US2387669A - Firearm - Google Patents
Firearm Download PDFInfo
- Publication number
- US2387669A US2387669A US495164A US49516443A US2387669A US 2387669 A US2387669 A US 2387669A US 495164 A US495164 A US 495164A US 49516443 A US49516443 A US 49516443A US 2387669 A US2387669 A US 2387669A
- Authority
- US
- United States
- Prior art keywords
- safety
- trigger
- receiver
- bearing
- firearm
- 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
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Classifications
-
- 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
- F41A17/00—Safety arrangements, e.g. safeties
- F41A17/46—Trigger safeties, i.e. means for preventing trigger movement
Definitions
- 'I'he present inventon relates to an improvementzin firearms, and particularly to the safety mechanism for locking and releasing the fire control mechanism thereof.
- An object ofthe invention is to vprovide a safety mechanism having an adjustable mounting within the receiver of the whereby the cooperative engagement between the safety member of the mechanism and ⁇ the trigger may be accurately adjusted to secure proper correlation between them, 'in order tov insure the reliable functioning of the firearm, and wherein such adjustment and precision relation may be accomplished Without regard to the accuracy or iit ⁇ of other related Vparts of the re control mechanism.
- the invention is especially adapted for use in ajriiie structure wherein the receiver-is in the form of a formed sheet metal member of relatively inexpensive manufacture,y and wherein the fire control-mechanism consists of several stamped parts having spaced connection and mounting points.
- the cumulative error due to the added tolerances between the several associated parts and their connection and mounting points, produces a relativelywide range of variation at the point of correlation between the safety member and the trigger; ⁇
- no adjustment is provided in the correlation between the safety member and the trigger, except through selective assembly.
- the safety members are purposely'made in lots of variousl sizes, i.
- the cam lobes that block the trigger are disposed at different radial distances from the center, the safety members being carefully gauged and segregated into lots according to size.
- a Astandard or median safety member is inserted in place and completely assembled with its cooperating parts in working correlation. This serves as a trial assembly and may or may not fall within the required tolerance. Inasmueh as no means is available for determining the required size of the safety membei prior to this trial assembly, avery consid- Aerable'number of these assemblies have to be disassembled on account of improperly tting safety members.
- a further object is to provide a safety mechanism which may be readjusted after long use of the iirearm in order to compensate .for wear of the Darts.
- Fig. 1 is a side elevation, partially broken away', ⁇ of the receiver portion of a firearm embodying a safety mechanism according to the illustrated exemplary embodiment of the invention.l Y
- Fig. 2 is a detail side elevation, on an enlarged scale, of the safety mechanism mounted in the receiver.
- Fig. 3 is an end elevation.
- Fig. 4 is a transverse vertical sectional view, taken along the line 4 4 of Fig. 2.
- Fig. 5 is a perspective VKview showing the several parts of the safety mechanism in separated relation.
- the firearm illustrated by way of example and embodying the safety mechanism of the invention, comprises a receiver I0, in the form of a formed sheet metal part having a lower longitudinal portion of U- shape in cross-section and an upper longitudinal portion of cylindrical form in cross-section, the gun stock Il being secured to the lower side and to the ends of the receiver and the barrel i2 being secured within the forward end of the upper cylindrical portion thereof.
- the reciprocating bolt I3 Within the upper portion of the receiver is engaged the reciprocating bolt I3, the operating handle I4 of which Vis engaged in a circumferential and longitudinal slot formation l5 in the receiver, the bolt being provided with a longitudinal spring-actuated firing pin I6 adapted to be cocked in the usual manner through operation of the bolt handle.
- the ring pin is provided in its under side with a shouldered notch l1 which is engaged in the cocked position by the nose I8 of a. sear I9, of bell-crank form pivotally mounted at its end upon apivot screw member screwed into a threaded hole 2l in the side wall of the receiver.
- the sear is pivotallyv connected by a pivot screw 22 to the inner end* signed to engage the extension portion 26 of the trigger rearwardly of the detent pin 29 to hold the trigger down when the safety mechanism is in itson or safe position.
- the lobe of the cam comes up against the detent pin 29, which is spring drged against the periphery of the safety member to respectively engage of the trigger 23, the latter being provided with j a cross shaft 24 pivot-,ally engaged at its ends in pivot bearing holes 25 in the" side walls of the receiver.
