I enjoy learning about companies and their History and although the following pair of Gas & Burner pliers are indeed vintage and made by the well known company of Utica, I thought perhaps some of the GJ members might like to get a better understanding of what they are use for.
Even though Utica made my two examples and you can read all about their History on the AA web-site, you must keep in mind two things (1) Other companies made them and (2) you can still buy them brand new today; They have stood the test of time so to speak.
Over these many years on the GJ someone will show a picture of these pliers that they picked up in a junk tool box sale and ask the question..."What are these strange pliers"?
So to answer that question Gas & Burner pliers were popular among plumbers for light duty work, they could get into tight spaces when working on burners and gas pipe fittings.
I will give you a few links along with some pictures of the two pliers that I own, so next time you find these odd pliers you too will know what they are used for.
http://www.imagesupplyservice.com/item104678.ctlg
http://datamp.org/patents/displayPatent.php?id=31803
http://www.cementexusa.com/pdf/GasPliers.pdf
http://stoves-parts-tools.info/products/gas-burner-pliers
http://home.comcast.net/~alloy-artifacts/utica-tool.html#gas-burner