Patent ID: 8632447

Claim:
A chain-type magazine including: a box including a port defined therein; a chain-type conveyor including: links connected to one another so that each of the links can be pivoted relative to the other links about two axes that are perpendicular to each other; and holders each connected to a related one of the links for holding a tool; and the chain-type magazine also including: a spinning unit including a mounting assembly connected to the box; an elevating assembly movably connected to the mounting assembly; a rotary claw assembly rotationally connected to the mounting assembly for catching a selected one of the links; a connecting rod for connecting the elevating assembly to the rotary claw assembly; and a driving element for driving the elevating assembly to spin the rotary claw assembly and the selected link about one of the axes; wherein the mounting assembly includes a mounting plate and a restraining plate, wherein the claw assembly includes a claw located between the mounting plate and the restraining plate, wherein the mounting plate includes an arched groove defined therein, wherein the claw includes an arched rail movable inserted in the arched groove of the mounting plate, and wherein the claw includes an arched peripheral groove for movably receiving an arched edge of the restraining plate.