US2625885A - Ink pump - Google Patents
Ink pump Download PDFInfo
- Publication number
- US2625885A US2625885A US13042A US1304248A US2625885A US 2625885 A US2625885 A US 2625885A US 13042 A US13042 A US 13042A US 1304248 A US1304248 A US 1304248A US 2625885 A US2625885 A US 2625885A
- Authority
- US
- United States
- Prior art keywords
- squeegee
- groove
- rotor
- pump
- chamber
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/02—Ducts, containers, supply or metering devices
- B41F31/08—Ducts, containers, supply or metering devices with ink ejecting means, e.g. pumps, nozzles
-
- 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
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
- F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
- F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
- F04C2/1075—Construction of the stationary member
-
- 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
- F04C3/00—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type
- F04C3/02—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type the axes being arranged at an angle of 90 degrees
-
- 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
- F04C5/00—Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently deformable
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S417/00—Pumps
- Y10S417/01—Materials digest
Definitions
- This invention relates to pumps and is particularly useful in the pumping of liquidsin minute closely controlled quantities such as is necessary in the feeding of ink to'a printing machine.
- Fig. '1 isan enlarged longitudinal sectional view of a preferred embodiment of the pump :of the invention.
- Fig. 2 is al'longitudinal sectionalview taken on the line 22 of Fig. 1.
- Fig. 3 is a cross sectional view taken on the line 3-3 of Fig. 1.
- Fig. 4 is a cross sectional view taken'on the line 4-4 of Fig. 1.
- the invention is therein shown as embodied in a pump I and a body having a bearing l2 and having a cap I3 secured thereto by screws I4.
- the bearing [2 has a bore 2
- a tapped hole 24 for admitting liquid to the pump.
- a tapped hole 25 Formed in the cap
- a squeegee 32 Shaped to fit the hole 30 and adapted to be inserted inwardly in this hole is a squeegee 32, the latter having a ferrule 33 to permit pressure to be applied thereto to effectively push said squeegee inwardly from said hole 33 into the chamber 2
- the squeegee 32 is preferably of relatively soft rubber with a durometer hardness of about 30 although variations in hardness, within a considerable range, are permissible.
- the pump It has a rotor 40 formed integral with a shaft 4
- the cylindrical peripheral surface of the rotor 40 has a single pitched helical groove 42 formed therein.
- This groove has a rounded cross sectional contour and is sufliciently shallow so that only a medium amount of pressure need be applied by the screw 34 to the squeegee 32 to cause the latter to conform with the peripheral surface of the rotor 43 including a portion of the latter occupied by the groove 42 and to remain in such conformation with said surface when the rotor 43 is rotated.
- This end of the groove 42 is in constant communication with the suction channel 42, and increasing the length of the closed portion of groove 42 communicating with this suction channel, sucks liquid from said channel into the suction end of said groove.
- the pump I is especially useful in pumping liquids in small precisely measured amounts such as is required. in feeding ink to a printing or stamping machine.
- is usually equipped with a ratchet wheel by which this shaft and the rotor 40 are turned through a predetermined small angle each time it is desired to operate the pump H] to feed ink to the printing machine.
- This particular use for the pump I9 is mentioned for illustrative purposes only as it is applicable to a wide variety of uses.
- a body providing a cylindrical chamber having spaced inlet and outlet openings and having a hole extending radially therefrom; a cylindrical rotor closely fitting said chamber and rotatably mounted therein; and a squeegee member of soft resilient rubber like material pressurally confined within said hole to expansively engage in fluid tight relation the peripheral surface of said rotor, there being a shallow helical groove formed in said surface and extending entirely around said rotor so that two turns of said groove simultaneously underlie said squeegee, said groove having an arcuate cross section permitting said squeegee to extend into said groove to form a fluid tight dam in each turn of said groove underlying said squeegee, and permitting the locations of said dams to shift axially while said dams continue to dam said groove as said rotor rotates in said chamber, due to the resilient flow of the material of said squeegee and without bodily movement of the latter.
- said body includes a wall enclosing one end of said cylindrical chamber and having a bearing bore concentric with said chamber, and a second wall closing the opposite end of said chamber, there being annular recesses formed at the juncture of said end walls with the opposite ends of said chamber, said recesses communicating respectively with said inlet and outlet chamber openings, and a shaft journaled in said bearing bore and united with said rotor for transmitting rotary motion to said rotor.
