US 2137649 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
Nov. 22, 1938.
COMPRESSOR AND SIMILAR DEVICE Filed 001;. 23, 1936 2 Sheets-Sheet l INVENTCR.
gm/ ama 2 d.
w. J. HILL-IARD 2,137,649
COMPRESSOR AND SIMILAR DEVICE Filed Oct. 23, 193.6 2 Sheets-Sheet 2 INVENTOR.
Patented Nov. 22, 1938 UNITED STATES PATENT j OFFl-CE 2,1a7,c4e g COMPRESSOR AND SIMILAR. DEVICE William J. Hilliard, st. omit, Mo.
Application October 23, 1936, Serial No. 107,201
This invention relates to power driven devices, such for instance as compressors, although not necessarilylimited thereto, as the essence of the invention is applicable to power producing devices 5 such as engines and the like, and mechanisms transmitting power from one part to another.
An essential object of the invention is the provision of means fo'r converting rotary motion into reciprocating motion, and, reciprocating motion into rotary motion.
A further object of the invention is the provision of means for oscillating the machine element which reciprocates during its reciprocating movement.
' A further object ofthe invention is the provision of means for imparting oscillating motion to a reciprocating member.
A further object of the invention is the provision of means for effectively lubricating the mov- 20 ing parts.
A still further object of the invention resides in the provision of a mechanism which will be simple in construction, and which can be used either for the purpose of producing power, or employing power as a prime mover therefor.
With the above and'other objects in view, the invention consists in the novel features of construction, arrangement and combination of parts hereinafter more fully described and finally pointed out in the claims hereto appended.
Referring to the accompanying drawings forming a part of this specification, wherein like characters of reference denote similar parts throughout the several views:
Fig. 1 is a vertical sectional view of a compressor embodying the features of my invention.
Fig. 2 is a horizontal sectional view of the device taken through the cylinder and the reciprocating member with the reciprocating member in its outer position.
Fig. 3 is a horizontal sectional view of the device taken through the cylinder and midway of the reciprocating member in itsJinner position.
Fig. 4 is a side elevation of the reciprocating member showing the race formed on the outer face thereof.
Fig. 5 is a vertical sectional view showing the driving member and the torque member in operative positions.
.Fig. 6 is a side elevation of the oscillating drive member which is also a duplicate of the oscillat ing torque member.
Fig. 7 is a side elevation of the oscillating drive member from another side thereof.
' Fig. 8 is a plan view looking at one side of the rotary member.
Fig. 9 is a plan view looking at the opposite side of the rotary member. v
In carrying out the invention, in one embodiment thereof only, which embodiment is illustrated asa compressor, I employ a suitable base member I which can be in the form of a casing and adapted to house an electric motor designated generally as 2, the armature shaft 3 of which is supported in suitable bearings designated 4.
A suitable cylinder 5 is supported above the casing I by means of suitable supporting legs 6 which are suitably secured to the casing l. The cylinder is preferably closed at its outer end and open at its inner end, and is illustrated as of the vertical type, although it is apparent that it can be of the horizontal type. The cylinder 5 is provided in the wall thereof with a short longitudinal groove 1 serving as an'outlet, which is fully open to the interior of the cylinder, and also provided with a relatively long passage 8 which is open at its ends to the interior of the cylinder and has outer and inner end ports 9 and Ill, respectively. An intake pipe II is secured to the cylinder adjacent the inner end port I0 and an exhaust or delivery pipe I2 is connected to the cylinder opposite the inner end port ID.
A suitable reciprocable'member l3, such as a piston, in one embodiment thereof, is mounted within the cylinder 5, and it is provided with a central bore l4 open tothe inner end thereof. The 'reciprocatihgmember I3 is provided at opposite ends withsuitable piston rings, designated I5 and IS. The reciprocating member !3 can, as is manifest, be actuated to serve either as a driven member or a driving member, dependent upon what class of a device it is used in connection with.
