other Fibrous Materials.
Year: 1887

page_text: Date of Application, 19th Feb., 1887
Complete Left, 18th Nov., 1887
Complete Accepted, 20th Dec., 1887
other Fibrous Materials.
I BENJAMIN ALFRED DOBSON, Machine Maker, of Kay Street Works, Bolton in
the County of Lancaster, do hereby declare the nature of said Invention for
IMPROVEMENTS IN SELF-ACTING MULES FOR SPINNING COTTON WOOL AND OTHER
FIBROUS MATERIALS, to be as follows:-
My improvements relate to self-acting mules and have for their principal object to
obtain more certain and expeditious changes in those mules known as long lever
mules.
To effect this I have on the quadrant band shaft at the front of the headstock a
small pinion gearing into a spur wheel which has attached to it a scroll or snail. A
bowl on a pivoted lever engages this scroll and thus the lever receives an upward and
downward movement which it transmits to a slide fitted and free to move vertically in
a slideway beneath the end of the long lever to which the slide is connected by two
spiral springs one a closed spring and the other an open spring.
During the outward run of the inule carriage and before the first change is made
the open spiral spring is compressed by the revolution of the quadrant band shaft
driving the scroll and raising the pivoted lever and slide so that when the catch is
withdrawn at the moment of making the first change the compressed spring exerts
its force and rapidly and certainly moves the long lever the distance required to make
the first change leaving sufficient compression in the spring to effect the second
change when the catch is again withdrawn during the outward run.
During the inward run of the mule carriage the quadrant shaft turns in the other
direction and the pivoted lever and slide are depressed thereby extending the coiled
or closed spring so that when the carriage arrives at the end of its inward run there
is sufficient power in the spring to make the third or last change when the catch is
withdrawn. At the back end of the long lever I have a stud or bowl working in a
ever pivoted near one side of the headstock. This pivoted lever is made in say two
parts connected together by a closed spiral spring and one extremity of the lever
has a fork which enters the groove in a catch box on the back shaft.

page_text: When the first change of the long lever is made the catch box will be drawn out
of gear thereby stopping the revolution of the back shaft.
When the second change takes place the slot in the pivoted lever will be in a direct
line with the line of motion of the stud or bowl on the long lever and thus no
further movement will be imparted to the catch box.
When the third change takes place the catch box will be instantly moved back
into gear and the back shaft again turned.
Should the catch box strike tooth and tooth or should the carriage be impeded in its
outward course by any excessive resistance the spring will yield sufficiently to allow
the catch box to slip out of gear.
H. B. BARLOW,
Agent.
COMPLETE SPECIFICATION.
Improvements in Self Acting Mules for Spinning Cotton, Wool,
and other Fibrous Materials.
I BENJAMIN ALFRED DOBSON Machine Maker of Kay Street Works Bolton in the
County of Lancaster, do hereby declare the nature of said Invention for IMPROVE-
MENTS IN SELF ACTING MULES FOR SPINNING COTTON WOOL AND OTHER FIBROUS
MATERIALS, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:—
My improvements relate to self acting mules and have for their principal object to
obtain a more certain and expeditious method of making the changes in those mules
known as Long Lever Mules.
And in order that my Invention may be fully understood and readily carried into
effect I will describe the accompanying three Sheets of Drawings reference being had
to the figures and letters marked thereon.
Figure 1 is a side view and Fig. 2 a plan of part of a self acting mule to which my
Improvements are applied. Fig. 3 is a similar view to Fig. 1 but some of the parts
are shown in different positions and others are omitted. Fig. 4 is an elevation partly
in section of the improved arrangement of mechanism which I employ in conjunction
with the long lever to control the rotation of the back-shaft. Fig. 5 is a detailed
view of some of the parts shown in Figs. 1 and 2 and Fig. 6 is a view on a sinaller
scale but showing the whole of the long lever.
Referring first to Figures 1, 2 and 3. a designates the quadrant band-shaft and

