Improvements in Slow Driving Motions for Carding Engine Cylinders.
Year: 1889

page_text: * Date of Application, 16th Jan., 1889
Complete Specification Left, 15th Oct., 1889-Accepted, 16th Nov., 1889
[NOVIDIUNAT DE PITICATION.
Improvements in Slow Driving Motions for Carding Engine
Cylinders.
I JOHN MCQUEEN, of the firm of John Hetherington and Sons of Pollard Street,
Manchester, in the County of Lancaster, do hereby declare the nature of this Invention
to be as follows:-
My Invention relates to the means employed to obtain a reduced speed of revolution
of the main cylinder and doffer of a carding engine during the operation of grinding
the wire cards on such cylinders the object in so reducing the speed of revolution
being now well understood. In my improved apparatus I employ a differential
motion to effect the required reduction of speed. In the said motion an external
spur wheel is carried around in rolling contact with an internal spur wheel and is
attached to a second external spur wheel which gears with a second internal spur
wheel. The two internal spur wheels differ in the number of their teeth, and as the
first internal spur wheel is kept from revolving the second wheel is caused to revolve
but at a speed which is less than that of the part which carries around the first
external spur wheel. In the complete apparatus the first external wheel is mounted
pon an excentric or an excentrically disposed stud such excentric being fixed or
formed upon a shaft to which a quick revolving motion is imparted through a band
or belt acting upon a pulley upon the said shaft. Upon the same shaft is a pulley by
means of which motion is imparted to the grinding rollers. The said second internal
wheel is formed as a pulley or is connected with a pulley and a band or belt from this
pulley drives the doffer through the ordinary gearing or if preferred gearing might
be employed instead of the said pulley and band or belt. The main cylinder receives
motion from the doffer. The apparatus may be arranged to be permanently in
position upon the carding engine or be arranged to be readily mounted in position as
for example the parts may be carried by a stud or be mounted in a bracket adapted
to be bolted or secured to the undertraining or to the floor or partly to the framing
and partly to the floor. In the case of mounting the said parts upon a stud the
aforesaid shaft which receives the quick motion would be hollow.
Dated this 15th day of January 1889.
DUTTON & FULTON,
1, St. James Square, Manchester, Agents.
COMPLETE SPECIFICATION.
Improvements in Slow Driving Motions for Carding Engine
Cylinders.
I JOHN MCQUEEN of the firm of John Hetherington & Sons of Pollard Street,
Manchester, in the County of Lancaster, 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 :-
My Invention relates to the means employed to obtain a reduced speed of revolution
of the main cylinder and doffer of a carding engine during the operation of grinding
the wire cards on such cylinders the object in so reducing the speed of revolution
being now well understood. In my improved apparatus I employ a differential motion
to effect the required reduction of speed. In the said motion an external spur wheel
is carried around in rolling contact with an internal spur wheel and is attached to a
second external spur wheel which gears with a second internal spur wheel. The two
¡nternal spur wheels differ in the number of their teeth and as the first internal spur
D
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page_text: wheel is kept from revolving the second wheel is caused to revolve but at a speed
which is less than that of the part which carries around the first external spur
wheel.
In order that the manner in which 1 carry my Invention into effect may be clearly
understood 'I will describe the same more fully with reference to the accompanying
drawings.
In the said drawings Figs. 1 and 2 of sheet 1 respectively represent a front view
and a side view of my slow motion apparatus the latter Fig. being principally a
section on the line A. A in Fig. 1. The drawing on sheet 2 illustrates the method of
application of the apparatus to a carding Engine.
In Figs. 1and2a-is a-circular-metal case which is provided with a central boss a¹
and is formed with an internal ring of spur teeth a² so as to form what-is-known as
an internal spur wheel. The boss a' is bored to receive a shafi or spindle upon
which is formed an excentric collar 6. Upon one end of the said shaft is keyed or
fixed a band pulleye and upon the other end is loosely mounted a band pulley d. The
pulley is formed in one piece with a second internal spur wheel d¹. The wheel d' is
larger in diameter than the wheel a². The excentric collar is turned to receive a
double external spur wheel which is formed with two sets of teeth e. e¹ so as to con-
stitute two spar wheels one larger in diameter than the other the difference between
their diameters being about the same as in the case of the internal wheels a³ and d.
