US828111A

US828111A - Rotary air-compressor.

Info

Publication number: US828111A
Application number: US25050805A
Authority: US
Inventors: Gustav Hermansen
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-03-17
Filing date: 1905-03-17
Publication date: 1906-08-07
Anticipated expiration: 1923-08-07

Description

. PATENTED AUG. 7, 1906.

G.'HERMANSEN.

ROTARY AIR COMPRESSOR.

I APPLICATION rum) MAR.17, 1905.

2 SHEETS-SHEET 1.

- lw/Emm No. 828,111. PATENTBD AUG. 7, 1906.

- G. HERMANSEN.

ROTARY AIR OOMPRESSOR. I APPLIOATION FILED MAR. 17, 1905.

' 2 SHEETS-SHEET z.

III,

l 1 MM A/FFNEEEEE, P 5 Q INVENTEIF 4mm I azz-fw;

-' TE s ra'rns PATENT @FBIGE.

GUSTAV HERMANSEN, or ALBANY, NEW YORK.

ROTARY AIR-COMPRESSOR.

Specification of Letters Patent.

' Patented Au 7, 1906.

Application 'filed March 17,1905. Serial'No. 250,508-

tion and combination of partshereinaiter described and subse uently claimed.

Reference may e had .to the accompanying drawings, and the reference characters marked thereon, which form a part of this specification. I

Similar characters refer to similar parts in the several fi res therein. f

Figure 1 o the drawings is an end elevation of a fluid pump or compressor constructed in accordance with my invention. Fig. 2 is a vertical cross-section of the same, taken on the broken line 2 2 in Fi 3. Fig. 3 is a central vertical longitudina section of the same, taken on the broken line 3 3 in Fi s. 1 and2. Fig. 4 is a longitudinal section 0 the piston, taken on the broken line 4 4 in Fi 2.

The object of my invention is to provi e a simple, durable, and eflective pump or compressor for fluids.

In describin my invention I shall refer to it more particu arly as an air-compressing apparatus, although it is also adapted for use asa ump.

I l iave shown in the drawings and will describe the invention as applied to a sim le fluid compressor or pump operating sing y; but the apparatus shown may form one of a plurality or series of elements in a compound compressor or pump when suitably connected up with other similar elements.

Referring to the drawings, 1 is the frame of the machine containing bearings for the drive-shaft 2, which may be rotatively operated in any known manner, as by a belt and pulley. (Not shown.) U on the driveshaft is fixed a piston 3, a apted to rotate within and eccentrically of a cylinder 4,

having heads 5, adapted to bear upon the ends of the piston to make a comparatively tight oint therewith.

The c hnder is rotatively mounted by means 0 ball-bearin s 6 at each end upon a bearing;plate 7, whic is adjustably mounted upon t e frame of the machine by means of screws 8, inserted through slotted apertures 9 in the frame of the machine into said bearin plate, whereby said bearing-plates are ma e adjustable perpendicularly to the drive-shaft. Said ball-bearin s may be of any known form. The bearing-plates 7 and the heads -5 of the cylinder are provided with central apertures somewhat larger than the drive-shaft 2, which passes therethrou h. The piston is adapted to rotate within t e cylinder eccentricallyand in contact therewith, and the cylinder is adapted to be rotated by the frictional engagement therewith of the periphery of the piston. The bearing-plates 7 are adjusted upon the frame of the machine, so as to cause the cylinder to thus engage the piston with the desired degree of force to accomplish the rotative movement of the cylinder and also to make a comparativel tight joint between the piston and cylin er at such point'of contact, and when the bearing-plates are so adjusted they are lockedin position by means of the screw-bolts 8. F

. To facilitate the adjustment and add to the stability of the structure, the frame of the machine is provided with one or more lugs 10 overhanging each bearing-plate 7, through each of which lugs is inserted a screw-bolt 1 1, adapted to engage the peri hery of the bearin -plate. I have shown t e frame thusprovifled with three of such lugs and screw-bolts for each bearing-plate; but a lesser number may be employed, if desired.

As shown, the cylinder and iston are adapted for contact with each 0t er at the top of the machine, and the slots 9 in the frame of the machine are elongated vertically to permit of a downward vertical adjustment of the bearing-plate screw-bolts 8.

The piston is provided with a slot 12, extending from its eriphery inwardly approximately in a ra ial direction, which slot is adapted to receive a sliding pistonlate or abutment 13, which is adapted to e held outwardly by centrifugal force in engagement with the inner surface of the cylmder as the machine is operated. The piston is provided with one or more inletorts 14 opening through its periphery to t e space between the piston and c linder adjacent to the pistOn-plate'ononesi e thereof and with one or more outlet-ports 15 openin through its periphery to the space between t e piston and cylinder adjacent to the piston-plate on the opposite side thereof.

The inlet-ports14, of which four are shown,

extend inwardly to a common inlet-aperture 16, extending longitudinally through the body of the piston between its shaft aperture and periphery and communicating with the atmosphere through the central apertures in the cylinder-head and bearing-plate 7 and an inlet-aperture 17 in the frame of the ma chine.

