Feed pawl for the 24-tooth Ø40 ratchet (pivot 30 mm from the wheel axis) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/ratchet-feed-pawl-24t-d40/  (CC BY 4.0)
Basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance
Catalog version: 2026-10-20

Overall (mm): length 18.39, width 8.0, height 6.0
- 6 mm pawl with a Ø8 boss on a Ø3 pivot and a narrow nose whose end face is cut to lie on the steep face of a 3 mm ratchet tooth over 80 % of its depth (2.4 mm): it drives the wheel through face contact, not a point. Pivot to nose 14.39 mm; designed for a pivot 30 mm from the wheel's axis.
- The same face-contact pawl design as the ratchet-wheel pawls (pawl-24t-d40), drawn here for a feed lever's pivot.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

dimension  value
pivot hole  Ø3, Ø8 boss
pivot to nose  14.39 mm
nose face  2.4 mm, on the tooth's steep face
thickness  6 mm

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Henry T. Brown (1868, public domain): Five Hundred and Seven Mechanical Movements — scan on archive.org — web — Publisher's page; dimensions are facts — https://archive.org/details/fivehundredseven00browiala
- 507movements.com: Brown's movement No. 225: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_225.html
- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/ratchet-feed-lever-mechanism/

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/ratchet-feed-pawl-24t-d40/index.json
API: https://xemstudio.com/api/geometry?object=ratchet-feed-pawl-24t-d40