US214382A - Improvement in primers for cartridges - Google Patents
Improvement in primers for cartridges Download PDFInfo
- Publication number
- US214382A US214382A US214382DA US214382A US 214382 A US214382 A US 214382A US 214382D A US214382D A US 214382DA US 214382 A US214382 A US 214382A
- Authority
- US
- United States
- Prior art keywords
- cartridges
- anvil
- primer
- primers
- projections
- 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
- USXDFAGDIOXNML-UHFFFAOYSA-N fulminate Chemical compound [O-][N+]#[C-] USXDFAGDIOXNML-UHFFFAOYSA-N 0.000 description 16
- 239000002184 metal Substances 0.000 description 12
- 238000010276 construction Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/10—Percussion caps
Definitions
- My invention consists in constructing a primer for cartridges with its anvil all of one piece of metal, as hereinafter more fully described.
- Figures 1, 2, 3, and 4 represent the article in its various stages of formation.
- the remaining figures, from 5 to-12, inclusive, represent the same, slightly modified in construction, all being enlarged several diameters.
- Primers for cartridges are usually made like an ordinary percussioncap, except that they are usually larger in diameter and less in height. These primers require an anvil to explode them upon, the anvil sometimesbeing made in the head of the cartridge-shell, and in other cases separately from the shell 5 but in all cases, so far as I am aware, the anvil is composed of one or more pieces of metal separate and apart from the primer or cap.
- the object of my present invention is to construct the cap and its anvil all from one and the same piece of metal.
- This I accomplish by first punching out the disk or blank that is to form the primer with a series of radial projections, e, as represented in Fig. 1, which shows both a plan and an edge view of the blank.
- This blank is then cupped or drawn up by means of a drawing machine, using a die and punch, in the usual manner, when it assumes the form shown in Fig. 2.
- the fulminate a is then placed in it, and'covered with a disk, b, of tin-foil, in the usual manner, as shown in section in Fig. 3.
- the inclined points or projections 0 will be held so as to afford the necessaryresistance to insure the explosion of the fulminate when the primer is struck by the point of the firing-pin or hammer.
- the projections e be made of such a length as to cause their inner ends, when turned inward, to touch or bear against each other, they will thus form a pyramidal arch, and, although made of thin metal, will ofi'er ample resistance to the blow of the firingpin or hammer.
- Figs. 5, 6, 7, and 8,1 have shown the primer with its anvil composed of two projections, they being arranged directly opposite each other.
- Figs. 9,10,11, and-12 I have shown it made with a single projection, e, which is made at least twice as long as when two or more are used.
- the projection or arm 0 is bent at the center so as to form an apex, which bears against the fulminate at the center, with its loose end bearing against the opposite side of the cap, as represented in Fig. 12, and by which means it is so braced andheld as to cause it to operate well as an anvil in resisting the blow required for explosion of the fulminate.
- the projections e may be more or less varied, at will, and that in fact they may be formed of a series of points like saw-teeth, extending all around the edge of the disk or blank, it only being necessary to make them of such a length that when turned inward they shall form a bearing at or near the center of the fulminate, the principle of construction being the same Whatever the number or form of the projectionsused.
- a primer thus made has its anvil always with it, and secured in such a manner that there is no danger of its becoming detached or lost. They are, moreover, simple and cheap to construct or manufacture.
- a primer the cap of which is formed from a piece of metal having one or more points or radial projections, 0, arranged to be turned inward, so as to form an anvil, substantially as shown and described.
- An anvil for a primer formed of one or more points, 0, of metal, attached to the edge of the cap, or the blank from which the cap is formed, and integral therewith, the said point or points being turned inward against the fulminate, substantially as and for the purpose herein set forth.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Closures For Containers (AREA)
- Mounting Of Bearings Or Others (AREA)
Description
J. GARDNER. Primer for Cartridges. No.z2l4.3 82.
P'atented April 15 1879'.
NJPETERS, PHOTO-LITHOGRAPHER, WASHINGTON, D. Q
UNITED STATES PATENT OEEIcE.
JOHN GARDNER, OF NEW HAVEN, CONNECTICUT, ASSIGNOR OF ONE-HALF HIS RIGHT TO THE WINCHESTER REPEATING ARMS COMPANY, OF SAME PLACE.
IMPROVEMENT IN PRIMERS FOR CARTRIDGES.
