|Publication number||US3354916 A|
|Publication date||Nov 28, 1967|
|Filing date||Mar 22, 1965|
|Priority date||Mar 25, 1964|
|Also published as||DE1961134U|
|Publication number||US 3354916 A, US 3354916A, US-A-3354916, US3354916 A, US3354916A|
|Original Assignee||Tommaso Ruscitti|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (4), Referenced by (4), Classifications (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Nov. 28, 1967 T. RUSCITTI 3,354,916 HEAD FOR CLAWING THE VALVE ON AN AEROSOL BOMB AND FOR THE SIMULTANEOUS FILLING THEREOF WITH A METERED AMOUNT OF PROPELLANT Filed March 22, 1966 7'0 MMASO INVENTOR.
fine/T17 United States Patent 3,354,916 HEAD FOR CLAWING THE VALVE ON AN AERO- SGL BDMB AND FDR THE SHVIULTANEOUS FILLING THEREOF WITH A METERED AMOUNT 6F PROPELLANT Tommaso Ruscitti, 11 Via Arnedeo dAosta, Milan, Italy Filed Mar. 22, 1965, Ser. No. 441,559 Claims priority, application Italy, Mar. 25, 1964, 45,422 9 Claims. (Cl. 141-20) This invention relates to a head designed to be fitted on propellant metering machines, for clawing a valve on an aerosol bomb, and for the simultaneous filling thereof with a metered amount of propellant.
As already well known, to make an aerosol bomb ready for the use, the substance or mixture to be dispersed as a spray or aerosol is to be firstly introduced into the container or bomb, whereafter a valve is to be fastened thereto by means of a so called: clawing machine, by which a flange of same valve is beaded around the neck of bomb.
Next, the thus valved bomb is brought on a filling and metering machine, by which a metered amount of propellant is filled under the required pressure, into same bomb.
The main purpose of this invention consists in the provision of a head, that can be fitted also on already existing machines, and by which both operations of heading the valve onto the container neck, and of filling same container can be carried out simultaneously thereby saving the time otherwise required for one of the beading and filling operations, as well as the idle times as required in the conventional process, for transferring the container from the one to the other machine.
The filling head according to this invention is also of a simple and rugged design, operates in an absolutely reliable and safe manner, and all the diiferent operations required can be performed automatically by it.
The object of this invention is essentially characterized in that it comprises a co-axially expanding clawing or beading head, controlled by a bomb positioning collar, that in turn controls an inlet valve for the introduction of pressure air, by which a wedge is depressed, thereby causing both the expansion of claws, and the depression of a sealing member fitted on valve stem, and that can perform a relative motion in respect to said wedge. By said motion, ports are uncovered, thereby allowing a flow of propellant through the valve stem.
The invention will be better understood from a consideration of the following description, taken with the accompanying drawing, being both description and drawing given as a not restrictive example only.
In the drawing, an axial section of a beading and filling head according to the invention is shown.
Referring now to same drawing, the beading and filling head consists of a body indicated generally by the reference numeral 1, and that is comprisive of two sections 2 and 3, connected with each other by means of bolts 4.
Two inlets are connected with such head 1, i.e. one inlet 5 for the propellant designed to be filled into the bomb, such propellant being delivered in the direction of arrow G, by a metering device (not shown in the drawing) of the conventional, already known type, and a second inlet 6 for the compressed air, that is delivered in the direction of arrow A.
A collar 7 is telescopically connected with the lower end of section 3 of head 1. Such collar can be caused to slide into, and out said section 3 for an amount as defined by the length of slot 8, that cooperates with a dowel 9, that is screwed on the section 3.
A further collar 10 is adjustably connected, e.g. by
means of screws, with said collar 7. A seat 11, with which said collar 10 is formed, is designed to accommodate the upper end of a valve, to be secured onto a bomb, that is positioned beneath the seat 11 (not shown in the drawing).
The position of collar 10 can be adjusted in respect to that of collar '7 by loosening a set nut 12 and a lock screw 13, which are then again tightened after said two components have been adjusted on the required mutual position.
