Bolt setting gun with percussive drive - has axially displaceable barrel with rear exhaust-charged shoulder spaced by resilient sleeve

摘要

The gun is for the setting of bolts or nails in concrete or stone. It has a housing with a barrel which is axially displaceable relative to a section (6) contg. a cartridge store. The rear section of the barrel has a shoulder surface (8a), which faces away from the direction of settings and which is charged by the combustion gases. The front barrel section has a contact shoulder (8b) for the axial support of a support collar (12), which is placed onto the concrete (11) to be pierced. An elastic sleevelike element (15) of compressible synthetic is located between the barrel shoulder and the support material, which concentrically surrounds the barrel.