A New or Improved Automatic Mechanical Stop Motion for Machines.
Year: 1889

page_text: Date of Application, 29th Jan., 1889
Complete Specification Left, 28th Oct., 1889-Accepted, 30th Nov., 1889
PROVISIONAL SPECIFICATION.
A New or Improved Automatic Mechanical Stop Motion for
Machines.
I, ROWLEY JEX-LONG, of Thornwood, Millerston, Lanarkshire, Agent, do hereby
declare the nature of my invention to be as follows:-
My Invention comprises a new or improved automatic periodical mechanical stop
motion for machines or mechanism, whether driven from their motive power
revolving shafts through toothed or friction wheels or belts and pulleys; and suitable
for stopping the mechanism when it has run for any required time from being
started by the attendant to wind up, or traverse a band for its required length,
irrespective of the speed or stoppages which may have taken place to the mechanism
during the traversing of the band. And in this way will be most applicable to the
machines used for the winding of the double band coils of match splints into frames
for dipping their ends into the inflammable composition and after treatment, so as to
stop the machine and give an audible signal, when each coil has been completed, so
that the attendant may come and remove the work and re-start the machine, and in
this way be enabled to attend to a number of machines. This improved automatic
stop mechanism, according to one arrangement, as applied to a double band match
splint scroll winding machine, consists of a rocking lever fulcrumed over the
disengaging mechanism proper, having on its longer free end a stud and roller
resting and rolling on one or other of the said two bands, when the machine is set
in motion, and having beyond its fulcrum end a short disengaging lever, projecting
downwards, or at right angles to the said longer horizontal weighted actuating arm
some little distance in front of a spring locking catch lever or bar, which takes into
a locking notch in a transverse sliding bar working in guides across the frame.
the one side of the frame, this bar has a handle, ani therefore may be termed the
hand engaging or disengaging stop bar. The other end of this bar is connected by
a pin to one arm of a horizontal beam lever fulcrummed on a bracket outside the
driving gearing side of the frame. The other end of this horizontal beam lever, which
1 term the clutch lever, has a forked end mounted on it, working in a turned groove
in the shifting clutch of the first motion driving shaft, or equivalent shaft of the
machine desired to be disengaged from the motive mechanism to be stopped. This
clutch is mounted to slide by a groove and feather on the driving shaft, and may
be either a gab clutch, or a friction clutch, having its face to engage into a
corresponding clutch on the boss of the wheel or pulley transmitting the motion to
the part of the machine required to be stopped. This wheel or pulley is thus
mounted loose on the shaft, and only driven when the lever clutch is in gear with it.
A strong spring on the one arm of this lever, or it might be on the sliding hand
bar, always keeps this clutch in gear when not pulled back by hand, and held out of
gear by the locking catch behind the heel end of the disengaging weighted lever.
At
This disengaging mechanism acts by the automatic falling motion of the long arm
of the first acting lever, as soon as the web on which it rests is wound up past its
carrying roller, and causes its short heel arm to throw the locking spring catch out of
the notch in the sliding hand bar, allowing the strong spring on the clutch lever
to pull this latter out of action and at once stop the wheel or pulley mounted loose
in front of the clutch, all as soon as the winding band on which the automatic
weighted disengaging lever rested, had been coiled up past the roller of the lever ;
and the falling of this lever may also be made to disengage a spring bell and ring
it to warn the attendant that the machine is stopped, so that he may come and
remove the roll or work and restart another, and raise and reset the disengaging
lever over the traversing new band inserted. In some cases, where there was not a

page_text: band passing through the machine, capable of bearing up the weight of the
disengaging lever, a special endless band might be passed over pulleys mounted in
the machine for the purpose, traversed at a slow differential speed proportionate to
that of the rollers traversing the material of the machine to be measured during the
time of the machine's running and before it was required to be stopped, this special
band being made strong enough to bear up the weight of the roller and free end of
the weighted disengaging lever, but have a gap in it which would allow the roller
to fall to pass through, and the lever to fall sufficient to disengage the locking catch
of the stop clutch mechanism.
1000
COMPLETE SPECIFICATION.
A New or Improved Automatic Mechanical Stop Motion for
Machines.
