Return device for the projectile of a gripper projectile weaving machine
AssigneeSulzer Brothers Limited
InventorHans Demuth
Life of this patent
Estimating the term…
Abstract
The return device for the projectiles of a gripper projectile weaving machine has an end position brake employing an abutment in the form of a piston which is guided in the cylinder and which experiences the light pressure of a restoring spring. The ratio of the mass of the projectile to the mass of the piston at a given projectile speed is such that the projectile stops immediately upon striking the piston. The piston does not experience local wear over extended periods of time and obviates any need for a means to prevent a bounce-back of the projectile.
Claims12
A return device for projectiles of a gripper projectile weaving machine, said device including
- an end position brake having a cylinder, a piston guided within said cylinder to move from an initial position thereof upon impact of a projectile thereon and a braking and restoring device in said cylinder for returning said piston to said initial position, said piston having a mass relative to a projectile mass to cause the projectile to come to a stop immediately on impact upon striking said piston in said initial position.
A return device for a gripper projectile weaving machine comprising
- an endless conveying chain for conveying a series of projectiles;
- a projectile lift at one end of said conveyor chain for sequentially receiving each projectile of a series of projectiles conveyed on said chain, said lift being movable from a projectile receiving position to a raised position;
- and
- a brake adjacent said lift for arresting movement of each respective projectile received in said lift, said brake having a cylinder, a piston guided in said cylinder to abut a projectile received in said lift at an initial position thereof and having a mass relative to the mass of the projectile to stop the projectile in a stop position immediately upon impact of the projectile against said piston while moving away from said initial position, and a braking and restoring device in said cylinder for returning said piston to said initial position.
A brake for a return device in a gripper projectile weaving machine, said brake comprising
- a cylinder;
- a piston guided in said cylinder to abut a gripper projectile at an initial position thereof and having a mass relative to the mass of the projectile to stop the projectile in a stop position immediately upon impact of the projectile against said piston while moving away from said initial position;
- and
- a braking and restoring device in said cylinder for returning said piston to said initial position.
Dependencies are inferred from the claim text.