| 摘要 |
A soleholder constitutes the coupling member of a four-bar linkage, which comprises levers pivoted to a baseplate and which is held in its normal position by a spring. The baseplate is provided with fixed abutments, which in the normal position of the toe iron are engaged by the levers at those ends thereof which do not carry the soleholder. Each abutment has a concave abutting surface, which at its mutually opposite sides adjoins a recess, which is capable after a spring-opposed movement of the soleholder to receive that lever which leads in the direction of movement so that so the soleholder can be pivotally moved to its open position without an effort. |
