US3121518A - Compression sprayer - Google Patents

Compression sprayer Download PDF

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Publication number
US3121518A
US3121518A US50537A US5053760A US3121518A US 3121518 A US3121518 A US 3121518A US 50537 A US50537 A US 50537A US 5053760 A US5053760 A US 5053760A US 3121518 A US3121518 A US 3121518A
Authority
US
United States
Prior art keywords
barrel
tank
fill opening
pump
locking member
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
Application number
US50537A
Other languages
English (en)
Inventor
August H Pinke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HD Hudson Manufacturing Co
Original Assignee
HD Hudson Manufacturing Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to NL260273D priority Critical patent/NL260273A/xx
Application filed by HD Hudson Manufacturing Co filed Critical HD Hudson Manufacturing Co
Priority to US50537A priority patent/US3121518A/en
Priority to GB43591/60A priority patent/GB945315A/en
Priority to FR848555A priority patent/FR1277093A/fr
Priority to ES0263832A priority patent/ES263832A1/es
Priority to LU39632D priority patent/LU39632A1/xx
Priority to BE599023A priority patent/BE599023A/fr
Priority to CH189961A priority patent/CH382076A/de
Priority to AT132461A priority patent/AT243560B/de
Application granted granted Critical
Publication of US3121518A publication Critical patent/US3121518A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/0805—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material
    • B05B9/0811—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material comprising air supplying means actuated by the operator to pressurise or compress the container
    • B05B9/0816—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material comprising air supplying means actuated by the operator to pressurise or compress the container the air supplying means being a manually actuated air pump
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass

