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Publication numberUS1399646 A
Publication typeGrant
Publication dateDec 6, 1921
Filing dateMay 25, 1920
Priority dateMay 25, 1920
Publication numberUS 1399646 A, US 1399646A, US-A-1399646, US1399646 A, US1399646A
InventorsJoseph Oppman
Original AssigneeJoseph Oppman
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Interlocking link
US 1399646 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)




Patented Deco UNITED JDSEPH orrrrnn, F PITTSBURGH, PESFLV nrrnnnocrn'e -11 To all whom it may concern:

Be it known that l, Josnrnr UrrMAN, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in an ][nterlocking Link, or which the following is a specifieatlon.


mtscribed and then specifically pointed out in rectan ill) the claims, and in the drawings illustrative of the preferred embodiment of the invention. a

In the accompanying drawing:

Figure 1 represents a perspective view of a link blank constructed in accordance with this invention with its opposed hook-like ends open.

Fig. 2 is an edge view of the link blank with its hooks open.

Fig. 3 is a front or face view of the'link with the hooks closed, and,

Fig. d is a perspective view of two ends of a chain connected by this improved link.

in the embodiment illustrated a link 1 is shown of elliptical configuration in general outline and is composed oi'a substantially gular central body portion 2 with hook-like members 3 extended longitudinally from opposite sides of said central portion at diagonally opposite corners thereof and ot a substantially rigid strain resisting material to adapt it for heavy work. The free ends of the members 3 are exactly alike and each has a recess 4t in its outer edge at its free end to receive a longitudinally extending lug 5 carried by the base of the opposed hook at its outer edge. The formation of the lug 5 at the base of each hook provides a recess 6 between it and the opposed edge of the body 2 to receive the terminal of the other hook. Each of these hook ends is also provided on its inner edge at a point diagonally opposite the recess 4 with a laterally Specification of Letters Patent.

1 edge of the central Patented Dee. t lwfili 1920. aerial-n0. aaaoei.

opening recess 7 to receive a correspondingly shaped lug 8 projecting outwardl from one portion 2. hen these hook ends are in closed position as shown in Flg. 3 the cooperating lugs and recesses are mterlockingly engaged as shown clearly in said figure and after being pressed into position cannot become accldentally detached owing to the interlocking connection of the lugs and recesses.

ln construotin or making up a chain from such link 10 anks or connecting other links the free ends of the hooks 3 are bent outwardly or laterally as shown in Fig. 2 and to a degree sufficient to adapt them to enter and engage links to be connected as shown in Fig. a. The free'ends of the members 3 are then bent inward to cause the lugs and recesses thereof to engage the cooperating elements oi the central portion 2 when they will lie fiat with said central portion as is shown clearly links. may be constructed of any desired matlli in Figs. 3 and r. 'lhese terial being preferably made from hard iron or steel and when a plurality are connected to form an anti-skid chain the alternate links will be disposed edgewise adapting them to operate efiiciently as anti-skidding devices.

The preferred embodiment of the invention is disclosed in the drawings and set forth in the specification, but it will be understood that any modifications withinthe scope of the claims may be made in the construction without departing from the principle ot the invention or sacrificing any of its advantages.-

What l claim is:

1 A link blank comprising a body portion of substantially rigid strain resisting material and having oppositely extending hooklike members, having diagonally opposite recesses in its opposed edges and lugs carried by the base of the other hook to enter and interlockingly engage said recesses for securing the hooks in operative position, said base having a recess between said lugs to receive the correspondingly sha ed hook bill whereby the parts are secure y locked in closed position and held against strains exerted longitudinally or edgewise.

2. A link blank comprising a substantially rectangular bod portlon having oppositely extending hook" ike members at diagonally thefree end of each hook g i meeaeee opposite corners thereof, the free end of each spaced inwardly from its terminal, and a hook having a recess in its outer edge openlug carried by said central portion to enter ing from its terminal and a longitudinally and interlockingly engage said recess. 10 extending lug at the base of the other hook in testimony whereof, I aflix my signato. enter said recess and be interlcckingly ture hereto.

engaged therewith, said recessed hook also having a recess in its inner edge at a point JOSEPH, OPPMAN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2612670 *Oct 17, 1949Oct 7, 1952St Pierre HenryTire chain tightener
US4122666 *Jul 19, 1976Oct 31, 1978Jessop Quenton WChain
US4606188 *Aug 14, 1984Aug 19, 1986Kockums Industri AbElongated connecting chain link
US7815680 *Jan 13, 2006Oct 19, 2010Nabil L. MuhannaFlexible vertebral implant
US20070168032 *Jan 13, 2006Jul 19, 2007Nabil L. Muhanna, M.D.Flexible vertebral implant
U.S. Classification59/90, 267/74, 294/82.17, 403/339, 59/85
International ClassificationB60C27/00, B60C27/08, F16G15/02, F16G15/00
Cooperative ClassificationB60C27/08, F16G15/02
European ClassificationF16G15/02, B60C27/08