The Engineer's and Mechanic's Encyclopædia: Comprehending Practical Illustrations of the Machinery and Processes Employed in Every Description of Manufacuture of the British Empire ...T. Kelly, 1846 |
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Page 25
... position and size of these consist the principal merit of the sharpener . When used for sharpening scythes , or other large cutting instruments , the conical pieces are made larger , and fitted on an axis between two prongs of a forked ...
... position and size of these consist the principal merit of the sharpener . When used for sharpening scythes , or other large cutting instruments , the conical pieces are made larger , and fitted on an axis between two prongs of a forked ...
Page 43
... position with respect to each other . M. Osler , of Birmingham , however , has lately introduced a great improvement in this branch of the subject ; instead of a great number of detached crystal drops , he forms a complete casing for ...
... position with respect to each other . M. Osler , of Birmingham , however , has lately introduced a great improvement in this branch of the subject ; instead of a great number of detached crystal drops , he forms a complete casing for ...
Page 73
... position , as may be required . The skin as it is split passes through the opening H , and thence on to the roller G , whereon it is wound . Motion is given to the machine by a band passing round the pulley B , which actuates the pul ...
... position , as may be required . The skin as it is split passes through the opening H , and thence on to the roller G , whereon it is wound . Motion is given to the machine by a band passing round the pulley B , which actuates the pul ...
Page 89
... position by wrought copper nails , so as to present a fair surface . The metallic line thus constructed will then pass downward from the copper spindle at the mast - head , along the aft sides of the royal mast and top - gallant mast ...
... position by wrought copper nails , so as to present a fair surface . The metallic line thus constructed will then pass downward from the copper spindle at the mast - head , along the aft sides of the royal mast and top - gallant mast ...
Page 92
... position in a frame , which is made to reciprocate up and down , by means of a treadle or pedal . When this pedal is pressed upon by the foot of the workwoman , it causes the blade to descend vertically with its edge across a board or ...
... position in a frame , which is made to reciprocate up and down , by means of a treadle or pedal . When this pedal is pressed upon by the foot of the workwoman , it causes the blade to descend vertically with its edge across a board or ...
Autres éditions - Tout afficher
The Engineer's and Mechanic's Encyclopædia: Comprehending ..., Volume 2 Luke Hebert Affichage du livre entier - 1836 |
The Engineer's and Mechanic's Encyclopædia: Comprehending ..., Volume 2 Luke Hebert Affichage du livre entier - 1835 |
The Engineer's and Mechanic's Encyclopædia: Comprehending ..., Volume 2 Luke Hebert Affichage du livre entier - 1836 |
Expressions et termes fréquents
acid annexed apparatus applied arrangement atmospheric atmospheric railways attached axis axle beam boiler bolts bottom break of gauge broad gauge carriage centre colour common condenser connected connecting rod consists construction copper crank cupel cylinder described diameter distance edge effect employed engine equal feet fixed force frame furnace gauge glass groove heat holes horizontal improvements inches inclined plane invention iron lamp length lever locomotive lower machine machinery means metal miles miles per hour mode motion mould narrow gauge obtained operation paper passing patent pieces pipe piston piston rod placed plate potash pressure propelling pulley pump purpose quantity rails railway revolving rollers rope round screw seed-lac shaft shown side skin slide specific gravity steam steam engine stone substance surface thick tube turned turpentine upper usually valve velocity vertical vessel weight wheels wire wood
Fréquemment cités
Page 116 - These are usually accounted six in number, viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw.
Page 262 - ... Provided also that any declaration before mentioned shall not extend to any letters patent and grants of privilege for the term of fourteen years or under, hereafter to be made, of the sole working or making of any manner of new manufactures within this realm to the true and first inventor and inventors of such manufactures, which others at the time of making such letters patent and grants shall not use...
Page 651 - 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 and Tide, or in a calm.
Page 133 - Earth. An inch is the smallest lineal measure to which a name is given, but subdivisions are used for many purposes. Among mechanics, the inch is commonly divided into eighths. By the officers of the revenue and by scientific persons it is divided into tenths, hundredths, &c.
Page 266 - ... having invented or used the same, or some part thereof, before the date of such letters patent, or if such patentee or his assigns shall discover that some other person had, unknown to such patentee, invented or used the same...
Page 267 - ... notwithstanding : Provided that no such extension shall be granted if the application by petition shall not be made and prosecuted with effect before the expiration of the term originally granted in such letters patent.
Page 132 - Take a pendulum which will vibrate seconds in London, on a level of the sea, in a vacuum; divide all that part thereof which lies between the axis of suspension and the center of oscillation, into 391393 equal parts ; then will 10000 of those parts be an imperial inch, 12 whereof make a foot, and 36 whereof make a yard.
Page 402 - In the formation of the railway there have been dug out of the different excavations, upwards of three millions of cubic yards of stone, clay, and soil, and the weight of the double lines of rail laid down is more than 4,000 tons. The total expenditure of the Com-pany, in actual payments, up to the 31st of May last, was 739,165Z.
Page 360 - ... its capacity will be enlarged, the valve F will be shut by its own weight, the air in the bag will be rarefied, and the atmosphere will press the water into the bag. When the rod is thrust down again, this water will come out by the valve F, and fill part of the trunk.
Page 40 - The gauze cylinder should be fastened to the lamp by a screw of four or five turns, and fitted to the screw by a tight ring. All joinings in the lamp should be made with hard solder ; and the security depends upon the circumstance that no aperture exista in the apparatus larger than in the wire gauze.