LOADINCx AND UNLOADING CARS 367 
The loading cable passes from the drum on the road engine, 
or from a special loading engine through a l)lock at the peak of 
the gin-pole, then through the lead blocks, then across the car 
and over and under the center or end of the log to be loaded. 
The cable is then brought forward and the grab hook on the end 
of the cable is caught in the edge of the landing, or on the car 
bunk. By winding in the cable on the drum the log is rolled 
up the landing and upon the car. 
A modification of this device has been brought out for more 
rapid work and for handling long logs. It has a loading engine 
similar in type to the yarding engines and two gin-poles and 
loading lines instead of one. The cables are attached to the 
logs by means of tongs or slings. Each line may be operated 
independently or the two may be operated in unison.^ Gin- 
pole loading is being superseded by overhead methods. 
Loading with Jacks or Peavies. — This method, which is now 
rarely used, is employed where logs are loaded by hand and only 
bunk loads are placed on the cars, peavies being used for loading 
small logs and jacks for large ones. 
Overhead systems. — Various forms of overhead loading devices 
have been developed to replace the gin-pole because they obviate 
the construction of landings which have limited storage capacity 
and from which logs nmst be loaded in the order in which they 
are yarded, thus eliminating any chance for the loadermen to 
select the logs as they are placed on the cars. The greatest 
development in overhead loading equipment has been made in 
the Northwest. Some overhead systems operate without stand- 
ing lines, while others are equipped with them. The type shown 
in Fig. 126 has two gin-poles placed from 100 to 200 feet apart, 
the head pole being from 50 to 60 feet in height. This is located 
on the side of the track opposite the spot at which the yarding 
engine delivers the logs. The other pole is from 15 to 20 feet 
in height and may be a gin-pole or a tall stump. The |-inch 
hoisting line leads from the main drum of the loading engine 
through a double block at the top of the head pole, then through 
a single block in the bight of the line. The f-inch trip line 
leads from a second drum on the loader, through a block at the 
top of the head pole, then through a block on the opposite 
pole, to the 12-foot crotch spreader. This equipment can move 
' The Timberman, December, 1910, p. 33. 
