Pulko is a wooden construction set, patented by Erich Pulkowski.
It’s sold by/via Carl Josef Bollig & Co, Lechenich in Germany, till 1923.

More information: mobaco.nl/Pulko

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Patented

DE319745, by Erich Pulkowski, prior art: March 1919.

Erich Pulkowski’s biography describes the relation between Erich Pulkowski and the Carl Josef Bollig.

Some pictures of a reconstructed Pulko patent version:

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Transition to producable version

It’s nice to see, how the system in the patent evolves into the final product. For example, the final base plates have closed holes, which are not mentioned in the patent. Also the ‘Bauhaus style’ windows and doors, are changed to more easy to produce parts. Most characteristic parts, are the horizontal floor strips (nr.3 in the patent). They look very similar like the France L’Edifice version, which was patented just 2 years before. But both Pulko & L’Edifice did change the design for these parts completely.

Column developments, according to the pictures and parts found:

1. Square columns, with on two side chamfered tips. (See patent.)
2. Retangular column with rounded edges, not additional tip shapes. (Left 2 column in picture blow)
3. Wooden rods with grooves (fits baseplates very well) and 4 chamfered sides on top. (Right column in picture below.)

The order of column development is unknown to me.

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Box cover, manual cover & buidlings

There are different boxes:

• Box 1: Addo
• Box 1a: AdBal 
• Box 2: Baldo
• Box 2a: Balcar
• Box 3: Caro

So far only Addo, Adbal and Baldo have been found. The bridge parts (“Torbogen”) on the manual cover and 3 stories buildings could be build with box nr. 3 (Caro). See here a German example inside the Baldo manual:

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Some system characteristics

Here a short list of some system characteristics and how it’s retrofitted into the virtual LeoCAD library:

Part types:	Original:	Virtual:
Base plates	Wood – spruce wood 15 [mm] thickness	Textured pieces
Columns	Wood – beech wood Round ~11-12 [mm]	Textured pieces
All panel elements	Wood – beech wood 3.5-4.0 [mm] thickness	Textured pieces
Bay size	60 [mm]	(tbd)
Standard wall panel	52.5 x 100 [mm]	(tbd)

Library information

Here you see an overview of parts in the library:

The Pulko category consists of these part types:

Part groups:	Numer of parts:
Base plates	2
Columns	3
Horizontal pannels	7
Vertical strips & pannels	16
Total parts:	28

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Playing with LeoCad

Well, I’m not able to play with this one. Mobaco seems to be a more successful copycat, which is fun to play with.

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Re-makes

On the left side, the Pulko Patent is shown. On the right side, the final ‘produced’ panels. The left bridge is coming from the never sold box “Carlo” and used in ‘The Bridge’. The right ‘bridge’ is part of a much bigger “prototype” bridge, which might have been used while developing the successor Mobaco. If you know more about the transistion between Pulko & Mobaco, please let us know!

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