1020 Transactions of the American Institute. 



GLOBE TIME-PIECE. 

 Tile first new invention exhibited Avas Timby's library globo 

 time-piece. This beautiful piece of mechanism is of black walnut, 

 arranged for the bracket, and every care has been taken to make 

 it a first class time-piece. It gives true time and equatorial time. 

 It illustrates time, and the method of measuring time. It illus- 

 trates morning and evening, day and night, and the earth's relative 

 position to the sun. It enables a child, from observation, to become 

 familiar with the geography of the globe, even before reaching the 

 age at which children are put to such studies; or, in other words, 

 it is a self-teacher of geography. It exhibits the diurnal revolu- 

 tion of the earth on its axis. It is a miniature world or model of 

 the earth, put in motion, making a revolution once in twenty-four 

 hours, moved by a superior time movement, requiring to be wound 

 up once in eight days. It is thoroughly regulated by the manufac- 

 turer, and, like all good time-pieces, should not be unnecessarily 

 or carelessly handled. As a piece of ornamental furniture, it has 

 no superior. The dial, marked for twenty-four hours — twelve, 

 twice repeated — encircles the globe, and revolves with it once each 

 day. Only a section of the dial is exposed to view, where it passes 

 under the stationary index (which points the time), the balance 

 being covered by the case. 



STOCK QUOTATION INDICATOR. 

 Dr. L. Bradley exhibited and explained S. S. Law's gold and 

 stock indicator, which is placed in the office of any broker, and 

 gives him a complete report of sales at the stock board. Any 

 number of machines may be operated by the main battery at the 

 stock board. The electro-magnets at each office are made to turn 

 discs on which are the numerals. All the machines ai'e operated 

 by the reporter at the board, in the same way that one telegrapher 

 may send his communications to a hundred difierent stations at the 

 same time. The invention is a great success, and is in very gen- 

 eral use already in this city. 



VALVE-REFITTING MACHINE. 

 The invention exhibited by Mr. Hall renews worn-out valves 

 through the agency of cutting tools and without the use of emery. 

 The proprietors claim that it repairs valves without their detach- 

 ment from connecting pipes; that there is a saving of time and 

 money by the use of this portable tool. The instrument drew out 



