US1347622A - Vaccine-injector - Google Patents

Description

. DEININGER.

VACCINE INJECTOR. APPLICATION FILED MAR29. 191.9.

Patented July 27, 1920.

3 SHEETS-SHEET I.

A. E. DEININGER.

VACCINE INJECTOR. APPLICATION FILED MARZQ. 1919.

1,347,622. Patented July 27, 1920.

3 SHEETS-SHEET 2.

A. E. DEININGER. VACCINE INJECTOR. APPLICATION FILED MAR-29, 1919.

Patented J uly 27, 1920.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

ARTHUR E. DEININGER, OF ST. PAUL, NEBRASKA.

VACCINE-INJECTOR.

Specification of Letters Patent.

Application filed March 29, 1919. Serial No. 286,029.

and State of Nebraska, have invented certain new and useful Improvements in Vaccine-Injectors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to vaccine injectors and the primary object of the invention is to provide an automatic vaccine injector, whereby several head of stock may be treated with the desired vaccine tablets without necessitating the reloading of the instrument after each injection. I

Another object of the invention is to provide an improved vaccine injector embodying a magazine, in which a plurality of vaccine tablets may be placed, thereby avoiding the usual inconveniences associated with the reloading of the instrument in the open.

A further object of the invention is to provide an improved vaccine injector having means for conveying the vaccine tablets from the magazine to a hypodermic needle, one at a time.

A further object of the invention is to provide an improved means for operating the vaccine tablet conveying means from the magazine, which is operated by the means for forcing the tablets from the needle.

A still further object of the invention is to provide an'improved means for forcing A further object of the invention is to provide an improved means for automatically locking the instrument, so that the same cannotbe operated, when the tablets in the magazine run out, thereby immediatei making it necessary to reload the instrument.

Another object of the invention is to pro vide an improved vaccine injector, which is shaped and operated similar to a pistol, whereby the operator can grasp the skin of the animal to be treated with one hand the vaccine tablets from the needle, after tie same have been delivered thereto from the magazine, into the desired place in the and inject the vaccine tablets with the other hand, without moving his hold on the skin or on'the instrument, and thus making certain of getting the vaccine in the right place each time.

A further object of the invention is to provide means in the handle of the injector for receiving several bottles of the vaccine tablets, whereby the same may be readily carried around and prevented from being displaced from the instrument.

A still further object of the invention is to provide an improved vaccine injector of the above character, which is durable and efficient in use, one that is simple and easy to manufacture, and one that can be placed. upon tae market at a reasonable cost.

With these and other objects in view, the

invention consists in the novel construction, arrangement and formation of parts, as

will be hereinafter more specifically described, claimed and illustrated in the accompanying drawings, forming a part thereof, in which:

Figure 1 is a side elevation of the improved vaccine injector.

Fig. 2 is a similar view, showing the cover plate removed.

Fig. 3 is a longitudinal horizontal section through the instrument.

Fig. 4 is a longitudinal vertical section taken on the line 4.4 of Fig. 3.

Fig. 5 is a transverse section taken on the line 5-5 of Fig. 3.

Fig. 6 is a detail sectional view of the plunger rod showing the ratchet tooth carried thereby.

Fig. 7 is an elevation of the reverse side of the lever for operating the vaccine tablet conveyer.

Fig. 8 is a transverse section taken on the line 88 of Fig. 3.

Fig. 9 is a similar view showing the vaccine conveyer placed in its lowered position.

Fig. 10 is a diagrammatic view of the vaccine tablet conveying means, showing the lever and tablet conveyer plate in position during the forward movement of the vaccine plunger injector.

Fig. 11 is a similar view showing the lever and the vaccine tablet conveyer plate Patented July 27, 1920.

in raised position for receiving another vaccine tablet during the rearward movement of the plunger ejector.

Fig. 12 is a slmilar view showing the lever plate being returned to its normal position when the plunger reaches its extreme rear position.

Figs. 13, 141, 15, and 16 are fragmentary 'mechanism and is held in place by removable fastoning elements 5 which are adapted to be threaded into lugs 6 carried by the section 3. The section 3 carries a circular rear wall 7 and the forward frusto-conical front portion 8, to which the hollow hypodermic needle 9 is adapted to be secured in the ordinary manner, as shown at 10.

