Post by igelkotten on Apr 9, 2005 11:09:59 GMT
OK, this is not about LU stock, but I still felt that this was the most appropriate place to post it anyway. District Dave, feel free to move the post and/or flog me as necessary.
As mentioned in the CO/CP stock thread, Stockholm originally used US- style contactor/unit switch technology for traction control in the first tube cars.
I happen to have in my posession a few old manuals on the "Inspection and maintenance of control equipment on cars, Stockholm Tramways", issued by Westinghouse Electric Corporation back in 1948-49. These are english-language manuals, and most probably came over the Atlantic with the first batch of 20 C1 tube cars, which were to a large extent built in USA. These cars were used for test running, staff training and so on, on suburban tramway lines that had gained an additional third rail for the test running, in addition to the normal tram catenary.
Thus, these manuals are something of an oddity, in a way pre-dating the Stockholm tube, since it opened (as a heavy metro) for passenger service in 1950. After the C1 cars, all cars were manufactured in Sweden, and quite a lot of the components were manufactured in Sweden, with some degree of modification.
However, since the principles and major parts are virtually the same on all contactor cars,and this manual has the additional advantage of being written in english, I thought that this would probably be the best one to scan. Since the scans are quite large, I have converted them into pdf files and uploaded them to a website.
First; a diagram and a photograph of a unit switch/contactor:
www.igelkotten.info/tubdokument/unitswitch.pdf (about 200 kb)
And a few pages about the construction and maintenance of the control box:
www.igelkotten.info/tubdokument/controlbox-web.pdf (about 2 meg)
This scan is extra interesting, since some long gone fitter has written extensive notes and translations in the margins. An instant course in railway swedish!
If anyone is interested, I can see if I can find a decent description of one of our camshaft controllers, or a circuit diagram for the control box.
/Igelkotten
As mentioned in the CO/CP stock thread, Stockholm originally used US- style contactor/unit switch technology for traction control in the first tube cars.
I happen to have in my posession a few old manuals on the "Inspection and maintenance of control equipment on cars, Stockholm Tramways", issued by Westinghouse Electric Corporation back in 1948-49. These are english-language manuals, and most probably came over the Atlantic with the first batch of 20 C1 tube cars, which were to a large extent built in USA. These cars were used for test running, staff training and so on, on suburban tramway lines that had gained an additional third rail for the test running, in addition to the normal tram catenary.
Thus, these manuals are something of an oddity, in a way pre-dating the Stockholm tube, since it opened (as a heavy metro) for passenger service in 1950. After the C1 cars, all cars were manufactured in Sweden, and quite a lot of the components were manufactured in Sweden, with some degree of modification.
However, since the principles and major parts are virtually the same on all contactor cars,and this manual has the additional advantage of being written in english, I thought that this would probably be the best one to scan. Since the scans are quite large, I have converted them into pdf files and uploaded them to a website.
First; a diagram and a photograph of a unit switch/contactor:
www.igelkotten.info/tubdokument/unitswitch.pdf (about 200 kb)
And a few pages about the construction and maintenance of the control box:
www.igelkotten.info/tubdokument/controlbox-web.pdf (about 2 meg)
This scan is extra interesting, since some long gone fitter has written extensive notes and translations in the margins. An instant course in railway swedish!
If anyone is interested, I can see if I can find a decent description of one of our camshaft controllers, or a circuit diagram for the control box.
/Igelkotten