US1656669A - Thomas gore - Google Patents

Description

MCM ATTRNEY Jan. 17, 192so T. GORE,

WIRE ROPE Filed Feb. l2, 1927 INVENTR V7/vw lill Patented dan. l?, i928.

THOMAS GORE, 0F BROOKLYN', NEW YRK.

WIRE ROPE.

Application ed February 12, 1927. Serial No. 167,614.

This invention relates generally to wire ropes, particularly those that are subject to severe duty and to the action of solutions that may be absorbed during its use, an eX- ample of suoli ropes being those that are employed in drilling oil wells whether by the rotary `or beam standard systems.

The main object of this invention is to obtain increased life of service of the rope by eliminating the cause of high, low and sunken strands, to reduce the uneven surface of the rope at the point or points where said rope bisects itself in winding one layer over another under extreme stresses of load, and 'to minimize internal corrosion of said rope. l To this end the invention consists of the interposition of an elastic metallic member between the core and the outer strands.

Fig. l is a view in side elevation of a rope, with parts broken away, showing one embodiment of the invention.

Fig. 2 is a cross sectional view substantially onthe line 9.-2 of Fig. l.

Figs. 3, 4 and 5 are views similar to Fig. showing modiiied forms of the invention.

,ln the form in which the invention is disclosed in Figs. l and 2, the reference character l indicates a strand constituting a cords-aid strand preferably consisting ofround wires 2. 3 indicate outer strands, each preferably composed of twisted wires fl, laid around the core. interposed between the core and the outer strands is a metallic elastic member here taking the form of one or more itat-rolled or drawnwires 5 laid helically around the core.Member 5 is pref orably of softer material than the wires of the outer strands.

lt will be understood that, by this construction, abrasion between the core and the high tensile strength wires of the outer strands is prevented, and also that there can be no collapsing of the core such as is 'frequently the case when an alldiber core Ais employed, this collapsing resulting in sunken spots on the rope. Further, the interposed metallic member will not absorb or harbor solutions in which the rope may become immersed. Such solutions frequently contain sulphuric acid or other deleterious matter' and if a fiber member should be used between the core and the outer strands such iiber member would absorb and then give off such solutions and set up a serious corrosive action.

The metallic elastic member really has the action of a spring and will readily contract or expand in harmony with the impact or drilling operation in which the rope is used, and will, as a matter of fact, assist such action because a pulsation is really set up in the rope by reason of its presence and this will facilitate theI drilling operation. This metallic elastic member may consist of a single layer of flat-rolled wire as shown in Fig. 2, or, as shown in Fig. 3, it may consist of severalsuch layers 5 and 5a, and it will be understood that each layer may consist of one or more wires laid side by side.

The lay of the rope may either bey Lang lay or regular lay as may be desired.

In Fig. fl is shown a modiiication in which the core has a iibrous center o surrounded by small strands T and in Fig. 5 the core is composed of afibrous center 6 surrounded by a single layer of wires 8. ln all forms of the invention the core is therefore at least provided with an outer covering ofA wires and as shown in Figs. l to 3, the core may be of wires throughout@ l claim:

l. A rope comprising: a strand, having a metallic covering, constituting a core, a plurality of outer strands, each composed of twisted wires, laid around the core, and ilat wire, constituting an elastic member and softer than the wires of the outer strands, interposed between the outer strands and the core and laid helically around'the latter.

2. A' rope comprising: a strand, composed of round wires, constituting a core, a ijilurality of outer strands, each composed of twisted wires, laid around the core, and flat wire, constituting an elastic member and softer than the wires of the outer strands, interposed between the outer strands and the core and laid helically around the latter.

Signed at New York, in the borough of Manhattan, county of New York, and State of New York, this 10th day of February,

THMAS GORE.

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