Patent Publication Number: US-2021167585-A1

Title: Unitary fastener and cable guidance devices for helicopter block pulleys and methods of assembly and use

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     The present application claims priority to, incorporates herein by reference, and is a non-provisional of, U.S. Provisional Patent Application No. 62/942,175 filed Dec. 1, 2019 by inventors Edward Youngerman, Anthony Pickart, Servando Tones, and Andrew Finn, and entitled Traveler Ground Components, Assemblies, Systems, and Methods of Use (“the &#39;175 application”). 
    
    
     FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
     None. 
     TECHNICAL FIELD 
     The present disclosure relates generally to pulley block assemblies for pulling cable, such as power lines, onto towers. More particularly, the present disclosure relates to cable guidance devices for pulley block assemblies. 
     BACKGROUND 
     The following background information may present examples of specific aspects known in the art (e.g., without limitation, approaches, facts, or common wisdom) that, while expected to be helpful to further educate the reader, are not to be construed as limiting the present invention or any of its embodiments. 
     It is known in the art that stringing power conductor cables within their transmission and distribution networks is performed with transmission networks, which carry very high voltage power cables over long distances from power plants to substations, and distribution networks which carry lower voltage power cables to the power consumer. Typically, such power conductor cables are strung along overhead transmission and distribution lines at the line structures or blocks. Often, a pilot line is strung through the blocks, either manually or by a helicopter. Then, the pilot line is exchanged by a single or bundled conductor running on the blocks. Finally, the conductor is sagged and then transferred from the blocks to clamps. 
     In many instances, the stringing of power conductor cables requires utilization of a stringing block having a sheave wheel. Such transmission stringing sheaves generally use wheels having a diameter ranging from about twelve inches to forty-two inches. Often, the sheaves use aluminum wheels in an aluminum frame. The wheel slowly feeds the line along the tops of the towers, often through use of a pilot line that guides the end of the conductor cable. 
     Other designs have involved helicopter block pulley systems utilizing multiple pulleys or sheaves for stringing conductor cables across transmission towers. However, a need remains for improvements to known helicopter block pulley systems, because they are complex, involve numerous moving parts, and the cable sometimes rides out or over the side of the pulleys or sheaves of the system. 
     SUMMARY 
     The present invention elegantly overcomes various drawbacks and limitations of past systems and provides numerous additional benefits as will be apparent to persons of skill in the art. For example, provided in various example embodiments is a simplified and improved unitary fastener and cable guidance device (“device”) for a pulley block assembly, such as a unitary fastener and cable guidance device formed from a single piece of material, the device comprising: a pair of discs, each disc comprising an inner side, an outer side, a disc rim, and a disc hub forming an annular depression between the pair of discs, the annular depression defining a minimum outer diameter about an axis; and a cantilevered axle comprising an outer axle diameter, an outer end, and an opposing inner end integral to the outer side of one of the discs, the cantilevered axle having a threaded axle borehole formed therein about the axis; the outer axle diameter being equal to or greater than the minimum outer diameter. 
     In various example embodiments the disc rim comprises a curved peripheral edge. In various example embodiments the outer side of one of the discs forms a cavity. In various example embodiments the cavity comprises an axially extending wall comprising a hexagonal shape. In various example embodiments the annular depression and the inner side of the discs form a smooth junction. In various example embodiments the cantilevered axle of the device is configured to attach to an arm portion of a pulley block assembly comprising a sheave wheel so that the device will be aligned with the sheave wheel to rotatably direct a cable in a circumferential direction to the sheave wheel. 
     Also provided in various example embodiments is a pulley block assembly comprising: the unitary fastener and cable guidance device as described herein, rotatably connected to an arm assembly that is rotatably connected to a frame to which a sheave wheel having a circumferential groove is rotatably connected, the unitary fastener and cable guidance device operable to rotatably direct a cable in a circumferential direction toward, and in alignment with, the circumferential groove in the sheave wheel. 
     In various example embodiments the unitary fastener and cable guidance device is rotatably connected to the arm assembly with a tamper-resistant flower nut having a tapered outer surface and a curvilinear inner wall surface having a shape configured to engage a correspondingly-shaped tool, the tamper-resistant flower nut rotationally engaged with a threaded fastener fastened to the threaded axle borehole. 
     In various example embodiments the arm assembly rotatably is connected to the frame with a tamper-resistant flower nut having a tapered outer surface and a curvilinear inner wall surface having a shape configured to engage a correspondingly-shaped tool, the tamper-resistant flower nut rotationally engaged with a threaded fastener fastened to a hub attached to the frame. In various example embodiments the hub is coaxial with an axle about which the sheave wheel is configured to rotate. 
     In various example embodiments the pulley block assembly further comprises a grounding attachment extending from the arm assembly in a direction away from the unitary fastener and cable guidance device. 
     In various example embodiments the pulley block assembly further comprises a spring-loaded mechanism connected at a first end to the frame and at a second end to the arm assembly, the spring-loaded mechanism configured to hold the arm assembly at a nominal angular position with respect to the frame. In various example embodiments the angular position of the arm assembly with respect to the frame can change when one or more springs in the spring-loaded mechanism are deflected by a radial force applied to the unitary fastener and cable guidance device. 
     Further provided in various example embodiments is a method of using a pulley block assembly, comprising the steps of: providing a pulley block assembly as described herein; directing a cable against the annular depression of the unitary fastener and cable guidance device and causing the unitary fastener and cable guidance device to rotate relative to the arm assembly; and directing the cable from the unitary fastener and cable guidance device into the circumferential groove in the sheave wheel and causing the sheave wheel to rotate relative to the arm assembly. 
     In various example embodiments the a method of using a pulley block assembly further comprises the steps of applying radial force to the unitary fastener and cable guidance device with the cable; deflecting one or more springs in the spring-loaded mechanism; and causing the angular position of the arm assembly to change with respect to the frame. 
     Additional aspects, alternatives and variations as would be apparent to persons of skill in the art are also disclosed herein and are specifically contemplated as included as part of the invention. The invention is set forth only in the claims as allowed by the patent office in this or related applications, and the following summary descriptions of certain examples are not in any way to limit, define or otherwise establish the scope of legal protection. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Examples of the invention can be better understood with reference to the following figures. The components within the figures are not necessarily to scale, emphasis instead being placed on clearly illustrating example aspects of the invention. In the figures, like reference numerals designate corresponding parts throughout the different views. It will be understood that certain components and details may not appear in the figures to assist in more clearly describing aspects of examples of the invention. 