Description
Jan. 20, 1953 I J, MUMMA 2,625,885
INK PUMP 2 SHEETS-SHEET 1 Filed March 4, 1948 1'0 5/ w/ aa- 50 2 Q 52 I A 60 I 42 I! "I I I I J I J41 I 1' HHROLO MUM/I119 INVENTOR ATTORNEY Patented Jan. 20, 1953 INK PUMP Harold J. Mumma, Riverside, Calif assignor to Food Machinery and Chemical Corporation, a
corporation of'Delaware Application. March 4, 1948, Serial No. 13,042
3 Claims. (Cl. 103-122) This invention relates to pumps and is particularly useful in the pumping of liquidsin minute closely controlled quantities such as is necessary in the feeding of ink to'a printing machine.
It is an object of this invention to provide a simple, novel and inexpensive precision pump.
Themanner of accomplishing the foregoing object as Well as further objects and advantages will be made manifest in the following description taken in connection with the accompanying drawings in which:
Fig. '1 isan enlarged longitudinal sectional view of a preferred embodiment of the pump :of the invention.
Fig. 2 is al'longitudinal sectionalview taken on the line 22 of Fig. 1.
Fig. 3 is a cross sectional view taken on the line 3-3 of Fig. 1.
Fig. 4 is a cross sectional view taken'on the line 4-4 of Fig. 1.
Referring specifically to the drawings, the invention is therein shown as embodied in a pump I and a body having a bearing l2 and having a cap I3 secured thereto by screws I4.
The bearing [2 has a bore 2|] which is counterbored to provide a cylindrical pump chamber 2 I, the latter having annular radial channels or recesses 22 and 23 at its opposite ends.
Formed in the body H, and communicating with the channel 22, is a tapped hole 24 for admitting liquid to the pump.
Formed in the cap |3 and communicating with the channel 23, for the purpose of leading away liquid discharged from said pump, is a tapped hole 25.
Formed in the cylindrical surface of the chamber 2| and extending radially therefrom in that portion of the body I disposed between the channels 22 and 23 is an elongated squeegee hole 30 which connects with a tapped hole 3|.
Shaped to fit the hole 30 and adapted to be inserted inwardly in this hole is a squeegee 32, the latter having a ferrule 33 to permit pressure to be applied thereto to effectively push said squeegee inwardly from said hole 33 into the chamber 2| by the screwing of a thumb screw 34 inwardly into the tapped hole 3|.
The squeegee 32 is preferably of relatively soft rubber with a durometer hardness of about 30 although variations in hardness, within a considerable range, are permissible.
The pump It has a rotor 40 formed integral with a shaft 4|, the rotor being cylindrical and formed to closely fit the chamber 2| and be rotatable therein, the shaft 4| journalling in the bore 23 of the bearing l2 and being employed for rotation of the rotor 40 in said chamber.
The cylindrical peripheral surface of the rotor 40 has a single pitched helical groove 42 formed therein. This groove has a rounded cross sectional contour and is sufliciently shallow so that only a medium amount of pressure need be applied by the screw 34 to the squeegee 32 to cause the latter to conform with the peripheral surface of the rotor 43 including a portion of the latter occupied by the groove 42 and to remain in such conformation with said surface when the rotor 43 is rotated.
Referring .to Fig. '2 it may be noted that the conformation of the squeegee 32 with the rotor closes the groove 42 where this groove is disposed adjacent to the squeegee. This closure remains in the plane of the squeegee while the rotor 40 turns in the chamber 2|. The helical character of the groove 42 however causes a continuous leftward progression of those portions of this groove which are successively disposed upwardly in the plane of the squeegee. Dams 60, formed by the rubber of the squeegee 32 expanding downwardly, extend into and close these upwardly disposed portions of groove 42. As the locations of the latter progress leftward these dams progress along the plane of the squeegee by a sort of wave movement in the rubber. Dams thus effect a continuous closure of those portions of groove 42 which are successively presented upwardly in the plane of the squeegee 32 within the length of the latter.
