Патент USA US2106903код для вставки
Feb. 1, 1938. ‘ ’ l - A, TÓYNKIN _ ' ' 2,106,903 -GAS MIXER v Fil'çd March 27, 1956 “mmf/7,11, 22 2/ '30 E; \ f ’fw A 1 BY . .l INVENTOR. ' ` - , l /if fw ATTORNEY. Patented Feb. 1, 1938 2,106,903 ' UNITED STATES 2,106,903 GAS MIXER Albert Tonkin, Cloquet, Minn., assigner of two thirds> to J. L. Monnahan, Minneapolis, Minn. Application March 27, 1936,'Serial No. '71,185 4 Claims. (Cl. 423-180) This invention relates to gas mixers for internal invention resides ín the air intakev mounted with« combustion engines, and has special reference to in the extension 3, and which is provided with a improvements in one particularly adapted for removable sleeve 2 I-slid into thev extension 3 and use in feeding natural or similar gas to such an which sleeve has a taperedy or conically shaped 5 engine. bore 22; the outlet of the bore in the *outer> end of The principal object of the invention is to pro the sleeve being circular and controlled by the vide a more practical and efficient carburetor for valve 23 which'is reciprocably carried upon the this purpose than heretofore known. piston rod 2li attached to-'the Asleeve piston 25 Another object is to provide such a gas mixer within the cylinder 26. The tapered bore 22' of 10 having means automatically operable by the gas the sleeve 2i nis for the purposeof `regula-ting the mixer when in action and hydraulically controlled. volu-me of air as the valve 23 is reciprocated; Other objects and advantages of the invention that is to say the farther the valve 23 is opened, will appear in the following description thereof. the ratio of the space for admission of the air is Referring now to the accompanying drawing, progressively increased, and, of course, the reverse 15 forming part of this application, and wherein like occurs when the valve is being closed. reference characters indicate like parts. Within the cylinder 26 and upon both sides of Figure l is a vertical central sectional View of the piston 25 is carried suitable oil for modify one of the improved gas mixers. ing the action of the piston when it is operated, Figure 2 is a transverse sectional View on the and as the oil must be transferred from one end line 2--2, Figure l, with portions thereof in ele to the other of the cylinder when the piston is vation for better comprehension. reciprocated a passageway or by-pass 28 is pro My improved gas mixer comprises the main vided, it being obvious that the reciprocation in body portion l having three extensions 2, 3 and ¿I therefrom, the extensions 2 and 4 being axially disposed and of smaller diameter than the body I while the extension 3 is of substantially the same size as the body I; all being cylindrical in construction. A transverse rotatable shaft is indicated at 5 for control of the supply throttle, ..0 and a parallel shaft indicated at 6 passes through the extension il for control of the butterfly valve l, regulating the gas and air fuel supply to the engine, and common to such gas mixers. These two shafts are connected in the usual manner by 35 the link 5 and levers 9 and I0 so as to function simultaneously. The extension 3 embodies an automatic air supply to the gas mixer which is governed hydrau~ lically and will be described later. 40 The gas supply connection is shown at Il, and the gas is fed into the extension 2 of the gas mixer through the port I2 and this port is controlled by the vertically reciprocable valve head I3 carrying the resilient valve cap or seat I4, this valve head 45 being normally held in closed position by the two oppositely disposed expansive springs I5 and I6, the pressure of the spring I5 being controlled by the adjustable plug I1. The lower stem I8 of the valve head I3 extends Within the spring housing 50 I9 which is mounted upon the eccentric 20 keyed to the shaft 5 so that rotation of the shaft 5 will raise and lower the valve head during the throttling of the gas mixer. While this construction of throttling the valve 5;-, may be old, one of the novel features of the instant 5 10 15 20 wardly of the piston rod is accomplished by the vacuum of the engine, while it is held normally outwardly by the expansive spring 21 carried 25 about the piston rod 24, within the innermost end of the cylinder 26. It will be noted that the head of the piston 25 is perforated and normally closed by a small spring controlled washer-like valve 29 which will be released on outward motion of 30 the piston but close on inward motion thereof, and, the cylinder 2S being full of oil, any move ment inwardly of the piston as caused by the suc tion of the engine not shown will necessitate travel of the oil from the spring engaged side of 35 the piston through the port or passageway 28 to the opposite end of the piston, whereas when re turn action of the piston occurs the oil will readily pass through the perforated head thereof. As a control means for the passage of oil from one end 40 of the cylinder to the other I have shown the manually operated needle valve 29, the adjustment of which will regulate the flow of oil through the by-pass 28. It will be noted, too, that the cylinder 26 is an 45 extension of the cup-like pervious member 30 which is screw-threadedly mounted upon the outer extremity of the extension 3 and forms holding means for the sleeve 2I, having the frus tro-conically shaped bore 22 therein. 50 From the above it is evident that I have pro vided an eñìcient and practical form of gas mixer designed for use in connection with natural or other similar gas and having an automatically adjustable hydraulically controlled air supply 55 2 2,106,903 therefor, which forms a principal novel feature of the invention. Having thus described my invention, what I claim and desire to secure by Letters Patent, is: 1. The combination with a fuel gas and air mixer having a main mixing chamber provided with gas inlet and discharge ports, an air inlet chamber communicating with said main mixing chamber intermediate of said gas inlet and dis charge ports, a valve for control of said air inlet 15 including a piston carrying rod, a cylinder within which said piston reciprocates, an expansive spring within said cylinder intermediate of the piston and head of the cylinder towards said valve to normally keepv the latter closed, said cylinder being adapted to contain a body of oil positioned upon both Sides of said piston, an oil by-pass from one end of the cylinder to the other and a manually adjustable valve within said by 20 pass to regulate the flow of oil from one end of said cylinder to the other and thus control the action of said valve. 2. The combination with a gas mixer of the character described having a main mixing cham 25 ber provided with gas inlet and discharge ports,an airl inlet chamber communicating with said main mixing chamber intermediate of said gas inlet and discharge ports, a valve to control the amount of air passing through said air inlet in 30 cluding a piston carrying rod, a cylinder within which the piston reciprocates, said cylinder being adapted to contain a body of oil to retard the action of said piston, and spring means to hold the valve normally closed. 3. 'I'he combination with a gas mixer of the Ul character described having a main mixing cham ber provided with gas inlet and discharge ports communicating therewith, an air inlet chamber intermediate of said gas inlet and discharge ports, a Valve to control the amount of air passing 10 through said air inlet, a cylinder adapted to con tain a body of oil, a piston Within the cylinder, a rod connecting the valve and piston, means for holding the valve normally closed, said piston being retarded by the action of the oil in said 15 cylinder, and means-to vary the retarding in fiuence of said oil; 4. The combination with a fuel gas and air mixer having a main mixing chamber provided with gas inlet and discharge ports, an air inlet 20 chamber communicating with said main mixing chamber, a valve for control of said air inlet in cluding a piston carrying rod, a cylinder adapted to contain a body of oil and Within which said piston reciprocates, a spring about the rod to- normally keep the valve closed, and a manually adjustable oil by-pass to regulate the flow of oil therein from one end of the cylinder to the other and thereby control the action of the valve. 30 ALBERT TONKIN.