- the trigger is provided with a rearward extension 26 for. cooperation with the safety mechanism, the iinger .piece 21 of the trigger extending downwardly from this extension and being provided with a cylindrical bore 28 in which is engaged a detent pin 29, normally pressed outwardly by means of a spring 30.within the bore beneaththepin.L Y
- the parts of the fire control mechanism thus far described include the receiven. the sear, the trigger, and the connection and mounting Ameans for securing these parts in assembled relation. 'Ihe added tolerances of these several parts and their mounting and connection means mayv produce considerable variation in the pointofc'orrelation between the trigger and the safety mechanism cooperating therewith, and the safety mechanism according to the invention has for its purpose the compensating by adjustment for such ⁇ variation.
- ,v having its axis along a transverse line inspaced relation substantially directly above the detent pin 29 of the trigger, and in the opposed side wallthere is provided a cylindrical threaded aperture 32, the axis of which is forwardly offset from Ythe axis of the bearing aperture 3
- the safety 'mechanism which is mounted in relationto-these apertures, comprises a safety cam member 33 adapted to be positionedr substantially inY the central vertical plane of., thel receiver (in cor-rela.- tion with the detent pin of thetriggen-being provided at one side with ahub'including la cylindrical spacer portion '34, a bearing ⁇ portion of reduced diameter for engagement lir'ilthe aperture 3l, and a lever mounting neck portion 36 of further reduced diameter for receiving the actuating lever 31, Vthe neck portion being provided with diametrically vdisposed slots-38 engaged by lugs 33 in the aperture 40 of, the'plever to rigidly connect the lever to the safetycam member.
- the safety cam member isprovided with an axial bore 4
- a retaining shaft member 43 is engaged "and projected through the bore ofthe cam, member, being provided at its outerend witlna head1-44',
- a firearm comprising a Yreceiver containing a firing mechanism havinga sear operating trigger, safety means for blocking andireleasing the action of said trigger comprising a safety cam member having rotatable bearing support in said receiver at one side, and an eccentric vbushing adjustably engaged in said receiver and constitutif ing a bearing support vfor, said safety member at the other side, relative rotary adjustment of said eccentric bushing adapted to move saidjsafety member to establish its proper Ycorrelationywith said trigger.
- safety means for blocking andireleasing the action of said trigger comprising a safety cam member having rotatable bearing support in said receiver at one side, and an eccentric vbushing adjustably engaged in said receiver and constitutif ing a bearing support vfor, said safety member at the other side, relative rotary adjustment of said eccentric bushing adapted to move saidjsafety member to establish its proper Ycorrelationywith said trigger.
- a firearm comprising a receivercontaining a ring mechanism having asear operating trigger, safety means for blocking and releasing the action of the trigger comprising a safetybam member having rotatable bearing supportin said receiver at one side, a retaining screw-shaft engaged through said cam member having a bearing end projecting into relation with the receiver at the other-side, and an eccentric bushing Yad-,- ⁇ justably engaged in said receiverhaving anY eccentric bearing constituting a bearing support for said bearing end of said shaft, relative Arotaryjacl'- justment of saideccentric ,bushingV being adapted to move said safety member to establish itsfproper correlation withrsaid trigger.
- a firearm comprisingY areceiver containing a firing mechanism having a Aserar operating trigger, safety means for blocking and Yreleasing the actionV of thetrigger-comprising a safet'yfcam member having rotatable bearing support in said receiver at one side, a retainingscrewlshaft erigaged through said Acam member havinga bearing end projecting into relation with the Kreceiver at the other side, and an "eccentric -bushingadjustably engaged in said receiver having an eccentric bearing constituting a bearing support for said bearing end of said shaft, relative rotary adjustment of said eccentric bushing being adapted to move said safety member to establish its proper correlation with said trigger, the bearing engagement of said safety cam member and shaft in said receiver and bushing having sufficient clearance to permit of necessary angular movement during adjustment.
- a firearm comprising a receiver; a trigger mechanism mounted in said receiver; a safety mechanism cooperating with said trigger mechanism and comprising a rotatabie shaft member; and means for ⁇ adjusting said safety mechanism with respect to said trigger mechanism to compensate for variations in .the sizes thereof comprising a circular bushing threaded into said receiver and provided With an eccentrically positioned opening forming a bearing for said shaft member.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Emergency Lowering Means (AREA)
Description
Oct. 23, 1945. c. c. LooMls 2,387,669
FIREARM Filed July 1'7",A 1943 f2 @1' f@ @mf/ v VENT R ERAWFURD Dummla.
