US2933221A - Dispensing gun structure - Google Patents
Dispensing gun structure Download PDFInfo
- Publication number
- US2933221A US2933221A US643000A US64300057A US2933221A US 2933221 A US2933221 A US 2933221A US 643000 A US643000 A US 643000A US 64300057 A US64300057 A US 64300057A US 2933221 A US2933221 A US 2933221A
- Authority
- US
- United States
- Prior art keywords
- piston
- annular
- cartridge
- elastic member
- shoulder
- 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
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
- B05C17/0116—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like characterised by the piston driving means
- B05C17/012—Stepwise advancing mechanism, e.g. pawl and ratchets
- B05C17/0123—Lever actuated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/00576—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes characterised by the construction of a piston as pressure exerting means, or of the co-operating container
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
- G01F11/021—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type
- G01F11/025—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type with manually operated pistons
- G01F11/026—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type with manually operated pistons of the gun type
Definitions
- the present invention relates to dispensers of the type generally known as calking guns or dispensing guns and is most particularly adapted to a dispensing gun structure designed to be used with interchangeable cartridges of the material to be dispensed.
- the invention is not necessarily limited to applications where interchangeable cartridges are employed.
- the invention may be embodied in a dispensing cartridge in the form of a paper, metal or plas-tic tube having at one end an internal cap or piston adapted to -act as a plunger to express calking material or the like and at ,the other end a discharge opening through which expressing takes place.
- Frangible or removable sealing means may be provided at the cartridge o-r at both ends of the cartridge.
- the cartridge may form a convenient shipping container for the material to be dispensed.
- the invention is not limited to devices for dispensing calking compound as such, but it is generally applicable to devices for dispensing g-reases, printing inks, confectionery mixes, plastic materials and the like. However, since the invention presently appears to have its most promising application in calking gun structure, it will be described with particular reference thereto.
- a difiiculty encountered in the ruse of calking guns is" ⁇ that calking compound tends to continue to flow out the t discharge end of the gun after gun actuation is discon-4 tinued.
- This afterow is in part the result of the deformation ot the wall of the cartridge during gun actuation, due to the pressure to which the compound is subjected.
- the Wall in returning to its funstressed conformation when actuation is discontinued, pumps an additional unwanted increment of compound through the discharge chamber. This action is augmented by whatever compressibility the calking compound itself may have. Aftertlow of the calking compound is wasteful and messy and, therefore, very undesirable.
- This ratio is the ratio of l) the amount of linear displacement of the actuating rod which is necessary to accommodate the rearward expansion to (2) the amount by which the volume increases incident to the rearward expansion.
- the relatively high value of this ratio is due to the fact that such devices are incapable of backward expansion in the vicinity of their in the vicinity ot their center, and the cross-sectional area ICC in the vicinity of the periphery is, of course, far greater than the cross-sectional area in the vicinity of the center.
- Another object of the invention is to provide such a device in which sealing engagement of the piston with the tube during the expressing operation is tighter and more positive than in those of the prior art even though frictional resistance to rearward expansion is less than that of prior art devices.
- Another object of the invention is to provide anti-afterflow means which acts in such :a way that rearward expansion is aided by the release of stored energyother than and in addition to that stored-in the stressed walls of the tube or in the compressed calking compound.
- a piston structure comprising a piston body having a reduced and tapered ⁇ shoulder on which is received an axially displaceable annular elastic member.
- the advantages of the invention are to the remainder of the piston structure as to accomplish a significant degree of elastic deformation and corresponding energy ⁇ storage without tending to snub on the tapered shoulder on which it is received.
- Figure l is a view, partially broken away, showing the o nomal operative position of a calking gun which embodies the invention.
- Figure 2 is a cross-sectional view of an enlarged scale Patented Apr. 19, 1960 wise.
- Figure 3 is a View similar to Figure 2 but showing the piston in a different attitude or condition.
- calking compound Vcartridge l is inserted in lthe holder or bail il and is dischargedV out the end 12 through the discharge spout 13.
- the discharge end of the calking compound cartridge may contain a sealing diaphragm which is ruptured by insertion in the gun or by a separate puncturing tool or by the pressure which results when the gun is actuated.
