DE1950034A1 - Gun for dispensing fluids and the like. as well as dosing device for the same - Google Patents

Description

Dr. F. Zumsteln sen. - Dr. E. Assmann

Dr.R. Koenigsberger - Dipl. Phys. R. Holzbauer

Dr. F. Zumstein jun.

Patantan wfil U B Munich 2, Bräuhausstraße 4 / III

pistol

for administering liquids and the like. As well as Dosing device for the same.

. The invention relates to a pistol, in particular for oral or rectal administration of specific, dosed amounts of a Liquid, e.g. from drug solutions or suspensions, or ' also when rearing for the administration of dosed strengthening, vitamin-containing and other liquids of this type in the form of Solutions, suspensions or pastes are used. The invention relates to furthermore a new type of metering device for such guns.

There are already potion pistols known whose construction is relatively is complicated, and in which the setting of the optionally provided metering device to be quite cumbersome Way done. The use of such potion pistols by untrained people Personnel in the country, e.g. on veils, on which several dozen or even a few hundred pieces on one or a few days Cattle, by one or more people, e.g. a certain drug, but in different doses depending on the species or size of the animal is to be administered, but implies a construction that is as simple as possible and the simplest possible setting for these pistols. Also should Such a pistol should be as little susceptible to repairs as possible, since workshops for repairs are often only in small numbers and / or are available at a great distance.

009817/1391

This object is achieved with the inventive gun, which serves in particular "fcu veterinary for the administration of liquid in certain doses purposes and with a ■ the stroke of sucking a liquid into a recess provided in the gun housing chamber and again ausstossendeh, regulating to a piston rod fixed to piston Doser device, a mouth with outlet valve, and is provided with an actuating handle, wherein the ejecting movement of the piston is carried out by operating the handle by hand and the sucking return movement of the piston by a spring member acting on the handle and the power transmission from the handle to the piston via the fork-shaped upper end of the handle and the piston rod connected to it are accomplished and which is characterized in that the piston rod is hollow and is equipped with a non-return valve closing on the forward stroke of the piston on the end face of the piston seated on it marriage is; The amount of liquid to be expelled is sucked into the named chamber through the interior of the piston rod and the check valve.

Another feature of the invention is that the movement of the piston in one of its two directions of movement ^r is limited by the impact of a stop member belonging to the metering device and connected to the piston rod against a locking member that is also belonging to the metering device and adjustable to the desired stroke volume.

ORIGINAL BATHROOM

0.09817 / 13 * 1-

In a preferred embodiment, this is the desired one Stroke volume adjustable locking member, by means of which the stroke of the piston is either set to a desired suction or The discharge volume can be limited, a locking disk that serves as an impact member and can be adjusted by turning, e.g. a cam disc, which is attached to the inner lateral Pistol housing wall preferably approximately at the height of the aforementioned Piston rod in the area of the - e End position of said stop member n is attached.

Veiter also includes the metering device according to the invention of said locking disk has a position indicating the latter, preferably on the outside of the gun housing wall attached, releasably connected to the locking disk through an opening in the housing wall and the adjusting knob that drives the locking disk when turned. By loosening the button from the locking disc, these parts can the metering device, or just the locking disk can be replaced.

The control button, or another appropriately designed The control element for the metering device is preferably located on the right or left of the side wall of the gun body and at such a height above the Handle the pistol that its actuation if necessary with a pinger from the same hand of the operator takes place, in which the pistol is held so that the other hand remains free to grasp the animal to be treated.

ι 00 9 817/1391 bad original

A special design of the cam disk by attaching several Snap-in surfaces on the edge of the same, and the attachment of, as desired, two, three or more notches for the control button the dosing device allow rapid actuation with some practice the latter device by the operator.

This way of setting the desired dosage is special advantageous, v / eil it with a simple movement and in advance

even see a snap-in device for the operating button can be done without inspection while the gun is being treated Animal after the other in rapid succession is introduced orally or rectally. The animals to be treated appear here 'especially smaller mammals, such as piglets, sheep, goats, vicunas, but

BATH ORIGINAL

009St7 / Tltt

also calves, in question. As valves for the liquid to be charged Chamber are preferably functional cylinder slit valves in every position. See his preferred design of the pistol • Dosages of 10 and 15 ml "per potion portion.