A hollow handle 11 is formed on andextends downwardly from the section 3 and is provided with a plurality of inwardly extending openings 12 which are adapted to receive bottles 13 containing suitable vaccine tablets.

It is to be understood that the instrument can be used for injecting any kind of vaccine tablets, into animals so that the animal can be inoculated against any desired disease.

A magazine 14 including a tube 15 extends longitudinally of the casing 2 and has the terminals thereof secured respectively to the rear wall 7 and to the vaccine conveyer 16, which will hereinafter be more fully described. The tube 15 is adapted to receive a plurality of vaccine tablets 17 which are adapted to be fed forward in the tube by a follower 18, which has a reduced portion 19 formed on the rear end thereof around which is coiled the expansion spring 20 which normally urges the follower forward. The coil spring 20 has one end secured to the follower and the opposite end to the cap 21, which is threaded on the enlarged end 22 of the tube 15, which protrudes out of the rear wall 7. It can be seen by unthreading the cap 21 and removing the follower and spring from the tube, that the device can be readily reloaded.

The vaccine tablet conveyer 16 is secured to the forward end of the section 3 of the casing 2 and includes a pair of spaced plates 23 and 24, which are held in spaced position by means-of vertical spaced ribs 25 and 26 which form a guide for slidably receiving the vaccine conveyer tablet dermic needle 9. The upper aperture 29 communicates with the forward end of the tube 15 and a tablet is adapted to be forced into the opening by the follower l8 and into the opening 28 in the conveyer plate 27, when the same is in its raised position. When the plate 27 is in its lowered position, the opening is adapted to register with the lower opening 30 and positions the tablet in alinement with the needle 9, whereby the same can be readily forced therefrom by the plunger 33, which will hereinafter be more fully described. The lower opening 30 isprovided with a collar 34 which forms a guide for the plunger 33, in the movements thereof. The vaccine conveyer plate 27 is held in its raised and lowered positions in registration with either of the openings 29 or 30 against accidental displacement by means of a leaf spring 36, which is held in place by means of spaced lugs or screws 37 around which the spring is coiled. The free outer terminal of the spring is bent to form a rounded head 38 which is adapted to engage in either of the spaced notches 39 and 10 in the plate 27. The head 38 of the formed in the rib 25. It can be seen that the head engaging in either one of the notches 39 will hold the plate against accidental movement, but will allow the same tomove under positive actuation.

The rib 26 is provided with a central cutout portion 42, through which protrudes a T-shaped head 43, which is carried by the central portion of the outer side of the plate 27 and is adapted to pivotally receive the forward end of the lever 44, which controls the sliding movement of the plate. This lever will be hereinafter more fully described.

The plunger 33 is slidably mounted in the cylindrical casing 2 and is arranged in the central longitudinal axis thereof and has the forward end thereof reduced in thickness, so that the same may readily slide through the needle 9 and protrude out of the free end thereof, as is clearly shown in .Fig. 3 to force a vaccine tablet from the conveyer 16 and needle 9. An enlarged head 4.7 is formed on the plunger rod 33 ad jacent to the reduced portion thereof and the upper and lower surfaces of the head are provided with fiat faces so asto slidably spring protrudes through an aperture 41 engage the lower surface of the tube 15 of the magazine 14 and the upper surface of the plate 47 which forms a guide for the same. The plate 47 is held in position by means of screws or other fastening elements 48, which extend through lugs 49 formed on the plate and into the section 3 of the casing. The rear end of the plunger 33 is slidably received in a guide eye 50 which holds the same against displacement. An expansion spring 51 is coiled around the plunger rod 33 and is confined between the enlarged head 47 thereof and the guide eye 50. The extreme rear end of theplunger rod 33 is bent downwardly as at 52 to provide a hand grip, whereby the plunger rod may be readily grasped, so as to draw the same rearwardly against the tension of the coil spring 51. When the plunger rod is drawn rearwardly to its full extent, the reduced portion 33 thereof is drawn out of the needle 9 and the conveyer 16 and rests in the guide collar 34, so that another vaccine tablet may be delivered through the openings 30 and 31. The plunger rod is held in this position by means of catch 53, which is pivotally mounted intermediate its ends upon a pin 54- which is threaded into the casing. The rear end of the catch is curved upwardly and is provided wit-h a pointed end 55, which is adapted to seat in a notch 56 in the lower surface of the plunger rod and thus hold the same in its cocked position. The forward end of the lever 53 is pivotally connected to a trigger 57 by means of a pivot pin 58, which is pivotally connected to the casing by means of the pivot pin 59. The lever 53 is normally held in engagement with the plunger rod by means of the leaf spring 60 which is secured to the casing as at 61 and engages the lower surface of the lever. The forward portion of the trigger 57 is also held in raised position by means of the leaf spring 62 which is secured to the casing by means of a screw 63. Thus it will be seen that as soon as the trigger '7 is pressed rearwardly the pointed end of the lever 53 will be drawn downwardly against the tension of the spring and out of the notch 56 and allow the plunger rod to be forced forwardly by the tension of the coil spring 51.