- the discharge spout i3 may have a plug or cap which is removed when the gun is used. Other arrangements may be employed so that each cartridge 10 remains seated until it is actually used in the gun.
- the calking compound cartridge is in the form of a paperboard, ⁇ metal or plastic sleeve and includes a sliding plunger or piston gener lly indicated at v1S and designed to be engaged by an endplate 16 xed to the gun actuating rod or ratchet bar 17 and, thus, to be displaced along the cartridge to express the compound from the discharge orifice.V
- the piston l may serve asa seal or closure for the end of the cartridge opposite tothe discharge end. Alternatively, a separate frangible or removable closure for such end may be employed.
- the ratchet 'bar 17 is preferably circular in crosssection and may have a bent handle portion 18 at the rear end thereof.
- Ratchet teeth 19 are 'formed on one side of the bar 17. During gun actuation, the ratchet teeth 19 are engaged by a driving pawl 2t) and a holding pawl 2l.
- the handle portion of the calking gun may comprise a handle body 25, to which the bail 11 is fixed, and a lever grip 26 which is pivoted tothe handle body at 27.
- a large spring 28 urges the lever grip 26 to its open position.
- the driving pawl 20 is pivoted on the lever grip 26 at 29.
- the holding pawl 21 is pivoted on thc gun body at 3d. Both thesepawls are normally urged to ratchet engaging position in the conventional manner by suitably disposed wire springs (not shown for purposes of clarity).
- the piston 15 comprises a piston body 3S which may be stamped from sheet metal or otherwise formed of metal or some other 'appropriate material. Extending radially inwardly Vfrom the circumference of the piston body 35 is ⁇ an annular shoulder 36. An annular surface 37 tapers from ⁇ a relatively great diameter adjacent the root ofthe annular shoulder 36 to a relatively reduced diameter. kAn annular elastic member 38 is received on the annular surface 37. The member 3S has in nondistended condition an inside diameter smaller than the great diameter ofV the annular surface 37.
- the member 38 projects radially outwardly sufficient-ly to sealingly engage the cylindrical inside wall of the cartridge it)
- i l 4 is the position of the .parts when expressing force is applied through the actuating means including the actuating rod 17 and its associated elements.
- the parts are so dimensioned that sealing engagement obtains even when the member 38 is located over the smallest diameter of the annular surface 37, but in any event itwill be apparent that the tightest sealing engagement obtains when the member 38 is moved toward or to the shoulder 36.
- the tapering annular surface 37 may have an extension 39 which may not be tapered in the same way or, as shown, may not be tapered at all.
- the ring 38 is retained by a radially projecting shoulder 40 land the piston body is completed in the illustrated example by a central Wall 41.
- the member 38 has the shape of a toroid of essentially square .small cross-section (taken on planes extending axially). This presently appears to be a preferable shape.
- the torus As the torus is displaced, its outermost leading edge wipes the inside of the container, establishing a line seal.
- theleading outer edge A of the ring 3S as shown in Figure 2 will establish line contact when the piston 1S is advanced Yto dispense material@
- the Vdistendiug of the ring in this condition involves to a considerable extent stresses which are selfcontained within the ring itself or stresses which react through the annular shoulder 36 without reaction through the annular surface 37.
- the illustrated in-V vention involves a relatively low.displacement-expansion ratio and at the same time involves only a relatively low -friction between the periphery of the piston and the sides of the ⁇ tube or cartridge during rearward expansion.
- annular elastic member received on said annular tapered surface'and having in non-distended condition an inside diameter smaller than said great diameter, said annular elastic member projecting radially outwardly suiciently to sealingly engage the wall of said cylindrical chamber with the tightest sealing engagement obtaining when the annular elastic member is adjacent said shoulder, and radially projecting retaining means on the axially opposite side of said annular elastic member from said shoulder, said shoulder and said retaining means being spaced apart suiciently to accommodate relative axial translation of said piston body with respect to said annular elastic member, said annular elastic member annularly continuously sealingly engaging said annular surface throughout said relative axial translation.
