| 摘要 |
Apparatus (22) for making an adaptor which is used in heating and ventilation systems and which is used to connect ducting which is of a square cross sectional shape to ducting which is of a circular cross sectional shape, which apparatus (22) comprises: a work area for receiving sheet metal to be made into the adaptor a creasing member (28) which is for creasing the sheet metal on the work area ; a pivot member (30) about which the sheet metal is pivoted on the work area such that the creasing member (28) is able to make a plurality of creases which are in the sheet metal and which extend from the pivot member (30) in order to produce a transition part (8) of the adaptor which is positioned between a first end (4) of the adaptor which is of the square cross sectional shape and a second end (6) of the adaptor which is of the circular cross sectional shape.
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