The movement of collar 10, and thus also of collar 7, is counteracted by a spring 14. A tierod 15, threaded through a suitable opening of body 3, is connected on one end with the end of collar 7, and on the opposite end with a pushbutton, that controls a valve 17 which engages a seat 16, the arrangement being such that, when a pressure is exerted on the valve 17 by means of tierod 15, against the force of spring 18, the port for the flow of air, coming from A, in the direction of same arrow A, is kept open.
A piston 20, sealed by a packing 21, is slidingly fitted in a bore 19, whereby it can perform a motion relative to section 2 of body 1.
Said piston 20 is moved against the action of a spring 22. When the same piston 20 is moved downward, the shaft 23 is also moved therewith, being the seal to the outside-and in particular toward the inlet of propellant-- ensured by the packings 24, 25 and 26. The hollow shaft 23 is formed with an axially directed orifice 27, that communicates with the inlet of gas G, that leads into a bore 28, wherein a piston 29 is slidingly fitted.
A given play is left between the bore 28 and the piston 29, being thereby the gas allowed to flow across the narrow intervening space existing between the piston 29 and said bore 28.
Claws 30 are connected with the section 3 in such a manner as to be able to perform a radially directed swinging motion. The ends of such claws 30 are formed with an inclined surface 31 whereby when the wedge 32, and the shaft 23 fastened thereto, are forced downward, said claws 30 are radially forced outwardly.
Fast with the piston 29 is a coupling head 33, that is on turn slidingly fitted inside of wedge 32, being said piston 29 kept in the position as shown in the drawing by the action of a spring 34.
A packing 35, fitted on the outer end of head 33, is formed with a recess 36, within which the stem of aerosol bomb to be filled can be tightly seated.
The operation of heading and filling head according to the invention is as follows:
The bomb or container to be filled, upon which the related valve is merely set, but not yet beaded, is positioned beneath the head, in vertical alignment with the seat 11. By lowering the head 1, or respectively by lifting the bomb to be filled, same bomb will be brought into contact with the seat 11, whereafter the collar 14 is lifted, against the action of spring 14, until the collar 7 strikes against the component 37 acting as a limit stop. in such a position, the outer ends of claws 36 will be against the flange to be beaded. However, while the lifting of collar 10 (i.e. of collar 7), the tierod 15 is also drawn upwardly, thereby opening the valve 1'7, and thus allowing the compressed air to flow from the inlet A, into the upper chamber 38, above the piston 20, which therefore will be forced downward, against the action of spring 22, until it strikes against the limit stop 39, which position can be adjusted by means of the threaded ring 40, that is locked by the catch 41. Thus, the shaft 23 is also forced downward, whereby the wedge 32 is forced against the inclined surfaces 31 of claws 39, which results in same claws being forcibly set apart, thereby beading the valve fiange to bomb neck.
However, together with the shaft 23, also the coupling head 33 is lowered, until the end of valve stem strikes against the end portion 42 of valve stem seat 36.
After the above-stated position is attained, i.e. after the coupling head is wholly coupled with the valve stem, the piston 29 and the coupling head 33 are stopped, while the piston 23 will continue its stroke, against the action of spring 34. Thus, while the piston 23 is moved relative to piston 29, the ports 43 with which same piston 29 is formed, and that communicate with the recess 44, leading to recess 36, will be left free from the packing 45, whereby the propellant, coming from the metering device, is allowed to flow across the duct 27, the bore 23, the intervening space between the piston 29 and the walls of bore 28, and the ports 43, into the opening 44, i.e. in the opening 36, or in other words into the stem of filling valve, which is biased downward by the action of the catch 42 of said piston 29. Thus, in point of fact, in addition to beading of valve to bomb neck, also the filling of bomb with propellant as delivered by the metering unit is attained.
