US1181849A - Projectile. - Google Patents

Projectile. Download PDF

Info

Publication number
US1181849A
US1181849A US5675815A US5675815A US1181849A US 1181849 A US1181849 A US 1181849A US 5675815 A US5675815 A US 5675815A US 5675815 A US5675815 A US 5675815A US 1181849 A US1181849 A US 1181849A
Authority
US
United States
Prior art keywords
projectile
ribs
grooves
bore
forward end
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
Application number
US5675815A
Inventor
George F Coomber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US5675815A priority Critical patent/US1181849A/en
Application granted granted Critical
Publication of US1181849A publication Critical patent/US1181849A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/02—Stabilising arrangements
    • F42B10/26—Stabilising arrangements using spin
    • F42B10/28—Stabilising arrangements using spin induced by gas action
    • F42B10/30—Stabilising arrangements using spin induced by gas action using rocket motor nozzles

Definitions

  • My invention relates to new and useful improvements in projectiles of that class to be used in connection with fire arms, cannon and the like, and'my object is to provide means for causing the rojectile to spin or rotate after leaving the ore of the fire arm. And a further object is to so construct the projectile as to snugly fit the bore of the fire arm to prevent the force of the powder from I passing around the projectile.
  • Figure l is a perspective view of the projectile; Fig. 2 is aside elevation thereof, and Fig. 3 is a rear end elevation.
  • the grooves-and ribs occupy substantially two-thirds the length of the projectile
  • the projectile By constructing the projectile in this man ner, it is not necessary to provide the usual rifling Within the bore of the fire arm as the grooves at the forward end of the projectile andthe ribs at the rear end thereof willcause the projectile to rapidly rotate after leaving the bore of the firearm. It will likewise be seen that by providing the spirally arranged grooves in the forward end of the projectile, a greater rotating force will be imparted to the projectile than would be 0btained with the use of the ribs alone, as the-- I pressure of the air is greater at the forward end of the projectilethan at the rear end. It will likewise be understood that if desired, the spiral trend of the grooves and ribs may be either to the right orleft as occasion may require.
  • a projectile for firearms having spirally arranged grooves at its forward end and spirally arranged ribs at its rear end, said ribs being tangentially arranged to-the axis of the projectile, the rear ends oftthe ribs extending from the axial center of the pros.