@glia ATTORNEY Patented Oct. 23, 1945 UNITED STATES PATENT," 1 ,f fv' 1"Y f .2,387,669 g FIREARM Crawford C., Loomis, Ilion, N. Y., assigner to Remington Arms Company, Inc., Bridgeport,
Conn.,la corporation of Delaware Application July 17, 1943, Seria1.No.495,164
4 Claims.
" 'I'he present inventonrelates to an improvementzin firearms, and particularly to the safety mechanism for locking and releasing the fire control mechanism thereof. An object ofthe inventionis to vprovide a safety mechanism having an adjustable mounting within the receiver of the whereby the cooperative engagement between the safety member of the mechanism and `the trigger may be accurately adjusted to secure proper correlation between them, 'in order tov insure the reliable functioning of the firearm, and wherein such adjustment and precision relation may be accomplished Without regard to the accuracy or iit `of other related Vparts of the re control mechanism.
"The invention is especially adapted for use in ajriiie structure wherein the receiver-is in the form of a formed sheet metal member of relatively inexpensive manufacture,y and wherein the lire control-mechanism consists of several stamped parts having spaced connection and mounting points. In this type of iirearm structure the cumulative error, due to the added tolerances between the several associated parts and their connection and mounting points, produces a relativelywide range of variation at the point of correlation between the safety member and the trigger;` Under present practice no adjustment is provided in the correlation between the safety member and the trigger, except through selective assembly. According to this practice the safety membersare purposely'made in lots of variousl sizes, i. e., the cam lobes that block the trigger are disposed at different radial distances from the center, the safety members being carefully gauged and segregated into lots according to size. In assembly a Astandard or median safety member is inserted in place and completely assembled with its cooperating parts in working correlation. This serves as a trial assembly and may or may not fall within the required tolerance. Inasmueh as no means is available for determining the required size of the safety membei prior to this trial assembly, avery consid- Aerable'number of these assemblies have to be disassembled on account of improperly tting safety members. Under such circumstances, another safety Vmember is selected and the complete assembly vof these `partsl gone through with the possibilityl 'that the second selection will not fall withinA the required limits. Considerable time is consumed in disassembling and reassembling these parts, and although a precision correlation between them is highly desirable, because of the 'criticar-function involved, the inherent cost in the quantity production of 4lor-w cos-t li-rearms'prohibits fitting these parts Within V-very closelimits;
Itis proposed according to the present inven-4 tion to provide adjustment means in the form of an eccentric bushing adaptedto be turned after the parts are assembled in working correlation, to precisely 'position the safety member in Afitting relation with the trigger, the bushing being thereupon fixed in its adjusted position. According to the invention safety members of a single standard size may be produced, and through lthe adjustable mounting made to precisely t in correlation with firearm assemblies having a wide range of tolerance variation.
A further object is to provide a safety mechanism which may be readjusted after long use of the iirearm in order to compensate .for wear of the Darts.
With the above and other objects in view, an embodiment of the invention is shown 'in the accompanying drawings, and this` embodiment will be hereinafter more fully described with Vreference thereto, and the invention will be iinally pointed out in the claims.
In the drawing:
Fig. 1 is a side elevation, partially broken away',` of the receiver portion of a firearm embodying a safety mechanism according to the illustrated exemplary embodiment of the invention.l Y
Fig. 2 is a detail side elevation, on an enlarged scale, of the safety mechanism mounted in the receiver.
Fig. 3 is an end elevation.
Fig. 4 is a transverse vertical sectional view, taken along the line 4 4 of Fig. 2.
Fig. 5 is a perspective VKview showing the several parts of the safety mechanism in separated relation.
Similar reference characters indicate corresponding parts throughout the several iigures of the drawing.
Referring to the drawing the firearm, illustrated by way of example and embodying the safety mechanism of the invention, comprises a receiver I0, in the form of a formed sheet metal part having a lower longitudinal portion of U- shape in cross-section and an upper longitudinal portion of cylindrical form in cross-section, the gun stock Il being secured to the lower side and to the ends of the receiver and the barrel i2 being secured within the forward end of the upper cylindrical portion thereof. Within the upper portion of the receiver is engaged the reciprocating bolt I3, the operating handle I4 of which Vis engaged in a circumferential and longitudinal slot formation l5 in the receiver, the bolt being provided with a longitudinal spring-actuated firing pin I6 adapted to be cocked in the usual manner through operation of the bolt handle. The ring pin is provided in its under side with a shouldered notch l1 which is engaged in the cocked position by the nose I8 of a. sear I9, of bell-crank form pivotally mounted at its end upon apivot screw member screwed into a threaded hole 2l in the side wall of the receiver. The sear is pivotallyv connected by a pivot screw 22 to the inner end* signed to engage the extension portion 26 of the trigger rearwardly of the detent pin 29 to hold the trigger down when the safety mechanism is in itson or safe position. When in this position, the lobe of the cam comes up against the detent pin 29, which is spring drged against the periphery of the safety member to respectively engage of the trigger 23, the latter being provided with j a cross shaft 24 pivot-,ally engaged at its ends in pivot bearing holes 25 in the" side walls of the receiver. The trigger is provided with a rearward extension 26 for. cooperation with the safety mechanism, the iinger .piece 21 of the trigger extending downwardly from this extension and being provided with a cylindrical bore 28 in which is engaged a detent pin 29, normally pressed outwardly by means of a spring 30.within the bore beneaththepin.L Y
The parts of the fire control mechanism thus far described include the receiven. the sear, the trigger, and the connection and mounting Ameans for securing these parts in assembled relation. 'Ihe added tolerances of these several parts and their mounting and connection means mayv produce considerable variation in the pointofc'orrelation between the trigger and the safety mechanism cooperating therewith, and the safety mechanism according to the invention has for its purpose the compensating by adjustment for such` variation.
