US3693497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shell reloading apparatus
Assignee: C H TOOL AND DIE CORP
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Filing: 1971-03-04
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Granted: 1972-09-26
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Expires: 1991-03-04
Abstract
Abstract A shell reloading apparatus having an improved expander button which is positioned to expand the bullet-gripping shell neck. A used shell is first inserted into a cavity of the apparatus to reduce the diameter of the shell neck. The shell is then withdrawn from the cavity and over the expander button. A hard metal carbide ring on the expander button engages the inside of the shell neck as the shell is withdrawn from the cavity to thereby expand the shell neck to an accurately controlled diameter. Lubrication of the neck is not required and the ring can last indefinitely since it is highly immune to wear.
Inventors
- 👤 Harvey A Jacobitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:28
CPC Classifications
B; B21; B21D; B21D1/00; B21D1/06; B21D1/08; F; F42; F42B; F42B33/00; F42B33/04; F42B33/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
132 words
In a cartridge shell resizing apparatus of the type comprising means for reducing the inside diameter of a bulletengaging neck portion of the shell to a dimension less than the original dimension thereof before firing and means for expanding the reduced inner diameter of said neck portion to an accurately predetermined size, said expanding means being located within the body of the shell when the neck is reduced to said lesser dimension, that improvement which comprises a round fitting on said expander means formed of a hard metal carbide, said round fitting having an accurately sized outer diameter and being positioned to engage the reduced inner diameter of the neck portion of said shell portion for expanding said portion to said accurately predetermined size when the shell and expander are axially separated.
Claim 2
Dependent Claim
132 words
In a cartridge shell resizing apparatus of the type comprising means for reducing the inside diameter of a bulletengaging neck portion of the shell to a dimension less than the original dimension thereof before firing and means for expanding the reduced inner diameter of said neck portion to an accurately predetermined size, said expanding means being located within the body of the shell when the neck is reduced to said lesser dimension, that improvement which comprises a round fitting on said expander means formed of a hard metal carbide, said round fitting having an accurately sized outer diameter and being positioned to engage the reduced inner diameter of the neck portion of said shell portion for expanding said portion to said accurately predetermined size when the shell and expander are axially separated.
Claim 3
Dependent Claim
36 words
The apparatus called for in claim 1 wherein said carbide fitting is shaped to form a circular surface over which said reduced neck portion is drawn for expanding said neck portion to said accurately predetermined size.
Claim 4
Dependent Claim
29 words
The apparatus called for in claim 1 wherein said carbide fitting comprises a ring over which said reduced portion is drawn for expanding said portion to said original dimension.
Claim 5
Dependent Claim
107 words
In a cartridge shell resizing apparatus of the type comprising a die having a cavity into which an expanded shell of a previously fired cartridge is insertable, said cavity being dimensioned to reduce the inside diameter of a portion of the shell to a dimension less than the original dimension thereof before firing when the shell is inserted into the cavity and means for expanding the reduced diameter of said shell portion, that improvement which comprises a member on said expander means formed of a hard metal carbide and positioned to engage the reduced diameter of said shell portion for expanding said portion to said original dimension.
Claim 6
Dependent Claim
107 words
In a cartridge shell resizing apparatus of the type comprising a die having a cavity into which an expanded shell of a previously fired cartridge is insertable, said cavity being dimensioned to reduce the inside diameter of a portion of the shell to a dimension less than the original dimension thereof before firing when the shell is inserted into the cavity and means for expanding the reduced diameter of said shell portion, that improvement which comprises a member on said expander means formed of a hard metal carbide and positioned to engage the reduced diameter of said shell portion for expanding said portion to said original dimension.
Claim 7
Dependent Claim
37 words
The apparatus called for in claim 4 wherein said carbide member defines a surface which is concentric with the die cavity and over which said reduced portion is drawn to expand said portion to said original dimension.
Claim 8
Dependent Claim
12 words
The apparatus called for in claim 5 wherein said surface is circular.
Claim 9
Dependent Claim
31 words
The apparatus called for in claim 5 wherein said surface is spaced axially of said cavity from the portion of the cavity which reduces the inside diameter of said shell portion.
Claim 10
Dependent Claim
15 words
The apparatus called for in claim 7 wherein said surface is positioned within said cavity.
Claim 11
Dependent Claim
18 words
The apparatus called for in claim 4 wherein said carbide member comprises a ring concentric with said cavity.
Claim 12
Dependent Claim
27 words
The apparatus called for in claim 9 wherein said ring is spaced axially of the cavity from the portion of the cavity which reduces said shelL portion.
Claim 13
Dependent Claim
26 words
The apparatus called for in claim 9 wherein said expander member includes a diametrically reduced portion terminating in a shoulder on which said ring is seated.
Claim 14
Dependent Claim
28 words
The apparatus called for in claim 11 wherein the inner diameter of said ring corresponds closely to the outer diameter of said reduced portion of the expander member.
Claim 15
Dependent Claim
45 words
The apparatus called for in claim 12 wherein there is provided a small area clearance between the inner cylindrical surface of the ring and the outer cylindrical surface of said reduced portion to receive bonding material for securing the expander ring to the expander assembly.
References Cited (Backward Citations)
US3283643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |