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Publication numberUS1394322 A
Publication typeGrant
Publication dateOct 18, 1921
Filing dateDec 29, 1919
Priority dateDec 29, 1919
Publication numberUS 1394322 A, US 1394322A, US-A-1394322, US1394322 A, US1394322A
InventorsMarshutz Herbert S
Original AssigneeAmerican Thermoware Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Hydrometer-syringe
US 1394322 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

H. S. MARSHUTZ.

HYDROMETER SYRINGE.

APPLICATION FILED DEC. 29.1919.

' Patented Oct. 18, 1921.-

UNITED STATES PATENT OFFICE.

HERBERT S. MARSHUTZ, OF NEW YORK, N. Y., ASSIGNOR T0 AMERICAN THERMO- WARE COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

HYDROMETER-SYRIN GE.

Specification of Letters Patent.

Patented Oct. 18, 1921.

To all whom it may concern:

Be it known that I, HERBERT S. MARSHUTZ, a citizen of the United States, and a resident of New York city, in the county of New Yorkand State of New York, have invented certain new and useful Improvements in Hydrometer-Syringes, of which the following is a specification.

The invention relates to improvements in hydrometer syringes of the type commonly employed for measuring. the density of liqui ds in electric batteries, and for similar purposes, and one object of the invention is to provide a syringe of this character which, without undue expense in its manufacture, shall possess such features as will prevent the syringe from rolling off from a table on which it may be placed and also protect its fragile parts from injury in case the syringe should be inadvertentlydropped on a floor or in the event that it should be roughly placed on a table or other support or otherwise be handled carelessly.

The syringe of my invention, in its preferred form, comprises a tubular transparent glass casing having a contracted lower section, a collapsible bulb on the upper end of said casing, a hydrometer float or element within said casing, a plug within the lower end of said contracted section and a polygonal rubber or elastic plate at the lower end of said plu and adjacent to the lower end of said section and extending laterally to a suflicient extent beyond the plane of the sides of said casing to cotiperate with said bulb in forming a support for the syringe when the same'is placed on a table or the like and hold the fragile .portions of the syringe out of. contact with such table, thereby saving said fragile portions against breakage, and said polygonal plate also serving to prevent the syringe from rolling when placed on a table. The bulb and polygonal plate also cooperateto prevent breakage of the fragile portion of the syringe in case the syringe should be inadvertently dropped or carelessly handled. The afore-' said plug and plate are perforated to receive a glass tube which projects below said plate and receives a piece of tubing to be be inserted into the batteries between the plates thereof. A

The invention will be fully understood from the detailed description hereinafter presented, reference being had to panying drawings, in which igure 1 is a vertical section of a hydrometer syringe embodying my invention;

Fig. 2 is a top view of the same;

Fig. 3 is a transverse section through the samedtaken on the dotted line 3-3 of Fig. 1, an

Fig. 4 is a vertical section showing a modified construction or formation of the plug and polygonal plate, said features being shown in Fig. 4 as having been separately formed and brought together, whereas in the construction presented in Fig. 1 the plug and plate are shown as molded in one integral' piece of rubber.

In the drawings 10 designates the transparent tubular glass casing, 11 the lower contracted section of said casing and integral therewith, 12 the collapsible bulbv on the upper end of said casing, 13 the usual hydrometer float or element within said casing, 14 a plug, preferably of rubber, closely fitting within the lower end of said contracted section of said casing, and 15 a plate of polygonal or irregular edge outline at the lower end of said plug and extending laterally beyond the plane of the sides of said casing and preferably to the plane of the sides of said bulb, as denoted by the line 16 in Fig. 1 and as represented in Fig. 2.

The plug 14 is preferably of rubber and formed with a central longitudinal opening 17 and, on its upper end, with grooves 18 radiating from said opening for the passage of the liquid to and about the lower end of the element 13.

the accom- The plate 15 is preferably integral with the plug 14, the whole being molded in one piece of yielding rubber, and said plate 15 has a central opening 19 alining with the opening 17 in said plug. The plate 15 is of reasonable thickness and fiat and extends laterally at right angles from the circumferential sides of the plug 14, and preferably said plate will be square in edge outline, although it is obvious that said plate may be of other polygonal or irregular outline.

whenever possible, arising from the dropping of the syringe or the rough placing of the same on a table, the jar, under the circumstances, first coming on one of said angular portions and the syringe then rolling over until a flat side edge of said plate becomes, with the bulb 12, a support for the syringe. The plug 14 will tightly fit within the lower end of the section 11 and initially the plate 15 will be adjacent to but not actually against said end of the said section, so that after some use of the syringe, the plug may be advanced to an additional extent into said section, thus taking careof the possible reduction in the diameter ,of the plug due to use and handling and also adapting my invention to glass casings which may not be quite uniform in bore.

