Journal of the Franklin Institute of the State of Pennsylvania for the Promotion of the Mechanic Arts: Devoted to Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and the Recording of American and Other Patent InventionsFranklin Institute, 1840 Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-1859. cf. Index to v. 1-120 of the Journal, p. [415] |
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Results 6-10 of 52
Page 110
... levers , of the kind called the toggle joint . The levers are connected to each other by a curved rack which is moved back and forth by a pinion gearing into it , which straightens the pairs of levers alternately . One end of each pair ...
... levers , of the kind called the toggle joint . The levers are connected to each other by a curved rack which is moved back and forth by a pinion gearing into it , which straightens the pairs of levers alternately . One end of each pair ...
Page 146
... lever . In that case a moderate weight is sufficient to counterbalance the greatest pressure . This weight suspended successively from notches made in the lever at various distances from the centre of rotation , like the weight of a ...
... lever . In that case a moderate weight is sufficient to counterbalance the greatest pressure . This weight suspended successively from notches made in the lever at various distances from the centre of rotation , like the weight of a ...
Page 202
... lever or guide - rod is attached to the frame at one end , and at the other it is confined by a slit , which it fits exactly . The slit is formed in a vertical piece of metal which is attached to the movable table of the machine ...
... lever or guide - rod is attached to the frame at one end , and at the other it is confined by a slit , which it fits exactly . The slit is formed in a vertical piece of metal which is attached to the movable table of the machine ...
Page 204
... lever - apparatus , something similar to our lever - pyrometers , and properly insulated by glass stems . If now , a feeble electric tension be given to the tube , the index of the lever - apparatus immediately begins to move , indi ...
... lever - apparatus , something similar to our lever - pyrometers , and properly insulated by glass stems . If now , a feeble electric tension be given to the tube , the index of the lever - apparatus immediately begins to move , indi ...
Page 233
... lever of the first order , the fulcrum of which is fixed in a standard rising from the valve case and extending some distance above the lever , for a purpose to be named presently . The shorter arm of this lever ( which for the sake of ...
... lever of the first order , the fulcrum of which is fixed in a standard rising from the valve case and extending some distance above the lever , for a purpose to be named presently . The shorter arm of this lever ( which for the sake of ...
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ammonia amount apparatus applied arrangement atmosphere average bars bitumen boiler canal carbonic acid carriage cast iron cent Certificate of Honourable claim Clear-do Cloudy-do coal colour combination Committee consists construction containing copper cost cylinder deposited described Dew point diameter distance dollars effect employed equal exhibited experiments Fahrenheit feet Franklin Institute friction frustrum furnace glass heat Honourable Mention improvement inches inclined plane increase invention labour length lever lime liquid locomotive machine magnesia manner manufacture matter means metal miles mode motion nitric acid obtained operation oxide Papin passing patent Philadelphia piece pipe piston placed plate portion pressure produced puddling furnace purpose quantity railroads rails railway resistance revolving road rollers screw shaft side silver solution specimens steam engine stone stroke engine sulphate sulphuric sulphuric acid surface temperature tion tube valve vessel wages weight wheels white lead whole zinc
Popular passages
Page 115 - Be it known that I, John Fitch, of Philadelphia, in the county of Philadelphia, the State of Pennsylvania, have invented a new and improved mode of preventing steam-boilers from bursting, and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.
Page 287 - General, who is a member of the Cabinet of the President of the United States: but, like the other cabinet officers, receives only the moderate salary of 6000 dollars.
Page 98 - The Committee on Science and the Arts constituted by the Franklin Institute of the State of Pennsylvania, for the promotion of the Mechanic Arts, to whom was referred for examination a Solar Compass, invented by WM.
Page 25 - Whenever, through inadvertence, accident, or mistake. and without any fraudulent or deceptive intention, a patentee has claimed more than that of which he was the original or first inventor or discoverer...
Page 18 - The Committee on Science and the Arts, constituted by the Franklin Institute of the State of Pennsylvania for the promotion of the Mechanic Arts, to whom was referred for examination, two reflecting telescopes, made by Mr.
Page 83 - A description and draught of a new-invented machine for carrying vessels or ships out of or into any harbour, port, or river, against wind or tide, or in a calm.
Page 305 - Now know ye, that in compliance with the said proviso, I, the said William Graham, do hereby declare the nature of the said invention, and the manner in which the same is to be performed...
Page 11 - I have taken a piece of a whole cannon, whereof the end was burst, and filled it three quarters full of water, stopping and screwing up the broken end, as also the touchhole, and making a constant fire under it ; within twenty-four hours it burst, and made a great crack...
Page 25 - Office; and it shall thereafter be considered as part of the original specification to the extent of the interest possessed by the claimant and by those claiming under him after the record thereof.
Page 25 - The specifications and claim in every such case shall be subject to revision and restriction in the same manner as original applications are.