US3765298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the protective charging of case-less cartridges
Assignee: Foerenade Fabriksverken AB
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Filing: 1971-11-10
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Granted: 1973-10-16
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Expires: 1991-11-10
Abstract
Abstract A device for simplifying the handling of case-less cartridges, said device comprising a cassette composed of two halves made of frangible or fragile material and forming a compartment for each cartridge, said cassette when completely filled with new cartridges being pushed down into a magazine by means of an auxiliary guiding frame or cover that has resilient means for advancing the cassette. The compartment has walls which include wedge-like cartridge shoulder-supporting means that convey to said walls a lateral force, breaking up or dividing each cassette compartment as the cartridge emerges from the magazine. Each cartridge is pushed under the action of an advancing cartridge seating means such as a breech block during firing procedure.
Inventors
- 👤 E Wallberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:10
CPC Classifications
F; F42; F42B; F42B39/00; F42B39/08; F42B39/082; Y; Y10; Y10S; Y10S102/00; Y10S102/70
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
289 words
A cassette carrier for protectively carrying and positioning caseless cartridges for use in a weapon having a safe cartridge feeding mechanism and a breech block seating operator for said cartridges, said cassette having a plurality of separate compartments, one for each cartridge, and comprising two co-fitting members of frangible material, each member having a sequence of parallel closely-spaced semi-circular grooves, with the grooves of the two members facing and mating to define the separate compartments, and with each compartment serving to accommodate a cartridge having a front projectile connected to a propelling charge behind the projectile, with the charge provided with a shoulder plate of forwardly convergingly tapered conical shape at its front end, the forward end of each compartment wall at the upper forward edge in each groove being shaped to have a boss portion axially inclined forwardly and inwardly toward the axis of the compartment to serve as a stop to hold a cartridge against casual forward displacement, and said boss portion later serving as a wedge to generate a lateral force with a maximum half-diameter moment arm relative to the line of the thin wall section at the bottom of its groove, when the cartridge is pressed forward to operating position by the breech block operator, whereby the front tapered shoulder plate of the cartridge will forcibly press the two boss portions as wedges on the related compartment walls to generate said lateral force on each said wall to fracture the upper portion of each said wall section, and to cause said upper porTion of each said wall to be broken away at the top of the magazine to provide free space for the next following grooved walls of the succeeding compartment and its contained projectile.
Claim 2
Dependent Claim
289 words
A cassette carrier for protectively carrying and positioning caseless cartridges for use in a weapon having a safe cartridge feeding mechanism and a breech block seating operator for said cartridges, said cassette having a plurality of separate compartments, one for each cartridge, and comprising two co-fitting members of frangible material, each member having a sequence of parallel closely-spaced semi-circular grooves, with the grooves of the two members facing and mating to define the separate compartments, and with each compartment serving to accommodate a cartridge having a front projectile connected to a propelling charge behind the projectile, with the charge provided with a shoulder plate of forwardly convergingly tapered conical shape at its front end, the forward end of each compartment wall at the upper forward edge in each groove being shaped to have a boss portion axially inclined forwardly and inwardly toward the axis of the compartment to serve as a stop to hold a cartridge against casual forward displacement, and said boss portion later serving as a wedge to generate a lateral force with a maximum half-diameter moment arm relative to the line of the thin wall section at the bottom of its groove, when the cartridge is pressed forward to operating position by the breech block operator, whereby the front tapered shoulder plate of the cartridge will forcibly press the two boss portions as wedges on the related compartment walls to generate said lateral force on each said wall to fracture the upper portion of each said wall section, and to cause said upper porTion of each said wall to be broken away at the top of the magazine to provide free space for the next following grooved walls of the succeeding compartment and its contained projectile.
Claim 3
Dependent Claim
80 words
A cassette device according to claim 1, wherein each of the two halves of the cassette that face one another has connecting walls between the grooved walls of adjacent cartridge compartments, said connecting walls being provided with suitable sealing barrier means consisting of tongues on one half cassette and slits on the other half cassette, in which the tongues fit into the facing slits to prevent the spread of ignition fire from one cartridge compartment to another in the cassette.
Claim 4
Dependent Claim
76 words
A cassette device according to claim 1, wherein the two halves of the cassette are held together temporarily as a package by a holding and loading frame that has a U-shaped cross section, said frame being temporarily fitted over one edge of the filled cartridge package, and said loading frame serving for pushing the cassette fully down into the bottom of the gun magazine, after which said frame is removed from the cassette and the magazine.
Claim 5
Dependent Claim
158 words
A cassette for holding a plurality of case-less cartridges comprising, a pair of grooved halves fitted together in facial relation so that the grooves therein co-operate in forming cylindrical, sequential parallel open-end cartridge compartments whose arcuate walls are connected by short wall sections, each compartment to receive a cartridge having a front shoulder, and each compartment wall being provided at its front end with a projection boss against which said shoulder on a cartridge abuts, one of the halves being provided with slits in the connecting wall sections between its grooves, the other half having tongues in the connecting wall sections between its grooves for entry into the slits when the two halves of the cassette are facially placed together, and both of the halves having weakened linear wall regions at the bottoms of their grooves for the separation of parts of the halves pressed by a cartridge shoulder when a cartridge is moved out of a groove.
Claim 6
Dependent Claim
158 words
A cassette for holding a plurality of case-less cartridges comprising, a pair of grooved halves fitted together in facial relation so that the grooves therein co-operate in forming cylindrical, sequential parallel open-end cartridge compartments whose arcuate walls are connected by short wall sections, each compartment to receive a cartridge having a front shoulder, and each compartment wall being provided at its front end with a projection boss against which said shoulder on a cartridge abuts, one of the halves being provided with slits in the connecting wall sections between its grooves, the other half having tongues in the connecting wall sections between its grooves for entry into the slits when the two halves of the cassette are facially placed together, and both of the halves having weakened linear wall regions at the bottoms of their grooves for the separation of parts of the halves pressed by a cartridge shoulder when a cartridge is moved out of a groove.
Claim 7
Dependent Claim
52 words
A cassette device according to claim 4, including a protective cover for a cartridge-filled cassette, said cover comprising a channel-shaped member having parts fitting over the top and over a side of the filled cassette, with both halves fitted together, and the cover removable after insertion of the cassette to operation position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |