Then by resisting this motion by a spring or pendulum the movement is proportional to the current, and a tangent wheel actuated by this movement causes the reciprocating cylinder on which it runs to integrate the current strength.
A special use of these integrators is for finding the total work done by a fluid pressure reciprocating engine.
From the upper end of the cylinder there is a passage that, by means of a rotating or reciprocating slide, is alternately put in communication with the receptacle and with a discharge outlet.
From the lower end of the cylinder there is a passage which, by means of a rotating orreciprocating slide, is alternately put in communication with inlets for gas and air (regulated by suitable cocks or valves) and with a strong receptacle.
Through the abolition of the principal causes of excessive vibration--which renders dangerous the enlargement of marine reciprocating engines beyond a certain size--the final limit of possible speed has been indefinitely extended.
For the treatment of a thin layer of slimes, perhaps no thicker than a sixpence, it is necessary to violently agitate, with a reciprocating movement, a large and heavy framework.
By slow speed is here understood relatively slow speed, such as the usual speeds of reciprocating engines.
Reciprocating motion is imparted to the lower pulley by Scotch yoke connection with the drive pulley.
To move with a reciprocating motion; to move backward and forward, or upward and downward.
Moving up and down, or to and fro; having a reciprocating motion.
The reciprocating movements thus obtained are employed as a source of mechanical power in any desired manner.
There is a piston in a cylinder made to reciprocate automatically by proper dispositions of parts, similar to a reciprocating tool.
This was the birth-idea of the reciprocating blade, which has been used to this day on all grain-cutting machines.
After careful consideration of the possible use of steam turbines as prime-movers to drive the alternators, the company's engineers decided in favor of reciprocating engines.
The massive concrete foundations for the reciprocating engines contain each 1,400 yards of concrete above mean high water level, and in some cases have twice as much below that point.
Defn: To move with a reciprocating motion; to move backward and forward, or upward and downward.
One brawny smith the puffing bellows plies, And draws and blows reciprocating air.
In a sawmill, the rectangular frame in which the saw is strained and by which it is carried up and down with a reciprocating motion; - - also called gate.
Defn: Moving up and down, or to and fro; having a reciprocating motion.
Rotary pump, a pump in which the fluid is impelled by rotating devices which take the place of reciprocating buckets or pistons.
Needle bar, the reciprocatingbar to which the needle of a sewing machine is attached.
Defn: The length of stroke of a reciprocating piece; as, the travel of a slide valve.
Universal lever, a machine formed by a combination of a lever with the wheel and axle, in such a manner as to convert the reciprocating motion of the lever into a continued rectilinear motion of some body to which the power is applied.
The alternators or dynamos may be driven by steam or water turbines, reciprocating engines, or gas engines, according to the character of the natural energy available.
Why is the reciprocating engine being largely replaced by the steam turbine, especially for large units?
In the Westinghouse designs, the operating valve, A is connected not only to the governor, but also to a vibrator, which gives it a slight but continuous reciprocating motion, while the governor controls its mean position.
A turbine should operate with a high vacuum, because without this it does not compare favorably with an ordinary reciprocating engine from the point of economy.
If this limit be reached with a single crank reciprocating engine, a unit of double the power may be produced at the same speed by coupling two single crank engines to one shaft.
As shown, the blower is operated by a small reciprocating engine; however, compact blowing units with steam turbine drive can be had and which are designed to be placed in the boiler setting.
When all the power is furnished by the turbine, it is designed for high pressure; when operated in combination with a reciprocating engine, low pressure is used for constant load, and mixed pressure for variable load.
With reciprocating engines, the crank effect is very variable during the revolution, resulting in pulsations driving the alternator too fast or too slow, and causing cross current between the alternators.
A reciprocating motion is given to the rod I by a small eccentric on the governor shaft; this is driven by worm gearing shown near O in fig.
Low pressure, as here applied, means the exhaust pressure of the reciprocating engine from which the exhaust steam passes through the turbine before entering the condenser.
Because of its higher rotative speed, and absence of a multiplicity of bearings which in the case of a high speed, reciprocating engine must be maintained in close adjustment for the proper operation of the engine.
Is the steam turbine more economical than a high duty reciprocating engine?
So with the single flow steam turbine as well as with the single crank reciprocating engine, there is a practical limiting economical capacity for any given speed.