         FIG. 1  illustrates a perspective view of an exemplary unitary fastener and cable guidance device, in accordance with example embodiments; 
         FIG. 2  illustrates a perspective view of an exemplary pulley block assembly operable with the unitary fastener and cable guidance device, in accordance with example embodiments; 
         FIG. 3  illustrates a sectioned side view of the unitary fastener and cable guidance device, in accordance with example embodiments; 
         FIG. 4  illustrates a left side view of the unitary fastener and cable guidance device, in accordance with example embodiments; 
         FIG. 5  illustrates a right side view of the unitary fastener and cable guidance device, in accordance with example embodiments; 
         FIG. 6  illustrates a perspective view of a block member in position to fasten to an exemplary cantilevered axle of the unitary fastener and cable guidance device, in accordance with example embodiments; 
         FIG. 7  illustrates a perspective view of an exemplary cantilevered axle of the unitary fastener and cable guidance device fastened to an arm assembly, in accordance with example embodiments; 
         FIG. 8  illustrates a blow up view of the pulley block assembly, in accordance with example embodiments; 
         FIGS. 9A-9C  illustrate an exemplary sheave wheel, where  FIG. 9A  shows a perspective view,  FIG. 9B  shows an elevated side view, and  FIG. 9C  shows a frontal view, in accordance with example embodiments; 
         FIGS. 10A-10C  illustrate an exemplary hub portion of a sheave axle assembly, where  FIG. 10A  shows a perspective view,  FIG. 10B  shows a top view, and  FIG. 10C  shows a bottom view, in accordance with example embodiments; 
         FIGS. 11A-11C  illustrate an exemplary helicopter frame, where  FIG. 11A  shows a perspective view,  FIG. 11B  shows a front view, and  FIG. 11C  shows a rear view, in accordance with example embodiments; 
         FIGS. 12A-12C  illustrate an exemplary first arm assembly, where  FIG. 12A  shows a perspective view,  FIG. 12B  shows a top view, and  FIG. 12C  shows a bottom view, in accordance with example embodiments; 
         FIG. 13  illustrates a side perspective view of a first arm assembly fastened to the axle hub, in accordance with example embodiments; 
         FIG. 14  illustrates a side perspective view of an exemplary fastener passing through fastening holes arranged around the axle hub, the axle plate, and into the frame, in accordance with example embodiments; 
         FIGS. 15A-15D  illustrate views of a flower nut and socket tool, where  FIG. 15A  shows a perspective view of the flower nut,  FIG. 15B  shows a top view of the flower nut,  FIG. 15C  shows a perspective view of the socket, and  FIG. 15D  shows a top view of the socket, in accordance with example embodiments; 
         FIGS. 16A-16B  illustrate side perspective views of flower nuts assemblies, where  FIG. 16A  shows a first flower nut and fastener fastening the device to a first arm assembly, and  FIG. 16B  shows a second flower nut and fastener fastening a frame and sheave wheel axle assembly to a second arm assembly, in accordance with example embodiments; 
         FIGS. 17A-17C  illustrate an exemplary second arm assembly, where  FIG. 17A  shows a perspective view,  FIG. 17B  shows a top view, and  FIG. 17C  shows a bottom view, in accordance with example embodiments; 
         FIG. 18  illustrates a perspective view of an exemplary tube coupler with a flat surface end, in accordance with example embodiments; 
         FIG. 19  illustrates an exemplary modified socket accessing a long center bolt, in accordance with example embodiments; 
         FIGS. 20A-20B  illustrate elevated side view of an exemplary grounding attachment in relation to the sheave wheel, where  FIG. 20A  shows a twenty-two inch sheave wheel, and  FIG. 20B  shows a twenty-eight inch sheave wheel, in accordance with example embodiments; 
         FIGS. 21A-21B  illustrates an exemplary spring, where  FIG. 21A  shows an elevated side view, and  FIG. 21B  shows a top view, in accordance with example embodiments; 
         FIG. 22  illustrates a perspective side view of the springs tensioned between the first arm assembly and the frame, in accordance with example embodiments; 
         FIG. 23  illustrates a perspective view of the springs extended between an upper spring mount and a lower spring clamp, in accordance with example embodiments; 
         FIGS. 24A-24C  illustrate an exemplary upper spring clamp, where  FIG. 24A  shows a perspective view,  FIG. 24B  shows a top view, and  FIG. 24C  shows a bottom view, in accordance with example embodiments; 
         FIG. 25  illustrates a front perspective side view of the spring held in place by the upper spring clamp, which fastens to the frame mount, in accordance with example embodiments; 
         FIG. 26  illustrates a rear perspective side view of the spring held in place by the upper spring clamp, which fastens to the frame mount, in accordance with example embodiments, with the frame shown partially cut away; 
         FIGS. 27A-27C  illustrate an exemplary lower spring mount, where  FIG. 27A  shows a perspective view,  FIG. 27B  shows a top view, and  FIG. 27C  shows a bottom view, in accordance with example embodiments; 
         FIG. 28  illustrates a close up view of the lower spring mount fastened to the first arm assembly, in accordance with example embodiments; 
         FIG. 29  illustrates a perspective view of the spring extended between the upper spring clamp and the lower spring mount, in accordance with example embodiments; and 
         FIGS. 30A-30B  illustrate a mount bolt, where  FIG. 30A  shows an elevated side view, and  FIG. 30B  shows a top view, in accordance with example embodiments. 
     
    
    
     Additionally, the figures, drawings, and photographs in the &#39;175 application, which is incorporated herein by reference for all that it teaches, including its own incorporations by reference, illustrate certain aspects of example embodiments. 
     The invention is not limited to what is shown in these example figures. The invention is broader than the examples shown in the figures and covers anything that falls within any of the claims. 
     DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS 
     Reference is made herein to some specific examples of the present invention, including any best modes contemplated by the inventor for carrying out the invention. Examples of these specific embodiments are illustrated in the accompanying figures. While the invention is described in conjunction with these specific embodiments, it will be understood that it is not intended to limit the invention to the described or illustrated embodiments. To the contrary, it is intended to cover alternatives, modifications, and equivalents as may be included within the spirit and scope of the invention as comprising the appended claims. 
     In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. Particular example embodiments of the present invention may be implemented without some or all of these specific details. In other instances, process operations well known to persons of skill in the art have not been described in detail in order not to obscure unnecessarily the present invention. Various techniques and mechanisms of the present invention will sometimes be described in singular form for clarity. However, it should be noted that some embodiments include multiple iterations of a technique or multiple mechanisms unless noted otherwise. Similarly, various steps of the methods shown and described herein are not necessarily performed in the order indicated, or performed at all in certain embodiments. Accordingly, some implementations of the methods discussed herein may include more or fewer steps than those shown or described. Further, the techniques and mechanisms of the present invention will sometimes describe a connection, relationship or communication between two or more entities. It should be noted that a connection or relationship between entities does not necessarily mean a direct, unimpeded connection, as a variety of other entities or processes may reside or occur between any two entities. Consequently, an indicated connection does not necessarily mean a direct, unimpeded connection unless otherwise noted. Specific dimensions and other physical characteristics relating to the embodiments disclosed herein are therefore not to be considered as limiting, unless the claims expressly state otherwise. 
