Basic double bed ripples

As discussed in the comments of the previous post, the double bed pin tuck is the easiest ripple stitch pattern to knit, if you have a double bed machine or any knitting machine with a ribber. The basic idea is to knit an uneven double fabric emphasizing the greater number of rows on one side. A very basic pattern (not pictured)  on the Passap would be:

1. Knit/knit RC2 (Back bed knits all needles, front bed knits all, 2 passes of the carriage). Passap DM80 = N/N
2. Slip/knit RC6  (Back bed knits misses all needles, front bed knits all needles for the ridges, 6 passes of the carriage). Passap DM80 = GX/BX
3. Repeat Steps 1 and 2. 

Each time Step 1 is repeated the uneven knitting is anchored in place, creating a ripple effect or double bed pin tuck. To make the ripples stand out even further, the stitch size can be slightly smaller than usual in Step 1, and the stitch size for the knitting bed can be slightly larger than usual in Step 2. 

What makes this technique really interesting is when more than one color is used and only certain needles are selected to knit during Step 2. Here are some examples:

Also known as embossed rippled jacquard, the taupe was used for Step 1 (full needle rib)  and the cream was used  for selected needles in Step 2.

Here's another example of an embossed rippled jacquard.

Here's an example of how to set up an embossed ripple:

1. Color 1:  Knit/knit RC2 (Back bed knits all needles, front bed knits all, 2 passes of the carriage). Passap DM80 = N/N
2. Color 2:  Slip/slip RC6  (Back bed knits misses all needles, front bed knits selected needles only for the ridges, 6 passes of the carriage). Passap DM80 = GX/BX
3. Repeat Steps 1 and 2. 

In my next post I'll show examples of another type of double bed rippled pattern, one that's not considered "embossed".

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Edited 05June2013 to correct errors and for clarification.