Here’s the “F” - also advertised as “Big Boy” – set, “for trucks, tractors, and heavy machinery”.
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The backstory on this one is simple: for research purposes, I just couldn’t stand the thought of the BIN set on eBay a few weeks back going to someone who would bury it or not share the information here. It’s the first “F” set I have ever seen anywhere. Cost me a lot more than I am accustomed to paying for tools at flea markets, but worth every penny.
Here again is one of four.cycle’s ads (this one from 1927) as a reference.
Other than the ratchet in the “D” set (made for Bethlehem by Bonney, Herbrand, and at least one other tool & forge company), this “F” set is the only set Bethlehem sold that had handles branded with the company name. None of the pieces in the “A” and “C” sets are branded or marked in any way.
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The 8-inch Extension, 16-inch Extension, and 18-inch Sliding Tee spec out exactly as the ads say. The Sliding Tee is a beast and very well-made. The female drive ends on the extensions are basically sockets with 11/16" hex openings on either end press-fit (not forged or welded) onto the 11/16” hex bar stock. They have retained hardly any of the copper oxide finish, but there are enough spots to confirm that they were indeed originally coated with it.
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Everything – with one strange exception, which I’ll get to below, is 11/16-inch drive.
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Here are the sockets.
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Note that there are twelve (12) in this set, whereas the 1927 ad states nine (9). I’m guessing this set is a later production year, since there is no doubt that they’re all Bethlehem. What’s interesting is they all won’t fit in a row in the carry box. I am nesting the two smallest sockets inside the two largest. I don’t know if they came like that, but if they used the same box, it’s the only way they’ll fit snugly without just throwing them in on top of the handles.
The service openings are 1-1/2, 1-7/16, 1-3/8, 1-1/4, 1-1/8, 1-1/16, 1, 31/32, 15/16, and 7/8, 13/16, and 3/4 hex. Those last three are the sockets that are not listed in the set in the ad, which stops at 15/16.
It’s very hard to distinguish with the naked eye, but the hex drive opening in the socket with the 1-7/16” service hex opening (second from left) is actually milled at 9/16” diameter instead of 11/16”. As such, it’s useless. None of the handles will fit it. It was obviously a factory mistake.
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Here’s an even closer look at the sockets. The majority have little to no copper oxide remaining, and you can see how it's literally peeling on those that do have some. I have to avoid handing them or risk losing it all.
Interestingly, they use a slash to denote the fraction mark whereas the “D” set used a hyphen. I am speculating that it was either a different OEM or the same OEM and a different production year.
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The only other feature worth noting with this set is the lack of a lid. If you scroll up to the top of this post and look at the ad again, you’ll see that it did come with one. Unlike the other sets, it didn’t have hinges. It was removable. It’s shown resting on the ground with the tools. I’m guessing it was slightly larger and just overlapped the edges. I plan to make one out of sheet metal and paint it red, for consistency, and to keep dust out of the box.