     Turning to  FIGS. 1-31 , shown are various aspects of an example unitary fastener and cable guidance device  100  for pulley block assembly  200  and method  3100  of assembly according to various example embodiments. The example unitary fastener and cable guidance device  100 , hereafter device  100 , is a unitary component that aligns with, and feeds, a cable to a pulley block assembly  200 . The device  100  is a unitary component having a pair of discs  102   a - b  that are disposed in a parallel, spaced-apart relationship, each disc ( 102   a ,  102   b ) comprising an inner side ( 104   a ,  104   b ), an outer side ( 106   a ,  106   b ), a disc rim ( 108   a ,  108   b ), and a disc hub forming an annular depression  300  between the pair of discs  102   a - b , the annular depression  300  defining a minimum outer diameter  302  about the axis of the device  100 . The device  100  may also comprise an integral, and centrally disposed, cantilevered axle  114  that extends outwardly from one of the discs  102   b . The concentric disposition of the cantilevered axle  114  enables secure, aligned attachment to the pulley block assembly  200 . The cantilevered axle  114  may define an outer axle diameter  304 , an outer end  116   b , and an opposing inner end  116   a  integral to the outer side  106   b  of one of the discs  102   b , the cantilevered axle  114  forming a threaded axle borehole  118  about the axis of the device  100 . 
     Furthermore, an arrangement of bolts and tamper-resistant flower nuts, e.g.,  1504 ,  234 , which are shown in  FIGS. 15A-D , help create a tamper-resistant fastening means between the cantilevered axle and the sheave wheel, as well as across the components of the pulley block assembly  200 . Through the bolts and flower nuts, e.g.,  1504 ,  234 , the device  100  simultaneously fastens and aligns with the sheave wheel  202 . Once fastened in this manner, the device  100  rotatably feeds the cable to the sheave wheel  202 , which in turn, strings the cable onto conductor towers. 
     In one example embodiment, the pulley block assembly  200  is a helicopter block pulley, used for stringing a cable, such as a power line, across the tops of conductor towers. However, the device  100  is compatible with any type of pulley mechanism that draws in and reels out cable, wire, stream, rope, pilot lines, tether, or the like, as would be apparent to persons of skill in the art. 
     As  FIG. 1  illustrates, the device  100  utilizes a one-piece, unitary configuration, requiring no fasteners or moving parts between the different elements thereof. In one embodiment, the device  100  provides a pair of spaced-apart discs  102   a - b  that are joined at the center by a concave central portion  112 . The discs  102   a - b  and concave central portion  112  rotate simultaneously to feed and guide the cable directly onto a sheave wheel  202  of the pulley block assembly  200 . The concave central portion  112  is integral with the discs  102   a - b , a separate axle component or fastening mechanisms are not required between the discs  102   a - b . This one-piece configuration reduces number of components and moving parts, such as fasteners and bearing covers. 
     Furthermore, the device  100  may include a cantilevered axle  114  that integrally extends from an outer side of one of the discs  102   a - b . The cantilevered axle  114  may serve as a central fastener to attach and align the device  100  with the pulley block assembly  200 . The cantilevered axle  114  may serve as the fastening mechanism, rather than a separate fastener extending through a through-hole extending through the center of the device  100  (compare sheave axle  820  in  FIG. 8 ), or some other external fastening mechanism. 
       FIG. 3  shows the device  100  with a pair of discs  102   a - b  arranged in a parallel relationship, and having substantially equal diameters and widths. In some embodiments, the device  100  may be constructed from aluminum, other metal alloys known in the art of stringing cable and wire, or any other suitable material. In various example embodiments, the device  100  may be scalable to any suitable size and different suitable shapes as would be apparent to persons of skill in the art, for instance to operate with different sized cables and/or different sized sheave wheels  202 , for instance sheave wheels  202  having a twenty-two inch or a twenty-eight inch diameter. 
     The discs  102   a - b  are spaced-apart and coaxial, with a concave central portion  112  extending between the general central region of the discs  102   a - b . A cable can radially ride in the concave central portion  112 , while the discs  102   a - b  serves as a barrier to maintain the cable on the concave central portion  112 . The junction between discs  102   a - b  and the concave central portion  112  is smoothly curved. This hyperbolic configuration enables a cable to smoothly draw in and reel out from the device  100 , and onto the sheave wheel  202 . The hyperbolic configuration also helps smooth the feeding of the cable as a helicopter creates jolting motions. 
     In some embodiments, each disc  102   a ,  102   b  comprises an inner side  104   a ,  104   b  and an opposing outer side  106   a ,  106   b . The inner sides  104   a - b  of the discs  102   a - b  face each other in a parallel arrangement. The outer sides  106   a - b  of the discs face away from each other, with one outer side  106   a  of one disc  102   a  defining a hexagonal leaf shaped cavity which attachment members may be attached thereto, and the outer side  106   b  of the other disc  102   b  being integrally joined with the cantilevered axle  114 . 
     In some embodiments, the discs  102   a - b  also include a disc rim  108   a ,  108   b  that serves as the peripheral portion, circumference. In one example embodiment, the disc rim  108   a - b  comprises a curved peripheral edge that creates a smooth, rounded edge to the discs  102   a - b . The cantilevered axle  114  extends from a generally central region  110  of the disc  102   b , and is concentric with both discs  102   a - b.    
     In one embodiment, the inner sides  104   a - b  of the discs  102   a - b , at or near the generally central regions  110  of the discs  102   a - b  form an annular depression  300 . The annular depression  300  is on the inner side, and thus is formed between the pair of discs  102   a - b . The annular depression  300  defines a minimum outer diameter  302  about a concave central portion  112 . As discussed herein, the minimum outer diameter  302  about the concave central portion  112  can be smaller than the outer axle diameter  302  that defines the cantilevered axle  114 , since the fastening means occurs at the cantilevered axle  114 , and not at the concave central portion  112  between the discs  102   a - b . Also, the cantilevered axle  114  may support greater stress. 
     Looking again at  FIG. 3 , the cantilevered axle  114  extends axially from the outer side of one of disc  102   b , opposite the disc that forms the cavity. The cantilevered axle  114  has an outer end  116   b , and an opposing inner end  116   a  that is integral to the outer side  106   b  of the disc  102   b . For example,  FIG. 5  illustrates a front view of the cantilevered axle  114 , showing the concentric disposition relative to the disc  102   b , and the cantilevered axle  114  integral with the discs  102   a - b.    
