Hi,
Trains without continuous vaccum or air brakes had to comprise of a certain number of traincars fitted with hand brakes. Their operators were seated on seats on the roofs, or later in small cabins at one end of the traincar. These brakeman's cabins were a very conspicious feature with continental traincars. US und UK railway companies used special brake vans or cabooses at the end of each train. Communication between the locomotive driver and the brakemen occured by signals mads by the steam whistle.
With the Grandducal Baden State Railways, the conductor would ride in a guard van right behind the locomotive. A special line was strung from the locomotive's steam whiste to the raised conductors compartment, from where he could observe the entire train. By means of this line the conductor could operate the steam whistle too, and order brakes applied in an emergency.
Although early locomotives had no brake, their tenders invariably had a hand brake. It was operated by the fireman and used to brake a locomotive. During shunting operations this put quite an extra workload on the fireman. I read about firemen having bloody hands after long work shifts.
I built a number of 19th century locomotives of the Grandducal Baden State Railways, which had no air brakes either. As trains expects to have a brake at your loco in the driver's mode, I made the hand brake lever (or spindle) part of the cab mesh and configured it as the train brake lever in the config-file. That works quite nicely, although it puts some extra stress upon the operator in the driver's mode.
By the way, reading about the debates about fitting continuous brakes, I learned that some railway engineers and executives up to Francis Webb obstinately considered reversing the engine the most efficient method for emergency braking.
With the rather light locomotives and traincars used during most of the 19th century, this may have been an acceptable procedure. As locomotives became heavier and more powerful it had to be prohibited as it could cause severe damage to pistons, cylinders, piston rods and drive rods. The damage could also consist in hidden cracks, which would not become manifest unit the next time heavy strain was applied to the damaged part...
In this context Riggenbach's counter pressure brake should be mentioned too. By turning some levers in the cab, the locomotive's cylinders and pistons could be used as air compressors. Producing compressed air would eat up kinetic energy and save brake blocks and tyres. The compressed air was released through a reduction valve and a muffler. By setting the filling rate and reduction valve, pressure and air flow through the cylinders could be regulated. This way the brake force could be precisely regulated and overstraining of locomotive parts be prevented.
Locomotives operating on mountainous lines were frequently fitted with Riggenbach brakes. Such locomotives were also used with testing facilities, where they were used to simulated heavy train loads.
Cheers,
Konni