US3260009A - Multi-barrel firearm with rotatable and reciprocable hammer - Google Patents

Multi-barrel firearm with rotatable and reciprocable hammer Download PDF

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US3260009A
US3260009A US420562A US42056264A US3260009A US 3260009 A US3260009 A US 3260009A US 420562 A US420562 A US 420562A US 42056264 A US42056264 A US 42056264A US 3260009 A US3260009 A US 3260009A
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hammer
firearm
housing
barrel
trigger
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US420562A
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Robert L Hillberg
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Olin Corp
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Olin Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/18—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms for multibarrel guns or multiple guns
    • F41A19/19—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms for multibarrel guns or multiple guns with single-trigger firing possibility
    • F41A19/21—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms for multibarrel guns or multiple guns with single-trigger firing possibility having only one trigger
    • F41A19/22—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms for multibarrel guns or multiple guns with single-trigger firing possibility having only one trigger and only one striker element
    • F41A19/23—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms for multibarrel guns or multiple guns with single-trigger firing possibility having only one trigger and only one striker element rotatable about an axis parallel to the barrel axis for firing subsequent barrels

Definitions

  • this invention relates to a four barrel break-open firearm which has a minimum number of working parts, is simple to operate even by inexperienced personnel, and is economical to manufacture.
  • the firearm of this invention is a four barrel weapon adapted for firing area type ammunition such as shotshells or the like. This type of ammunition compensates for the accuracy of inexperienced shooters, and the lack of time to take proper aim.
  • a fixed chamber aligned with each barrel accommodates a round of ammunition.
  • a squeeze type trigger adapted to be pulled by four fingers is operative to cook and index a single rotating hammer housed in the rear of the firearm. The hammer consecutively actuates a firing pin aligned with each chamber to fire the chamber.
  • the firing mechanism is not dependent in any way on recoil or other forces for its operation. A misfire in any given chamber will therefore not effect the firing of the rest of the unfired rounds.
  • a cam on the hammer is operative to rotate the hammer and cause a different chamber to be fired each time the trigger is pulled.
  • the firearm of this invention is compact, rugged, reliable, simple to operate and delivers high fire power at close ranges.
  • the design is rugged and simple so that the firearm can be readily air dropped and used effectively by unskilled shooters with great effect.
  • FIGURE 1 is a top plan view of the firearm of this invention.
  • FIGURE 2 is a sectional side view of the firearm of this invention taken along the line 2-2 of FIGURE 4.
  • FIGURE 3 is a side view partly sectioned showing the firearm of this invention broken open.
  • FIGURE 4 is a front view of the firearm of this invention.
  • FIGURE 5 is a sectional view taken along lines 5-5 in FIGURE 1.
  • FIGURE 6 is an end view of the rotary hammer used in the firearm of this invention.
  • FIGURE 7 is a side view of the hammer.
  • FIGURE 8 is a view showing the other end of the hammer.
  • the firearm comprises a front barrel housing 1 and a rear trigger housing 2 joined together by pivot pin 3.
  • the firearm is broken open for loading and unloading shells by pivoting about pin 3, as shown in FIGURE 3.
  • a latch 4 pivotally attached to barrel housing 1 interlocks with lugs 5 on rear housing 2 to lock the firearm in the firing position shown in FIGURE 2.
  • Latch 4 is provided with openings 6 which interlock with lugs 5.
  • a spring 7 and plunger 8 act on latch 4 to bias the latch toward its locked position.
  • the barrel housing 1 is provided with barrels, 9, 10, 11
  • the barrels 9-12 may be formed integral with the housing 1, or may comprise insel'ts fitted into the housing.
  • the front housing may consist of four individual barrels fastened together by suitable means.
  • a chamber is formed at the breech end of each barrel to accommodate a shotshell or the like.
  • a grip 13 may be provided on barrel housing 1 to facilitate handling the firearm.
  • The, grip 13 may be formed integral with the barrel housing or attached thereto by conventional means.
  • Trigger housing 2 includes a piston grip portion 14 which may be formed integral with the housing or attached thereto by conventional means.
