Improvements in Apparatus for Transmitting, Regulating and Controlling Rotary Motion.
Year: 1898

page_text: Date of Application, 19th Dec., 1898
Complete Specification Left, 19th Sept., 1899-Accepted, 18th Nov., 1899
PROVIDIONAL SPECIFICATION.
Improvements in Apparatus for Transmitting, Regulating and
Controlling Rotary Motion.
We, ROBERT PARKINSON, of 257, Whalley New Road, Blackburn, in the County
of Lancaster, Engineer, JAMES LAW, of Preston Road, Blackburn, aforesaid,
Chemist, and HENRY BARMBY, of 32, Church Street, Preston, in the aforesaid
County, Engineer, all of The Blackburn Engineering Company, Blackburn, do
hereby declare the nature of this invention to be as follows:-
Our said invention relates to improvements in apparatus for transmitting,
regulating, and controlling rotary motion and is applicable for various purposes,
but particularly for winding, hauling and raising.
The principal object of the invention is to so construct and arrange the parts,
that upon the withdrawal or stoppage of the actuating means, such parts are at
once and automatically locked in the positions they occupy when power ceases to
be applied, so that the apparatus is under perfect control.
The construction of apparatus may be such as that by the use of toothed gear
we obtain a differential motion for the driven part or parts whereby power or
speed is gained, or the transmission of power may be direct so that no differential
speed is imparted to the driven part or parts.
Under the first form of our invention, in which a differential speed is obtainable,
we provide two fixed discs or cheeks, which are connected together a suitable
distance apart in any convenient manner, and serve to contain and shroud the
moving parts.
The back disc carries a fixed stud, and upon this stud is loosely mounted an
excentric, such excentric being formed on or connected to a suitable operating
handle.
The excentric carries a toothed pinion which gears with an internally toothed
wheel running loosely on the fixed stud. The toothed pinion does not revolve
but is oscillated on and by the excentric so that it constantly engages with and by
its movement drives the internally toothed wheel. In order to prevent the toothed
pinion from revolving, and yet permit the same to oscillate so that it may drive
the internally toothed wheel, the toothed pinion carries two, three or more pins
or studs which work in circular recesses or holes formed in the inner face of the
front disc or the pins may be on the disc and the holes in the pinion. The pins or
studs might be carried by an independent plate attached to the toothed pinion.
When using the apparatus for winding or hauling, the outer periphery of the
internally toothed wheel would be suitably fashioned to receive the winding band
or the like, or a suitable barrel or drum might be attached to the internally
toothed wheel.
By revolving the handle, and consequently the excentric, the toothed pinion is
oscillated, driving in turn the internally toothed wheel and so winding or un-
winding the band attached to its periphery according to the direction in which the
handle is turned. On releasing the handle the parts are at once locked in position
by the weight of the load acting on the pinion carrying the pins or studs.
By a variation in the respective number of teeth in the pinion and internally
toothed wheel a differential motion may be imparted to such internally toothed
wheel as will be well understood.

