초록 ▼

The apparatus has a pair of spaced arms hinged at their lower ends to a base. The upper end of each arm supports a jaw which is used to grip the rubber mold. Each arm has a nut pivotably supported between the ends thereof which nut pivots about an axis parallel to the base and perpendicular to the c

The apparatus has a pair of spaced arms hinged at their lower ends to a base. The upper end of each arm supports a jaw which is used to grip the rubber mold. Each arm has a nut pivotably supported between the ends thereof which nut pivots about an axis parallel to the base and perpendicular to the centerline of the nut so that a long bolt, which is threaded in the nut and has its end pivotably anchored to the base, can rigidly support the arms in a substantially upright and variable position. Then by simply rotating each long bolt, the respective arm is made to rotate to change its angle it makes with the vertical.

대표청구항 ▼

An apparatus for working on a workpiece comprised of: a base; a pair of arms; a pair of blocks mounted on said base in spaced apart relationship; each of said blocks having a bore and said bores are disposed parallel to each other; each of said arms comprising of two spaced-apart parallel channels;

An apparatus for working on a workpiece comprised of: a base; a pair of arms; a pair of blocks mounted on said base in spaced apart relationship; each of said blocks having a bore and said bores are disposed parallel to each other; each of said arms comprising of two spaced-apart parallel channels; one of said blocks being disposed between said two spaced apart channels of a respective one of said arms; a pin disposed through each one of said bores in said blocks and through said two spaced apart channels of said respective one of said arms so that said arms rotate with respect to said base and substantially in the same plane; a jaw being pivotably mounted between the channels of each respective one of said arms; a nut member rotatably mounted between the channels of a respective one of said arms and between said block and said jaw; said nut member having a threaded hole formed therein disposed at right angles to the axis of rotation of said nut member; a long bolt threaded through a respective one of said nut member; anchor means disposed between said blocks for engaging one end of said long bolt so that said bolt is fixed axially and is capable of rotating about its own axis and on another axis, parallel to said pins and disposed passing through said anchor means.