In the embodiment shown, the reciprocating member I3 is provided on its peripheral face with ashort internal facial groove l1 disposed longitudinally thereof. The opposite side of the reciprocating member I3 is provided with a relatively long passage 18 terminating at its outer end in an intake port l9 and at its inner end in an outlet port 20. A suitable endless race formed of two curved grooved stretches 2| and 22, is formed on the peripheral face of the reciprocating member l3 with one end of each stretch meeting with the other stretch, out of interference with the recess l1 and the passage l8 and its ends [9 and 2B, and is so designed as to receive the elongated end 23 of a cylindrical body 24 serving as torque member andmounted to oscillate in a transverse bore 25 in the wall of the cylinder. The body 24 is backed by means of a closure plug 26 with a ball 21 therebetween, Reciprocating and oscillating movement of the member l3 serves to oscillate the torque member. This arrangement serves to impart oscillating movement to the piston during reciprocating movement thereof.
The means for imparting reciprocating movement to the member l3 embodies a suitable rotatable member 28, which in one embodiment thereof, is shown as tubular or sleeve like in form, having a longitudinal passage 29, and, which. is suitably secured at its inner end to one end of the armature shaft 3 of the motor 2, so, as to rotate therewith. The rotary member 28 can, as is manifest, be actuated to serve either'as a driving member or a driven member, dependent upon,
what class of device it is used in connection with. The rotary member 28 projects into the bore- M- of the reciprocating member l3, and is, provided upon its peripheral face with an elongatedendless groove fashioned to serve as a race. The end turns 30 of the race are arcuate inshape and they aredisposed in suitably spaced relation on one sideonly of the rotary member 28. The stretches 3| and 32 connecting the end turns 38 of the race are spirally fashioned and they cross or intersect each other intermediate the end turns 30 on the opposite side of the rotary member 28 from that on which the, end turns30 of the race are formed. Thus, viewing the, race from, a. plan standpoint, if flattened out, it will appear as a figure eight running, longitudinally'of theI rotary member 28 so that the member 28 can rotate, in either direction, as desired. The race. stretches connecting the end turns 38,,it will be apparent, serves as gradual right and left hand grooved stretches.
The race formed on the rotary member 28 is in the nature of av recessed or grooved race track with the exception that both end turns 38 are preferably of equal size and shape and formed on one side of the rotary member 28 and the spiral stretches 3| and 32 cross or intersect midway the end turns 30 on the, opposite side of the rotary member 28.
A drive member including a, cylindrical body 33 and a narrow elongated, tongue 34 formed on one end thereof, serves as a: drive, connection, between the reciprocating and rotary members l3 and 28, respectively. The body portion 33 ofthe. drive connection is mounted in a. suitably dimensioned transverse bore 35 in the wall of'the reciprocating member l3 and is backed by a suitable closure member 36, and a ball 31 therebetween, soas to be free to oscillate in the bore 35. The tongue end 34 of the body 33 engages and rides in the race on the rotary member 28 and during rotation of the member 28. it travels in the race and due to the curvature of the race walls, oscillating movement is imparted to the body 33 of the drive member and its projecting tongue 34.
It. will be apparent that one complete revolution of the rotary member 28 will impart one complete outward stroke to the reciprocating member I3, and that a second revolution of the member 28 in the same direction will. impart an inward or return stroke to the reciprocating member l3.
In order to. efficiently lubricate the cylinder wall, the reciprocating member and the rotary member, I provide the inner end of the rotary member, when tubular or sleeve like in structure, with a seriesof suitable openings 38 at a point below the inner end of the cylinder 5, thus, when lubricant is contained within the hood to an elevation suflicient to enter the openings 38, the interior of the rotary member 28 serves as a well 39 so that during the outward stroke of the reciprocating member 13 lubricant is sucked through the rotary member 28 and into the chamber 40 formed between the outer end of the rotary member and the head of the reciprocating member l3, which lubricant upon the inward stroke of the reciprocating member [3, isthen forced under pressure out of the openings 38 into the hood chamber 41 surrounding the cylinder 5, and,
in addition thereto rotation of the rotary member 28. imparts rotary motion to a suitable disc 42 secured to the, rotary member 28 which rides in engagement with the case I for circulating lubri-' cant; by centrifugal force within the hood and onto the, cylinder and its associated parts. The wall of the cylinder can be provided with a series of suitable openings 43=v for additionally feeding the wall of the cylinder with lubricant.
