It took some futzing, but I figured out how to get copies of British (well, European) patents:
Go to (for English).
Enter the patent number "GB 323037" (original bridge patent) or "GB585780" (automated bridge).
The patent will be in the list presented. Click on the patent title.
The patent will duly come up. Click on the "Original Document" tab.
When motion stops, it may or will seem that the pdf has been downloaded. But this copy is defective, so discard it.
Look above the tab window for a menu-bar containing the button "Save Full Document"; click on this button.
An are-you-human? test will present; answer the question. The real pdf will now download. Unless you blew the test.