An Automatic Apparatus, Indicator and Valves for the Prevention of Överwinding at Collieries and Mines.
Year: 1889

page_text: Date of Application, 15th July, 1889
Complete Specification Left, 5'h Apr., 1890-Accepted, 12th July, 1890
PROVISIONAL SPECIFICATION.
An Automatic Apparatus, Indicator and Valves for the Prevention of
Överwinding at Collieries and Mines.
CHARLES HERBERT COBBOLD, Rosehill Dodworth, Mining Engineer, WALTER
Wood 26 Concrete Wombwell, Engine Tenter, do hereby declare the nature of our
AND VALVES FOR THE
invention for AN AUTOMATIO APPARATUS, INDICATOR
PREVENTION OF OVERWINDING AT COLLIERIES AND MINES to be as follows
Consisting of a new automatic apparatus or arrangement fixed in any convenient
part of the engine house and connected to the engine whereby the engine is brought
to a standstill if the engineman fails, either from accident or any cause whatsoever.
to reduce the speed when the cage is approaching the pit top. Another part of the
apparatus is fixed at the pit top and will come into action if the engine man from
any cause whatsoever. after having properly reduced the speed fails to stop the
engine when the cage arrives at a set distance above the pit top. To accomplish
this we fix two metal pillars on a bed or frame connected at the top by a girder
on one pillar we pivot on a stud or bracket a flanged disc with a depression in one
side of the flange retiring towards the centre of the disc, this flange supports a rod.
When the engine is running at full speed, this rod is connected to or connects the
ends of two levers the other end of one lever is forined into a fork and works in con-
junction with a grooved bobbin that works on a perpendicular rod or shaft. To this
rod or shaft are attached two balls or governors by means of two arms or rods which
are secured to two other rods that are attached to the grooved bobbin that works on
the perpendicular rod or shaft. The end of the other lever is attached to the spindle
of a small steam slide valve by means of a connecting rod or any convenient means.
This slide valve when opened admits steam into a cylinder fitted with a piston and
rod this piston rod is connected to a valve so arranged that the steam is shut off from
the engine and simultaneously turned onto a steam brake which acts upon the
engine. The disc which is marked on its front face with a dial shewing the number
of strokes which the engine has made at any given time as well as the position of the
cages in the pit shaft is moved round by means of a worm and a wheel to which
motion is imparted by means of four mitre toothed wheels, (but it is by no means
necessary that the four mitre toothed wheels should be used to move the disc round
as this can be accomplished in a variety of ways such as a screw or a toothed sliding
bar or by a pinion wheel on the main shaft the four mitre toothed wheels are
merely given to illustrate one method in which motion can be imparted to the disc
but we do not confine ourselves to. this only but use any other method as may be
suitable or necessary:) one of the mitre wheels will work on the same shaft as the
worm actuating the disc, two on a shaft at right angles with the worm shaft and one
upon a horizontal rod or shaft passing through the pillar supporting the disc.
This horizontal rod or shaft is the main shaft of the apparatus one end of which is
connected to the engine as may be suitable or necessary. The other end is supported
by the same bearing or bracket that supports the perpendicular rod or shaft, on this
end of the horizontal shaft is keyed a bevel toothed wheel to work in another toothed
wheel keyed on the perpendicular rod or shaft to impart motion to the perpendicular
shaft and to the balls or governors attached to the shaft. On the top of the rod that
works on the flange of the dise and that connects the two levers a ball is fixed for
the purpose of overcoming the resistance of the pressure of the steam on the slide
5 valve. At the pit top on the pit hill are fixed two steain valves connected by pipes
to the cylinder of the apparatus in the engine house; the lever that opens one valve
will be fixed in such a position that if the cage ascends above the proper height over
the landing stage the cage in its ascent will be compelled to open this valve by
pushing up the lever of the valve and thus admitting steam into the cylinder of the

page_text: stop valve in the engine house; the other valve is for the purpose of allowing the
cage to be raised to any height above the landing stage when this is required for
repairs or any special object. It is by no means necessary to fix these valves at the
pit top they can equally well be placed in the engine house and worked by a lever
at the pit top by means of rods or other convenient manner, or the slide valve fixed
on the pillar of the apparatus can be opened by means of a lever thus dispensing
with the two valves altogether, the example of the two valves fixed at the pit top is
simply, given as a means of illustrating one method, but we do not confine ourselves
to this means only but adopt any other means as may be suitable or necessary.