  • a breech plug 17 is mounted in rear housing 2.
  • the breech plug has a hollow cylindrical rear portion 18 which accommodates a cylindrical rotating hammer 19.
  • Mounted in the breech plug are a plurality of firing pins 16.
  • a firing pin 16 is provided which is aligned with each of the chambers provided in front housing 1.
  • Each firing pin is provided with a spring (not shown) urging the firing pin rearwardly away from the chamber.
  • a snap ring or equivalent means is utilized to hold each of the firing pins 16 in the breech plug.
  • Hammer 19 includes a cylindrical body portion 20 and an enlarged rear shoulder 21.
  • the body portion 20 is concentrically housed in the hollow rear portion 18 of the breech plug 17.
  • a spring 22 extends between the inner end of the hammer 19 and a screw plug 23 which closes and provides access to the interior of the rear housing 2.
  • the spring 22 is guided by guide rod 24 formed integral with or attached to the breech plug 20 and extending rearwardly therefrom.
  • the cylindrical hammer 19 is provided with a cam track 30 formed on the outer surface thereof as clearly seen in FIGURE 7.
  • a pin 31 (see FIG. 2) mounted in rear housing 2 engages the cam track and causes the hammer to rotate as it is moved rearwardly and released by the trigger means described below.
  • a plurality of recesses 32, 33 and 34 (see FIG. 8-) are formed in the forward end of hammer 19. These recesses are aligned with firing pins mounted in the breech plug so that ⁇ those firing pins aligned with a recess are not engaged and fired. Only the single firing pin aligned with and engaged by the portion of the hammer face which is not recessed will be actuated.
  • a trigger 41 is pivotally mounted in grip portion 14 by means of a pivot pin 42.
  • Spring means 43 urges the trigger in a counterclockwise direction about the pivot pin.
  • a pawl 45 is mounted in a recess 46 formed in the upper portion of the trigger.
  • a spring 47 is mounted in recess 48 in the trigger and has portions 49 and 50 engaging a recess 51 formed in the pawl.
  • the firearm is broken open as seen in FIGURE 3 and shotshells are positioned in each of the flour chambers.
  • the gun is closed and is ready to be
  • the trigger 41 is then squeezed.
  • the trigger swings in an arc about pivot pin 42 carrying spring loaded pawl 45 on its upper surface.
  • the pawl 45 engages shoulder 21 on hammer 19 and moves the hammer rearwardly.
  • the pawl moves rearwardly in an arc, it releases the hammer which moves forward under spring force and strikes one of the firing pins 16. Since the :hammer is relieved at three sections 32, 33 and 34 on its face, only one firing pin is engaged by the hammer.
  • Pin 31 riding in cam track 30 on the hammer surface causes the hammer to rotate during each fore and aft reciprocation.
  • the firearm is fired again by squeezing the trigger until all four rounds are exhausted.
  • the firearm is then broken open and an ejector 54 seen tn FIGURE 5 aids in expelling the fired shells.
  • the firearm is then reloaded and ready to fire.
  • a multi-barrel firearm including a barrel housing and trigger housing pivotally joined together, a plurality of barrels each having a cartridge receiving chamber mounted in said barrel housing, a breech plug mounted in said trigger housing, a plurality of firing pins slidably mounted in said breech plug, each of said firing pins being aligned with a cartridge receiving chamber, a cylindrical rotary hammer mounted rearwardly of said firing pins, means mounting said rotary hammer in said trigger housing for rotation and for reciprocation toward and away from said firing pins along its longitudinal axis which is parallel to the longitudinal axes of said barrels, said rotary hammer including a forward face having recesses aligned with all but one of said firing pins so that said rotary hammer is engageable with only one firing pin at a time, a
  • trigger pivotally mounted in said trigger housing engageable with said hammer to move said hammer rearwardly relative to said breech plug and release said hammer each time said trigger is pulled, spring means biasing said hammer toward a forward position adjacent said breech plug, a cam track formed in the outer surface of said rotary hammer, and means mounted in said trigger housing engaging said cam track to rotate said hammer into engagement with another firing pin each time the hammer is moved fore and aft.
  • the firearm of claim 1 further including a circumferential shoulder provided on a rearward portion of said hammer and a pawl movably mounted on an upper portion of said trigger operatively engageable behind said shoulder to move said hammer rearwardly as the trigger is pulled.
  • the firearm of claim 1 including spring means to return said trigger to a forward position.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrophonic Musical Instruments (AREA)

