The Press., 1898-01-20
(Fhe Pittsburg Dispatch.) PRESSURE OF DEEP WATER

Lying on its side in Best, Fox & Co.'S | scrap yard, like giant that had met a su- perior foe in struggle to the death and gave up the ghost, is the Schon diving bell, | that was crushed by the pressure of the water in the depths of Lake Michigan. It arrived in Pittsburgh few days since and has been an object of curiosity and study to those who know it is here.
 As it lies now among other scrap the Schon diving-bell looks like square boil CT with slightly tapering ends, that had collapsed. Instead of torn metal bending outward, it is crushed in. Bronze metal an inch thick is torn as one would tear a straw board. In the same manner one of the plates in the angular end was ripped almost it's entire length
 The box was planned by Hubert Schon a brass moulder of this City. It is or may be called cube six feet in dimensions. The slightly tapering ends increase its height a few inches but not it's bulk. The material is pho sphor bronze five eights of an inch thick. Each plate was cast with a fiange, and they were bolted together, the bolts being placed as closely together as was consistent with strength. The side plates were further strengthened with ribs an inch thick and two inches wide. There was an opening for a lookout on each. Fitted in these openings were heavy bars, so heavy that openings only three inches square were provided, and back of them were glass plates an inch in thickness. Through these openings the explorer in the box could survey everything in sight and telephone to the operators on the surface above.
 The makers followed the directions of the inventors who had estimated that the press ure at the depth of 250 feet could not make an impression on the creature of his fancy and in course of time it was completed and loaded for shipment to Chicago. On the car it weighed B, ,000 pounds. Inserted in the bottom was a short steel shaft two inches in diameter. To this were to be attached weights to sink the box. The box was shipped to Chicago and preparations were made to test the machine off that city, but since the chart showed a maximum depth of seventy feet, Milwaukee was chosen.
 In the Beer City prepar ttions for testing the Schon bell were completed by Mir Lutz Schon and Samuel Harper. MT. Lutz's rep resentative Floating and towing equip ments were secured and a preliminary test was decided upon. The scientists of the city said that one could not remain under water in that space longer than fifty to six ty minutes. They figured that 216 cubic feet of air would be consumed in that time but Shon when he went down in it for a test stayed three hours, smoked and burn ed matches watched sewage of the city float past him and then only came up be- cause lie was tired of staying down.
 With this point settled. the more impor. tant one whether or not the vessel could the concern of the friends of the box They estimated that at depth of 200 feet each side of the box would be subjec ted to pressure of 53O,OOO pounds. The actual pressure at that depth is less. But since the weight could not be piled or each of the four sides and two ends at the same time the test could not be made above ground. But so sure was MT. Schor that the machine was strong enough thai he wanted to go down for the practical t st He was persuaded to wait for the second trip.
 Finally all arrangements were compile. ted and with the bell on big scow anc steam holster in the fleet, tug hauled the explorers Seaward.
 The chart showed that the bed of the lake at Milwanke9 inclined gradually from the shore, and when the tug hac travelled nearly twelve miles the deptf of water was considerably more than 200 feet. A pressure gauge made for the pur pose was attached to the box Lashed to thu chains attach d to the end was a scantline projecting sevrral feet to either side. Ropes were attached to this to prevent thu cage from swinging or twisting Insid two stringers, eight by six inches were fast ened across the box just below the win dow to add to the strength of the heav. metal sides and to assist in coping with tn pressure under the water. A long distance telephone was put in working order and tn box was closed. To the steel bar in th' bottom was attached :, 500 pounds of metal but this was found insufficient to sink i and ,5OO pounds of chain were added.
 Then the word was given and the enginee allowed the big bronze box to pass iron view. A brief stop was made to weigh tn entire outfit under water, and the resul was showing of 800 pounds. Here Wal hollow tube ofsix feet weighing, all toll 30, 100 pounds on the surfuce. reduced t. 5CO pounds submerged. indicating that tn weight of water displaced was 26, 1000 pound or thirteen tons.
 Again the thing was started bottom-ward 1 Each of the ropes attached to the scant , lings were marked at intervals of twenty five feet as a check on the depth reached Down, down, it went but it was very not lon before some one saw the telephone com D speechless to the surface. It did not nee ? to be heralded everybody sawit and kne0 what it meant. Then as if all the seltze 'ssseeeeeeoeecoees0SsseoS0@
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