Device and method for adjusting a force applied to a movable element

The method for independently adjusting a first and a fourth force applied to a platform, comprising the steps of:

• connecting the platform and a base element with a scissors-type linkage;
• mounting a first gas spring to the scissors-type linkage at a first mounting point and mounting the first gas spring to the base element at a second mounting point;
• mounting a second gas spring to the scissors-type linkage at a third mounting point and mounting the second gas spring to the base element at a fourth mounting point;
• applying the first force to the platform in an upper position and applying a second force to the platform in a lower position using the first gas spring;
• applying a third force to the platform in the upper position and applying the fourth force to the platform in the lower position using the second gas spring;
• moving at least one of the first and the second mounting points along a constant force curve, so that the second force remains constant as the first force is adjusted;
• and
• moving at least one of the third and the fourth mounting points along a constant force curve, so that the third force remains constant as the fourth force is adjusted.

A device for adjusting a first force applied to a movable element, comprising:

• a movable element;
• a base element;
• a scissors-type linkage, the scissors-type linkage connecting the base element and the movable element;
• and
• a force applying device applying a first force to the movable element in a first position of the movable element and applying a second force to the movable element in a second position of the movable element;
• the force applying device being mounted to the scissors-type linkage at a first mounting point and being mounted to the base element at a second mounting point, at least one of the first and second mounting points being movable along a constant force curve, so that the second force remains constant as the first force is adjusted.

A device for adjusting a first force applied to a movable platform of a printing press, comprising:

• a base element being part of an operation deck of the printing press;
• a scissors-type linkage, the scissors-type linkage connecting the base element and the movable platform, the scissors-type Linkage including at least two pairs of scissors legs;
• and
• a gas spring applying the first force to the movable platform in an upper position of the movable platform and applying a second force to the movable platform in a lower position of the movable platform;
• the gas spring being mounted to the scissors-type linkage at a first mounting point and being mounted to the base element at a second mounting point, the second mounting point being movable along a constant force curve, so that the second force remains constant as the first force is adjusted.

A printing press comprising a device for adjusting a first force applied to a movable element, the device including:

• a movable element;
• a base element;
• a scissors-type linkage, the scissors-type linkage connecting the base element and the movable element;
• and
• a force applying device applying a first force to the movable element in a first position of the movable element and applying a second force to the movable element in a second position of the movable element;
• the force applying device being mounted to the scissors-type linkage at a first mounting point and being mounted to the base element at a second mounting point, at least one of the first and second mounting points being movable alone a constant force curve, so tat the second force remains constant as the first force is adjusted.