Improved Revolution Counter and Stop Motion for Power Driven Machines.
Year: 1895

page_text: Date of Application, 18th Jan., 1895
Complete Specification Left, 18th Oct., 1895-Accepted, 7th Dec., 1895
PROVISIONAL SPECIFICATION.
Improved Revolution Counter and Stop Motion for Power Driven
Machines.
I WILLIAM INGRAM JAMES, of Green-End House, Stafford, in the County of
Stafford, Engineer do hereby declare the nature of this invention to be as
follows:-
My improved revolution counter consists of a worm wheel driven by a worm
attached to any convenient revolving part of the machine and actuating a chain
wheel and chain upon which are attached lugs at any desired intervals.
These lugs as they are brought round by the moving chain engage in turn with
a lever so arranged as to liberate the belt fork or driving clutch which by means
of a spring is moved so as either to shift the belt on to the loose pulley of the
machine or release the driving clutch as the case may be.
I provide a suitable handle for moving the belt fork opposite to the driving
pulley or putting the driving clutch into engagement and a catch for holding it
there until released by the movement of the counting chain.
In cases where it is required to count a large number of revolutions before
stopping the machine, in order to avoid an inconvenient length of counting chain,
1 interpose between the main driving worm wheel of the counter and the chain
wheel a train of gears which may be either spur gears, bevel gears or worms and
worm wheels for the purpose of reducing the number of revolutions of the chain
wheel with a consequent reduction in the length of the counting chain required.
In machines in which it is more convenient to make use of a reciprocating
movement to count from, the first motion worm and worm wheel may be replaced
by a pawl and ratchet wheel.
In order to allow the counting chain to be moved by hand independently of the
counter itself 1 provide means by which the chain wheel may easily be disconnected
from the rest of the counter and revolved by itself until it is desired to again
connect it to the mechanism of the counter.
Dated this 17th day of January 1895.
Improved Revolution Counter and Stop Motion for Power Driven
Machines.
I WILLIAM INGRAM JAMES, of Green End House, Stafford, in the County
of Stafford, 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 :-
My improved revolution counter and stop motion consists of a worm wheel
driven by a worm attached to any convenient revolving part of the machine and
actuating a chain wheel and chain upon which are attached lugs at any desired
intervals.
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These lugs as they are brought round by the moving chain engage in turn with
a lever so arranged as to liberate the belt fork or driving clutch which by means
1.!

page_text: of a spring is moved so as either to shift the belt on to the loose pulley of the
machine or release the driving clutch as the case may be.
I provide a suitable handle for moving the belt fork opposite to the driving
pulley or putting the driving clutch into engagement and a catch for holding it
there until released by the movement of the counting chain.
In cases where it is required to count a large number of revolutions before
stopping the machine, in order to avoid an inconvenient length of counting chain,
I interpose between the main driving worm wheel of the counter and the chain
wheel a train of gears which may be either spur gears, bevel gears or worms and
worm wheels for the purpose of reducing the number of revolutions of the chain
wheel with a consequent reduction in the length of counting chain required.
In machines in which it is more convenient to make use of a reciprocating
movement to count from the first motion worm and worm wheel may be replaced
by a pawl and ratchet wheel.
In order to allow the counting chain to be moved by hand independently of the
counter itself I provide means by which the chain wheel may easily be disconnected
from the rest of the counter and revolved by itself until it is desired to again
connect it to the mechanism of the counter.
My invention is illustrated by the accompanying drawings in which :-
Fig. 1. is a front elevation of a counting mechanism and stop motion.
Fig. 2. is a side elevation of the same.
Fig. 3. is a section shewing the chain wheel and sleeve.
Fig. 4. is a horizontal section shewing the starting handle and retaining catch.
Figs. 5 and 6 are sectional elevations shewing parts of the same.
Figs. 7. 8 and 9 are different forms of lug.
Fig. 10. shews a pawl and ratchet wheel for counting reciprocating movements.
The driving belt a (Figs. 1 and 2) runs in the direction shewn by the arrows and
communicates motion to the driving pulley a' shaft a² and gear wheel a³ so as to give
movement to the machine which may be a circular knitting or other machine and
in the drawings is represented by a portion of a frame b.
The shaft a runs in a bearing 61 and has formed upon it a worm c which gears
into a wheel c¹ carrying a pinion c² upon a stud d.
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The pinion gears into another wheel c³ which is mounted upon a stud d'. The
wheel (see also Fig. 3) is formed with a long sleeve c* and runs loose upon the
stud . It is furnished with a cone e and carries a chain wheel which by means
of a thumb nut screwed upon the sleeve et can be cramped fast upon the cone e
so as to be driven by the wheel c³ or can be released therefrom so as to turn freely
upon the sleeve c* as desired.
The chain is carried upon the wheelf and has mounted upon it the lug ƒ³
which actuates the stopping movement.
When it is necessary to count a large number of revolutions other gears or
worms and wheels may be introduced between the worm c and the wheel so as to
avoid using an inconvenient length of chain for if only a few revolutions are to
be counted the chain wheelf may be mounted directly upon the gear wheel c¹ and
the pinion and wheel c³ may be dispensed with.
The object of the nut f¹ is to allow of turning the chain wheel fƒ by hand and
setting the lug ³ in any desired position.
The machine illustrated is belt driven and is shewn with the belt a upon the driving
pulley a' the loose pulley a being unoccupied. The belt fork g (see Fig. 4) is carried
upon the sliding barg' and is moved so as to start the machine by operating the handleg
which is mounted upon the pivot g' and engages the bar g'. A notch (Figs. 4 and 6) is
formed in the bar g' which is engaged by the catch h¹ so as to retain the bar g' and
hold the machine in gear against the spring 2. The catch is held in the notch h
by means of a spring h³ (see Fig. 6) and until the catch is released the machine
will continue to run. The releasing of the catch is accomplished as follows :—
The chain driven by the machine moves in the direction indicated by the
arrows and the lug f³ ascends until it comes in contact with the point i of the
".

