Xem Studiomeasured geometry

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Tackle beam 240 × 20 × 12 with Ø3 sockets every 5 mm

What holds the fixed blocks and rope ends of a model tackle? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: tackle beam, pulley beam, socket rail, viga para aparejos, Flaschenzugbalken

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

length
240.0 mm
width
20.0 mm
height
12.0 mm

Notes

  • 240 × 20 × 12 bar with a row of Ø3 × 8 deep sockets on one face every 5 mm (x = −115 … 115): block stems and rope ends plug into it at any 5 mm position. Overhead it is the beam; turned over it is the floor plate.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Tackle beam 240 × 20 × 12 with Ø3 sockets every 5 mm size chart

dimensionvalue
bar240 × 20 × 12 mm
sockets47 × Ø3 × 8 deep, 5 mm pitch

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. 12: 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

tackle-beam-240-socketsbeam, sockets open on the z = 0 faceSTEP · STL
Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.
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Plain text: sheet.txt · JSON: /api/geometry?object=tackle-beam-240-sockets

Tackle beam 240 × 20 × 12 with Ø3 sockets every 5 mm, isometric render of a generated part
Render of tackle-beam-240-sockets from the free STEP; not to scale.

Fits with

Single fixed pulley (power equals weight), isometric render of a generated part
Single fixed pulley (power equals weight)3 sizes★ 1 file
Single movable pulley (power half the weight), isometric render of a generated part
Single movable pulley (power half the weight)3 sizes★ 1 file
Blocks and tackle, two sheaves in each block (4 : 1), isometric render of a generated part
Blocks and tackle, two sheaves in each block (4 : 1)4 sizes★ 1 file
Single Spanish burton (3 : 1), isometric render of a generated part
Single Spanish burton (3 : 1)4 sizes★ 1 file
Spanish burton with a lower block (4 : 1), isometric render of a generated part
Spanish burton with a lower block (4 : 1)4 sizes★ 1 file
Two fixed pulleys and one movable pulley (2 : 1, pull upward), isometric render of a generated part
Two fixed pulleys and one movable pulley (2 : 1, pull upward)3 sizes★ 1 file
Pulleys of the first system, 2 movable pulleys (4 : 1), isometric render of a generated part
Pulleys of the first system, 2 movable pulleys (4 : 1)4 sizes★ 1 file
Pulleys of the first system, 3 movable pulleys (8 : 1), isometric render of a generated part
Pulleys of the first system, 3 movable pulleys (8 : 1)4 sizes★ 1 file
Pulleys of the third system, three pulleys (7 : 1), isometric render of a generated part
Pulleys of the third system, three pulleys (7 : 1)4 sizes★ 1 file
Two single blocks rove to advantage (3 : 1), isometric render of a generated part
Two single blocks rove to advantage (3 : 1)4 sizes★ 1 file

Questions

What holds the fixed blocks and rope ends of a model tackle?

240 × 20 × 12 bar with a row of Ø3 × 8 deep sockets on one face every 5 mm (x = −115 … 115): block stems and rope ends plug into it at any 5 mm position. Overhead it is the beam; turned over it is the floor plate.