Style lines from a vintage patternmaking handout

In my previous posting, “What are style lines?” I explained what style lines are. I showed how a few style lines can be used to transform a basic skirt and bodice into a vintage inspired fashion from a 1964 magazine photograph.

Today, I’m sharing classroom handouts from a vintage patternmaking book. The style lines used are easy to understand and clearly illustrated on the basic bodice. Based on my knowledge of patternmaking it looks like the “slash and spread” method was used. This means, the pattern was created by tracing the basic sloper. The style lines were then drawn. After that, the pattern was slashed and spread when tucks or gathers had to be created. Other patterns were simply cut along the style lines, like the one for the princess line bodice.

I estimate that these pattern transformations are from the 1940s.