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No. C100 Crocheted Boudoir Cap (1916): vintage crochet pattern
A boudoir cap whose band is a chain of seventeen scalloped shells worked one from another and caught back to the second shell before, with the crown filled in afterwards by rows of chain loops criss-crossed to the band, and two shell rosettes and oval drop ornaments sewn on.
By the crochetpatterns.io editorial team · Updated · Editorial policy · pattern testing in progress

| Detail | Value |
|---|---|
| Skill level | Advanced |
| Yarn weight | Lace (#0) |
| Yardage | Not printed. The book prints a yardage for only one design in the whole volume, and not for this one. (as printed; yardage not given) |
| Hook | 1.9 mm |
| Gauge | No gauge printed. |
| Finished size | Not printed; the band is made of 17 shells along each edge, or more if the work is tight or a larger band is wanted. |
| Time | about 7 hours |
Materials
- Size 20 mercerized cotton crochet thread, ecru — approximate; the original was 3 balls of ecru Artamo Cordonnet No. 15, a size no longer commonly made
- Steel crochet hook (original: No. 5 steel hook)
- Tapestry needle
- Hook: Start with 1.9 mm (US steel 5) — approximate; change size until the band lies flat
Yarn Kit & Substitution Options
This pattern calls for 350 yards of weight #0 yarn. Select a suggested yarn to see required skeins and estimated cost:
Caron Simply Soft · 100% Acrylic
315 yds per skein · High-yield yardage, silky no-scratch texture
2 skeins required
approx. $$10.98 total
Abbreviations (US terms)
- chain
- slip stitch
- single crochet
- double crochet
- stitch
- stitches
- round
- row
- repeat
- skip
- space
- loop
- shell
- increase
Notes before you start
- Source: "Crocheted Boudoir Cap No. C100" (C100), The Artamo Crochet Book No. 1, Bentley-Franklin Company, New York, 1916. Public domain in the USA.
- As printed — materials: 3 Balls Ecru “ARTAMO” Cordonnet No. 15.; 1 Steel Crochet Hook No. 5.. Gauge: Not given.
- Modernisation note: Stitches are converted by this book's own key (“The Rudimentary Stitches of Crochet”, book pages 2-3), not by name. The key defines: chain (ch); “single crochet (s. c.)”, sometimes called tight stitch or half stitch — draw up a loop and draw another loop through both loops on the needle, which is the modern US single crochet; “double crochet (d. c.)”, frequently called a plain — thread over, draw up a loop (3 loops on the needle), draw through 2, then draw through the 2 remaining, which is the modern US double crochet; “short double crochet” — thread over, draw up a loop, draw the thread through all 3 loops at once, which is the modern US half double crochet; “treble crochet (t or tr)” — thread over twice, draw up a loop (4 loops), then cast off 2 at a time three times, which is the modern US treble; “long treble crochet”, also called double treble in the directions — thread over three times and cast off 2 at a time until all loops are worked off, which is the modern US double treble; slip stitch, “sometimes called the quarter-stitch”. So throughout this transcription the book's s.c. = sc, d.c. = dc, short d.c. = hdc, t/tr = tr and long treble/double treble = dtr. This book's heights already match modern US usage, so no shift of names was needed.
- Modernisation note: The book's wording is written in modern US form: “needle” = hook; “thread over (the needle)” = yo; “skip” = sk; “pick up a loop” = draw up a loop; “narrow” = decrease; “widen” = increase; “picked up on the double thread” = worked under both loops; “picked up on the back thread” = worked in the back loop only; “join in a ring” = sl st to join into a ring. Ordinal row and round names (“1st row”, “2nd round”) are written Row 1, Rnd 2 and so on.
- Modernisation note: The book's general note on the asterisk is followed (book page 3): the first asterisk is passed without notice, and a second asterisk sends the worker back to the first and repeats from that point.
- Modernisation note: Long printed paragraphs are split into one row, round or step per line; stitch order and counts are unchanged. Section headings added for navigation.