     In various example embodiments, the cantilevered axle  114  serves as a fastening mechanism to which a pulley block assembly  200  fastens (See  FIG. 2 ). This central fastening means reduces the amount of moving parts and fasteners required for the pulley block assembly. For this purpose, a threaded axle borehole  118  is formed within the cantilevered axle  114  about the concave central portion  112 . In various example embodiments, the threaded axle borehole  118  provides a threaded surface for a fastener  228 , such as a screw, to threadably engage a flower nut  600  or similar retaining member configured to hold the device  100  on a first arm assembly  212  (e.g.,  FIG. 6 ). In one embodiment, the fastener  228  fastens a first arm assembly  212  from the pulley block assembly  200  to the cantilevered axle  114 . In this manner, the cantilevered axle  114  serves as the connection point for attachment and alignment with the pulley block assembly  200 . 
     By fastening with the cantilevered axle  114 , the need to fasten the device  100  through the concave central portion  112  between the discs  102   a - b , or through the cavity on the outer side of the disc, is negated. This serves to reduce the number of fasteners and moving parts. For example,  FIG. 7  illustrates a fastener  228  connecting a first arm assembly  212  from the pulley block assembly  200  to the cantilevered axle  114  of the device  100 . A threaded fastener  228  and flower nut create a tamper-resistant fastening arrangement between the device  100  and the pulley block assembly  200 . 
     More specifically, since the cantilevered axle  114  contains the threaded portion  118  that is used for fastening the device  100  with the pulley block assembly  200 , the concave central portion  112  does not need to contain the threaded portion  118 , nor a through-hole (not shown), nor any other fastening component. Thus, the minimum outer diameter  302  of the concave central portion  112  can be configured to be smaller than it would otherwise need to be, for instance smaller than the outer axle diameter  304  of the cantilevered axle  114 , which provides the fastening means (e.g., threaded portion  118 , or some other internal or external threads or fastening elements) to attach the device  100  with the pulley block assembly  200  and consequently requires larger dimensions for housing the fastener components and withstanding the consequent stresses. Accordingly, the concave central portion  112  can be provided with an annular depression  300  having a smaller than normal minimum outer diameter  302 , thereby allowing the sides  104   a - b  of the concave central portion  112  to be higher than normal for a given size device  100 , which helps hold the cable more robustly within the device  100 , and/or thereby allowing the overall outer dimensions of the device  100  to be smaller than normal while still handling the same size cable. 
     Looking now at  FIGS. 3-6 , a recessed hexagonal boss  306  is formed within the outer side of one disc  102   a . The recessed hexagonal boss  306  comprises an axially extending wall  308  that defines a hexagonal shape. The hexagonal shape is sized to enable engagement by a tool, such as a socket. Such a tool can be used to engage recessed hexagonal boss  306  and assist with fastening and unfastening the device  100  from a fastener  228  that engages fastening means  118 , thereby effectively turning the device  100  itself into a unitary fastener, while it also functions as a pulley or sheave with advantageous dimensional proportions. 
     Turning now to  FIGS. 2 and 8 through 30B , the device  100  may be configured to be operable with the pulley block assembly  200 . The pulley block assembly  200  is configured to reel in and draw out the cable or wire during stringing operations. The pulley block assembly  200 , when used in conjunction with the device  100 , provides numerous novel structures, such as bearings on which the device  100  rotates about; tamper-resistant fastening mechanisms, such as flower nuts and hexagonal bolt depressions; and tensioned springs for orienting grounding attachments at a desired position to maintain contact with the ground. 
     The device  100  is operable with a pulley block assembly  200  that is configured for rotatably carrying a cable in a circumferential direction onto a sheave wheel  202 . Thus, the device  100  and the pulley block assembly  200  are fastenable to create a single operational unit. In some embodiments, the pulley block assembly  200  may include a helicopter block pulley, known in the art for drawing in and reeling out electrical cables, wire, pilot lines, or generally elongated electrical conductors, while attached to a helicopter through a helicopter frame  208 . Through operation of the device  100  and the pulley block assembly  200 , the cable can be strung across the tops of overhead transmission and distribution poles. Furthermore, the device  100  and the pulley block assembly  200  is operable for both manual and helicopter pilot line conductor stringing. 
     Turning now to  FIGS. 8 and 9A , the pulley block assembly  200  comprises a sheave wheel  202  that rotatably carries the cable that is received from the device  100 . The sheave wheel  202  comprises a wheel hub  900  that defines therein a wheel hub hole  902  (which may contain wheel bearings as is known in the art (not shown)). The wheel hub  900  is generally concentrically disposed on the sheave wheel  202 . In one embodiment, a sheave axle  820  passes through the wheel hub hole  902  of the wheel hub  900  and is attached with a frame  208  that extends from a first end  210   a  to a second end  210   b . In this manner, the sheave wheel  202  is rotatable about the sheave axle  820  and the frame  208 . In one example embodiment, the sheave wheel  202  is fabricated from aluminum, and may be supported by the frame  208 , sometimes called a helicopter frame, which may also be formed from aluminum. The frame  208  may comprise a flange extending longitudinally across the first end  210   a  providing means for attaching one end of a spring system  218   a - b , as discussed below. Any or all components of the pulley block assembly  200  may be iridized for conductivity, subject to required durability of wear surfaces. 
     As  FIG. 9B  illustrates, the sheave wheel  202  comprises multiple spokes that extend from the wheel hub hole  902  to a peripheral region that carries the cable received from the device  100 . The peripheral region of the sheave wheel  202  has a groove  206  that carries the cable. The groove  206  is configured to receive the cable from the cable guidance device  100  (See  FIG. 9C ). The groove  206  extends up to a pair of wheel rims  204   a ,  204   b . As shown in  FIG. 8 , when the device  100  attaches to the pulley block assembly  200 , the groove  206  is in alignment with the shaft of the discs  102   a - b . The wheel rims  204   a ,  204   b  are in alignment with the disc rim of the discs  102   a - b.    
