Original drawings of Gustav Niemann´s invention (Kaiserliches Patentamt – the original patent in private collection of the author)

On the hottest day of 2022 mercury levels in Berlin’s thermometers hit 37.5°C. That was the official reading. The unofficial ones – as in many places in the city the temperatures exceeded the latter – had both guests and residents perspire profusely and gasp for air in sizzling desperation. And by the look of it, with our climate spinning even further out of control, this year we are likely break that record.

Headgear galore in this 1906 photo of the junction Unter den Linden / Friedrichstraße made by Max Missmann and published “Berlin Leben” magazine. Image in public domain via Zentrale Landebibliothek Berlin.

What you need to survive such scorchers are, first and foremost, water plus protective headgear. The latter has, however, one significant disadvantage: most hats tend to develop sub-tropical conditions inside the crown. You sweat, you suffer and eventually you use the hat to fan yourself with in order to cool down the overheated scalp. But what if your headgear cannot be used for that purpose? If you cannot take it off or if frantic flapping fails to produce the desired cooling effect? A Berlin inventor, convinced he had solved that problem, applied for a patent as early as in 1878.

In the 1870s no respectable person ventured into the public space bareheaded. Only children and the poor would have been seen with no hat or bonnet in the streets. However, although a covered head might have been a marker of one’s social standing (those who could afford a hat, made sure to wear it) but, from the practical point of view, it could also be a blessing and a curse. While ladies’ hats tended to be rather “airy”, providing a tad more ventilation to the often highly decorative (and it itself rather tricky in the heat) hairdos, men’s hats caused their wearers’ scalps to swelter and sweat. The greatest culprit among those headpieces was at the same time the then sacred symbol of Prussian militarism: the Pickelhaube. Its wearers, clad in thick uniforms and marching up and down Berlin’s exercise fields, often ended up feeling unwell und even collapsing. The spring and autumn army manoeuvres on the Tempelhofer Feld (former site of the Tempelhof airport, where the largest Berlin park spreads today) were nothing for the weak-hearted…

Autumn manoeuvres at the Tempelhofer Feld in early 20th century. Author unknown, image in public domain via geschichtsmaterialien.de.

According to Berlin’s 1879 address directory, potential help was to come from Admiralsstraße 15 in today’s Kreuzberg. The neighbourhood where Herr Niemann lived and worked, a stone’s throw from Kottbusser Tor, was also in a walking distance from several famous army barracks. It is, therefore, not unlikely that the engineer saw a sound business opportunity in his venture. Selling a functioning Pickelhaube ventilation system, or what Niemann described as Ventilationseinrichtung für Kopfbedeckung, to the Prussian military would have set him up for a lifetime. It is equally possible that Herr Niemann, professionally active in the field of ventilation anyway (sadly, History largely ignored the undoubtedly fascinating life of Gustav Niemann) simply wished to alleviate the pain of all profusely and uncontrollably sweating hat-wearers.

His invention was meant to offer relief in that air would be able better to circulate between the inside of the hat’s crown and the outside world. A small wind wheel or turbine – with ten wings made of a “light yet sturdy material” – was to be installed on top of the crown. The leather sweatband – which every Pickelhaube was fitted with to make it sit on the head firmly –  was to have small, approximately 1-centimetre wide sections carved out at regular intervals to create small openings. The leather sweatband would be held together by a cleverly inserted wiring. According to Herr Niemann’s computations, the rotating wind wheel inside the hat would have helped transport the “perspiratory vapours” outside, thus preventing draught inside the hat, “conserving” one’s hair and helping keep rheumatism, nausea and sunstroke at bay. As to whether it produced the desired effects, the patent offers no answers. The press, too, failed to report any potential triumphs.

Six months later two other gentlemen, Herr Block and Herr Günther, applied for a patent of their own. Registered under the number 6073 in the same category, it safeguarded the inventors’ rights to a “Sponge wreath – where but several drops of Schnaps [for soaking the sponge with, author believes] would be enough to lower the temperature through alcohol’s evaporation”. Did the sponge and the Schnaps help? Alas, yet again our curiosity must remain unfed and doubting. However, the Schnaps – in whichever form it might have been applied – was guaranteed to bring light, if temporary, relief to the sufferers.

And today? A quick search in the EPO (European Patent Office) databank shows that the exhausting race of human kind against the sweaty scalp has not been decided yet. However, with the next scorcher ante portas and no reliably functioning hat-ventilation in sight, remember: a glass of cold beer, enjoyed in the shade while fanning yourself with a just-read, folded newspaper is a perfectly reasonable alternative. And it’s completely patent-free.

“Berliner Weisse Beer Garden at the Gabriel Jager Brewery in Berlin”, painted by Franz Skarbina around 1878. The painting currently in the collection of Berlinische Galerie.