page_text: In another design which our invention may take, we form the back disc with
suitable ratchet teeth or projections the back disc also carrying a fixed stud as
before. Upon this stud we mount a cord barrel or drum, the barrel being formed
on one face with abutments which act as slides to support and guide a suitable
sliding disc or part which carries a locking detent or finger. This sliding disc
or part is suitably cut away at the centre so as to permit the disc to slide in the
abutments. The detent or finger is normally held in engagement with one of the
ratchet teeth or stops by a spring so as to lock the barrel to the back disc. To
effect winding or unwinding of the cord on or from the drum we employ a suitable
handle having a tubular extension which engages the fixed stud, and carrying a
stop or projection which bears against an abutment formed on the sliding disc or
part. By forcing the stop or projection against the abutment, the disc or part is
caused to slide against the action of the spring, withdrawing the detent or finger
from engagement with the ratchet teeth, and so long as the detent is held clear
of the teeth the cord barrel and disc are free to revolve in either direction. When
unwinding, the load rotates the barrel and sliding disc, the handle being merely
operated to counteract the pull of the spring. Immediately the handle is released
the spring shoots the pawl into gear with the ratchet teeth and rotation of the
barrel is at once arrested.
In another modification we loosely mount on the fixed stud a suitable disc
carrying driving pins these pins being operated by a boss formed on the back of
the handle. The boss is formed with ways for the reception of such driving pins
and also with cam surfaces or projections which, as the boss is revolved, tend to
thrust out of action two pivotted pawls which are provided with cam surfaces or
are excentrically mounted on the revolving disc.
The pawls are also provided with swells against which the cam surfaces on the
boss bear during its revolution. Springs acting on the pivotted pawls tend to
thrust their cam surfaces against an annular ring projecting from the fixed back
disc (or extending between the fixed back and front discs) save at such times as
their action is overcome by the cam surfaces on the boss. Should the handle be
released when the swells on the pawls ride into the ways formed for the reception
of the driving pins, rotation at once ceases and the parts are locked.
The cord barrel is formed with, or carried by the revolving disc, suitable
provision being made for the passage of the cord to the barrel.
According to a further modification of our invention the back disc carries an
annular ring and fixed stud as before but we employ a band brake to arrest
revolution of the cord barrel upon release of the handle.
Upon the fixed stud we mount loosely a disc or pulley provided with a stop the
disc also carrying a cord barrel.
A suitably shaped bracket or plate is connected to the disc and receives one end
of the brake strap the other end of the strap being connected to one end of a lever
pivotted on a pin carried by the bracket or plate. A spring carried by the bracket
or plate and bearing against a stop carried by the other end of the pivotted lever
tends to expand the strap against the fixed annular ring and so prevent revolution
of the parts. To operate the parts and consequently the barrel we provide a
handle having a boss fashioned with two wings which on turning of the handle in
either direction bear against suitably formed faces on the pivotted lever and by
rocking the same on its pivot the brake strap is contracted so that the parts may
be freely revolved. On releasing the handle, rotation is at once arrested, owing
to the spring acting on the lever which in turn expands the brake strap.
The stop on the disc bearing against a shoulder formed on the pivotted lever
assists the same in expanding the brake band.
Dated this 17th day of December 1898

page_text: Improvements in Apparatus for Transmitting, Regulating and
Controlling Rotary Motion.
We, ROBERT PARKINSON, of 257, Whalley New Road, Blackburn, in the County
of Lancaster, Engineer, JAMES LAW, of Preston Road, Blackburn, aforesaid,
Chemist, and HENRY BARMBY, of 32, Church Street; Preston, in the aforesaid
County, Engineer, all of The Blackburn Engineering Company, Blackburn, 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 drawings:-
Our said invention relates to improvements in apparatus for transmitting,
regulating, and controlling rotary motion and is applicable for various purposes,
but particularly for winding, hauling, raising and the like operations.
The principal object of the invention is to so construct and arrange the parts,
that upon the withdrawal or stoppage of the actuating means, such parts are at
once and automatically locked in the positions they occupy when power ceases to
be applied, so that the apparatus is under perfect control.
The construction of apparatus may be such as that by the use of toothed gear
we obtain a differential motion for the driven part or parts whereby power or
speed is gained, or the transmission of power may be direct so that no differential
speed is imparted to the driven part or parts.
Our invention will be clearly understood from the following description when
read in connection with the annexed three sheets of drawings, in which-
On Sheet 1:
Fig. 1 is a sectional side view of one form of apparatus constructed in accord-
ance with our invention suitable for winding and hauling purposes.
Fig. 2 is a plan view, partly in section, of Fig. 1 and with the operating
handle removed.
On Sheet 2:
Fig. 4 is a sectional side view of a modified form of gear.
Fig. 5 is a plan view of Fig. 4, partly in section.
On Sheet 3:
Fig. 6 shows a further modification of our invention the view being shown
partly in section.
Referring in the first instance to the apparatus shown in Sheet 1 of the
drawings:
Under this form of our invention, in which a differential speed is obtainable,
we provide two fixed discs or cheeks a, b, which are connected together a suitable
distance apart in any convenient manner, as for instance by an annular cover c
which serves to contain and shroud the moving parts.
The back disc a carries a fixed stud d and upon this stud is loosely mounted
an excentric e such excentric being connected to a suitable operating handle f.
As shown in Fig. 1 the excentric e is formed with a tooth e¹ which engages a
notch ea formed in the removable handle f (see Fig. 3), so that when the handle
is slipped on the stud d and revolved the excentric e is operated.
The excentric e carries a toothed pinion g which gears with an internally
toothed wheel h running loosely on the fixed stud d. The toothed pinion g does
not revolve but is oscillated on and by the excentric e so that it constantly engages
with and by its movement drives the internally toothed wheel k. In order to
prevent the toothed pinion g from revolving, and yet permit the same to oscillate
so that it may drive the internally toothed wheel h, the toothed pinion g carries
two, three or more pins or studs which work in circular recesses or holes j