Description

G. F. COOMBER.
PROJECTILE. APPLICATION man ocT.19.1915.
1,181,849. Patentd m 2,- 1916.
Wifncooo GEORGE F. coommn, or KANSAS cm, mssoom.
rnomcrmn.
Specification of ELetters Patent.
' Patented Ma 2, 1916 Application filed October 19, 1915. Serial m. 56,758.
To all whom it may concern:
Be it lmown that L-Gnoncn F; Coo BnR, a citizen of the United States, residing'at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Projectiles; and I do hereby declare the following to be a full,
clear, and exact description of the invention, such as will enable others skilled in the art to'which it appertains to make and use the same.
My invention relates to new and useful improvements in projectiles of that class to be used in connection with fire arms, cannon and the like, and'my object is to provide means for causing the rojectile to spin or rotate after leaving the ore of the fire arm. And a further object is to so construct the projectile as to snugly fit the bore of the fire arm to prevent the force of the powder from I passing around the projectile.
Other objects and advantages will be hereinafter set forth, and more particularly pointed out in the accompanying specification.
In the accompanying drawings which are made apart of this application, Figure l is a perspective view of the projectile; Fig. 2 is aside elevation thereof, and Fig. 3 is a rear end elevation.
Referring to the drawings in which similar reference numerals designate corresponding parts throughout the several views,1 indicates the projectile, the forward end of which is tapered in the usual manner and said forward end is priwided with a plurality of spirally arranged grooves 2' which trend lengthwise of the projectile and 3'i'nd1- cates ribs at the rear end of the projectile formed by cutting away portions of the body of the projectile, said ribs likewise extending spirally of the projectile and lengthwise thereof.
The grooves-and ribs occupy substantially two-thirds the length of the projectile,
thereby leaving a solid portion 4: between the spiral grooves and ribs, said solid portion being designed to fill the bore of the fire arm in which the projectile is used to prevent the force of the powder or gases from.
escaping from the bore of the firearm around the projectile. j I
By constructing the projectile in this man ner, it is not necessary to provide the usual rifling Within the bore of the fire arm as the grooves at the forward end of the projectile andthe ribs at the rear end thereof willcause the projectile to rapidly rotate after leaving the bore of the firearm. It will likewise be seen that by providing the spirally arranged grooves in the forward end of the projectile, a greater rotating force will be imparted to the projectile than would be 0btained with the use of the ribs alone, as the-- I pressure of the air is greater at the forward end of the projectilethan at the rear end. It will likewise be understood that if desired, the spiral trend of the grooves and ribs may be either to the right orleft as occasion may require.
The. improved rotation causing increased gyroscopic action will tend to cause'the more direct course of the projectile to the end of its flight.
Havin thus fully described my invention what I c aimas new and desireto secure by.
Letters Patent. of the United States, is':--
A projectile for firearms having spirally arranged grooves at its forward end and spirally arranged ribs at its rear end, said ribs being tangentially arranged to-the axis of the projectile, the rear ends oftthe ribs extending from the axial center of the pros.
- jectile to the outer periphery thereof, said ribs decreasing in depth from their rear to their forward ends, said grooves and' ribs being separated by a solid diameter of the projectile.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
GEORGE F .COOMBER.
' Witnesses: i
' JAMES F. REED,
DENNIS R. MCDERMOTT.
Copies of this patent may be obtaini for live cents each, by addressing the (maintainer of Washington, D. 0.
portion the full
US5675815A 1915-10-19 1915-10-19 Projectile. Expired - Lifetime US1181849A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US5675815A US1181849A (en) 1915-10-19 1915-10-19 Projectile.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5675815A US1181849A (en) 1915-10-19 1915-10-19 Projectile.

Publications (1)

Publication Number Publication Date
US1181849A true US1181849A (en) 1916-05-02

Family

ID=3249823

Family Applications (1)

Application Number Title Priority Date Filing Date
US5675815A Expired - Lifetime US1181849A (en) 1915-10-19 1915-10-19 Projectile.

Country Status (1)

Country Link
US (1) US1181849A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4718348A (en) * 1986-05-16 1988-01-12 Ferrigno John E Grooved projectiles
US6640722B2 (en) * 2001-09-19 2003-11-04 Armaturen-Gmbh Shell cap
US20140318405A1 (en) * 2011-08-08 2014-10-30 Ruag Ammotec Gmbh Structuring of the ogive surface of a projectile

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4718348A (en) * 1986-05-16 1988-01-12 Ferrigno John E Grooved projectiles
US6640722B2 (en) * 2001-09-19 2003-11-04 Armaturen-Gmbh Shell cap
US20140318405A1 (en) * 2011-08-08 2014-10-30 Ruag Ammotec Gmbh Structuring of the ogive surface of a projectile
US9488453B2 (en) * 2011-08-08 2016-11-08 Ruag Ammotec Gmbh Structuring of the ogive surface of a projectile

Similar Documents

Publication Publication Date Title
US1536164A (en) Projectile
US1198035A (en) Projectile.
US1305967A (en) Explosive shell.
US1243542A (en) Projectile.
US46490A (en) Improvement in projectiles
US1181849A (en) Projectile.
US511418A (en) Projectile
US592437A (en) Peter oberhammer
US1278786A (en) Cartridge.
US487125A (en) Jacques antoine creuzx de latouche
US922638A (en) Bullet and projectile.
US1380172A (en) Self-propelled projectile
US399880A (en) James weir graydon
US195040A (en) Improvement in projectiles for smooth-bore cannon
US35503A (en) beowke
US14742A (en) Improvement in projectiles for fire-arms
US1302720A (en) Projectile.
US1285599A (en) Projectile.
US1209611A (en) Projectile.
US216552A (en) Improvement in pyrotechniosignal cartridges
US677179A (en) Projectile.
US374874A (en) Alfred chrtstophe koerner
US137491A (en) Improvement in explosive shells
US451088A (en) Projectile
US576038A (en) High explosive projectile