Improvements in Electrical Apparatus for Regulating the Speed of Engines, Starting and Stopping Shafts, Hoists, and other Machines.
Year: 1890

page_text: Date of Application, 15th Oct., 1890
Complete Specification Left, 15th July, 1891-Accepted, 10th Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in Electrical Apparatus for Regulating the Speed
of Engines, Starting and Stopping Shafts, Hoists, and other
Machines.
I, JAMES TATE, of 33 Stanacre Place, Bradford, in the County of York,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention has for its object the arrangement of an apparatus in such a
manner that engines may be regulated and other machines may be put in motion or
stopped from a distance when required, by means of an electric current combined
with mechanical apparatus, which may be accomplished in the following manner.
The driving portion of the apparatus may be rotated by a belt or other means,
and one of the shafts is provided with a disc or crank by which a reciprocating
motion is given to a sliding bar, parallel to which, is a magnet bar connected to a
rod, on the operation of which a steam valve spindle of an engine, lever for
coupling or uncoupling a shaft, or the belt of a machine may be operated in the
direction required. To the magnet bar are jointed two armatures, above which
are secured two pairs of magnets, one pair above each armature, and to the
frame of the apparatus are secured to insulating material two contact springs
electrically connected to their respective terminals, switches and magnets.
Each magnet when in circuit raises the respective armature into such position
that, a projection on the crank or disc driven sliding bar, comes in contact therewith
and operates the magnet bar and connections, sliding them in the direction for
putting the machine or the like in or out of motion as may be required.
On moving the switch bar to complete the circuit between one of the contact
springs and one pair of magnets, the armature immediately below same is raised
into such position that it engages with a projection on the first named reciprocating
sliding bar, by which it is operated a certain distance equal to the stroke of the
crank, the circuit is then broken and the other spring contact put in circuit with
the other pair of magnets so that when the switch is changed to complete the
circuit of the last named magnets and operate the armature below same, the magnet
bar and connections are moved in the opposite direction, thus by these means the
driving belt of a machine may be moved on to the fast or loose pulley, or the
lever of a sliding coupling operated as desired from any distance in electrical
connection.
On applying my invention to marine or other engines the supply of steam to the
same may be regulated by a pair of governors arranged so as to put one or other of
the contact springs into circuit whenever the engine is running above or below the
regulated speed, the magnetic sliding bar by this arrangement is in connection with
a steam supplying valve of the engine, the steam being admitted or cut off' according
to the direction in which the sliding bar is moved.
2000
JOHN WAUGH,
Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in Electrical Apparatus for Regulating the Speed
of Engines, Starting and Stopping Shafts, Hoists, and other
Machines.
I, JAMES TATE, of 33, Stanacre Place, Bradford, in the County of York,
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:-
This invention has for its object the arrangement of an apparatus in such a
manner that, the speed of engines may be regulated, and other machines put in
motion or stopped from a distance when required by means of an electric current
combined with mechanical apparatus of a novel combination.
In the accompanying drawings,
Fig. 1. represents an elevation of an apparatus constructed according to my
invention.
Fig. 2. is a plan of the same.
Fig. 3. an elevation of the back part of the apparatus with a portion cut away to
more clearly show some of the mechanism.
Fig. 4. an end view, and Fig. 5. a detail hereinafter referred to.
The apparatus may be operated by a belt or other well known means; in the
drawings, A. indicates the driving pulley mounted on a stud pin on which is also
mounted a pinion B. attached to the pulley A. and gearing into the teeth of
wheel C. mounted on shaft D. on which is also secured a disc or crank E. to the
pin F. of which, is mounted a rod G. by means of slot hole G¹ so that, on the
crank rotating, the rod G. reciprocates, and is guided in its motion by suitable
slides formed on or attached to the bed plate of the apparatus. Coupled to the
rod G. is a crosshead H. having notches or recesses formed therein for the purpose
hereinafter described.
Against the plate J. of the apparatus is mounted a rack bar K. arranged so that
the same may slide to and fro, and secured to the said rack bar is a casing L.
containing two pairs of magnets M. and M' connected by wires to the respective
contact springs L' and L2 and immediately below the magnets are mounted the
respective armatures N. and N' which are hinged at one end to the magnet
casing L.
The contact springs L' and L2 are secured to a block of insulating material [.
and are electrically connected to their respective terminals O. and O¹. Each
magnet when in circuit raises the respective armature; say, for example, the
magnets M. are in circuit, the armature N. will be raised, the catch N2 at end
thereof engaging with a corresponding catch or recess formed in reciprocating
crosshead H. which will then draw the armature N. and magnet casing L. in the
direction of the arrow, thereby operating the rack bar K; the teeth of which
gearing with the teeth of pinion P. causes the latter to rotate.
The pinion P. is mounted on a short shaft, to which is also secured a lever Q.
having a slot hole therein for the reception of a pin 11 secured to bar R. so that on
the pinion P. and lever Q. being operated, the bar R. is actuated accordingly, and
the belt moved from one pulley to another, or other connections with the rod R.
actuated.
When the magnet casing L. and connections therewith have been moved in the
manner described a distance equal to the stroke of the crank E. the electrical
connection between the magnets M. and contact spring L' is broken, the other pair
of magnets M' being then in circuit with the contact spring L² so that, on moving
the electrical switch to send a current through magnets M¹ the armature N' will
be attracted, the end engaging with the crosshead H. the rotating crank and
reciprocating rod G. will then cause the magnet casing L. to be moved to its

page_text: original position, thereby operating the bar R. which may be coupled to a belt
guide fork of a machine and thus move the belt on to the fast or loose pulley
as desired; or the lever of a sliding coupling may be attached to bar R. and
on the said bar being operated the coupling slide on the shaft in or out of gear
as desired, from any distance in electrical connection.
On applying my invention to engines, the supply of steam to the engine may be
regulated by a pair of governors in combination with my apparatus, by placing on
one of the rods S. operated by the rising and falling of the governor balls, two discs
or projections T. Ti somewhat as shown by Fig. 5. such discs or projections having
no electrical contact with rod S. but are electrically connected with the respective
contact springs L' and L² so that, on the engine going above or below its regulated
speed, the rod S. is operated in a lateral direction indicated by the double arrow,
and when either of the discs T. or T' come in contact with the pointer or contact
maker U. which is in connection with the battery, the current is sent through the
magnets M. or M' of the apparatus and the bar K. operated in the manner as
hereinbefore described.
The bar R. is connected to a rack which may engage with a wheel secured on the
steam supply valve spindle, or to a wheel secured on an ordinary nut such as is
commonly used for adjusting the length of the rod connected to the throttle valve
lever of an engine, such nut forming a coupling by engaging with a left and right
hand thread on the respective portions of the rod, so that, when the bar R. is
operated, the rack connected thereto gearing with the wheel on the valve spindle
rotates the same, thus opening or closing the valve, or when in combination with the
nut, the latter is rotated and the rod thereby lengthened or shortened as required
by the speed of the engine.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1. The combination of parts forming the complete apparatus whereby the bar R.
is moved in the direction required substantially in the manner as and for the purpose
set forth, and illustrated by the accompanying drawings.
2. The combination of the contact springs L1 and L2 with a movable magnet
casing L. and rack bar K. substantially as described.
Dated this 14th day of July 1891.
JOHN WAUGH,
Agent.