Патент USA US2122243код для вставки
>Jumzs,1sa3ß. J_B¢NHARD Y l2,122,243 PRESSURE -GAUGEA FOR INTERNAL - COMBUS'I‘IOÑ> MOTORS Filed. Feb, 18, 1937 Patented June 28, 1938 NlTjED 2.122.243 PRESSURE canes ron netrunner. cous v 'rioN morons « .lohn Bonnard, West New York, N. J. I Application February i8, 193'?, Serial No. 126,421 2 Claims. il is attached on the lower end of the member lil and has a threaded portion I la adapted to engage This invention relates to new and useful im provements in a pressure gauge for internal com bustion motors. ‘ The invention has for an object the construc-' tion of a pressure gauge which is adapted to be 5 substituted for each of the spark plugs of an auto mobile engine or other engine and to~register the into the spark plug opening of one of the cylin ders of the motor. A tubular bushing .l2 is at tached upon the upper end of the member l0 and is adapted to support a pressure gaugevlâ. pressure built; up in the cylinders during the A one Way valve It is mounted within the bot torn bushing il. Another one Way valve l5 is running of the engine on some of its cylinders, or during such time when the engine is being turned over, either manually or mechanically. The` purpose of this test is to locate trouble in mounted within the top bushing i2. A three way cock I6 'is associated with the top bushing .for controlling the passage of air to the gauge; The bushing ll has a reduced end ilb over tion of a pressure gauge which is characterized by a tubular member forming a compartment, a pressure valve mounted in one end of the tubular supports a washer lil' which serves as a “stop” member, and an arrangement for mounting the valve seat i8 is mounted within the bushing il and the valve tél comprises merely a sphere adapted to seat upon one end of the seat mem ber it. The valve Hl is limited in the distance it may move ofi the seat by the spring ita. The valve Ell permits pressure to pass upwards into the compartment llla and prevents backwash or' 25 the engine, such as excessive leaking pistons and» which the tubular member l@ seats. A pin il is engaged through the tubular member and bush valves. The invention has for an object the construc- ' ing for attaching these parts together. This pin 20 other end of the tubular member in place of a removed spark plug of the automobile or the other engine. . Still further the invention proposes a novel construction of valve associated with the tubular N) Ol member so as to hold pressures built up therein. 30 35 40 for one end of a coil spring ida. The other end of spring lila presses against the valve ball lil. A It is thus possible to register the highest pres the pressure. sure without requiring fast reading of the gauge due to rapid fluctuations of the ordinary pres The bushing l2 is formed with a reduced por tion i2a over which the top end of the tubular member lil engages. A valve seat i9 is supported upon the bushing l2 and the valve l5 is coopera 30 tive with this seat. Pins 20' engage through the tubular member i@ and the bushing l2 for con sures within a motor cylinder. Still further the invention proposes an arrange ment by which the valves may be temporarily in operative when desired so that the fluctuating pressures may be examined. For further comprehension of the invention, . necting these parts together. A coil spring l5’ and of the objectsl and advantages thereof, ref is provided to press the valve ball l5 against valve'seat i9. The top end of the bushing l2 has 35 erence will be had to the following description a threaded bore 2l into which the pressure gauge and accompanying drawing, and to the appended i3 may be engaged. claims in which the various novel features of the gauge are immaterial and therefore Will not be The details of the pressure invention are more particularly set forth. given in this specification. Inlthe accompanying drawing forming a. ma terial part of this disclosure: The cock valve i@ is a three way valve. It 40 controls a vent passage 22 through the side of Fig. 1 is a -side elevational View of a pressure ' the bushing i2 into the atmosphere. gauge constructed according to this invention. Fig. 2 is a vertical sectional view of the gauge shown in Fig. 1. _ through the bushing to the pressure'gauge i3. The cock l@ when in the position as shown in 4:5 ' Fig. 3 is a horizontal sectional View taken on the line 3_3 of Fig. 2. Fig. ’i is a horizontal sectional view taken on the line ?l~-ß of Fig. 2. Fig. 5 is a fragmentary vertical sectional View similar to Fig. 2 but illustrating a modification or' the invention. It also con trols a passage 23 from the tubular member lll ' Fig. 2 has the tubular member l@ and the gauge i3 connected with atmosphere. It may be ro tated through 90° or 180° to control the-pressure as desired. The purpose for having the two valves lil and l5 with the chamber lila interposed therebetween is to prevent fluctuations of the en gine from directly acting upon the gauge i3 to The'pressure gauge for motors, according to » cause rapid changes in the gauge preventing it this invention, comprises a tubular member l@ from being read properly. With each explosion of the engine a fast sharp moving pressure is set 55 forming a compartment i632'. A tubular bushing 2, p L 2,122,243 up which would cause sharp