- a calking assembly comprising a cylindrical cartridge having, at its respective rear and front ends, a piston and a dispensing spout, said piston being received within the cartridge so as to seal the cartridge and so as to remain at progressively advanced positions toward said spout, a calking gun for supporting said cartridge, said gun being provided with an axially movable plunger to engage said piston whereby calking material in said cartridge is expressed under pressure through said spout responsive to axial movement of said piston toward said spout, said piston comprising a piston body, an annular shoulder extending radially inwardly from the circumference of said piston body, an annular surface tapered from a relatively great diameter adjacent the root of said annular shoulder to a relatively reduced diameter, au annular elastic member received on said annular tapered surface and having in non-distended condition an inside diameter smaller than said great diameter, said annular elastic member projecting radially outwardly suiciently to sealingly engage the wall of said cylindrical cartridge with the tightest sealing engagement obtaining when the annul
- a calliing assembly comprising a cylindrical cartridge having, at its respective rear and front ends, a piston and a dispensing spout, said piston being received within the cartridge so as to seal the cartridge and so as to remain at progressively advanced positions toward said spout, a callting gun for supporting said cartridge, said gun being provided with an axially movable plunger to engage said piston whereby calking material in said cartridge is expressed under pressure through said spout responsive to axial movement of said piston toward said spout, said piston body having an annular shoulder, an annular surface tapered from a relatively great diameter adjacent the root of said annular shoulder to a relatively reduced diameter, an annular elastic member received on said annular tapered surface and having in non-distended condition an inside diameter.
- annular elastic member projecting radially outwardly suiliciently to sealingly engage the wall of said cylindrical cartridge with the tightest sealing engagement obtaining when the annular elastic member is adjacent said shoulder, said annular surface being of sufficient length to accommodate axial translation of said elastic annular member relative thereto and said elastic annular member being axially translatable along said annular surface, said annular elastic member annularly continuously sealingly engaging said annular surface throughout said relative axial translation.
- a callcing assembly comprising a cylindrical cartridge having, at its respective rear and front ends, a piston and a dispensing spout, said piston being received within the cartridge so as to seal the cartridge and so as to remain at progressively advanced positions toward said spout, a calking gun for supporting said cartridge, said gun being provided with an axially movable plunger to engage said piston whereby calking material in said cartridge is expressed under pressure through said spout responsive to axial movement of said piston toward said spout, said piston comprising a piston body, an annular shoulder extending radially inwardly from the circumference of said piston body, anannular surface tapered from a relatively great diameter adjacent.
- annular toroidal elastic member of essentially square small cross-section received on said annular tapered surface and having in non-distended condition an inside diameter smaller than said great diameter, said annular elastic member projecting radially outwardly sufficiently tosealingly engage the wall of said cylindrical cartridge with the tightest sealing engagement obtaining when the annular elastic member is adjacent said shoulder, and radially projecting retaining means on the axially opposite side of said annular toroidal elastic member from said shoulder, said shoulder and retaining means being spaced apart suiciently to accommodate axial translation of said elastic member, relative to said piston body between said shoulder and said retaining means, said annular elastic member annularly continuously sealingly engaging said annular surface throughout said relative axial translation.
- a dispensing device comprising a cylindrical chamber having a discharge 1952 at one end, a piston movable axially through said chamber toward said orifice, actuating means for advancing said piston, said piston comprising a piston body having an annular shoulder,
- annular surface tapered from a relatively great diameter adjacent the root of said annular shoulder to a relatively reduced diameter