In one side wall of the receiver, the rightfh'and wall, as shown in Figs. 3 and 4, there is provided a cylindrical bearing aperture 3|,vhaving its axis along a transverse line inspaced relation substantially directly above the detent pin 29 of the trigger, and in the opposed side wallthere is provided a cylindrical threaded aperture 32, the axis of which is forwardly offset from Ythe axis of the bearing aperture 3|. The safety 'mechanism, which is mounted in relationto-these apertures, comprises a safety cam member 33 adapted to be positionedr substantially inY the central vertical plane of., thel receiver (in cor-rela.- tion with the detent pin of thetriggen-being provided at one side with ahub'including la cylindrical spacer portion '34, a bearing` portion of reduced diameter for engagement lir'ilthe aperture 3l, and a lever mounting neck portion 36 of further reduced diameter for receiving the actuating lever 31, Vthe neck portion being provided with diametrically vdisposed slots-38 engaged by lugs 33 in the aperture 40 of, the'plever to rigidly connect the lever to the safetycam member. The safety cam member isprovided with an axial bore 4|, in its outer portion. i
A retaining shaft member 43 is engaged "and projected through the bore ofthe cam, member, being provided at its outerend witlna head1-44',
having screw threads 42 for clamping engagement withV` the lever 31, and
4adjacent the head with a screw portiorfi45'foren--` thenotches 50 and 5|;therein to hold'the safety in the on 'or off positions.
Suiiicient clearance is provided in the engagemen-t of the necked hub of the safety member with the bearing aperture 3l, and of the shaft member 43 with the bearing aperture 41 of the eccentricbushing 46, to permit slight necessary angular movement of the safety member and its shaft. Upon assembly of the parts the eccentric bushing is positioned so that the bearing aperture 41 is along the median horizontal diameter of the eccentric member substantially as shown in Fig. 2, and thereupon throughturning, the eccentric member the position of the safety cam may be adjusted upwardly or downwardlythrough any part of to the exact point whereitis in proper fitting correlation with thel 'trigger. When this relation is found the eccentric bushing it staked, as at 52, to maintain the adjusted position of the safety member. Should the parts become worn after extensive use the safety meinber may be reset simply by breaking the staking point between the eccentric bushing and th receiver Ito permit of readjustment. l
The form of the invention illustratedin the drawing and described herein is typical and illus-v trative only, and it is evident that the invention is capable of embodiments in other forms, all falling within the scope of the appended claims, which are to be broadly construed. Y
What is claimed is: l l. In a firearm comprising a Yreceiver containing a firing mechanism havinga sear operating trigger, safety means for blocking andireleasing the action of said trigger comprising a safety cam member having rotatable bearing support in said receiver at one side, and an eccentric vbushing adjustably engaged in said receiver and constitutif ing a bearing support vfor, said safety member at the other side, relative rotary adjustment of said eccentric bushing adapted to move saidjsafety member to establish its proper Ycorrelationywith said trigger. f Y 2. In a firearm comprising a receivercontaining a ring mechanism having asear operating trigger, safety means for blocking and releasing the action of the trigger comprising a safetybam member having rotatable bearing supportin said receiver at one side, a retaining screw-shaft engaged through said cam member having a bearing end projecting into relation with the receiver at the other-side, and an eccentric bushing Yad-,-` justably engaged in said receiverhaving anY eccentric bearing constituting a bearing support for said bearing end of said shaft, relative Arotaryjacl'- justment of saideccentric ,bushingV being adapted to move said safety member to establish itsfproper correlation withrsaid trigger. I j] -e 3. In a firearm comprisingY areceiver containing a firing mechanism having a Aserar operating trigger, safety means for blocking and Yreleasing the actionV of thetrigger-comprising a safet'yfcam member having rotatable bearing support in said receiver at one side, a retainingscrewlshaft erigaged through said Acam member havinga bearing end projecting into relation with the Kreceiver at the other side, and an "eccentric -bushingadjustably engaged in said receiver having an eccentric bearing constituting a bearing support for said bearing end of said shaft, relative rotary adjustment of said eccentric bushing being adapted to move said safety member to establish its proper correlation with said trigger, the bearing engagement of said safety cam member and shaft in said receiver and bushing having sufficient clearance to permit of necessary angular movement during adjustment.
