Apparatus for measuring gaseous quality of a substance

Claim 2

APPARATUS FOR DIRECTLY MEASURING THE PERCENTAGE BY WEIGHT OF ACID CONTAINED IN LIQUID SAMPLE OF PREDETERMINED VOLUME COMPRISING: A SUPPORTING MEANS, A SEALABLE FLASK REMOVABLY MOUNTED IN A FIXED POSITION ON SAID SUPPORTING MEANS AND WHEREIN SAID SAMPLE AND AN AGENT ARE TO MIXED TO EFFECT EVOLUTION OF A GAS, SAID FLASK HAVING A MOUTH THROUGH WHICH SAID AGENT IS DEPOSITED PRIOR TO SEALING OF SAID FLASK, REMOVABLE SEALING MEANS FOR INSERTION INTO SAID MOUTH TO SEAL SAID FLASK, SAID SEALING MEANS HAVING A FIRST OPENING AND A SECOND OPENING, SAMPLE SUPPLYING MEANS SLECTIVELY OPERABLE TO INJECT SAID SAMPLE INTO SAID FLASK AFTER SAID FLASK IS SEALED, SAID SAMPLE SUPPLYING MEANS BEING CLOSED TO PREVENT GAS ESCAPE THERETHROUGH AND BEING REMOVABLY INSERTABLE INTO SAID FIRST OPENING IN SAID REMOVABLE SEALING MEANS IN SEALED RELATIONSHIP, SAID FLASK HAVING AN AIR SPACE THEREIN WHICH TENDS TO VARY IN VOLUME DEPENDING ON THE AMOUNT OF AGENT DEPOSITED IN SAID FLASK OR THE EXTENT OF INSERTION OF SAID SEALING MEANS IN SAID MOUTH OR BOTH, TUBE MEANS HAVING ONE END CONNECTED TO SAID SECOND OPENING IN SAID SEALING MEANS AND HAVING ITS OTHER END EXPOSED TO ATMOSPHERE, SAID TUBE MEANS COMPRISING A FLEXIBLE INTERMEDIATE PORTION AND A VERTICALLY MOVABLE UPRIGHT LEG PORTION AT ITS SAID OTHER END, SAID UPRIGHT LEG PORTION HAVING A TRANSPARENT PORTION, AN INDICATOR LIQUID IN SAID TUBE MEANS PROVIDING A MENISCUS IN SAID MOVABLE UPRIGHT LEG PORTION WHICH IS VISIBLE THROUGH SAID TRANSPARENT PORTION, SCALE MEANS MOUNTED IN FIXED POSITION ON SAID SUPPORTING MEANS AND INCLUDING A FIXED STARTING POINT AND FIXED GRADUATED INDICIA DIRECTLY INDICATIVE OF PERCENTAGES BY WEIGHT OF ACID POSSIBLY CONTAINED IN A SAMPLE, AND ATTACHMENT MEANS FOR RELEASABLY SECURING SAID MOVABLE UPRIGHT LEG TO SAID SUPPORTING MEANS IN DESIRED FIXED ADJUSTMENT POSITIONS, SAID MOVABLE LEG PORTION BEING RELATIVELY MOVABLE VERTICALLY WITH RESPECT TO SAID SCALE MEANS TO INITIALLY EFFECT ALIGNMENT OF SAID MENISCUS WITH SAID STARTING POINT AFTER SAID FLASK IS SEALED AND PRIOR TO EXPOSURE OF SAID SAMPLE TO SAID AGENT FOR ADJUSTMENT PURPOSES TO COMPENSATE FOR VARIATIONS IN VOLUME IN THE AIR SPACE IN SAID FLASK, SAID INDICATOR LIQUID BEING SUBSEQUENTLY DISPLACEABLE IN RESPONSE TO GENERATION OF GAS IN SAID SEALED FLASK SO THAT SAID MENISCUS MOVES INTO ALIGNMENT WITH THE SAID INDICIA ON SAID SCALE MEANS TO PROVIDE A DIRECT INDICATION OF THE PERCENTAGE BY WEIGHT OF ACID PRESENT IN SAID SAMPLE.

Claim 3

Apparatus according to claim 1 including second attachment means on said supporting means for holding said sealing means when the latter are removed from said flask.