Said metering unit is also provided with a limit stop, that is connected with a pneumatic valve (not shown in the drawing) by which the flow of air from the inlet A is stopped, bringing also same inlet into communication with the atmosphere. Thus, the pressure air is released from the chamber 38, which results in a gradual lifting of piston 20, and also of piston 23, under the action of spring 22,
i.e. the heading head 30 is again closed. When a given limit is exceeded by the air pressure in 38, an automatic valve is operated by same pressure, thereby opening a further valve, through which the pressure is released. As a consequence thereof, the filled bomb is withdrawn from the filling head 1, and the filling operation is thus completed. As it can be readily appreciated, conditions opposite to those existing in the filling operation will prevail in the course of return stroke of piston 26, and similarly when the bomb or other container is withdrawn from the collar 10, and thus from the seat 11, the filling head will take again the position as shown in the drawing; i.e. it will be ready for filling the next bomb, when placed beneath it.
Thus, it will be seen that the filling and clawing head of the invention is capable of operating on containers, such as aerosol containers, for clawing a valve assembly onto such a container and for admitting propellant into the container simultaneously with the clawing of the valve assembly onto the latter. This head of the invention includes the cylinder means 1, formed by the interconnected housing components 2 and 3, and the piston means 20, 23 which is movable or slidable in the cylinder means for movement therein along a working stroke, this working stroke being in a downward direction as viewed in the drawing. The cylinder means and the piston means have a common axis, and the claw means 39 is coaxially fixed to the cylinder means for clawing a valve assembly onto a container upon radial spreading of the claw means 30 with respect to the common axis of the cylinder means and piston means. The wedge 32 forms a wedge means which is fixed to the piston means for movement therewith and which coacts with the claw means for radially spreading the latter during the working stroke of the piston means, and it will be seen that the claw means surrounds the wedge means while the wedge means has a hollow interior. The piston 29 together with the coupling head 33, the spring 34, the ports 43, the hollow interior 44 of the coupling head, and the packing or sealing gland 45 form a filling means which is carried by the piston means and extends into the hollow interior of the wedge means for engaging and opening a valve of the valve assembly of the container and for admitting propellant into the container through the open valve thereof in response to movement of the wedge means with the piston means along the working stroke of the latter. The assembly 7, forms a positioning means for positioning a container and the cylinder means one with respect to the other at a location where the claw means 30 is properly positioned with respect to the valve assembly to be clawed onto the container by radial spreading of the claw means. The positioning means 7, 10 and the cylinder means 1 form a pair of coaxial means axially movable one relative to the other along their common axis during positioning of the container at its proper location, and the valve 17 forms a valve means which communicates with the cylinder means for admitting into the latter pressure fiuid for driving the piston means along its working stroke upon opening of the valve means 17. The tierod 15 forms an opening means which coacts with the valve means 17 and which responds to the movement of the said one of the pair of coaxial means for automatically opening the valve means 17 to admit the pressure fluid to act on the piston means when the container is located by the positioning means at the above-mentioned location.
It is to be noted that the cylinder means 1 itself forms the outer housing for the entire assembly and is capable of being mounted on existing machines. Furthermore, it will be seen that the positioning means 7, 10 is directly carried by the cylinder means for movement with respect thereto and that the opening means 15 is carried by the positioning means while the valve means 17 is carried by the cylinder means. Furthermore, the packing 45 forms a sealing gland whose inner cylindrical surface coacts with the ports 43 for closing the latter, and it is when these ports 43 and the inner cylindrical surface of the packing 45 are axially displaced with respect to each other that the ports 43 become uncovered to admit the propellant. This latter feature provides an exceedingly compact assembly. The compactness of the structure is further enhanced by the construction of the claw means 30 according to which its upper end is directly fixed rigidly to the cylinder means while the claw means includes a plurality of depending springy fingers which are radially spreadable with respect to the upper rigidly fixed end of the claw means.
While a certain, preferred embodiment form of the invention has been herein shown and described, various obvious changes may be made therein, and is intended, therefore, to cover all such changes and modifications in the appended claims.
