Ulysse Valentin - Originele technische tekening – “Carburateur Longuemare” - Ulysse Valentin c1920
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Original hand drawn technical teaching plate by Ulysse Valentin, depicting the Longuemare carburetor in ink and color, ca. 1920, a rare Belgian educational artefact with authentic stamps and signature.
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Description from the seller
Original technical drawing – 'Carburateur Longuemare' – circa 1920 – Ulysse Valentin, Professional School of Mechanics (Huy, Belgium)
Exceptional and rare original hand-drawn technical diagram in East Indian ink and color, depicting a cross-section of a Longuemare carburetor — an influential French design from the early 20th century, widely used in early automobiles and motorcycles.
The drawing shows in a precisely detailed cross-section.
the float chamber (Essence)
the air and gas circuit (hot air, exhaust gases)
the sprayer section with a control needle
and the central mixing system that combines air and fuel for combustion.
The technical precision and manual coloring with pencil and watercolor make this plate not only educational but also aesthetically particularly attractive.
Coming from Ulysse Valentin, a graduate mechanic and electrician – Professor of automotive mechanics – Head of department at Marchin-Huy (Belgium), whose stamp and signature are clearly visible at the bottom right.
De Longuemare carburetors were widely used around 1910–1930 in French and Belgian vehicles, including De Dion-Bouton, Chenard & Walcker, and Peugeot.
Title: Longuemare Carburetor
Period: approx. 1920
Origin: École Professionnelle de Mécanique – Huy (Belgium)
Author: Ulysse Valentin, Professor of Automotive Mechanics
Technique: East Indian ink and manual coloring on drawing cardboard.
Dimensions: approximately 70 × 50 cm
Stamps: 'Professional School of Mechanics – Automotive Section – U. Valentin, Teacher' (3x)
Signature: U. Valentin (bottom right)
Numbering: “N° 3½” red stamped.
Condition: very good for the age – a few light age spots and edge traces.
Details
Original technical label, circa 1920.
Topic: Longuemare carburetor – used in early automobiles
Hand-drawn and colored – educational and decorative
Rare piece of Belgian industrial heritage
Short biography of Ulysse Valentin
Ulysse Valentin (active from the early 20th century) was a professor of automotive engineering in Hoei and Marchin (Liège province, Belgium). He trained young technicians and driver-mechanics during a time when the automobile was still in full development. Valentin was known for his didactic approach, producing large and precise diagrams that helped students understand the workings of engines and vehicles.
His education reflects the transition from horse-drawn carriages to cars. The signatures and stamps on his students' drawings and diplomas make these documents valuable testimonies of the early history of motorsport in Wallonia.
Original technical drawing – 'Carburateur Longuemare' – circa 1920 – Ulysse Valentin, Professional School of Mechanics (Huy, Belgium)
Exceptional and rare original hand-drawn technical diagram in East Indian ink and color, depicting a cross-section of a Longuemare carburetor — an influential French design from the early 20th century, widely used in early automobiles and motorcycles.
The drawing shows in a precisely detailed cross-section.
the float chamber (Essence)
the air and gas circuit (hot air, exhaust gases)
the sprayer section with a control needle
and the central mixing system that combines air and fuel for combustion.
The technical precision and manual coloring with pencil and watercolor make this plate not only educational but also aesthetically particularly attractive.
Coming from Ulysse Valentin, a graduate mechanic and electrician – Professor of automotive mechanics – Head of department at Marchin-Huy (Belgium), whose stamp and signature are clearly visible at the bottom right.
De Longuemare carburetors were widely used around 1910–1930 in French and Belgian vehicles, including De Dion-Bouton, Chenard & Walcker, and Peugeot.
Title: Longuemare Carburetor
Period: approx. 1920
Origin: École Professionnelle de Mécanique – Huy (Belgium)
Author: Ulysse Valentin, Professor of Automotive Mechanics
Technique: East Indian ink and manual coloring on drawing cardboard.
Dimensions: approximately 70 × 50 cm
Stamps: 'Professional School of Mechanics – Automotive Section – U. Valentin, Teacher' (3x)
Signature: U. Valentin (bottom right)
Numbering: “N° 3½” red stamped.
Condition: very good for the age – a few light age spots and edge traces.
Details
Original technical label, circa 1920.
Topic: Longuemare carburetor – used in early automobiles
Hand-drawn and colored – educational and decorative
Rare piece of Belgian industrial heritage
Short biography of Ulysse Valentin
Ulysse Valentin (active from the early 20th century) was a professor of automotive engineering in Hoei and Marchin (Liège province, Belgium). He trained young technicians and driver-mechanics during a time when the automobile was still in full development. Valentin was known for his didactic approach, producing large and precise diagrams that helped students understand the workings of engines and vehicles.
His education reflects the transition from horse-drawn carriages to cars. The signatures and stamps on his students' drawings and diplomas make these documents valuable testimonies of the early history of motorsport in Wallonia.
Details
Artist
Ulysse Valentin
Sold by
Owner or reseller
Edition
Original
Title of artwork
Originele technische tekening – “Carburateur Longuemare” - Ulysse Valentin c1920
Technique
Ink
Signature
Hand signed
Country of Origin
Belgium
Condition
Good condition
Height
70 cm
Width
50 cm
Period
1910-1920
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