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, 1829 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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1.–5. rezultāts no 76.
18. lappuse
... close glass stopper , came up about one - fourth filled with water . The hollow glass globe , hermetically sealed , which was the last , and had been sunk the deepest of all , was found perfectly empty , not having suffered the smallest ...
... close glass stopper , came up about one - fourth filled with water . The hollow glass globe , hermetically sealed , which was the last , and had been sunk the deepest of all , was found perfectly empty , not having suffered the smallest ...
27. lappuse
... close to the cover ; but if it is ex- posed to the clear rays of the sun , during summer , as soon as it has absorbed a certain quantity of the rays , it is strongly repelled , and will continue , when first made , to revolve for hours ...
... close to the cover ; but if it is ex- posed to the clear rays of the sun , during summer , as soon as it has absorbed a certain quantity of the rays , it is strongly repelled , and will continue , when first made , to revolve for hours ...
35. lappuse
... close to the places , or go there daily , share these advantages with the workmen . During the time that an epidemic fever was in full force at two neighbouring places , not one of the workmen in the establishment at Montfaucon was ...
... close to the places , or go there daily , share these advantages with the workmen . During the time that an epidemic fever was in full force at two neighbouring places , not one of the workmen in the establishment at Montfaucon was ...
39. lappuse
... close to each other on a bench . Our watch , either in per- son , or entrusted to another as interested and vigilant as ourselves , commenced at gray dawn , and continued till sunset ; and never with- in that period did the queen bee of ...
... close to each other on a bench . Our watch , either in per- son , or entrusted to another as interested and vigilant as ourselves , commenced at gray dawn , and continued till sunset ; and never with- in that period did the queen bee of ...
64. lappuse
... close manner , once and three - fourths round , which places the eye in the proper position to receive the thread by which it is occupied . This is called the eye part , and the other the loop part of the hed- dle . The loop is put ...
... close manner , once and three - fourths round , which places the eye in the proper position to receive the thread by which it is occupied . This is called the eye part , and the other the loop part of the hed- dle . The loop is put ...
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acid angle apparatus appears applied axle bees bobbin body boiler bottom carriage cast-iron centre claim cloth colour consists construction copper cork crank cylinder described diameter edge effect employed equal experiments feet fire fixed flax force frame FRANKLIN INSTITUTE friction friction wheels furnace glass groove gudgeons heat hemp hive horizontal improvement inches inclined plane indigo invention iron JOHN THORP June 11 length lever liquor machine machinery manner manufacture means metal method mode mordant motion mould nitric acid obtained operation ounces pass patent piece piston placed plane plate pounds present pressure produced purpose quantity rail render revolve rollers Salomon de Caus screw shaft side skins sliding specification spindle steam engine steel stone substances sufficient surface teeth temperature thickness tion tube turn velocity vessel water wheel weight wheel whole wood yarn
Populāri fragmenti
327. lappuse - One vessel of water rarefied by fire driveth up forty of cold water ; and a man that tends the work is but to turn two cocks, that, one vessel of water being consumed, another begins to force and refill with cold water, and so successively, the fire being tended and kept constant, which the selfsame person may likewise abundantly perform in the interim, between the necessity of turning the said cocks.
327. lappuse - 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 touch-hole, and making a constant fire under it ; within twenty-four hours it burst and made a great crack.
156. lappuse - Go, from the creatures thy instructions take : Learn from the birds what food the thickets yield ; Learn from the beasts the physic of the field: Thy arts of building from the bee receive; Learn of the mole to plough, the worm to weave ; Learn of the little nautilus to sail ; Spread the thin oar, and catch the driving gale...
189. lappuse - If an inventor should be permitted to hold back from the knowledge of the public the secrets of his invention ; if he should, for a long period of years, retain the monopoly, and make and sell his invention publicly, and thus gather the whole profits of it, relying upon his superior skill and knowledge of the structure; and then, and then only, when the danger of competition should force him to secure the exclusive right...
89. lappuse - I would not enter on my list of friends (Though graced with polished manners and fine sense Yet wanting sensibility) the man Who needlessly sets foot upon a worm. An inadvertent step may crush the snail That crawls at evening in the public path, But he that has humanity, forewarned, Will tread aside, and let the reptile live.
327. lappuse - ... stopping and screwing up the broken end, as also the touch-hole, and, making a constant fire under it, within twenty-four hours it burst, and made a great crack...
190. lappuse - ... the court say that his case is, nevertheless, such as the act was intended to protect ? If such a public use is not a use within the meaning of the statute, what other use is?
189. lappuse - ... had been described in some public work anterior to the supposed discovery of the patentee...
172. lappuse - TAKING wheels completely in the abstract, they must be considered as answering two different purposes. First, they transfer the friction which would take place between a sliding body and the comparatively rough uneven surface over which it slides, to the smooth oiled peripheries of the axis and box, where the absolute quantity of the friction as opposing resistance is also diminished by leverage, in the proportion of the wheel to that of the axis. Secondly, they procure mechanical advantage for overcoming...
327. lappuse - An admirable and most forcible way to drive up water by fire, not by drawing or sucking it upwards, for that must be as the philosopher calleth it, infra spheeram activitatis, which is but at such a distance. But this way hath no bounder, if the vessels be strong enough ; for I have taken a piece of a whole cannon, whereof the end was burst, and filled it...