This construction according to the invention is characterized by special features Simplicity both in the training of all individual parts as well their assembly and interchangeability. The items can made of metal, but preferably also plastic material will.

A main advantage of the pistol according to the invention is that in particular simple, easily exchangeable design of the adjustment device for the dosage.

In contrast to known pistols, in which the setting of the Dosing device takes place by adjusting a screw spindle or the like, the dosing setting can be done here by turning the Adjustment button described above caused by an angle corresponding to the desired volume of liquid to be administered will. By this rotation, the locking member, e.g. the aforementioned Cam disc so changed in-its position that an on it is the protruding or striking projection of the by the effect of said spring member away from the outlet opening backwards pressed trigger and thus also the one coupled to the latter, the gun chamber to be filled with the desired amount of potion final piston, be it during its backward movement under spring pressure or, preferably, during its forward movement

"0 0 9 817/1391 bad original

ti J »

by operating the handle, the distance desired in each case

of the aforementioned statement attached to the pistol's notice of termination

lassventil is held, v; ovon turn the in the said ct ^ si hr

\ Chamber einzusaugende {FH depends εsigkeitsvolumen!. -

The invention is not more restrictive of the scope thereof by way of several Embodiments illustrated in the drawings.

FIG. 1 shows a first embodiment of one according to the invention Right side view of the pistol;

Figure 2 shows the same pistol after removing the right housing and the right handle wall and the interior partially in plan view, partly in longitudinal section;

FIG. 5 shows a longitudinal section in the plane III-III perpendicular to the plane of FIG. 2 through the upper part of the pistol; Figure k shows a cross section through Figure 3 along the plane

: Tv-iv; '-. "

Figure 5 shows schematically the interior of the upper part of this embodiment. Approximate form of the pistol according to the invention, but with two of the various positions of the pistol grip shown in FIG

■ J X

Figures 6 Ca), (b) and (c) finally provide various training - ■ - .. formations of the members of the metering cam group;

FIG. 7 shows a side view of a further, preferred embodiment of the pistol according to the invention, as well as a preferred embodiment the metering device for the same; FIG. 8 shows a longitudinal section through the embodiment shown in FIG with piston and handle in suction end position; an exit

| ORIGINAL

009817/1351

" Hi

« I

shock sharing according to a position explained below "10" is indicated by dash-dotted lines;

Figures 9 (a), (b) and (c) show the same section as Figure 8, but with the piston, piston rod and metering device in three further positions "5"»" 15 "explained below. and "25" corresponding discharge end positions; Piston and piston rod as well as some other parts are shown in plan view.

FIG. 10 shows a longitudinal section in the plane XX perpendicular to the plane of FIG. 9 ^a through the rear upper part of the pistol housing, the piston rod and the stop ring being shown in plan view; and

FIG. 11 shows a cross section through FIG. 9a along the plane XI - XI, looking into the rear end of the gun body.

In detail, the pistol is preferably made in one piece Manufactured, e.g. housing 1 and shaft 2 cast from synthetic resin. In the front opening 3 of the housing, the discharge tube ή in particular in the embodiment shown in FIGS introduced by means of its conically widened extension piece 5 and -with the housing by a bayonet lock formed from recess 6 in the housing wall 7 and pin 8 on the in the housing protruding outer wall 9 of the extension piece 5 releasably connected.

As can be seen in particular from Figure 2, in which the opening J opposite rear end of the housing I an opening 10 is provided, in which a flange 12 at its front end formed, serving as a piston rod tube 11 movable to and fro is stored. On the flange 12, the piston 13 is with piston

009-817 / 13 * 1

BAD ORiGINAL

seal I ^ so-fastened that it is in the cylinder wall 9 of the Extension piece 5 can slide hermetically sealing.

The chamber 15, which is closed to the rear by the piston 15 and formed in the interior of the cylinder wall 9 and the ^{extension piece} 5, can be emptied through a non-return valve 16 built into the transition of the extension piece 5 * n daE tube 4. A check valve I7 built into the open end of the piston tube 11 carrying the piston 13 is used to fill the chamber with liquid.

