adventuregerma.blogg.se - Springfield 1898 scope mount

No contact is made with the bosses' lower edge As for lockup at the posterior of the sight base the competition rely on a blind top body tension screw to put upward bearing, reverse pressure upon the back of their scope mount. Their rear sight bosses only make contact with the said sides of the body at their vertical inward edge.

They both utilize previously stated inward area of the opposing sight base bosses, as the forward fixing point of their scope mounts to the rear sight base, however they do not have the outward facing slots as my invention has on the front scope mount body sides to capture the lower edges of the sight base bosses. These products are marketed by Mitchell's Mausers, and the other by B-Square. I am aware of two other designs (actually only one as they both work on the same principal) that utilize the rear sight base of the K98 as the mounting point for their scope mounts. three inches, and fastened and locked in at three points all within the space of the host rear sight base and all exerting downward force of my scope mount base to the sight base. Such a long span between fasteners probably caused scope flexing on recoil. The McCann design also only fastens at 2 points and there is a fairly long distance between those fastening points, approx. The use of upward pressure alone to secure an item will work in the short run but for long term usage a downward force on the mount to the sight is preferable. His capture forces are all in the up direction with a single lever screw turned from the top mounting plate exerting upward pressure of this mounting plate towards the sight base undercuts. My design is an improvement over the McCann in that his use of the rear sight base slots only fixes at one point in the sight base which provides an unequal purchase of the slots. His 1936 patent utilizes the rear sight base of a 1903 Springfield rifle (Actually a 1898 Mauser in basic design) and the magazine hold catch slot on the receiver as basic points of affixing the rifle. His patent also utilizes preexisting holes and notches to fasten the mount to the rifle. "Picatinny rail systems"Īs for other related patents that use a preexisting forward sight base in their application, I could only find one, the George McCann (U.S.

F41G11/003- Mountings with a dove tail element, e.g.

F41G11/001- Means for mounting tubular or beam shaped sighting or aiming devices on firearms.

F41G11/00- Details of sighting or aiming apparatus Accessories.

F- MECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING.

Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to US42984706A priority Critical Application filed by Michael Angelo Spinelli filed Critical Michael Angelo Spinelli Priority to US11/796,974 priority patent/US7827724B1/en Publication of US20100263256A1 publication Critical patent/US20100263256A1/en Application granted granted Critical Publication of US7827724B1 publication Critical patent/US7827724B1/en Status Expired - Fee Related legal-status Critical Current Adjusted expiration legal-status Critical Links ( en Inventor Michael Angelo Spinelli Original Assignee Michael Angelo Spinelli 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 status listed.) Granted Application number US11/796,974 Other versions US7827724B1 Google Patents US20100263256A1 - No-drill rear sight scope mount base

US20100263256A1 - No-drill rear sight scope mount base