In the Hospitals Investigator number 5 the following list of suppliers of temporary hospital buildings was given: Humphrey’s of Knightsbridge;  Boulton and Paul of Norwich; Portable Building Company of Manchester; Hygienic Constructions and Portable Buildings Ltd; Wire Wove Roofing Company of London; G. W. Beattie of Putney; and Kenman and Sons of Dublin. To this list should be added Spiers and Co. of Glasgow, prolific providers of isolation hospitals pretty much throughout Scotland.

A Doecker hospital hut at Netley Hospital during the Boer War, from Wellcome Library, London. Wellcome Images http://wellcomeimages.org V0015643

The Hygienic Constructions and Portable Buildings Ltd were the agents for temporary buildings constructed on the Doecker system  invented by Captain Döcker (usually rendered Doecker in English) of the Royal Danish Army. Johann Gerhard Clemens Döcker (1828-1904) first patented his portable building system in 1880. (He filed patents in France and Germany in October 1880,  in Denmark and Austria-Hungary in 1881, in Norway, England, Spain, Belgium, and Italy in 1882;  in Russia, Sweden and Victoria in 1883; and in New Zealand and the United States in 1884.) The full text of the patent he submitted in the United States can be read online here http://www.google.com/patents/US308833.

Three sheets of drawings provided details of his system:

Sheet 1 from Doecker’s USA patent 1884. [Source: United States Patent and Trademark Office, www.uspto.gov]

‘My improved portable and impermeable structure is composed of a series of light frames which may be made of wood or metal, and for general purposes such frames are polygonal in shape. Each frame a is covered with a sheet of impermeable material,  permanently connected therewith in any suitable manner, as by nailing, riveting, or gluing. Two such frames are permanently hinged together by means of any suitable form of hinge, and a pair of such frames constitute a panel.

Sheet 2 from Doecker’s USA patent of 1884. [Source: United States Patent and Trademark Office, www.uspto.gov]

‘The frames are hinged together so as to fold inwardly toward each other, so that their covering will not come in contact when folded. I prefer to cover the frames with strips of felt, which may be rendered water-proof either before or after being attached to the frames, and I prefer the latter method, especially when the felt is attached by means of nails or rivets, for the reason that the points of attachment will then be covered by the waterproofing substance applied, and produce water-proof joints, which would not be the case when the felt is applied after being rendered impermeable. This impermeability may be imparted to the felt by any one of the many waterproofing compositions or water and fire proofing compositions, or by means of oil-paints. I prefer to use felt, owing to its density and non-conductive properties, it being better adapted than any other material to shield the occupants of the structure both from heat and cold.’

Sheet 3 of Doecker’s USA patent of 1884. [Source: United States Patent and Trademark Office, www.uspto.gov]

The term Doecker hospital was sometimes used generally for portable hospital buildings, whether or not they were in fact of Doecker construction. Doecker buildings were largely used on the continent, and in Britain were also used for elementary and open-air schools.  There were two types: strong or light. The strong type were intended asa a substitute for permanent brick or stone buildings, while the light were for temporary and/or portable buildings, which could be put up quickly and cheaply.

For both types the buildings were made in sections roughly 3ft x 3ft (a little less than a metre squared). These sections could be fastened together with iron hooks and studs, allowing for de-construction and re-erection on another site. The strong type comprised timber frames weather-boarded on the outer side and covered on the inside with a composition called ‘Doecker material’ – a non-inflammable, water- and acid-proof. These two layers provided a cavity that was filled with insulating material, though the walls were only 4 1/2 inches thick (about 11 cm). The roof was covered with a flexible and water-proof material (‘ruberoyd’).

The light construction had a lighter frame covered on both sides by Doecker material. The whole building was made in sections, and the packing formed the floor ‘thus saving weight, space, and freight in transit’. No foundations were required, the building sat on adjustable wooden feet. Constructed these light buildings measured 50ft x 16ft (15.24m x 4.8m) and could be erected in one day by unskilled labour. Their insulation properties were commended: ‘Portable hospitals of this construction were used by the German Red Cross Society during the cold of a Manchurian winter in the Russo-Japanese war, and they have also been used in the tropical heat of South-West Africa’.

An image from 1900 of Doecker hospital huts, Wellcome Library, London. Wellcome Images http://wellcomeimages.org V0015642

Doecker system hospital buildings, along with other prefabricated buildings, featured in H. Franklin Parson’s book Isolation Hospitals, originally published in 1914 and revised in 1922 by R. Bruce Low.

This hospital pavilion, with is sun-catching angled wards, was a type provided by the Hygienic Constructions and Portable Buildings Ltd, Stockholm Road, South Bermondsey.

The 1922 second edition formed part of a series of books on public health and hygiene (the Cambridge Public Health series) designed to advise those working for the government and the medical profession. It addressed the way in which infectious diseases were contained and treated, and defended the government’s decision to spend a significant amount of money on isolation hospitals. Parsons and Low discussed the most advantageous designs and locations for these institutions, the containment of diseases such as small pox and tuberculosis, and the issues that arose around both the staffing of isolation hospitals and the changing provisions made for those patients affected by severe poverty.