Umler Index

MS--Scale Car-Cars used to test railroad track sales. MT--Training unit equipped with training aids or modified to demonstrate components of the unit. MW--Class. Weed Exterminator--A car equipped with machinery for propelling itself, or otherwise, and burning or spraying weeds along the track as it proceeds. Rail Saw--A car equipped with machinery for sawing track rails and similar material. Rail Bender--A car equipped with machinery for bending track rails and similar material. Grass Cutter--A car equipped with machinery for propelling itself, or otherwise and cutting grass along the track as it proceeds. Track Layer--A car equipped with machinery for propelling itself, or otherwise, and laying the track ahead of it as it proceeds. MS--Scale car. Cars used to test railroad track scales. (Added April 2006) MWB--Ballast Cars. A car used to carry ballast for laying new right of way and repairs. The car used generally for this work is of the gondola type, with side or center dump. MWC--Caboose and Tool Car. Similar to tool car but having one end fitted up as a caboose with bunks and water storage with or without lookout and it is used in either work or wrecking trains. (Added April 2006) MWD--Dump Cars. Type of contractor’s car used for building up fills; the body of the car dumps being raised by means of counterweight (air or hand power) for dumping. MWDC--Ditching Car. A car equipped for excavating ditches along the sides of tracks as it proceeds, self-propelled or not. MWE--Ballast Spreader and Trimmer. A car with blades or wings for spreading or trimming ballast. MWF--Flat Car. Used for transporting rails, ties or ballast and for storage of wrecking trucks or gathering scraps along right of way. These cars are at times equipped with low sides, about 10 or 12 inches high. MWG--Section Gang or Track Inspection Car. Flat car with or without seats or tool boxes, and equipped with single or double cylinder gasoline engine serving as motive power. MWH--Hand Car. This car is flat and mounted on four wheels and propelled by means of pushing known as a Push Car. (added April 2006) MWJ--Ballast Unloader. A car equipped with machinery for pulling a plow through cars loaded with ballast. (added April 2006) MWK--Snow-removing Car. A car equipped with any special device for removing snow from between or alongside of rails. MWL--Hand Car. This is a small flat car with or without seats mounted on four wheels and propelled by means of cranks or hand levers. (Added April 2006) MWM--Store-Supply Car. A box car used for handling material or storing tools, blocking or other material for railway use. MWP--Pile Driver. A car equipped with machinery for pile driving. MWRC--Unit equipped to receive and transmit radio signals via multiple-unit connections to coupled locomotive for remote control operation. MWS--Steam Shovel. A car equipped with powered boom, the end of which is a shovel or scoop. Because it is equipped with safety appliances, it may be propelled by its own power or by means of a locomotive and be run as a car in freight trains. The cubic capacity of the shovels (in yards) can be indicated following the classification letters (for example, MWS 6 yards). MWSP--Shoving platform consists of a car equipped with hand safety rails and a shelter where a train crew can guide a train in a reverse or shoving operation. MWT--Tool and Block Car. A car used for carrying all descritptions of tool equipment and blocking. This car has side and end housings and roof also end platforms. There are doors in sides and ends and usually windows. It is fitted inside with proper racks and boxes for storgae of tools. (Added April 2006) MWTK--Tank Car. Similar in design to "T", but used specifically in Maintenance-of-Way service. MWU--Wrecking Derrick. This derrick has boom and hoist fitted to frame of flat car and lifting done by means of hand power, propelled by locomotives. (Added April 2006) MWV-- Wrecking Derrick. This derrick has boom and hoist fitted to flat car and having drum at one end to furnish means of hoisting - steam furnished to donkey` engine, running drum, by means of flexible steam line from attached locomtove - propelled by locomotive. (added April 2006) MWW--Wrecking Derrick. A derrick used for wrecking purposes equipped with an engine housed on a separate platform to raise and lower booms and hoists. The separate platform and the attached boom are pivoted in the center of the car. A derrick is usually fitted with outrigger beams to stabilize the car for heavy lifting. Derricks are usually propelled by means of a locomotive, but can be equipped with self-propulsion equipment for traveling short distances. Lifting capacity (in tons) is clearly marked. MWX--Boarding Outfit Car. A car used for boarding, sleeping or cooking purposes in construction and similar work.

NA--Sensing, audio, emergency braking unit (CDU) that accepts, analyzes, and displays information relevant to the rear of train. The NA provides audible alerts and displays to assist the engineer operating the train and is equipped with emergency braking feature in the event normal brake capability is lost. The arming feature prevents unauthorized use of the emergency braking device. NB--Receiver Display Unit (RDU). A device mounted on the control stand in the locomotive to receive, analyze and display information as transmitted by the SBU. The RDU provides audible alerts and displays to assist the engineer in train operation. NE--All cabooses. NC--Communications Logic Unit (CLU). A device located in the short hood of the locomotive which accepts and analyzes radio messages transmitted from the rear of the train by the SBU. After the messages are analyzed the CLU forwards the information for display in the cab of the locomotive. ND--Input and Display Unit (IDU). A device mounted on the control stand in the cab of the locomotive to display information which has been sent by the SBU and analyzed by the CLU. The IDU provides audible alerts and displays to assist the locomotive engineer in the handling of the train. NF--A device mounted on the trailing coupler on the rear car of the train coupled to the brake pipe. The SBT senses brake pipe pressure, and may sense motion and direction. This information is relayed by radio to the head end of the train to a RDU, CDU or a CLU/IDU combination. In addition, the SBT acts as a marker to indicate the rear of the train and is equipped with an emergency braking feature to be used in the event of a loss of the normal braking capability from the head end of the train. NL--Light only, may have brake pipe pressure device (NLU) mounted on side of trailing coupler on rear car. The NLU may or may not be coupled to the brake pipe. When coupled senses brake pipe pressure, and displays this information on a mechanical gauge on the side of unit. Primary function is to act as a marker to indicate the rear of train. NU--Sense and Braking Unit (SBU). A device mounted on the trailing coupler on the rear car of the train and coupled to the brake pipe. The SBU senses brake pipe pressure, and may sense motion and direction. This information is relayed by radio to the head end of the train to a RDU, CDU or a CLU/IDU combination. In addition, the SBU acts as a marker to indicate the rear of the train. The SBU is NOT equipped with an emergency braking feature.

PAB--Car equipped to handle passengers and equipped to handle baggage, express mail, merchandise or similar products. PB--A car constructed for passenger train service and equipped to handle baggage, express, mail, merchandise or similar products. PA--Car equipped to handle passengers. PS--Company service car, including office cars, instruction cars, display cars, etc. PSD--Company service car (including office, instruction, display, etc. equipped for food and/or beverage service.

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Umler Index

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