These valves are set so that when the Piston I3 after the extension piece 5 opens the valve 16 and that Valve 17 is closed, while when the piston 15 moves backwards from the extension piece 5, the valve l6 is closed while the Valve 17 opens. As a result, on the backward stroke of the piston 13 Liquid from a storage container, not shown, through a Line hose 18 or the like which opens into the piston tube 11 and on the outside ribbed end 19 of the latter in itself as is known, sealingly pushed on, and through the open Valve 17 sucked into the chamber 15, while the forward stroke of the Piston I3 the amount of liquid sucked in from the chamber 15 at closed valve I7 is expelled through the opening valve l6 and the pipe e.g. into the throat of an animal to be treated (Piston and handle position A in Figure 5).

The forward movement of the piston I3, discharging fluid, becomes accomplished by the handle 20, the In the shaft 2 by one In the Shaft wall detachable, e.g. fastened with a retaining screw 21

009817/1391

BATH ORIGINAL

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Pin 22, is rotatably mounted. In Figures 1 and 2 is located the handle 20 with its two fork-like protruding into the housing formed arms 23, 24 supporting the upper part under the pressure of the leaf spring 26 in the rear end position, the arm 23 with a nose 37 (Pig · 3) against the set to the smallest radius a_ Cam disk 25 comes to rest. The direction of leaf spring pressure is indicated by the arrow labeled P in FIG. 3.

The arms 23, 24 of the handle 20 engage in the recesses 27, 28 between two each formed on the outer wall of the piston tube 11, pairs of strips 29, 30 or 29 ', 30' attached on opposite sides, and thereby hold the piston tube 11 and thus the piston 13 in the rear end position within the ZyIinderwandung 9 of the extension piece 5 firmly. In this in Fig. 2 The position shown contains the chamber 15 the largest possible volume of potion liquid.

If the handle 20 is now withdrawn by hand into the interior of the shaft 2 under the tension of the spring 26, it moves by rotation around the pin 22 the upper part of the handle with the arms 23 * 24 forward and thereby moves the piston 13 inside via strips 30, 30 * the cylinder wall 9 against the front end position A (Fig. 5), the when the rear edge of the handle 31 hits the inner wall of the shaft 2 is reached.

As a result, the contents of the chamber 15 are emptied through the valve 1.6 and the mouthpiece 4.

BAD ORIGINAL

BMW . $

The position of the handle and KoI ten in a toe position with half Kanmerfüllufit; and in the rxit emptying position is schema-

• ■ ....

table shown in Fig. 5, the handle 20 and the piston IJ; in the position for. half load pulled out and shown in the emptying position with dash-dotted lines. Should instead of the full If, for example, only half the dose is administered, the Handle 20 during its return movement under the action of spring 26 in the middle end position H shown in FIG. 5 can be held. This is done by actuating the dosing device 32, which from the cam disk 25 and the into an a. B. square recess 33 in the latter engaging adjustment knob 3 ^ and the detachable bolt and nut connection 36 exists. Latches 35 make it easier to set the adjustment knob 3 ^ to specific, positions corresponding to preferred doses.

The dosing device is used, for example, to achieve the smallest

; Dose by means of the button 3 ² ^ turned so that the one on the button

! eccentrically attached cam disk 25 is directed with its largest radius h (Fig. 3 and 5) towards the piston side. As a result, the handle arm 23 comes with its nose 37 against the edge of the

4 fi2 £ jäiä

disk 25 already in aioerjEittleren position before reaching the iii Fig. 2 end position shown *. »mi. When adjusting the cam disk 2 * j to any "between its largest and smallest radius", for example Ca can; §O ä $ F Grif ^ färnl · S3 and <iamit with the piston 13 on one

■ ■ ί

BATH ORIGINAL

any intermediate position can be stopped, what with appropriate Design of piston and chamber, e.g. a liquid volume corresponds to between half and full volume.

A particularly precise, safe setting to two, three or more specific volumes, without fine-tuning the intervening fourths, can easily be achieved with the appropriate Providing flat segments on the circumference of the cam disc is achieved as shown in Figures 6 (a) to (e).

