The fascinating direct pressure CS

One way to extract the cork from the bottle is by means of direct pressure. The worm of a direct pressure corkscrew is penetrating the cork by pushing the handle inte the cork without turning or changing the grip. The direct pressure CS has a shaft which is pushed thrue a nut inside the tube causing a rotation of the worm.

 

The shaft is then secured by a looking mechanism. The cork itself can be removed by fixing the cork by hand. There are a few different locking devices. Generally there are two principles for locking the shaft, a spring assisted device and a device were the shaft is secured by a notch. However, only a few mechanisms were to survive day to day usage.

 

From left - Charles Hull 1868 us patent , a Newton ratchet mechanism and a Hatfield 1904 patent . Further below a van Geison 1867 us patent CS nicely marked " Bazin exchange...." and a Julius Slöör swedish CS based on the patent by Qvarnstroem. Bazin was a partner to Joseph Mechi in London.

To the right below is a Qvarnstroem second patent retail market by Berndt August Hjort, the founder of BAHCO. Hyper super rare piece !

Charles Hull of Birmingham. In all respects - Perfect !


 

 

 

The van Geison patent. Made from a US patent maybe by Hull. However, strange enough, the CS has a mark - Bazin exchange....

A Newton ratchet mechanism.




 

A Swedish Julius Slöör direct pressure CS, patented by Qvarstroem.

A nice Hatfield. A functional Hatfield is quite uncommon.
 

A perfect example of a Qvarnstroem second patent. Patented 1896 and retail marked Berndt August Hjort, Stockholm. Hyper superrare !
Only six examples known and only two are marked.