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jasoncrawford's profile
Jason Crawford
Jason Crawford
Jason Crawford
@jasoncrawford

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Jason Crawford

@jasoncrawford

I write about the history of technology & industry at @rootsofprogress. Previously: co-founder & CEO, @fieldbookapp; engineering manager at Flexport and Amazon

San Francisco, CA
jasoncrawford.org
Joined April 2007

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    Jason Crawford‏ @jasoncrawford 26 Dec 2019
    • Report Tweet

    Canning of food began as early as 1812 The can opener was not invented until 1855 In between, cans were opened with hammer & chisel (!)pic.twitter.com/kteOTA3g6o

    11:04 AM - 26 Dec 2019
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    • Yuriy Markov Robert Mariela Bayo O Max Grev Epiphany1 Bottlenecked_Y Erik Hal Wayland
    21 replies 83 retweets 282 likes
      1. New conversation
      2. Diane Loyd‏ @DianeLoyd5 26 Dec 2019
        • Report Tweet
        Replying to @jasoncrawford @Cernovich

        What about the Mason jar type of canning?

        1 reply 0 retweets 2 likes
      3. Jason Crawford‏ @jasoncrawford 26 Dec 2019
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        Replying to @DianeLoyd5 @Cernovich

        Mason jar not invented until 1858

        0 replies 0 retweets 1 like
      4. End of conversation
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      2. C Cawley‏ @HardLineDemocat 26 Dec 2019
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        Replying to @jasoncrawford @Cernovich

        No. There was a strange blade on an iron handle with a notch. You stabbed the tin and then levered the blade along tearing the tin along the edge of the top. They were in use when I was small in the early 60s. Nothing strange. It worked quite well but left jagged sharp metal.

        1 reply 0 retweets 1 like
      3. Jason Crawford‏ @jasoncrawford 26 Dec 2019
        • Report Tweet
        Replying to @HardLineDemocat @Cernovich

        They had this in the early 1800s?

        1 reply 0 retweets 1 like
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      2. Fred Enders‏ @enders_fred 26 Dec 2019
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        Replying to @jasoncrawford @_YvonneBurton

        They could have just axed for one.

        1 reply 0 retweets 6 likes
      3. Mark Jones‏ @the1markjones 26 Dec 2019
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        Replying to @enders_fred @jasoncrawford @_YvonneBurton

        ^the only acceptable time to use "axe" instead of "ask". Bravo 👏🏽

        0 replies 0 retweets 1 like
      4. End of conversation
      1. Richard Harper‏ @harpersnotes 26 Dec 2019
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        Replying to @jasoncrawford

        Pocket knives used to have a short hook blade for opening up cans. I used it many times, very effective. Much simpler than a modern can opener. Now I'm wondering how far back in time those blades go. https://www.youtube.com/watch?v=m8jXwvlu1qM … ..

        0 replies 1 retweet 1 like
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      1. David Pinsen‏ @dpinsen 26 Dec 2019
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        Replying to @jasoncrawford @ModeledBehavior

        And yet economists always assume a can opener.

        0 replies 0 retweets 4 likes
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      1. Nicht wichtig‏ @BlueNicht 26 Dec 2019
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        Replying to @jasoncrawford @leebryant

        Bc the impetus behind canning was military - Napeolon offered a reward, to feed his armies during march. Soldiers had bayonets to open tin cans. Only when they saw the domestic market of housewifes, was better opening method important.

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      1. Edward Nevraumont‏ @Ednever 26 Dec 2019
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        Replying to @jasoncrawford

        My understanding is that canned goods were pretty unusual before the civil war. It was the war where soldiers developed a taste for them and took them back home. Also: pretty inconsistent and unsafe until Underwood’s Devillsd Ham crested the first successful brand (>1860s)

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