I insert a tube 20, preferably of glass, in the alined openings 17, 19 of the plug 14 and plate 15, and this tube is of such diameter that it becomes tightly held in position by the'engagement therewith of the walls of said openings. The tube 20 preferably extends to the upper end of the plug, and it projects below the plate 15 and receives on its downwardly projecting portion a section of rubber tubing 21, which is employed, as usual, for insertion into the liquidof the batteries.

The syringe of my invention will be made use of in accordance with known methods not necessary to describe. The novel fx atures of my syringe reside in the plug 14 and plate 15 and the combination thereof with the other parts of the syringe, and the duties per- I may add however, to what has been stated,

that the plug serves as a stopper for the lower' end of the casin of the syringe and receives and holds the g ass tube 20 and that the plate 15 will assuredly prevent the rollmg of the syringe off from a table or other su ort.

ile I preferably make the plug 14 and plate 15 in one integral piece, I may make the same in two separate pieces brought together, as I represent in Fig. 4, in which, being a modification, I number the plug 22, the plate 23, the glass tube 24 and the rubber tubing 25.

- When the plug 22 and plate 23 are brought together they may be cemented to each other or not, as may be preferred, since they will remain together due to their tight fit on the glass tube 24, said tube thus serving as means for holding the plug and plate in the same relatlon they would hear to each other if made 1n one piece as shown in' Fig. 1.

What I claim as my invention anddesire to secure by Letters-Patent, is-- 1. A hydrometer syringe comprising a tubular transparent casing containing a hydrometer element and having a collapsible bulb on its upper end, an apertured plug fitting within the lower end of said casing, a plate of yielding material at the lower end of said plu and extending laterally beyond the plane of-the sides of said casing and having an irregular edge outline, and a tube extending through and tightly gripped by said plate and plug and exposed at one end to receive a flexible tube, said plate preventing the rolling of the syringe and cooperating with said bulb to support said casing free of a plane surface upon which the instrument may be placed and also to avoid fracture of said casing, and said plate having a width about equal to the diameter of said bulb for maintaining said casing substantially horizontal when the instrument is placed on a flat horizontal table.

2. A hydrometer syringe comprising a tubular transparent casing containing a hydrometer element and havin a collapsible bulb on its upper end, an apertured plug fitting within the lower end of said casing, a plate of yielding material at the lower end of said plug and extending laterally beyond the' plane of the sides of said casing and having a polygonal edge outline, and a tube extending through and tightly gripped by said plate and plug and exposed at one end to receive a flexible tube, said plate preventing the rolling of the syringe and cooperating with, said bulb to suooort said casing free of a plane surface upon which the instrument may be placed and also to avoid fracture of said casing, and said plate having a w1dth about equal to the diameter of said bulb for maintaining said casing substantially hOI'lzontal when the instrument is placed on a flat horizontal table.

bular transparent casing containing a hydrometer element and having a collapsible bulb on its upper end, an apertured plug fitting within the lower end of said casin a plate of yielding material at the lower end of said plug and extending laterally beyond the plane of the sides of said casing and having an irregular edge outline, and a tube extending through and tightly gripped by said plate and plug and exposed at one end to receive a flexible tube, said plate and plug being in one integral piece, and said plate serving to prevent the rolling of the syringe and to cooperate with said bulb in supporting said casing free of a plane surface upon which the instrument may be placed and also in avoiding the fracture of said casing, and said plate having a-width about equal to the diameter of said bulb for maintaining said casing substantially horizontal when the instrument is placedon a flat horizontal table.

4. A hydrometer syringe comprising a tubular transparent casing containing a hydrometer element and having a collapsible bulb on its upper end, an apertured plug fit-' 3. A hydrometer syringe comprising a tuting within the lower endof said caslng, a

plate of yielding material at the lower end of said plug and extending laterally beyond the plane of the sides of said casing and having a square edge outline Whose angular corner portions extend outwardly beyond the plane of the sides of said bulb, and Which plate across its opposite straight parallel sides has a Width about equal to the diameter of said bulb, said plate preventing the rolling of the syringe and cooperating with said bulb to support said casing free of a plane surface upon which the instrument may beplaced and also to avoid fracture of said casing, and said plate-With said bulb being adapted to maintain said casing substantially horizontal 15 when the instrument is placed on a fiat horizontal table.

Si ned at San Francisco, in the county of ban rancisco and State of California, this 20th day of December, A. D. 1919.

HERBERT s. MARSHUTZ.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2439287 *Mar 8, 1944Apr 6, 1948Eitzen Louis CViscosity instrument
Classifications
U.S. Classification73/441
International ClassificationG01N9/00, G01N9/14
Cooperative ClassificationG01N9/14
European ClassificationG01N9/14