When the rotary and reciprocating members l3 and 28 are used in a compressor construction, as shown, or in a similar construction such as a pump or explosive engine, fluid to be compressed is taken into the compression chamber of the cylinder between the head thereof and the head of the reciprocating. member through intake pipe H, facial groove I! on thereciprocating member l3 and the cylinder passage 8 immediately after the, starting of the, outward stroke of the reciprocating member I3v and compressed during; the remainder of the outward stroke. The compressed fluid is discharged or exhausted during the first part of the return or inward stroke of the reciprocating member, the, discharge being through the cylinder groove 1, the passage HIV in the reciprocating member and the outlet pipe l2.
It will be apparent from the foregoingdescription read in connection with the drawings, that I provide a simple means for converting. rotary motion into reciprocating motion, and vice-versa; that this feature is adapted to other devices than that illustrated; that I provide novel means for imparting oscillating movement to the reciprocating member; that I provide novelmeans of lubricating the moving parts and that either the rotary or the reciprocating members can be actuated to serve asa prime mover for the other.
The many advantages of the herein described inventionv will readily suggest themselves to those skilled in the art to which. it appertains.
From the foregoing description, it is evident that. a simple device for this purpose has been disclosed, but it is to be understood that I do not desire to restrict, or limit myself to the very details of the construction shown and described, which is merely illustrative, it being obviousthat changes, not involving the exercise. of invention, may be made without conflicting or departing from the spirit of the invention within the scope of the appended claims.
What I claim is:
1. In combination, a cylinder, of a rotary member having an endless way formed with its end turn disposed upon one side of the member and its stretches intersecting each other midway the end turns on the other side of the member, a member reciprocably mounted upon the rotary member, a drive member including a cylindrical body having a transverse tongue connecting said firstmentioned members, and said'drive connection being mounted to oscillate between the first mentioned members during their respective movements.
2. A device as defined in claim 1, including oscillating means for imparting oscillating movement to the reciprocating member during reciprocating movement thereof.
3. In combination, a cylinder provided with a valve controlled inlet and a valve controlled outlet intermediate the ends of the cylinder, a member mounted for reciprocation in said cylinder, a member mounted for rotation relative to and in unison with the reciprocating member, a drive member connecting the rotary and reciprocating members and so formed and arranged as to oscillate therebetween, and means between the cylinder and the reciprocating member for imparting oscillating motion to the reciprocating member during movement thereof.
l. A device of the character defined in claim 3, including means so formed and arranged relative to the cylinder, reciprocating member and rotary member to take a charge of lubricant into the reciprocating member through the rotary memher during outward movement of the reciprocating member and to set up a lubricant spray during inward movement of the reciprocating member.
5. In a compressor, the combination of a base including a casing, a leg supported cylinder secured to the casing, said cylinder having a closed outer end and open inner end, the inner end being spaced from the casing by means of the legs, an electric motor disposed within the casing, bearings mounted in apertured bosses formed as a part of the casing and through which bearings the motor armature shaft passes, a sleeve like rotary member having peripheral openings adjacent its inner end, said rotary member being secured at its inner end to one end of the armature shaft and in axial alignment with the shaft so that the end of the shaft serves asa closure for the inner end of the sleeve like rotary member, a piston mounted for reciprocation within the cylinder and having telescopic connection with the rotary sleeve like member, an endless race formed with its end turns disposed upon one side of the rotary member and its stretches spirally formed and intersecting each other on the opposite side of the rotary member, a drive member connecting the piston and the rotary member, said drive member being so formed and arranged relative to the piston and rotary members as to engage in the race and oscillate between the piston and rotary members during movements thereof, means for imparting oscillating movement to the piston during reciprocating movement thereof, intake and discharge passages for the cylinder controlled by the oscillation and reciprocation of the piston, a hood encasing the cylinder and secured at its inner end to the casing to form a chamber for the reception of a lubricant, a disc mounted for engagement with the casing and secured to the rotary member for rotation therewith, and said piston during the outstroke thereof sucking lubricant through the sleeve like rotary member into the piston and spraying the lubricant under pressure within the hood during the instroke of the piston.
WILLIAM J. HILLIARD.