The star-independent. [volume] (Harrisburg, Pa.) 1904-1917, 1914-12-31
POWER TRANSMISSION

The word (sHoULD) where used is
to be understood as advisory and
(SHALL) as mandatory.
Note: Unless otherwise provided for
by regulations approved by the In
dustrial Board, the following safety
regulations for transmission OF power
shall apply also to all power driven
machinery having exposed collars, set
screws, shafts, couplings, clutches. keys,
pulleys, gearings and belts.
Emergency Stops-A station or sta
tions must be provided IN eaeh room,
section OF department TO stop lmmedl-
ately all power transmission therein.
Such station or stations shall be prop
erly marked and easily accessible. The
prompt stoppsge of machinery Is an
emergency is fastened by allowing the
full load TO remain on all machines.
Set Collars shall be cylindrical, ana
the screws used to fasten the same to
the shaft shall not project beyond the
largest periphery OF the collar.
Split Collars. after assembly, snail
conform 10 the above specifications for
solid collars.
All projecting set screws in moving
and replaced by flush set screws.
Horizontal Shafts less than six feet
from the floor or working platform lev
eli including dead ends of same, shall
be guarded, or protected by standard
railing. as provided for horizontal belts.
Shafts less than twenty feet IN
heights over driveways above floor or
ground level shall be guarded.
,ho1 ha apaaspI n
guarded TO height of SIX feet from
floor or working platform, or oe guard
ed by a Standard Railing with not less
than Is inches clearance.
Revolving Shaft Couplings shall be
cylindrical, and bolts used shall not
project beyond the largest periphery oil
Coupling or its projecting hsnges
Clamp Couplings-Heads and nuts
of all bolts in clamp couplings shall
not project beyond the largest per
iphery. 1t is recommended that the use
of this style of Coupling be discour,
aged unless guarded by cylindrical
sleeve, the full length of the Coupling.
New installations of such Couplings
must be guarded by cylindrical sleeve
the full length of Coupling.
Jaw Clutch Couplings shall be pro-
vided with a cylindrical sleeve to COW
er the jaws.
Universal and Flexible Couplings
snail be guarded in manner to re
move all hazard
Friction Clutch Couplings shall have
their operating mechanism completely
guarded where exposed.
: All projecting Keys in revolving
shafts, where exposed 10 contact, shall
be made flush OF shall be guarded.
Pulleys-When the bearings are not
self-oihng and the clearance between
the pulley and bearing on line shaftlng
is 80 inches or less, pulley shall be
completely guarded on side nearest
bearing and all key ways in shaft be
tween such pulley and bearing shall be
substantially encasei or properly filled.
All parts of Pulleys within seven
feet of floor or working platform level
shall be guarded underneath or pro-
tected by Railing as provided for
horizontal belts. Where the space De
tween two Pulleys or between Pulley
and a bearing is less than the width of
the widest belt used, such space shall
be guarded so that the belt cannot get
between the Pulleys or between the
1uueF anu utdIth-. y nan -V Nu SANN VI
pulley nearest bearing, or adjacent pull
lev, will he considered a guard.
On Counter Shafts, the space be
tween pulleys and the nearest bear
ing shall not be less than the width
of the belt used unless such space is
properly guarded. A hange on side OF
pulley nearest bearing, or adjacent pull
lev, will be considered guard.
Gears-An toothed, chain driven and
sproeket gearing used in the transmits
sion of power or on machinery snail be
completely enclosed wherever practIc-
able. otherwise, at ieast to base of
teeth.
1t is strongly recommended that pull
leys. gears, sproekets, sheaves, etc,
having spoke arms should be guarded
by discs, as nearly as possible flush
with rims of wheels. All friction drives
snail be completely guarded.
Belts--Yertical and inclined belts
extending to within six feet of floor or
working platform level shall be sub
stantially guarded as follows:
If guard is placed less than six
inches from belt, with an enclosure on1
all sides, not over IL inch between
members to height of six feet above
floor or working platform. II guard is
placed between inches and 15 inches
in clearance from belt, with an enclos-
ure on all sides, not over 2 inches be-
tween members to a height of feet
above floor or working platform.
4 standard railing may be used if
placed to allow Is inches clearance
from the belt.
Where belts pass through floor, a
standard toe board shall protest floor
opening.
If upper part of horizontal belt is
hess than feet from floor level or
working platform it shall be guarded on
top and sides or provided with a stand
ard railing at least 10 inches horizon
tally from the edge of the belt.
Overhead belts with lower part
feet or less from floor or working plat
form level, shall be guarded on sides
and bottom.
Passsgeways between upper and low
er parts of belts are prohibited unless
special permit is granted by the De-
partment of Labor and Industry. Space
tFaversed by such belt shall be com
pletely barred against passage. Over
head belts 10 inches or more in width
x....o Ex1r, a.