device for uppfangande of from a drilling or slaende tools in a handborrmaskin descending span with an elastic tool against the hall spanuppsamlare

摘要

The equipment catches material loosened by a mass onry drill, and includes an elastic vessel bearing against the face of the stone etc. The vessel (10) is unaffected by tool movement and is a cup (13) open towards the working face, in the base of which is a cup-shaped portion (15) open towards the motor (1). In the base (16) of the cup portion is a concentric hole (7) through which the tool passes. This hole can be of larger diameter than the tool (7), which the cup has a guide for supports (5) fixed to the machine.