     With reference to the example shown in  FIGS. 8 through 14 , a sheave axle  820  passes through the wheel hub hole  902  in the wheel hub  900  of the sheave wheel  202 . The sheave axle  820  is fastened on one end with a second end  210   b  the frame  208  at frame hole  1102  via fasteners  230   n  passing through an axle plate  810  and the frame  208  into threaded holes in the end portion of the sheave axle  820 . A sheave axle hub  804  attaches with the frame  208  via fasteners  230   a - n  passing through fastening holes  1002   a - n  into threaded holes in the frame  208 . In some embodiments, the threaded portion of the fasteners described herein may include, without limitation, a collar, a socket head lock washer, and a nylon patch, for example. The sheave axle hub  804  may be configured as a flat disc with an extended member, such as central axle  1000 , extending through one or more second bearings  808  positioned in the hub hole  1708  of the second arm assembly  214 , which is shown in  FIGS. 17A through 17C . A second flower nut assembly  236  attaches with the central axle  1000  of the sheave axle hub  804  to hold the sheave axle assembly ( 820 ,  810 ,  804 ) to the second arm assembly  214 . The axle plate  810  may serve as a spacer between the frame  208  and the second arm assembly  214 . In this manner, the sheave wheel  202  rotates freely about the frame  208  and the sheave axle assembly ( 820 ,  810 ,  804 ), while the second arm assembly  214  (and everything attached thereto) can rotate through a limited angle about the frame  208  and the sheave axle assembly ( 820 ,  810 ,  804 ). 
     For purposes of linking the device  100  with the pulley block assembly  200  in alignment with the sheave wheel  202 , a first arm assembly  212  and a second arm assembly  214  are provided, which are connected together near their outer ends  1200   a ,  1700   b  in an offset manner by a tube coupler  226  and fasteners  238   a - n  passing through holes  1204   a - n  and  1706   a - b . A grounding attachment  216  may be attached to the outer end  1700   a  of the second arm assembly  214  by fasteners  232  through holes  1704   a - b.    
       FIG. 12A  shows the first arm assembly  212  comprising an inner end  1200   a  and an outer end  1200   b . The inner end  1200   a  of the first arm assembly  212  has a first depression  1202  that forms a generally circular shape with oppositely positioned flat sides, configured to fixedly engage a correspondingly-shaped flat surface end  1800  of tube coupler  226  ( FIG. 18 ). In one embodiment, at least one first mount hole  1204   a ,  1204   n  forms inside the first depression  1202  (See  FIG. 12C ). The first arm assembly  212  joins the cantilevered axle  114  of the device  100  at the outer end  1200   b , and specifically with a fastener  228  passing through the device mount hole  1206 . 
     Centrally disposed along the first arm assembly  212  is a first spring mount hole  1208 , used to fasten the lower spring mount  224  to the first arm assembly  212  (See  FIGS. 8, 12C, 22, 23 ). In various example embodiments, the first arm assembly  212  may be nominally oriented at about a forty-five degree angle to the longitudinal axis of the frame  208  (or any other suitable angle, such as forty degrees, fifty degrees, thirty-five degrees, fifty-five degrees, thirty degrees, sixty degrees, or any angle there between), with the outer end  1200   b  oriented towards the device  100 , and the inner end  1200   a  oriented towards the inner side  1700   b  of the second arm assembly  214  and the wheel hub  900 . This orientation is maintained through use of a fastener  228 , at least one second bolt  230   a - n , and a springs  218   a - b  that generates spring tension (See  FIG. 22 ) across the first arm assembly  212 . 
     Looking back at  FIG. 8 , the pulley block assembly  200  comprises one or more first bearings  806  and one or more second bearings  808 . The outer end of the cantilevered axle  114  of the device  100  is configured to concentrically receive the first bearings  806  which are mounted in the first hole  1206  of the first arm assembly  212 , wherein the cantilevered axle  114 , and thus the device  100 , are held in place with respect to the first bearings  806  and the first arm assembly  212  by a first flower nut assembly (first flower nut  234  in combination with a fastener  228 ), for instance as shown in  FIG. 16A . Similarly, as  FIGS. 8 and 13 through 17C  show, the central axle  1000  of the sheave axle hub  804  is configured to concentrically receive the second bearings  808  which are mounted in the arm hub hole  1708  of the second arm assembly  214 , wherein the central axle  1000  of the sheave axle hub  804  (and thus also the frame  208 , sheave axle  820 , sheave wheel  202 , and other components) are held in place with respect to the second bearings  808  and the second arm assembly  214  by a second flower nut assembly (second flower nut  236  in combination with a fastener  228 ), for instance as shown in  FIG. 16B . 
     In one embodiment, the first bearing  806  helps rotation and stability of the device  100  in relation to the first arm assembly  212 . The bearings  806 ,  808  may include, without limitation, a cylindrical roller bearing, a spherical roller bearing, a tampered roller bearing, a needle roller bearing, a plain bearing, a ball bearing, and a round ball bearing mechanism known in the art to facilitate rotation of mechanical components. In one example embodiment, an inlet formed in one or more of the bearings  806 ,  808  enables passage of a lubricant on and around the first bearing  806 . In another example embodiment, one or more of the bearings  806 ,  808  are sealed. 
     In various example embodiments, the pulley block assembly  200  may comprise a tamper-resistant mechanism that helps prevent unauthorized or accidental removal of the fastener  228 , or any of the other bolts or fastening mechanisms utilized by the pulley block assembly  200 . As illustrated in  FIGS. 8 and 15A , a first flower nut  234  may be utilized to surround the terminus of the fastener  228  and to cover the first bearing  806 . The first flower nut  234 , and its corresponding fastener  228  located with its terminus (or head) proximate interior surface  1501 , together comprise a first flower nut assembly, which attaches the device  100  to the pulley block assembly  200 . 
     In some embodiments, the first flower nut  234  may comprise a tapered outer surface  1500 , a rectangular interior surface  1501  proximate to and centered about a centrally-located through hole  1502 , the rectangular interior surface  1501  sized to closely fit therein and engage the head of a fastener  228 , and a curvilinear interior surface  1503  axially spaced apart from the rectangular interior surface  1501 , the curvilinear interior surface  1503  comprising curved creating a flower-like shape as shown in  FIGS. 15A-B . The tapered outer surface  1500  is configured to help prevent a wrench from forcibly gripping the outside of the fastener  228  and turning or prying the fastener  228  from its respective hole. Further, a special socket  1504  is provided to rotatably attach and detach the first flower nut  234  from the respective boreholes.  FIGS. 15C and 15D  show the socket  1504  with a hexagonal protrusion  1508  configured to fit in a standard sized socket or wrench, and a curvilinear exterior surface  1506  corresponding in shape with and configured to fit into and engage with the curvilinear interior surface  1503  of the first flower nut  234 . 
     The first flower nut  234  may be configured to cover first bearing  806  by mounting to the appropriate face of the bearing to allow smooth rotation about the first bearing  806 . The first flower nut  234  also helps prevent tampering with the fastener  228 . In one embodiment, a raised boss is utilized on the back of the first flower nut  234 . The raised boss allows the first bearing  806  and the flower nut  234  to rotate as a unitary piece. For example, the first flower nut  234  contacts the inner bearing race of the first bearing  806  bearings, causing the first flower nut  234 , and the first bearing  806  to rotate as one. This is because the outer race is pressed and fixed into the bearing&#39;s housing of the arm which it is pressed into. Thus, the first flower nut  234  tightens against the inner bearing race without contacting the outer bearing race. 