In Figure 6 (a), the cam has no flattened segments. It is therefore possible to achieve any volume between * '■■ largest filling when setting the smallest cam radius a and - ₍ smallest filling using the largest Noeken radius b.

In Figure 6 (b), however, a preferred embodiment is Cam 25 shown in which the edge of the same two flattened Segments 4o and 41 corresponding to the shortest radius a ^ and Has the longest radius b, against which you can see the contact nose 37 of the Handle arm 23 can lay securely in their position. A deviation in the dosage due to a slight twisting of the cam disk 25 is thus prevented even without notches 35. Figure 6 (c) shows one similar cam disk 25, on which apart from the two flattened Segment edges 4o and 41 for the radii a_ and b a third one, 42, for a position with the middle one lying between a and Ja Radius £ is provided. It can still do the same more settings of the Dcsierungsvorrichtung are provided, however, it is advisable to watch for the sake of easier handling

two yrs or three fs to be satisfied.

009817/1391 ~ *

BATH ORIGINAL

A particularly preferred embodiment of the locking member .- .: ■■ serving cam disk is shown in Figures 8 to 11 »

In the preferred embodiment, the ejection tube H is connected by a union nut 106 to an insert 109, which is preferably made of transparent material, for example transparent synthetic resin (Plexiglas) and which has an external thread 105 on its connector 104. -

Incidentally, in this embodiment, the previously described ψ Ausführunssform corresponding parts bear the same

Reference symbols as in Figures 1 to 5 · They act in . both embodiments in the same way.

The one preferably made with the housing 1 in one piece Pistol barrel 102 is open to the rear end of the housing; the handle 120 is rotatably mounted in it about the pin 122. The leaf spring 126 presses the handle 120 into the rear end position shown in FIG. 8 in the housing 1. Hold it in this position the fork-shaped ends 123, 124, into which the upper end of the handle runs out, and of which one each between the two longitudinal strips

129, 130 or 129 ', I30 ^{1 of} the piston rod 11 is mounted, the ί

ί Piston 10 in its rearmost position in cylinder chamber 15

I- One that sits firmly on the piston rod 11, e.g. as a flange

with her one-piece stop ring 1J7 is included out of contact with the locking device, which is the locking disc 125 This stop ring IJT b & sits on the fiperr disc 125 Zug- '. "·" On the other side of the edge a flattening I38 with a recess 139 made above the axis of rotation of the locking disk 125

009817/1391

^; BATH ORIGINAL

As can be seen in FIGS. 8 to 11, the locking disk 125 is circular and is provided with a central hollow shaft 133 on the disk surface facing the housing wall. The locking disk is firmly connected to the rotary knob 13k seated on the outer wall of the housing by means of a retaining screw I36 guided through the shaft 133, so that the rotary knob and the locking disk are held together rotatably on the outside or inside of the wall of the housing 1. The rotary knob is held in any number of positions by latching 135 or the like. The locking of the rotary knob in the notches 135 is brought about, for example, by a small ball 1 ^ 7 and a spring 148 provided in a recess 146 of the rotary knob. In the embodiment shown in FIGS. 7 to 11, as can be seen from FIG. 7, four different catches are provided which correspond to four different ejection volumes, which are designated on the rotary knob 134 with "5", "10", "15" and "25" are.

The optional discharge of these dosed quantities is effected as follows:

On the side of the locking disk 125 facing the piston rod 11 a locking strip 143 eccentrically located on a chord of the circular disk surface is formed. The locking bar 1 ^ 3 is located so far away from the axis of the locking disk 125 and protrudes so far from the circular surface of the stop ring 137 facing Lock washer 3 25 shows that when the locking bar is positioned below and parallel to the longitudinal axis of the piston rod 11, as shown in FIG.

009817/1381. bad original

* I β Φ $

shows the locking bar on her. facing,

flattened surface of the attachment ring 137, while at Rotation of the preheating button 134 and the locking lever 125 by 180 °, see above that the locking strip 143 in the indicated in Figure 10 at 1 * 1> a Position above and parallel to the piston rod neck, this one Locking strip now thanks to the recess 139 in the stop ring 137 the latter and thus the piston rod 11 can pass, and only the fork arm 123 of the upper end of the handle against the locking bar 143- to the stop koisnit.

