AN IMPROVED SAFETY STOP GEAR FOR STEAM AND OTHER ENGINES
Year: 1884

page_text: We JAMES BINNS No 79 Featherstall operative engineer, SAMUEL LORD CHADWICK
View Terrace Dearnley mill manager and THOMAS ASPINALL weaving manager all
near Rochdale in the County of Lancaster do hereby declare the nature of our said
invention for AN IMPROVED SAFETY STOP GEAR FOR STEAM AND OTHER ENGINES
to be as follows:-
منت
38
Our invention has for its object the arresting of the undue or dangerous velocity
of stationery engines which may be applied to and operate upon the throttle
equilibrium or other valve or arrangement admitting steam or other motive agent
into the valve chest or cylinder of the engine We are sensible of the many
accidents which occur by a sudden release of weight from the turning power of the
engine when such is the case in the absence of the attendant obviously results in
the attainment of a dangerous speed or as is generally termed "running away" of
the engine consequently in many instances serious accidents occur which our
invention is designed to obviate our invention further admits of controlling the
engine at any distant part from the house or place where the engine is situated.
Our apparatus consists of suitable cranks or levers attached to the spindle or
other connection controlling the opening or closing of the valve admitting steam or
other motive agent into the cylinder of the engine which valve is usually connected
to the governor rod and which we preferably desire to employ for the application
of our apparatus the cranks or levers are so arranged with relation to the governor
rod and fitted loosely so as to effect a disconnection between them when desired or
the disconnection may be effected between the cranks or levers and the valve
spindle for connection to accomodate the various types or positions of valves in use
the cranks or levers are adjusted parallel or at right angles to the governor rod as
desired upon the said rod we provide a projecting piece the office of which when
the governor balls expand or radiate from the axis of the governor spindle cause by
the increased speed of the engine a motion is given to the governor rod actuating
the valve as is well understood consequently the projecting piece which is suitably
adjusted on the rod engages with the projection of a weighted lever which is fixed
upon a pivot free to rotate its other extremity being suitably cranked and provided
with a suitable pulley being in contact with the governor rod at the time when the
projecting piece on the governor rod comes in contact with the projecting piece on
the weighted lever which weight is in the direction of the motion the balanced
weighted lever is caused to rotate upon the axis of the pivot depressing the
D

page_text: weighted extremity of the lever consequently the other cranked extremity elevates
the end of the governor rod connected with the crank or lever sufficiently so as to
disengage the recess in the governor rod with the projecting piece or stud on the
crank or lever attached to the valve controlling the admission of steam or other
motive agent to the cylinder we also provide in a suitable position on the said rod
another projecting piece the office of which is to actuate the projection on the
weighted lever which may be necessary in consequence of any defect with the
governors the crank or lever attached to the spindle of the valve being provided
with suitably adjusted weights so as to ensure an effective closure of the ports or
apertures in the valve immediately the crank or lever is released from the governor
rod thus the valve is effectually closed preventing the admission of steam or other
motive agent to the cylinder consequently stopping the engine.
We provide at any convenient part of the governor rod particularly at the part
where connected to the crank or lever attached to the valve a chain, cord, or other
suitable attachment so as to disconnect the governor rod from the crank or lever
which may extend to any adjacent or contiguous room or place as desired obviously
in the case of accidents or necessity the engine may be stopped by any person in
the room or place where the chain, cord, or other attachment is provided obviating
communication to the attendant or injury to the engine.
· Dated this 10th days of Tulu one thousand night hundred and nighter four

