US1762418A

US1762418A - Rotary force pump

Info

Publication number: US1762418A
Application number: US323936A
Authority: US
Inventors: Petersen Henry
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-12-05
Filing date: 1928-12-05
Publication date: 1930-06-10
Anticipated expiration: 1947-06-10

Description

June 10, 1930.' H. PETERSEN 1,762,418

abTARY FORCE PUMP Filed Dec. 5, 1928 2 Sheets-Sheet 1 HENRY PETERSEN.

June 10, 1930. H, PETERSEN 1,762,418

ROTARY FORCE P Filed Dec. 5, 1928 2 Sheets-Sheet 2 W im In... l Ilium.

Patented June 10, 1930 PATENT OFFICE HENRY PETERSEN, F MOUNT AUBURN, IOWA ROTARY FORCE PUMP Application filed December 5, 192 8. Serial No. 323,886.

My invention relates to certain new and useful improvements in rotary force pumps of that general type embodying an eccentrically mounted rotary element and pistons 5 which, during the rotary movement of said element, are successively centrifugally brought into contact with the inner surface of walls of the cylinder within which they are located.

among, others, to improve upon prior constructions of this general character and to provide a simple, efficient, rotary pump of few parts, those arranged in small compass and embracing a generic feature, a piston, with intersecting through passages upon one face, in which passages are disposed elements, such as rollers which are at all times so disposed as to have positive continued peripheral contact each with the adjacent roller or member. These rollers or members are so disposed that they have freedom of movement so as to reduce friction to a minimum, and as eachJouter roller in-its turn is brought into contact with the wall of the eccentric passageway, it is moved along in contact therewith throughout it course.

The piston bodymoves within its cylinder,

but the piston shaft does not extend into the Q'chamber in whichfis providedthe eccentric passageway or wall, thus (leaving the case of ,the piston head such as to be provided with intersecting passageways for the movement of the rollers or other bodies, the intermediate or center roller occupying the-space generally occupied by the end of the piston shaft in prior devices of this character. This permits of my utilization of this space usually occupi-ed by the end of the piston shaft to form the intersecting passageway in the acting face of the piston body. These passages, or what maybe termed the roller carriers in- I tersect each other at right angles, extending to the periphery of the piston body on a roller, movement, the said passages being of the same depth as the rollers or members th at, a

move therein. This not only simplifies the structure,.but permits mete-use the arrangementof the rollers or bodies herein disclosed The present invention has for an object,-

plane with the floor of the eccentric for free.

so that they shall have, at all times, direct intimate contact with each other under all conditions. The flOOI /Of the passageway and the floor of the eccentric are perfectly smooth and in alignment with each other.

The invention has for an object, among others,to provide a device of this general character which shall be strong and durable, simple in its construction, composed of comparatively few parts and those not liable to get out of order, but quickly and cheaply replaced when necessary, and a resulting structure which is capable of long continuous use without wear or necessity of attention.

Other objects and advantagesof the invention will hereinafter appear and the novel features thereof will be particularly pointed out in the appended claims.

The invention is clearly illustrated in the accompanying drawings, which, with the numerals of reference marked thereon, form a part of this specification, and in which Fig. 1 is a top plan of my improved pump with a part brolien away and portions shown in section. 7

Fig. 2 is a section on the line 2-2 of Fig. 3.

Fig. '3 is a section on the line 3-3 of Fig. 1.

Fig. 4 is an end view of the body member 50 withthe piston therein.

Fig. 5 is a similar view showing a modified form of inter-communicating passages and arrangement of contacting members.

Fig. 6 is a similar view showing another, modified arrangement.

Like numerals of reference indicate like parts throughout the several views.

Attention is called to the fact that in all of the forms shown the generic feature of continuous direct intimate contact between the rollers or elements is maintained. By this means, positive uniform movement of the parts is at all times assured to the end that the action shall be continuous, uniform and at all times dependable.

