VSB B 3/4

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VSB B 3/4
description
description
Numbering: VSB 101-115
SBB 1581-1595
Number: 15th
Manufacturer: SLM
Year of construction (s): 1890-1901
Retirement: 1913-1929
Type : 1'C h2
Gauge : 1435 mm ( standard gauge )
Length over buffers: 13,380 mm
Service mass: 74.6 t
Wheel set mass : 12.7 t
12.8 t 1
Top speed: 75 km / h
Indexed performance : 515 kW
Starting tractive effort: 53.5 kN
Driving wheel diameter: 1,590 mm
HD cylinder diameter: 450 mm
465 mm 1
LP cylinder diameter: 640 mm
680 mm 1
Piston stroke: 650 mm
Boiler overpressure: 12 bar
13 bar 1
Grate area: 1.7 m²
1.9 m³ 1
Evaporation heating surface: 138.6 m³
132.2 m² 1
Brake:
External brake autom. Westinghouse brake
1 numbers 111-115

The United Swiss Railways (VSB) procured a total of 15 express train steam locomotives of the type B 3/4 between 1890 and 1901 . The VSB referred to them as type A3T.

The locomotives were purchased from the Schweizerische Lokomotiv- und Maschinenfabrik (SLM) in Winterthur at a unit price of 70,000 to 84,000 Swiss francs.

Technical

The steam locomotives of the type Mogul were the only ones of the VSB that were equipped with a two-cylinder compound engine. They largely corresponded to the 2nd series B 3/4 of the Jura-Simplon Railway .

The machine had an inner frame, the running axis was guided by a Bissel drawbar frame . The suspension springs were located under the coupling axles and on the running axle above the bearing housing. There were compensating levers between the 1st and 2nd and the 3rd and 4th axis. The boiler was 2140 mm above the top of the rail. The fire box was above the rear axle. The steam dome was placed on the middle of the boiler. The inlet pipe was first led forward inside the boiler, then outside the boiler on the right side perpendicular to the high pressure cylinder. The Klose safety valve was uncovered over the fire box. The steam engine acting on the central drive axis was equipped with a control of the Walschaerts type with a straight backdrop according to Helmholtz . The reversal was carried out with a screw and wheel via an upper control shaft. The two horizontally lying cylinders had piston rods leading through to the front. A start-up device of the Lindner type was available for starting . The tender was equipped with an eight- block external brake (hand brake). The automatic Westinghouse brake also acted on the blocks of the tender and also on a four-block drive wheel brake .

The two-axle tender with outer frame largely corresponded to that of the C 3/3 , but had a larger capacity.

Steam heating and a speedometer from Klose were installed.

The machines could carry 9.6 m³ (10.6 m³ 111-115) of water and 4 tons of coal as operational supplies.

VSB
number		 SBB
number		 Factory
number		 2nd boiler Construction year Out of
service		 Remarks
101 1581 639 - 1890 1914
102 1582 640 1910 1890 1921
103 1583 656 - 1891 1924
104 1584 657 - 1891 1921
105 1585 658 - 1891 1924
106 1586 740 - 1892 1913
107 1587 741 - 1892 1916
108 1588 742 1904 1892 1924 1918, boiler 1594
109 1589 1051 - 1897 1924
110 1590 1052 - 1897 1920
111 1591 1284 - 1900 1924
112 1592 1285 - 1900 1926
113 1593 1384 1921 1901 1924 Boiler 1582
114 1594 1385 1918 1901 1929 Boiler 1588
115 1595 1386 - 1901 1929

Operational

You were assigned to the Rorschach workshop and thus also to SBB District IV.

swell

  • The steam operation of the Swiss railways 1847-1966 (Moser book) p.120ff