US2503517A

US2503517A - Ampoule neck cutter

Info

Publication number: US2503517A
Application number: US697111A
Authority: US
Inventors: John D Sirica
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-09-14
Filing date: 1946-09-14
Publication date: 1950-04-11
Anticipated expiration: 1967-04-11

Description

April 11, 1950 J. D. SIRICA 2,503,517

AMPOULE NECK CUTTER Filed Sept. 14, 1946 INVENTOR. JOHN D. SIR/CH H T T RNE Y Patented Apr. 11, 1950 UNITE D S TATES JPAT EN T F F I CE AMPOULE NECK CUTTER John D. Sirica, Waterbury, Gonn.

Application September 14, 1946, Serial No. 697,111

-6 Claims.

This invention vrelates :to glass tube cutters,

riesa v -shaped cutting edge which will scratch or score a single uniform circular line on said neck when said holding device is twisted.

One object of the present invention-is to pro vide an ampule cutter of the above nature which will fit ampule necks .of any common size, and which is compact in construction so that it may be readily carried in the pocket.

A further object'is toprovide an ampule cutter or the above nature which is provided with a cutting element of tungstencarbide, or other hard long-wearing material, and in which no guiding tube is necessary for steadyingthe neck of the ampule during the scratching operation.

A further object is to provide a device of the above nature which will avoid the use of saws or files for scratching the neck of the ampule which were apt to cause splinters when the tip was broken off from the ampule, which will be simple in construction, inexpensive to manufacture, easy to install and manipulate, ornamental in appearance, and very efficient and durable in use.

With these and other objects in view, there has been illustrated on the accompanying drawing i shaped ampule cutter with its jaws shown in 00 normal open position.

Fig. 2 is a top plan view of the same, showing in dotted lines the position of an ampule while the neck is being scratched, preparatory to breaking oil the tip of the ampule.

Fig. 3 is a front view, showing in full lines the jaws in open position, in dotted lines the closed position of said jaws, and in dot and dash lines the intermediate position of the cutter holder when twisted halfway around the ampule during the scratching operation.

Fig. 4 is a side view, partly in section of the ampule cutter holder shown in closed position, with the jaws engaging the neck of the ampule indicated in dotted lines.

Referring now to the drawing in which like reference characters denote corresponding parts throughout the several views, the numeral l0 indicates a U-shaped holder, preferably formed from a flat strip of resilient plastic material. The

:holder =10 comprises a short base 'slzl having a pair "of divergingsides l2, l3, and a pairof .inturned aligned end jaws l4, 1:5. The jaws I14, 15 have :Ihorizontal edges 1| 6, l l, which are provided, respectively, with 'V-shaped central sections l8, H). The edge it of the jawil'4is rounded'to insure a single line contact with the ampule neck, and thus to obtain asing'le circular cut.

In order to provide .a scratching element-for the ampule cutter, :provisionis made 'IOf'3.SI1bstantial'ly semi-circular plate'20 ofilong-wearing hard material, preferably of :sintered carbide, havingia round lower base 12],:and a 'V-shaped npperifrecess 22 provided with bevelied'edges '23 on one side thereof. The plate 20 is embedded in arecess 23a-formedin the center of the cutting :j-aw i=5'below the V-es'ection lfi'thereoi.

It will be understood that any other-cutting material maybe employed such as hard steel, carbaloy, tungsten carbide, double carbide of tungsten, tantalum, and boron carbide, and that any desired angle less than degrees may be employed for the recess 22,

The numeral 24 indicates the body of an ampule, and the numeral 25 the tapered tip thereof. The body 24 has a reduced concave annular neck 26 which is adapted to be engaged by the sharp bevelled scratching edge of the V-shaped cutting plate 20 when the holder I0 is twisted 360 degrees around said neck 26.

Operation In operation, when it is desired to scratch or score a circular line around the neck of an ampule 24 preparatory to breaking off the tip 25 thereof, it will merely be necessary to insert the ampule neck 26 between the jaws l4, l5, in the position shown in Figs. 2, 3, and 4 of the drawing. The holder ID will then be twisted one full turn around the neck 26, while the jaws I4, [5 are pressed inwardly tightly against said neck. The tip 25 may then be easily broken 01f from the body 24 of the ampule, smoothly, and without causing splinters or small particles of glass.

One advantage of the present invention is that by the elimination of glass splinters by the smooth scratching of the ampule neck, there will be no possibility of cutting the hands of the operator or contaminating the liquid contained in the ampule.

A further advantage is that a uniform line will be scratched on the neck of the ampule, which could not be done with the pointed cutters, files or saws previously used.

It will also be understood that in the use of the improved ampule cutter, the trailing side of the V-shaped cutting edge will ride in the groove cut by the leading side, and will deepen the cut made thereby, so that only a single line will be scratched in the neck of the ampule even though the cutting element might be mounted in an in clined position in the cutting jaw.

While there has been disclosed in this specification one form in which the invention may be embodied, it is to be understood that this form is shown for the purpose of illustration only, and that the invention is not to be limited to the specific disclosure, but may be modified and embodied in various other forms without departing from its spirit. In short, the invention includes all the modifications and embodiments coming within the scope of the following claims.

Having thus fully described the invention, what I is claimed as new, and for which it is desired to secure Letters Patent, is:

1. In a device for scratching a uniform single circular line around the circumference of the neck of an ampule preparatory to breaking oil the tip of said ampule, a substantially U-shaped holder of resilient plastic material adapted to be grasped by one hand, and having inturned spaced jaws at the open end thereof, the ends of said jaws having neck-engaging recesses, one of said recesses carrying a V-shaped sharp edged cutting element to scratch said neck when the holder is being rotated, the other of said recesses having a rounded edge.

2. The invention as defined in claim 1, in which said V-shaped cutting element consists of sintered carbide.

3. The invention defined in claim 1, in which said holder has sides which are initially diverging toward said jaws.

4. The invention defined in claim 1, in which 4 said cutting element has a rounded lower base embedded in the cutting jaws of said holder.

5. In a device for scoring a uniform circular line around the circumference of the neck of an ampule preparatory to breaking ofi the tip thereof, a substantially U-shaped holder having inturned spaced jaws at the open end thereof, one of said jaws having a V-shaped sharp edged cutting element to score said neck when the holder is rotated, the other jaw having a rounded horizontal edge to produce a line contact with said neck and thus hold the ampule in alignment during the scoring operation.

6. In a device for scoring a uniform circular line around the circumference of the neck of an ampule preparatory to breaking 011 the tip thereof, a substantially U-shaped holder having inturned spaced jaws at the open end thereof, one of said jaws having a V-shaped sharp edged cutting element to score said neck when the holder is rotated, the other jaw having a rounded horizontal edge and also having a V-shaped central recess to produce a line contact with said neck and thus hold the ampule in alignment during the scoring operation.

JOHN D. SIRICA.

Cemented Carbides Used For Other Purposes Than Cutting Tools, in Machinery, August 1946, pages 150-156.

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