Improvements in or connected with Driving Mechanism for Winches, Windlasses, and the like.
Year: 1892

page_text: Date of Application, 17th Oct., 1892-Accepted, 19th Nov., 1892
Improvements in or connected with Driving Mechanism for Winches,
Windlasses, and the like.
1, JOHN SCOTT, of Bute House, Cannhall Road, Leytonstone, in the County of
Essex, Mechanical 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 :-
This invention relates to improvements in or connected with driving mechanism
for winches, windlasses and the like.
In carrying out my invention I provide a driving wheel having two concentric
flanges between which is rotated a driving pinion of a diameter slightly less than
the distance between the said flanges on a radial line and which pinion is designed
to communicate its motion to the driving wheel in one or the other direction as
desired by frictional contact with one or the other of the flanges. In order that
either flange of the driving wheel may be placed in frictional contact with the
driving pinion, the said driving wheel is mounted on an eccentric or on a shaft
carried in eccentric bearings.
To enable my invention to be fully understood I will describe the same as applied
to a steam winch and, in the accompanying drawing,
Figure 1 is a sectional elevation of such steam winch, and
Figure 2 is a longitudinal section of the same.
a is the framing of the winch and 6 is the drum or barrel shaft mounted in
bearings c, d in the said frame. The bearing c is bored out spherically and designed
to receive a correspondingly spherical portion of the shaft b, whilst the bearing d
is adapted to rotate slightly upon its axis and is bored out to receive the shaft
slightly eccentrically with the axial line so that when the bearing d is slightly
rotated by means of a lever e affixed thereto the said shaft may be slightly raised
or lowered, the spherical bearing c permitting of this movement of the shaft.
fis the drum or barrel of the winch mounted upon the shaft b and g is the
driving wheel secured to the said barrel, this driving wheel being provided with
the outer flange h and with the inner flange i.
jis the friction pinion which is preferably formed with a series of ribs and
grooves adapted to enter corresponding grooves and ribs formed in the adjacent
faces of the flanges and i so as to form a relatively large frictional surface.
This pinion is mounted upon the crank shaft of the driving engine m the said
crank shaft being carried in bearings in suitable standards so that the motion of
the engine is communicated directly to the driving wheel g.
The operation of the apparatus is as follows: Assume the driving wheel
9 to be
lowered by means of the eccentric bearing d so that the flange / thereof is in
frictional contact with the pinion j. If now the engine is caused to operate in the
direction of the arrow 1, Figure 1, the driving wheel 9 and the drum f will be
driven in the direction of the arrow 2, Figure 1. If it is desired to rotate the
wheel g in the opposite direction it is only necessary to move the bearing d so that
the flange i will be brought into frictional contact with the pinion j, the flange h
being moved out of contact; the drum will then run in the reverse direction
without its being necessary to reverse the direction of rotation of the engine.
Although I have described my improvements as applied to a machine driven by
steam power it is obvious that my improvements are equally applicable to machines
driven by manual or other power.

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 a winch, windlass or the like, the combination of a double flanged driving
wheel and a driving pinion located between the two flanges, the said driving wheel
being mounted upon an eccentric or upon a shaft having an eccentric bearing in
such a manner that the movement of the said eccentric or eccentric bearing in one
or the other direction, will place one or the other of the flanges of the said
driving wheel in frictional contact with the driving pinion, substantially as
described.
(2.) The manufacture and use of the improved driving mechanism for winches,
windlasses and the like constructed and arranged substantially in the manner
hereinbefore described and illustrated in the accompanying drawing.
Dated the 17th day of October 1899
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.