The setting mark 144 (FIG. 7) on the outer wall of the housing of the pistol indicates which output volume has been set. If this is the position "25" corresponding to the maximum ejection ^{volume, then the locking disk 125 is in the position shown in FIG. 9 (c} ) a -Ls section along IX-IX of FIG. The locking bar 143, which is in the position designated 143a in FIG. 11, was caused by pushing the handle 120 by hand into the gun barrel 102 and the pressure of the fork arms 123 * 124 on the bars 130, 130 ' Forward movement of the piston rod 11 let the stop ring 137 pass thanks to its recess 139; the forward movement of the piston rod is only ended when the fork arm 123 hits one end of the locking bar l43.

If the rotary knob 134 is rotated by 180 ° so that the position "5" is on the same is opposite the mark 144 in FIG. 7, it is located the locking disk in the position shown in FIGS. 9a * 10 and 11.

ORIGINAL

009817/1311

The locking list 343 is located below and parallel to the piston rod £; enlän.3Eaeh £ e, thus denoted by 14J in the one shown in FIG Position. As a result, the stop pin 137 now hits the Flattening I38 on the other, the position "25" opposite End of the locking bar 143, and the forward movement of the piston rod is stopped after a very short ejection stroke.

If the rotary knob 134 is rotated further by 90 ° so that the position "ΙΟ" is opposite the mark iHk in FIG. 7, the locking bar 1 ^ 3 is in the position 1 ^ 3b indicated by dash-dotted lines in FIG Piston rod 11 is limited by the impact of the entire surface of the flat I38 of the stop ring I37 (in the position 137l>) below the recess 139 on the entire side surface of the locking strip 1 ′ * 3.

If the rotary knob is finally turned so that the position labeled "^" is opposite the mark 1 ^ 4 in FIG. 7, the locking bar 1 ** 3 is in the position shown in FIG. 9b, and the forward movement. the piston rod 11 when the grip 120 is pressed into the pistol barrel 102 is held by the impact of the side surface of the Ar.sclilagrinfres lj $ 7 next to the flattened portion 133 of the same on one side surface of the locking bar ikj.

On the side that overlaps the locking mechanism, there is a change in the housing an opening 45 is provided through which, e.g. using a screwdriver, remove screw 36 or I36, and go Sperroi'j-an and UreLknopf from each other · deleted and possibly replaced verden. can. . . , ...

009817/1381

. * ■ = -. *; /: -; - \ λ ■ BAD ORIGINAL

Claims (1)

