The Houston daily post. [volume] (Houston, Tex.) 1886-1903, 1902-05-22

SlsnllS III they SO desire.
IL. Dwarf signals.
Dwarf signals having small area and
suitably adapted as 70 re Eht should be
similar In leslg \ snd losation 10 the home
signal, They should be used to govern
movements ON secondary tracks or move
ments ngainHt the current of traffic OF main
tracks where. reverse movements become
necessary and where necessary In yards.
u. Bracket posts,
Bracket posts should be used In all cases
where Il is necessary to signal trains on
different tracks. operated In the same di
rectlon, from the same post, the position
of the posts on the bracket 10 core pond
to the position of the track on which the
movemcnts are TO be governed
II, General arrangement OF signals.
The signal man In the tower should be
able TO see the arms ana the back ligh
lamps to be made as small AZ practicable
having regard to efficiency, When the
front lights are visible 20 the man In the
tower no back lights viii be required n
for any unavoidable cause the arm or light
Of any signal can not be seen by the signal
man, a repeater or Indicator should he pro
vided In the signal tower
IL Deralls.
The deraiing points shall he located on
high speed tracks, not less than four bun
bred 400 feet IN advance ~ the crossing
or fouling point which Il is intended ~
protect where the grade is practically level,
but IN case OF descending grade toward
the crossing or fouling point the dcrAlling
point must he located Mt such a distante
give the same measure OF protection that
is required for level approaches,
When in the opinion Of the commission
the train service and character Of the traf
tic on any high speed track is such that
the above limit can be varied from the 10.
cation OF the derqils viii be approved at
such distance In advance ~ the crossing or
fouling pont as in Its Judgment will give
an equal measure or protection
Guard rails VIII he required at all derails,
to begin before the derall Is reached aud 10
be Of such length as the commission may
approve. They will be required at al
points which the commission viii deem
necessary for safcty and protection OF
i6 Derall points on secondary tracks,
ON all secondary points the derail points
shall be located SO as to give the same
tracks, and in no case less than one nun
drcd and fifty J5ol feet from the crossing
| or fouling point.
In case spur or switch track connects
with the muiu track between the dcrJil
and the crossing which u protects, the spnr
or siding shall he provided " th a d,rail
IN accordance with the foregoing require
is. Dcrails. how worked
In mechanical nterlocklng plants all de-
rails and sw l.chcs whcthfr facing or
trailing. must he worked either by iron
or steel pipe not less than one inch In
inside diameter, Of standard sppcihcatiol~.
10 Locks for dcralls, slip switches anu
movable point frogs
An slip switches, movable 20 mt frogs
| and deralle should he locked either by II
separate line of connections from those.
used 10 move such slip switches. movable
| point frogs or deralls, or by double pointed
switch and lock movement OF approved ISt-
tern, Where the double pointed switch
and lock movement is used on high
I snced tracks, ii must he in connection with
! bolt lock operated with the home IN
! distant signal which indicates the position
| OF the facing point
%. Switch movements.
| Switch movements should bc located On
| long ties extending suftc ent distance
| from the rail to another suitable founda-
| tion. and the switch movement shuula he
! further connected with the rail- br con
! tinuOus plato extending under the rails,
! fitted with special braces To insure ac-
! curate adjustment and maintenance Of
| grade az track All ties to witch lock
movements Of switch and lock movements
! 70 adjacent tics
81 Detcctor bars.
! All dcrails, facing point switches and
| other fixtures changing the route or I'm.
! pcdlng the progress of trains shall be pro-
| tcctrd by dctoctor bars, each at least t.
feet In lcngth The first Interval n tho
I movement Of the switch lever which wi II
draws the locking pin must, y, the same
I time, raise the detcctot bar above the
level OF the rail, The nnal movement Of
the switch lever must advance The detec-
tor bar to its normal position, the level
Of the rail-. II the deiectoi bar is not
! worked Oh the Switch leyer It must he
! either direction
%, Arrangement Of levers In mechanical
machine
In An mechanical ntcrlo king devices tho
levers by which the points and. signals are
worked should lee rrolned in a tower and
| supported on a suitable foundation Az
levers should be piyotcd on common cru.
tor So Gar as may he practicable tue
levers should be so arranged that those
nscj in any r5ufc combination shall bo near
togpthol preference being given 10 thc
coniblnattons most often set up. Tho levers
should he numbered from left to ri :ht. Tho
visible nalts of tie lovers above the mn.
chine except the finished part OF tho
handle should be painted as follows,
switch levers, black; lock levers, blue
switch aud lock levers, black and blue
home signal levers, red, distant sigma
levers, yellow
~ Preliminary locking,
Tho lorkinr should be actuated nv tn,
action If the latch rod or BY device per
forming similar service IN advance OF
the first movement Of the lever. The hlS
act in reversing lever nust lock TIT
| levers of an conflicting routes
"a Ioekin. ~ levers
Tho levers should be so arranged tina
,chiio INC sipnnls arc IN their normal nnsi
tlon. l. e.. nj danger" tho levers operat
ing poil,ts shall he free to move Provided
however, that Tho preliminary act OF re
vtrsIuy any lever snail lock All signq
levers controlling opposing rortes The mr.
rnnrement Of lacking must be such as I,