Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS3626622 A
Publication typeGrant
Publication dateDec 14, 1971
Filing dateSep 10, 1969
Priority dateJul 16, 1969
Publication numberUS 3626622 A, US 3626622A, US-A-3626622, US3626622 A, US3626622A
InventorsUberti Aldo
Original AssigneeUberti Aldo
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Safety device for revolvers
US 3626622 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Dec. 1, 1973 A. UBERTI 3,626,622

SAFETY DEVICE FOR REVOLVERS Filed Sept. 10, 1969 magi E) 3,626,622 SAFETY DEVICE FOR REVOLVERS Aldo Uberti, Piazza Garibaldi 3, Gardone Val Trompia, Italy Filed Sept. 10, 1969, Ser. No. 856,548 Claims priority, application Italy, July 16, 1969, 2 9

89/ Int. Cl. F41c 17/00, 17/08 US. Cl. 4266 3 Claims ABSTRACT OF THE DISCLOSURE The present invention relates to safety devices for firearms and, more particularly, to safety devices for revolvers.

In the field of revolvers, safety devices are Well known for the purpose of preventing accidental discharges due to the dropping of the firearm or due to the carelessness of the operator while handling the revolver or the hammer thereof. However, the known safety devices are often unsatisfactory and not at all fool proof and do not comply with the stringent safety regulations of many states.

It is therefore the main object of the present invention to provide for a revolver on the hammer of which there is mounted a pushing element controlled by the trigger. The arresting tooth of the trigger is caused to engage a notch suitably provided in the body of the hammer, so as to obtain the safety position of the firearm. This engagement in the notch in the body of the hammer serves to determine the angular displacement of a balance lever pivotable in the back face of the yoke of the revolver, so as to interpose itself between the yoke and the hammer and to limit the degree of displacement which will then result in the prevention of the operation of the firing pin upon the projectile.

Briefly stated, the present invention, therefore, provides in a revolver a safety device which comprises means to control and limit the displacement of the hammer, so as to preclude fully the even inadvertent firing of a projectile, said safety device consisting essentially of a lever element which is interposable between the hammer and the yoke of the revolver.

Another object of the present invention is to provide for a revolver wherein the disengagement of the safety device requires a willful and determined action upon the hammer to bring the latter in the cocked or armed position or in an intermediate neutral position between the fully safe position and the firing position.

These and other advantages of the invention will be apparent from the following detailed description thereof and from the accompanying drawings, in which:

FIG. 1 is a perspective view of the revolver of the invention;

FIG. 2 is a sectional view of the safety device in the operational position;

FIG. 3 is a sectional view taken along the lines A-A of FIG. 2;

FIG. 4 is a sectional view taken along the lines B-B of FIG. 3;

nited States Patent FIG. 5 shows the detailed sectional view of FIG.-3, but in the safety position; and

FIG. 6 is a sectional view taken along the lines CC of FIG. 5.

Referring now to the drawings, hammer 1 is actuated by spring 2 and cooperates mechanically with trigger 3, the arresting tooth 4 of which acts upon upper notch 5, intermediate notch 6 and lower finger 7, elements 5, 6 and 7 being provided in the hammer and constituting the safety position, the neutral position and, respectively, the armed position of the hammer.

The present invention provides for a longitudinal seat 9 in the body of the hammer, within which seat is positioned a piston-pushing element 10 which is free to effect axial displacements when actuated by head spring 22. These displacements are defined by a transverse pin 11 acting in correspondence with an indentation .12. The pushing element 10 protrudes in its lower part in juxtaposition with the upper notch 5 of the hammer and, in the vicinity of its upper part is provided with an inclined planar surface 20 in juxtaposition with the laterally carved indentation 21 of the hammer. The inclined surface 20 serves the purpose of acting upon the lower finger 14 of the balance lever 13. Lever 13 is pi-votable in turn on 15 within a seat or notch 16 suitably provided on the back face of the yoke 17 of the revolver. The balance lever 13 is actuated, underneath, by a spring 18 positioned within the body of the yoke, so as to counteract the action of the inclined surface 20 of the pushing element 10 and to act, therefore, on the finger 14 of the lever itself. This lever terminates, upperly, in an appendix 19 which is preshaped and is capable of interposing, as a finger, between the hammer and the yoke, due to the angular displacements of the lever 13, which displacements are in a plane substantially parallel and adjacent to the back face of the yoke, against which the hammer acts.