     As  FIG. 16A  shows, the first flower nut  234  substantially covers, or encapsulates the perimeter of, the head of the fastener  228 , which is used to attach the device  100  to the first arm assembly  212 . However, in alternative embodiments, the first flower nut  234  serves as the head of the fastener  228 . For example, the fastener  228  is a simple screw and the first flower nut  234  serves as the head for the screw. This configuration helps prevent tampering of the fastener  228 , and allows the fastener  228  to be used in multiple locations. The flower-shaped flower nut configuration also allows the threading to be locked through nylon patched screws which are more readily available. In other embodiments, a thread lock or nylon patch screw may be utilized to join the flower nut to the first hole of the first arm assembly  212 , and the device  100 . A retaining ring may also be used behind the fastener  228  to retain the fastener  228  in place during assembly. 
     Turning now to  FIG. 17A , the pulley block assembly  200  comprises a second arm assembly  214 , which may be similar in width and thickness as the first arm assembly  212 . The two arm assemblies  212 ,  214  join in an offset parallel arrangement extending perpendicularly to the axis of the sheave wheel  202 . Similar to the first arm mount assembly  212 , the second arm assembly  214  may be nominally oriented at about a forty-five degree angle to the longitudinal axis of the frame  208  (or any other suitable angle, such as forty degrees, fifty degrees, thirty-five degrees, fifty-five degrees, thirty degrees, sixty degrees, or any angle there between), approximately maintaining this orientation during use, on average, through use of a fastener  228 , fasteners  230   a - n , and springs  218   a - b  that generate spring tension across the arm assemblies  212 ,  214 . 
     As  FIG. 17B  illustrates, the second arm assembly  214  comprises an outer end  1700   a  and an opposing inner end  1700   b . This is a similar configuration to the first arm assembly  212 . The outer end  1700   a  of the second arm assembly  214  is configured to form at least one ground hole  1704   a ,  1704   b . The inner end  1700   b  of the second arm assembly  214  defines a second depression  1702  within which is located one or more second mount holes  1706   a ,  1706   b . An arm hub hole  1708  is formed in a central region of the second arm assembly  214  for coupling to the central axle  1000  of the sheave axle hub  804 . 
     comprising With reference to  FIG. 18 , the pulley block assembly  200  may also comprise a tube coupler  226  that serves to connect the inner ends  1200   a ,  1700   b  of the first and second arm assemblies  212 ,  214 . The tube coupler  226  comprises free ends that are sized and dimensioned to fit into the first and second cavities  1202 ,  1702  of the first and second arm assemblies  212 ,  214 . This may be a friction fit connection, with or without additional fasteners. However, in other embodiments, bolts, magnets, screws, and other fastening mechanisms may be used to secure the free ends of the tube coupler  226  other respective cavities. 
     In one example embodiment, the free ends have a circular or cylindrical shape with one or more flat surface ends  1800 . In this manner, the first and second mount assemblies  212 ,  214  couple together in predetermined angular alignment with one another. As  FIG. 18  references, the tube coupler  226  may be constructed from heavy wall aluminum tubing, for example, that is machined to have flat surface ends  1800  on opposing sides. The flat surface ends  1800  create more strength and rigidity for coupling the first and second arm assemblies  212 ,  214  at their inner ends. Multiple tube fasteners  238   a - n  may be used to secure the tube coupler  226  to the arm assemblies  212 ,  214 . A socket  240  ( FIG. 8 ) can be used to rotatably engage the tube fastener  238   a  and secure the tube coupler  226  between the first and second arm assemblies  212 ,  214 . 
     As shown in  FIG. 16B , the pulley block assembly  200  may be provided with a second flower nut assembly  236  that helps prevent unauthorized or accidental removal of its corresponding fastener  228 , or any of the other fasteners behind it, such as fasteners  230   a - n . In one embodiment, the second flower nut assembly  236  is utilized to cover the terminus of its corresponding fastener  228 . The second flower nut assembly  236  may be similar to or the same as the first flower nut  234  and its corresponding fastener  228 , and may interact with bearing  808  in the same or similar manner than the first flower nut  234  interacts with bearing  806 . 
     In some embodiments, the at least one second bolt  238   a - n  may include a long center bolt  230   a  surrounded by six small screws  230   n . However, in alternative embodiments, different numbers and lengths of bolts, screws, and fastening mechanisms may also be used. The bolt and the screws are arranged in a circular pattern that creates a structural integrity and secure fastening mechanism, for redundancy and added strength. In various example embodiments, the long center bolt may be greater than three inches in length; while the small screws may be less than one inch in length. 
     As shown in  FIG. 19 , a modified socket  1900  may be utilized to access the long center bolt  238   a . This may be necessary where the counterbore diameter for the center bolt  238   a  is smaller than the outer diameter of the smallest socket for that size fastener. This feature helps prevent tampering. Any or all of the fasteners used with the pulley block assembly  200  may optionally utilize locking hardware, such as a collar/socket head lock washer, or a nylon patch on the thread portion of the bolts. 
     Furthermore, since the pulley block assembly  200  typically carries electrical cable, it is necessary to include a grounding attachment  216 , i.e., ground arm, metal block to prevent electrocution of the operators, and electrical mishaps. The grounding attachment  216  serves as a reference point for the voltage, creating a common return path for electrical current, and a direct physical connection to the earth. The grounding attachment  216  is configured to maintain constant contact with the cable or wire in the device  100 , and the sheave wheel  202 . Thus, the grounding attachment  216  makes the initial contact with the cable to keep it grounded. 
     In various example embodiments, the grounding attachment  216  is held at a fixed orientation relative to the device  100 , and is held generally in position with respect to the sheave wheel  202  through use of spring tension generated by a springs  218   a - b , discussed below. As  FIG. 20A  shows, the grounding attachment  216  positions one-half inch or more, for example, inside of a twenty-two inch sheave wheel  2000   a  for clearance. And as  FIG. 20B  illustrates, for a twenty-eight inch sheave wheel  2000   b , the grounding attachment  216  is kept the same, and thus there is more clearance. The invention is not limited by specific dimensions unless specifically claimed; all dimensions provided are otherwise simply examples for reference only. 
     Looking again at  FIG. 2 , the grounding attachment  216  attaches directly to the outer end  1700   a  of the second arm assembly  214 , through the at least one ground hole  1704   a - b . The pulley block assembly  200  provides at least one third bolt  232  that is sized and dimensioned to pass through fastening holes formed in the grounding attachment  216 ; and the at least one ground hole  1704   a ,  1704  that form in the second arm assembly  214 . In this manner, the grounding attachment  216  fixedly fastens to the second arm assembly  214 . In some embodiments, the third bolt  232  has a threaded portion for threaded coupling. In some embodiments, the threaded portion of the third bolt  232  may include, without limitation, a collar, a socket head lock washer, and a nylon patch. These components help to secure the third bolt  232  in place. 