The rollers or members which are movable in the grooves or passageways of the head of the piston may be solid or may be tubular or ring-formed, as may be found most expedi- 00 ent, the resultant action being in all cases the 1 indicates the outer cylinder or casing of the device: 2 and 3 designate the inlet and outlet passages, it being understood that either one may be the inlet and the other the outlet; that is, the deviceis arranged so as to operate either way. :1

This body or cylinder 1 is provided with the tubular extension 4 to support thepiston shaft, the outer end of which shaft is designed to receive a drive pulley 5. Thls extension 4 may be fixed in position in any suitable manner; in the present mstance shown as supported in a saddle 6, having openings 7 for the reception of bolts or other means by which it may be secured in the desired position. A strap or like member 8, or a staple .bolt or the like, may be employed to firmly fix the member 4 within the saddle to prevent relative movement of the member 4; any suitable means for holding the member .4 and other parts in place may be employed. The cylinder or casing l is formed with a concentric chamber 9 in which is mounted to revolve a piston 10, the piston shaft 11' of which is disposed within the tubular extension 1, and thus the piston 10 revolves within the chamber 9, concentrically, thereof. Beyond this "chamber 9 the cylinder ris formed with an eccentric chamber 12, the inner wall 13 of which is contacted by the piston members 14,

I I the number of which may vary as herein illustrated.

These members 14 are arranged in grooves or channels 15 in the piston head 10'. In the form shown in Figs. 1 and 3, these channels 15 are arranged inthe form of a cross at right angles, that is, the channels extending from side to side in one direction are at rightangles to those extending in the otherdirection, intersecting at the center, and the center is naturally substantially in alignment with the piston shaft 11. These channelsform intermediate members 16, as clearly seen in Fig. 3,

between each two of which, one of the memzb'ers 14 is. disposed.

In the operation of the device, the outer-.

" most rollers 14 are at all timesin contact with .the wall of the eecentric passage in the member 1, While the innermost one, in this instance, the .center one, is at all times, in direct contact with the adjacent periphery of each of the other members, as clearly understood from .Hence, thereis no lost motion,

. is continuous.

but the action must be continuous and dependable.

Referring to Fig. 5, the casing or member 1 is in all respects, substantially the same as shown in Figs. 1-4, except that in lieu of the body portion of the piston being constructed to accommodate five rollers or like members, the body or face of the piston is provided with passages 17, related as shown and inter secting each other at the center. In these passageways are mounted for movement the members 18, four in number. These members may be solid as are those shown in Figs 4 14, or they may be in the nature of tubes 0 rings as shown in Fig. 5, the said members 18 being disposed so-thatthey are, at all times,

in intimate rolling engagement with each.

other. In operation, the effect is the same;

the members 18 having rolling contact with the vertical wall of the eccentric chamber of the piston head or body.

form in which the body or head of the piston is provided with a single diametrically disposed passage 19 in which are disposed memand theseare so disposed as to have three rolling engagements with each other, the outermost of'the members 20 being movable in contact with the wall of the eccentric passageway in which they travel. It will also be noted that these outer rollers or members 20 are also at all times in direct peripheral en- In Fig. 6 I have chosen toshow another,

bers 20 which may be solid or not as preferred,

gagement with the intermediate roller as will be evident from Fig. 6.

- It will beunderstood, of course, that the extension of the m ember 1 in the form shown in Figs. 4, 5 and 6, receives the shaft of the piston and that the latter is designed to be equipped wi h a pulley, the parts being securely fixed in proper position inany suitable manner.

Asthe operation in all the forms is for 5.11, 'intentsand purposes the same, the description of onewill suflice for .all. Therefore, referring to Fig. 3, supposing the power is applied to the pulley 5 and the pump started 1nto service. through the passage 3 enters the chamber 21 which communicates with the eccentric face 22'. The piston revolving in the direction of the arrow in Fig. 3, the liquid or air follows" The liquid .or'. air admitted such course, being prevented from movement in -the opposite direction by the frictional contact of the members 14 and the adjacent portion 16 of the piston head, and the liquid or airis carried along in the direction of;

the arrow (Fig.3) and is confined against exit until the member 15, shown in the positlon in Fig. 3, passes the point 23, indicated in Fig.3 whenthe liquidflor air is freetoescape through the outlet 2. This operation The succe ding members 14 and 16o'perate in the manner above described 5 so long as the pump is running. One of the noted that the members 14, have,

\ I members 14 at all times is in vent back-flow of liquid or It'will be at all times, direct peripheral rolling contact with the eccentric wall and with each other. The portions 16 of the piston head, however, do not always have contact with this eccentric wall. As seen in Fig. 3, the diametrically disposed portions 16 are alternately in contact with or out of contact with this peripheral wall. Fig.

air.

