Feeding device for effecting a longitudinally directed relative movement between a stem and the device proper
AssigneeOsa AB
InventorTorsten Forslund
Life of this patent
Estimating the term…
Abstract
A feeding device for effecting a longitudinally directed relative movement between a stem and the device proper comprises at least one feeding unit in the form of an endless band or band-like element which is drivable by means of at least one rotatable wheel. The endless element is composed of a large number of hingedly interconnected chain-forming links (11, 12) which are movable along the outer side or the periphery of an elongate guide bar and which, by bearing against said bar (10), are adapted to transfer substantially uniformly distributed bearing pressures to the stem substantially throughout the length of said bar.
Claims16
A feeding device for effecting relative longitudinal movement between a stem and said device, said device comprising at least one feeding unit comprising:
- an endless feeding element;
- at least one rotatable drive wheel for driving said endless feeding element, said drive wheel having a central axis perpendicular to the direction of said longitudinal movement;
- an elongated rigid frame having a peripheral edge and being operatively associated with said drive wheel and said endless feeding element, said frame element having an extension at one end thereof;
- said endless feeding element comprising a plurality of hingedly interconnected chain-forming links each with associated pin means or idling roller means, said links being movable along the peripheral edge of said rigid frame element and adapted to bear against said frame element, said chain-forming links being adapted to transfer substantially uniformly distributed bearing pressures to a stem along the length of said frame element when bearing against said frame element;
- said frame element extension having an oblique peripheral surface extending into said peripheral edge, said oblique peripheral surface extending at least to said central axis of said drive wheel;
- said drive wheel being operatively associated with said extension at said one end of said frame element, and comprising a plurality of projecting engaging means having a recess between adjacent engaging means with said projecting engaging means adapted to engage between adjacent pin means or idling roller means;
- said oblique peripheral surface having (a) an outer end positioned on a plane corresponding to an inner portion of said recesses and (b) a portion extending outwardly from said center axis of said rotatable drive wheel which merges into said peripheral edge whereby said pin means or idling roller means disengages from said driving wheel upon leaving engagement with said driving wheel.
Dependencies are inferred from the claim text.