Thus, after a dam 60 has initially formed at the right end of squeegee 32 to seal off the adjacent portion of groove 42, subsequent rotation of the rotor increases the length of that portion of the groove 42 which is located between this dam and the right end of the groove 42.
This end of the groove 42, of course, is in constant communication with the suction channel 42, and increasing the length of the closed portion of groove 42 communicating with this suction channel, sucks liquid from said channel into the suction end of said groove.
This suction continues with the progress leftward of this particular squeegee dam until a new squeegee dam is formed from the right end of the squeegee 32. Such a dam, shown forming at the right in Fig. 2, will close off the portion of the groove 42 receiving this dam as soon as the rotor 43 has been turned another in the direction of the arrow encircling shaft 4|.
With the formation of such a new dam at the right end of the squeegee 32, the suction process above described starts again and the liquid trapped between the two dams is merely conveyed leftward and discharged from the left end of the groove 42 into the channel 23. Thus, a constant flow of liquid is pumped through the groove 42 from the suction channel 22 into the discharge channel 23 equal to the displacement of a single turn of the helical groove 42 for each revolution of the rotor 40.
The pump I is especially useful in pumping liquids in small precisely measured amounts such as is required. in feeding ink to a printing or stamping machine. When so used, the shaft 4| is usually equipped with a ratchet wheel by which this shaft and the rotor 40 are turned through a predetermined small angle each time it is desired to operate the pump H] to feed ink to the printing machine. This particular use for the pump I9 is mentioned for illustrative purposes only as it is applicable to a wide variety of uses.
The claims are:
1. In a pump the combination of: a body providing a cylindrical chamber having spaced inlet and outlet openings and having a hole extending radially therefrom; a cylindrical rotor closely fitting said chamber and rotatably mounted therein; and a squeegee member of soft resilient rubber like material pressurally confined within said hole to expansively engage in fluid tight relation the peripheral surface of said rotor, there being a shallow helical groove formed in said surface and extending entirely around said rotor so that two turns of said groove simultaneously underlie said squeegee, said groove having an arcuate cross section permitting said squeegee to extend into said groove to form a fluid tight dam in each turn of said groove underlying said squeegee, and permitting the locations of said dams to shift axially while said dams continue to dam said groove as said rotor rotates in said chamber, due to the resilient flow of the material of said squeegee and without bodily movement of the latter.
2. A combination as in claim 1 in which said body includes a wall enclosing one end of said cylindrical chamber and having a bearing bore concentric with said chamber, and a second wall closing the opposite end of said chamber, there being annular recesses formed at the juncture of said end walls with the opposite ends of said chamber, said recesses communicating respectively with said inlet and outlet chamber openings, and a shaft journaled in said bearing bore and united with said rotor for transmitting rotary motion to said rotor.
3. A combination as in claim 1 in which said hole is connected with the exterior of said body by a threaded bore; a ferrule covering the outer end of said squeegee; and a screw screwed into said threaded bore and engaging said ferrule to place a positive unyielding pressure on saidsqeegee causing said squeegee to flow into those portions of said helical groove underlying said squeegee.