To set the revolver in the safety position, it is suflicient to effect an angular displacement of the hammer 1 sufiicient to seat the blocking tooth 4 of the trigger 3 within the upper notch 5 of the hammer. Due to the reaction of spring 2 of the trigger, this will cause an axial displacement upwardly of the pushing element 10 provided in the hammer. To this displacement of element .10 corresponds the action of the inclined surface 20 thereof upon the finger 14 of the balance lever 13, see FIG. 3, with the resultant angular displacement of the lever 13 so as to bring the upper appendix 19 between the front surface of the hammer 1 and the back surface of the yoke 17, see FIG. 4.

Because of the above, the hammer is prevented from moving fully toward the yoke, so that the projectile cannot be acted upon as a result of the incomplete movement of the hammer and the revolver cannot be discharged.

The disengagement of the safety means, conversely, requires the willful and determined intervention of the operator, so as to move the hammer into the proper armed or cocked position. This will occur when the pushing element 10, freed from the action of tooth 4 of the trigger and actuated by the head spring 22 returns downwardly and allows balance lever 13 (see FIG. 5), actuated by back spring 18, to be in the position where the upper appendix 19 is blocked in the notch 16 of the lever (see figure 6), so as not to interfere with the movement of the hammer.

What I claim as new and desire to secure by Letters Patent of the United States is:

1. Safety device for revolvers having a yoke, a hammer with an upper notch and a trigger with a blocking tooth, said upper notch engaging said blocking tooth, which comprises:

(a) a balance lever pivotably connected to said yoke 3. The safety device of claim 1, wherein said balance and having a lower finger and an upper appendix lever is pivoted on the back face of said yoke so as to be thereon, said lever being capable of efiecting angulaterally displaced with respect to the hammer and to lar displacements in a plane parallel to the back face effect angular displacements transversely to the displaceof said yoke; 5 ments of said hammer.

(b) a pushing element axially movable and cooperating with said blocking tooth when said tooth engages References Cited said upper notch Of said hammer; and UNITED STATES PATENTS (c) an inclined upper surface positioned in proximity of the upper part of said pushing element and 00- 10 609233 8/1898 Houghton operating with the lower finger of said balance lever 818721 4/1906 Wesson 42 66 to define the angular displacements of said lever 961189 6/1910 Wesson 42 66 which is positionable between said hammer and the 1122635 12/1914 Pomeroy 42-66 back face of said yoke.

2. The safety device of claim 1, wherein said balance BENJAMIN BORCHELT Primary Examiner lever is actuated by a return spring acting on the lower C. T. JORDAN, Assistant Examiner finger of said lever in counter-action to the inclined upper surface of said pushing element.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4067132 *Mar 26, 1976Jan 10, 1978Smith Joseph ESafety device for preventing the unauthorized firing of a weapon
US4454673 *May 12, 1982Jun 19, 1984Heckler & Koch GmbhAutomatic safety device for handguns
US4461110 *Apr 1, 1982Jul 24, 1984Daniel T. InderbitzenSafety latch arrangement for use in a firearm
US5560132 *Apr 13, 1995Oct 1, 1996Uberti Aldo & C. S.R.L.Automatic safety device for a revolver on the hammer
DE2938600A1 *Sep 24, 1979Apr 2, 1981Erma Werke Waffen & MaschfFirearm firing pin safety catch - has block to prevent pin sliding forward until moved by trigger action
U.S. Classification42/66
International ClassificationF41A17/74, F41A17/00
Cooperative ClassificationF41A17/74
European ClassificationF41A17/74