page_text: b the headstock. On the shaft a I mount a small pinion al gearing into a spur wheel c
which has attached to or formed on it a scroll or snail c¹ indicated by dotted lines
Fig. 1. A lever e is pivoted at e¹ to the headstock b and a bowl on this lever
engages the scroll c¹ whereby the lever e receives an upward and downward move-
ment. At the end of the lever e shown best in Fig. 5 is a slot into which enters a
stud fixed on a slide f which is fitted and free to be moved vertically by the
movement of the lever e in a slideway fixed on the framing beneath the end of the
ordinary long lever to which the said slide is connected by two spiral springs hand i
respectively of which is a closed spring and i is an open spring. The two weighted
catch or latch levers jjare pivoted as usual to the headstock and are operated in the
ordinary way to hold or release the long lever as is well understood.
During the outward run of the mule carriage (which is not shown on the Drawings,
and before the first change is made when the parts are in the relative positions
indicated by Fig. 3 the open spiral spring i is compressed by the revolution of the
quadrant band shaft a driving the scroll c² and raising the pivoted lever e and slide J
so that when the catch on the latch lever j is withdrawn at the moment of making the
first change the compressed spring i exerts its force and rapidly and certainly moves
the long lever g the distance required to make the first change leaving sufficient
compression in the spring i to effect the second change on the withdrawal of the catch
on the latch lever during the outward run the parts at the moment of withdrawal
being in the relative positions shown in Fig. 1.
During the inward run of the mule carriage the quadrant shaft turns in the other
direction and reverses the rotation of the scroll c¹ thereby depressing the pivoted
lever e drawing down the slide and extending the coiled or closed spring / so that
when the carriage arrives at the end of its inward run there is sufficient power in the
spring to make the third or last change when the catch on the latch lever j is
withdrawn.
Referring now to Fig. 4.-At the back of the long lever g I have a stud or bowl k
working in an open slot in a lever / fulcrumed at l¹ near one side of the headstock.
This lever is made in say two parts as shown the parts being connected together by
a closed spiral spring m and one extremity of the lever has a fork which enters a
groove in the boss n of a catch box n¹ n³. The part n' of the catch box is mounted
loosely and is free to slide on the backshaft o while the part n³ is mounted loosely on
a flanged bush p which is keyed on the shaft o. The part n which is driven by
gearing not shown is held in position on one side by the flange of the bush p and on
the other side by a collar o¹ fixed on the shaft o. The part n¹ has lugs or equivalents n³
on its inner face which engage corresponding slots or equivalents p¹ on the face of
the bush p so that when the teeth n on the part n are moved into gear with the
teeth n on the part n the motion given to the part n² is transmitted by the part n¹
through the bush p to the backshaft o.
When the two parts n² n² are moved out of gear i.e. the teeth n disengage the
teeth n the part n the bush p and the backshaft o are all stationary but the lugs n³
still engage the slots p¹.
When the first change takes place the stud or bowl & on the long lever g acting on
the pivoted lever draws the part n¹ of the catch box out of gear with the part n²
thereby stopping the rotation of the backshaft.
When the second change takes place the slot in the lever / is in a direct line with
the line of motion of the stud or bowl k on the long lever and thus the backshaft o
remains stationary as no farther movement is imparted to the lever and the
catch box.
When the third change takes place the stud or bowl k acting on the lever raises it
into the position indicated by dotted lines and instantly moves the part n¹ into gear
with the part n² and thus causes the catch box to again drive the backshaft o.
Should the catch box strike tooth and tooth or should the carriage be impeded in its
outward course by any excessive resistance the spring m will yield sufficiently to allow
the teeth n on the movable part n¹ of the catch box to slip in and out of gear with
the teeth n on the rotating part n².

page_text: Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what I
claim is―
1. The combination with the long lever of a self acting mule, of an arrangement of
open and closed springs for the purpose of assisting and expediting the action of said
lever in effecting the various changes substantially as herein set forth.
2. The combination with the long lever of a self acting mule, of open and closed
springs connected to a slide to which a vertically reciprocating motion is imparted as
required from the quadrant band shaft substantially as and for the purposes herein set
forth.
3. The combination with the quadrant band-shaft and a scroll or snail actuated
therefrom, of a pivoted rocking lever or equivalent operating a vertical slide connected
by open and closed springs to the long lever of a self acting mule substantially as
and for the purposes herein described and as illustrated by the accompanying
Drawings.
4. The method of making the carriage gear change lever of a self acting mule in
say two parts and connecting said parts together by a spring or springs substantially
as and for the purposes herein described with reference to Fig. 4.
5. The combination with the long lever and the stud or equivalent thereon, of the
pivoted carriage gear change lever having a slot for the said stud to work in and
formed in two or more pieces connected together by a spring or springs said parts
being arranged as a safety device for operating a catch box or equivalent means for
imparting motion to the backshaft substantially as and for the purposes herein set
forth.
6. The several constructions combinations and arrangements of parts embodying my
Improvements in self acting mules substantially as and for the purposes herein
described and as shown.
H. B. BARLOW,
17, St. Ann's Square, Manchester,
Agent for Applicant.

