Year: 1896

page_text: Date of Application, 15th Oct., 1896
Complete Specification Left. 15th July, 1897-Accepted, 28th Aug., 1897
We, JOHN SCARISBRICK WALKER, THOMAS ASCROFT WALKER and EDWIN ROBERT
WALKER all of Pagefield Iro nWorks, Wigan in the County of Lancaster, Engineers and
HENRY FISHER of Clifton Colliery, Nottingham in the County of Nottingham, do
hereby declare the nature of this invention to be as follows:-
This invention relates to winding and hauling gear for collieries and for other
purposes and is designed to safeguard the winding drum and prevent it running back
when not in use.
To safeguard the winding drum and to prevent it running back when in use, we
place a series of ratchet grooves in it, or form ratchet teeth on or attached thereto, and
place a ratchet pawl or pawls working therein from fixed supports. By this
arrangement, the winding drum can only run in one direction. If there be pawls and
sets of ratchets in the reverse direction also, and the pawls be connected with an
oscillating lever or levers, they can be used as safeguards for the winding drun for
running in either direction, as when the drum has to wind up, the levers are moved,
so that the pawls allowing free winding up but not winding down, come into play;
whereas when the reversing mechanism is applied to the winding device, the levers
are automatically reversed by the reversing mechanism, and in winding down, the
pawls come into play which allows the winding down free play, but stops winding
in the reverse direction. Where however the winding is for raising weights instead
of for horizontal motion, pawls in only one direction are required to be thrown
in and out of gear with the reversing mechanism.
In conjunction with or separate from the pawls and ratchets we sometimes apply
one or more brakes, acting automatically on the rim of the wheel to prevent any
tendency of the load there may be, to overcome the driving wheel when the friction
pawl or clutch is released from the friction disc. We, according to circumstances,
find it advantageous sometimes to apply only one of the modes of braking
the wheel, that is by the pawls and ratchets or by the brake, at other times both
modes are applied.

page_text: COMPLETE SPECIFICATION.
Improvements in or connected with Winding or Hauling Gear.
We JOHN SCARISBRICK WALKER, THOMAS ASCROFT WALKER and EDWIN ROBERT
WALKER all of Pagefield Iron Works, Wigan in the County of Lancaster, Engineers
and HENRY FISHER of Clifton Colliery, Nottingham in the County of Nottingham 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 winding and hauling gear for collieries and for other
purposes and is designed to safeguard the winding drum and prevent it running back
when not in use. To safeguard the winding drum and prevent it running back when
not in use, we place a series of ratchet grooves in it or form ratchet teeth on or
attached thereto and place a ratchet pawl or pawls working therein or fixed
supports.
The invention is best described by aid of the accompanying drawings which
illustrate the same.
In these Fig. 1 is a transverse section of half the winding or hauling drum and part
of the shaft.
Fig. 2 a side view of a segment of the same.
A Ä are ratchet teeth placed on the side rim of the winding drum. B a pawl pivoted
on a stationary or fixed pivot C. D winding drum face. E brake flange to be
hereafter described. By this arrangement as will be seen the winding drum can
only run in one direction. Where a winding device however has to wind in either
direction alternately we prefer to arrange pawls and sets of ratchets in the reverse
direction also alongside the first mentioned pawls or ratchets. The two sets of pawls
are then connected by an oscillating lever or levers so that they can either of them
be used as safeguards for the winding drum, one set being brought into action when
the drum is winding in one direction, and the other set being brought into action
when it is winding in the other direction. The levers lifting the pawls out of gear
are preferably attached in such case to the reversing motion whereby they are
automatically reversed with the reversing motion and thus when winding down the
pawls come into play which allow free winding down but effectually stop the wheel
from winding in the reverse direction. Where however as is usually the case the
winding is for raising weights instead of for horizontal motion, pawls in only one
direction are required to be thrown in and out of gear. Any ordinary method of
throwing the pawls in and out of gear can be used. We have so far mentioned pawls
and ratchets, but it is obvious that what are known as friction pawls can be used
instead, these being well-known mechanical equivalents for the pawls and ratchets.
In conjunction with or separate from the pawls and ratchets we sometimes apply
one or more brakes, on surface E acting automatically on the rim of the wheel to
prevent any tendency that there may be of the load to overcome the driving wheel
when the friction pawl or clutch is released from the friction disc. We, according to
circumstances, find it advantageous sometimes to apply only one of the modes of
braking the wheel, that is by the pawls and ratchets or by the brake, at other times
both modes are applied.