- Modernisation note: “Artamo” was a brand of cotton sold by the publisher and described on the book's back cover: Cordonnet, a six-cord crochet cable cord for crochet and lace making, in sizes 3, 5, 10, 15, 20, 30, 40, 50, 60, 70, 80 and 100; Crochet Perle, in white and fast colours, in sizes 3 and 5; and Four-Ply, four fine strands loosely twisted together, for embroidery. The modern equivalents given here are approximations only: Artamo Cordonnet reads as modern six-cord mercerized cotton crochet thread of the same number, Artamo Crochet Perle as modern pearl (perle) cotton of the same number, and Artamo Four-Ply as modern six-strand cotton embroidery floss. Sizes 15 and 25 are no longer commonly made; the nearest modern sizes are noted where they occur.
- Modernisation note: Hooks are printed only as “Steel Crochet Hook No. …” or “Bone Crochet Hook No. …” with no diameters, so no exact metric size can be read from the book. The metric sizes given are approximate starting points read across to the modern US steel-hook scale, in which a higher number is finer. Check: the old bone-hook numbers were never standardised and do not line up with any modern scale, so the millimetre size suggested for a bone hook is ours; work a swatch and change size to match the photograph.
- Modernisation note: No gauge is printed for this design. Work a swatch and change hook size until the work lies flat and matches the photograph.
- Modernisation note: The band is printed as a single running set of directions in which Row 2 is worked over and over, each new shell starting from a chain ring made at the end of the last; that structure is preserved, with the repeats given as sentences rather than numbered rows because the book numbers only Row 2.
- Modernisation note: Rounds 7 to 14 of the rosette are printed as “continue in this way … until 7 shell rounds in all have been made”; that instruction is written as a round range here, with nothing changed.
- Modernisation note: Check: the book prints no count for the drop ornaments, only that one is worked at the center of each scallop of the fifth shell at each side of the front.
- Modernisation note: Check: no colour is printed beyond the thread named in the materials.
- Modernisation note: No finished measurement is printed for this design.
- Modernisation note: Metric conversions added where a measurement is printed; the printed inches are unchanged.
Row progress: 0 of 4 done (0%)
Band
0 of 4 done- Ch 12 and join in a ring. Ch 3, 15 dc in the ring.Mark row complete
- Row 2: Turn, ch 3, 1 dc in each of the first 3 dc, worked under both loops. * Ch 4, 1 dc in each of the next 3 dc, and rep from * across the row, when there will be 5 groups in all, with 4 chain loops between them. Turn, 1 sc in the center dc of the first group, worked under both loops; 7 sc in the chain loop. Work in this way over each loop and each group excepting the final one. After 7 sc have been worked in the final loop ch 8 and catch in the end of the row. Turn, ch 3, 15 dc in this new ring, and rep from the beginning of Row 2 until the second shell is completed.Mark row complete
- The third shell is worked in the same way, but at the end of Row 2 it is caught to the third scallop of the first shell. The fourth shell is caught to the second shell, and each shell is caught to the second preceding shell in the same manner.Mark row complete
- Continue in this way until there are 17 shells along each edge, and the length is sufficient for the band, joining the last 2 shells to the first 2 shells. If the work has been done too tight or an extra large band is required, more shells may be added, as needed.Mark row complete
Working on:
Ch 12 and join in a ring. Ch 3, 15 dc in the ring.
Continue this pattern
The rest of the No. C100 Crocheted Boudoir Cap (1916) pattern is in the Vintage Crochet Hats, Bags & Accessories
Still to come in the full pattern:
- Crown
- Rosettes (make 2)
- Drop ornaments
- Finishing
Included with 202 patterns for $12 — $0.06 per pattern.

Errata
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Frequently asked questions
Where is the Crocheted Boudoir Cap No. C100 pattern from?
It was published as "Crocheted Boudoir Cap No. C100" in The Artamo Crochet Book No. 1 by Bentley-Franklin Company, New York in 1916. The publication is in the public domain in the United States; this version is transcribed and modernised by crochetpatterns.io.
What yarn or thread do I need for the Crocheted Boudoir Cap No. C100?
Size 20 crochet cotton (nearest to the printed No. 15; approximate). Not printed. The book prints a yardage for only one design in the whole volume, and not for this one.
What hook should I use?
Start with 1.9 mm (US steel 5) — approximate; change size until the band lies flat Gauge: No gauge printed.