     As  FIG. 21A  shows, the pulley block assembly  200  further comprises one or more springs  218   a - b . In one example embodiment, two parallel, spaced-apart springs  218   a ,  218   b  are utilized to generate a spring tension on the arm assemblies  212 ,  214 , so as to approximately maintain, on average, the desired distance between the device  100  and the sheave wheel  202 . The spring tension also serves to maintain the grounding attachment  216  at a relatively consistent orientation. The springs  218   a - b  are configured to generate a spring tension on the first and second arm assemblies  212 ,  214 . In one embodiment the arm assemblies  212 ,  214  are constrained to be nominally approximately forty-five degrees from the longitudinal axis of the frame  208  (or any other suitable angle, such as forty degrees, fifty degrees, thirty-five degrees, fifty-five degrees, thirty degrees, sixty degrees, or any angle there between). The spring tension also tends to maintain the concave central portion  112  between the discs  102   a - b  within a predetermined dimensional range above the groove  206  of the sheave wheel  202 , for instance about one half inch, nominally, for example, which amount varies during use as the springs  218   a - b  expand and contract as tension against the cable varies. 
     As  FIGS. 21 through 24C  reference, the springs  218   a - b  comprise an upper end  2100   a  oriented toward the frame  208 , and a lower end  2100   b  oriented toward first arm  212 . A pair of spring hooks form at opposing ends  2100   a - b  of the springs  218   a - b  ( FIG. 21B ). Additionally, the pulley block assembly  200  comprises an upper spring clamp  220  that attaches to the upper end  2100   a  of the springs  218   a - b  (See  FIG. 23 ). The upper spring clamp  220  is configured to attach to the frame  208 . 
     As  FIG. 24A  illustrates, the upper spring clamp  220  may include a short plate  2300  comprising a mount hole  2302  and having a bore hole  2400  that receives one end of the mount bolt  800  ( FIGS. 8 and 30A -B). The plate  2300  terminates at U-shaped mounting members  2304   a ,  2304   b  designed to mount to the springs  218   a - b . For example, the hook  2102   a  at the upper end  2100   a  of the spring  218   a  slides into either of the ends of the U-shaped mounting member  2304   a - b .  FIG. 24B  shows a top view, and  FIG. 24C  shows a bottom view of the upper spring clamp  220 . 
       FIGS. 8 and 25  show example frame mounts  222   a ,  222   b  mounted to the frame  208 , which provides a mounting surface for the upper spring clamp  220  to attach thereto. The frame mounts  222   a - b  comprise cylindrical portions that are sized correspondingly to the width of frame spring mount hole  1100  in the frame  208  ( FIG. 11A ), as well as shoulder portions that are larger the width of hole  1100 , such that when the frame mounts  222   a - b  are placed in either side of hole  1100  and fastened together, the frame mounts  222   a - b  align within hole  1100  and are fixedly engaged with the frame  208 . The frame mounts  222   a - b  provide a flat rigid surface for enhancing structural integrity of the frame  208 , and for attachment to the upper spring clamp  220 . 
     Upper spring clamp  220  may be attached to frame mount  222   a  by a shaft  242  having a shoulder, wherein the shaft goes through hole  2302  in upper spring clamp  220 , through washer  223 , and into a correspondingly-sized and shaped hole in frame mount  222   a , such the shoulder on shaft  242  is larger than hole  2302  and thus prevents upper spring clamp  220  from sliding off the shaft  242 . The shaft  242  is held in place within the upper spring clamp  220  by a fastener  812   a  that engages with and travels through a through-hole  814  (which may be threaded) in frame mount  222   a  that is perpendicular with the longitudinal axis of the shaft  242 , and is positioned such that the fastener  812   a  engages shaft  242  within frame mount  222   a  and holds shaft  242  within frame mount  222   a . Helping to prevent tampering, fastener  812   a  is inaccessible when frame mounts  222   a - b  are fastened together. 
     As best seen in  FIGS. 8, 25, and 26 , frame mount  222   b  may comprise a tamper-resistant flower nut assembly having all the same features as first flower nut  234  (except little or no tapered outer surface  1500 ), as described previously herein, including a threaded fastener that extends to and engages within a corresponding threaded hole in frame mount  222   a , thereby clamping frame  208  between frame mounts  222   a  and  222   b , through frame spring mount hole  1100 . Note that frame  208  is shown partially cut away in  FIG. 26  for clarity (compare  FIG. 11A ). 
     springs  218   a - b  The washer  223 , which may be machined stainless-steel or any other suitable material, creates a predetermined width between the upper spring clamp  220  and the frame mount  222   a , so as to help in alignment. This aids with friction and ensures the springs  218   a - b  aligned in parallel with the first arm assembly  212  and does not mount crooked or wear incorrectly. 
     At the opposing lower end of the springs  218   a - b , a lower spring mount  224  attaches to the springs  218   a - b , as depicted in  FIGS. 27A through 29 . In some embodiments, the lower spring mount  224  is an elongated plate  2306  with one end having U-shaped mounting members  2308   a ,  2308   b . The hooks at the lower end of the springs  218   a - b  slide into the U-shaped mounting member  2308   a - b . As best seen in  FIG. 23 , a stud mount hole  2310  is formed at the opposing end of the elongated plate  2306 . The lower spring mount  224  is configured to attach to the first arm assembly  212  by attaching the stud mount hole  2310  to a correspondingly-sized stud  244  ( FIG. 8 ) that is attached to the first spring mount hole  1208  in the first arm assembly  212  To limit tampering, the stud  244  may be attached to the first arm assembly  212  by a fastener located in an undersized hole, such that a special socket  240  is required to remove the fastener, for instance as described herein with respect to fastener  238   a  and shown in  FIG. 8 . 
     As shown in  FIG. 27A , a bore hole  2311  may be formed at the end of the elongated plate  2306 , so as to enable passage of the bottom end  802   b  of the mount bolt  800 .  FIG. 27B  shows a top view of the lower spring mount  224 , and  FIG. 27C  shows a bottom view of the lower spring mount  224 .  FIG. 29  illustrates a front view of both ends of the springs  218   a - b  mounted across the pulley block assembly  200 , from the frame  208  at the upper end of the springs  218   a - b , to the first arm assembly  212  at the lower end of the springs  218   a - b.    
