U.S. patent application number 10/907097 was filed with the patent office on 2006-09-21 for improved self-opening action.
Invention is credited to Ernest R. Lazor.
Application Number | 20060207148 10/907097 |
Document ID | / |
Family ID | 37008811 |
Filed Date | 2006-09-21 |
United States Patent
Application |
20060207148 |
Kind Code |
A1 |
Lazor; Ernest R. |
September 21, 2006 |
IMPROVED SELF-OPENING ACTION
Abstract
The Improved Self-opening Action uses the spring energy of the
extractors and the firearm's frame to self-open the gun. This
improvement uses fewer parts than other designs and opens and
closes with less effort due to its greater mechanical
advantage.
Inventors: |
Lazor; Ernest R.;
(Southbury, CT) |
Correspondence
Address: |
Mr.Ernest R. Lazor
135 Ridgeview Road
Southbury
CT
06488
US
|
Family ID: |
37008811 |
Appl. No.: |
10/907097 |
Filed: |
March 19, 2005 |
Current U.S.
Class: |
42/46 |
Current CPC
Class: |
F41A 15/06 20130101;
F41C 7/11 20130101 |
Class at
Publication: |
042/046 |
International
Class: |
F41A 15/00 20060101
F41A015/00 |
Claims
1. A self-opening action for a firearm, comprising: a spring force
as a means to remove the shell from the firearm's chamber, a means
of channeling said spring force to a rotational force around the
firearm action opening pivot point, whereby said firearm action is
assisted in opening.
Description
BACKGROUND
Field of Invention
[0001] This invention relates to firearms and improvements to
opening and cocking the action with less effort.
BACKGROUND OF THE INVENTION
Description of the Related Art
[0002] Most firearms are manually broken open without assisted
opening. Depending on the type of action and spring strength,
considerable human effort may be needed by the shooter to open and
cock their firearm.
[0003] A refinement found on some quality firearms is the
self-opening mechanism. This allows the gun to be opened quickly
and easily, often one-handed. Gunmakers Purdey and Holland &
Holland produce the two main types of self-opening mechanisms. The
Holland & Holland, the most common, uses a separate compressor
fitted underneath the barrels to open the action and is easier to
manufacture. The Purdey self-opener is an integral part of the
action. Two levers in the bar of the action are powered by the
action's mainspring. While the Purdey system opens the gun with
less effort it takes more effort to close. British gunmaker Boss'
standard action provides a slight unintended assist from the
ejectors when they push against the breech face upon opening the
gun.
[0004] This invention improves on prior designs by using the spring
force of the extractors and the firearm's frame to channel this
force in a time-controlled fashion to assist the self-opening and
cocking of the gun. Because of the leverage advantage, the shooter
does not sense any additional effort to close the gun.
SUMMARY OF THE INVENTION
[0005] This improved design uses the spring force of the extractors
and the firearm's frame to channel this energy in a time-controlled
fashion to assist in self-opening and cocking the gun. The existing
spring force of the extractors is channeled to the pivot point of
the frame and acts like a fulcrum with the barrels providing the
leverage advantage to easily open, cock and close the gun.
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] FIG. 1 is a view with a transparent Block to illustrate all
of the working parts of the Improved Self-Opening Action.
[0007] FIG. 2 is a detailed view of the Improved Self-Opening
Action highlighting key features of this invention.
[0008] FIG. 3 details the front view of the extractor and crescent
along with back views of these parts.
REFERENCE NUMERALS
[0009] 1 Frame--front portion
[0010] 1A Frame pivot point
[0011] 1B Frame pocket for crescent
[0012] 2 Crescent
[0013] 2A Crescent frame pocket engagement boss
[0014] 2B Crescent containment pocket
[0015] 2C Crescent pivot boss
[0016] 2D Crescent containment boss
[0017] 3 Extractor
[0018] 3A Extractor spring
[0019] 3B Extractor guide pin
[0020] 3C Extractor containment pocket
[0021] 3D Extractor pivot boss
[0022] 3E Extractor containment boss
[0023] 3F Extractor face
[0024] 4 Mono-block or Chopper block ["Block"]
DETAILED DESCRIPTION OF THE INVENTION
[0025] This improved design uses the spring force of the extractors
and the firearm's frame to channel this energy in a time-controlled
fashion to assist in self-opening and cocking the gun. The existing
spring force of the extractors is channeled to the pivot point of
the frame that acts like a fulcrum with the barrels providing the
leverage advantage to easily open, cock and close the gun.
[0026] FIG. 1's view with a transparent Block illustrates all of
the working parts of the Improved Self-Opening Action. The critical
portion of the frame 1, in relation to this invention, is shown.
The crescent 2 is positioned in the frame by placing the crescent's
frame pocket engagement boss in the frame's pocket for the crescent
1B. The crescent 2 is interlocked to the extractor 3 and is not
removable when the gun is fully assembled. The extractor spring 3A
exerts spring pressure on the extractor guide pin 3B that connects
to the extractor face 3F. Since the crescent 2 is both interlocked
to the extractor 3 and the frame in the frame's pocket for the
crescent 1B, the extraction motion powered by the extractor spring
will assist or self-open the gun once the opening process is
initiated. The Block 4 encloses or contains the action
components.
[0027] FIG. 2's detailed view of the Improved Self-Opening Action
highlights key features of this invention. The crescent is removed
from this illustration to show the Frame pocket for crescent 1B and
the extractor 3 interlocking surfaces. The shape of the Frame
pocket for crescent 1B keeps the crescent firmly seated when the
gun is opened and closed. The location of the Frame pocket for
crescent 1B is the fulcrum point for the barrel assembly acting a
lever with great mechanical advantage with the self-opening
assistance provided by the extraction motion translates into an
easy opening and closing gun
[0028] FIG. 3 details the front and back views respectively of the
extractor and crescent. The crescent pivot boss 2C goes into the
Extractor containment pocket 3C and the Extractor pivot boss 3D
goes into the Crescent containment pocket 2B. The Extractor
containment boss 3E and the Crescent containment boss 2D keep the
Crescent 2 and Extractor 3 interlocked, but able to pivot. The
shapes of the Extractor pivot boss 3D and crescent pivot boss 2C
provide a cam action that allows the crescent to rotate and
transform the spring action to a self-opening action.
[0029] In summary, by utilizing the extraction process and
mechanics this design simplifies the self-opening action and aligns
the fulcrum point with the pivot point to provide better mechanical
advantage in opening, cocking and closing the gun.
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