Diverse industrial development in the 18th century – machine mills, silk saws and factories

Much of what happened in the 18th century was a further development of older technology. Alongside the small and simple stream saws came large grist and sifting mills – also called “Dutch mills” or “machine mills”. The first grist mill was established by Peder Tyrholm, who bought the Borge farm in Nedre Eiker and renamed it Møllenhof. He received a royal privilege to operate a grist mill in 1737, and in 1756 this was expanded to operate a sifting mill, which was based on grinding imported wheat. Later, Møllenhof was taken over by the famous mill builder Godberg Poulsen from Flensburg. Both grist and sifting mills became increasingly common during the 18th century. There were machine mills at Mjøndalen, on the Fossesholmsgrunn near Vestfossen and Hærebro near Skotselv.

At the same time, important improvements were made at the sawmills. This was particularly linked to the invention of the "silk saw", which meant that one had several saw blades in the same frame. Instead of cutting one board at a time, one could then cut many boards at once. However, it was not simply allowed to increase production. In 1688, quantity regulations had been introduced, which set a ceiling on how much could be cut each year at the individual sawmill. Some sawmill owners then began to buy up smaller sawmills and transfer the quantity from there to the larger sawmills. Vestfossen and Skotselv consolidated their position as the largest sawmill locations, but sawmills also grew rapidly in Mjøndalen, by the Hoenselva and at Vendelborg during the 18th century.

Other forms of industry also emerged during the 18th century. At Møllenhof, the production of linseed oil and green soap was started in addition to the groat and sifting mills.

 

The term "silk saw" is used for a gang saw with several blades. The oldest water saws had only one blade, and the same log had to be cut many times. It could take many hours, even days, to cut a large log into planks and tables. With silk saws, the entire log could be cut in one operation. Of all the important technological innovations of the 18th century, the silk saw was perhaps the one that had the greatest impact on Eiker.

 

At Hoenselva there were both wadmelstampers, which stamped wool into wadmels, and feldbereder tampers, which stamped hides to be used in the tanneries. Nail hammers appeared in many places, including at Skotselv and in Vestfossen. A small nail hammer in Dørja was moved to Krokstadelva, where it was expanded into a large enterprise under the name Krogstad Spiiger Fabrique. It was in operation for more than 100 years, and eventually also produced other iron products. Even more advanced was supposedly the hardware factory Friderichsminde, which was established at Stensrudfossen in Bingselva at the end of the 18th century. It was actually located in Modum, but was run by Frantz Neumann, who was the owner of Hassel Jernverk.

 

Farm grinders and stream saws

Mills and mills are documented in Eiker in written sources from the late 13th century, but have probably existed since the Viking Age. From Hoenselva we know the name Kverne, close to the place where Eiker Mølle is located today. The place name "Mjøndalen" comes from "Mylnardalen" – Mill Valley. At Vestfossen the noble estates Berg and Foss had their mills, and there were also large mills at Krokstadelva and Solbergelva, where the owners most likely ground the grain for many of the farms nearby.

This was also industry, in the sense that water power was used to perform the work instead of muscle power. But the difference was of course great between the small mills by streams and rivers and the factories of the industrial age.

The first water saws were not particularly large or complicated structures either. We estimate that the first up-and-over saws at Eiker were built around 1500, and when the Eikværings were required to pay taxes to Akershus Castle in 1528-29, many of the farmers paid in the form of sawmills. Within a few decades, more than 100 large and small water saws were built around Eiker, and sawmilling and lumber trade became an important industry for the Eiker farmers.