page_text: WC, JAMES BINNS of No 79, Featherstall operative Engineer, SAMUEL LORD
CHADWICK View Terrace Dearnley Mill manager and THOMAS ASPINALL Featherstall
weaving manager all near Rochdale in the County of Lancaster do hereby declare the
nature of our invention for AN IMPROVED SAFETY STOP GEAR FOR STEAM AND OTHER
ENGINES and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
Our invention has for its object the stopping by mechanical means of steam or
other engines when the same attain a high or dangerous velocity and being beyond
the control of the valve or valves admitting steam to the engine which may be
attributed to various causes consequently when the attainment of such dangerous
speed or velocity does occur in the absence of the attendant obviously results in
serious accidents which our invention is designed to obviate.
Our apparatus may be applied to the vertical or horizontal type of engine and is
adapted to be used to an ordinary throttle or equilibrium valve and when desired
may be applied to a cut off valve."
In order that our invention may be better explained and illustrated we refer to
the accompanying sheets of drawings.
Fig 1. represents a side elevation of our apparatus shewing our invention applied
to the spindle of a cut off valve.
Fig 2. is an end view of Fig 1.
Fig 3. being a plan thereof.
Fig 4. being a similar figure to Fig 1. shewing the position of our apparatus
with the connections of the governor of an engine released from the valve.
Our arrangement consists of a weighted lever A Fig 1. of the annexed drawings
being provided with a small pulley B at one extremity the pulley B is caused to
engage with the governor rod G conveniently by the agency of Weight or counter-
poise D the said weight being conveniently adjusted so as not to disturb the.
governor rod C when in its normal working position we provide the lever A with
projection or finger E we also provide on the governor rod conveniently a projecting
pin or pivot F the office of which is to engage with the finger or projection E on
the lever A at a time when the governor rod is caused to have a motion in the
direction of the weight D this motion may be due to the expansion of the governor
balls. A suitably arranged lever G being connected to a sleeve axially fitted on
the governor spindle as is well understood consequently the part of the lever G
connected to the sleeve on the governor spindle is raised when the governor balls
expand or radiate from the axis of the spindle which obviously is due to an
increased speed of the engine and causing the said lever to turn on its axis H its
vertical arm moving in a direction from the governor spindle and causing the rod
with which it engages to move in a corresponding direction or the pin or pivot F
may be provided at I suitably to engage with the finger or projection E in which
case the lever is reversed to accomodate a connection at the upper part of the
governor spindle J as may be desirable and as the case may be.
At the time when the pin F engages or comes in contact with the finger E the
equilibrium of the lever A. is destroyed causing the weighted end D to descend and
at its other end to ascend to the position as shewn in Fig 4. releasing the end of the
governor rod from the pin or pivot K which we provide suitably on the extremity
of a lever Lits other extremity being fitted axially and at right angles to the
valve spindle M. When the said rod is released from the pin K which pin is
connected to a weight N by means of a chain or cord passing over a suitable

page_text: pulley O obviously, the pin K with its lever L is under the control of the weight N
which descends thus the valve spindle is operated upon and caused to turn about
its axis thereby closing the ports or steam passages of the valve consequently
preventing the admission of steam or other motive agent to the cylinder resulting
in the stoppage of the engine..
We provide a chain or cord A for the purpose of disengaging the rod with the
pin K obviously the disconnection of the governor rod C or closing of the valve
may be effected by manual operation when desired from any room or place in a
manufactory or workshop where the chain or cord A¹ is provided and in the case of
accident manifestly must be of great advantage.
We would have it understood that we can and may if desired connect this our
apparatus by means of a chain or cord connected at any convenient part of the
chain or cord A¹ to the safety valve on the steam boiler thus in case of any defect
which may be in the said valve the valve is opened when the chain A¹ is operated
upon thus obviating an undue pressure or generation of steam in the boiler which
would occur if the safety valve were defective and being closed our arrangement
ensuring the opening thereof and we would further have it understood that we do
not confine ourselves to the precise details as shewn in the drawings as it may be
necessary to vary the same without deviating from the principle of our invention.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is
First In an improved safety stop gears for steam and other engines the employ-
ment of a chain, cord or other suitable connection whereby we are enabled to
control our apparatus by manual operation for the purpose of stopping the engine
from any convenient part or place apart from the place where the engine is
situated.
Second The lever A. the finger E the lever L the stud K the stand and pulley O
the weight N the lever G the weight D the chain A substantially as and for the
purpose herein fully set forth and described in the annexed drawings.
JOHN H. BUTTERWORTH,
Agent for the Applicants.