The operating lever 44 for the vaccine conveyer is provided with an upstanding lug 65 formed on the upper edge thereof, which receives the pivot pin 66, which holds the lever pivotally connected to the casing and allows the same to rock in the casing. The forward end of the lever is provided with a slot 67, which receives the T-head 43 and when the lever is rocked on its axis, the plate will be raised or lowered. The inner side of the lever 44 is provided with a guide channel 68 in which is adapted to slide the dog 69 which is slidably mounted in the inwardly extending recess 70 formed in the enlarged head 47 of the plunger rod 33. The inner end of the ratchet 69 is en larged to form the shoulder 71, which is adapted to be engaged by the head 72 of screw 73, which is fitted into the head 47. The ratchet 69 is provided with a bore 74 which extends inwardly from the rear end thereof, which receives the expansion coil spring 75, which bears against the rear wall of the recess 70 and normally holds the ratchet in its extended position in the channel 68. The lever 44 is provided with oppositely extending enlargements 76 located on each side of the upstanding lug 65 and forms a continuous channel for the ratchet 69. A guide plate 78 is positioned in the channel in the enlargements 76 thereof and lies flush with the upper wall of the same. The rear edge .of the plate is provided with the inclined surface 79, so that the ratchet 69 when sliding forwardly in the channel will slide over the same. The lower and forward edge of the plate 7 8 is inclined downwardly as at 80 to conform to the configuration of the enlargement 76 and forms abrupt shoulders for engaging the ratchet 69 so as to rock the lever 44 on its axis upon rearward movement of the ratchet .69.

In operation of the improved device, the magazine 141's loaded with a suitable number of the tablets as described above, and the plunger 33 is drawn rearwardly which forces the ratchet 69 into engagement with the shoulder 80 formed on the plate 78 and thus rocks the lever 44 on its axis and forces the forward end of the same upwardly, which guides the openings 28 in the vaccine tablet carrying plate 27 in registration with the upper opening 29 in the rear wall 24 of the conveyer and the opening then receives a tablet from the magazine. Upon further rearward movement of the plunger the ratchet 69, when it slides past the pivot point 66 of the lever will rock the lever on its axis and swing the same into its normal horizontal position and thus lower the forward portion of the lever and bring the plate 27 downwardly and the opening 28 thereof into registration with the openings 30 and 31 in the rear walls of the conveyer and in alinement with the needle 9. When the plunger has reached its full rearward position, the pointed end 55 of the latch 53 engages in the notch 56 and holds the device in cocked position. The device is then ready for instant use. This construction of the instrument allows the animals skin to be grasped by one hand and the instrument in the other and permits the needle to be inserted therein and the plunger released by means of the trigger with the opposite hand,

thus insuring that the vaccine tablet is injected in the correct place. lVhen the plunger rides forwardly, the latch 69 as described rides over the entire surface 79 of the plate 78 and when it is desired to use the instrument again, the operation is repeated by pulling out the plunger 33.

From the foregoing description it can be seen that an improved automatic vaccine injector is provided, which allows a number of vaccine tablets to be carried therein and thus eliminates the necessity of carrying the tablets around in another receptacle while inoculating a herd of animals.

