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AssigneeThe Cincinnati Mine Machinery Company
InventorLester J. Sterwerf, Jr.
Estimating the term…
An endless chain in which there is one row of a plurality of H-shaped link elements across the width of the chain and an adjacent row of similar elements, the legs of the Hs of adjacent rows being interdigitated and provided with aligned openings which receive a connecting pin. This arrangement is continued along the length of the chain to whatever extent is desired. Bit carrying lugs are mounted on the H-shaped link elements so as to establish any bit pattern desired. The H-shaped link elements may be provided with bit carrying lugs that are skewed with respect to the direction of chain travel so as to make the chain more efficient. Such link elements may also be provided with load bearing lugs at their sides so as to give increased support for the chain. The arrangement of link elements is such that, in order to shorten the length of the chain to accommodate for slack occasioned by wear, a pair of adjacent rows of H-shaped link elements may be removed and replaced by either appropriately off-set H-shaped link elements and spacers, H-shaped link elements make possible the provision of an unusually sturdy chain requiring only a minimum number of major chain parts so that the mine owner or operator need stock only a relatively small number of parts, both as to type and as to overall quantity.
In a continuous chain for a mining machine or the like comprising a plurality of link elements arranged in rows extending across the width of the chain, at least some of said link elements constituting bit carrying link elements, the ends of said link elements having perforations therein for receiving a connecting pin, adjacent rows of said link elements being interdigitated so that the perforations in said interdigitated link elements are in alignment, a connecting pin received in said aligned perforations, and means to retain said connecting pin in said aligned perforations;
A chain link element which is H-shaped when viewed in plan, said H-shaped link element being for use in making up chains for mining machines and the like, said link elements comprising a central bridge portion, a first pair of spaced parallel legs extending from one sie of said bridge portion perpendicular thereto, a second pair of spaced parallel legs extending from the other side of said bridge portion perpendicular thereto, all of said legs of said first and second pairs being parallel to the direction of intended chain movement, each of said first and second pairs of legs being provided with aligned pintle receiving perforations, said central bridge portion not extending above said legs when said link element is viewed in side elevation.
Anti-backlash means for trim and cutting chains used in the mining and construction industries, each chain being of the type comprising a plurality of H-shaped links each of which has a central bridge portion with forward and rearward edges, each central bridge portion having a pair of spaced parallel legs directed forwardly from its forward edge and a pair of spaced parallel legs directed rearwardly from its rearward edge, said forward and rearward legs having transverse perforations therein, said chain being arranged in lateral rows each of which is at least one link wide, said links being arranged one behind the other in at least one longitudinal column and with the said forward and rearward legs of successive rows being interdigitated and the said transverse perforations of the interdigitated legs being coaxial, connecting pins extending through said coaxial perforations to form an endless chain, each of said forward and rearward legs being provided with an abutment surface, each of said forward and rearward edges being provided with a further abutment surface between said legs thereon, the abutment surface of one of the forward legs of one central bridge portion cooperating with the said further abutmetn surface on the rearward edge of an adjacent central bridge portion in said column, and the abutment surface of one of the rearward legs of said one central bridge portion cooperating with the said further abutment surface on the forward edge of an adjacent central bridge portion in said column, whereby to limit and substantially minimize backlash and chain sag.
A chain link element which is H-shaped when viewed in plan, said H-shaped link element being for use in making up chains for mining machines and the like, said link element comprising a central bridge portion, a first pair of spaced parallel legs extending from one side of said bridge portion perpendicular thereto, a second pair of spaced parallel legs extending from the other side of said bridge portion perpendicular thereto, all of said legs of said first and second pairs being parallel to the direction of intended chain movement, each of said first and second pairs of legs being provided with aligned pintle receiving perforations, said link element being provided with a bit carrying lug having a perforation therein to receive a bit, said lug being fixed on said central bridge portion.
A chain link element which is H-shaped when viewed in plan, said H-shaped link element being for use in making up chains for mining machines and the like, said link element comprising a central bridge portion, a first pair of spaced parallel legs extending from one side of said bridge portion perpendicular thereto, a second pair of spaced parallel legs extending from the other side of said bridge portion perpendicular thereto, all of said legs of said first and said second pairs being parallel to the direction of intended chain movement, each of said first and said second pairs of legs being provided with aligned pintle receiving perforations, said central bridge portion comprising a plurality of surfaces which impart a W-shape to said H-shaped link element when viewed in side elevation.
A chain link element which is H-shaped when viewed in plan, said H-shaped link element being for use in making up chains for mining machines and the like, said link elements comprising a central bridge portion, a first pair of spaced parallel legs extending from one side of said bridge portion perpendicular thereto, a second pair of spaced parallel legs extending from the other side of said bridge portion perpendicular thereto, all of said legs of said first and second pairs being parallel to the direction of intended chain movement, each of said first and second pairs of legs being provided with aligned pintle receiving performations, the ends of said legs and the sides of said central bridge portion between said spaced parallel legs are all substantially vertical when the H-shaped link element is viewed in side elevation.
A chain link element which is H-shaped when viewed in plan, said H-shaped link element being for use in making up chains for mining machines and the like, said link element comprising a central bridge portion, a first pair of spaced parallel legs extending from one side of said bridge portion perpendicular thereto, a second pair of spaced parallel extending from the other side of said bridge portion perpendicular thereto, all of said legs of said first and said second pairs being parallel to the direction of intended chain movement, each of said first and second pairs of legs being provided with aligned pintle receiving perforations, said central bridge portion comprising a plurality of surfaces which define an area in which a bit carrying lug may be situated, said surfaces being comprised of a horizontal surface and a first sloping surface, said first sloping surface extending downwardly from one of said pair of spaced parallel legs toward said horizontal surface.
A link element for a mining machine cutting chain, said link element being provided with a central bridge portion and a first pair of spaced parallel legs extending from one side of said central bridge portion at right angles thereto, and a second pair of spaced parallel legs extending from the other side of said central bridge portion at right angles thereto, all of said legs being provided with pintle receiving perforations, the perforations on any one side of said central bridge portion being in alignment, said first and second pairs of spaced parallel legs being off-set with respect to one another by the width of a said leg whereby said link element has an off-set H-shape when viewed in plan.
A chain for mining machines and the like, said chain comprising a succession of H-shaped link elements (H-shaped when viewed in plan) located in a single column, one behind the other, each said link element being provided with a central bridge portion and a pair of spaced parallel legs extending from either side thereof at right angles thereto, all of said legs being parallel to the direction of intended chain movement, each pair of spaced parallel legs being provided with aligned pintle receiving perforations, the corresponding legs of adjacent H-shaped link elements being in linear alignment, a strap element having a first end adapted to be received between the spaced parallel legs of one pair on one link element and a second end adapted to be received between the spaced parallel legs of one pair on an adjacent link element, said first and second ends each having a pintle receiving perforation therein, and a pintle extending through the aligned pintle receiving perforations of a pair of spaced parallel legs and through the pintle receiving perforation of the strap end engaged therebetween, and bit receiving lugs mounted on selected ones of said H-shaped link elements.
Dependencies are inferred from the claim text.