Each of the outlet-ports is provided with-an automatic check-valve 16, which may be of any known form which is adapted to yleld only to pressure applied thereto from the space between the cylinder and piston, and each of said portsextends approximately radially through the body of the piston to its shaft-aperture, whereat it registers with an openin 18, leading from the periphery of the drive-s aft to a central chamber formed in said shaft, which is hollow.

. f The end of the hollow shaft is closed bya plug at 19, near which closed end the shaft is provided with one or more outlet-holes 20, communicating with an annular chamber 21,

formed in the bearing on the frame of the ma chine, which chamber'is connected by a pipe '22 with a storage-reservoir (not shown) for 1 fined becomes sufliciently compressed to .force open the check-valves 16 and escape through the outlet-ports 15 to the supplyreservoir. As the air in advance of the piston-plate is thus compressedthe space be tween the cylinder and piston in rear of the piston-plate is automatically refilled with air entering through the inlet-ports 14, which new supply of air is in like manner compressed at the next rotatlon of the piston.

Certain of the structural features of my invention are adapted for use in a rotary en- What I claim as new, and desire to secure by Letters Patent, is p 1. In a machine of the class described, the combination with a rotatively-mounted cylinder; of a iston rotatively mounted eccentrically wit 'n the cylinder in contact therewith, capable of unlimited rotative movement relatively thereto and adapted to rotate said cylinder said piston being provided with a longitudinal slot in its periphery, and

with an inlet-port in its periphery on one side of said slot, and an outlet-port in its periphery on the opposite side of said slot; a piston-plate movably mounted in said slot, and; adapted to make contact with the inner surcombination with a rotatively-mounted cylinder having a continuous interior cylindrical surface; of a rotatively-mounted driveshaft extending through enlarged apertures in the heads of the cylinder eccentrically thereto a piston fixed upon said shaft adapted to rotate eccentrically within the cylinder in contact therewith, and to rotate the cylinder by frictional engagement with its cylindrical interior surface, said piston being provided with a longitudinal slot in its periphcry, and with an inlet-port in its periphery on one side of said slot, and an outlet-portin its periphery on the opposite side of said slot; a piston-plate movably mounted in said slot,

and adapted to make contact with the inner surface of the cylinder; an automatic checkvalvecontrolling said outlet-port adapted to yield to internal pressure in the space between the cylinder and piston; means for yarying the relative eccentric positions of the cylinder and piston and means for rotating said piston.

3. In a machine of the class described, the combination with the frame of the machine having shaft-bearings; of a shaft rotatively mounted in said bearings; a pair of bearingplates adjustable upon the frame of the machine perpendicularly to said shaft and provided with enlarged central apertures through which said shaft extends; -means for securing said bearing-plates in adjusted position upon the frame of the machine; a cylinder rotatively mounted upon said bearing-plates eccentrically to said shaft; and a piston mounted upon said shaft adapted to rotate within said cylinder eccentrically thereof and in contact therewith.

4. In a machine of the class described, the

combination with the frame of the machine having shaft-bearings; of a shaft rotatively mounted in said bearings; a pair of bearingplates adjustable upon the frame of the machine perpendicularly to said shaft and provided with enlarged central apertures through which said shaft extends; means for securing said bearing-plates in adjusted position uponthe frame of the machine; a cylinder rotatively mounted upon said bearing-plates eccentrically to said shaft; by means of ball-bearings. interposed between the cylinder and the respective bearingiston mounted u on said plates; and a shaft eccentrica ly within the cylin er.

5. In a machine of the class described, the combination with the frameof the machine; of a shaft rotatively mounted thereon; a

pair of bearing-plates adjustable upon the frame of the machine perpendicularly to said shaft and provided with enlarged central apertures through which said shaft extends; lugs on said frame overhanging the peripherles of the respective bearing-plates screws inserted "through said lugs engageable with the peripheries of the respective bearingplates; a cylinder rotatively mounted upon said bearing plates eccentrically to said shaft and a piston mounted upon said shaft adapted to rotate; eccentrically within said cylinder in contact therewith.

6. In a machine of the class described, the

a combination with a rotatively-mounted cylinder having a continuous interior cylindrical surface; of a rotatively-mounted driveshaft extending through enlarged apertures in the heads of the cylinder eccentrically thereto; a piston fixed upon said shaft ada t- 1 ed to rotate eccentrically within the cylin er in -contact therewith and to rotate the cylinder by frictional. engagement with its cylindrical interior surface, said piston being pro- I vided with a longitudinal slot in its periphery, and with an inlet-port in its periphery on one side of'said slot, and an outlet-port in its periphery on the opposite side of said slot; a piston-plate movably mounted in said slot, and adapted tomake contact with the inner surface of the cylinder; an automaticallyoperated valve controlling said outlet-port; means for varying the relative eccentric positions of the cylinder and piston;

and means for rotatin said piston.

7. In amachine of 51 in combination, a pair of members each rotatively mounted and ca able of unlimited rotative movement relatlvely to the other, the

e class described, and i l same comprising a cylinder, and a cylindrical piston rotatively mounted within the cylinder eccentrically thereto incontact therewith, 'one of said members being provided with a slot and with an inlet-port on one side and an outlet-port on the opposite In testimony whereof I have hereunto set my hand this 11th day of March, 1905. 1 GUS.- HE-RMANSEN. Witnesses: j JHENRY E. STERN,

A. SANDSTROM.