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Part 113: Girder Frame

113	Girder Frame	1919	1978	0	0	0		4 in outfit 7 from 1922-28

The parts

The girder frame is one of the most elegant of Meccano parts, but one of the least expected.  It doesn't match the half-inch width of any other Meccano part introduced until the narrow strips finally arrived in 1962.

Girder frames are absent from the "New Meccano Parts" leaflet of September 1919 (printed in October), but are shown in the Meccano parts listing of December 1919.  We have to be careful with these dates, however – the new parts announcements are notoriously out of date and we have to wait until the March 1921 issue of the Meccano Magazine for the girder frame to be announced along with other "New Meccano Parts".

The girder frame's most common appearance in Meccano is in the feet of the Giant Block-Setting Crane, Supermodel number 4.  However, it was originally conceived as a component to be used repeatedly to form something like a braced girder, as can be seen from the drawing at the top of this extract from the patent application in 1920.

The top diagram, and the side view shown top-right, also explain the stepped nature of the girder frame, intended to allow this composite girder to remain in a single plane when assembled.  A photograph of three girder frames placed together in this arrangement is shown below.

The diagrams further down show all sorts of variations on the original girder frame design, none of which were put into production. 

The girder frame appeared in the 1919 "Inventor's Accessory Outfit B", and subsequently four were included in the largest outfit 7 from its introduction in 1922.  They were dropped, however, from this outfit after 1928.  This coincides with its first appearance in the Supermodel 4 leaflet, which perhaps would have maintained its sales as a spare part.  The use of the girder frame in Supermodel 4 is certainly the reason for the continued strong demand for this part to this day.

Although it never appeared in a Meccano Outfit again, the girder frame remained as a spare part right through to at least 1978.  Tim Edwards' parts lists show it as being discontinued in that year, although a very small number are known in dark blue.  This is not a common colour, though. The post-Binns Road listing of 1982 still lists part 113, so it seems possible it was not discontinued, but spare parts were notoriously difficult to find in dark blue.

Chronological variations

Introduced in 1919, this part went through the usual finishes from nickel through to dark blue that would be expected of any Meccano strip-like part.  No changes appear to have been made to the part in that time.

Variations and oddities

Just the one oddity here – an example from John Bader of a nickel plated girder frame completely flat (without the steps in it).  The only one we've seen, this is most likely a manufacturing mistake.

Dealer spare parts boxes

The above image is of three girder frames in a spare parts box, dating from the light green period (1958-64) as shown by the light green label.  The mid-50's box is the same, but with a yellow rather than green label.  Note that the box is considerably longer than it needs to be (long enough to fit a 7½'' strip), and that they are inexplicably packed in threes! Perhaps this is a cunning plan to force a dealer to buy two packs when the customer wants four parts?

Individual part numbers

Part numbers for the parts on this page are as follows:    Unique part numbers
For identification, each variation has been given a suffix to the main Meccano part number. These suffixes consist of a two-character code for the colour, and if there are many variations, a further number and sometimes letter code to identify each variation. See the bottom of the 'Parts' page for further details.

You don't need to worry what the codes are, just click on any one for a photograph.

The button above turns on and off the display of DMS numbers (where they are known). The DMS (Development of the Meccano System, Hauton and Hindemarsh) published in 1972 and added to in 75 and 82, suggested part numbers for every variation of every Meccano part. These numbers aren't perfect, but they are recognised and also referenced in the EMP (Encyclopedia of Meccano Parts, Don Blakeborough).

Description	from	113
Nickel plated	19	.ni
Dark green	27	.dg
Medium green (pre-war)	33	.mg1
Gold painted	34	.go
Medium green	50	.mg
Light green	58	.lg
Silver painted	64	.si
Zinc plated	66	.zn
Dark blue	78	.db
		ALL

Please send us pictures of missing parts! Hints and tips for pictures
Take a picture of the part in very good light, preferably on a plain yellow background, without a flash but with a tripod.
Ideally, trim the picture to about 150 pixels per inch of the Meccano part (unless the part is particularly big or small), save it as a reasonably good quality jpg file with a filename of exactly the part number, for example 19b.ni1.jpg, and email it to us by clicking on 'Contact us' at the top of the page. Thanks!

• A greyed-out box shows that no part exists for that colour combination.
• Part number codes with a green background have an attached picture of the part, just click once on the code to show a photograph of that part in a separate window.
• Parts marked "†" were temporary or economy parts, or existed only within specific themed outfits. The previous part continued throughout or afterwards.

Further information

John Ozyer-Key      (at 1:14pm, Mon 5th Oct, 09)

I have 7 dark blue girder frames, including one in its original binns road packaging.

Rob Pembroke      (at 12:48am, Thu 21st May, 09)

Hi Charles. I have a flat girder the same as John Baders but in mid green stamped, "MECCANO MADE IN ENGLAND". Will send a picture if you wish. Cheers Rob. Reply: Yes of course!

P. Matthews. (Meccano Museum)      (at 1:09am, Mon 21st Jul, 08)

We have 8 part number 113 Girder Frame in Dark Blue Reply: Hi Peter, thanks for the message! I received a picture from Richard, who also has eight. I think if you two only have eight each they count as pretty rare, as no-one else has reported having one as yet!

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