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Publication numberUS2074401 A
Publication typeGrant
Publication dateMar 23, 1937
Filing dateAug 16, 1934
Priority dateAug 21, 1933
Publication numberUS 2074401 A, US 2074401A, US-A-2074401, US2074401 A, US2074401A
InventorsPeter Kauzal Gabriel
Original AssigneeJect In Ltd
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Drench syringe for veterinary use
US 2074401 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

March 23,1931 ,G. P. KAUZAL I 2,07 ,4

DRENCH SYRINGE FOR VETERINARY USE Filed Aug. 16, 1934 llllllllllllllll nmuuunm Patented Mar. 23, 1937 UNITED STATES PATENT OFFICE DRENCH SYRINGE FOR VETERINARY USE Application August 16, 1934, Serial No. 740,192 In Australia, August 21, 1933 1 Claim.

This invention consists in an improved construction of drench syringe and embodies features of particular characterization in relation to the handpiece, the piston driving means, and the adjustment of the stroke of the piston for varyejector stroke than is obtainable with finger trigger mechanism.

The accompanying drawing illustrates a form of the device embodying the invention.

The barrel I I may be bored in a casting, which is preferably integral with the pistol grip handpiece I2 as shown, or it may be a tube secured by screwing or by other means to the butt of the handpiece. The nozzle I3 is screwed into the fore end of the headstock of the syringe, and a delivery valve I4 with a back spring I! is accommodated in a pocket I9. An intake valve I5 with back spring 2| is accommodated in a tubular stem 23 which is screwed into the headstock, access being given to the spring and valve by means of a screwed plug 22. I6 is a nipple on the top end of the stem 23 to which nipple is connected a flexible hose (not shown) which leads from a knapsack reservoir. 25 and 24 are passageways which connect the barrel with the pocket I9. A piston 28 is pivotally connected at 30 to a connecting rod 29, the other end of which is pivotally connected at 3| to the top end of an actuating grip lever 32.

This lever is fulcrumed at 36 in the lower part of the handpiece I2, its bell crank 31 being housed in a rearwardly open slot formed between the sides of the handpiece I 2. One end of the bell crank is attached to a spring 38 which is anchored at 39; this spring influences the lever backward to retract the piston.

The connecting rod 29 is screwed for a portion of its length, a fiat being formed on the screwed portion to receive graduation marks 33 and corresponding figures for indicating the amount of dose. Regulation of the dosage is effected by screwing a knurled nut 34 up to the mark on the scale indicating the desired dose, and locking the nut 34 in the required position by a knurled nut 35. The displacement of the piston 28 is limited by the contact of the knurled nut 34 with the face 40 of a ring cap 26 which is screwed on to the back end of the barrel I I, and locked thereon by a grub screw 21.

The ejector operation is performed by the pressure of the operators hand on the lever 32 whereby the piston is driven inward against the pull of the spring 38.

What I claim as my invention and desire to secure by Letters Patent is:-

A gravity fed stock drenching syringe comprising a cylinder open at its rear end, a nozzle at its fore end, inlet and delivery valves fitted in the butt of the nozzle, a piston slidable in the cylinder, a piston rod gudgeoned to the piston and extending through the open rear end of the cylinder; a variable check mounted directly on said rod and adapted for axial movement therealong for regulating its range of movement, a bracket depending from one side of the cylinder body formed as a fingergrip, a bell crank fulcrumed near its center point in said bracket and having one arm articulated to the back end of the piston rod, and a spring shielded by the bracket and acting on the free end of the other arm of the bell crank and adapted for moving the bell crank to retract the piston rod, said articulated arm being disposed in alignment with said bracket, on the opposite side of said finger grip bracket from the nozzle, and adapted to be displaced by the palm of the hand in substantially the direction of movement of the piston rod, to apply forward, substantially rectilinear movement to the latter, with substantially no loss through lateral components of force.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2567895 *Aug 19, 1948Sep 11, 1951Jay Rommer JackDevice for ejecting an opaque medium in the soft parts of the body for x-raying purposes
US2591443 *Dec 15, 1947Apr 1, 1952Glen M LarsonDevice for determining capillary fragility
US2821195 *Jul 6, 1954Jan 28, 1958Duncan M MclintockLiquid-dosing instruments
US3144867 *Aug 24, 1962Aug 18, 1964Trupp BernardDental prophylactic
US3682175 *Oct 1, 1969Aug 8, 1972Paul HalterSquirting gun and dosing device therefor
US4020838 *Apr 20, 1976May 3, 1977N.J. Phillips Pty. LimitedAnimal dosing syringe
US4033346 *Aug 9, 1976Jul 5, 1977N. J. Phillips Pty. LimitedAdjustment device for drench guns or syringes
US4245757 *Jul 13, 1979Jan 20, 1981N. J. Phillips Pty. LimitedDose adjustment mechanism for a drench gun
US4654027 *Oct 30, 1985Mar 31, 1987Dragan William BVascular dilating device
US4808165 *Sep 3, 1987Feb 28, 1989Carr Ann MInflation/deflation device for balloon catheter
US4968303 *Sep 27, 1988Nov 6, 1990Eli Lilly And CompanyHypodermic syringe holder
US5188610 *Oct 18, 1991Feb 23, 1993Vetrisystems, Inc.Fluid dispensing apparatus
US5228883 *May 2, 1991Jul 20, 1993Eli Lilly And CompanyPortable drug delivery system
US5288285 *Feb 16, 1993Feb 22, 1994Carter Wade PHolder for filling syringe with radioactive liquid
US5336201 *Jun 29, 1992Aug 9, 1994Baxter International Inc.Syringe driving apparatus
US5350365 *Aug 2, 1993Sep 27, 1994Roberto De Godoy MoreiraSurgical instrument for injecting/removing non-solid substances
US5425528 *Feb 1, 1994Jun 20, 1995Vetrisystems, Inc.Fluid dispensing apparatus
US5807340 *Jun 6, 1995Sep 15, 1998Pokras; Norman M.Self refilling I.V. syringe
US6616634Sep 21, 2001Sep 9, 2003Semler Technologies, Inc.Ergonomic syringe
US7976512Dec 16, 2008Jul 12, 2011Mcclintock Scott AndrewSyringe control pistol
US8449494Dec 16, 2009May 28, 2013Cook Medical Technologies LlcApparatus and method for preparing foam
US8986247 *Jun 29, 2012Mar 24, 2015Stuart H. MillerInsufflation pump
US20130006176 *Jun 29, 2012Jan 3, 2013Miller Stuart HInsufflation pump
U.S. Classification604/186, 604/208, 604/223
International ClassificationA61D7/00, G01F11/02
Cooperative ClassificationA61D7/00, G01F11/026
European ClassificationA61D7/00, G01F11/02B8B