Ordnance – Mounts – Training mechanisms
Patent
1978-07-31
1980-03-18
Bentley, Stephen C.
Ordnance
Mounts
Training mechanisms
33237, 350 26, 350302, 356 7, 356254, F41G 140
Patent
active
041933346
ABSTRACT:
A gun sight positioning mechanism (22) disclosed includes a parallelogram linkage for moving a gun sight positioning shaft angularly with a trunnion shaft (32) on which a gun is supported and has a slip clutch (44) that connects the linkage to one of the shafts so that the sight can be aimed downwardly at the target area while the gun remains aimed upwardly along the projectile path. Preferably, the slip clutch connects the linkage to the gun sight positioning shaft and includes a stop (56) that allows the sight to be aimed upwardly back into alignment with the gun after viewing the impact. First and second links (46,52) of the linkage are respectively connected to the trunnion and sight positioning shafts and interconnected by a connecting link (54) whose length is adjustable to insure the proper angular movement of each shaft with the other. A mount of the slip clutch has a flanged end secured to the sight positioning shaft and a distal end on which a handle (58) is secured to provide the pivoting of the sight shaft independently of the gun. A spring washer of the clutch biases a brake member thereof against the second link which is thereby engaged with the flanged end of the mount to provide the slip clutch action.
REFERENCES:
patent: 2360850 (1944-10-01), Colby
patent: 2369806 (1945-02-01), Slonneger
patent: 2390516 (1945-12-01), Crawford
patent: 2466725 (1949-04-01), Minter
patent: 3263567 (1966-08-01), Sandahl
patent: 3309962 (1967-03-01), Lykam
patent: 3355987 (1967-12-01), Kunze
patent: 3424052 (1969-01-01), Ruf
patent: 3493296 (1970-02-01), Albert
patent: 3545837 (1970-12-01), Chapman
patent: 3782802 (1974-01-01), Hohl et al.
patent: 3868169 (1975-02-01), Pfenninger et al.
Bentley Stephen C.
Cadillac Gage Company
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