Specification forming part of Letters Patent No. 214.382, dated April 15, 1879 application filed March 19, 1879.
To all whom it may concern:
Be it known that I, J OHN GARDNER, of New Haven, in the county of New Haven and State of Connecticut, have invented certain Improvements in Primers for Cartridges, of which the following is a specification.
My invention consists in constructing a primer for cartridges with its anvil all of one piece of metal, as hereinafter more fully described.
Figures 1, 2, 3, and 4 represent the article in its various stages of formation. The remaining figures, from 5 to-12, inclusive, represent the same, slightly modified in construction, all being enlarged several diameters.
Primers for cartridges, as is well known, are usually made like an ordinary percussioncap, except that they are usually larger in diameter and less in height. These primers require an anvil to explode them upon, the anvil sometimesbeing made in the head of the cartridge-shell, and in other cases separately from the shell 5 but in all cases, so far as I am aware, the anvil is composed of one or more pieces of metal separate and apart from the primer or cap.
The object of my present invention is to construct the cap and its anvil all from one and the same piece of metal. This I accomplish by first punching out the disk or blank that is to form the primer with a series of radial projections, e, as represented in Fig. 1, which shows both a plan and an edge view of the blank. This blank is then cupped or drawn up by means of a drawing machine, using a die and punch, in the usual manner, when it assumes the form shown in Fig. 2. The fulminate a is then placed in it, and'covered with a disk, b, of tin-foil, in the usual manner, as shown in section in Fig. 3. After this has been done it only remains to fold or turn the projections e inward, and press their ends down upon the foil and fulminate, as represented in Fig. 4, when the primer is complete. This latter operation is readily accomplished by means of one or more punches of the proper form; and, when thus completed, it will be seen that the three projections 0 meet at their inner ends, at or near the center of the cap,
and thus form an anvil upon which the fulminate can be exploded.
When the primer is inserted in the pocket of a shell so that its edge is held and supported firmly in place by the surrounding walls of the pocket, so it cannot yield, the inclined points or projections 0 will be held so as to afford the necessaryresistance to insure the explosion of the fulminate when the primer is struck by the point of the firing-pin or hammer.
If the projections e be made of such a length as to cause their inner ends, when turned inward, to touch or bear against each other, they will thus form a pyramidal arch, and, although made of thin metal, will ofi'er ample resistance to the blow of the firingpin or hammer.
Instead of three projections, 6, it is obvious that more or less may be used, and made to operate the same. In Figs. 5, 6, 7, and 8,1 have shown the primer with its anvil composed of two projections, they being arranged directly opposite each other. In Figs. 9,10,11, and-12, I have shown it made with a single projection, e, which is made at least twice as long as when two or more are used. In this case the projection or arm 0 is bent at the center so as to form an apex, which bears against the fulminate at the center, with its loose end bearing against the opposite side of the cap, as represented in Fig. 12, and by which means it is so braced andheld as to cause it to operate well as an anvil in resisting the blow required for explosion of the fulminate.
It is obvious that instead of having the projections e made in the form shown, they may be more or less varied, at will, and that in fact they may be formed of a series of points like saw-teeth, extending all around the edge of the disk or blank, it only being necessary to make them of such a length that when turned inward they shall form a bearing at or near the center of the fulminate, the principle of construction being the same Whatever the number or form of the projectionsused.
A primer thus made has its anvil always with it, and secured in such a manner that there is no danger of its becoming detached or lost. They are, moreover, simple and cheap to construct or manufacture.
Having thus described my invention, what I claim is 1. A primer the cap of which is formed from a piece of metal having one or more points or radial projections, 0, arranged to be turned inward, so as to form an anvil, substantially as shown and described.
2. An anvil for a primer, formed of one or more points, 0, of metal, attached to the edge of the cap, or the blank from which the cap is formed, and integral therewith, the said point or points being turned inward against the fulminate, substantially as and for the purpose herein set forth.
JOHN GARDNER. Witnesses:
DANIEL H. VEADER, JOSEPH J. SWEENEY.
Publications (1)
Publication Number | Publication Date |
---|---|
US214382A true US214382A (en) | 1879-04-15 |
Family
ID=2283786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US214382D Expired - Lifetime US214382A (en) | Improvement in primers for cartridges |
Country Status (1)
Country | Link |
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US (1) | US214382A (en) |
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0
- US US214382D patent/US214382A/en not_active Expired - Lifetime
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