| 摘要 |
PURPOSE:To make it possible to perform cementing correctly at a constant measure by cementing making a vesicular disc formed spacer with plural protrusions inside inserted into the glass head part and a cap fitting supplied with cement in its interior pushed into the glass head part. CONSTITUTION:A vesicular disc formed spacer 5 with plural protrusions 6 inside is inserted into a glass head part 1, a cap fitting 3 supplied with cement 4 in its interior is pushed into the glass head part until its end face is in contact with the spacer 5, and cementing is performed in the state of having the spacer 5 included between the glass 2 and the cap fitting 3. As a result, the space between the cap fitting 3 and the shade part of the glass 2 is held always constant and the contact between the cap fitting 3 and the shade part of the glass 2 is securely prevented so as to perform the cementing of the cap fitting 3 in the right position. |