page_text: Date of Application, 19th Feb., 1887
Complete Left, 18th Nov., 1887
Complete Accepted, 20th Dec., 1887
other Fibrous Materials.
I BENJAMIN ALFRED DOBSON, Machine Maker, of Kay Street Works, Bolton in
the County of Lancaster, do hereby declare the nature of said Invention for
IMPROVEMENTS IN SELF-AOTING MULES FOR SPINNING COTTON WOOL AND OTHER
FIBROUS MATERIALS, to be as follows:-
My improvements relate to self-acting mules and have for their principal object to
obtain more certain and expeditious changes in those mules known as long lever
mules.
To effect this I have on the quadrant band shaft at the front of the headstock a
small pinion gearing into a spur wheel which has attached to it a scroll or snail. A
bowl on a pivoted lever engages this scroll and thus the lever receives an upward and
downward movement which it transmits to a slide fitted and free to move vertically in
a slideway beneath the end of the long lever to which the slide is connected by two
spiral springs one a closed spring and the other an open spring.
During the outward run of the mule carriage and before the first change is made
the open spiral spring is compressed by the revolution of the quadrant band shaft
driving the scroll and raising the pivoted lover and slide so that when the catch is
withdrawn at the moment of making the first change the compressed spring exerts
its force and rapidly and certainly moves the long lever the distance required to make
the first change leaving sufficient compression in the spring to effect the second
change when the catch is again withdrawn during the outward run.
3
During the inward run of the mule carriage the quadrant shaft turns in the other
direction and the pivoted lever and slide are depressed thereby extending the coiled
or closed spring so that when the carriage arrives at the end of its inward run there
is sufficient power in the spring to make the third or last change when the catch is
withdrawn. At the back end of the long lever I have a stud or bowl working in a
lever pivoted near one side of the headstock. This pivoted lever is made in say two
parts connected together by a closed spiral spring and one extremity of the lever
has a fork which enters the groove in a catch box on the back shaft.

page_text: When the first change of the long lever is made the catch box will be drawn out
of gear thereby stopping the revolution of the back shaft.
When the second change takes place the slot in the pivoted lever will be in a direct
line with the line of motion of the stud or bowl on the long lever and thus no
further movement will be imparted to the catch box.
When the third change takes place the catch box will be instantly moved back
into gear and the back shaft again turned.
Should the catch box strike tooth and tooth or should the carriage be impeded in its
outward course by any excessive resistance the spring will yield sufficiently to allow
the catch box to slip out of gear.
H. B. BARLOW,
Agent.
COMPLETE SPECIFICATION.
Improvements in Self Acting Mules for Spinning Cotton, Wool,
and other Fibrous Materials.
I BENJAMIN ALFRED DOBSON Machine Maker of Kay Street Works Bolton in the
County of Lancaster, do hereby declare the nature of said Invention for IMPROVE-
MENTS IN SELF ACTING MULES FOR SPINNING COTTON WOOL AND OTHER FIBROUS
MATERIALS, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
--
My improvements relate to self acting mules and have for their principal object to
obtain a more certain and expeditious method of making the changes in those mules
known as Long Lever Mules.
And in order that my Invention may be fully understood and readily carried into
effect I will describe the accompanying three Sheets of Drawings reference being had
to the figures and letters marked thereon.
Figure 1 is a side view and Fig. 2 a plan of part of a self acting mule to which my
Improvements are applied. Fig. 3 is a similar view to Fig. 1 but some of the parts
are shown in different positions and others are omitted. Fig. 4 is an elevation partly
in section of the improved arrangement of mechanism which I employ in conjunction
with the long lever to control the rotation of the back-shaft. Fig. 5 is a detailed
view of some of the parts shown in Figs. 1 and 2 and Fig. 6 is a view on a smaller
scale but showing the whole of the long lever.
Referring first to Figures -1,-2 and 3.-a-designates the. quadrant band-shaft and
1

