Filling in a trestle, 1926-27 - Trains Magazine
Steam Shovels, Again!
Thank You Mr. M M Re the text on Steam Shovel Management.
Mining and Railways and Big Equipments run together.
Here is another Great Project which must hold the title for the amount of men and machines in one location.
The Panama Canal.
Showing the Flag.
The centre casting of the table was hollow, by Teddy's left knee, and bushed with a bronze bearing to allow chain and table to revolve on centre as boom swung.
Boom swung by a cable with it's own steam engine and drum.
The man on the Boom racks the Dipper in and out against the bank using a two cylinder steam engine which exhausts at the top of the boom, he opens the bucket door latch w a lanyard.
Note flexible steam pipe couplings above pulley.
Steam Shovel Engineer and controls, Throttle top left.
Many Trestles were constructed with the INTENTION of filling them in at a later time.
In this way untreated timber, often cut locally in mountainous country, was used, saving the costs of treatment and shipping.
The Trestles would then be filled before the timber life expired using the completed railway to transport material.
As timber was available during construction in the mountains, CPR used coal burning locomotives fired on wood as readily available rather than shipping in coal great distances and demands for steam not as great as on through trains.
The same applied to bridges that were planned to be finished in stone or concrete for their Abutments and Piers, Steelwork above.
Quick Trestles in wood, first, then, once the line completed, move in heavy materials and steelwork by rail.
Thank You.