Chain coupling device and method of manufacture thereof

The method of providing a chain coupling link device of the type comprising two sub-assembly units of substantially U-shaped form including bow-shaped intermediate portions extending into generally parallel leg portions which are apertured in transversely algined relation to receive therethrough a mutually connecting hinge pin to provide a complete coupling link, and wherein each of said sub-assembly units comprises a laminate of two or more strap-like members, said improved method comprising:

• A. blanking pluralities of said members from flat sheet or plate stock material into generally U-shaped planforms each comprising a flat bow-shaped portion subtended by two generally parallel leg portions, the terminal ends of said leg portions being apertured;
• B. twisting the terminal end portions of the legs of said members right-angularly;
• C. superposing pluralities of said members with the flat bow-shaped portions thereof disposed in laminarly stacked relation;
• structurally integrating the bow-shaped portions of said relatively laminated members to provide a sub-assembly unit;
• and
• D. slide-fitting a hinge pin laterally through mutually aligned apertured portions of the legs of a pair of said sub-assembly units to complete said coupling link device.

An improved chain coupling link device comprising:

• a pair of sub-assembly units each being of generally U-shaped planform configurations hingedly interconnected by means of a hinge pin, wherein each of said sub-assembly units comprises a laminate of two or more strap-like members;
• said members each being blanked from flat sheet or plate stock material into generally U-shaped planforms to include a flat intermediate bow-shaped portion subtended by at least generally parallel leg portions, the terminal ends of said leg portions being apertured and twisted relative to said intermediate bowed portion and mounting therethrough said hinge pin;
• said intermediate bowed portions being of their original blanked out planar configurations;
• pluralities of said members of each of said units being nested together in laminar relation;
• and means structurally integrating the relatively laminated intermediate bow-shaped portions of said members.

The method of providing a chain coupling link device of the type comprising two sub-assembly units of substantially U-shaped form including bow-shaped intermediate portions extending into generally parallel leg portions which are apertured in transversely aligned relation to receive therethrough a mutually connecting hinge pin to provide a complete coupling link, and wherein each of said sub-assembly units comprises a laminate of two or more strap-like members, said improved method comprising:

• A. blanking pluralities of said members from flat sheet or plate stock material into generally U-shaped planforms each comprising a flat bow-shaped portion subtended by two generally parallel leg portions, the terminal ends of said leg portions being apertured;
• B. twisting the terminal end portions of the legs of said members;
• C. superposing pluralities of said members with the flat bow-shaped portions thereof disposed in laminarly stacked relation;
• structurally integrating the bow-shaped portions of said relatively laminated members to provide a sub-assembly unit;
• and
• D. slide-fitting a hinge pin laterally through mutually aligned apertured portions of the legs of a pair of said sub-assembly units to complete said coupling link device.