The object of lubrication is to interpose a film of oil, grease or some lubricant between the two surfaces that will prevent these rubbing surfaces from coming into too intimate contact.
When an engine is equipped with Elvin driving box lubricator, how can you tell whether a sufficient amount of lubricant is in the grease receptacle?
A copious supply of lubricant is, of course, furnished to the tools during these operations, and the two boring-tool shanks are hollow so that lubricant can be forced through them and be made to play directly upon the cutters.
The dirt caused by mixing the fine cast-iron turnings with a cutting lubricant is an objectionable feature which, in the opinion of many, more than offsets the increase in cutting speed that might be obtained.
Formerly, a lubricant composed of one part of high-grade lard oil and one part of kerosene was used.
Turret lathes and automatic turning machines are equipped with a pump and piping for supplying cooling lubricant to the tools in a continuous stream.
A good grade of lard oil is an excellent lubricant for use when turning steel or wrought iron and it is extensively used on automatic screw machines, especially those which operate on comparatively small work.
Owing to the inconvenience in using a lubricant on an engine lathe, steel, as well as cast iron, is often turned dry especially when the work is small and the cuts light and comparatively short.
This lubricant not only gives a smooth finish but preserves a keen cutting edge and enables tools to be used much longer without grinding.
When cutting threads in steel or wrought iron, some sort of lubricant is usually applied to the tool to preserve the cutting end and give a smooth finish to the thread.
Roughing Cut--Light Finishing Cut and Coarse Feed] =Effect of Lubricanton Cutting Speed.
Care should be taken not to employ so soft a lubricant or so large an excess as to cause it to run down the stirrer into the liquid which is being stirred.
The fourth condition is that a suitable lubricant be used; a strong solution of camphor in oil of turpentine is perhaps the most suitable.
And for petroleum as a lubricant there is no commercially available substitute.
If the overheating of the piston is not due to faulty adjustment, it may be caused by lack of oil or to the employment of a lubricant not suitable for the purpose.
Lubrication is faulty when the quantity of lubricantsupplied is either insufficient or too abundant, or when the oils employed are of bad quality.
The lower part of the ring is immersed in an oil bath so that a certain quantity of lubricant is continually transferred to the shaft.
Especially in producer-gas engines is an excess of cylinder-lubricant likely to cause such accidents.
In most cases it will be found that a little lubricant is needed in order to prevent cutting the brushes, cutting the commutator; this is especially the case when hard strip brushes are used.
The lubricant is carried under pressure to the various parts of the engine by the mechanism shown in the accompanying diagram.
Hence, the necessity for lubrication--a lubricant presents a thin intervening film against which the surfaces rub.
The Smith & Wesson Russian model cartridge was designed by officers of the Russian government, but why they decided to have an outside lubricant the writer could never conceive.
When cool, remove surplus lubricant by forcing bullets through a tube the size of bullet.
The placing of the lubricant on the exposed part of the bullet, instead of in cannelures covered by the shell.
It had been loaded several years, and the lubricant was hard, and in many cases partially detached from the bullet.
Evenly distributing thelubricant is essential to secure even shooting.
The lubricant is first introduced to the oil-boxes marked A, from which it passes to the recess B, where it comes in contact with the piston rod.
To prevent the lubricant from being wasted by running down the rod, the main gland is provided with a shallow gland and stuffing-box which is filled with soft cotton packing, which soaks up the lubricant.
Tho bullet was recovered, no lubricant being found in the cannelures, and re-weighed, the weight obtained being 485.
For instance, the ideal lubricant for the airplane motor is castor oil.
The oil will be warmed by the motor and it will not require many minutes of operation before a lubricant made thick by a low temperature will flow freely and do its work as efficiently as a thinner oil.
As the distance that the rods and stems travel through the guides is comparatively short, the wear is slight and only a small amount of lubricant is needed, provided the rubbing surfaces are smooth and well-fitted to each other.
Thus it is actually upon a film of lubricant that a shaft rests, rather than upon the bearing, or "box," in which it turns.
This is because of the unequal pressures on the different sides of the bearing that allow no room for the admission of the film of oil or other lubricant that is necessary in all cases to prevent a "hot box.
In general, however, it may be said that it is seldom that the oil is fed directly to the piston, but that the lubricant is first distributed to the oil wells in the crank case.
Here, the splash of the cranks as they revolve in the oil is depended upon to throw the lubricant upon the exposed portion of the piston as it reciprocates below the cylinder walls.
It will be seen that, no matter what modern oiling system is used, the same kind of lubricant is supplied to all parts of the motor.
When the babbitt cools, the shaft may be turned, and when lubricant has been introduced in the oil grooves which should have been provided for the purpose, the new bearing will be ready for use.
Any acid remaining on the steel will neutralize any lubricant that is applied when spinning.
Lubricants Common yellow soap cut up in strips about ½ inch or ¾ inch square is a good lubricant for spinning most metals.
Be sure to recheck transmission to see that lubricant is at correct level and not leaking.
If lubricant fittings or plugs are missing or damaged, replace them.
When installing new lubricant retainer seals, a coating of thelubricant should be wiped over the sealing surface of the lip of the seal.
Wipe off excess applied lubricant that may drip onto brake or operating surfaces, soil clothes, or detract from vehicle’s appearance.
