PURPOSE: To heighten the efficiency of installation, by centering a template jig through piano wires and centering and installing a door frame with said template jig.
CONSTITUTION: A threshold 1 and a hanger case 2 are installed. The template jig 8 having a reference line 8A, a reference line 8B, a reference side 8C and a reference side 8D is placed on the threshold 1. The reference line 8A for the center of the width and the reference line 8B for the width are matched with the piano wires 3AW 3C. The template jig 8 is secured to the threshold 1 by fixtures. A door frame 6 previously assembled like a gate is inserted into the door opening. Sides 6C, 6D of right and left parts 6A of the frame 6 are matched with the reference sides 8C, 8D. The frame 6 is secured to the threshold 1 by fixtures. Then, the template jig 8 is removed from the threshold 1. The upper side 8E of the jig is placed in contact with the lower side 6B' of upper part 6B of the fram 6, and the template jig 8 is pushed to the door frame 6. The frame is secured to the hanger case 2 while the jig 8 is re-positioned with the piano wires 3A 3C. Thus, the door frame 6 is centered and installed without using any measuring instrument
OOHARA YUTAKA
WATABIKI HITOSHI
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