Bob(1)

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Bob(1) Construction Sets

Bob(1) was a construction system using rods and plates and was made in the UK. Very similar systems were also made in France (Bob(2)) and Switzerland (Bob(3)), with each country having a slightly different system. It was produced in the UK from around 1946 to 1949.

Manufacturer / Distributor

Ridingbery and Co. Ltd., Feeder Road, Bristol 2, UK
Distributed by G. Greiner & Co., 23 City Road, London, E.C., UK

Info from the Metal Constructional Systems Database for BOB [1] (Ref:BOB1)

Maker

System Type
Mainly Rods/Tubes

Country
United Kingdom

Dates
1945 to after 1960

Material
Steel / Aluminium (Alloy)

Thread
M3

Boss Type
double-tapped

Boss Thread
M3

Diametrical Pitch of Gears
--

No. of Parts in System
46

Hole Pitch (Spacing) (mm)
12.7 (multiples of value shown, including half.)

Diameter of holes in Strips(mm)
3.1

Diameter of the Bore in Bosses(mm)
3.1

Diameter of Axle Rods(mm)
3.0

Types of Nuts and Bolts
Nuts: --
Bolts: cheese (slotted)
(see comment *¹)

Material/Finish of Nuts and Bolts
Brass with a Brass finish
(see comment *²)

Size of the Nuts across Flats (mm)
---

Bolt diameter (mm)
4.9

Comments
Steel Rods, aluminium Pulleys & Plates. Joints marked PATENT & G.Ni.K. Much like BOB2 & BOB3 except plating. *¹*² In Joint; in boss: Roundhead plain brass, Bolt Head Diameter=5.6.

The MCS document for this system is shown below. It can also be downloaded to your computer if desired here

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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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The report can be zoomed into, made full screen or downloaded as a pdf document by using the controls provided

Below there are manuals/leaflets which can be downloaded by clicking on the appropriate image.

A Bob(1) instruction manual.
(02/03/2021)

Photos of a Bob(1) set.
(02/03/2021)