On unsealed joints or bushings, applylubricant until it appears at openings.
These specify the points to be lubricated, the periods of lubrication, and the lubricant to be used.
Do not apply more than specified amount of lubricant to generator or timer (circuit breaker).
Oil or other lubricant is introduced through the hole (G), and it passes through the top brass to grooves or oilways cut into the surface of the brass for the purpose of distributing the oil uniformly to the journal.
Claude has recently made great progress on this point by the use, during the running of the machine, of the ether of petrol, which is uncongealable, and a good lubricant for the moving parts.
Liquid petrolatum is medicinal; it greatly modifies the intestinal flora; it acts as a lubricant and emollient; it modifies the absorptive powers of the intestinal mucous membrane; it is capable of influencing the digestion of fats.
He went off, hunting savagely for the supplies of fuel and lubricant which would be stored at any emergency field.
Bits of shattered metal were in the oiling system, and they had partly blocked the stream of lubricant until the engine heated badly.
A relief check valve is installed to take care of excess lubricant and to allow any oil that does not pass back into the pipe line to overflow or bi-pass into the main container.
The engine should be run with more than the ordinary amount of lubricant for several hours after new piston rings have been inserted.
A very interesting chemical analysis of a sample of carbon scraped from the interior of a motor vehicle engine shows that ordinarily the lubricant is not as much to blame as is commonly supposed.
The closer the parts fit together the more fluid the lubricant must be to pass between their surfaces, and at the same time it must possess sufficient body so that it will not be entirely forced out by the pressure existing between the parts.
This operation requires the utmost care of tools and the use of a good lubricant to prevent the metal from tearing as the tools approach their full depth.
The level is maintained by an overflow pipe which allows all excess lubricant to flow back into the oil container at the bottom of the cylinder.
The crank cheeks are also built to convey the lubricant to the crank-pins.
Second--The lubricant must not coagulate or gum; must not injure the parts to which it is applied, either by chemical action or by producing injurious deposits, and it should not evaporate readily.
The cylinder walls are oiled by the spray of lubricant thrown off the revolving crank-shaft by centrifugal force.
The lubricant is drawn from the sump or oil container by means of a positive oil pump which discharges directly into the engine case.
The step-lubricant is forced up through this hole and out between the raised edges in a film, floating the rotating parts of the machine on a frictionless disk of oil or water.
Though no man may move wholly out of his own nature, a cheerfulness of manner in the doing of work is altogether within any individual's capabilities, and is the highest-test lubricant of his human relationships.
They know that this is a lubricant in the machinery of organization and the best way to sweeten the lives of men working together in a group toward some worthwhile purpose.
In many cases, oil-ways and grooves are cut in the bearings, and the lubricant is allowed to run by gravity into them and thus finds its way between the opposing surfaces.
In cases where it is important that little if any wear should take place, the lubricant is forced by means of a pump between the friction surfaces and a constant film of oil is thereby maintained between them.
In such cases, the lubricant which keeps the surfaces from abrading each other is a mere contamination film, either derived from the air or put on when the surfaces are finished.
Were it not for the escape of heat by conduction through the lubricant and the metal, lubrication would be impossible.
Generally speaking, the greater the viscosity of the lubricant the greater the load the bearing will carry, but with thick lubricants the frictional coefficient is correspondingly high.
In many instruments or machines where the surfaces in contact which have to slide upon each other are only lightly pressed together, and are only occasionally given relative motion, the lubricant is only needed to prevent abrasion.
In the case of individual bearings, such as those of railway vehicles, a pad of cotton, worsted and horse hair is kept saturated with the lubricant and pressed against the under side of the journal.
In all ordinary cases, the coefficient of friction of flat surfaces, such as those of slide blocks or pivot bearings, is high, owing to the fact that the lubricant is not easily forced between the surfaces.
The result was that all subsequent attempts to reduce the empirical facts, where a lubricant was used, to such general laws as might reveal the separate functions of the complex circumstances on which lubrication depends, completely failed.
The slushing-oil will replace synovial oil as a lubricant for cross-head guides, etc.
Number 4½ lubricant only will be used in grease-cups.
Prior to artillery practice the bore, including the powder-chamber, of each piece to be used in practice will be thoroughly cleaned and freed from lubricant before any shot is fired.
The edge of the tray is thus favourably situated for acting as a "wipe," and the lubricant is transferred to the inside of the tray.
By the action of an acid lubricant upon the brass, with the formation of a metallic soap which has a decided green colour, unless obscured by the dark colour of the oil or grease.
On nearly all machines the tray is wider than the effective portion of the rolls, so that any excess of lubricant may drop into it.
In the majority of specimens upon which had been smeared a small streak of lubricant taken from the bearings of machines, tackiness had supervened, and had developed likewise in the contact "blanks.
The water obtained in this way is the purest hitherto obtained.
Still I should hesitate to call it absolutely pure.
It has been acclaimed "the most grateful lubricant known to the human machine," and "the most delightful taste in all nature.
Granted that this is so, coffee, already recognized as the most grateful lubricant known to the human machine, is destined to play another part of increasing importance in our national life as a kind of national shock-absorber as well.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "lubricant" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: emollient; lenitive; mucilage; mucus; salve; soothing; wax