     To enhance the structural integrity of the springs  218   a - b , a mount bolt  800  can be used to connect the upper spring clamp  220  to the lower spring mount  224  ( FIG. 30A ). The mount bolt  800  comprises an upper bolt end  802   a  and a threaded lower bolt end  802   b . The lower bolt end  802   b  of the mount bolt  800  is threaded, in order to mate with the threaded inner surface of the lower spring clamp  220 .  FIG. 30B  illustrates a bottom view of the threaded lower bolt end  802   b . The mount bolt  800  can have various lengths to enable adjustment to the spring tension, and the orientation of the device  100  and the grounding attachment  216  in relation to the pulley block assembly  200 . 
     Examples will now be described of the device  100  in use. Turning to  FIG. 31 , a method  3100  of assembling the device to the pulley block assembly, and operation thereof is recited in flowchart is referenced. In operation through the method  3100 , the device  100  is secured into place on the pulley block assembly  200  so that it is aligned with the sheave wheel  202 . The device receives, and feeds the cable to the groove in the sheave wheel from this disposition. In essence, the device guides the cable onto the rotating sheave wheel, and the sheave wheel feeds the cable, such as a pilot line or electric wire, to the top of conductor poles/towers. It is therefore possible that the device operates with various types and sizes of block pulley assemblies. Or, the device may be integrated and manufactured with a specific pulley block assembly. In either case, the device is assembled in an operational mode with the pulley block assembly. 
     In various example embodiments, a method  3100  of assembly may include an initial Step  3102  of providing a unitary fastener and cable guidance device, having a pair of discs joined with a central axis, and a cantilevered axle integrally extended from one disc for enabling fastening. In some embodiments, the device may include a pair of discs, each disc comprising an inner side, an outer side, a disc rim, and a disc hub forming an annular depression between the pair of discs, the annular depression defining a minimum outer diameter about an axis; and a cantilevered axle comprising an outer axle diameter, an outer end, and an opposing inner end integral to the outer side of one of the discs, the cantilevered axle having a threaded axle borehole formed therein about the axis, the outer axle diameter is equal or greater than the minimum outer diameter. 
     The method  3100  may further comprise a Step  3104  of rotating the unitary fastener and cable guidance device. The device rotates at a predetermined rate, which may be automated or manual set by an operator. A Step  3106  includes introducing a cable to the axis of the unitary fastener and cable guidance device. The device rotates in a first direction, so as to feed the cable to the sheave wheel. In some embodiments, a Step  3108  comprises aligning the cable guidance device with a sheave wheel, the sheave wheel comprising a wheel hub hole and a groove extending up to a pair of wheel rims. As discussed above, the spring tension from a spring on the mount arm assemblies helps maintain the device in alignment with the sheave wheel, nominally at an approximate predetermined distance. 
     A Step  3110  includes attaching a first bearing to the outer end of the cantilevered axle. The first bearing allows the device to rotate freely and in alignment with the first arm assembly. In some embodiments, a Step  3112  may include attaching a first arm assembly to the cantilevered axle and the first bearing. The first arm assembly may be nominally oriented at about a forty-five degree angle to the longitudinal axis of the frame  208  (or any other suitable angle, such as forty degrees, fifty degrees, thirty-five degrees, fifty-five degrees, thirty degrees, sixty degrees, or any angle there between), approximately maintaining this orientation during use, on average, by use of first and second fasteners and springs that generate spring tension. 
     A Step  3114  comprises attaching the first arm assembly to a second arm assembly, the second arm assembly mounted to the axle hub, which is mounted to the frame  208 . A second bolt can be used to pass through the respective holes for mounting the arm assemblies. The method  3100  may further comprise a Step  3116  of attaching a grounding attachment to the second arm assembly, the grounding attachment configured to provide an electrical ground for the cable. The grounding attachment may include any component that can ground an electrical circuit. 
     In some embodiments, a Step  3118  includes maintaining a spring tension, through at least one spring, between the frame and the first arm assembly, the arm assemblies are nominally maintained at an approximately forty-five degree angle with respect to the longitudinal axis of the frame (or any other suitable angle, such as forty degrees, fifty degrees, thirty-five degrees, fifty-five degrees, thirty degrees, sixty degrees, or any angle there between), and the distal end of the grounding attachment maintains a substantially fixed radial distance from the outer edge of the sheave wheel. The springs  218   a - b  are configured to generate a spring tension on the first and second arm assemblies  212 ,  214 . In one embodiment the disc rims of the device  100  are approximately one half inch above the sheave wheel  202  when the arm assemblies  212 ,  214  are oriented at an approximately forty-five degree angle with respect to the longitudinal axis of the frame. 
     A Step  3120  comprises rotating the sheave wheel. The sheave wheel can be rotated automatically, or manually by the operator. A additional Step  3122  includes drawing in, with the sheave wheel, the cable from the unitary fastener and cable guidance device  100 . Both the sheave wheel and the device can rotate in two directions and at multiple speeds, so as to adapt the stringing of the cable as needed. 
     In conclusion, a unitary fastener and cable guidance device for a pulley block assembly is operable with a pulley block assembly for stringing cable across cable towers. The guidance device serves to guide a cable, wire, or any similar materials onto the pulley block assembly while decreasing the chances of derailing by providing an unusually deep profile for a given device size. The one-piece design of the device  100  comprises a pair of discs joined at the center with an axis; and a cantilevered axle extending from the outer side of one of the discs. The discs and axis rotate to feed and guide the cable directly onto a sheave wheel of the pulley block assembly. This unitary configuration reduces the number of components including fasteners. Since the unitary cantilevered axle is the fastening mechanism, rather than an axle extending through a hole formed through the middle of the device, the middle of the device can be smaller in diameter, in fact smaller than the diameter of the cantilevered axle. This allows the device to be smaller in overall outer diameter, and/or makes a given device size more robust at holding therein cable of a given size. Various bolts, flower nuts, springs, and fastening mechanisms may be used to minimize the potential for tampering, and to maintain the device and the pulley block assembly at desired orientations with respect to each other. 
     Although the process-flow diagrams show a specific order of executing the process steps, the order of executing the steps may be changed relative to the order shown in certain embodiments. Also, two or more blocks shown in succession may be executed concurrently or with partial concurrence in some embodiments. Certain steps may also be omitted from the process-flow diagrams for the sake of brevity. In some embodiments, some or all the process steps shown in the process-flow diagrams can be combined into a single process. 
     Although exemplary embodiments and applications of the invention have been described herein including as described above and shown in the included example Figures, there is no intention that the invention be limited to these exemplary embodiments and applications or to the manner in which the exemplary embodiments and applications operate or are described herein. Indeed, many variations and modifications to the exemplary embodiments are possible as would be apparent to a person of ordinary skill in the art. The invention may include any device, structure, method, or functionality, as long as the resulting device, system or method falls within the scope of one of the claims that are allowed by the patent office based on this or any related patent application.