' 3 shows the two portions 16 at the top of the figure in close contact with the adjacent portion of the eccentric wall, and the intermediate portion 14 is also in'contact with such wall, so thatexit of the liquid or air at such point is efl'ectually prevented. When these parts are in this position, the other portions 16 are out of contact and somewhat removed from the adjacent portion of such eccentric wall, as seen in the lower portion of Fig. 3.

When in this position, there is no escape of air orl liquid in either direction at the points seen in the upper part of Fig. 3. This condition of things is always gradually changing as the piston revolves. The next succeeding

members

14 and 16 are brought into the position previously assumed by the .parts, so that the condition seen in Fig. 3 is practically at all times the same, and the liquid or air, is conducted in a continuous stream through the outlet tube.

The same result is obtained with the form shown in Figs. 5 and 6. The portions 24 of the piston head serve the same way, at one time closing the passage against escape of liquid or air, and each successive change brings about the same result.

In the form shown in Fig. 6, the operation is substantially the same. As seen in this view, the portions 25 of the piston head or body are shown at the upper portion of the figure as serving to close the exit, at whatever portion, being removed out of contact with the wall of the eccentric portion, and these parts constantly changing relative positions as long as the pump is operating. in this form, as well as the others, the rollers or member 20 are at all times in positive, frictional contact witheach other, and the outermost ones always in rolling shifting engagement with the eccentric wall.

Modifications in detail may be resorted to without departing from the spirit of the invention or sacrificing any of its advantages.

What is claimed as new is 1. A rotary pump comprising a casing, a piston chamber therein, an eccentric chamber, a piston rotatable in the piston chamber, said chamber having an unobstructed through passage extended transversely thereof, and members carried by the piston and each having shifting rolling contact with another and piston having portions intermediate said rollposition to preing members for intermittent contact with the wall of the eccentric chamber.

2. A rotary pump embodying a casing with concentric portion and an eccentric chamber, a piston in the chamber having intersectin transversely thereof, and

members occupying said passageways and disposed for continual shifting rolling contact each with anwith concentric portion and an eccentric.

chamber, a piston in the chamber having through unobstructed intersecting passageways and members occupying said passageways and disposed for continual shifting rolling contact each with another and with the wall of the eccentric chamber, the'piston having portions serving as cut olis for said ports, with adjacent walls of which the rolling members have continued engagement.

5. In a rotary pump having a passageway therein, extended transversely therethrough, unobstructed throughout its length, revoluble members in said passageway, said revoluble members having at all times direct intimate rolling contact each with another and with the opposed walls of said passageway.

6. A. rotary pump comprising a casing having a concentric chamber therein and an eccentric chamber, a piston rotatable in said chambers and having intersecting passages extending transversely unobstructedly therethrough, outer members and an intermediary member carried in said intersecting passages, the outer members having shifting rolling contact with said intermediary member and with the wall of the eccentric chamber.

7. -A rotary pump comprising a casing having a concentric chamber therein and an ec centric chamber, and a piston rotatable in said chambers and having a passage extending transversely therethrough, outer members and an intermediary member movable in the said passage, the outer members having shifting rolling contact with said intermediary member and with the wall of the eccentric chamber.

l 8. A pump comprising a cylinder formed with a concentric chamber, a piston revoluble .within said cylinder, concentric thereof,

g 0 unobstructed through passageways extended through passages unobstructed from end to end, and rolling members disposed in said passages at all times in direct contact with the wall of said eccentric chamber and each with the adjacent periphery of'another.

In testimony whereof I afiix, my signature.

HENRY PETERSEN.