coal trade bulletin - Clpdigital.org

THE COAL TRADE BULLETIN. 47
SULLIVAN ANGLE-COMPOUND, POWER DRIVEN AIR COMPRESSOR
Belt Driven, Class "WJ-3." Direct Connected, Class "WN-3"
The Sullivan Angle-Compound Air Compressors,
Class "WJ-3," belted, and Class "WN-3," direct
connected, are offered to the public as a marked
advance in over all efficiency in power driven air
compressing machinery. It has been proved for
this type that it delivers more actual compressed
air than any other design of power operated compressor,
per unit of power, attention, maintenance,
supplies, floor space and cost of installation. Tlie
detailed explanation and description that follows
will, it is believed, cinvince the reader of the
soundness of these claims, and the genuineness of
the advantages set forth.
The long experience of this company in the design
and manufacture of air compressors of the
highest grade, for every class of service; its efficient
factory organization and facilities for quantity
production; its high standards of quality and
excellence, and its careful study and its tests of
Sullivan Angle-Compound Air Compressor, Class" WJ-3,"
Valve Gear Side.
every detail of this particular pattern are guarantees
that Anglo-Compound compressors will deliver
the performance claimed for them. Tests under
ful load conditions have verified the expectations
of the designers in the high delivery and mechanical
efficiencies which they have shown.
As shown in the illustrations, the Angle-Compound
air compressor has its low pressure or intake
cylinder in a horizontal plane, with the high
pressure cylinder set vertically, on the end of the
horizontal frame. Both pistons are actuated by a
single crank, and both sets of valve gear by a
single eccentric pin. The driving pulley or motor
is mounted at one side, on an extension of the
crank shaft.
Angle-Compound engines have been used for
many years under conditions demanding high
speed, freedom from vibration and close economy;
and some special air compressors of very large capacity
have been built on the same principle. The
Sullivan Angle-Compound may fairly claim, however,
to be the only power driven compressor of
this design now being manufactured in ordinary
commercial sizes. In combination with other
especial features, the following marked advantages
are obtained over compressors whose cylinders
are in the same plane, as in the familiar
duplex or cross-compound machines, whether horizontal
or vertical.
The Angle-Compound design permits a very close
balancing of reciprocating masses. The momentum
of moving parts increases as the square of the
rotative speed, and the matter of balancing is of
larger economic importance, for engines and compressors
which are intended to run at comparatively
high speed, than has generally been recognized.
The perfect balance of the Angle-Compound
compressor saves for useful work, power
otherwise wasted in friction and vibration. A
coin will stand on edge on this machine when it
is running at full load with the foundation bolt
nuts removed.
A saving of floor space is accompanied by a reduction
of strains on the foundation, and this is
of correspondingly small dimensions. No lining
up, except leveling, need be done; no expensive
or intricate problems in driving attachment need
be solved, and hence installation cost, often a serious
item in other compressor types, is always a
small matter in this machine.
The Angle-Compound compressor may be connected
by any usual method to the motor unit,
which may be located at either end of the compressor.
It may be direct connected, by mounting
a motor or water wheel on its crank shaft,
A wide range in the riee of the band wheel is permissible,
to accommodate various sizes and speeds
of motor pulleys. A change of form, type or size
of driving means may be made more easily and
cheaply than with any other design.
Refinement in every detail, making for increased
efficiency and durability, has been achieved for
this design.
The intercooler used is of unusually large relative
size, effective in action, durable, convenient
to repair, and has special features. The use of
the outside walls of the cylinder water jackets for
cooling the air is a valuable addition of water
cooled area that would otherwise be wasted.
The lubrication system is superior to the usual