US46034A - Improvement in metallic cartridges - Google Patents
Improvement in metallic cartridges Download PDFInfo
- Publication number
- US46034A US46034A US46034DA US46034A US 46034 A US46034 A US 46034A US 46034D A US46034D A US 46034DA US 46034 A US46034 A US 46034A
- Authority
- US
- United States
- Prior art keywords
- shell
- cartridges
- ball
- metallic
- improvement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011248 coating agent Substances 0.000 description 14
- 238000000576 coating method Methods 0.000 description 14
- 239000002184 metal Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000004519 grease Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920001220 nitrocellulos Polymers 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 2
- 239000000020 Nitrocellulose Substances 0.000 description 2
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2S,3R,4S,5R,6R)-2-[(2R,3R,4S,5R,6S)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2R,3R,4S,5R,6S)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 description 2
- USXDFAGDIOXNML-UHFFFAOYSA-N fulminate Chemical compound [O-][N+]#[C-] USXDFAGDIOXNML-UHFFFAOYSA-N 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000000717 retained Effects 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
- F42B5/26—Cartridge cases
Definitions
- Metallic cartridges are usually constructed with copper shells or cartridge-cases,which, when the cartridges are completed, are in contact with the lead balls. It is also customary to grease the balls in order to prevent the leading of the gun, and the grease be-, comes smeared over the copper shell as wellv as the ball. As lead and copper have dii'erent affinities for oxygen, a galvanic action takes place in the cartridge by reason of the contact of the two metals, and the result of this action is the deterioration of the powder with which the cartridge is charged; hence metallic cartridges, which in many respects are superior to all others, deteriorate by age, and cannot always be relied upon.
- the object oi' lmy invention is to obviate this defect of metallic cartridges 5 and it consists in coating the metal before the ball is applied to the shell with a non-conducting coating, which prevents the contact of the metal of the ball with that of the shell, and thereby prevents the galvanic action.
- the material which I prefer for this purpose is collodion, or gun-cotton dissolved in ether, in the form in which itis now found in chemists shops and the best mode with which I am acquainted of applying it is as follows
- the car tridge-shells are first charged with the fulminate in the usual manner, as represented by the red color in Fig. 3, and are permitted to dry.
- a small quantity of the liquid collodion is introduced into each shell, and the shell is turned upside down to pour out as much as will run from it.
- These operations leave the whole interior of the shell covered with the glutinous liquid, which, drying, forms a perfect coating.
- the butts 'of the balls are dipped in the liquid as far as the line a a, Fig.
- the cartridge produced ih this manner has its interior coated with a non-conducting coating which prevents the contact of the metal of the ball with that of the shell, so that galvanic action is prevented. It is not essential for this purpose that both ball and shell should be coated, but this mode of embodying the invention is the best, because the powder is thereby prevented from coming in'contact with any naked metal surface, and is in fact shut np in a casing of an inert material, (the coating,) which is retained in form and continuity by the metal. rIhe form 'of the cartridge mayof course be varied to suit the fire-arm with which it is to be used, and other nou-conducting coatings than collodion may be used if deemed best.
- a metallic cartridge coated on its interior with a nonconducting coating substantially as set forth.
Description
H. C. SPAULDING METALLIGGARTRIDGB.
Nix-46,034. Patented Jan. 24, 1865.
UNITED STATES PATENT (DEEIcE.l
HENRY C. SPALDING, OF BROOKLYN, NEW YORK.
IMPROVEMENT IN METALLIC CARTRIDGES.
Speciiicaton forming part of Letters Patent No. 46,034. dated January 24,1865.
To all whom it may concern:
Beit known that I, HENRY G. SPALDING,
: of Brooklyn, in the county of Kings and State of New York, haveinvented a new and useful Improvement in Metallic Cartridges;k
and that the following is a full, clear, and eX- act description of my invention, reference being had tothe. accompanying drawing, in which- Figure l represents a View of a metallic cartridge constructed according to my invention. Fig. 2 represents a view of the ball separate from the shell or cartridge-case, and Fig. 3 represents a section ofthe cartridgecase before its application to the ball.
Metallic cartridges are usually constructed with copper shells or cartridge-cases,which, when the cartridges are completed, are in contact with the lead balls. It is also customary to grease the balls in order to prevent the leading of the gun, and the grease be-, comes smeared over the copper shell as wellv as the ball. As lead and copper have dii'erent affinities for oxygen, a galvanic action takes place in the cartridge by reason of the contact of the two metals, and the result of this action is the deterioration of the powder with which the cartridge is charged; hence metallic cartridges, which in many respects are superior to all others, deteriorate by age, and cannot always be relied upon.
The object oi' lmy invention is to obviate this defect of metallic cartridges 5 and it consists in coating the metal before the ball is applied to the shell with a non-conducting coating, which prevents the contact of the metal of the ball with that of the shell, and thereby prevents the galvanic action.
The material which I prefer for this purpose is collodion, or gun-cotton dissolved in ether, in the form in which itis now found in chemists shops and the best mode with which I am acquainted of applying it is as follows The car tridge-shells are first charged with the fulminate in the usual manner, as represented by the red color in Fig. 3, and are permitted to dry. Then a small quantity of the liquid collodion is introduced into each shell, and the shell is turned upside down to pour out as much as will run from it. These operations leave the whole interior of the shell covered with the glutinous liquid, which, drying, forms a perfect coating. The butts 'of the balls are dipped in the liquid as far as the line a a, Fig. 2, and are permitted to dry, the balls during the drying being set in shallow sockets with their 'butts uppermost, by which meansthe portion of each ball which is to be applied to the shell becomes thoroughly coated. When the shell and ball are dry, the former is charged with powder, and the ball is applied inthe usual manner.
The cartridge produced ih this manner has its interior coated with a non-conducting coating which prevents the contact of the metal of the ball with that of the shell, so that galvanic action is prevented. It is not essential for this purpose that both ball and shell should be coated, but this mode of embodying the invention is the best, because the powder is thereby prevented from coming in'contact with any naked metal surface, and is in fact shut np in a casing of an inert material, (the coating,) which is retained in form and continuity by the metal. rIhe form 'of the cartridge mayof course be varied to suit the fire-arm with which it is to be used, and other nou-conducting coatings than collodion may be used if deemed best.
I do not claim the invention of a metallic cartridge, nor of collodion, nor, broadly, the application of a coating of collodion or other varnish to cartridges, as I am aware that the exteriors of paper and gun-.cotton cartridges have been coated with collodion; but
What I claim as my invention, and desire to secure'by Letters Patent, is-
A metallic cartridge coated on its interior with a nonconducting coating, substantially as set forth.
In witness whereof I have hereunto set my hand this this28th day of October, A. D. 1864.
HENRY C. SPALDING.
Witnesses:
JAs. S. FERGUSON, W. L. BENNEM.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US46034A true US46034A (en) | 1865-01-24 |
Family
ID=2115593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US46034D Expired - Lifetime US46034A (en) | Improvement in metallic cartridges |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US46034A (en) |
-
0
- US US46034D patent/US46034A/en not_active Expired - Lifetime
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