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Aug. 27, 1946. w. 'K. ROBBINS 2,406,712 CHAIN LINK Filed Feb. 5, 1944 TTUHJVEY Patented Aug.‘ 21, 1946 ‘ . UNITED 2,406,712 * .. , STATES ~ PATENT OFFICE -. - - 2,406,712 CHAIN LINK William K. Robbins, Chicago, 111. Application February 5, 1944, Serial No. 521,189 5 Claims. (01. 59-84) 1 The invention relates to improvements in chain links and has for its primary object the pro vision of a chain link made of separable mem bers which may be readily assembled when de sired, either with similar links or with integral links to constitute a chain, which is capable of economical production and highly e?icient in this way a chain link is provided which may be readily formed by stamping or forging opera tions, and may therefore be economically pro duced. "It will also be noted that the rivets l1 and the interlocking projections l3 are located on opposite sides of the lines of strain on each link limb which are approximately on lines 20-20 of Fig. 1, thereby adequately resisting said strains with a minimum of material. Other objects will appear hereinafter. In the modi?cations illustrated in Figs. 4, 5, The invention consists of the combinations 10 and 6 interlocking ribs 18 and corresponding and arrangements of parts hereinafter described grooves [9 are formed in the link parts to con and claimed. stitute' further interlocking elements between use. . The invention will be best understood by ref erence to the accompanying drawing forming a part of this speci?cation and/in which Fig. 1 is a face view of a chain link embody ing the invention and shown in assembled con .dition; Fig. 2, an edge view thereof; , ' them. Otherwise the constructions are substan 15 tially the same. Such a construction may be readily made by ordinary forging operations and will afford a very secure interlocking engage ment between the link members. In this in stance, a single rivet I1 is employed for secur the link members together. ‘ Fig. 3, a view of theblank from which the 20 ingWhile I have illustrated and described the pre- . separable link members are formed; ferred forms of construction for carrying the Fig. 4, a view similar to Fig. 1 but showing a invention into eifect, these are capable of vari slightly modi?ed form of construction; ation and modification without departing from Fig. 5, an edge view of the link shown in Fig. 25 the spirit of the invention. I therefore do not 4; and . Fig. 6, a section taken substantially on line 6-4; of Fig. 4. wish to- be limited to the precise details dis closed, but desire to avail myself of such vari ations and modi?cations as fall within the scope The embodiment of the invention illustrated of the appended claims. in Figs. 1, 2 and 3 comprises two substantially . ° U-shaped separable link members, each consist 30 I1. claim: A chain link comprising two substantially ing of a blank composed of two similar parts l0 _ U-shaped separable link members, each consist folded into juxtaposition to constitute a com ing of a blank composed of twosimilar parts plete link half or member having limbs of twice foldable into juxtaposition and provided with the thickness of material as shown. The said interlocking elements; and means for securing 35 blank, when formed, is provided with a central said members against separation. opening H, arranged as indicated along the 2. The construction ‘speci?ed in claim 1 in central line of fold, with notches H! in each which said interlocking elements consist of a outer edge forming adjacent projections l3. The head formed at the end of one limb of each link blank is also provided with suitable rivet holes member and a socket formed at the end and 14 and the arrangement is such that when the 40 between the members of the other limb to re blank is folded centrally upon itself, the parts ceive the head on the other link member. ID are brought into juxtaposition with the cen- . 3. The construction speci?ed in claim 1 in tral portions 15 separated slightly to form a re which said interlocking elements consist of a ceiving socket l6 adapted and arranged to re head formed at the end of one limb of each link ceive the associated projections l3 on the end of 45 ‘member and a socket formed at the end and the other limb of the other link member, as will between the members of the other limb to re be readily understood. ceive the head on the other link member, there The notches l2, the projections l3 and rivet ' being an inwardly spaced opening formed in each holes M are thus also brought into registration blank at the fold and a correspondingly posi ' with each other forming a composite head l3’, 50 tioned notch in the outer edge of each/of said adapted and arranged to ?t into socket I6 and parts forming a projection ?tting into said open engage opening ll of the other link member to ing in the other link member when they are form interlocking elements between the link assembled. ' members and providing transverse rivet holes 4. The construction speci?ed in claim 1 in for the reception ‘of the securing rivets II. In 55 3 2,406,712 which the securing means and interlocking ele blank at the fold and a correspondingly posi ments are located on opposite sides of the lines tioned notch in the outer edge of each of said of strain. parts forming a projection ?tting into said open 5. The construction speci?ed in claim 1 in ing in the other link member when they are which said interlocking elements consist of a 5 assembled; and securing means are provided for head formed at the end of one limb of each link each limb of said assembled members located on member and a socket formed at the end and opposite sides of the lines of strain from said between the members of the other limb to re interlocking openings and projections. ceive the head on the other link member, there being an inwardly spaced opening formed in each 10 WILLIAM K. ROBBINS.