page_text: invention and in what manner the same is to be performed, we declare that what
we claim is :-
The improvements in or connected with winding and hauling gear which consists
in the application of a ratchet device to the rim of the winding drum substantially as
described and with or without a brake.
Led this
14th day
July Tour.
W. P. THOMPSON & Co.,
Of Liverpool, Manchester, Birmingham, and London, Patent Agents.

page_text: Date of Application, 15th Oct., 1896
Complete Specification Left, 15th July, 1897-Accepted, 21st Aug., 1897
PROVISIONAL SPECIFICATION.
Improvements in Friction Clutches or Brakes Applicable for Winding
or Driving Gear and other purposes.
We, JOHN SCARISBRICK WALKER, THOMAS ASCROFT WALKER and EDWIN ROBERT
WALKER all of Pagefield Iron Works, Wigan, in the County of Lancaster,
Engineers, and HENRY FISHER of Clifton Colliery, Nottingham in the County of
Nottingham, do hereby declare the nature of this invention to be as follows:-
This invention relates to friction clutches or brakes applicable for winding or
driving gear and other purposes, and is designed to make such gear more useful
and convenient, while possessing certain advantages over such other mechanism
now in use.
In carrying the invention into effect, we proceed as follows:-
The driving wheel or pulley to which motion is required to be communicated
from the driving shaft when the clutch is in gear, is made to run loose on the
shaft when the clutch is out of gear, so that the driving shaft can rotate if required
and the driving wheel remain at rest. On the driving shaft, in close proximity to
the driving wheel, is keyed a friction disc so as to rotate with the driving shaft.
The driving wheel is provided with three or any other suitable number of pins
projecting therefrom. On the friction wheel is a clip, belt or brake made in three,
or other number of segments, both ends of each part of the clip or brake being
made with lugs or projections, through which are holes to receive right and left
hand threaded screws. The projections are recessed for nuts to receive the right
and left hand threaded screws. One side of the holes we slot out, thus forming a
groove with two lugs, one on each side, and we pass a pin, cotter or bolt through
the lugs either abutting against the screw itself or against a piece or step abutting
against the side of the screw. By this means we have only to take the bolt or
cotter out and slack the nuts to at once withdraw the right and left hand threaded
screws and the mechanism connected therewith, instead of having to take the
entire mechanism to pieces. Each segment of the clip or brake is made with a
pin hole to receive the pins aforesaid projecting from the driving wheel. On
the right and left hand threaded screws are fixed cranks or arms which are con-
nected by links with. uue arms of a sliding piece or slipper which is operated by a
forked or other form of lever, or a hand wheel. In place of making the cranks
or arms aforesaid in the ordinary way, we sometimes use an adjustable crank, the
crank pin being movable in a slot in the crank and regulated in position by a
hand screw or other like mechanism, or the length of the crank may be adjusted by
providing a series of holes therein to any of which the links can be fastened as
required. The nuts aforesaid may be provided with a serrated collar and the pro-
jections which receive the nuts have holes through which are passed serrated
pieces which are adapted to clip the serrations on the nuts, a set screw causing
the serrations on the clips to engage the serrations on the nuts and so lock them and
prevent them working loose accidentally.
Hitherto we have generally placed the sliding slipper for applying the segments

