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Boltless Builder

Boltless Builder was a construction system which used dimples to hold parts together. It was made in the USA under the Meccano name by A.C. Gilbert in 1937. Not certain if it was actually put on official sale although a few examples are known.

Manufacturer / Distributor

A.C Gilbert Co., New Haven, Connecticut, USA

Info from the Metal Constructional Systems Database for BOLTLESS BUILDER (Ref:BBR)

System Type
Non-Meccano type
Boss Type
no boss
Boss Thread
Diametrical Pitch of Gears
No. of Parts in System
Hole Pitch (Spacing) (mm)
Diameter of holes in Strips(mm)
Diameter of the Bore in Bosses(mm)
Diameter of Axle Rods(mm)
Types of Nuts and Bolts
Material/Finish of Nuts and Bolts
Size of the Nuts across Flats (mm)
Bolt diameter (mm)

A Gilbert set sold under the MECCANO name. Parts held together by dimples into holes. Several examples of one set exist but it was probably a prototype which was never produced.

Pages from the 'Other Systems Newsletter' which contain information on this system are shown below. They can also be downloaded to your computer if desired here

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