US1142734A - Pump. - Google Patents
Pump. Download PDFInfo
- Publication number
- US1142734A US1142734A US76461613A US1913764616A US1142734A US 1142734 A US1142734 A US 1142734A US 76461613 A US76461613 A US 76461613A US 1913764616 A US1913764616 A US 1913764616A US 1142734 A US1142734 A US 1142734A
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- US
- United States
- Prior art keywords
- pistons
- pump
- piston
- grooves
- ribs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
Definitions
- This invention comprehends improvements in pumps and relates more. particularly to those of the type which employ a plurality of intermeshing rotary pistons.
- the primary object of the invention resides in the provision of a piunp of this type having peculiarly shaped pistons which may be rotated in different directions depending upon the ports into which it is desired to draw and discharge a fluid.
- the pump will work equally as well when used for pumping air or gas as when. used for pumping water or some other liquid, and may also be used as a vacuum pump.
- the invention also" aims to provide a rotary piston for pumps which shall be of extremely simple construction, strong, dur'ahle, and of such construction as to provide a very efficient pump.
- Figure 1 is a bottom view of my improved pump, the casing being partly broken away and partly in section, and the piston being shown in elevation
- Fig. 2 is a vertical sectional view taken on the plane of line .2-2 of Fig. 1
- Fig. 3 is a detail view in elevation, of one of the pistons.
- numera1s,.5 designates the casing closed at its ends by the walls 6 and 7 and provided upon its lower side adjacent its ends with the ports 8 and 9 and upon its upper side centrally of its ends with a port 10.
- the pistons are identical in construction and are formed, as clearly shown in Fig. 3, where it will be seen that one half of the piston is formed with the right hand spiral grooves 14 which run half way around the piston and which extend from the center to one end thereof. The other end of the piston is formed with the left hand spiral grooves 15, which connect at their inner ends with the grooves 14.
- the grooves 14 and 15 form acute angles with the longitudinal axis of the piston and appear arouately shaped in cross-section.
- the grooves 14 upon one half of the piston form the.
- the piston might be considered as being formed of a bar having concave sides and rounded edges. one half of the bar being twisted in one direction and the other half being twisted in the other direction. Each half is turned'through an are of 180 so that the ribs and grooves will extend half way around the piston.
- walls 6 and 7 closely engage the ends of the pistons so as to prevent leakage from the grooves at the outer ends thereof.
- a pump including a pair of intermeshing pistons, each of which comprises a relatively thin body, said bodybeing extended in the line of a compound curve for one-half of its length in one direction, and for the remainder of its length in the opposite direction to form a pair of opposite spiral ribs, and curved edges formed on the ribs to facilitate the intermeshing of the pistons, the line of curve at the terminal of each rib being parallel with the axis of the body and in the same diametrical plane.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
0. W. SIDWELL. PUMP.
APPLICATION FILED APR. 30, 1913.
Patented June 8, 1915.
W. SEDWELII, OF DELTA, PENNSYLVANIA.
PUMP.
To all whom it may concern: '1
Be it known that I, Gnarmns W. SmwELL, a citizen of the United States, residing at Delta, in the county of York and State of Pennsylvania, have invented certain new and useful Improvements in Pumps; and I. do hereby declare the following to be a full,
' clear, and exact description of the invention, suclras will enable others skilled in the art to which it appertains to make and use the same.
This invention comprehends improvements in pumps and relates more. particularly to those of the type which employ a plurality of intermeshing rotary pistons.
The primary object of the invention resides in the provision of a piunp of this type having peculiarly shaped pistons which may be rotated in different directions depending upon the ports into which it is desired to draw and discharge a fluid.
Although the term ffiuid will be used throughout the specification, it will be understood that the pump will work equally as well when used for pumping air or gas as when. used for pumping water or some other liquid, and may also be used as a vacuum pump.
The invention also" aims to provide a rotary piston for pumps which shall be of extremely simple construction, strong, dur'ahle, and of such construction as to provide a very efficient pump.
With these and other objects in'view, as will become more apparent as the description procecds, the invention consists in certain novel features of construction, combi- 4 nation, and arrangement of parts, as will be hereinafter described and claimed.
.For a complete understanding of my invention, reference is to be had to the following description and drawings, in which,
Figure 1 is a bottom view of my improved pump, the casing being partly broken away and partly in section, and the piston being shown in elevation, Fig. 2 is a vertical sectional view taken on the plane of line .2-2 of Fig. 1, and, Fig. 3 is a detail view in elevation, of one of the pistons.