An abridged German version of the text was published in Berlin’s most popular daily, the “Tagesspiegel”, where you will find my weekly (new stories each Saturday) Berlin-history column “Aus der Zeit”: Kühler Kopf 1878: Ein Belüftungssystem für die preußische Pickelhaube (tagesspiegel.de)

Did you know that before it was named Großbeerenstraße (commemorating Prussian victory at the Battle of Großbeeren in the Wars of Liberation that Prussia fought with its allies against Napoleon), the now nearly 1.3 kilometre long street leading from the city centre to Viktoriapark in Berlin-Kreuzberg was called Monumentenstraße?

Completed in 1864 (the reason why you cannot find it – together with Yorckstraße or Gneisenaustraße – on the 1846 map above), the new road was first given a label commemorating as well as serving as a direction to the by then famous National Memorial to the Wars of Liberation installed on top of the old Weinberg (Wine Hill) in 1821.

However, not long afterwards that label changed hands: a bit of castling took place on the chessboard known as Tempelhofer Vorstadt (a district to which the area belonged), and the name Monumentenstraße was passed onto another road – the one leading to the Nationaldenkmal from the west.

Geological map of Berlin 1880 with the National Memorial in the future Viktoriapark.

By the time Viktoriapark was built (albeit only one – eastern – half of it as the western one would have to wait until the First World War), the streets around it had all been named after famous battles or military leaders in the wars against Napoleon. Well, almost all: Kleine Parkstraße – a 100-metre long street connecting Kreuzbergstraße with the park and the no-longer exisiting popular café – took its name from the enchanting, leafy recreation grounds named after the daughter of British Empress Victoria – Prussian Kaiserin Victoria.

Kleine Parkstraße and Viktoriapark on the 1910 map of Berlin.

If you want to learn more about the history of this fascinating and still very much beautiful Berlin-Kreuzberg district, you might enjoy a little audio-tour created by yours truly for her favourite walking itinerary in her old neighbourhood: the GPS-controlled audio-tour (with a GPS on you don’t have to do anything else but walk) is available via Voicemaps and can be downloaded to listen during a leisurely stroll.

https://voicemap.me/tour/berlin/templars-bunkers-and-prussian-glory-a-walking-tour-of-west-kreuzberg

In only two days the Berlin Wall would have turned 60 years old. Would have as luckily for all of us the monster was slayed and the deep cut that ran through the city, the wound that hurt millions, could at last begin to heal.

The scars it left are slowly fading, too, but nothing ever goes away without a trace. For years I have been taking amateur photos of the places where they still could be found. One of them reminded me of a certain spot in Kreuzberg: right off Oranienplatz (where I was once priviledged to share a fantastic, history-laden co-working space with a group of kind and witty people). Right around the corner, down Dresdner Straße and towards Berlin-Mitte where the Wall used to run right through the middle of the street. Corner Sebastianstraße and Luckauer Straße at what is today Alfred-Döblin-Platz.

Several years ago, while construction works for a new residential building on that historic street junction in Kreuzberg were picking up the pace, workers unsealed old cellars of the nineteenth-century tenements which had stood there before the Second Generation of the Berlin Wall was erected. As the wonderful photo by Willy Pragher taken on June 9, 1965 shows, the houses were still there when the First Generation Wall was built (Berlin Wall went through several stages of evolution and this image presents the early one).

Corner Luckauer Straße and Sebastianstraße photographed by Willy Pragher on June 9, 1965 (image through Landesarchiv Baden-Würtemberg W 134 Nr. 078754a).
Corner Luckauer Straße and Sebastianstraße photographed by Willy Pragher on June 9, 1965 (image through Landesarchiv Baden-Würtemberg W 134 Nr. 078754a).

Demolished somewhere around 1970 (the sources quote different dates but the most likely year is 1968), the buildings were not removed completely – the cellars remained. For years, after the Wall had been torn down, people walking down Luckauer Straße next to today’s Alfred-Döblin-Platz on hot summer days wondered about the strangely chilly draft sweeping their ankles as well as about the earthy, musty smell of the cellar in the air where no cellars could be. Several narrow gaps on the edge of the pavement where large stone steps typical of Berlin tenement entrance stairs led nowhere, proved the existence of the old basements which, contrary to everyone’s expectations, had not been filled.

Berlin_Sebastianstraße_Berliner_Mauer_009571 willy pragher 1961 baden würt LArch
Sebastianstraße in 1961: the southern side on the left belongs to Berlin-Kreuzberg (then in West Berlin) while the northern side was in East Berlin (now it is part of Berlin-Mitte). Photo by Willy Pragher, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0&gt;, via Wikimedia Commons.