Dated this Thirteenth day of July 1889.
CHARLES HERBERT COBBOLD.
WALTER WOOD.
COMPLETE SPECIFICATION.
An Automatic Apparatus, Indicator and Valves for the Prevention of
Overwinding at Collieries and Mines.
I CHARLES Herbert Cobbold of Dodworth in the County of York Mining
Engineer and WALTER WOOD of 28 Concrete Wombwell in the County aforesaid
Engine Tenter, 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:-
Our present invention relates to automatic apparatus used in connection with
winding engines for the prevention of over-winding in collieries and mines and the
object thereof is to render this class of apparatus more reliable and automatic in
action so that should the engineman fail to sufficiently reduce the speed of the
engine when the cage is approaching the pit top the engine is at once brought to a
standstill to attain which we employ a new or improved apparatus indicator and
valves which may either he worked from the crank shaft or other part of the winding
engine or may be automatically worked by the movement of the ascending cage.
We will proceed to more fully describe our invention by the aid of the
accompanying drawings which are to be taken as part of this specification and read
there with.
and valves.
Fig. 1 is a longitudinal elevation of our improved automatic apparatus indicator
Fig. 2 is a cross sectional elevation taken on line a, a. of fig. 1 and fig. 3 is a
longitudinal sectional elevational taken on line b. b of fig. 2.
Fig. 4 is an elevation illustrating two modified ways of working our improved
arrangement that is either automatically by the movement of the ascending cage
or non automatically and at the will of a person situated at or near the pit mouth.
Like letters and numerals of reference denote corresponding parts in each
illustration.
Referring to figs. 1, 2 and 3 we arrange and fix two vertical metal pillars C₁
and Cupon a frame D and connect the same at their tops by a girder E. In front
of the pillar C and secured to the frame D we erect a fixing on the face of
which we mark a suitable dial. The said fixing F and pillar C carry a shaft
whereon is keyed or secured a flanged disc H figs. 2 and 3 having a depression
fig. 3 and a groove 2 fig. 2. The said groove 2 receives a runner which is
carried at the end of the vertical rod J when the engine is running and the cage is
within the pit shaft. The rod J is preferably made with a long nut or screwed
sleeve in order that it may be adjusted in length as required. The ends k¹ and
of the levers K and I are hinged or connected to the rod J by pins as shown. The
lever L is fulcrumed at and carried upon the girder D its end 3 is of a fork shape
and bears freely between the flanges of the bobbin m² which is arranged in the
usual manner and worked by ordinary governors M.
at and also carried by the girder D and its end
suitable jaw and connecting rod N to the spindle
The lever K is fulcrumed
is connected by means of a
which works a small steam

page_text: valve P situated within a steam chest or valve box Q. The said box is arranged
with a steam port for the inlet of live steam a connection pipe and an exhaust.
port or branch q. The valve box Q communicates with a cylinder R by means of a.
connecting pipe and connection. Within the cylinder I is a piston S the
rods of which is coupled up to a suitable cut off slide valve T which works in the
steam chest or cut off valve box U. This box U is made with ports and t²
which conduct steam to the winding engine cylinder and steam brake respectively.
The dial upon the face of the fixing F is marked in the usual way in order to show
the number of revolutions male by the winding drum and the position of the cage
in the shaft and an index finger figs. 1 and 2 is secured to the shaft y in order to
indicate the same.
The groove or flanged disc H is revolved or caused to turn and the governors M
are worked when the winding engine is in motion preferably by means of the
following gearing. A horizontal driving shaft w is carried by the pillar and by a
bearing formed in the bracket c³ which is either made with or attached to the
pillar this driving shaft w may be either coupled direct to the crank or drum
shaft of winding engine as shown or it may be arranged in any other convenient
manner in order to have imparted to it the motion or proportional motion of said
shaft w.
