Issue 22 and Volume 29.

AERIAL HOOK AND LADDER TRUCK. Great as was the improvement of the old-fashioned hook and ladder truck over the primitive fire ladders of a past age, the latest aerial hook and ladder truck, especially of the Dederick class, marks a still higher stage in the development of modern fire apparatus. The ladder can be fully extended in fifteen seconds and requires only four men to raise It. These stand upon a platform of a turntable, and in thiB way their position is unaffected by the turning of the ladder, while their weight acts ns a counterbalance. The props bearing upon the sides of the ladder as it ascends support its weight both while moving upwards and when at rest, thus obviating strain upon any part. The operators can begin to elevate the ladders before the truck stops, and thus be ready for any emergency in the shortest possible space of…

Subscribe to unlock this content

Subscribe Now