Jelly-Strength Tester

Invented in 1932 by C.R. Fellers and J.A. Clague of Massachusetts State College. It's technical name is the Fellers-Clague Penetrometer.

As is explained in The Complete Book on Gums and Stabilizers for Food Industry, there are two ways of testing the strength of jelly: 1) "tests in which the elastic limits (breaking strength) of the jellies are exceeded and the jelly is ruptured", or 2) "tests measuring deformation (sag) of jellies without exceeding the elastic limit."

The Fellers-Clague Penetrometer is of the first type.

Latrobe Bulletin - July 13, 1932




Source: Industrial and Engineering Chemistry, Analytical Edition

     Posted By: Alex - Sat Mar 02, 2019
     Category: Food | Inventions | 1930s





Comments
Of course, one could just as easily throw it against a wall and see how long it sticks there before sliding to the floor. Similar to the afternoon my wife expressed her disdain when I informed her I was going to yet another university used book sale! I was mesmerized by the neon blue jelly as it slide down the white wall to the cream coloured kitchen tiles!

agent j
Posted by agent j on 03/02/19 at 09:38 AM
The question is what specific 'classification of jelly is intended. Having dealt with people from several different english speaking countries, I've learned that jelly not only means a jam-like spread, but can also describe jello-type substance, and also things like gummy bears. And it is only in the latter two that I imagine these kinds of tests might be useful.
Posted by Tiona Daughtry on 03/02/19 at 10:30 AM
To clarify, she threw a bowl of jello brand jelly at the wall. What category does that substance fit into? Sidebar: had she thrown gummy bears at the wall we would be negotiating a divorce very shortly after that event.

agent j
Posted by agent j on 03/03/19 at 10:26 AM
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