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Lewis centre piece 10 × 14 × 50, Ø6 pin hole

What is the centre piece of a lewis? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: lewis centre, lewis key, cuña central, Mittelkeil (Wolf)

Exact dimensions. True size, with no printing tolerance added.

length
10.0 mm
width
14.0 mm
height
50.0 mm

Notes

  • Parallel-sided 10 × 14 × 50 bar with a Ø6 cross hole 8 mm from its top: driven down between the two side wedges it forces them out against the dovetail's walls; the shackle pin goes through all three pieces.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Lewis centre piece 10 × 14 × 50, Ø6 pin hole size chart

dimensionvalue
bar10 × 14 × 50 mm
holeØ6, 8 mm from the top

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Henry T. Brown (1868, public domain)Five Hundred and Seven Mechanical Movements — scan on archive.orgwebPublisher's page; dimensions are facts
507movements.comBrown's movement No. 493: figure, his text and an animationwebPublisher's page; dimensions are facts
Xem StudiodrawingwebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json

lewis-centre-piece-10x14x50centre piece, z −30..20, pin hole along X at z 12STEP · STL
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Plain text: sheet.txt · JSON: /api/geometry?object=lewis-centre-piece-10x14x50

Lewis centre piece 10 × 14 × 50, Ø6 pin hole, isometric render of a generated part
Render of lewis-centre-piece-10x14x50 from the free STEP; not to scale.

Fits with

Lewis (three-piece stone lifter in a dovetail hole), isometric render of a generated part
Lewis (three-piece stone lifter in a dovetail hole)4 sizes★ 1 file

Questions

What is the centre piece of a lewis?

Parallel-sided 10 × 14 × 50 bar with a Ø6 cross hole 8 mm from its top: driven down between the two side wedges it forces them out against the dovetail's walls; the shackle pin goes through all three pieces.