The Siren Board

Attached are some articles from a siren built by Interstate Machine Products for Sterling Siren Fire Alarm of Rochester NY. Whether the patent for the Denver Siren was bought out or Sterling just designed a similar siren is t be determined. A few of the Duplex single head models have been found in the wild, but I don't think we've ever found a dual head quadruplex.

Are you sure that's not just a Y-10 with no shroud?

jacob585 wrote: ↑

Sun Jul 08, 2018 3:24 am

Are you sure that's not just a Y-10 with no shroud?

I think his well researched post makes him pretty dadgum sure. Go look at a photo of a Y-10. I think that will make you sure, too.

https://youtu.be/35xZYJhWKRE

A Y 10 is nothing more than an M style siren with a coding brake.

I think the actual rotor/stators on these are Denver products. Sterling may have sold them paired to motors as their own, or on behalf of Denver. Note the term "Quadruplex" on the advertisement. That is definitely a Denver term, not Sterling's.

Travis wrote: ↑

Sun Jul 08, 2018 8:16 pm

I think the actual rotor/stators on these are Denver products. Sterling may have sold them paired to motors as their own, or on behalf of Denver. Note the term "Quadruplex" on the advertisement. That is definitely a Denver term, not Sterling's.

See I'm almost wondering if it wasn't a new design for the Denver that was sold to Interstate Machine by Dillon Box Iron Works inorder eliminate sirens from their product line.

Then you throw this monstrosity into the mix, and it gets even more confusing

Could that possibly be a prototype Quadruplex, just adding on shrouds simmilar to that of a Sterlng M??

Chicagosiren-hunters wrote: ↑

Mon Jul 09, 2018 2:25 am

Could that possibly be a prototype Quadruplex, just adding on shrouds simmilar to that of a Sterlng M??

Or possibly a prototype to the M series