Answer: What could go wrong? Fighting fires in the 19th century

Quick answers: 

     1.  What were these  devices commonly called?

     A:  Hand grenades, or hand grenade fire extinguishers. 

     2.  What problematic fluid were they often filled with?

     A: Some were filled with salt water (salt added to prevent freezing);
          but most were filled with carbon tetrachloride, which is very poisonous
          and can be transformed into phosgene gas in the presence of high heat…
          ...which frequently happens in fires. 

     3.  Can you find the original patent for this device?

     A:  US11781 – Samuel Johnson, Aug 8, 1871 (filled with carbonic acid or chlorine gas!)

           Soon after, John J. Harden, US282981, Aug 14, 1883 (filled with carbonic acid
           or sodium bicarbonate).  This version became most popular in the US.  

Background:  In the 19th century, fires were a big deal.  They were much more common than now, with buildings and interiors being made mostly of flammable substances and fire-fighting technology being much less capable than it is today. 

Inventors started building any number of clever, and occasionally Rube Goldberg-ian fire-fighting devices, of which the fragile, fluid-filled globes known as “hand grenades” were possibly the most common at the time. 

I first ran across this notion when I was reading through an old address directory for 1895 and found an ad for “hand grenades.”  That surprised me a bit, so I started looking into the topic.  What I found was this amazing bit of tech from the 1800’s. 

Fire grenades were sold as essential household items, and the advertisements played up their ease-of-use (especially by women in peril, a common thread at the time). 

If you look up the patents, you’ll find an amazing technology battle as inventors tried to create ever better grenades, sometimes with remarkably bad idea.  For instance, Van Houten patented a fascinating device (US366901) that uses a burnable string causing the bottle to pivot and spill the fire extinguishing agent out on the fire below.  BUT if the stopper gets stuck, it also has a small glass bottle of gunpowder to be set afire by another burning string and that will shatter the bottle.

My search process:

[ fire fighting shatter 1800..1900 ]  to find:  They’re called fire fighting grenades.  Since I knew they existing in the 19th century, I used the number operator (1800..1900) to find dates associated with the web pages from that era. 

[ fire fighting grenades fluid ] to find: That they were often filled with carbon tetrachloride.  Okay, got that.  Why is it problematic?  Is there some hazard associated with carbon tet? 

[ carbon tetrachloride hazard ] to find: That carbon tet,  when breathed, can damage the lungs and kidneys.  What’s more, it’s easily converted in the presence of heat to phosgene gas, a major chemical weapon used in World War I.  Obviously not something you’d want to use in an enclosed space, such as a fire in the home. 

Search lessons:  Let’s look at some of what people did as their first queries…  There were a few natural buckets of initial queries.  I've grouped the initial queries by their most prominent features.  (And note that one person used the intext: operator!)  

Globe:

fire globe home fire extinguisher  

fire extinguisher 19th century intext:globe

fire fight globe glass 

glass globe fire extinguisher 

fire globes nineteenth century 

glass globe fight fire history 

antique fire extinguisher globe

19th century:

19th century glass globes home to fight fires 

19th century fire prevention home 

19th century fire-fighting devices glass globe 

19th century fire extinguisher 

19th Century Glass fire fighting 

19th century fire-fighting devices  

19th century Fight fire home devices 

fire extinguisher 19th century intext:globe

Historical:

Fire Extinguisher history 

"fire extinguisher" home globe 1800..1900 

antique liquid filled glass balls  
 

Unusual:

glass vial to extinguish fire 

home fire-fighting glass shatter base of fire
 

Didn’t work as initial queries:

19th century fire globe 

19th century fire-fighting devices 

fire bomb glass ball

There were three different approaches to this challenge.

1.  Globe:  7 of the initial queries had the word “globe” in the query.  You picked this up from the language I used in the challenge (which is fine)… but note that it’s a fairly uncommon word.  If I were devious, I might have used that word to throw you off the path.  As it was, I planned it as a hint. 

2.  19th century:  8 of the initial queries had “19th century” in the query.  That’s not a bad way to build the query, but if it hadn’t worked, you’d be right to take it out of your query and try it without that specifier.  A time period can be overly limiting your query.  For example, suppose these things had been popular in the 17th century as well… then nobody would have written about them in conjunction with the phrase “19th century” and you would have wasted a lot of time.

3.  Historical:  3 people had initial queries that were fairly broad, looking for the history of firefighting or antiques.  That’s not a bad approach (and the person who used the number range operator, 1800..1900, echoed what I did myself). 

Finally, it’s interesting to see the 3 initial queries that did NOT work well for their searchers.  Everyone was able to do the challenge, but compare these unsuccessful initial queries with those that worked.  As you can see, the difference is often just adding a word or two.  Since it’s so fast to iterate, these searchers were right to extend their queries to include the missing word or two that got them to fire grenades. 

For extra credit, many searchers found truly wonderful images, many of which I have linked in here below.   (I especially like the French advertisement for the Harden hand grenade.  Beautiful.)  

Search on.  (But safely!)  

From: Illustrated Sporting and Dramatic News volume 2, September 1885