Referring in detail to the drawings by numera1s,.5 designates the casing closed at its ends by the walls 6 and 7 and provided upon its lower side adjacent its ends with the ports 8 and 9 and upon its upper side centrally of its ends with a port 10. Dis- Specification of Letters Patent. Application tiled Apr-i180, 1913. Serial No. 764,616.
other will be rotated thereby.
accompanying A i Patented line 8, 1915.
posed within the casing and extending longitudinally thereof, are the rotary pistons,
generally designated 11 and 12, having the stub shafts-or trunnions 13 extending longltudinally from their ends through the walls 6 and 7, which form bearings.
The pistons are identical in construction and are formed, as clearly shown in Fig. 3, where it will be seen that one half of the piston is formed with the right hand spiral grooves 14 which run half way around the piston and which extend from the center to one end thereof. The other end of the piston is formed with the left hand spiral grooves 15, which connect at their inner ends with the grooves 14. The grooves 14 and 15 form acute angles with the longitudinal axis of the piston and appear arouately shaped in cross-section. The grooves 14 upon one half of the piston form the.
right hand spiral ribs 16 and the. grooves 15 upon the other half of the piston form the left hand spiral ribs 17. The tops of the ribs are essentially semicircular. as
' shown in Fig. 2.- The piston might be considered as being formed of a bar having concave sides and rounded edges. one half of the bar being twisted in one direction and the other half being twisted in the other direction. Each half is turned'through an are of 180 so that the ribs and grooves will extend half way around the piston.
When the pistons are assembled within the casing 5, the right hand grooves and ribs of one piston are opposed to the left hand grooves and ribs upon the other pistonv and when thus arranged, the pistons mesh with one another so when one is driven the This fact obviates the necessity of driving positively more than one of the pistons. Necessary power may be applied to one of the trunmons 13.
From the foregoing description taken in connection with the accompanying drawings, it will be seen that I have provided a pump having intermeshing rotary pistons of extremely simple construction, which will operate so as to draw a fluid into the casing and discharge the same therefrom. The construction which I have shown may be used as a pump, fan or as a motor. If a fluid is forced into the port 10 under pressure and allowed to discharge through the ports 8 and 9, the pistons will be driven and act as rotors. The same action, in a reverse direction, will take place when the fluid is forced into the ports 8 and 9 and allowed to discharge through the port 10.
It is to be understood that while I have shown and described the preferred embodiment of my invention, I do not wish to be limited to this exact construction, combination, and arrangement of parts, but may make such changes as will fall within the spirit and scope of the invention.
Having thus described my invention, What I claim is A pump including a pair of intermeshing pistons, each of which comprises a relatively thin body, said bodybeing extended in the line of a compound curve for one-half of its length in one direction, and for the remainder of its length in the opposite direction to form a pair of opposite spiral ribs, and curved edges formed on the ribs to facilitate the intermeshing of the pistons, the line of curve at the terminal of each rib being parallel with the axis of the body and in the same diametrical plane.
In testimony whereof I aflix my signature in presence of two witnesses.
CHARLES W. SIDWELL.
Witnesses:
W. W. SELLERS, H. N. LLOYD.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US76461613A US1142734A (en) | 1913-04-30 | 1913-04-30 | Pump. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US76461613A US1142734A (en) | 1913-04-30 | 1913-04-30 | Pump. |
Publications (1)
Publication Number | Publication Date |
---|---|
US1142734A true US1142734A (en) | 1915-06-08 |
Family
ID=3210827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US76461613A Expired - Lifetime US1142734A (en) | 1913-04-30 | 1913-04-30 | Pump. |
Country Status (1)
Country | Link |
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US (1) | US1142734A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2622787A (en) * | 1947-07-16 | 1952-12-23 | Jarvis C Marble | Helical rotary engine |
DE3718866A1 (en) * | 1987-06-05 | 1988-12-22 | Langer Bsa Maschf | PUMP |
US20080056927A1 (en) * | 2006-09-05 | 2008-03-06 | Herold & Co. Gmbh | Pump |
-
1913
- 1913-04-30 US US76461613A patent/US1142734A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2622787A (en) * | 1947-07-16 | 1952-12-23 | Jarvis C Marble | Helical rotary engine |
DE3718866A1 (en) * | 1987-06-05 | 1988-12-22 | Langer Bsa Maschf | PUMP |
US20080056927A1 (en) * | 2006-09-05 | 2008-03-06 | Herold & Co. Gmbh | Pump |
DE102006041633A1 (en) * | 2006-09-05 | 2008-03-13 | Herold & Co. Gmbh | pump |
EP1898096A3 (en) * | 2006-09-05 | 2010-04-28 | Herold & Co. GmbH | Lobe pump |
US7766635B2 (en) | 2006-09-05 | 2010-08-03 | Herold & Co. Gmbh | Rotary pump having sinusoidal sealing lines |
CN101139989B (en) * | 2006-09-05 | 2011-10-12 | 黑罗尔德有限公司 | Pump |
RU2463481C2 (en) * | 2006-09-05 | 2012-10-10 | Герольд унд Ко. Гмбх | Pump |
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