Recent Tests Show HiSh Quality of Hipolito Screens

It has often been saicl that )-or1 can't impror-e ttp,tn Nature. but receut tests relative to the strength in the cortters of u'inclou' screens ancl screen doors made b,r. the Hipolito Companl' of Los Angeles, one of the largest screen rnanufacturers in the u'est, tend to prove there are excepiions to the rule.

These tests, conducted by the Raymond G. Osbolne L;rl-'roratories for the big Los Angeles cbncern, rvere excet:ciingly interesting from many viewpoints. They brought out some valuable information rvith regard to the high qrrelit;,' strer-rgth of these cortlers that brought forth the idea of the ingenious test that proved so successful. The thought originated rvith L. M. Rosenberg, president of the Hipolito Companv, rvhose progressive ideas have been an important factor in bringing the company to the position of leadership u'hich it now enjoys.

The tests to which the screens 'rvere subjected were ver_y l'rard-nruch harder than an ordinarl' screen would have.to stand under normal cor,<litions. A very heavy steel testing rnachine in the Osborne Laboratories rvas used to make the tests, an instrument ordinaril)' usecl to test the strength of concrete and steel and iron bars.

Taking one of their stock rvinclorv screens, offrcials of the company placed it in the testing machine in such a \\'ay that the stress rvas applied at diagonally opposite corners. Then the weight was released.

Witnesses from the Hipolito Company and the Osl.'orne I-aboratories expected the screen to rvithstand a iairly heavy strain, but the final results exceede<l even the ftrnrlest hopes of the company officials.

As the machine began to bear don'n upon the screen the indicator of the number of pounds being applied rose slowly to 100, 200, 300 pounds without anv indication of the screen giving out. At this point the officials of the company smiled contentedly. "Fine," they thought-"the rveight of two men is more than any screen has to stand.' sirc/ of the corncrs of Hipot;to of Hipolito Screens lvhich has formecl the basis for a striking series of advertiseurents. So far as is knorvn they are the first tests of such an exacting natllre that an-- scleclr manufacturer has ever applied to his product.

But the indicator kept right on going up to 400 pounds, then to 500-600-650 and still not a crack. Everyone held his breath as the stress increased. Finally at 60 pounds the wood itself shattered but the corners-1hs "qslners of strength" held. The manufactured corner was stronger than the natural wood. Examination of the screen when taken from the machine disclosed the fact that the frame had split along the grain of the wood for a short distance in from the corner.

The "corners of strength" in all Hipolito Screens has for some time been a strong selling feature and it was the desire to demonstrate in a striking manner the unnsual

Highly elated, the officials of the company tried another stock screen in the same machine and found that it withstood a pressure of 610 pounds. This indicated that the average breaking point was undoubtedly well over 600 pounds, a tremendous strain which no screen would have to bear under normal conditions.

When it came to the testing of the screen doors, naturally it rvas expected that the breaking point would be greater than that of the rvindow screen. But here again the results were even better than anticipated. It l'as found that a stock screen door held until the tremendous weight of 1340 pounds-more than half a ton-had been applied. As in

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