Sovereignty Module: Swing the Arm

Cover of Swing the Arm
Swing the Arm
Complete Fireplace Crane and Pot Hanger: From Bar to Hearth Cooking System
⟁ cover painted for this edition — the source module carried no illustrations

Complete Fireplace Crane and Pot Hanger: From Bar to Hearth Cooking System

The fireplace crane is the heart of hearth cooking, allowing pots to swing over and away from the fire. This campaign covers crane design, pivot mechanisms, adjustable hangers, and the complete hearth cooking system.

Chapter 1: Crane Components

ComponentMaterialFunction
Vertical post3/4-1 inch barPivot axis, mounts in fireplace
Horizontal arm3/4 inch barSwings over fire, holds hangers
Pivot pins1/2 inch rodTop and bottom pivot points
Trammel hook3/8-1/2 inch barAdjustable pot height
S-hooks3/8 inch barHang pots from arm
Pot hooks3/8 inch barVarious lengths for different heights

Chapter 2: Crane Construction

Fireplace crane: 1) Vertical post: 3/4 inch square bar, height of fireplace opening. 2) Forge pivot points at top and bottom of post. 3) Top pivot: tapered point fits into hole in lintel. 4) Bottom pivot: tapered point sits in hole in hearth stone. 5) Horizontal arm: 3/4 inch bar, extends 2/3 across fireplace width. 6) Forge arm perpendicular to post (forge weld or collar joint). 7) Arm must be rigid (no flex under load). 8) Arm swings in and out of fireplace on post pivots. 9) Maximum load: 30-50 pounds (full pot of stew).

DimensionSmall FireplaceMedium FireplaceLarge Fireplace
Post height24-28 inches28-34 inches34-40 inches
Arm length18-24 inches24-30 inches30-36 inches
Arm bar size3/4 inch3/4 inch1 inch
Load capacity30 lbs40 lbs50 lbs

Chapter 3: Trammel Hook

Trammel hook (adjustable hanger): 1) Two flat bars, one inside the other. 2) Outer bar: 1 inch wide, 18-24 inches long. 3) Inner bar: 3/4 inch wide, slides inside outer. 4) Holes punched in both bars at 1-inch intervals. 5) Pin locks bars at desired length. 6) Hook at bottom holds pot. 7) Hook at top hangs from crane arm. 8) Allows precise height adjustment (controls cooking temperature).

Trammel TypeAdjustment RangeComplexityHistorical Period
Ratchet trammelContinuousHigh17th-18th century
Pin trammel1-inch incrementsModerateMedieval onward
Chain trammelLink-by-linkLowAll periods
Sawtooth trammel1/2-inch incrementsModerate18th century

Chapter 4: Complete Hearth Cooking System

ItemFunctionHangs From
Crane armSwings pots over fireFireplace wall
Trammel hookAdjusts pot heightCrane arm
S-hooks (various lengths)Quick pot hangingCrane arm
Pot chainsHeavy pot supportCrane arm
GriddleFlat cooking surfaceCrane arm or trivet
Toasting forkToast bread at fireHand-held
Roasting spitRotate meatAndirons
Drip panCatches meat drippingsBelow spit

Chapter 5: Installation

Installation StepMethodCritical Factor
Mark pivot pointsPlumb bob from lintel to hearthMust be perfectly vertical
Drill top pivot holeMasonry bit into lintelHole must be plumb
Drill bottom pivot holeMasonry bit into hearth stoneAligned with top hole
Install postInsert pivots into holesMust swing freely
Test swingSwing arm full rangeNo binding, smooth motion
Load testHang maximum weightNo deflection, smooth swing

Reference Card

  1. The crane must swing freely (the entire purpose of the crane is to swing pots over the fire for cooking and away from the fire for serving; any binding or stiffness defeats this purpose). 2. Pivot points must be perfectly aligned (the top and bottom pivot holes must be vertically aligned; misalignment causes binding and uneven wear that eventually prevents the crane from swinging). 3. The trammel hook controls cooking temperature (raising the pot moves it away from the fire, lowering temperature; lowering the pot brings it closer, raising temperature; the trammel is the hearth cook's thermostat). 4. The arm must not flex under load (a full pot of stew weighs 20-40 pounds; if the arm flexes, the pot swings unpredictably and may spill into the fire; the arm must be rigid). 5. The crane transforms a fireplace into a kitchen (without a crane, cooking over a fire requires awkward reaching and dangerous lifting; the crane makes hearth cooking safe, efficient, and enjoyable). 6. S-hooks of different lengths provide quick height adjustment (while the trammel provides precise adjustment, a set of S-hooks in 2-inch increments allows quick pot changes without adjusting the trammel). 7. The complete hearth cooking system is the blacksmith's greatest domestic commission (crane, trammel, hooks, spit, andirons, and tools together represent a major project that showcases every forging skill). 8. Hearth cooking produces extraordinary food (the radiant heat of an open fire, the slow cooking on a crane, and the smoke flavor create dishes that no modern oven can replicate; the crane enables this ancient culinary art).
TransmissionCOMPLETE — unaltered & unabridged
Words917 — every one of them
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