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Part 59: Collar
|140y||Four-hole collar||1963||-||n/a||n/a||n/a||Originally from 1923|
and to the right, the 4-hole and aero collars
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The partsThe collar was the first part in the Meccano system to have a thread and set-screw. It is clearly shown in the parts listings of 1912 alongside a worm gear with a tongue key. Later parts listings in the same year show the worm gear with a boss and set screw. So although most parts gained set screws by the end of 1912, the collar had one earlier in the year.
To the right of the picture above is the four-hole collar (part 140y), originally introduced in 1923 as part of the universal coupling (and later the swivel bearing). In 1963 this part gained its own unique number when it was included in the Electrikit (and later 4EL) outfits. It was never supplied in the main numbered outfits.
To the extreme right is an example of the smaller "Aero collar", which is somtimes given the number 59a, although I understand that this part was in fact only ever referred to as part P52. Later, when we add the Aero and Car constructor parts to this site, we'll add the aero collar. It's easily identified as being considerably smaller than the standard collar, and is occasionally handy in tight spaces.
(the picture shows a standard set screw, although they were not part of the collar)
At the time, the Worm (part 32) had a smaller 6BA threaded boss and set screw, and outfits from 1912 can be found with all three types of bossed threads, as well as tongue keyed parts. From early in 1913 all parts were standardised with the usual 5/32W thread.
Ed Barclay proposes that the 5/32W thread could have originally been thought too large to tap bosses, and therefore 6BA was used initially (in the first part of 1912) in the worm. This set screw proved to be too fragile (examples can be found with the head missing, due to overtightening the set screw), and the thread could have been changed to 5BA until it was discovered that it was possible to use the standard Meccano thread. This would certainly explain the existence of 6BA worms and 5BA collars, and is plausible but entirely hypothetical.
From then on, the main variations that can be identified are from the stamping and tapping of the part. As usual with Meccano bosses, the collars were originally single-tapped and later double-tapped, sometime around 1927/1928. It is likely that these were changed fairly early on. Collars were quite common in outfits of the period (unlike in the post-war numbered outfits), with four supplied in outfit 3 and ten in outfit 4. The more common the part, generally the earlier the conversion to double-tapped bosses becomes visible. It is likely that this is because the part would have been manufactured more often than the very rare parts that can be found single-tapped several years later.
Some early Meccano collars are stamped Meccano, changing to Meccano Fabrique en Angleterre in the 20's, and then back to just "Meccano" after this period. There is sometimes a slight overlap between double-tapping and the demise of the MFEA stamping in some parts this has not yet been investigated for the collar. The font changes to a wider lettering, in common with other parts dating from the 30s. Post-war collars are not stamped.
In addition, through the 20s and 30s the collars became significantly rounded and slightly shorter. Post-war collars are more like the very first ones longer and with sharper edges.
Immediately pre-war (it is assumed), collars were made from a zinc alloy (Mazac?) because of the scarcity of brass. Good examples of these are quite rare, as they were brittle and collapsed easily.
Variations and oddities
It is very common to find 'rogue' collars in Meccano outfits. Particularly post-war, outfits were not supplied with anywhere near enough of them, and they were not cheap parts. It is very easy to mill down damaged bosses from other Meccano parts (especially the road wheels when they collapse), and this was often done to increase a builder's stock of collars. Pay careful attention to collars that have ends not perfectly parallel, or milling marks around the edge or on one face.
Dealer spare parts boxes
Individual part numbersPart 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).
|Single-tapped 5BA with set screw||12||.mm|
|Single-tapped 5/32W, sharp corners||12||.br1|
|Rounded, single-tapped, stamped MFEA||21||.br2|
|Double-tapped, very rounded||28||.br3|
|Double-tapped, end-stamped Meccano||37?||.br4|
|Post-war, unstamped, not rounded||46||.br||.br|
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- Parts marked "" were temporary or economy parts, or existed only within specific themed outfits. The previous part continued throughout or afterwards.
Dick Watson (at 12:17am, Tue 23rd Oct, 07)
Milling down bosses from defective wheels often results in collars with the threaded holes off centre because of the position of the hole in the boss. Many replicas are as good as or better than Binns Road ones. I get mine fron Formby (on the outskirts of Liverpool)