Description

y 18966 R. L. HILLBERG 3,260,
MULTI-BARREL FIREARM WITH ROTATABLE AND RECIPROCABLE HAMMER Filed Dec. 23, 1964 5 Sheets-Sheet 1 r i a I k w O I I g BY EOBERT L./'//LLBE wmm ATTORNEY July 12, 1966 R. 1.. HILLBERG MUL'II-BARREL FIREARM WITH ROTATABLE AND RECIPROCABLE HAMMER s Sheets-Sheet z Filed Dec. 23,. 1964 INVENTOR. ROBERT L. H/LLBERG Mfim ATTORNEY July 12, 1966 L. HILLBERG 3,260,009
MULTI-BARREL FIREARM WITH ROTATABLE AND RECIPROCABLE HAMMER Filed Dec. 25, 1964 5 Sheets-Sheet 5 INVENTOR. ROBERT L. H/LLBERG BYM/FW A TZ'ORNEV United States Patent 3,260,009 MULTI-BARREL FIREARM WITH ROTATABLE AND RECIPROCABLE HAMMER Robert L. Hillberg, Cheshire, Conn., assignor to Olin Mathieson Corporation, a corporation of Virginia Filed Dec. 23, 1964, Ser. No. 420,562 3 Claims. (Cl. 42-69) This invention relates to a multi-barrel close range weapon with high killing potential.
More specifically, this invention relates to a four barrel break-open firearm which has a minimum number of working parts, is simple to operate even by inexperienced personnel, and is economical to manufacture.
The firearm of this invention is a four barrel weapon adapted for firing area type ammunition such as shotshells or the like. This type of ammunition compensates for the accuracy of inexperienced shooters, and the lack of time to take proper aim.
A fixed chamber aligned with each barrel accommodates a round of ammunition. A squeeze type trigger adapted to be pulled by four fingers is operative to cook and index a single rotating hammer housed in the rear of the firearm. The hammer consecutively actuates a firing pin aligned with each chamber to fire the chamber. The firing mechanism is not dependent in any way on recoil or other forces for its operation. A misfire in any given chamber will therefore not effect the firing of the rest of the unfired rounds.
A cam on the hammer is operative to rotate the hammer and cause a different chamber to be fired each time the trigger is pulled.
The firearm of this invention is compact, rugged, reliable, simple to operate and delivers high fire power at close ranges.
Because the firing mechanism is extremely simple and has very few moving parts, there is little chance for malfunctions. The action cannot become jammed as in more conventional firearms.
The design is rugged and simple so that the firearm can be readily air dropped and used effectively by unskilled shooters with great effect.
This invention will now be described in detail with reference to a preferred embodiment illustrated in the appended drawings in which:
FIGURE 1 is a top plan view of the firearm of this invention.
FIGURE 2 is a sectional side view of the firearm of this invention taken along the line 2-2 of FIGURE 4.
FIGURE 3 is a side view partly sectioned showing the firearm of this invention broken open.
FIGURE 4 is a front view of the firearm of this invention.
FIGURE 5 is a sectional view taken along lines 5-5 in FIGURE 1.
FIGURE 6 is an end view of the rotary hammer used in the firearm of this invention.
FIGURE 7 is a side view of the hammer.
FIGURE 8 is a view showing the other end of the hammer.
Referring now to the drawings, the firearm comprises a front barrel housing 1 and a rear trigger housing 2 joined together by pivot pin 3. The firearm is broken open for loading and unloading shells by pivoting about pin 3, as shown in FIGURE 3.
A latch 4 pivotally attached to barrel housing 1 interlocks with lugs 5 on rear housing 2 to lock the firearm in the firing position shown in FIGURE 2. Latch 4 is provided with openings 6 which interlock with lugs 5. A spring 7 and plunger 8 act on latch 4 to bias the latch toward its locked position.
The barrel housing 1 is provided with barrels, 9, 10, 11
Patented July 12, 1966 and 12 as seen in FIGURE 4. The barrels 9-12 may be formed integral with the housing 1, or may comprise insel'ts fitted into the housing. Alternatively, the front housing may consist of four individual barrels fastened together by suitable means.
A chamber is formed at the breech end of each barrel to accommodate a shotshell or the like.
A grip 13 may be provided on barrel housing 1 to facilitate handling the firearm. The, grip 13 may be formed integral with the barrel housing or attached thereto by conventional means.
Trigger housing 2 includes a piston grip portion 14 which may be formed integral with the housing or attached thereto by conventional means.
A breech plug 17 is mounted in rear housing 2. The breech plug has a hollow cylindrical rear portion 18 which accommodates a cylindrical rotating hammer 19. Mounted in the breech plug are a plurality of firing pins 16. A firing pin 16 is provided which is aligned with each of the chambers provided in front housing 1. Each firing pin is provided with a spring (not shown) urging the firing pin rearwardly away from the chamber. A snap ring or equivalent means is utilized to hold each of the firing pins 16 in the breech plug.