page_text: piece which is mounted upon the pivot 2 and engages by means of the notch 23
the handle of the catch h¹ which is mounted upon the pivot h³ and as before
stated retains the bar g' in gear.
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The ascending lug f3 lifts the piece and handle h until the catch
completely withdrawn from the notch h when the bar g' now released is made to
slide by the influence of the spring 2 and the fork g shifts the belt a from the
driving pulley a¹ to the loose pulley a* and the machine stops.
When the machine is again started by means of the handle g2 the lug ƒ³ soon
passes the point i, the catch is again pulled into the notch h by means of the
spring and the machine continues to run until the lug f³ or another one upon
the chain f again raises the piece i¹.
The handle is for the purpose of stopping the machine by hand at any desired
moment.
The lugs Figs. 7, 8, and 9 are of different lengths of point and this differing is
for the purpose of being able to stop the machine at different points in the length
of a chain link.
The pawl Fig. 10 and ratchet wheel k¹ are used when counting reciprocations
as on a flat knitting or other reciprocating machine. The pawl is carried on a
pink in the reciprocating part 3 and the ratchet wheel k¹ is mounted on a shaft k*
in the stationary part . Upon the shaft k is also mounted an equivalent of the
pinion already described which gears, either directly or through the intervention
of other gears, with the chain wheel gear c³.
The above described counting and stop motions may be used in conjunction with
clutches or other drivers as well as with belt shippers and if desired the usual
indicating dials and pointers may be applied so as to shew the number of revolutions
made.
The method of using the above described apparatus as a revolution counter is
as follows:-
The operator slackens the thumb nut fl and turns the chain wheelf by hand
until one of the lugs f lifts the piece as already described. He then tightens
the thumb nut and starts the machine by operating the handle 9. He now
counts the revolutions of the machine until the desired number are made at which
point he stops the machine by lifting the handle . He then takes another lug
similar to f³ or as illustrated in Figs. 7, 8 and 9 and fixes it to the chain f² so that
it just holds up the piece i'. If necessary he again starts the machine and counts
any desired number of revolutions, stops the machine and fixes another lug to the
chain which may be of any suitable length.
When a sufficient number of lugs f³ have been thus fixed upon the chain f' at
the proper intervals to suit the nature of the work in hand and the machine put in
motion the apparatus will continue to count again and again the same numbers of
revolutions as previously counted by the operator and will stop the machine every
time as soon as these revolutions have been counted.
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.
The revolution counter and stop motion for power driven machines as herein
described and illustrated.