Chemnitz-Komotau No. 9 and 14
| Chemnitz-Komotau No. 9 and 14 VII T 1401-1402 DR 98 7041 |
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| Numbering: | 9 and 14 Crlsr VII T - 688 to 689 VII T 1401 to 1402 DR 98 7041 |
| Number: | 2 |
| Manufacturer: | Mechanical Engineering Society Karlsruhe |
| Year of construction (s): | 1873 |
| Retirement: | 1922/1925 |
| Type : | B n2t |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 7,680 mm |
| Height: | 4,150 mm |
| Total wheelbase: | 2100 mm |
| Empty mass: | 22.8 t |
| Service mass: | 26.7 t |
| Friction mass: | 26.7 t |
| Wheel set mass : | 13.35 t |
| Top speed: | 40 km / h |
| Driving wheel diameter: | 1,100 mm |
| Control type : | Stephenson |
| Number of cylinders: | 2 |
| Cylinder diameter: | 279 mm |
| Piston stroke: | 533 mm |
| Boiler overpressure: | 10 bar |
| Number of heating pipes: | 105 |
| Heating pipe length: | 3,182.5 mm |
| Grate area: | 0.78 m² |
| Radiant heating surface: | 4.7 m² |
| Tubular heating surface: | 42.0 m² |
| Evaporation heating surface: | 46.7 m² |
| Water supply: | 2.0 |
| Fuel supply: | 0.6 t |
| Locomotive brake: | Screw brake |
The locomotives with the numbers 9 and 14 were double- coupled tank locomotives of the Chemnitz-Komotau railway company .
history
The two small locomotives were delivered to the Chemnitz-Komotauer Eisenbahngesellschaft in 1873 by the Karlsruhe mechanical engineering company with the serial numbers 728 and 769.
After the takeover by the Royal Saxon State Railways in 1876 , they were classified in the Crlsr VII T class. In addition to the numbers 688 and 689, they were also given the names SAUGER and KLAPPE . In 1892 they were redrawn in 1401 and 1402.
What was striking about these locomotives was the high chimney and the long side water tanks that reached to the front end of the smoke chamber.
The former number 9 was assigned the new number 98 7041 by the Deutsche Reichsbahn in 1925 , but was retired that same year. No. 14 had already been sold to the Dresden gas works as a works locomotive in 1922 .
Constructive features
The riveted sheet metal frame was 29 mm thick. The cheeks had a distance of 1245 mm. The riveted two-storey long boiler was 3182 mm long between the pipe walls. The typical Baden large-volume steam dome sat on the first boiler shot. The sandpit sat on the 2nd shot. The back boiler was a little too high. the grate surface was designed horizontally. The Ramsbottom type safety valve sat on the top of the standing boiler. Two suction steam jet pumps were used to supply the feed water .
The two-cylinder wet steam engine was arranged horizontally on the outside. The drive took place on the second axis. The Stephenson control was external.
The drive was supported at four points. The suspension springs were at the same height as the top of the frame behind the side water tanks. Compensation levers were not used. The coupled wheel sets were firmly mounted in the frame.
The spindle brake acted on both drive wheels. The sand spreader was hand operated. The driving wheel set was sanded when driving forward and the other wheel set when driving backward.
The water boxes were pulled forward on both sides to the smoke chamber. The coal supplies were housed left and right in front of the driver's cab. The rear wall of the driver's cab was drawn in in the lower part.
literature
- Manfred Weisbrod, Hans Müller, Wolfgang Petznick: German Locomotive Archive: Steam Locomotives 3 (Series 61 - 98) . transpress, Berlin 1994, ISBN 3-344-70841-4 .
- Fritz Näbrich, Günter Meyer, Reiner Preuß : Lokomotivarchiv Sachsen 2.transpress VEB Verlag für Verkehrwesen , Berlin 1983
- Erich Preuß , Reiner Preuß: Saxon State Railways. transpress Verlagsgesellschaft mbH, Berlin 1991, ISBN 3-344-70700-0