hoisting machinery, the combination, with a winding barrel A, of a guide,
such as B, substantially as and for the purpose set forth.
Dated this 25th day of March 1891.
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Agent for the Applicants.