The gearing 1, 2, 3, 4, is arranged as shown in order to drive a shaft y
carried by the bearings y³. To the shaft y is keyed or otherwise secured a worm y²
which gears with the worm wheel in order to impart the necessary motion to the
disc H and the index finger we however do not confine ourselves to this special
means of working the disc H as the same may be worked from the shaft w in any
other convenient or suitable manner.
The governors M are worked by the bevel gearing 5 and 6 and the governors'
spindle m² is carried in the bracket 3 as shown. The top part of the perpendicular
rod J receives a ball or weight in order to balance the slide valve P and its
friction.
Our improved automatic apparatus valves and indicator as described and illustrated
at figs. 1, 2 and 3 work as follows:-
When the winding engine commences to draw up the cage in the pit shaft the
runner at the end of the perpendicular rod J bears in the groove of the disc I
and so long as the same bears therein the governors M are unable to rise and cause
the valve P to be lifted in order to open the port q' but when the cage has arrived
at the pit top or thereabouts the runner or end of rod J comes
over the
depression on the disc H and unless the speed of the engine has been reduced
to the necessary extent or the engine is entirely brought to a standstill the action of
the governors Mimmediately lifts the levers L and K and so lifts the valve P within
the steam or valve chest and opens the live steam port q' thus giving a free
passage for the steam to the back of the piston S which is at once moved forward to
position shown at fig. 3 so that steam is cut off from the winding engine cylinder and
simultaneously conducted through the port t² to the steam brake by this means it
will be obvious that the risk of over-winding is entirely obviated.
Should the engine be brought to a standstill at the required time the governors
will necessarily not act and the automatic apparatus hereinbefore described will not
come into play.
After the piston S has forced the valve T over to port or to position shown at
fig. 3 and when it be required to again allow steam to pass through the port t' the
small tap is opened in order to allow steam to pass through the small pipe t¹ to
the back of the piston S thus driving the same to the other end of cylinder R. It
will be obvious that as soon as the engine stops the governors M fall and the valve P
covers up the steam port and simultaneously opens the exhaust branch y³ so that
the worked steam may readily escape therefrom. Referring to fig. 4 which illustrates
certain modifications in the application of our present invention we either arrange
the steam valve 10 and an exhaust valve not seen at the side of it the valve 10 allows
steam to pass to the cylinder R and the exhaust valve not seen is opened when the
steam is required to escape therefrom. The valve 10 may either be worked

page_text: automatically by means of the cage 11 which is caused to come in contact with a bell
crank 12 one end thereof being arranged with a runner for the purpose and the
other end connected by means of a rod to the valve spindle 9 which works the valve 10
or where preferred the valve 10 may be dispensed with in which case the steam chest
or valve is arranged within the engine house as shown in black and is connected.
to the lever 17 by the bell crank 12 and rod 15. The lever may have a part of the
bell crank 12 made with it and be caused to work automatically by the action of the
cage 11 or it may be arranged to be worked entirely at the will of a person situated
at or near the pit mouth. By the latter arrangement the cage will be allowed to
rise up any desirable distance above the pit mouth and securel in that position for
repairs or any other purpose.
Having now particularly described and ascertained the nature of cur said inven-
tion and in what manner the same is to be performed we declare that what we
claim is
1. In automatic apparatus used for the prevention of over-winding in collieries and
mines the combined arrangement substantially as described and illustrated at figs. 1,
2 and 3 of the drawings annexed or any mere modification of said arrangement.
2. In automatic apparatus used for the purpose specified the arrangement of a
valve 10 arranged near the pit mouth and automatically opened by the cage 11 in
combination with a cylinder R piston S slide valve T and steam chest U with ports t¹
and substantially as described and illustrated at fig. 4.
3. In apparatus used for the purpose specified the arrangement of a lever 17 and
rod 15 with bell crank 16 in order to control the valve P so as to stop the winding
engine from the pit mouth or near thereto as required substantially as described and
illustrated at fig. 4 of the drawings annexed.
Dated this 26th day of March 1890
H. F. BOUGHTON, M.I. Mech. E.,
Barnsley & Sheffield, Agent.