| Show THE JACKSON ROTARY compressor the jackson compressor company ot of denver colorado has published a catalogue descriptive of the jackson rotary compressor and telling of its advantages in this work the writer sums up the main features of the compressor as follows 1 simple construction having only five moving parts necessary to compress compres sair air and an approximate like number of parts making up the cylinder and base adrat advantages less operating attention and upkeep up keep 2 light weight about one half as 21 much in weight as the piston types advantages less hauling cost and a greater range of adaptability very adaptable in portable types 3 small size covering only one fourth the floor space of the average piston type advantages less hauling cost and a greater range of adaptability very adaptable ill a portable types 3 small size covering only one founta arth the floor space of the average piston type and an advantages a saving in foundation through ibrous floor transported space can be as m naine very small passageways eways such shafts etc addan t 4 quiet and smooth running ages inexpensive foundations no disagree location lacau able noise easy to find a suitable for installation 5 valve trouble practically ell eliminate Inina ted ro our the only necessity for valves in of 0 re tary compressor is for the purpose required to operate oper the horsepower these valves can be entirely ren removed loved aroln i the voa the compressor without decreasing in a 11 PIS p ume of air compressed if a valve it ton type compressor ceases to operates opera no air immediately ceases to compress dill carbon deposits on valves or elsewhere to perfect cooling and the peculiar system of oiling that we employ which is the circulating system 6 greater volumetric efficiency due to the fact that the air is taken into the compressor and is compressed by compressing members that are moving in one direction only there is no possible chance for compressed air to re expand back into the chamber that is taking air in at atmospheric pressure in a piston type compressor it is impossible to eliminate this re expansion of air which is due to the fact that all piston compressors have a certain amount of clearance between piston and cylinder head at the end of the stroke and a considerable clearance due to valves when a piston reverses its movement after compressing a charge of air this pocketed air re expands when compressing air to pounds gauge about eight times thereby cutting down the intake capacity or in other words it is compressing a certain amount of air over and over again this re compressing of air results in greater heat wasted power and lower volumetric efficiency 7 the oiling of our rotary compressor is very simple and effective there being only ohly one place to supply oil and an oil feed orifice that will feed just enough oil to properly lubricate the compressor and bearings the system is of the circulating type which insures ample lubrication with a minimum loss of oil A large percentage of compressor troubles are due to neglect in oiling this responsibility is reduced to a minimum in our rotary compressor 8 friction is not only reduced in our compressor due to having few moving parts but because we also have few bearings the part in our compressor that carries the compressing members we call a rotor this rotor has a bearing at each end and is mounted with the highest type of roller bearings that can be obtained on the market 9 A big item in our rotary compressor and one of vital interest to all compressor users is the saving 0 of horsepower and wear and tear on the power medium in our smaller compressors however it is not as much of an item as in the larger ones this feature f in our compressor is due to few moving parts rotary motion ideal bearing conditions and ample lubrication 10 for vacuum pumping our rotary compressor cannot be excelled with our type A we can maintain a vacuum within three tenths of absolute to the engineer this is evidence of high volumetric efficiency which we make claims for 11 easy starting all of our compressors are equipped with a discharge advantages easy starting and less horsepower while running in vacuum when compressor Is equipped with intake |