Claim 4

Apparatus according to claim 1 wherein said means for providing said sample to said flask comprises a syringe for holding a predetermined quantity of liquid.

Claim 5

Apparatus according to claim 1 wherein said indicator liquid is colored.

Claim 6

Apparatus for directly measuring the percentage by weight of acid contained in a liquid sample of predetermined volume comprising: a supporting means including a base and an upright member, a sealable flask removably mounted in a fixed position on the base of said supporting means and wherein said sample and an agent are to be mixed to effect evolution of a gas, said flask having a mouth through which said agent is deposited prior to sealing of said flask, removable flexible sealing means for insertion into said mouth to seal said flask, said sealing means having a first opening and a second opening, sample supplying means in the form of a syringe selectively operable to inject said sample into said flask, said sample supplying means being closed to prevent gas escape therethrough and being removably insertable into said first opening in said removable sealing means in sealed relationship, said flask having an air space therein which tends to vary in volume depending on the amount of agent deposited in said flask or the extent of insertion of said sealing means in said mouth or both, tube means having one end connected to said second opening in said sealing means and having its other end exposed to atmosphere, said tube means comprising a first rigid tubular member removably insertable in said second opening in said sealing means, a flexible intermediate portion detachably connected at one end to said first rigid tubular member and a second rigid vertically movable upright tubular member detachably connected to the other end of said flexible intermediate portion, said second tubular member having a transparent portion, an indicator liquid in said tube means providing a meniscus in said second tubular member which is visible through said transparent portion, scale means mounted in fixed position on said upright member of said supporting means and including a fixed starting point and fixed graduated indicia directly indicative of percentages by weight of acid possibly contained in a sample, and attachment means on said upright member of said supporting means for releasably securing said second tubular member to said upright member of said supporting means in desired fixed adjustment positions, said second tubular member being relatively movable vertically with respect to said scale means to initially effect alignment of said meniscus with said starting point after said flask is sealed and prior to exposure of said sample to said agent for adjustment purposes to compensate for variations in volume in the air space in said flask, said indicator liquid being subsequently displaceable in response to generation of gas in said sealed flask so that said meniscus moves into alignment with the said indicia on said scale means to provide a direct indication of the percentage by weight of acid present in said sample.

Claim 7

Apparatus for directly measuring the percentage by weight of acid contained in a liquid sample of predetermined volume comprising: a supporting means including a base and an upright member, a sealable flask removably mounted in a fixed position on the base of said supporting means and wherein said sample and an agent are to be mixed to effect evolution of a gas, said flask having a mouth through which said agent is deposited prior to sealing of said flask, removable flexible sealing means for insertion into said mouth to seal said flask, said sealing means having a first opening and a second opening, sample supplying means in the form of a syringe selectively operable to inject said sample into said flask, said sample supplying means being closed to prevent gas escape therethrough and being removably insertable into said first opening in said removable sealing means in sealed relationship, said flask having an air space therein which tends to vary in volume depending on the amount of agent deposited in said flask or the extent of insertion of said sealing means in said mouth or both, tube means having one end connected to said second opening in said sealing means and having its other end exposed to atmosphere, said tube means comprising a first rigid tubular member removably insertable in said second opening in said sealing means, a flexible intermediate portion detachably connected at one end to said first rigid tubular member and a second rigid vertically movable upright tubular member detachably connected to the other end of said flexible intermediate portion, said second tubular member having a transparent portion, an indicator liquid in said tube means providing a meniscus in said second tubular member which is visible through said transparent portion, scale means mounted in fixed position on said upright member of said supporting means and including a fixed starting point and fixed graduated indicia directly indicative of percentages by weight of acid possibly contained in a sample, and attachment means on said upright member of said supporting means for releasably securing said second tubular member to said upright member of said supporting means in desired fixed adjustment positions, said second tubular member being relatively movable vertically with respect to said scale means to initially effect alignment of said meniscus with said starting point after said flask is sealed and prior to exposure of said sample to said agent for adjustment purposes to compensate for variations in volume in the air space in said flask, said indicator liquid being subsequently displaceable in response to generation of gas in said sealed flask so that said meniscus moves into alignment with the said indicia on said scale means to provide a direct indication of the percentage by weight of acid present in said sample.