page_text: to the friction disc, and the friction disc itself on the same side of the winding
drum, and consequently a considerable breadth of shaft is occupied. By the
present invention we may place them on opposite sides of the winding drum and
bring the links from the sliding slipper piece to the cranks on the right and left
hand threaded screws through the drum itself. By this means the sliding slipper
can be placed close to or on a boss of the winding drum, and the friction disc abut
against the drum on the other side, the pins aforesaid which engage the friction
segments being screwed in the drum and pass through holes in the segments.
The driving wheel is set in motion or put at rest by the tightening or relaxing
of the clip or belt upon the friction disc. This is effected by means of the hand
wheel levers and screws.
Dated this 11th day of October 1896
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicants.
Improvements in Friction Clutches or Brakes Applicable for Winding
or Driving Gear and other purposes.
We, JOHN SCARISBRICK WALKER, THOMAS ASCROFT WALKER and EDWIN ROBERT
WALKER all of Pagefield Iron Works, Wigan, in the County of Lancaster,
Engineers, and HENRY FISHER of Clifton Colliery, Nottingham in the County of
Nottingham, 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 friction clutches or brakes applicable for winding or
driving gear and other purposes, and is designed to make such gear more useful
and convenient, while possessing certain advantages over such other mechanism
now in use.
Referring to the drawings-
Figure 1 is a side elevation and Figure 2 a transverse section of our apparatus;
Figure 3 a section and Figure 4 an elevation at right angles thereto of right and
left hand screws and contiguous parts.
In these, A. is the driving wheel or pulley to which motion is required to be com-
municated from the driving shaft B when the clutch is in gear. It is made to run
loose on the shaft when the clutch is out of gear, so that the driving shaft can
rotate if required and the driving wheel remain at rest. On the driving shaft B
in close proximity to the driving wheel, is keyed a friction disc C so as to rotate
with the driving shaft. The driving wheel is provided with three or any other
suitable number of pins D projecting therefrom. On the friction wheel is a clip,
belt or brake made in three, or other number or segments, E, both ends of each
of these segments being made with lugs or projections, through which are holes
to receive right and left hand threaded screws F. The projections are recessed for
nuts G to receive the right and left hand threaded screws. One side of the holes
we slot out, thus forming a groove with two lugs I, one on each side, and we pass
a pin J, cotter or bolt through the lugs either abutting against the screw itself or
against a piece or step abutting against the side of the screw. By this means we
have only to take the bolt or cotter out and slack the nuts to at once withdraw the
right and left hand threaded screws and the mechanism connected therewith,
instead of having to take the entire mechanism, to pieces. Each segment of the
clip or brake is made with a pin hole, to receive the pins D projecting from the
driving wheel. On their right and left hand threaded screws are fixed cranks or

page_text: arms K which are connected by links L with the arms of a sliding piece or slipper M
which is operated by a forked or other form of lever or a hand wheel not shown.
In place of making the cranks or arms aforesaid in the ordinary way, we sometimes
use an adjustable crank, the crank pin being movable in a slot N in the crank
and regulated in position by a hand screw I or other like mechanism, or the length
of the crank may be adjusted by providing a series of holes therein to any of which
the links can be fastened as required. The nuts aforesaid may be provided with a
serrated collar Q, Figure 3, and the projections which receive the nuts have holes
through which are passed serrated pieces R which are adapted to clip the serrations
on the nuts, a set screw S causing the serrations on the clips to engage the serra-
tions on the nuts and so lock them and prevent them working loose accidentally.
Hitherto we have generally placed the sliding slipper for applying the segments
to the friction disc, and the friction disc itself to the same side of the winding
drum, and consequently a considerable breadth of shaft is occupied. By the
present invention we may place them on opposite sides of the winding drum and
bring the links from the sliding slipper piece to the cranks on the right and left
hand threaded screws through the drum itself, as shown. By this means the
sliding slipper can be placed close to or on a boss of the winding drum, and the
friction disc abut against the drum on the other side, the pins aforesaid which
engage the friction segments being screwed in the drum and pass through holes in
the segments.
The driving wheel is set in motion or put at rest by the tightening or relaxing
of the clip or belt upon the friction disc. This is effected by means of the hand
wheel levers and screws.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what we
claim is:-
1. The improvements in friction clutches or brakes for the purposes described
which consist in running the driving or winding wheel loose on the shaft alongside
a brake wheel rigid on the shaft and in combination with a segmental strap pinned
to the winding or driving wheel and mechanism whereby the distances between
the segments can be simultaneously adjusted so as to put the brake on or off
substantially as described.
2. The mechanism for adjusting the distances between the brake strap
segment ends substantially as described.
3. A lever brake mechanism having actuating lever devices passing through the
wheel substantially as described whereby the brake can be on one side of the wheel
and the clutch handle on the other.
4. In friction clutches or brakes such as described, the mechanism for holding
the nuts substantially as described in connection with Figures 3 and 4.
Dated viis 14di day of July 1897.
W. P. THOMPSON & Co.,
Of Liverpool, Manchester, Birmingham & London, Patent Agents.
LOOT
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