| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint mortar supply gun for use in supplying joint mortar to a joint groove of an external wall. SOLUTION: A feeding shat 13 is carried forward by operating a lever handle 15 of a supply gun main body 10, then a pressing plate 14 set at the front end of the shaft is inserted from an opening 22 at the rear end of a mortar injection cylinder 20 mounted on a bearer 11, and joint mortar B filled into the cylinder 20 is pressure-discharged from a nozzle 23 at the front end of the tube. Thus, a joint mortar supply gun A is formed. Herein, the nozzle 23 is shaped into a frusto-conical shape and the bore of a front end opening is set to 9±3 mm. By setting these conditions, the joint mortar B can be pressure-discharged and prevented from leaking even if the mortar injection cylinder 20 is held in a manner facing downward.
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