Sunday, May 10, 2009
Clogs incorporate many styles from slip-ons to lacing. Blutcher and Derby style lacing clogs are especially popular and well-known companies continue to make them. These include the long established Swedish firm Troentorptoffel who produce clogs in Bastad (pronounced bow-stodd). Mia Clogs and Olaf Daughters (now closed) were Swedish producers of popular lines throughout the 60s, 70s, and 80s. Berkemann is a well-known German company and make orthopaedic clogs; Danish clog makers, Dansko and Sanita still produce quality clogs.
The successful secret of all shoes is the tread line across the ball of the foot which results when the heel height and toe spring are matched. The rigid lever of the shoe allows the foot to pivot against the ground during stance phase and propel effortlessly forward. Clogs shaped to meet the contours of the sole of the foot further reduce peak pressures across the area and give the shoe added comfort.
The same principal was used with exercise sandals, popularised by Dr Scholl in the sixties and seventies.
Critics of clogs frequently dismiss them as improper footwear for general wear on the basis they do not provide adequate support to the foot during locomotion. Provided clogs fit with the tread line and ball of the foot in close approximation, then the shoes provide the same functional support as any other. For those navigating reasonably flat surfaces and at a leisurely pace clogs provide adequate protection for most active people.
There is a Conformite Europeenne (CE) classification for the Dutch clog. This was awarded in 1997 when the Netherlands organisation for Applied Scientific Research published safety requirement, results. According to CE regulations clogs must be able to withstand temperatures of -20 degrees C to 150 degrees C without degrading; they should support peak pressures of 75kg and water should not destroy the soles. In the original tests pressure of 400kg on the instep and 750 kg on the nose of the clog failed to make an impression, and lastly the clog endured the fall of a blunt axe of 20kg from a height of 50 cm. people. The following is a list of UK clog makers taken in good faith from the Morris Federation home page.
Time to put my feet up! Clog-maker who runs father-and-son business finally closes the doors after 65 years making wooden shoes
History of Walkley Clogs