Showing posts with label magnets. Show all posts
Showing posts with label magnets. Show all posts

Wednesday, May 2, 2007

A Remarkable Clock – Magnetism Runs It

1878

A Remarkable Clock.

A magnetic clock, invented by Daniel Drawbaugh, of Milltown, Cumberland county, Pa., is sufficiently remarkable to be worth description.

The magnetism of the earth, an inexhaustible source of power, is made to oscillate the pendulum; and the simplicity of all the works gives an assurance of the least possible friction. At a certain point the movement of the pendulum itself shuts off magnetic connection with the earth, and at another point restores the connection, thus securing the conditions necessary to produce its oscillations. The works are so ingenious and simple that it is no wild assertion to make that, were it not for the unavoidable wearing out caused by even the smallest amount of friction, the clock would run as long as the solid earth endures.

This clock is hung against a board partition, with all the works exposed, subject to the jarrings of machinery and obstructions from dust settling upon it, yet since March 1, 1877, it has been running continuously and uniformly, with only slight reported variations, as tested by transit observations at noon.


Whaling News

The American whaling fleet of 1877 was very successful. There were no special disasters, and no changes in the business worthy of note, excepting the continued additions to the fleet. Twelve vessels were built during the year. The present fleet consists of 187 vessels, against 172 on January 1, 1877, 169 in 1876 and 163 in 1875. The North and South Atlantic ocean employ over 100 vessels, while the more fruitful grounds of the Pacific ocean, Japan and New Zealand are almost deserted. The North Pacific fleet lost three vessels, and sixteen vessels came out with an average of 1,065 barrels of oil and 8,550 pounds of whalebone.

Friday, April 20, 2007

Modern Surgery For The Battlefield – Saving Many Lives

1916

Saving The Soldier – Wonderful Accomplishments of Modern Surgery

German System So Perfect That Desperately Wounded Men Are Restored to Service in Comparatively Short Time

With their characteristic thoroughness the Germans have set themselves to the task of saving every wounded soldier sent back from the front who is not beyond their aid. They are accomplishing wonderful results and thousands of disabled soldiers are soon restored to health and sent back to the firing line, who might have perished miserably were it not for the scientific management of German hospital work.

There is no neglect of the wounded. From the time a man is hurt on the battlefield until he is installed in a hospital, perhaps far away from the scene of his injury, all that could possibly be done for him before he reaches the hospital has been accomplished by skilled hands and when he reaches his destination competent surgeons, who specialize in the kind of wound he has received, begin the final work of healing.

Instead of being the most common operation Ii war surgery, amputation is not practiced now, except as the last resort. Antiseptic treatment has so minimized the danger of infection that the most desperately wounded soldiers are saved and dismissed from the hospitals with, their full complement of limbs.

Not only are German surgeons doing splendid work, but American, French, English and Austrian surgeons are everyday performing remarkable operations. Recently an operation was performed by Prof. Albert Tietze on a soldier who had a serious wound in his head. After a large fragment of shell had been removed the X-rays showed that a small piece of shell remained. Professor Tietze said this particle could not safely be left in the skull because it might become dislodged in future years and cause instant death.

It was suggested that a magnet be used to draw out the splinter. There was no instrument of the sort available, but engineers of the telegraphic division soon made an electro-magnet. A motor, formerly used for running a threshing machine, and a dynamo were requisitioned. The physician took an iron wand, highly polished, and connected it with a coil. The wand was inserted in the soldier's skull and the fragment of shell was easily withdrawn as it clung to the end of the iron.