I have fixed my mind upon making from twelve to fifteenreciprocating engines and fifty rotative engines per annum.
His plan--not a new one, though it had never before been made available in practice--was to substitute for the ordinary reciprocating engine a machine which should at once produce a circular motion.
But it was all in vain; the smoke then made its way out from another part of the cornice, and at last the rooms exhibited a beautiful reciprocating action.
But above all, there is nothing of more importance than the perfect completion of the double expansive reciprocating engine as soon as may be.
I have fixed my mind upon making from twelve to fifteen reciprocating and fifty rotative engines per annum.
Whether it would be possible to manage the wheel and reciprocating engines by separate partnerships without their interfering I am not certain.
By the middle of March he had sufficiently matured his ideas of a reciprocating expansive engine to enable him to take out letters patent, and the invention was enrolled on the 4th of July in the same year.
The rods of each piston are connected to a circular barrel of cast iron by means of chains, so that whilst one piston moves down the other ascends, and so gives the barrel a reciprocating motion.
When it declares the essence of the subject, Aristotle calls it the Definition; when it does not declare the essence of the subject, althoughreciprocating therewith, he reserves for it the title of Proprium.
These remarks have no application to reciprocating propositions, in which the predicate is co-extensive with the subject.
It will be still worse, if it comprises any attribute not belonging to all individuals of the species; for then it will not even be a proprium or a reciprocating predication.
The proprium and its subject are not reciprocating and co-extensive; therefore it is not a true proprium.
The Inductive Syllogism, as constructed by Aristotle, requires a reciprocating minor premiss.
The result was the reciprocating steam engine in its main features, as it exists today.
The greatest single defect of rotary engines has always been the loss of steam in going by the rotating parts without doing any work, a defect existing in only a small degree with the closely fitting pistons of reciprocating engines.
The steam turbine was an improvement over the reciprocating steam engine for many classes of work, great and small.
The first steam engine that was really efficient was thereciprocating engine produced by Watt.
Riders of machines where circular motion is employed, among them myself, do not believe that this reciprocating motion can be so good as circular, but I understand that this view is not held by those who are used to it.
Of course, the harmonic motion of the Facile pedal is superior to the equable reciprocating motion employed in some machines where speed is an object, especially with small wheels.
Loops of thread from the needle were locked by a thread carried by a shuttle, which was moved through the loop by means of reciprocating drivers.
They began the manufacture of the machines under the patent, which combined the rotary hook and a reciprocating bobbin.
It made a lockstitch by means of a straight eye-pointed needle and a reciprocating shuttle.
The true Bartholf machine evolved when the manufacturer substituted Howe's reciprocating shuttle for the rotary shuttle of the Blodgett & Lerow machine, continuing to manufacture the machine in his own adapted style.
The rotary hook extended or opened more widely the loop of the needle thread, while a reciprocating bobbin carried its thread through the extended loop.
The shuttle movement was continuous, revolving in a circle, rather than reciprocatingas in the earlier machines.
To avoid litigation which the reciprocating bobbin might have caused, Wilson contrived his third outstanding invention--the stationary bobbin.
Nor is this any very easy matter; for in his rear is the immense projecting steering oar hitting him now and then in the small of his back, the after-oar reciprocating by rapping his knees in front.
The great difficulty has lain in the fact that a reciprocating motion, which is essential for certain kinds of drilling, is not readily secured with electric power.
No special features are embodied in most of the types of mining pumps over the rotary and reciprocating types used for ordinary purposes, except perhaps a type of pump known as the sinking pump.
There is an obvious advantage in economy of space as compared with the reciprocating engine.
The first attempts to produce an electric drill with a reciprocating motion were so unsuccessful that inventors turned their attention to perfecting some rotary device.
When, therefore, the shaft revolves, carrying the eccentric with it, the rod attached to the encircling hoop receives a reciprocating motion, just as it would do if attached to a crank in the shaft.
If (Glaukon urges) you can only recommend justice when taken in conjunction with the requiting esteem and reciprocating justice from others towards the just agent, this is no recommendation of justice at all.
It is in this way that weight forms a factor in flight, the wings and the weight of the body reciprocating and mutually assisting and relieving each other.
The figure-of-8 action of the wing explains how an insect or bird may fix itself in the air, the backward and forward reciprocating action of the pinion affording support, but no propulsion.