The external wheels are necessarily smaller in diameter than the internal wheels with
which they gear. The excentricity of the boss is equal to the difference between
the radius of either of the external spur wheels and the-wheel-with-which it is in gear
measured on the pitch lines as is usual. This being so it will be seen that when thic
shaft is revolved the double wheel e. e is carried around the axis of the said shaft
the smaller external wheel continuing in rolling gear with the wheel a owing to the
fact that the axis of the external wheels is carried around the common axis of the
shaft and of the internal wheels. The result of the arrangement is that during
each revolution of the shaft the double wheel e. el will revolve upon its axis to an
extent equal to the difference between the circumferences of the wheels a² and e¹.
In the example from which the drawings were made the wheel a has 46 teeth and-
the wheel e', 41 the wheel e baving 42 and the wheel 48 teeth. With wheels of
these proportions very nearly 54 revolutions of the shaft would be required to
produce one complete revolution of the wheel d'and as a consequence of the pulley d.
Upon the periphery of the case a is formed a lug or projection which is extended in
the form of a tubular boss. This lug is hored to be about parallel with the axis of the
shaft b the size of the hole in the lug being made suitable to the stud or part upon
which the apparatus is to be mounted.
In Fig. 3 the apparatus is shown as being mounted or hung upon a study. This is
the stud upon which are ordinarily mounted the band pullies which are intermediate
between the band pulley upon the main cylinder shaft hand the pulley upon the comb
shaft. These intermediate pullies are indicated by the dotted circles i.
Preparatory to the grinding operation the said intermediate pullies are slipped off
the stud and the slow motion apparatus a is applied in their place as represented in the
drawing,
"On the outer edge of the loose pully j is usually formed a band groove whereby the
grinding roller is driven. This groove I utilise to drive the slow motion apparatus by
means of a band k which runs in one of the two grooves in the pulley c.
A
The grinding roller is or may be driven from the other of the said two grooves.
second band connects the pulley d seen in Fig. 2 with the band pulley m which is
fixed upon the shaft and which in the ordinary working of the engine actuates the
said intermediate pullies i. It will be seen that as the pulley d is less than the
pulley c and the pulley mis larger than the pulley j the speed of the main cylinder
will be reduced to a greater extent than what is merely due to the action of the
differential gearing so that in effect the grinding speed of the main cylinder is
reduced to about one and three quarter revolutions per minute or to less than one
eightieth of its ordinary working speed.

page_text: This proportionate speed may however be varied by altering the relative pro-
portions of the pullies c and d or of the internal and external spur wheels or of
both. The apparatus might be mounted upon a special stud or bracket provided
for the purpose or upon a suitable part of the engine according to the circumstances
in each case or if preferred it might be fixed to the floor or be made sufficiently
heavy to rest steadily upon the floor the shape of the case a being varied as may
be deemed or considered to be suitable. The apparatus as illustrated is designed
to be portable so that it can be carried from one engine to another thus serving
for several engines, but if preferred it might be permanently attached to the engine.
During the grinding of the doffer the doffer shaft may be connected with the main
cylinder shaft by means of a band n as has been done previously to my invention.
If preferred the slow motion apparatus might impart. motion in the first place to
the doffer shaft which would be connected with the main cylinder shaft by means
of the band or in a suitable manner. In such a case gearing might be employed
to connect the wheel d' with the doffer shaft.
In my provisional specification I mentioned that the shaft might be made
hollow to receive the stud g or other stud upon which the apparatus would be
mounted and such might be the case but I now prefer to provide a lug for the
purpose as in the drawings.
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 apparatus constructed substantially as and for the purpose set forth and
indicated hereinbefore and in the accompanying drawings.
2. A slow motion apparatus for carding engines provided with the differential
gearing a² el c and d constructed and acting substantially as set forth.
3. A slow motion apparatus for carding engines adapted to be applied as an
intermediary between the ordinary driving apparatus and the main cylinder or
doffer such apparatus being provided with a pair of differential spur wheels excen-
trically mounted upon a central shaft and carried around so that one wheel is in
rolling gear with a fixed internal wheel and the other spur wheel is in gear with
a second internal wheel which imparts the motion reduced in speed to the main
cylinder or doffer substantially as set forth.
4. As means for obtaining slow rotation of carding engine cylinders the apparatus
substantially as set forth with reference to Figs. 1 and 2 adapted to be applied
upon a stud fixed to the Carding Engine framing substantially as indicated in
Fig. 3 of the drawings.
Dated this 14th day of October 1889
DUTTON & FULTON,
1, St. James Square, Manchester, Agents.