The Mechanic's Text-book and Engineer's Practical Guide: Containing a Concise Treatise on the Nature and Application of Mechanical Forces; Action of Gravity; the Elements of Machinery; Rules and Tables for Calculating the Working Effects of Machinery; of the Strength, Resistance, and Pressure of Materials; with Tables of the Weight and Cohesive Strength of Iron and Other Metals |
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Common terms and phrases
angle Application avoirdupois beam bisect block and tackle body boiler Brass breadth cast iron centre chord circle circumference column copper cube cube root cubic feet cubic inches cylinder decimal degree depth Diam distance divide the product draw the line effect elastic force engine Fahrenheit feet in length feet per second foot friction frustum given grammar heat hence imperial gallons inches diameter inclined plane integer labour language leading screw lever logarithm means mechanic ment mind motion Multiply number of teeth perpendicular pinion pitch plane practical pressure principle pulley quantity quired quotient equal radius ratio required the area resistance revolutions revolutions per minute Riga Rule shaft side solid square feet square inches square root steam steam-engine strength stroke suppose surface Table taste temperature thickness tion trade triangle unguent velocity weight wheel whole number wrought iron yards
Popular passages
Page 312 - attend to the genuine and manly beauties of good writing, are always ready to be caught by the mere glare of language ; and when they come to speak in public, or to compose, have no other standard on which to form themselves, except what chances to be fashionable and popular, how corrupted soever and erroneous
Page 387 - the Father, but is of the world. And the world passeth away, and the lust thereof: but he that doeth the will of God nbideth
Page 370 - faculties, our natural sense of merit and propriety, approve or disapprove of. We do not originally approve or condemn particular actions ; because, upon examination, they appear to be agreeable or inconsistent with a certain general rule. The general rule, on the contrary, is formed by finding from experience that all
Page 265 - of our good authors, they will find themselves much disappointed. The many errors, even in point of grammar, the many offences against purity of language, which are committed by writers who are far from being contemptible, demonstrate, that a careful study of the language is previously requisite, in all who aim
Page 370 - deformity of the latter quickly excite our emulation or abhorrence. We soon establish a general rule for the regulation of our conduct, which receives a full confirmation from the opinion of the rest of mankind. It is thus that the general rules of morality are formed. They are ultimately founded upon experience of what, in particular instances, our
Page 256 - teach men to speak, but to speak correctly, and according to the exact rules of the tongue, which is one part of elegancy ; there is little use of the one to him who has no need of the other ; where rhetoric is not necessary, grammar may be spared.* The cumbersome heap of worthless rules with which grammars
Page 310 - improvement, than that which relates to the understanding, defines its powers, and shows the method by which it acquires the stock of its ideas, and accumulates general knowledge.* COMPOSITION. When we are employed after a proper manner, in the study of composition, we are cultivating
Page 205 - of literary labour. The hope of increasing them, by any given exertion, will often prove a stimulant to industry ; but the necessity of acquiring them will, in all works of genius, convert the stimulant into a narcotic. Motives by excess reverse their very nature, and, instead of exciting, stun and stupify the mind. For it is one contradistinction
Page 310 - itself. True rhetoric and sound logic are very nearly allied. The study of arranging an.d expressing our thoughts with propriety, teaches us to think, as well as to speak, accurately. By putting our sentiments into words we always conceive them more distinctly. Every one who has the slightest acquaintance
Page 209 - Boccaccio' ( Vita e Costumi di Dante, p. 12. 16) addresses to literary men, I would substitute the simple advice : be not merely a man of letters ! Let literature be an honourable augmentation to your arms, but not constitute the coat, or fill the escutcheon !