Hammer 19 includes a cylindrical body portion 20 and an enlarged rear shoulder 21. The body portion 20 is concentrically housed in the hollow rear portion 18 of the breech plug 17. A spring 22 extends between the inner end of the hammer 19 and a screw plug 23 which closes and provides access to the interior of the rear housing 2. The spring 22 is guided by guide rod 24 formed integral with or attached to the breech plug 20 and extending rearwardly therefrom.
The cylindrical hammer 19 is provided with a cam track 30 formed on the outer surface thereof as clearly seen in FIGURE 7. A pin 31 (see FIG. 2) mounted in rear housing 2 engages the cam track and causes the hammer to rotate as it is moved rearwardly and released by the trigger means described below. A plurality of recesses 32, 33 and 34 (see FIG. 8-) are formed in the forward end of hammer 19. These recesses are aligned with firing pins mounted in the breech plug so that \those firing pins aligned with a recess are not engaged and fired. Only the single firing pin aligned with and engaged by the portion of the hammer face which is not recessed will be actuated.
A trigger 41 is pivotally mounted in grip portion 14 by means of a pivot pin 42. Spring means 43 urges the trigger in a counterclockwise direction about the pivot pin. A pawl 45 is mounted in a recess 46 formed in the upper portion of the trigger. A spring 47 is mounted in recess 48 in the trigger and has portions 49 and 50 engaging a recess 51 formed in the pawl.
In operation, the firearm is broken open as seen in FIGURE 3 and shotshells are positioned in each of the flour chambers. The gun is closed and is ready to be The trigger 41 is then squeezed. The trigger swings in an arc about pivot pin 42 carrying spring loaded pawl 45 on its upper surface. The pawl 45 engages shoulder 21 on hammer 19 and moves the hammer rearwardly. As the hammer moves rearwardly, it compresses hammer spring 22. As the pawl moves rearwardly in an arc, it releases the hammer which moves forward under spring force and strikes one of the firing pins 16. Since the :hammer is relieved at three sections 32, 33 and 34 on its face, only one firing pin is engaged by the hammer. Pin 31 riding in cam track 30 on the hammer surface causes the hammer to rotate during each fore and aft reciprocation.
When the trigger 41 is released, it is returned to its normal firing position by spring 43 and pawl 45 is snapped back into place by pawl spring 47 which allows pawl 45 to ride over and engage behind shoulder 21 on hammer 19.
The firearm is fired again by squeezing the trigger until all four rounds are exhausted.
The firearm is then broken open and an ejector 54 seen tn FIGURE 5 aids in expelling the fired shells.
The firearm is then reloaded and ready to fire.
While this invention has been described in detail with reference to a preferred embodiment illustrated in the drawings, various design changes and modifications are also contemplated which are within the spirit and scope of the appended claims.
I claim:
1. A multi-barrel firearm including a barrel housing and trigger housing pivotally joined together, a plurality of barrels each having a cartridge receiving chamber mounted in said barrel housing, a breech plug mounted in said trigger housing, a plurality of firing pins slidably mounted in said breech plug, each of said firing pins being aligned with a cartridge receiving chamber, a cylindrical rotary hammer mounted rearwardly of said firing pins, means mounting said rotary hammer in said trigger housing for rotation and for reciprocation toward and away from said firing pins along its longitudinal axis which is parallel to the longitudinal axes of said barrels, said rotary hammer including a forward face having recesses aligned with all but one of said firing pins so that said rotary hammer is engageable with only one firing pin at a time, a
trigger pivotally mounted in said trigger housing engageable with said hammer to move said hammer rearwardly relative to said breech plug and release said hammer each time said trigger is pulled, spring means biasing said hammer toward a forward position adjacent said breech plug, a cam track formed in the outer surface of said rotary hammer, and means mounted in said trigger housing engaging said cam track to rotate said hammer into engagement with another firing pin each time the hammer is moved fore and aft.
2. The firearm of claim 1 further including a circumferential shoulder provided on a rearward portion of said hammer and a pawl movably mounted on an upper portion of said trigger operatively engageable behind said shoulder to move said hammer rearwardly as the trigger is pulled.
3. The firearm of claim 1 including spring means to return said trigger to a forward position.
References Cited by the Examiner UNITED STATES PATENTS 22,753 1/1859 Sharps 42-40 1,637,079 7/1927 Karner 4269 2,354,025 7/ 1944 Johnson 42-1 FOREIGN PATENTS 5,254 6/1892 Switzerland.
BENJAMIN A. BORCHELT, Primary Examiner.