I, ROWLEY JEX-LONG, of Thornwood, Millerston Lanarkshire, Agent, do hereby
declare the nature of my invention, and in what manner the same is to be performed
to be particularly described and ascertained in and by the following statement in
writing, reference being had to the accompanying Sheet of Drawings and to the
letters and figures marked thereon, that is to say :-
My Invention comprises a new or improved automatic periodical mechanical stop
motion for machines or mechanism, whether driven from their motive power
revolving shafts through toothed or friction wheels, or belts and pulleys; and
suitable for stopping the mechanism of the machine driven from its main or first
motion shaft when it has run for any required time, from being started by the
attendant to wind up, or traverse a band for its required length, irrespective of the speed
or stoppages which may have taken place to the mechanism during the traversing of the
band. And in this way will be most applicable to the machines used for the winding of
the double band coils of match splints into frames for dipping their ends into the
inflammable composition and after treatment, so as to stop the machine and give
an audible signal, when each coil has been completed, so that the attendant may
come and remove the work and restart the machine, and in this way be enabled to
attend to a number of machines.
And in order that my said Invention and the manner of performing or carrying
the same into effect or practice may be properly understood, I have hereunto
appended an explanatory Sheet of Drawings, in which the same reference letters are
used to indicate the same or like parts in all the figures where shown. Figure 1 is
a side elevation partly in section, of a double band match splint scroll winding
machine, with the front side frame A removed to show the parts more clearly, and
Figure 2 is a plan corresponding to Figure 1 of the same machine with parts of the
two side frames A, A¹, broken away as indicated at z, and fitted with and
illustrative of my improved automatic stop mechanism as applied to this class of
mechanism.
Referring to these Drawings:-The machine consists of two side frames A, A',
carrying the first motion driving shaft A2 in bearings at A" actuated by a band and
pulley A³ from any motive power shaft of the works below or above, not shown in
the Drawings. These frames A, A', also carry in a usual self-contained manner all
the other driving shafts of the wheel and band gearing of the machine through the
main shifting clutch B taking into a corresponding coupling clutch B₁ on the loose
revolving power transmitting pulley B2, mounted on the same first motion shaft A²,
which pulley B through band pulleys and gearing B³, B, drives all the feeding
gearing and spindles of the splint wheels or pulleys D, E, F, of the machine
which feed the splints from the hopper G, on to and between the two scroll winding
bands Hand I. The former band H is drawn off from a previously wound scroll
mounted loose on a spindle on a rotating disc at H' projecting up from an angled

page_text: platform at the back of the machine, through a guide slotted arm H² and
under a guide pulley H³ over a friction drawing band and pulleys H below and
up round the front of the last delivery splint feeding wheel F which rolls up the
splints into the double scroll band on a bobbin J carried on a spindle J¹ in the
extreme free upper end of an oscillating curved arm lever J' fulcrumed loose
on a spindle J³ mounted in the frames A A¹ near the lower back end of the machine,
which spindie J3 by wheels J1 and a band and pulleys J gives a slow motion to
the spindle J' from the first motion shaft A². The band I (which is generally
lighter than the former H) previously rolled into a scroll is mounted loose on a
stud and bobbin at l projecting from the said lever J" near the back of the
machine (considerably over the inner band H) from which it is led through
the upper division of the guide arm H2 over the bobbin J, where both ends of
the bands H and I are secured in a slot in the edge of the bobbin to commence the
winding up of these bands H and I and the scroll j on the bobbin J with the
splints fed in at j¹ from the hopper G and wheels D, E, F, between the two bands H
and I, the weight of the lever J keeping the scroll of splints and bands always
down on the splint feeding roller F, as it is being filled and wound up with the
splints, all so far as seen particularly and indicated by the arrows in Figure 1. My
improved automatic stop mechanism for stopping the machine when the scroll; has
been fully wound up and the band I come to an end, consists of a rocking lever a
fulcrumed loose on the spindle a", or it might be any stud centre over the
disengaging mechanism proper, having mounted on its longer free end a stud and
antifriction roller a resting and rolling on the band I as shown, or it might be on
the band H when the machine is set in motion, and having beyond its fulcrum end a
short disengaging lever a projecting downwards, or nearly at right angles to the
said longer horizontal weighted actuating arm some little distance in front of a
spring locking catch lever b, b, mounted on a fixed fulcrum stud bracket at 11
This
inside the frame A' with a pressing spring blade 2 mounted behind it.