HAROLD J. MUMMA.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,690,728 Jaworowski Nov. 6, 1928 1,874,667 Wada Aug. 30, 1932 1,889,822 Clapp, et a1. Dec. 6, 1932 2,015,123 Pennell Sept. 24, 1935 2,368,789 Tucker Feb. 6, 1945 FOREIGN PATENTS Number Country Date 72 Great Britain 1854 363,148 Italy Sept. 20, 1938
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13042A US2625885A (en) | 1948-03-04 | 1948-03-04 | Ink pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13042A US2625885A (en) | 1948-03-04 | 1948-03-04 | Ink pump |
Publications (1)
Publication Number | Publication Date |
---|---|
US2625885A true US2625885A (en) | 1953-01-20 |
Family
ID=21758010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13042A Expired - Lifetime US2625885A (en) | 1948-03-04 | 1948-03-04 | Ink pump |
Country Status (1)
Country | Link |
---|---|
US (1) | US2625885A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3194488A (en) * | 1962-09-10 | 1965-07-13 | Goetzewerke | Sealing bar for rotating piston engines |
US3652192A (en) * | 1969-01-16 | 1972-03-28 | Lederle Pumpen & Maschf | Sealed conveying apparatus |
US3771901A (en) * | 1971-03-16 | 1973-11-13 | Alfa Laval Ab | Rotary pump |
US4017208A (en) * | 1975-06-13 | 1977-04-12 | The United States Of America As Represented By The Secretary Of The Navy | Two-way fluid meter pump |
US4103759A (en) * | 1976-03-09 | 1978-08-01 | Anschutz & Co. G.M.B.H. | Lubricating system for an antifriction bearing |
US4183416A (en) * | 1978-08-18 | 1980-01-15 | Dresser Industries, Inc. | Cutter actuated rock bit lubrication system |
US4280338A (en) * | 1979-11-29 | 1981-07-28 | General Motors Corporation | Rotatable flexible drive shaft with noise abatement |
FR2479916A1 (en) * | 1980-04-03 | 1981-10-09 | Gd Spa | DISPENSING APPARATUS FOR VISCOUS MATERIALS |
NL2003270C2 (en) * | 2009-07-23 | 2011-01-25 | Sara Lee De | Pump for handling a fluid substance. |
DE19852181B4 (en) * | 1998-11-12 | 2012-01-12 | Verschleiß-Technik Dr.-Ing. Hans Wahl GmbH & Co. | Screw conveyor for an eccentric screw pump |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1690728A (en) * | 1927-06-16 | 1928-11-06 | Joseph F Jaworowski | Rotary pump |
US1874667A (en) * | 1931-04-22 | 1932-08-30 | Wada Yoshinobu | Pumping apparatus for medical treatments |
US1889822A (en) * | 1930-05-10 | 1932-12-06 | Kenneth S Clapp | Pump |
US2015123A (en) * | 1934-05-11 | 1935-09-24 | Pennell Samuel | Blood transfusion apparatus |
US2368789A (en) * | 1941-10-21 | 1945-02-06 | Hydraulic Dev Corp Inc | Balanced vane pump |
-
1948
- 1948-03-04 US US13042A patent/US2625885A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1690728A (en) * | 1927-06-16 | 1928-11-06 | Joseph F Jaworowski | Rotary pump |
US1889822A (en) * | 1930-05-10 | 1932-12-06 | Kenneth S Clapp | Pump |
US1874667A (en) * | 1931-04-22 | 1932-08-30 | Wada Yoshinobu | Pumping apparatus for medical treatments |
US2015123A (en) * | 1934-05-11 | 1935-09-24 | Pennell Samuel | Blood transfusion apparatus |
US2368789A (en) * | 1941-10-21 | 1945-02-06 | Hydraulic Dev Corp Inc | Balanced vane pump |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3194488A (en) * | 1962-09-10 | 1965-07-13 | Goetzewerke | Sealing bar for rotating piston engines |
US3652192A (en) * | 1969-01-16 | 1972-03-28 | Lederle Pumpen & Maschf | Sealed conveying apparatus |
US3771901A (en) * | 1971-03-16 | 1973-11-13 | Alfa Laval Ab | Rotary pump |
US4017208A (en) * | 1975-06-13 | 1977-04-12 | The United States Of America As Represented By The Secretary Of The Navy | Two-way fluid meter pump |
US4103759A (en) * | 1976-03-09 | 1978-08-01 | Anschutz & Co. G.M.B.H. | Lubricating system for an antifriction bearing |
US4183416A (en) * | 1978-08-18 | 1980-01-15 | Dresser Industries, Inc. | Cutter actuated rock bit lubrication system |
FR2438737A1 (en) * | 1978-08-18 | 1980-05-09 | Dresser Ind | DRILL BIT LUBRICATING DEVICE |
US4280338A (en) * | 1979-11-29 | 1981-07-28 | General Motors Corporation | Rotatable flexible drive shaft with noise abatement |
FR2479916A1 (en) * | 1980-04-03 | 1981-10-09 | Gd Spa | DISPENSING APPARATUS FOR VISCOUS MATERIALS |
DE19852181B4 (en) * | 1998-11-12 | 2012-01-12 | Verschleiß-Technik Dr.-Ing. Hans Wahl GmbH & Co. | Screw conveyor for an eccentric screw pump |
NL2003270C2 (en) * | 2009-07-23 | 2011-01-25 | Sara Lee De | Pump for handling a fluid substance. |
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