STEPPING TYPE EXPANSION BOLT EXTRACTION GUN HSIN CHANG EXTRACTOR GUN

Description

YOU ARE LOOKING AT A VINTAGE (?) STEPPING TYPE EXPANSION BOLT EXTRACTION GUN.
PAT. # 18089 44885
IT LOOKS TO BE IN GOOD WORKING CONDITION.
The present invention is related to a stepping type expansion bolt extracting gun and, more particularly to a labor-saving extracting gun which comprises a gun barrel shifting mechanism and an arresting and releasing mechanism.
An expansion bolt is used to be punched in a pre-drilled hole on a wall to provide a support for hanging or fixation of an article. In contrary to regular iron or steel nails, one must drill a hole in advance for an expansion bolt to insert the bolt therein. When an expansion bolt is punched or inserted into the pre-drilled hole, the live spindle of the expansion is extracted to let the middle portion of the expansion bolt protrude outward inside the hole. By means of the live spindle extracting process, the expansion bolt is firmly secured to the wall. Regularly, there are two kinds of expansion bolts available in the market. One is a "push-in type" expansion bolt of which the live spindle must be punched in the pre-drilled hole by a hammer or other suitable tools to force the middle portion of the expansion bolt to protrude outward. The other is an "extracting type" expansion bolt of which the live spindle must be extracted by an extracting tool or the so called expansion bolt extracting gun, to let the live spindle of the expansion bolt be extracted outward so as to further let the middle portion of the bolt protrude outward. The present invention is an improvement in the convention expansion bolt extracting gun.
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