US2224967A - Dental appliance - Google Patents

Description

Dec. 17, 1940. N. G. KAYE 2,224,967

DENTAL APPLIANCE Filed March 1o,` 193e ATTORNEYS Patented Dec. 17, 1940 uiten j stares parmi' trice 2 Claims.

This invention relates to a dental appliance and refers more particularly toa device for measuring, mixing, ejecting oi impression material.

An object oi the present invention is the provision of an instrument `which can be used for mixing and ejecting a material used in dentistry for male-ing impressions, `said instrument being inexpensive in construction and simple and reliable in operation'.

Other objects o f this invention will be apparent in the course of the following specification.

The invention will appear more clearly from the following detailed description when taken in connection with the accompanying drawing showing by way of example a preferred embodiment oi the inventive idea.

In the drawing:

Figure 1 is a section through the syringe, some parts being shown in a side elevation.

Figure 2 shows a portion of the syringe when it is ready for mixing.

- Figure 3 shows a nozzle in section; f

Figure 4 shows a nozzle ci a `somewhat different type; and f Figure 5 is a section along `the line Iiii5 of Figure 4.

The syringe 2li shown in Figures 1 and 2 of the drawing comprises an outer casing Si! having two broad slots through which the inner glass cylinder 8| is exposed. As shown in Figure l., the glass container or cylinder 2| is provided with the indicia 812 showing the amount of the material contained in the cylinder, and serving for proportioning the material. y

The casing 8B is screwed upon a threaded portion of an upper lange $3, the inner surface oi which carries a washer @di used for supporting one end o1 the glass cylinder di. A lower flange 85 is Aprovided with an outer threaded portion which measures with screw threads provided upon the inner lower surface of the cylinder di). flange 35 is also provided with an inner threaded portion which is used for holding a correspondingly shaped lower portion it@ oi the glass cylinder 8l.

The cover 8'? is connected by a hinge 38 and a lock il@ with the upper flange 83. The cover 8l is provided with a narrow horizontal bore hole within which a spring 93 is situated, which may be compressed by a set screw 9E. A bali 92 is in engagement with the spring 9i) and fits within a recess formed a plunger which is connected by the bolts @d with a hard rubber head g5.

In the position shown of Figure 1 a stirrer S6, having the form of a narrow blade, is situated The within a correspondingly shaped recess Eil, which is provided in lthe rubber head 95. The stirrer 96 is carried by a ro-d 98 which passes through another opening formedin the rubber head 95 and the plungerES. .The upper end of the rod 98 carries the head 39, a threaded portion Ill and a square end portion II. The upper portion of the plunger 93 is provided with inner screw threads The lower Vend of the container 8| is provided with an opening |93 which is in alignment with a corresponding opening or passage iM provided in the bottom closure member HB5, which is connested by the hinge Iili and the lock Nil with the flange 85. The bottom member |85 carries a pet cock Iill having an opening lll@ and used .for interrupting and controlling the passage of the mixture through the channel or passage |64. The lower end of the closure member H35 is provided with screw threads H0.-

As already mentioned, the syringe 24 may be used for the purpose of ejecting lthe casting material and may also be used as a mixer for that material... Figure ls'hows the syringe when it is ready for ejection, while Figure 2 shows it while it is being used` as amixer.

When the syringe is used for ejection, the plunger handle |I| is placed over the upper end of the rod 93, the threaded lower portion ||2 of the handle |I| being screwed upon the threaded portion |2 of the plunger 93. The upper threaded portion I3 is threaded upon the screw threads Idil carried'by the rod 98.

Nozzles of different forms may be affixed one after the other Ito the syringe 2li to suit individual requirements.

Figure 1 shows a short nozzle H4 which is connected with a syringe by a closure member ||5 screwed upon the screw threads I IG of the bottom portion |95 and supported by the rubber Washer Figure 3 shows a nozzle II'I having two V- shaped end portions IIB and IIS.

Figures 4 and 5 show a nozzle |29 provided with avery narrow elongated passage I2 I.

Figure 2 shows the device when it is ready to be used as a mixer. In that case, the handle II I is removed and a cover |22 is placed over the upper end of the rod 98 in such manner that the rectangular end lill nts into a square recess |23 formed in the cover |22. The cover |22 is provided with a handle |24 which is iirrnly attached thereto.

As shown in Figure 1, the syringe 24 may be conveniently supported upon a stand |25 which has an annular portion |26 supporting the bottom member |05 and enclosing the closure member H5. Legs |21 are firmly connected with the annular support |26 by the bolts |28.

The impression material may be introduced into the interior of the glass container 8|, either by suction or upon opening the cover 81.

Then the mixing of the material situated within the container 8| takes place. For that purpose the syringe 24 is placed upon the support |25 and the plunger handle is unscrewed and removed from the syringe. Then the cover |22 is placed over the upper portion of the rod 98 in such manner that its inner square recess |23 ts over the square end |0| of the rod 98. The casing |22 is moved downwardly until it rests upon the shoulder |29 of the cover 81. The rod 98 is thereby also moved downwardly until its end portion 99 ts into a recess |30 provided in the plunger 93. Then the operator may rotate the handle I 24, and the cover member |22 and the rod 98 will be rotated along with it. 'Ihe blade 96 which is now situated substantially in the middle of the glass container 8|, will rotate along with its rod 98 and will thoroughly mix the material situated within the glass container 8|.

When the impression material has been suiciently mixed the cover |22 is removed, the mixing blade 96 is returned to its position in the recess 91 and then the handle is screwed again upon the plunger 93 and the threaded portion |09 of the rod 98.

All the parts of the described device may be conveniently cleaned sterilized and are easily replaceable.

It is apparent that the specic illustrations shown have been given by way of illustration and not by way of limitation, and that the structures above described are subject to wide variations and modications without departing from the scope of the invention. For example, this device may be used not only in connection with dental treatments, but also in sculpture, or in any other art in which castings or impressions are required. All of such variations and modifications are to be included Within the scope of the present invention.

What is claimed is:

1. A device for mixing and ejecting a material, said device comprising a container, an opening formed in said container, a lower 'flange enclosing a portion of said container, a bottom member connected with said lower flange and having a passage formed therein which is in alinement with said opening, a valve carried by said bottom member for opening and closing said passage, said bottom member having a threaded portion, a nozzle having a passage formed therein and communicating with the first-mentioned passage, a nozzle support carrying said nozzle and engaging said threaded portion, an upper ilange enclosing another portion of said container, a cover connected with said upper ilange, a plunger head movable within said container, a plunger connected with said plunger head and extending through an opening formed in said cover, releasable means carried by said cover for maintaining said plunger in a predetermined position, said plunger having a threaded portion, and a handle screwed upon the threaded portion of said plunger.

2. A device for mixing and ejecting a material, said device comprising a container, an upper ange enclosing a portion of said container, a cover connected with said upper flange, a plunger head movable within said container, a plunger connected with said plunger head and extending through an opening formed in said cover, releasable means carried by said cover for maintaining said plunger in a predetermined position, a mixing blade movable within said container and fitting into a recess formed in said plunger head, a movable rod having one end connected to said mixing blade and extending through openings formed in said plunger head and said plunger, an angular end portion carried by the other end of said rod, and a handle detachably and movably mounted upon said cover and having an angular inner recess, said angular end portion fitting into said recess.

NATHAN G. KAYE.

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