Gottlieb Daimler - The Grandfather Clock Engine (1885)

The Grandfather Clock Engine (1885)

In late 1885, Daimler and Maybach developed the first of their petrol engines, which featured:

• a single horizontal cylinder of 264 cc (16 cu in) (58×100 mm, 2.28×3.94 in)
• air cooling
• large cast iron flywheel
• surface carburetor
• hot tube ignition system (patent 28022)
• cam operated exhaust valves, allowing high speed operation
• 0.5 hp (370 W)
• 600 rpm running speed, beating previous engines, which typically ran at about 120 to 180 rpm
• weight of around 50 kg (110 lb)
• height of 76 cm (30 in)

In 1885, they created a carburetor which mixed gasoline with air allowing its use as fuel. In the same year Daimler and Maybach assembled a larger version of their engine, still relatively compact, but now with a vertical cylinder of 100 cc displacement and an output of 1 hp at 600 rpm (patent DRP-28-022: "non-cooled, heat insulated engine with unregulated hot-tube ignition"). It was baptized the Standuhr (Grandfather Clock), because Daimler thought it resembled an old pendulum clock.

In November 1885, Daimler installed a smaller version of this engine in a wooden two wheeler frame with two outrigger wheels, creating the first internal combustion motorcycle (Patent 36-423impff & Sohn "Vehicle with gas or petroleum drive machine"). It was named the Reitwagen (riding car). Maybach rode it for three kilometers (two miles) alongside the river Neckar, from Cannstatt to Untertürkheim, reaching 12 kilometres per hour (7 mph).

Also in 1885, but unknown to Maybach and Daimler, only sixty miles away in Mannheim, Karl Benz built the first true automobile using an integral design for a motorized vehicle with one of his own engines. He was granted a patent for his motorwagen on January 29, 1886.

On March 8, 1886, Daimler and Maybach secretly brought a stagecoach made by Wilhelm Wafter into the house, telling the neighbors it was a birthday gift for Mrs. Daimler. Maybach supervised the installation of a larger 1.1 hp 462 cc (28 cu in) (70×120 mm, 2.76×4.72 in) version of the Grandfather Clock engine into this stagecoach and it became the first four-wheeled vehicle to reach 16 kilometres per hour (10 mph). The engine power was transmitted by a set of belts. As with the motorcycle, it was tested on the road to Untertürkheim where nowadays the Mercedes-Benz Arena, formerly called the Gottlieb-Daimler-Stadion, is situated.

Driven by Daimler's desire to use the engine as many ways as possible, Daimler and Maybach used the engine in other types of transport including:

• on water (1886), by mounting it in a 4.5 metres (15 ft) long boat and achieving a speed of 6 knots (11 km/h; 6.9 mph). The boat was called Neckar after the river where it was tested. (patent DRP 39-367). This was the world's first motorboat and boat engines soon would become Daimler's main product for several years. The first customers expressed fear the petrol engine could explode, so Daimler hid the engine with a ceramic cover and told them it was "oil-electrical".
• street-cars and trolleys.
• in the air in Daimler's balloon, usually regarded as the first airship, where it replaced a hand-operated engine designed by Dr. Friedrich Hermann Wölfert of Leipzig. With the new engine, Daimler successfully flew over Seelberg on August 10, 1888.

They sold their first foreign licenses for engines in 1887 and Maybach went as their representative to the 1889 Paris Exposition to show their achievements.