One of our most useful pieces of equipment went down on us last year. After many years of faithful service, the transmission gear box failed. It is one of our new machines, housed in the Tri-Dam building, so most visitors do not see it. Keep in mind that the term ‘new’ is relative, here. The Cincinnati #4 Horizonal Mill with Powered [...]
Archive for the ‘Crossheads & Guides’ Category
Revamping the Cincinnati Milling Machine
Posted in Crossheads & Guides, Equipment, Maintenance, Restoration, Sacramento Shops, Staff, tagged Cinncinnati Milling Machine, Railtown on March 15, 2012 |
Oil Cup Covers for the No. 3
Posted in Crossheads & Guides, Restoration, Sierra No. 3, Volunteers on August 25, 2011 |
Like all bearings on the locomotive, the crosshead guides require lubrication. An oil cup is mounted on the top of each crosshead, and slowly releases oil during operation. The cup is covered with a brass cap to keep the oil from sloshing out. If you look closely, inside the circle, you can see one of [...]
Lagging Complete!
Posted in Boiler, Crossheads & Guides, Sierra No. 3 on April 16, 2010 |
The boiler is insulated with rigid sheets of calcium silicate which are scored (and cut where necessary) and held into place with wire. They will be neatly covered with a sheet-metal jacket as the final layer.
Crossheads and Guides
Posted in Crossheads & Guides, Restoration, Sierra No. 3, Staff, Volunteers on February 9, 2010 |
The crossheads and guides are mechanisms that ensure that the piston rod only moves in the same direction of travel as the piston. Since the rods are connected to the crank pins on the driving wheels, without the crossheads and guides, there would be excessive transverse force, which would cause wear on the piston, and [...]
