Boot and shoe making – Sole machines – Laying and/or leveling
Patent
1984-10-18
1986-12-16
Schroeder, Werner H.
Boot and shoe making
Sole machines
Laying and/or leveling
12 38, 24463, 100272, A43D 2507, A43D 2506, B30B 502, A44B 2100
Patent
active
046285598
ABSTRACT:
The subject matter of the invention is a bonding press for bonding shoe soles to lasted uppers, comprising a fixed bed structure (1) including an exchangeable receptacle plate (6, 9) into the padded opening (8) of which a lasted upper (7) is inserted and fixed with the sole laid thereon and facing upwards, further comprising a pressing pad (2) to which a pressurized medium may be applied, the dimensionally stable cowl (10) of said pad being hingedly joined to the bed structure (1) and hermetically sealed towards the bottom by a flexibly expandable diaphragm (12), and comprising linear drive means (3) mounted to the bed structure for pivoting the cowl (10) and for producing the closing force. In order to achieve secure fixing of the pressing pad (2) in the closed position thereof with relatively small driving forces and to prevent undesirable opening and closing movements of the pressing pad in the event of failure or breakage of single structural parts, the invention provides that the linear drive means (3) engage with the cowl ( 10) through an articulated lever mechanism including two toggle levers (17, 21), wherein the relative distribution of weight of the cowl and of the articulated lever mechanism is matched in such a way that there is a weight counterbalance in any open position of the cowl (10). In addition, an automatically operative safety means against upward pivoting of the cowl (10) due to internal pressure may be provided.
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Meyers Steven N.
Schroeder Werner H.
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