Improvements in Regulating the Blast of Locomotives and in Apparatus therefor.
Year: 1885

page_text: Improvements in Regulating the Blast of Locomotives and in
Apparatus therefor.
I, SAMUEL MORLEY of Lorne Street, Stockton-on-Tees in the County of
Durham, Engineer do hereby declare the nature of my said invention for
"IMPROVEMENTS IN REGULATING THE BLAST OF LOCOMOTIVES AND IN APPARATUS
THEREFOR to be as follows:-
"
Great waste of power is caused in a locomotive under existing arrangements
owing to the exhaust being of necessity turned into the chimney, and thus being
employed to quicken the draught when nearing a station, or when the steam is
actually blowing off.
Now my invention is designed to obviate this evil and enable the driver at will
to use the steam to urge the draught or to allow it to escape up the chimney
without so urging the draught.
The invention consists in forming the exhaust passage with two upward orifices,
one the ordinary exhaust, the other a pipe leading up the chimney and out at top
or at one side, and having a valve or switch at their junction to turn or switch the
blast in either direction. The valve or switch can be of various types, I have
myself designed a slide valve and mushroom valve, a flap valve and a circular
hollow rotating valve for this purpose. I prefer the latter. It is a simple hollow
barrel with a wide opening on this periphery below and a smaller above and rotates
in a second barrel into which the exhaust enters at base and the blast and waste..
pipes issue from above, by turning the valve, either of these can be closed while
the other is opened or both can be partially open, the orifice below being big enough
to never impede the passage of the exhaust steam into the cylinder,
The valve spindle is preferably brought through the side of the smoke-box and
provided with a crank and connecting rod running alongside the boiler to a handle
and rack on the foot plate or in the cab, so that the driver can at pleasure shut off
the blast in whole or in part.
1000

page_text: :
Improvements in Regulating the Blast of Locomotives and in
Apparatus therefor.
I, SAMUEL MORLEY of Lorne Street,. Stockton-on-Tees, in the County of
Durham, 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 :-
L
The invention is best described by aid of the accompanying drawings representing
the apparatus as applied to an English locomotive.
In this, Figure 1 is a sectional elevation.
Figure 2 plan.
In these A is the exhaust passage from the valve chests, B blast pipe. C'waste
pipe leading up chimney from back of blast pipe, D valve, E valve spindle passing
through smoke box side. F crank, G connecting rod leading to cab and having a
handle and rack at end, in the usual plan of valves worked from the cab.
The valve E can be of various types, I have myself designed a slide valve, a flap
valve and a mushroom valve for this purpose. I however prefer as simplest and
cheapest of construction, the valve shown in the drawings as it can be turned
instead of being fixed, and it is more easily fitted with a spindle. The opening K
for the exhaust is made of such a size that it will present no impediment to the
exhaust, whether the blast or the waste pipe is open. The entire exhaust can thus
be sent into either the blast pipe or the waste pipe or be divided between them.
In no case is the area of escape at the valve, appreciably lessened. The blast pipe
I place concentrically with the chimney and of ordinary height and contour. The
waste pipe I bring up as vertically as practicable behind or before the blast pipe,
and either through the chimney to the top or outside the chimney, I prefer the
former as shown.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I wish it to be under-
stood that I do not make any claim for the broad principle of cutting off a part
or all the steam at times from the exhaust as arrangements have before now been
made for cutting off a part of the steam to heat the feed water, and I make no
claim for such, but I believe that never before my invention thereof, has a blast
pipe been divided in this way with a valve, so that the current can be switched
into either branch as described, and I declare that what I claim is :-
1st. The method of regulating the blast of a locomotive, which consists in
switching off a part or all of the blast from the ordinary blast pipe to another pipe
leading to the outer air, substantially as described.

page_text: 2nd. The apparatus for regulating the blast of a locomotive consisting of two
exhaust terminals C and D, and a valve V placed in the exhaust and capable of
turning the exhaust steam into the ordinary blast orifice C, or the escape orifice D,
or part into each, substantially as described.
3rd. The barrel valve V in combination with its accompanying mechanism,
substantially as and for the purposes described.
Dated this 6th day of March 1886