Definitions

  • the present invention relates to compression sprayers for spraying under substantial pressure sprayable solutions including pesticides, insecticides, whitewash, sprayable paints, agricultural chemicals and the like, and more particularly to such a sprayer in which the pump assembly is removably mounted in the fill opening of the tank and to a novel cam locking means for effecting sealing engagement between the pump barrel and the portion of the tank defining the fill or access opening in which the barrel is mounted.
  • Compression sprayers as herein disclosed operate under substantial air pressure collected in the tank and generated by intermittent actuation of a pump whereby spraying may be continuously effected over a substantial period of time or until the pressure in the tank is sufiiciently decreased as to require the operator to again manipulate the pump to build up sufficient operating air pressure in the tank.
  • novel means are provided for positively sealing the pump assembly in the tank and maintaining such seal effective until the pump assembly is to be removed either after spraying has been completed or when the contents of the tank has been depleted and must be replenished.
  • the present invention further comprehends the provision of a novel cam locking member provided with a central depending portion so formed as to receive the upper end of the pump barrel and retain it fixed, thus resulting in a self-contained, unitary pump assembly.
  • Another important feature of the present pump assembly is the provision of a novel cam locking mechanism in which continuous surface contact is provided about the circumferential inturned lip of the funnel top of the tank and the cooperating circumferential portion of a cup-shaped cam locking member on the pump assembly for effecting positive sealing contact when the sprayer is assembled for operation.
  • FIGURE 1 is a view in perspective of an assembled compression sprayer embodying the present invention, the pump barrel and discharge tube in the tank being shown in dotted outline.
  • FIG. 2 is a fragmentary enlarged view in vertical cross section taken on the line 22 of FIG. 3 through the upper portion of the tank and the pump in assembled and sealing relation with the pump in position for operation, the handle and plunger rod being broken away.
  • FIG. 3 is a sectional view taken on the line 3-3 of FIG. 2 and viewed in the direction of the arrows, but showing the handle in dotted outline.
  • FIG. 4 is a view similar to FIG. 3 but showing the cam locking member on the pump in an intermediate position in which it is being rotated by the handle toward locked position.
  • FIG. 5 is a fragmentary view similar to FIGS. 3 and 4 but showing the cam locking member rotated by the handle to released position.
  • FIG. 6 is a view in perspective of the cam locking member of the pump assembly.
  • the compression sprayer comprises a tank A for containing a substantial quantity of a liquid or spray solution to be dispensed in a desired spray pattern under pressure through a discharge tube 14) depending into the tank, a connected flexible hose 11 of suitable length and an extension spray tube 12 having an adjustable spray nozzle 13 with the discharge controlled by a manually-operated valve 14-.
  • a pump assembly including a pump barrel or cylinder 16.
  • the tank A is shown provided at its upper end with a funnel top 117 having a constriction or neck 18 defining a fill opening 15 and providing a seat for a sealing gasket 19.
  • the cupped or unnel-shaped top 17 is provided at its upper circumferential edge with semi-circular inturned flanges providing circumferentially spaced and inclined cam surfaces 21 and 22 each adapted to receive therebeneath one of a pair of similarly inclined and circumferentially spaced cam surfaces 23 and 24 on the outwardly flanged circumference at the upper edge of a cupped cam locking member 25 providing the top of the pump assembly and received within the funnel top 17 of the tank.
  • the cupped cam locking member 25 has a depending central cylindrical constriction 26 at its lower end pressfitted into and securely retained within an enlargement 27 at the upper open end of the pump barrel 16, with the base 28 of this constriction having spaced arcuate slots 29 each having a communicating intermediate notch 31 for the entry and removal of one of a pair of oppositely extending radial projections 32 each depending from the hub 33 at the lower end of a pump handle 34 which is affixed to the upper end of a plunger rod 35 carrying a piston or plunger cup 36 at its lower end for generating pressure when the handle and the plunger lI'Od 35 are depressed on the pressure stroke.
  • the lower end of the pump cylinder is provided with a suitable check or non-return valve 37 the details of which check valve and plunger cup may be like that shown in the Hudson et al. Patent No. 2,792,170, of May 14, 1957, whereby the pump discharges air into the tank on the pressure stroke but the check valve prevents the reverse flow of air and/or 3 spray solution from the tank into the pump cylinder on the suction stroke.
  • the sealing gasket 19 encompasses the enlarged diameter :27 of the pump barrel 16 immediately below its top external flange 38. In this position, when the barrel 16 of the pump assembly is positioned within the fill opening in the tank A and ready for assembly of the pump in the tank, this gasket 19 rests upon the neck or constriction 18 of the funnel top 17.
  • the operator then depresses the handle 34 against the compression spring 39 encompassing the plunger rod 35 With the spring abutting at its lower end the slotted base 28 of the constriction 26. Depressing the handle 34 with the radial projections 32 aligned with the notches 31, causes these projections to enter and project through the notches so that when the handle 34 is' then turned to the right or clockwise, .assembly and sealing engagement is initiated.
  • the operator removes the pump. This is accomplished by again depressing the handle 34 With the projections 32 aligned with the notches 31 so that these projections pass through the notches, after which the operator turns the handle 34 to the left or counter-clockwise. In this position, the projections 32 are at the left-hand or opposite end of the arcuate slots 29 so that further turning of the handle counter-clockwise carries therewith the cam locking member 25 and pump assembly.
  • the enlarged end '27 of the barrel is raised sufficiently to enlarge the annular space between the barrel and the fill opening for exhausting the entrapped pressure to the atmosphere before complete disengagement of the camming surfaces 23 and 24 on the cam locking member from the camming surfaces 21 and 22 on the funnel top.
  • a cupped cam locking member 25 having a circumferential flange divided into two circumferentially spaced semi-circular cam surfaces 23 and 24 providing continuous camming contact with the similar semi-circular cam surfaces 21 and 22 on the funnel top of the tank when the cam locking member has been turned as far as possible to the right, provides a most effective safety cam lock between the tank and pump assembly assuring positive sealing contact. It further provides for eifectively retaining the pump assembly against release and removal until the camming surfaces 23 and 24 of the cam locking member are completely disengaged from beneath the camming surfaces 21 and 22 on the tank. By forming these camming surfaces 21, 22, 23 and 24 in the manner shown, turning of the handle 34 toward the left to release position, the operator is assured any entrapped pressure in the tank is relieved.
  • a compression sprayer having a tank provided with an outwardly and upwardly flared cupped end providing a funnel top with a constriction defining a fill opening for a spray solution, a planar annular seat surrounding said fill opening for an annular sealing gasket and spaced, inclined semi-circular inturned flanges at the upper peripheral edge of the funnel top providing camming surfaces, a pump assembly including a barrel detachably mounted in the fill opening and removable for supplying the tank with spray solution, said barrel having an enlarged diameter merging into an external outwardly and downwardly opening annular flange at its upper end with said enlarged diameter conformably received within the fill opening, a reciprocating plunger in said barrel and a handle for reciprocating said plunger, a resilient annular sealing gasket encompassing the upper end of said barrel about said enlargement and below and partially within said annular flange and adapted to seat upon said planar annular seat of said constriction for sealing the barrel in said fill opening of the tank, a cam locking member at the upper end

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Insects & Arthropods (AREA)
  • Pest Control & Pesticides (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Reciprocating Pumps (AREA)
  • Special Spraying Apparatus (AREA)
  • Nozzles (AREA)
  • Catching Or Destruction (AREA)
US50537A 1960-08-18 1960-08-18 Compression sprayer Expired - Lifetime US3121518A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
NL260273D NL260273A (enrdf_load_html_response) 1960-08-18
US50537A US3121518A (en) 1960-08-18 1960-08-18 Compression sprayer
GB43591/60A GB945315A (en) 1960-08-18 1960-12-19 Compression sprayer
FR848555A FR1277093A (fr) 1960-08-18 1960-12-31 Pulvérisateur à compression
ES0263832A ES263832A1 (es) 1960-08-18 1961-01-05 Pulverizador de compresiën
LU39632D LU39632A1 (enrdf_load_html_response) 1960-08-18 1961-01-10
BE599023A BE599023A (fr) 1960-08-18 1961-01-12 Pulvérisateur à compression.
CH189961A CH382076A (de) 1960-08-18 1961-02-16 Druckzerstäuber
AT132461A AT243560B (de) 1960-08-18 1961-02-17 Druckzerstäuber, insbesondere zur Schädlingsbekämpfung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50537A US3121518A (en) 1960-08-18 1960-08-18 Compression sprayer

