An exceptional late 18th to early 19th-century hand-forged wrought iron four-wick open grease/fat lamp (often referred to in early American lighting references as a square or four-way Crusie lamp).

This substantial sized primitive lighting device features a square forged iron reservoir pan with four turned-up corner wick troughs/spouts, allowing up to four individual wicks soaked in animal fat, tallow, or lard to burn simultaneously for heightened illumination. Rising from the rear edge of the reservoir is a broad, hand-hammered vertical upright strap handle attached via two prominent, hand-hammered rosehead iron rivets.

The top arch of the strap extends into a rolled/curled finial hood with a central pierced eyelet. Passing through the top eyelet is a heavy hand-hammered iron swivel loop that holds a twisted iron suspension shaft terminating in a hanging hook.

Dimensions & Physical Specifications:

• Height: Approx. 7 inches (lamp frame only, excluding hanging hook and chain)

• Width: Approx. 4 inches from wick spout corner to opposite wick spout corner

• Weight: 8.4 ounces (approx. 238 grams)

• Form: Square four-spout open pan fat lamp with arched strap support

• Hardware & Joining: Hand-hammered dual rosehead rivets; hand-twisted square-stock hanging rod and wick pick.

Origin & Age

• Origin: Early American Colonial (Pennsylvania Dutch / Mid-Atlantic / New England hearth origin) or Western European (Continental / Germanic tradition).

• Age: Late 18th Century to Early 19th Century (c. 1770–1820).

Material

Hand-hammered and forged wrought iron throughout (sheet and bar stock).

Condition

Very Good Antique Condition. Completely original and structurally intact with no breaks, modern welds, or repairs. The metal surface exhibits authentic hand-forge texture, fine surface pitting, oxidation, and a rich, uncleaned, untouched dark brown-to-auburn antique patina. The attached twisted hanging hook are fully intact.

Authenticity Assessment

This lamp displays key physical markers that verify authentic late 18th to early 19th-century blacksmith manufacturing:

1. Poured/Hammered Riveting: The vertical upright strap is secured to the square reservoir pan using two hand-hammered, irregular rosehead iron rivets with flattened, hand-stenciled heads and visible forge deformation on the reverse side.

2. Twisted Iron Construction: Both the hanging rod/hook and the original wick pick are crafted from hand-drawn square-stock iron that was twist-forged while red hot, exhibiting minor variations in turn tighteness and width along the twist.

3. Corner Spout Hammering: The turned-up corner wick troughs show explicit signs of hand-hammered flaring with slight asymmetry between spouts, rather than uniform machine stamping or modern reproduction casting seams.

4. Patina & Metal Grain: The surface features genuine atmospheric oxidation and fine linear slag grain visible within the wrought iron, characteristic of hand-puddled 18th-century iron stock.

Reference

• Book Title: Colonial Lighting

• Author: Arthur H. Hayward

• Reference: Dover Publications Edition, Chapter II: "The Fat Lamps – Crusies and Bettys," pp. 12–18 (illustrating early open wrought iron single and multi-spout crusies with twisted iron swivel hooks and wick picks).

• Secondary Reference: George C. Neumann, Early American Antique Country Furnishings, pp. 54–57 (cataloging early open pan wrought iron grease and fat lamps).

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