The construction works I witnessed several years ago uncovered them again and brought to light what had remained buried for 56 years. It seems they had been used, at least parts of them, in the meantime, too: the tiles on the wall of one of the cellars were held by some sort of black foam that was neither nineteenth century nor pre-Berlin Wall. Perhaps the guards spent their time there? Or the place served some other Wall-related purpose? We will never know.

Within a week, maximum a fortnight, the old cellars were gone. It was a strangely satisfying feeling to be able to look into them after having known for years they were there, unreachable under the ground. They were another trace of Berlin’s past which had to go. But not all of it did. It never does.

The construction site in Luckauer Straße (image by notmsparker).
The construction site in Luckauer Straße in 2017 (image own).

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Between 1961 and 1989 border crossing Heinrich-Heine-Straße joined/divided West Berlin and East Berlin. It was erected along Prinzenstraße in western Kreuzberg and former Neanderstraße in what used to be East-Berlin district of Mitte. The name “Neanderstraße” vanished in 1960 when on July 22 the street officially became Heinrich-Heine-Straße.

Interestingly, the change also applied to a section of Prinzenstraße between Sebastianstraße and Annenstraße – obviously to the one located in the Eastern Zone of the divided city. The name “Prinzenstraße” commemorated Prussian Crown Prince Wilhelm who went on to become first King and the Kaiser Wilhelm I. A fact which caused some unease on the eastern side of the divide (the Hohenzollerns were high on the pet-hate list of the East German ruling party) and led to the aforementioned adjustment.

The photo above, taken by an amateur Berlin photographer, Roehrensee, in December 1989 shows the Kreuzberg side of the crossing seen from the island in the middle of the Moritzplatz where the photographer’s shadow points towards the east. But the crossing you see in the background was just a small section of the facility – its western entrance/exit as it was.

BorBoder-crossing Heinrich-Heine-Straße in 1968 (photo via Stasi-Mediathek, from Polizeihistorische Sammlung).

In between the latter and a similar arrangement on the opposite side of the crossing in East Berlin there lie a slalom of massive concrete blocks whose main purpose was to slow down the traffic and prevent anyone from gaining enough speed to endanger the security of the control point in both Prinzen and in Heinrich-Heine-Straße. Maximum speed within the border-crossing route was 10km/h.

This more or less standard precaution – not only between Kreuzberg and Mitte but on other border-crossings, too – proved to be lethally efficient. On April 17, 1962 Klaus Brueske, a 24-year-old lorry-driver from Berlin-Friedrichshain, and two of his friends, sped towards the border at 70km/h, trying to break through the border road-barriers in Heinrich-Heine-Straße in a truck loaded with gravel. Brueske, disillusioned with the situation in East Berlin and still mourning the loss of his job with the West Berlin engineering company, AEG (which he gave up after the Berlin Wall separated his home-district from his workplace), hoped to be able to reach West Berlin territory by simply going through the boom barriers put there into place.

The plan could have worked – the border was not as impermeable yet as it became later – and, in fact it, it did. But at the ultimate price. One of the border guards opened fire at the vehicle, shooting 14 times and hitting two of the three young men inside. The lorry came to a halt already in West Berlin, crashing heads-on against a wall in Prinzenstraße 34.

The lorry used by Brueske and his friends after it crashed against the wall (photo from the Polizeihistorische Sammlung)

After all three escapees had been taken to Urban-Krankenhaus in Grimmstraße on the southern side of the Landwehrkanal in Kreuzberg, where Karl Brüske was pronounced dead upon arrival. However, the cause of death were not the two bullets which hit his neck. It was asphyxia. Klaus Brueske died of suffocation, buried under the gravel he had earlier loaded onto the lorry. He was the 16th victim of the Berlin Wall – 16th person to die trying to leave the Eastern Sector of Berlin. The 16th Maueropfer, “the wall victim”.

Two years later another young man would attempt an escape on the same spot and using the same method. Although his escape was part of a drama and not of a plan. On December 25, 1965 27-year-old Heinz Schöneberger from West Germany was lethally wounded by a hand-gun bullet shot at him as the young man was only five metres away from the West Berlin territory.

He and his brother, driving a Ford Taunus hoped to be able to smuggle two East-German women out of the DDR (German Democratic Republic). The women, hidding under the front and the back seats, risked their lives as much as the Schöneberger brothers. It became terribly clear after the car had been stopped by the East German border control.

The same border-crossing photographed by Hans Seiler in 1968 (image via Landesarchiv Berlin).

After ordering the brothers to step out of the car, the guards discovered one of the young women under the back seat. Not waiting for the handcuffs to be snapped around his wrists, Heinz Schöneberger jumped back into the vehicle, locked all doors from inside and sped towards the West Berlin side of the border. Unable to go faster – the concrete slalom route did its job just as expected – he stopped, sprang out of the car, in an attempt to sprint the remaining ten metres.

He died on the western side of the border.