1 Λ Claims ' lj Pistol for the administration of liquid in certain doses with a dosing device (32) which regulates the stroke of a piston (13) which is attached to a piston rod / 11) and which draws in or pushes the liquid into a chamber (15) provided in the pistol housing (1) , 132), a mouth with an outlet valve (16) and an actuating handle (20, 120), the ejecting movement of the piston (13) taking place by actuating the handle (20, 120) by hand and the sucking back movement of the piston. (13 ) by a spring element (26, 126) acting on the handle (20, 120) and the power transmission from the handle (20, 120) to the. Piston (13) on the fork-like configured upper end of the handle (20, 120) and the associated piston rod (11) accomplished v / ground, characterized in that the piston rod (11) Hobl ^a usgebildet and on the end face of the person sitting on her . Piston (13) is provided with a non-return valve (17) which closes on the forward stroke of the piston, the amount of liquid to be expelled being sucked through the interior of the piston rod (11) and the non-return valve (I ¹ J) into said chamber (15). ·; 2. Pistol according to claim 1, characterized in that the movement of the piston in one of its two directions of movement is limited by the impact of a stop member connected to the piston rod '23, 123, 137) against a locking member '25, 125) which is adjustable to the stroke volume is. . 00 9817/1391 '.-. ^{BATH ORIGMAL} • · • · · I 3 · Pistol according to claim 2, characterized in that the on the desired stroke volume adjustable locking member as a Impact member serving or carrying an impact member through Rotating adjustable locking disc (2p, 125) is available. 4. Gun according to claim 2 or 3, characterized in that jinner en ... the said locking device on the side of the pistol housing device approximately at the level of said piston rod (11) in the area between the rear end position of the stop member and the rear End position of the piston is attached. 5. Pistol according to one of claims 2, 3 or 4, characterized in that the metering device (32, 132) in addition to said locking washer (25 »125) is attached to the outside of the pistol housing wall, which indicates the position of the latter the locking disk (25> 125) releasably connected through an opening in the housing wall and the locking disk when rotating includes adjusting knob (JA, 13 ^), whereby the entire metering device can be exchanged for another by loosening the button from the locking disk . 6. Pistol according to one of claims 2 to 5> characterized in that the piston movement is limited by the impact of the stop orcan serving upper end of the handle (23) at the suction Return movement of the piston takes place against the locking element (25) attached to the rear of the handle end. 009817/1391 BATH ORIGINAL 7 · Pistol according to one of claims 2 to 5 »characterized in that the limitation of the piston movement, depending on the setting of the locking element, by the impact of either a sight ring fixed to the piston rod; '' 137) or the upper end of the handle (123) in the ejecting forward movement of the piston against the forward of the stop ring or the upper end of the handle lying on impact member (143.) "des,
/ Blocking organ (125) takes place. 8. Dosing device for use in guns for dispensing of liquid in certain doses, with a suction of the liquid into a chamber (15) provided in the gun housing (1) and again ejecting, on a piston rod (11) attached piston (13) and a mouth with outlet valve (16) and a Actuating handle (20), the ejecting movement of the piston (13) being carried out by operating the handle (20) by hand and the sucking movement Return the piston (I3) by using the handle> (20) acting spring member (26) and a power transmission from the handle (20) on the piston (13) via the piston rod connected to it (11) accomplished v / grounding, and wherein the metering device has a blocking element which can be adjusted to a volume of liquid to be administered comprises, which limits the stroke of the piston to the path corresponding to the desired volume, characterized in that .that die_ metering device also connected to the piston rod Stop member (23, 123, 137) comprises and that the locking member inner Sn of the lateral yfcistolenwandung approximately at the height of the said piston rod (11) in the area between the rear end position of the • · 009817/1311 ■ ^: bad.original r.tt * »r · · ·· • «t« · ff Stop member and the rear end position of the piston is attached. - 9 · Dosing device according to claim 8, characterized in that that the blocking element, which can be adjusted to the desired stroke volume, is an impact element serving as an impact element or carrying an impact element, locking disc (25, 125) adjustable by turning, 10. Dosing device according to one of claims 8 and 9 »thereby characterized in that the metering device, in addition to the aforementioned locking disc (25 »125), has a position of the latter which can be attached to the outside of the gun housing, with the locking disk releasably connected and the same t entrains adjusting knob (34, 1; $) when rotated. 11. Dosing device according to one of claims 8 to 10, characterized in that the locking member consists of a circular locking disc (125), which along a chord on the circular surface facing the piston rod protrudes from the circular surface Locking strip (1 ^ 3) carries. ._. 12. Dosing device according to one of claims 8 to 11, characterized gekennzeiclinet that the stop member one on the piston rod firmly seated stop ring (137), which extends so far in Direction of the locking member extends, dars it to the same 009817/1391 BATH ORIGINAL -Vf- Movement of the piston rod in one of the two bending directions of the piston runs up. 13- Dosing device according to claim 11, characterized in that that the stop member comprises a stop ring (137) which is firmly seated on the piston rod and extends so far in the direction of the locking disk (125) extends so that it moves when the piston rod is moved in one of the two directions of movement of the piston at certain positions of the locking strip (l4j5) on the latter, but does not run onto the locking washer (125) carrying it. l4. Dosing device according to claim 13, characterized in that that the stop member further comprises a fork arm (123) located at the upper end of the handle and movable with the piston rod is connected, and that the stop (137) has a recess (139), so that when the locking bar is in position (1 ^ 3) the stop ring is in a position parallel to the piston rod axis (137) can move past the locking bar (1 ^ 3) and the Movement-errenzun ^ by hitting the fork barr. (123) on the Sperrleir: te Ί43) takes place. BATH ORIGINAL 0098 17/139 1 Blank page