This fairly simple model of a Hammerhead Crane was first published
in the 1937 No.9/10 outfits instruction manual it was also published in
the 1947-1954 9/10 manual in the red and green period. The 1937
manual clearly show the change in balance between constructional
parts and strip and flexible plates. Although the previous range of sets
A to L had many of the new flexible and strip plates it carried over
many of the models from the earlier red and green sets with the
emphasis on constructional parts. The 1937 sets are far more
orientated toward the use of cheaper flexible and strip plates. This
crane clearly lacks constructional parts although I have added extra
parts in the jib and tower using strips to replace the string shown on
the instructions. I also found the need to strengthen the boom
construction added since the pictures and video were taken.
The instructions show the crane as having all the functions hand
operated but I have used three small geared motors for the hoist,
trolley and boom rotation all operated through control box.
The bearing for the jib rotation was previously used on my recent
Pontoon Crane as were the three drive motors.
The model is built with 1930's blue and gold parts but many of the gold
parts have been resprayed. When I started building the model I was
not at all sure about all the plates used but when completed the blue
and gold looks rather attractive particularly the tower corner strip
plates.
Prototypes of this type of crane were built between the 1900s - 1970s
and can still seen be at naval dockyards and ship builders around the
world. Although referred to as "Hammer Head Cranes" the more
correct term should be a "Giant Cantilever Crane". There are or were
fine examples on Clydeside, Cowes, Halifax Nova Scotia and Sydney
Australia. They were designed to be used for very heavy lifting during
the fitting out and repair of large ships. Many of the cranes were
capable of lifts of over 250 tonnes. Their use was some what restricted
as they were built in a fixed position on the dock side.
I have also built a much and larger more detailed Hammerhead crane
this can be seen by clicking the link.
First published September 24 2024 Revised 26/10/2024
