Патент USA US2117170код для вставки
Patented May 10, 1933 ‘ 2,117,170? UNITED STATES earner cries HYDROMETER BARREL PLUG John Z. Hoyer, Conshohocken, Pa... assignor to Kimble Glass Company, Vincland, N. 5., a corporation of Illinois ‘ Application September 18, 1936, Serial No. 101,511 1 Claim. (01. 265—45) This invention relates to hydrometers of the tending ?ange 22 which engages the adjacent type in which the liquid to be tested is drawn into free end of the barrel to form a liquid tight joint. a transparent barrel and retained therein during The body portion of the plug which ?ts snugly the testing operation. Within the barrel H1 is provided in its outer pe One of the primary objects of this invention riphery with anv annular groove 24, this groove 5 is to provide a plug for one end of the barrel through which the liquid to be tested may be readily drawn into the barrel, the plug, however, being so constructed as to prevent the liquid from in trickling out of the barrel during the testing operation. A further object of the invention is to provide a plug of the above mentioned character which will be simple in construction and capable of 1-? economical production on a commercial scale. Numerous other objects and advantages of this invention will become more apparent as the fol- lowing description proceeds particularly when reference is had to the accompanying drawing 20 wherein Fig. l is an elevational view of a hydrometer showing a plug constructed in accordance with the teachings of this invention associated with the Same; 25 being preferably spaced from the outer end of the plug about three-quarters of the length of the plug. Communicating with the annular groove 24 is a passage 26 which extends inwardly toward the center of the plug and communicates 10 at its inner end with a bore or passage 28 which Opens through the outer end of the plug. At a point diametrically opposite the passage 26 the plug is provided with a second passage 30 which is relatively short and which communicates at 1.5 its one end with the annular groove 24 and at its other end with a passage 32 which opens through the inner end of the plug and thus communicates with the interior of the barrel. A nipple 34 formed of hard rubber or the like @5 preferably secured- in the passage 23 and has Its one end projecting beyond the outer end of the plug’ the suctlon up M bemg Sleeved Over and secured to the projecting end of thisnipple as Fig. 2 is a fragmentary sectional view of a por-, clearly illustrated m Fig" 5 of the drawmg‘ . 25 tion of the Structure shown in Fig 1; .1’ _ In using the device, the free end of the suction Fig. 3 is a transverse sectional view taken sub- up M may be.mserted m th‘? Solutlon to be tested stantia’uy on the line 3__3 of Fig 2; ' and the suction bulb manipulated to draw the Fig 4 is a transverse sectional .view taken sub30 stantiany on the line 4__4 of Fig‘ 2; and . . . . sohmon upwardly Into the bar-r 61 ID‘ It W111 be apparent that the solut1on W111 pass upwardly 30 . throu h assa e IS in the suction ti throu h Fig. 5 IS a fragmentary longitudinal sectional boresgzg pand gzs and into the annulaii. passage view taken substantially on the line 5-5 of Fig.2. formed between the inner wall of the barrel m Referring to the drawing wherein like refer- and the plug by the annular groove 24' The ]iq_ ence characters designate correspondlng parts 35 throughout all views, the numeral l0 designates uid will ?ow around this groove and then be drawn into the barrel m by Way of passages 30 35 a barrel which is preferably formed of glass or some other suitable transparent material and which is adapted to receive the liquid 01‘ Solution 40 to be tested. In accordance with the usual practioe, the barrel is provided at its one end with a liquid Suction and eXpelling bulb‘ 5'2 and at its other end with an elongated suction tip M which is preferably ?exible and which is provided with 45 the passage '9 through Which liquid may be drawn into the barrel Disposed in the barrel is a hydrometer float '3 of any Suitable CO-HStI‘UCi- and 3z_ After the desired quantity of the solution has tion. been drawn into the barrel it), the suction tip may be removed from the solution to be tested and the 40 reading taken on the hydrometer ?oat The pas sages in the plug 25 which place the suction tip in ‘communication with the interior of the barrel are so arranged that‘ the barrel does not com municate directly with the suction tip, with the 45 result that liquid will not trickle from the interior of the barrel out through the suction tip during the testing operation. Additionally, it might be The numeral 20 designates a plug by which the 50 suction tip M is secured to and placed in communication with the interior of the barrel H). This plug is formed of some compressible material such as rubber or the like whereby it may be noted that the passages in the plug are so ar ranged as to form an air pocket within the plug 50 which effectively seals the liquid in the hydrom eter barrel making it necessary to compress the bulb 52 to expel the liquid from the barrel after snugly ?tted in the open end of the barrel I0 and the plug is further provided with a laterally ex- the testing is completed. While one embodiment of the invention has 55 2 2,117,170 been described with some detail, it is to be under stood that the description is for the purposes of illustration only and is not de?nitive of the limits of the inventive idea. The right is reserved to make such changes in the details of construction and arrangement of parts as will fall within the purview of the attached claim. I claim: In combination, a hydrometer barrel having an open end, a resilient plug inserted in the open end of said barrel, said plug having an axial pas sage extending from one end of said plug partly ' through said plug, said plug also having a second passage extending from the other end of said plug partly through the plug and being out of alignment with the ?rst-mentioned passage, said plug being further provided with a peripheral an nular groove cooperating with the inner wall of the barrel to form an annular passage and having radial passages connecting said ?rst and second mentioned passages with said annular groove, and an inlet nipple including a stem portion inserted 10 in said ?rst-mentioned passage. JOHN Z. HOYER.