- annular elastic member received on said annular tapered surface and having in non-distended condition an inside diameter smaller than said great diameter, said annular elastic member projecting radially outwardly sufficiently to sealingly engage the wall of said cylindrical chamber with the tightest sealing engagement obtaining when the annular elastic member is adjacent said shoulder, said annular surface being of suicient length to accommodate axial translation of said annular elastic member and said piston body relative to each other, said annular elastic member being axially translatable along said annular surface, said annular elastic member annularly continuously sealingly engaging said annular surface throughout said relative axial translation.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Coating Apparatus (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Description
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US643000A US2933221A (en) | 1957-02-28 | 1957-02-28 | Dispensing gun structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US643000A US2933221A (en) | 1957-02-28 | 1957-02-28 | Dispensing gun structure |
Publications (1)
Publication Number | Publication Date |
---|---|
US2933221A true US2933221A (en) | 1960-04-19 |
Family
ID=24578951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US643000A Expired - Lifetime US2933221A (en) | 1957-02-28 | 1957-02-28 | Dispensing gun structure |
Country Status (1)
Country | Link |
---|---|
US (1) | US2933221A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3319841A (en) * | 1966-03-21 | 1967-05-16 | Columbia Cement Company Inc | Leak-proof cartridges housing cements, caulking compounds or the like |
US4634569A (en) * | 1981-11-16 | 1987-01-06 | Jeumont-Schneider Corporation | Device permitting reduction of thermosiphon effects in fast neutron nuclear reactors |
US4645098A (en) * | 1984-02-16 | 1987-02-24 | Hilti Aktiengesellschaft | Press-out piston for dispensing substance from a container |
US4747186A (en) * | 1984-08-28 | 1988-05-31 | Spike Robert V | Method for stuffing sausages |
US4834268A (en) * | 1987-02-13 | 1989-05-30 | Keller Wilhelm A | Dispensing cartridge with delivery piston |
US5211312A (en) * | 1991-10-28 | 1993-05-18 | Chang Peter J Y | Caulk dispensing device with thumb-control lock |
US5755362A (en) * | 1995-02-27 | 1998-05-26 | Minnesota Mining & Manufacturing Co. | Hand-held applicator with force limiting clutch |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE503449A (en) * | ||||
US2123712A (en) * | 1935-04-29 | 1938-07-12 | Lubrication Corp | Lubricating device |
US2539846A (en) * | 1945-01-08 | 1951-01-30 | Howard B Lewis | Venom extractor |
US2778541A (en) * | 1955-09-01 | 1957-01-22 | William A Sherbondy | Caulking gun |
-
1957
- 1957-02-28 US US643000A patent/US2933221A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE503449A (en) * | ||||
US2123712A (en) * | 1935-04-29 | 1938-07-12 | Lubrication Corp | Lubricating device |
US2539846A (en) * | 1945-01-08 | 1951-01-30 | Howard B Lewis | Venom extractor |
US2778541A (en) * | 1955-09-01 | 1957-01-22 | William A Sherbondy | Caulking gun |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3319841A (en) * | 1966-03-21 | 1967-05-16 | Columbia Cement Company Inc | Leak-proof cartridges housing cements, caulking compounds or the like |
US4634569A (en) * | 1981-11-16 | 1987-01-06 | Jeumont-Schneider Corporation | Device permitting reduction of thermosiphon effects in fast neutron nuclear reactors |
US4645098A (en) * | 1984-02-16 | 1987-02-24 | Hilti Aktiengesellschaft | Press-out piston for dispensing substance from a container |
US4747186A (en) * | 1984-08-28 | 1988-05-31 | Spike Robert V | Method for stuffing sausages |
US4834268A (en) * | 1987-02-13 | 1989-05-30 | Keller Wilhelm A | Dispensing cartridge with delivery piston |
US5211312A (en) * | 1991-10-28 | 1993-05-18 | Chang Peter J Y | Caulk dispensing device with thumb-control lock |
US5755362A (en) * | 1995-02-27 | 1998-05-26 | Minnesota Mining & Manufacturing Co. | Hand-held applicator with force limiting clutch |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: GLENFED FINANCIAL CORPORATION, 104 CARNEGIE CENTER Free format text: SECURITY INTEREST;ASSIGNOR:GOLENBERT COMPANY, THE;REEL/FRAME:004858/0185 Effective date: 19880331 Owner name: GLENFED FINANCIAL CORPORATION, A CA CORP., NEW JER Free format text: SECURITY INTEREST;ASSIGNOR:GOLENBERT COMPANY, THE;REEL/FRAME:004858/0185 Effective date: 19880331 |
|
AS | Assignment |
Owner name: FIRST NATIONAL BANK OF CHICAGO, THE, ONE FIRST NAT Free format text: SECURITY INTEREST;ASSIGNOR:GOLENBERG COMPANY, THE;REEL/FRAME:004850/0621 Effective date: 19880331 Owner name: FIRST NATIONAL BANK OF CHICAGO, THE, ILLINOIS Free format text: SECURITY INTEREST;ASSIGNOR:GOLENBERG COMPANY, THE;REEL/FRAME:004850/0621 Effective date: 19880331 |