Device for the slicking, stretching and drying of leather or similar flat materials such as hides, skins and the like
OwnerBohumil Stupeckyinventor
Life of this patent
Estimating the term…
Abstract
The invention relates to a device for fleshing, stretching and drying leather or similar flat materials such as skins and furs. The device consists of movable lamellae which can be extended from the center outwards and which under vacuum and the cooperation of a pressing device provides a smooth, gliding heatable contact surface on which the stretched and fixed piece of leather is simultaneously dried thereby minimizing any frictional forces encountered when stretching leather in a vacuum. Moisture is evacuated through channels, raised areas, perforations in one of the lamellae thereby improving the stretching effect and uniformity of the stretched leather across its entire surface without wrinkling.
Claims9
) Device for the dewatering, stretching and drying of leather and similar flat materials, thereby characterised that it possesses an interstice, sealed by a gasket (D) and connected to a vacuum source (VQ), for the leather piece (L) and consists of a support surface (AF), above which lamellae (LM1) are mounted with a drive mechanism (AV) to deploy them outwards from the centre, and a contact pressure device (AD1) of a stretchable membrane (M) connected to a separate stretching mechanism, thereby characterised that the lamellae (LM1) can be deployed outwards by a circular movement around a fixed pin.
) Device for the dewatering, stretching and drying of leather and similar flat materials thereby characterised that is possesses an interstice, sealed by a gasket (D) and connected to a vacuum source (VQ), for the leather piece (L) and consists of a support surface (AF) above which lamellae (LM1) are mounted with a drive mechanism (AV) to deploy them outwards from the centre and a contact pressure device (AD2), consisting of a second lamella system (LM2) fitted to a rigid, inextensible plate (P), connected to a stretching mechanism and mounted as a mirror image of the lower lamella system (LM1), thereby characterised that the lamellae (LM1, LM2) can be deployed outwards by a circular movement around a fixed pin.
) Device according to claims 1 and 2 thereby characterised that the support surface (AF) is smooth with low friction, consists of a material with high thermal conductivity and is heated by thermal energy in the form of hot water, oil or another medium.
) Device according to claims 1 to 3 thereby characterised that the support surface (AF) has channels or perforations to drain the moisture from the leather.
) Device according to claims 1, 3 and 4 thereby characterised that the contact pressure device (AD) possesses a stretchable membrane (M), fitted with ist own stretching mechanism, that presses the leather piece (L) against the lamellae (LM1) on the support surface (AF).
) Device according to claims 1, 3 and 5 thereby characterised that the stretchable membrane (M) possesses channels, nubs, perforations and the like for the drainage of moisture from the leather.
) Device according to claim 2 thereby characterised that the rigid, inextensible plate (P) possesses channels, nubs, perforations and the like for the drainage of moisture from the leather.
) Device according to claims 1 to 7 thereby characterised that the moveable lamellae (LM1, LM2) present a sliding surface to the support surface (AF) and a surface able to move with the leather piece (L) laid on it.
) Device according to claims 1 to 8 thereby characterised that the drive mechanism (AV) for the deployment of the lamellae systems (LM1, LM2) is of mechanical, hydraulic or pneumatic design.