It is through this second pulley that the blade is given the desired tension, and to this effect its axle is forged with a small disk adjusted in a frame and traversed by a screw, d', which is maneuvered through a hand wheel.
By this means the thread which is passing from one pulley to the other is stretched by an amount equal to the difference of the winding speed of the two pulleys.
Upon the thumb of every adult was a ring in which a string was tied that went through a pulley above and communicated with a bell in the attendant's room.
When you go behind the historical scenery, you find there is a rope and pulley to effect every transformation which has astonished you.
On leaving the drum C the rope passes under a guide pulley F, and then over a large pulley G carried in a fork at the top of the piston-rod of a vertical single-acting steam cylinder.
The essential parts are the active wire A, stretched between terminals T and T´, tension wire C, thread E, and pulley D to which is attached the pointer.
To this apex was fixed a pulley over which ran the cable that supported the dredges or bag-nets, which latter were thus carried over the boat's sides.
Upon the axle of the winding pulley there is a break pulley, p.
The width of pulley should equal 1·2 times width of belt.
W = A/L, where L = length of belt on driven pulley in inches.
A = covered area of drivenpulley in square inches.
L = length of arc of contact upon smallerpulley in inches.
In the window stood the table where the family and servants all ate together, and above it hung, suspended by a pulley and string from the ceiling, a curious contrivance for holding spoons.
Then by means of a rope and pulley to which the basket was attached (it must have been used for raising and lowering hay and fodder) we pulled poor Raoul up to the rafters, and there we left him and forgot all about him.
The tremendous "monkey" goes high up, almost out of sight overhead, and glides noiselessly downwards till it beats the metal, making the pulley chains rattle and jingle and the whole shed to totter and tremble.
This joint is extensively used in the pattern making trade for lap-jointing the arms of pulley patterns, etc.
Plan and elevation show rim pattern of a pulley as used in the pattern-making trade.
Pulleys, pulley rims, and a hundred and one other jobs are built by this method.
It may be taken that the centrifugal force of a pulleywill increase in proportion to the square of its velocity; hence the centrifugal force of a pulley 2 ft.
The speed at which vertical elevators should be run will depend on the diameter of the terminal pulley, that is, the pulley over which the buckets and bands pass.
To keep the carriage steady on its return empty, a rope, known as the sea-anchor line, is stretched above the two strands of the conveyor line, and under a pulley on the carriage.
At what period of history ropeways were first used it is impossible to say, but the fact that pulley blocks, and even wire ropes, were known to the ancients, renders a pedigree of 2000 years at least possible.
The tightening of the band at the bottom terminal in the elevator well necessarily alters the space between the terminal pulley and the bottom of the well.
It consists essentially of a freely-moving pulley over which runs a fine cord with two equal weights suspended from the ends.
From this point the wire rope passes through the various pulley blocks towards the rear of the machine, and through the pulley block (46) mounted on the side and near the bottom of the rear lower guy-post.
The model aerodrome was flown by a cord connected to it by a bridle, the cord passing over a swivel pulley on top of the mast and down into the boat, whence it could be played out or hauled in as occasion required.
The Edison machine is of this type, and is illustrated in figure 43, where M M' are the field magnets with their poles N S, between which the armature A is revolved by means of the belt B, and a pulley seen behind.
Moreover, Maseden had bribed the forecastle steward to find out from one of the saloon attendants what had happened to the two ladies on the promenade deck when the pulley fell.
Maseden was aware that the shrinking figure by his side was trembling violently, and a wave of pity for her surged through his heart.
He paused dramatically, and said something which might, perhaps, sound better in Spanish.
MY NEW Patent Pulley Cover will do double the work before the belt will slip.
In cross section the rim of a pulley for carrying a flat band is generally curved as shown in figs.
Draw a complete side elevation and a complete cross section of the pulley represented in fig.
The driving band is shifted from the one pulley to the other by pressing on that side of the band which is advancing towards the pulleys.
By this arrangement of keys the same pulley may be fixed on shafts of different diameters by using keys of different thicknesses; also the pulley may be bored out large enough to pass over any boss which may be forged on the shaft.
The part of the shaft upon which a key rests is called the key bed or key way, and the recess in the boss of the wheel or pulley into which the key fits is called the key way; both are also called key seats.
When the driving band is on the loose pulley the machine is at rest, and when it is on the fast pulley the machine is in motion.
The cone keys for securing the pulleyto the shaft were described on p.
The diameter of thepulley should not be less than 30 times the diameter of the rope.
The nave or boss of the loose pulleyis here fitted with a brass liner, which may be renewed when it becomes too much worn.
The curved cross section of the rim tends to keep the band from coming off as long as the pulley is rotating.
The space between the shaft and the boss of the pulley is filled with three saddle or cone keys.
The loose pulley is prevented from coming off by a collar D, which is secured to the shaft by a tapered pin as shown.
This apparatus was placed on the beacon side of the bridge, at the distance of about twelve feet from the cross-beam and pulley in the middle of the bridge.
In the same manner a rope furnished with a travellingpulley was distended for the purpose of transporting the mortar-buckets, and other light articles between the beacon and the building, which also proved a great conveniency to the work.
The pulley was up near the roof of the house, and the rope dangled to the ground.
On the other end of the rope, as it ran over the pulley wheel at the roof of the ice-house, was Baby William.
Two fast pulleys and one loose pulley are interposed between the machine to be tested and the motor.
Besides, the pulley shaft actuates a revolution counter, and a clock measures the time employed in the experiment.
The greater or less elongation of these plates gives the tangential stress exerted by the driving pulley to carry along the pulley that actuates the machine to be tested.
The pulley connected with the motor carries along the one connected with the machine, through the intermedium of spring plates, whose strength varies with the nature of the apparatus to be tested.
The diameter of the driven pulley or wheel being given, to find its number of revolutions.
The shelving for supporting the belt when the tightening pulley is thrown back is not shown.
Where there is one mill the shaft is long enough to receive the pulley and one journal box outside.
Dear Sirs:--I have had one of your 36-inch Pulley Mills and 18 feet Bolt in operation nearly one year.
They can be furnished complete with a large iron hopper, and set on a frame, with gearing, shaft, tight and loose pulley attached if so ordered.
By keeping the pulley in the proper position the belt raises from the shelving and touches nothing but the pulleys when in motion.
A pulley is used to lift the lid of the inner cylinder, around which the clothes are hung on pegs, not being allowed to touch the side of the cylinder.
This furnace is divided into two compartments, separated by an iron door, which can be opened or shut by means of a pulleyplaced outside.
It is led aft from the ripping panel to a pulley fixed centrally over the centre of the car, from the pulley the cord passes round the side of the envelope and through a gland immediately below the pulley.
Then he turned to the miners standing round: "I want the pulley and rope that we were using at the Vaughan, and that small cage that was put together to work with it.
A hundred and forty fathoms of rope, the depth of the shaft being a hundred and twenty, had been prepared, and was in readiness to be passed over a pulley suspended above the shaft.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "pulley" in a variety of sentences. We hope that you will now be able to make sentences using this word.