page_text: b the headstock. On the shaft a I mount a small pinion al gearing into a spur wheel c
which has attached to or formed on it a scroll or snail e indicated by dotted lines
Fig. 1.
A lever e is pivoted at e¹ to the headstock 6 and a bowl 2 on this lever
engages the scroll c¹ whereby the lever e receives an upward and downward move-
ment.
At the end of the lever e shown best in Fig. 5 is a slot into which enters a
stud ffixed on a slide f which is fitted and free to be moved vertically by the
movement of the lever e in a slideway fixed on the framing beneath the end of the
ordinary long lever g to which the said slide is connected by two spiral springs hand i
respectively of which is a closed spring and i is an open spring. The two weighted
catch or latch levers are pivoted as usual to the headstock and are operated in the
ordinary way to hold or release the long lever as is well understood.
During the outward run of the mule carriage (which is not shown on the Drawings,
and before the first change is made when the parts are in the relative positions
indicated by Fig. 3 the open spiral spring i is compressed by the revolution of the
quadrant band shaft a driving the scroll c³ and raising the pivoted lever e and slide
so that when the catch on the latch lever j is withdrawn at the moment of making the
first change the compressed spring i exerts its force and rapidly and certainly moves
the long lever g the distance required to make the first change leaving sufficient
compression in the spring i to effect the second change on the withdrawal of the catch
on the latch lever during the outward run the parts at the moment of withdrawal
being in the relative positions shown in Fig. 1.
During the inward run of the mule carriage the quadrant shaft turns in the other
direction and reverses the rotation of the scroll c¹ thereby depressing the pivoted
lever e drawing down the slide and extending the coiled or closed spring / so that
when the carriage arrives at the end of its inward run there is sufficient power in the
spring to make the third or last change when the catch on the latch lever j¹ is
withdrawn.
Referring now to Fig. 4.-At the back of the long lever g I have a stud or bowl k
working in an open slot in a lever fulcrumed at near one side of the headstock.
This lever is made in say two parts as shown the parts being connected together by
a closed spiral spring m and one extremity of the lever has a fork 12 which enters a
groove in the boss n of a catch box n'n². The part n' of the catch box is mounted
loosely and is free to slide on the backshaft o while the part n² is mounted loosely on
a flanged bush p which is keyed on the shaft o. The part n which is driven by
gearing not shown is held in position on one side by the flange of the bush P and on
the other side by a collar o' fixed on the shaft o. The part n' has lugs or equivalents n³
on its inner face which engage corresponding slots or equivalents p¹ on the face of
the bush p so that when the teeth n on the part n are moved into gear with the
teeth no on the part n² the motion given to the part n² is transmitted by the part n¹
through the bush p to the backshaft o.
When the two parts n' n³ are moved out of gear i.e. the teeth n disengage the
teeth n the part n¹ the bush p and the backshaft o are all stationary but the lugs n³
still engage the slots p¹.
When the first change takes place the stud or bowl k on the long lever g acting on
the pivoted lever draws the part n' of the catch box out of gear with the part n²
thereby stopping the rotation of the backshaft.
When the second change takes place the slot in the lever is in a direct line with
the line of motion of the stud or bowl k on the long lever and thus the backshaft o
remains stationary as no farther movement is imparted to the lever and the
catch box.
When the third change takes place the stud or bowl k acting on the lever / raises it
into the position indicated by dotted lines and instantly moves the part n¹ into gear
with the part n² and thus causes the catch box to again drive the backshaft o.
Should the catch box strike tooth and tooth or should the carriage be impeded in its
outward course by any excessive resistance the spring m will yield sufficiently to allow
the teeth n on the movable part n¹ of the catch box to slip in and out of gear with
the teeth n on the rotating part n³.

page_text: Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what I
claim is―
1. The combination with the long lever of a self acting mule, of an arrangement of
open and closed springs for the purpose of assisting and expediting the action of said
lever in effecting the various changes substantially as herein set forth.
2. The combination with the long lever of a self acting mule, of open and closed
springs connected to a slide to which a vertically reciprocating motion is imparted as
required from the quadrant band shaft substantially as and for the purposes herein set
forth.
3. The combination with the quadrant band-shaft and a scroll or snail actuated
therefrom, of a pivoted rocking lever or equivalent operating a vertical slide connected
by open and closed springs to the long lever of a self acting mule substantially as
and for the purposes herein described and as illustrated by the accompanying
Drawings.
4. The method of making the carriage gear change lever of a self acting mule in
say two parts and connecting said parts together by a spring or springs substantially
as and for the purposes herein described with reference to Fig. 4.
5. The combination with the long lever and the stud or equivalent thereon, of the
pivoted carriage gear change lever having a slot for the said stud to work in and
formed in two or more pieces connected together by a spring or springs said parts
being arranged as a safety device for operating a catch box or equivalent means for
imparting motion to the hackshaft substantially as and for the purposes herein set
forth.
6. The several constructions combinations and arrangements of parts embodying my
Improvements in self acting mules substantially as and for the purposes herein
described and as shown.