Improved Mode of Casting Pumps
On supporting science journalism
If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.
An improvement in pumps, by John H. Me-Gowen, of Cincinnati, Ohio, to which this invention forms a necessary appendage, has al-eady been noticed in the Scientific American. Vfr. McGowen has a mode of casting his pump, which renders it a much better article han those cast by the old process, and also enders the operation of casting much easier, n this operation the cores which form the in-erior chamber of the pump, are moulded up-n the top ot what is called the " knowl " or drag," in such a manner that they will ad-ere thereto, and thus keep all the cores in aeir proper vertical position while the metal s poured. By this arrangement pumps o lis description may be cast on either green r dry sa-,d with equal facility. The inven-or, Mr. McG., has taken measures to secure a latent.
It’s Time to Stand Up for Science
If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.
I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.
If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.
In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.
There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.
