Method and apparatus for flexibilizing leather
OwnerJiri Dokoupilinventor
Life of this patent
Estimating the term…
Abstract
A method of, and apparatus for, flexibilizing or softening leather or like materials wherein opposite marginal regions or lines of at least one area section of the piece of material to be worked and extending at least partially over such piece of material are moved periodically in relation to each other. This relative movement comprises or consists of a movement component directed parallel to the plane of said piece of material. This can be achieved by means of at least two tools moved appropriately in relation to each other and acting on the material by imposing an alternating deformation thereon comprising a movement component parallel to the plane of the piece of material.
Claims24
In a method of flexibilizing or softening leather or the like material, comprising alternatingly deforming a piece of the material in the course of transport movement, the improvement which comprises the steps of:
- moving opposite marginal ranges of at least one area section extending at least partially over said piece of material periodically relative to each other, said relative movement at least comprising a component directed essentially parallel to the plane of said piece of material, whereby said piece of material is subjected to at least shearing forces essentially parallel to the plane of said material.
An apparatus for flexibilizing or softening leather or the like material, comprising at least two spaced tools for entraining an area section of said material therebetween, means for moving at least one of said tools in a direction opposite to said other tool and transverse to the direction of travel of said material for imposing an alternating deformation on a piece of said material, said tools extending at least partially over the piece of material and arranged at a mutual spacing from one another in a direction substantially parallel to the plane of the piece of material, said moving means imparting a path of travel to said tools comprising at least in one section thereof a component directed essentially parallel to the plane of the piece of material, said moving tools imparting at least shearing forces to said material essentially parallel to the plane of said material to cause flexibilizing deformation of said material being entrained by said tools.
An apparatus for flexibilizing or softening leather or the like material, comprising at least two tools, means for moving said tools relative to each other for imposing an alternating deformation on a piece of said material, said tools extending at least partially over the piece of material and arranged at a mutual spacing from one another in a direction substantially parallel to the plane of the piece of material, said moving means imparting a path of travel to said tools comprising at least in one section thereof a component directed essentially parallel to the plane of the piece of material further including means for reciprocating said tools including a rotating link guide, at least one of said tools is mounted rotatably for full or partial rotation in relation to a frame by means of at least two swinging or rotating link guide devices.
An apparatus for flexibilizing or softening leather or the like material comprising a plurality of adjacent work stations, each station having a pair of cooperating tool elements carrying interengaging projecting elements for entraining portions of said piece of material being flexibilized, means for moving the pairs of elements with a movement component parallel to the work plane while at the same time imparting a movement substantially perpendicular for gripping said material to effect entrainment of the material between adjacent tools.
Dependencies are inferred from the claim text.