page_text: formed in the front disc b or the pins may be on the disc and the holes in the
pinion. The pins or studs might be carried by an independent plate attached
to the toothed pinion. Instead of employing a fixed disc b we may utilise a
loose plate having cuts or gaps at intervals which engage projections or abut-
ments formed on the surrounding cover c. as more clearly shown in Fig. 2.
When using the apparatus for winding or hauling the internally toothed wheel
is formed or provided with a drum, or the outer periphery is suitably fashioned,
to receive the winding cord, band, or the like.
revolved thereby operating the
When the apparatus is in use the handle f
excentric e so that the externally toothed pinion g is oscillated, driving in turn the
internally toothed wheel h and so winding or unwinding the band attached to the
drum according to the direction in which the handle is turned. On releasing the
handle the parts are at once locked in position by the weight of the load acting
on the pinion g carrying the pins or studs i.
By a variation in the respective number of teeth in the pinion and internally
toothed wheel a differential motion may be imparted to such internally toothed
wheel as will be well understood.
In Sheet 2 the construction and operation of parts is very similar to that shown
and described with reference to Sheet 1 save that arrangements are made for
lowering a load without turning the operating handle or means the reverse way.
The arrangements are also such that when controlling motion such motion can
be interrupted or set going immediately. Figs. 4 and 5 show the gear as
arranged for hoisting winding or hauling. In the said Figures is the drum
for the cord or band the drum being fixed to the shaft which is free to revolve
in bearings formed in the cheeks or discs a b. The excentric e forms part of or
is fixed to the sleeve which is loose on the shaft the excentric e carrying
a pinion g provided with studs i and driving the internally toothed wheel
keyed on the shaft d.
The studs engage holes j formed in a plate or disc m such plate being pro-
vided with ratchet teeth or notches m¹ with which engage a suitably formed
nose n¹ of a lever n the lever normally preventing the disc n from revolving.
When it is desired to lower a load the nose n¹ of the lever n is moved from
engagement with the teeth of the ratchet wheel which is then free to revolve.
We may provide a detent lever o pivotted at of to the lever n the detent o¹ of
such lever engaging either the notch o² or o³ in the quadrant plate p so as to hold
the lever in or out of gear with the ratchet plate or disc m.
In order to readily control the revolution of the parts we employ a strap or
band encircling the internally toothed wheel h such strap being operated by a
pivotted lever r working on one of the studs s which separate the cheeks or
discs a b.
In another design which our invention may take, and as shown in Fig. 6
Sheet 3 we form the back disc a or the annular covers c with suitable ratchet
teeth or projections & the back disc also carrying a fixed stud d as before.
Upon this stud we mount a cord barrel or drum 7, the barrel being formed on
one face with abutments which act as slides to support and guide a suitable
sliding disc or part which carries a locking detent or finger u¹. This sliding
disc or part is suitably cut away at the centre so as to permit the disc to slide in
the abutments. The detent or finger is normally held in engagement with
one of the racket teeth or stops by a spring u² so as to lock the barrel to the
back disc a. To effect winding or unwinding of the cord on or from the drum l
we employ a suitable handle f having a tubular extension d which engages the
fixed stud d, and carries a stop or projection which bears against an abut-
ment formed on the sliding disc or part. By forcing the stop or projection v
against the abutment ³, the disc or part u is caused to slide against the action of the
spring ² withdrawing the detent or finger from engagement with the ratchet teeth,
and so long as the detent is held clear of the teeth the cord barrel and disc are free
to revolve in either direction. When unwinding, the load rotates the barrel and

page_text: sliding disc, the handle being merely operated to counteract the action of the
spring u. Immediately the handle is released the spring u² shoots the detent or
finger into gear with the ratchet teeth t and rotation of the barrel i is at once
arrested.
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 improved differential speed gear consisting of a revolving excentric
having a toothed pinion mounted thereon and formed or provided with studs
engaging holes or recesses so as to transmit motion to a pulley or its equivalent
formed with internal spur teeth in the manner for the purposes and substantially
as described with reference to Sheet of the drawings.
2) The general arrangement construction and combination of parts comprising
the improved differential speed gear substantially as hereinbefore described and
as shown in Sheet 1 of the drawings.
3) The modified construction and arrangement of parts comprising the
improved differential gear in which provision is made for the release and braking
of the parts, in the manner, and substantially as hereinbefore described and
shown in Sheet 2 of the drawings.
4). The modified construction and combination of parts forming the improved
winding gear substantially as herein described and shown in Sheet 3 of the
drawings.