Open ended wrenches supplied with 1940's machines

[gauntjoh]

I've been trying to collect a full tool kit for each of my 1940's machines.
In the parts lists the open ended wrenches are numbered:

5B780 Wrench - 5/16 & 3/8 OPENING
5B781 Wrench - 7/16 & 1/2 OPENING
5B782 Wrench - 9/16 & 5/8 OPENING
5B783 Wrench - 11/16 & 3/4 OPENING
5B784 Wrench - 13/16 & 7/8 OPENING
5B785 Wrench - 15/16 & 1 OPENING
5B786 Wrench - 1 1/16 & 1 1/8 OPENING
5B787 Wrench - 1 1/4 & 1 5/16 OPENING
5B789 Wrench - 1 1/2 & 1 5/8 OPENING

Note there is a gap between 5B787 and 5B789 !

I have never seen and example of, or seen a parts book listing a 5B788 wrench

Could anyone tell me if 5B788 does relate to an open ended wrench, and if so what size, or if the number was used for another part.

Thanks.

[Old Magnet]

Hi John,
Looked up your numbers in the Cat data base.
5B0787 shows as a wrench.
5B0789 is a wrench that interchanges with a 1B6417
5B0788 comes up as a "no match" number.

Doesn't give any info as to description.

[gauntjoh]

Hi John,
Looked up your numbers in the Cat data base.
5B0787 shows as a wrench.
5B0789 is a wrench that interchanges with a 1B6417
5B0788 comes up as a "no match" number.

Doesn't give any info as to description.

Thanks Old Magnet,
It looks like 5B0788 was not a wrench then, and maybe it is a part number that was never used (hence "no match") ?

[Old Magnet]

Yes, I would conclude that the number was not used.