Purlbed

Ottoman ridges › Rolls

Basic Ottoman rolls (double bed)

Even, closely packed horizontal tubes on one face; the other face flatter with slightly elongated stitches behind rolls; very regular, machine-crisp; rolls can graduate in size and change colour.

Machine types that can knit it

Demo swatch

Drawn for: Double-bed hand flat (V-bed)
Approximate preview worked out from the bed chart, not a photo.
Bed chart
15101520253035→←→←→←→←→←→←→←→←→←→←→←→←→←→←→←→←→←→←Back bedBoth beds (double jersey)1 square = 1 stitch × 1 row · read from the bottom · Hand flat (V-bed), 36 needles, half pitch
Needle notation, first steps
1. Rows 1–2: knit 2 rowsDouble jersey (all needles)carriage →backfront2. Transfer 36 stitches to theback bedbackfront3. Rows 3–8: knit 6 rowsBack bed onlycarriage →backfront4. Rows 9–10: knit 2 rowsDouble jersey (all needles)carriage →backfrontShowing needles L18–R6 of 36; repeat across the working area.

Steps

  1. Full-needle cast on, comb + weights.
  2. Yarn B, front bed off, knit k rows (back bed only).
  3. Yarn A, both beds, 2 rows.
  4. Repeat; vary k/colour.

The full card

What it looks like
Even, closely packed horizontal tubes on one face; the other face flatter with slightly elongated stitches behind rolls; very regular, machine-crisp; rolls can graduate in size and change colour.
How it behaves
Horizontal ridges, clean; depth limited (V-bed ~4–6 rows/roll).
How it works
Cast on full needle rib; roll rows: turn one bed's cams off so only one bed knits k rows while other bed's loops hold; then 1–2 DJ rows on all needles close the roll.
Machines
Double bed (domestic + ribber, or V-bed hand-flat like Dubied, or industrial). Combs/weights; hand take-down advised. No hold on V-bed hand-flat; forcing needles possible only on domestic.
Parameters
k = 2–6 rows (domestic can go higher); DJ rows 2 (min 1); tension: domestic SJ ~5, DJ ~4 (rib one step tighter because beds are farther apart); V-bed SJ ~2 numbers looser than DJ (book's typical range 10–18). Graduated rolls: 2→4→6→4→2.
Steps
1) Full-needle cast on, comb + weights. 2) Yarn B, front bed off, knit k rows (back bed only). 3) Yarn A, both beds, 2 rows. 4) Repeat; vary k/colour.
Charting
Grid row bands labelled "BB only" vs "DJ"; needle notation: two rows of needle marks (front/back), roll rows drawn only on the knitting bed; resting bed shown with held loops.
Limits and common problems
Under take-down → unformed stitches/drops; over take-down → held stitches break; too many roll rows → failure on V-bed.
Combines with
colour changes (tie on new colour if no changer), four-feeder machines for multicolour rolls.
Pieces and assembly
Dense, firm double fabric: good for structured panels, room dividers, blankets.

Written in our own words from machine manuals, knitting references and swatching. Knit a test swatch before a whole piece.

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