These are what I have around here for stamped steel stems.
I've seen the first one also marked Wald No 4 on the quill. This one has only Pat. No. D-204182 on the side
The middle one, the 314, is what I saw recently on a Typhoon, serial number (AJ314388), a green 26" Typhoon with chrome fenders, chrome S7 rims, and a Mag type front sprocket.
The other one I saw was a Gold 26" Typhoon with a four hole sprocket, chrome rims, fenders, and the serial number FA210100.
Both had Wald 314 stems, matching sparkle Schwinn grips, matching S saddles, etc.
The Wald 314 is what I'm used to seeing on Huffy and old AMF bikes from the 70's, not Schwinns. This one is dated 1977.
The 3144 stem is newer, dated 1982.
The smooth stem, does not say Made in USA, it only has the Pat. No. on it.
The same stem is sold today as a the
Wald #4.
My guess is that the smooth version was the beginning of offshore production for Wald.
Compared to the 314, the #4 stem is heavier, with thicker steel throughout but with a more open throat area.
The steel is likely thicker to make up for the open design. This one has a random '4' stamped on the side, it may be for the model #4, or be a date code.
I thought about going back to get the one Typhoon, but it needed too much work. The paint was rough, and both rims were badly rusted, plus it both tires were all but splitting open from age.
The cost of finding a good pair of S7 rims and then the cost of a pair of new tires would no doubt exceed the value of one of those bikes here. I've listed some decent looking Typhoons and have never been able to get more than $100 for really pristine versions here. I get more replies when I list a Huffy or Walmart Schwinn than I do for any quality Chicago bike.
View attachment 1595755
This is what I'm used to seeing on nearly all adult upright bikes like the Typhoon, Heavy Duti, Fleet, American, Corvette, Speedster, Racer, Traveler, Breeze, Hollywood, and every other adult Schwinn bike I've had that didn't have drop bars on it.
I have seen a few alloy stems but never on bikes, they all came to me via old shop cleanouts. All of the Continentals and Varsity models I've had came with forged drop type stems.
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Typical Schwinn Forged Stems. I've also seen these same Ashtabula stems on other
brand bikes from the 50's and 60's.