What I claim is:
1. A filling and clawing head for containers, such as aerosol containers, comprising cylinder means, piston means slidable in said cylinder means for movement along a working stroke, said cylinder means and piston means having a common axis, claw means coaxially fixed to said cylinder means for clawing a valve assembly onto a container upon radial spreading of said claw means with respect to said axis, wedge means fixed to said piston means for movement therewith and coacting with said claw means for radially spreading the latter during the working stroke of said piston means, said claw means surrounding said wedge means and said wedge means having a hollow interior, filling means carried by said piston means and extending into said hollow interior of said wedge means for engaging and opening a 'valve of the valve assembly of the container and for admitting propellant into the container through the open valve thereof in response to movement of said wedge means with said piston means along the working stroke of the latter, positioning means for positioning a container and said cylinder means one with respect to the other at a location where said claw means is properly positioned with respect to the valve assembly to be clawed onto the container by radial spreading of the claw means, said positioning means and said cylinder means forming a pair of coaxial means axially movable one relative to the other along their common axis during positioning of the container at said location, valve means communicating with said cylinder means for admitting into the latter pressure fluid for driving said piston means along its working stroke upon opening of said valve means, and opening means coacting with said valve means and responding to movement of said one of said pair of means for automatically opening said valve means to admit the pressure fluid to act on said piston means when the container is located by the positioning means at said location.
2. The combination of claim 1 and wherein said cylinder means forms an outer housing for the entire head.
3. The combination of claim 1 and wherein said positioning means is movably carried by said cylinder means.
4. The combination of claim 1 and wherein said valve means is carried by said cylinder means.
5. The combination of claim 1 and wherein said opening means is carried by said positioning means.
6. The combination of claim 1 and wherein said positioning means is movably carried by said cylinder means, said valve means is carried by said cylinder means, and said opening means is carried by said positioning means.
7. The combination of claim 6 and wherein said cylinder means forms an outer housing for the entire head.
8. The combination of claim 1 and wherein said filling means includes an elongated tubular member within said hollow wedge means having a hollow interior through which the propellant flows into the valve of the container, said tubular member being formed with at least one inlet port, and a packing carried by said wedge means and having an inner cylindrical surface surrounding and engaging said tubular member and closing said port thereof prior to movement of said piston means along said working stroke thereof, the movement of said piston means together with said wedge means along the working stroke of said piston means displacing said packing at said inner cylindrical surface thereof beyond said inlet port to uncover the latter for admission of propellant into said tubular member.
9. The combination of claim 1 and wherein said claw means has one end rigidly fixed to said cylinder means and has a plurality of springy fingers projecting beyond said one end to be radially spread by said wedge means.
References Cited UNITED STATES PATENTS 3,013,591 12/1961 Stanley et a1 141-3 3,173,457 2/1965 Focht 14l20 3,176,727 4/1965 Rousseau 14120 3,234,707 2/1966 VJestOn 14l--2O X LAVERNE D. GEIGER, Primary Examiner.
25 H. S. BELL, Assistant Examiner.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3013591 *||Dec 4, 1959||Dec 19, 1961||Kartridg Pak Co||Pressure filler head of pressure-dispensed products and method|
|US3173457 *||Apr 24, 1961||Mar 16, 1965||Precision Valve Corp||Method of and apparatus for pressure charging aerosol dispensers with push buttons attached|
|US3176727 *||Nov 1, 1961||Apr 6, 1965||Kartridg Pak Co||Pressure filler head having a universal adapter holder and adapters for pressure filling valved aerosol containers|
|US3234707 *||Oct 8, 1962||Feb 15, 1966||Nalbach Eng Co J||Apparatus for securing and sealing a closure cap to a receptacle and for charging the receptacle with gas under pressure|
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|US4903741 *||Dec 17, 1987||Feb 27, 1990||Industrias Marsel S.A.I.C.I.A.||Pneumatic action dispenser for filling bottles with soda and carbon dioxide|
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|U.S. Classification||141/20, 141/269|