Publications (1)

Publication Number Publication Date
US3121518A true US3121518A (en) 1964-02-18

Family

ID=21965821

Family Applications (1)

Application Number Title Priority Date Filing Date
US50537A Expired - Lifetime US3121518A (en) 1960-08-18 1960-08-18 Compression sprayer

Country Status (8)

Country Link
US (1) US3121518A (enrdf_load_html_response)
AT (1) AT243560B (enrdf_load_html_response)
BE (1) BE599023A (enrdf_load_html_response)
CH (1) CH382076A (enrdf_load_html_response)
ES (1) ES263832A1 (enrdf_load_html_response)
GB (1) GB945315A (enrdf_load_html_response)
LU (1) LU39632A1 (enrdf_load_html_response)
NL (1) NL260273A (enrdf_load_html_response)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD243087S (en) * 1974-05-30 1977-01-18 R. E. Chapin Manufacturing Works, Inc. Pump handle
US4509664A (en) * 1983-03-23 1985-04-09 H. D. Hudson Manufacturing Company Portable sprayer with safety cover
US4537334A (en) * 1983-07-18 1985-08-27 Tolco Corporation Portable pressure sprayer
EP0773890A4 (en) * 1995-06-01 1999-08-18 Hudson Mfg Co H D REUSABLE COMPRESSION SPRAYER USING A DISPOSABLE FOLDABLE BAG
US6138875A (en) * 1999-06-22 2000-10-31 Chapin Manufacturing, Inc. Hand-operated foaming apparatus
US6367663B1 (en) 1999-06-22 2002-04-09 Chapin Manufacturing, Inc. Hand-operated foaming apparatus with interchangeable nozzle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8631225U1 (de) * 1986-11-21 1987-01-08 Mesto Spritzenfabrik Ernst Stockburger GmbH, 7149 Freiberg Behälter für Druckspritzen
US4756481A (en) * 1986-11-24 1988-07-12 Theo Krebs Ag Apparatus for spraying a flowable mass and including an airless spray gun
US5435469A (en) * 1994-03-28 1995-07-25 H. D. Hudson Manufacturing Company Pump for compression sprayers

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1920636A (en) * 1931-02-18 1933-08-01 Hudson Mfg Co H D Sprayer construction
US2111961A (en) * 1937-03-29 1938-03-22 Henry E Brandt Spraying apparatus
US2196054A (en) * 1937-06-16 1940-04-02 Giles E Bullock Funnel head with closure member for sprayer tanks
US2769580A (en) * 1953-06-19 1956-11-06 Hudson Mfg Co H D Compression sprayer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1920636A (en) * 1931-02-18 1933-08-01 Hudson Mfg Co H D Sprayer construction
US2111961A (en) * 1937-03-29 1938-03-22 Henry E Brandt Spraying apparatus
US2196054A (en) * 1937-06-16 1940-04-02 Giles E Bullock Funnel head with closure member for sprayer tanks
US2769580A (en) * 1953-06-19 1956-11-06 Hudson Mfg Co H D Compression sprayer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD243087S (en) * 1974-05-30 1977-01-18 R. E. Chapin Manufacturing Works, Inc. Pump handle
US4509664A (en) * 1983-03-23 1985-04-09 H. D. Hudson Manufacturing Company Portable sprayer with safety cover
US4537334A (en) * 1983-07-18 1985-08-27 Tolco Corporation Portable pressure sprayer
EP0773890A4 (en) * 1995-06-01 1999-08-18 Hudson Mfg Co H D REUSABLE COMPRESSION SPRAYER USING A DISPOSABLE FOLDABLE BAG
US6138875A (en) * 1999-06-22 2000-10-31 Chapin Manufacturing, Inc. Hand-operated foaming apparatus
US6367663B1 (en) 1999-06-22 2002-04-09 Chapin Manufacturing, Inc. Hand-operated foaming apparatus with interchangeable nozzle

Also Published As

Publication number Publication date
LU39632A1 (enrdf_load_html_response) 1961-03-10
NL260273A (enrdf_load_html_response)
AT243560B (de) 1965-11-25
ES263832A1 (es) 1961-05-16
BE599023A (fr) 1961-07-12
GB945315A (en) 1963-12-23
CH382076A (de) 1964-09-15

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