Compressor Unit

This invention relates to the construction of a compressor, and more particularly to a combined fluid-operated engine and compressor.

The primary object of the invention, is the provision of a compressor of this character, wherein there is arranged an automatically counterbalanced crankshaft and fluid equalisers within a storage tank, which makes it possible for the engine to operate on constant reserve tank pressure, so as to actuate additional equipment, the pistons for the engine also being automatically balanced and suspended when the engine is operating.

Another object of the invention is the provision of an engine which is operated by air under pressure, the air being supplied by compressors which are in a bank with the engine construction.

A further object of this invention is the provision of an engine of this type of novel construction as the engine and the compressors are operated from the same crankshaft, which is of the automatically balanced type, so that high efficiency is attained.

A still further object of the invention is the provision of an engine of this character which is comparatively simple in construction, thoroughly reliable and efficient in its operation, strong, durable, and inexpensive to manufacture.

With these and other objects in view, the invention consists in the features of construction, combination and arrangement of parts as will be described more fully here, illustrated in the accompanying drawings which disclose the preferred embodiment of the invention, and pointed out in the appended Claim.

Nikola Tesla
In the drawings, Fig.1 is a perspective view of the engine constructed in accordance with the invention.
Free Energy Units
Fig.2 is a vertical transverse cross-section view through the compressor part of the engine.
The Inside Cylinder Block

Fig.3 is a vertical cross-sectional view through the power part of the engine.

Air Compressor Tank Section Draw
Fig.4 is a detail elevation of the crankshaft of the engine.

Fig.5 is an enlarged cross-sectional view through one of the electric heaters for the engine.

Fig.6 is a vertical, longitudinal, cross-sectional view through the air storage tank, including the equaliser. The same reference numbers are used for each individual part in every view in every drawing.

Referring to the drawings in detail, the engine in its entirety, composes a cylinder block 10 having inside it, the series of compressor cylinders 11 and the power cylinders 12. The block 10 is of the V-type and the upper ends of the cylinders are closed off by the removable heads 13 and 14 which are held in place by conventional head bolts 15. Beneath block 10 is the crank case 16, which has detachable plates 17 at opposite sides, held in place by fasteners 18, and seated so as to be leak proof. The block 10 is chambered to provide a water jacket 19 surrounding the cylinders, while at the forward end of the block are water pumps 20, circulating water through the inlet pipe 21 which leads into the jacket and the water exits from the jacket through the outlet pipe 22. Beside the pumps 20, is a fan 23 which is operated from the same belt 24 which drives the pumps.

Working inside the cylinders 11,are the reciprocating pistons 25, their rods 26 sliding through packing glands 27 and fixed to crossheads 28 which slide on their mounting guides 29 which are secured to the walls of the crank case 16. These crossheads 28 are fitted with wrist pins 30, forming a pivoting connection with the connecting rods 31, which are connected to their cranks 33 by their bearings 32. The cranks 33 form part of a counter balanced crankshaft 34, which is mounted in supports 35 attached to the crank case 16, the shaft being provided with the required bearings 36.

The inner ends of the cylinders 11 are fitted with inner end heads 37, which are provided with air intake ports 38 fitted with spring ball inlet checks 39, the air entering through passages 40 which open outside the block 10. Glands 27 are mounted in the heads 37.

The heads 13 and 37 are provided with the compressed air outlets 41 and 42, which are fitted with spring ball checks 43. The heads 13 are also provided with the central air inlets 44, which are fitted with spring checks 45. Couplings 46 attach the air outlets 41 and 42 to their outlet feed pipes 47 and 48. These pipes lead to a main conduit 49 which is located in the centre channel 50 of the block 10.

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At the rear end of the block 10, mounted on shaft 36, there is a conventional flywheel 51.

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Working inside the cylinders 12 are the pistons 52, with their piston rods 53 sliding through packing glands 54 and fixed in crossheads 55 which slide along their mounting guides 56, mounted on the inner walls of the crank case 16. The crossheads 55 have wrist pins 57 which provide a pivoting joint for the connecting rods 58 which are connected by their bearings 59 to their cranks 60 of the crank shaft 34, the inner ends of the cylinders 12 being closed by the inner heads 61 and their associated glands 54.

On the cylinders 12 are slide valve chests 62 in which are the slide valves 63, these being operated by throw rods 64 actuated by cams 65 and the valves controlling the admission and exhaust of air into and out of the cylinders 12, through the ports 66 and 67, and these valves 63 are provided with ports 68 for the delivery of air under pressure from the inlet passages 69 common to a pipe 70 coming from a compressed air storage tank 71.

The bottom of the crank case 16 is fitted with a removable plate 72 which is secured in place by fasteners 73, and when this plate is removed, it provides access to the crank shaft 34 and the bearings for the engine, as well as other parts inside the crank case.

Leading into the cylinders 11 are the passages 74 of a lubricating system (not shown). The compressed air storage tank 71 has inside it a double-check discharge nozzle 75, supported by member 76. Leading to this equaliser is an air inlet pipe 77 which connects through its valved section 78 to the compressed air reservoir 79. In the equaliser 75, are the spaced spring ball checks 80 and 81, one being for the inlet side and the other for the outlet side of the equaliser. This pipe 77 is connected with the main conduit 49, while a pipe 82 connects to pipe 70. The tank is also fitted with an automatic relief valve 83 and this valve can be of any approved type.

Placed around the pipes 70 which connect to the air passages 69 (Fig.3) are electric heating units 84 to heat the pressurised air to above freezing temperature when delivered from tank 71 to the cylinders 12. Supported on the block 10 is an electric generator 85 which is driven from the shaft 34 (Fig.2) through a belt 24 (Fig.1) and this generator is included in an electric circuit which also has the heaters 84 so that these will operate from current supplied by the generator.

The compressed air storage tank 71 with the equaliser is constructed so that it is possible to pump air into it while it contains an air pressure of 200 pounds per square inch while the compressors are only pumping against 15 pounds per square inch of (atmospheric) pressure. An outside air pressure source can be coupled with the tank to augment that pressure derived from the cylinders 11 of the engine.

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