changes in the pr - . While I have illustrated end described the pre sure gauge. When this sharp moving pressure ferred embodiments of my invention, it is to be4 passes the valveflid- and enters the chamber |02. understood that I do not limit myself to the pre it has ample spacewithin which to lose its jerky motion-and smooth out before passing the valve I5 to enter the gauge I3 atan even pace to per-A cclse constructions herein disclosed and the right is reserved-to all changes and modiilcations com ing within the scope of the invention as deñned mit the gauge to accurately measure its velocity. ' in the appended claims. l The operation of the device is as follows: Having thus described `my invention, what‘ï A spark plug of an internal combustion en 10 gine or similar engine is removed and in its claim as new, -and desire to secure by United States Letters Patent is:: stead the pressure gauge is mounted. The 1. A pressure gauge- for internal ,combustion threaded endV Ilß is» screwed into the threaded . engines or the like, comprising a. tubular member opening which ‘previously held the spark' plug. The engine is then ‘operated on its other cylin 15 ders. The pressure built up within the cylinder will be forced i'nto the compartmentV Illa. "I'he . valve I4 lifts to permit the pressure to enter, forming a compartment, ua tubular bushing at tached on the lower end of said compartment and threaded for engaging _into the spark plug 15 opening of one of the cylinders of said engine, a tubular bushing attached on the upper end of said tubular member and adapted to support a up'in the compartment lüa _the valve l5 will lift pressure gauge, a one way valve in the bottom but prevents exit. “As the pressure is being built 20 and permit the pressure to reach the gauge i3. «In order to do this it is necessary that the cock I6 be in a position turned 180° from the position shown lnVFig. 2. The gauge I3 will ~`how the maximum pressurel produced in the cylinder of the engine. 25 'I'he cock i6 may then be turned to release the bushing for controlling the entrance of pressure 20 into said -compartment, a. one way valve in said topbushing for controlling the entrance of pres- . sure from said compartment to said pressure gauge and so prevent the transmission of possible ñuctuations, and pressure inv said compartment, pressure withinJ the- compartment IUS and the` and a three Way cock valve for controlling said _gauge which then discharges into the atmos- j pressures to connect A with said gauge or with at phere. ' ‘ f . In' Fig. 5 a modification of the invention has .30 been disclosed in which an arrangement is pro vided tojhold the'valves inoperative so that the - mosphere, each tubular _bushing having a re duced portion over which the ends of the tubular >member engagé, and a pin engaged through these 30 ends for holding the parts together, said pin fluctuating pressure within the cylinder may be serving as a. stop for said valves. examined. The arrangement4 consists in each of 2. A pressure gauge for internal combustion en the valves` I 4 and I5 being provided with a de gines or the like, comprising a tubular member pressible plunger 24 arranged to hold the valves '-forming -a compartment,_a tubular bushing at against the'side wall ofthe tubular bushing;- and tached on ïthe lower end of said compartment so, inoperative. ` The plunger 26 is normally urged into an inoperative position by a spring 25 ~which acts against a. flange 26. formed on the and -threaded for engaging into the spark- plug opening of one of the cylinders of said engine, avtubular bushing f attached on the upper end 40 plunger'Zä and a'plug 2l mounted upon the bush-r, of said „tubular member and adapted to support ing. A packing gland 28 is. also associated with a pressure gauge, a one way valve in the bottom the plunger 24 -to prevent leakage of pressure. bushing for controlling the entrance of pressure The plungers 2t normally extend to the exterior into said compartment, _a rone way valve in said so that they may be depressed. . top bushing for controlling the entrance of pres 45 The operation of the modiiled form of the -in- ~ sure from said compartment. to said pressure gauge and so prevent the transmission of pos vention is identical to the 'preferred formexcept for -the fact that one or both of the plungers 24 may be manually- depressed for incapacitating one or both of the valves-»the valves I4 and i5. 50 The gauge will now show the ñuctuating pressure _ which maybe examined with necessary instru ments, or the naked eye. » Another test for the internal combustion motor> would be to remove all ,of the spark plugs at one 55 time and to substitute pressure gauges as de scribed in this invention for each of the spark plugs. It -is then necessary that the motor be manually turned over or mechanically turned over for ascertaining its condition.> sible iluctuations, and pressure in said compart ment, and a three way cock valve for controlling said pressures to connect with said gauge or with atmosphere,l each tubular bushing havinga‘re ducedv portion over which the ends of the tubular member engage, apin/ engaged through these ends «for holding the parts together, and a plate on said pin against whichsaid valve abuts for acting as a stop for said valve. JOHN BONHARD.