4. In a firearm, the combination comprising a receiver; a trigger mechanism mounted in said receiver; a safety mechanism cooperating with said trigger mechanism and comprising a rotatabie shaft member; and means for` adjusting said safety mechanism with respect to said trigger mechanism to compensate for variations in .the sizes thereof comprising a circular bushing threaded into said receiver and provided With an eccentrically positioned opening forming a bearing for said shaft member.
CRAWFORD C. LOOMIS.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US495164A US2387669A (en) | 1943-07-17 | 1943-07-17 | Firearm |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US495164A US2387669A (en) | 1943-07-17 | 1943-07-17 | Firearm |
Publications (1)
Publication Number | Publication Date |
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US2387669A true US2387669A (en) | 1945-10-23 |
Family
ID=23967522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US495164A Expired - Lifetime US2387669A (en) | 1943-07-17 | 1943-07-17 | Firearm |
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Country | Link |
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US (1) | US2387669A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2453683A (en) * | 1946-02-13 | 1948-11-09 | Alexander W Caldow | Safety for firearms |
US2711043A (en) * | 1952-11-17 | 1955-06-21 | Jr Gordon C Bent | Safety actuator for firearms |
US2863247A (en) * | 1955-08-31 | 1958-12-09 | Mossberg & Sons O F | Slide-action firearm with hammer releasable action lock |
US3005279A (en) * | 1958-11-20 | 1961-10-24 | Savage Arms Corp | Bolt action rifle with gas deflecting means |
US3577668A (en) * | 1969-07-22 | 1971-05-04 | Sturm Ruger & Co | Trigger and safety assembly for firearms |
US5904132A (en) * | 1996-10-10 | 1999-05-18 | The A B Biller Company | Spear fishing gun |
US6851213B1 (en) * | 2001-02-14 | 2005-02-08 | Gerald J. Doiron | Trigger lock |
US20050188582A1 (en) * | 2001-02-14 | 2005-09-01 | Doiron Gerald J. | Trigger lock |
US20150027020A1 (en) * | 2013-07-26 | 2015-01-29 | Sig Sauer, Inc. | Firearm safety assembly including a lever detent spring |
US20150198401A1 (en) * | 2014-01-12 | 2015-07-16 | Jennings Gentry LLC | Rotational safety device for firearm |
-
1943
- 1943-07-17 US US495164A patent/US2387669A/en not_active Expired - Lifetime
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2453683A (en) * | 1946-02-13 | 1948-11-09 | Alexander W Caldow | Safety for firearms |
US2711043A (en) * | 1952-11-17 | 1955-06-21 | Jr Gordon C Bent | Safety actuator for firearms |
US2863247A (en) * | 1955-08-31 | 1958-12-09 | Mossberg & Sons O F | Slide-action firearm with hammer releasable action lock |
US3005279A (en) * | 1958-11-20 | 1961-10-24 | Savage Arms Corp | Bolt action rifle with gas deflecting means |
US3577668A (en) * | 1969-07-22 | 1971-05-04 | Sturm Ruger & Co | Trigger and safety assembly for firearms |
US5904132A (en) * | 1996-10-10 | 1999-05-18 | The A B Biller Company | Spear fishing gun |
US6851213B1 (en) * | 2001-02-14 | 2005-02-08 | Gerald J. Doiron | Trigger lock |
US20050188582A1 (en) * | 2001-02-14 | 2005-09-01 | Doiron Gerald J. | Trigger lock |
US20150027020A1 (en) * | 2013-07-26 | 2015-01-29 | Sig Sauer, Inc. | Firearm safety assembly including a lever detent spring |
US9448023B2 (en) * | 2013-07-26 | 2016-09-20 | Sig Sauer, Inc. | Firearm safety assembly including a lever detent spring |
US20150198401A1 (en) * | 2014-01-12 | 2015-07-16 | Jennings Gentry LLC | Rotational safety device for firearm |
US9377260B2 (en) * | 2014-01-12 | 2016-06-28 | S2 Llc | Rotational safety device for firearm |
US9777978B2 (en) | 2014-01-12 | 2017-10-03 | S2 Llc | Rotational safety device for firearm |
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