In practice, 1 have found that the form of my invention illustrated in the accompanying drawings and referred to in the above description, as the preferred embodiment, is the most efiicient and practical; yet realizing the conditions concurrent with the adoption of my device will necessarily vary, I

desire to emphasize that various minor changes in details of construction, proportion and arrangement of parts may be resorted to, when required without sacrific ing any of the advantages of my invention as set forth.

That I claim as new is:

l. A hypodermic syringe comprising a cylindrical casing, a needle removabl'y associated with the forward end of the casing, a magazine arranged in the casing above said needle, a sliding plate arranged in the easing intermediate the needle and magazine, said plate having an opening therein arranged to alternatelv register with the magazine and needle, spring means normally urging the contents of the magazine toward said plate, a lever rockably mounted in said casing, means for operatively connecting the forward end of the lever with the sliding plate, a plunger slidably mounted in the casing and in alinement with the needle, means operatively connecting with said plunger to rock said lever on its axis, and meansfor operating said plunger.

2. A device of the class described comprising a casing, a needle removably associated with the forward end of the casing, a magazine arranged in the casing and. positioned above the needle, means for placing pellets in the magazine, a sliding plate arranged intermediate the needle and magazine, said plate having an opening formed therein arran ed to alternately register with the magazine and needle, spring means in said magazine normally urging the contents thereof toward the bore of said plate, a lever pivoted intermediate the ends thereof in said casing, means operatively connecting the plate with the forward end of said lever, a sliding plunger arranged in the casing in alinement with-the needle, a lug carried by said plunger, said lever having a channel formed therein arranged toreceive the lug, whereby the lever will be rocked on its axis, during the sliding movement of said plunger, spring means normally urging the plunger forward, a catch arranged to engage said plunger to hold the same in cocked position against the tension of said spring, and means to release the catch from out .of engagement with said plunger.

3. A hypodermic syringe comprising a casing, a needle associated with the casing, a sliding plate arranged intermediate the needle and magazine, said plate having an opening formed therein and arranged to alternately register with the magazine and needle, a plunger slidably mounted in the casing, said plunger having the forward portion thereof reduced and slidably fitting in said needle, spring means normally urging the plunger forward, a pivoted catch arranged in the casing, said plunger having a notch formed in the lower edge thereof arranged to receive said catch when the plunger is in its cocked position, a trigger operatively connected with the catch for releasing the same from engagement with the notch, a lever pivotally connected intermediate its ends to the casing, means pivotally connecting the forward end of the lever with the sliding plate, a spring pressed dog carriedvby the plunger, said lever having a continuous channel formed therein arranged to receive said dog, a plate arranged in the channel adjacent to the forward edge thereof, said plate having the rear end thereof gradually tapered, the forward edge thereof being provided with an inclined abrupt shoulder, as and for the purpose specified.

4. hypodermic syringe comprising a magazine, a needle positioned below the magazine, a sliding plate arranged intermediate the magazine and needle, said plate having an opening formed therein arranged to alternately register with the magazine and needle, means for sliding the plate in the casing, spring means engaging said plate to hold the same in its raised and lowered positions against displacement, a slidable plunger, and means for actuating the plunger.

5. A hypodermic syringe comprising a cylindrical casing, a needle secured to the forward end of the casing, a handle formed on the casing and extending downwardly therefrom, means for delivering a charge to the needle and a sliding plunger arranged in the casing having anotch formed in its lower surface intermediate its end, spring 6. A hypodermic syringe comprising a magazine, a needle arranged below the magazine, a sliding plate arranged intermediate the magazine and needle, said plate 5 having an opening therein arranged to alternately aline with the magazine and needle, a lever rockably mounted below the magazine and operatively connected with the plate, means for forcing the charge from 10 the plate into and out of the needle, and

means carried by said last mentioned means for engaging and rocking said lever, as and for the purpose specified.

In testimony whereof I aflix my signature in presence of two Witnesses.

ARTHUR E. DEININGER.

WVitnesses G. H. DEININGER, WILLIAM F. SPIKns.

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