lever has a lateral catch &' on its front end near the frame A, taking into a
locking notch e¹ on the hand disengaging slide bar c carried in slide slotted
brackets at c in the two side frames A, A¹. At the front of the frame A, this
bar c, c', has a handle c² and therefore may be termed the hand and automatic
engaging or disengaging stop bar. The other end of this bar c, c', is connected by
a pin and joint at c³ to one arm d of a horizontal beam lever d di, fulcramed on a
bracket d secured outside the frame A' at the back driving gearing side of the
machine. The other arm d¹ of this horizontal beam lever d, d', which I terin
the clutch lever, has a forked end mounted on it, working in a turned groove in
the shifting clutch B of the first motion driving shaft A² or equivalent shaft
of the machine desired to be disengaged from the motive gearing B₁ to F of
the machine before mentioned to be stopped. This clutch B is mounted to slide
by a groove and feather on the driving shaft A2, and may be either a gab clutch,
or a friction clutch, having its face to engage into a corresponding clutch B' on the
boss of the wheel or pulley B² transmitting the motion to the mechanism of the
machine required to be stopped. This coupling B₁ and pulley B2 is thus mounted
loose on the shaft A² and only driven when the lever clutch B is in gear with it.
A spiral or other spring d² on the arm d¹ of this lever d d', or it might be on
the sliding hand bar c, c', acts to keep this clutch B out of gear when free to do so,
that is as indicated by dotted lines in Figure 2 when not pulled back by the hand bar c, c',
and held in position by its catch lever d¹. This disengaging mechanism acts by the
automatic falling motion of the long arm and roller a, a', of the first acting
lever a, a, as soon as the band or web I on which it rests is wound up past its
carrying roller a¹, and causes its short heel arm and pin a² to come down on a
projecting arm 63 of the bar bb and throw the locking spring catch b' out of the
notch c, in the sliding hand bar c, c', allowing the spring on the arm d' of the
lever d d to pull the clutch B out of its coupling B and at once stop the wheel or
pulley B mounted loose in front of the clutch, and all the gearing driven by it
as soon as the winding band I, on which the automatic weighted disengaging

page_text: lever a, a¹, a², rested, had been coiled up at Jj past the roller a¹ of the lever a;
and the falling of this lever a a' a² may also be made to disengage the hammer
of a spring bell and ring it to warn the attendant that the machine is stopped, so
that he may come and remove the roll or work, and restart another roll and
raise and reset the disengaging lever a, a¹, a², over the traversing new band I
inserted.
In some machines and cases, where a certain length of band had to be coiled up
or measured and where there was not a band passing through the machine, capable
of bearing up the weight of the disengaging lever, as shown in detached elevation
Figure 3, a special endless band i might be passed over pulleys ¹, mounted in the
machine for the purpose, traversed as indicated by the arrows at a slow differential
speed proportionate to that of the rollers traversing the material of the machine to be
measured or wound up during the time of the machine's running and before it was
required to he stopped; this special band i being made strong enough to bear up the
weight of the roller a¹ at free end of the weighted disengaging lever a, a', a², but
have a small gap formed in the one edge of the band i, which would allow the roller a¹ to
fall or pass through, and the lever a, a, a, to fall sufficient to disengage the locking
catch b, b, of the stop clutch mechanism c, to ², as described in reference to
Figures 1 and 2. Or otherwise vice versa instead of a gap being formed in the
band at a projection may be formed or secured on it as shown in Figure 3,
which would raise the lever a a¹ a² and disengage the catch 61 of the spring lever b,
out of the catch c¹ of the rod c in the reverse direction to that shown in
Figures 1 and 2, and allow the spring d² to pull the clutch B out of
action.
Other equivalent intermediate arrangements of spring catch and disengaging
levers than those described by the italic letters 6 to d may be used, actuated by the
new or improved falling or raising lever a, a¹, a², from the band being traversed, to
disengage the driving clutch and stop the mechanism of the machine all in the new
or improved manner herein described.
This new or improved automatic stop motion by stopping the machine when the
coil is fully wound up or length of web desired to be measured traversed, or
removed off, irrespective of the speed of the machine or the stoppages which may
require to take place will enable one person to attend to a great number of machines
without waste or danger to the mechanism or the material being fed or traversed
through it.
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 :-
First. The construction, or arrangement and combination of the parts of an
automatic mechanical disengaging and stop motion for machines substantially as and
operated in the manner and for the advantages herein described in reference to and
indicated under italic letters in the accompanying drawings.
Second. In an automatic stop mechanism for machines, the combination and use
of a lever a, a¹, a², raised or lowered by the band material traversed through the
machine to disengage the driving clutch mechanism when such band has travelled
any desired distance, irrespective of the speed or stoppages of the moving parts of
the machine, or band traversed by it, substantially as herein described in reference
to and shown in the accompanying drawings.
Dated the 26th October 1889.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.