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25 Patented Sept. 7, 1937 UNITED STATES 6 Claims. My invention relates to siphons and particu larly to rechargeable soda siphons. These si phons as heretofore made usually consist of a glass bottle or vase that is reenforced by a woven wire jacket or other metallic covering as in the well-known "Sparklets' siphon. Each siphon has a removable siphon tube that extends nearly to the bottom and is held in place at the top by a removable head. This head has a valve con trolled discharge nozzle through which carbon ated water from the siphon tube is discharged, and a charging head which as a cooperating bulb holder into which the carbon dioxide capsule is inserted for carbonating the liquid in the si phon. The glass vase forming the body of the siphon has a colored filling line marked on it which indicates the maximum level to which the siphon is to be filled with liquid before carbon ating in Order to produce the best carbonating of the liquid and the best safe working pressure. It sometimes happens through carelessness or inexperience that the person preparing the si phon for use fills it above the filling line. The result is that the increased volume of water is not properly carbonated and too high pressure is pro duced in the siphon. Also the glass vases, even though covered with metal reenforcement, are subject to breakage when dropped or struck Sharply against a metal object or fixture. Among the objects of the present invention, therefore, is to provide a filling or measuring tube within the siphon so that it can not be filled above a predetermined level. SPEON awrence T. Ward, New York, N.Y., assignor to Sparklets Limited, London, England, a corpo ration of Great Britain Application August, 1936, Serial No. 97,006 Another object is to provide means Whereby the measuring tube may be quickly and easily. removed for cleaning the inside of the siphon. Another, object is to provide a safety device or vent So that the siphon can not be charged if the filling tube is omitted. Still another object of the invention is to pro vide an all metal siphon, thereby doing away with the glass vase. Yet another object is to provide a metal siphon made in two parts detachably connected to gether, the upper part including the siphon head, i. siphon tube and measuring tube, being removable as a unit. Another object is to provide a two part metal siphon with the measuring tube formed integral with or fixedly secured to the top removable sec tion. Another object is to provide a siphon having removable interchangeable siphon and shaker heads, whereby the body may be used either as a siphon or cocktail shaker. The above and other objects and advantages of the invention are attained by the embodiments thereof that I have illustrated in the accompany ing drawings wherein:.." PATENT OFFICE (Cl. 215-4) Fig. 1 shows a metal siphon having a removable measuring tube. Fig. 2 shows a similar metal siphon with the body made in two parts. Fig. 3 illustrates how the siphon body may be used with an interchangeable head as a cocktail Shaker. Fig. 4 is an enlarged view, partly in section, of the siphon shown in Fig. 1. Fig. 5 shows how the measuring tube may be removed. Fig. 6 shows how the gas may escape through the safety port if the measuring tube or its seal ing washer is omitted. Fig. 7 is a sectional view of a metal siphon with the filling tube integral with the top section. Fig. 8 is a sectional view of a siphon having a glass vase with a measuring tube applied thereto. Referring now to Figs. 1 and 4, the body of the siphon is made of metal and has a bottom that is brazed or soldered in place so that the body is in effect a single piece. the neck 2 is exter nally screw-threaded at 3 to receive the siphon head 14 which has a nozzle 5 controlled by the valve 6 and lever f7. A charging head i8 opens into an expansion chamber 9 in the siphon head 4 and is adapted to receive either the bulb holder and carbon dioxide bulb 2 for charging the siphon or the closure cap 22 after the siphon has been charged. The neck f2 has an internal recess providing a seat 23 and is screw-threaded to receive the. screw-threaded upper end 24 of the fling and measuring tube 25, which extends down in the siphon to the filling level. The measuring tube is enlarged or has a flange at its upper end the top of which lies substantially flush with the top of the neck and the lower side of which engages a gasket 26 to make a tight joint with the seat 23. The measuring tube 25 is provided with some means, as lugs 27, adapted to be engaged by the wrench 28 or other suitable tool so that it may readily be removed or inserted for any reason, as for cleaning or converting the siphon into a shaker.. The siphon tube 29 may be either glass or metal and extends nearly to the bottom of the siphon. It has a flanged head at its upper end which engages the rubber gasket 3 and when the head 4 is screwed into place it presses both the head and gasket 3 downward to form a tight joint with both the neck 2 and the end 24 of the filling tube to prevent the escape of gas.. When it is desired to charge the siphon the head f4, gasket 3 and tube 29 are removed and cold water or other liquid poured through the measuring tube 25 until it reaches the lower-end of the tube and seals of the air chamber 32 which. occupies that part of the siphon surrounding the tube. The length of the tube 25 is such that the 10 5 25