Claims (1)

1. A MULTI-BARREL FIREARM INCLUDING A BARREL HOUSING AND TRIGGER HOUSING PIVOTALLY JOINED TOGETHER, A PLURALITY OF BARRELS EACH HAVING A CARTRIDGE RECEIVING CHAMBER MOUNTED IN SAID BARREL HOUSING, A BREECH PLUG MOUNTED IN SAID TRIGGER HOUSING, A PLURALITY OF FIRING PINS SLIDABLY MOUNTED IN SAID BREECH PLUG, EACH OF SAID FIRING PINS BEING ALIGNED WITH A CARTRIDGE RECEIVING CHAMBER, A CYLINDRICAL ROTARY HAMMER MOUNTED REARWARDLY OF SAID FIRING PINS, MEANS MOUNTING SAID ROTARY HAMMER IN SAID TRIGGER HOUSING FOR ROTATION AND FOR RECIPROCATION TOWARD AND AWAY FROM SAID FIRING PINS ALONG ITS LONGITUDINAL AXIS WHICH IS PARALLEL TO THE LONGITUDINAL AXES OF SAID BARRELS, SAID ROTARY HAMMER INCLUDING A FORWARD FACE HAVING RECESSES ALIGNED WITH ALL BUT ONE OF SAID FIRING PINS SO THAT SAID ROTARY HAM-
US420562A 1964-12-23 1964-12-23 Multi-barrel firearm with rotatable and reciprocable hammer Expired - Lifetime US3260009A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0209248A1 (en) * 1985-06-14 1987-01-21 Aserma Manufacturing A Division Of O.M.C. Aserma (Proprietary) Limited Firearm
US20060219750A1 (en) * 2005-04-05 2006-10-05 Kwok Ming Y Multiple variable outlets shooting apparatus
US20120291324A1 (en) * 2011-05-19 2012-11-22 Arsenal Firearms Finance Limited Double-barrelled gun and two-row magazine
US9062929B2 (en) * 2010-12-22 2015-06-23 DoubleTap Defense, LLC Two shot pistol
RU2558162C2 (en) * 2013-12-17 2015-07-27 Открытое Акционерное Общество Научно-Производственное Предприятие "Альфа-Прибор" Multi-barrelled shooting module
US20160258702A1 (en) * 2014-11-21 2016-09-08 John Klein Barrel locking mechanism for a break-open-action firearm

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US22753A (en) * 1859-01-25 Improvement in breech-loading repeating fire-arms
CH5254A (en) * 1892-06-28 1892-11-15 Grusonwerk Ag Multi-barrel pistol with a striking pin that can be rotated around the barrel axis
US1637079A (en) * 1924-11-07 1927-07-26 Jr Joseph W Karner Gas gun
US2354025A (en) * 1942-07-20 1944-07-18 Kilgore Mfg Co Firearm

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US22753A (en) * 1859-01-25 Improvement in breech-loading repeating fire-arms
CH5254A (en) * 1892-06-28 1892-11-15 Grusonwerk Ag Multi-barrel pistol with a striking pin that can be rotated around the barrel axis
US1637079A (en) * 1924-11-07 1927-07-26 Jr Joseph W Karner Gas gun
US2354025A (en) * 1942-07-20 1944-07-18 Kilgore Mfg Co Firearm

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0209248A1 (en) * 1985-06-14 1987-01-21 Aserma Manufacturing A Division Of O.M.C. Aserma (Proprietary) Limited Firearm
US4722148A (en) * 1985-06-14 1988-02-02 Aserma Manufacturing A Division Of O.M.C., Aserma (Proprietary) Limited Firearm
US20060219750A1 (en) * 2005-04-05 2006-10-05 Kwok Ming Y Multiple variable outlets shooting apparatus
US8082199B2 (en) 2005-04-05 2011-12-20 Ming Yat Kwok Multiple variable outlets shooting apparatus
US9062929B2 (en) * 2010-12-22 2015-06-23 DoubleTap Defense, LLC Two shot pistol
US20120291324A1 (en) * 2011-05-19 2012-11-22 Arsenal Firearms Finance Limited Double-barrelled gun and two-row magazine
US9995547B2 (en) * 2011-05-19 2018-06-12 Arsenal Firearms Finance Limited Double-barrelled gun and two-row magazine
US11293708B2 (en) 2011-05-19 2022-04-05 Arsenal Firearms Finance Limited Double-barrelled gun and two-row magazine
RU2558162C2 (en) * 2013-12-17 2015-07-27 Открытое Акционерное Общество Научно-Производственное Предприятие "Альфа-Прибор" Multi-barrelled shooting module
US20160258702A1 (en) * 2014-11-21 2016-09-08 John Klein Barrel locking mechanism for a break-open-action firearm

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