0 50 60 65 2 siphon contains just the right quantity of liquid for proper carbonating when filled up to the end of the tube. The siphon tube, gasket and head are now replaced and the head screwed down tightly. The liquid is now ready to be carbonated and the size of the chamber 32 is such as to insure the proper working pressure within the siphon. In case the operator should be careless or intentionally leave out the measur ing tube 25, so that the siphon may be falled above the desired level, I provide a safety port 3 leading from the seat 23 to the outside...of the neck, which will be left open by omission of the tube 25 and gasket 2s so that the gas will escape and dangerous pressure can not be built up in the siphon, as best shown in Fig. 6. In Figs. 2 and 7 I show the siphon body made in top and bottom Sections 4,, removably se cured together by screw-threads 36, 37 and a packing ring 38. The same siphon head 4, si phon tube 29 and gasket 3 are used in these modifications as in Figs. 1 and 4, but the measur ing tube 39 may be integral with the top section 34, as shown in Fig. 7, or it may be removable 5 like tube 25. The top section 34 is drawn in to provide a neck (Fig. 7) that is screw-threaded to receive the head 4. While the tube 39 and Section 4 are shown integral in Fig. 7, and are so described, they may originally be formed as separate parts and brazed or soldered together to form a single piece, the junction of the neck and tube 39 providing a seat 4 for the gasket 3. The lower end of the filling tube terminates substantially at the dividing line between the top and bottom sections, but, of course, the two parts may be separated at any other preferred level. In Fig. 3 I have shown how my improved siphon may be used as a cocktail Shaker. The shaker may be made by using the lower section of the siphon shown in Figs. 2 and 7, and replacing the top section 4 with a plain section 4' closed by a removable shaker head 42. The head 42 may be secured to the section 34' in any suitable man ner, but generally the section 4' has a screw threaded neck the same as the neck so that the shaker head 42 and siphon head 4 are inter changeable. The head 42 has a pouring spout closed by a cap 43. The siphon shown in Figs, 1 and 4 may like wise be used as a shaker. To thus convert the siphon, the head f4, siphon tube 29, and measur ing tube 25 are removed and the shaker head 42 screwed on the neck 2 after the siphon body has been filled with the required ingredients. Like wise, both sections 34, of the siphon of Pigs. 2 and 7 may be utilized in the shaker if the tube 39 is made removable. in Fig. 8 have shown removable filling tube 4 adapted for use with a siphon having a glass vase or body 45 covered with a woven wire mesh 46 such as the well-known "Sparklets' siphon. At its upper end the tube 44 is flanged as a and is engaged by a rubber sleeve or packing 48 that fits snugly in the neck 49 of the vase 5. A metal neck 50 is secured to the siphon and is screw-threaded to receive the siphon head 4. The filling or measuring tube extends down to the fling line of the siphon and prevents its being 0 filled too full. The tube 44 is easily removed upon - renoval of the head f4 and siphon tube 2. Having thus described several forms that my 75 invention may take, it will be apparent to those skilled in this art that it may be embodied in many other forms and modifications, and claim as my invention all such that may 'come within the scope or spirit of my claims. What I claim is: 1. In a rechargeable siphon, the combination of a siphon body having a neck at its upper end, a recess providing an annular seat formed within Said neck, there being a safety port leading from said annular seat through said neck, a measuring tube extending into the siphon and having a flange at its upper end removably secured within Said recess, a packing between said annular seat and flange, a siphon tube within said measuring tube, and a siphon head removably secured to Sadd neck and holding said siphon tube in place. 2. In a rechargeable siphon, the combination of a siphon body having a neck, a screw-threaded recess formed in Said neck and providing an an nular seat at the bottom thereof, a removable measuring tube extending a predetermined dis tance into the siphon with its upper end screwed into said recess and bearing on said annular seat, tool engaging means within said measuring tube for effecting its engagement with and removal from said threaded recess, a siphon tube within said measuring tube, and a siphon head engaging said neck and siphon tube. 3. In a device of the class described, a metal siphon body having a neck at its upper end, a measuring tube extending into the siphon and formed integrally with said neck, a siphon head detachably secured to said neck, said siphon body being made in two sections detachably secured together below said 'neck. 4. In a rechargeable siphon, the combination of a siphon body having an externally screw threaded neck, a screw threaded recess within said neck, a measuring tube having a threaded flange at its upper end secured in said recess and extending into the siphon, the upper face of said flange being flush with the top of said neck, a gasket engaging said flange and neck, a siphon tube extending through said filling tube and hav ing a head at its upper end engaging the top of said gasket, and a siphon head screw threaded on Said neck and pressing said gasket into sealing engagement with said neck and flange. 5. In a rechargeable siphon, the combination of a siphon body having sn externally screw threaded neck, a screw threaded recess within Sed neck having an annular seat at the bottom thereof, there being a safety port leading from Said annular seat through said neck, a packing ring on said seat, a removable measuring tube having a threaded flange at its upper end aecured in said recess and bearing on said packing ring, the upper face of said flange being substantially flush with the top of said neck, said measuring tube being provided internally with tool engag ing means to effect its removal from and inser tion in said recess, a siphon tube extending through said measuring tube, a gasket bearing on the top of said neck and the upper face of said flange, and a silhon head screwed on said neck and forcing said gasket into sealing engagement with said neck and lange, 6. In a rechargeable siphon, the combination of a siphon body having a neck, a measuring tube exteriding through the neck and into the aiphon body, a siphon tube within the measuring tube, a siphon head securing aaid siphon tube in posi tion, said siphon body having a relief passage that is normally closed by said measuring tube but is opened upon removal of the measuring tube. AWRCNCT, WARD, O 5 25 45 SS O S