US2840008A

US2840008A - Cable attachment and carrier

Info

Publication number: US2840008A
Application number: US516255A
Authority: US
Inventors: George D Lodvick; Martignoni Walter Louis
Original assignee: Individual
Current assignee: Individual
Priority date: 1955-06-17
Filing date: 1955-06-17
Publication date: 1958-06-24
Anticipated expiration: 1975-06-24

Description

June 24, 1958 G. D. LoDvlcK ET AL 2,840,008

CABLE: ATTACHMENT AND CARRIER 2 Sheets-Sheet 1 Filed June 17, 1955 KM C CJ C www n my@ N mw www W A Wm W p.. .IE/ y A w@ wm am June 24, 1958 G. D. LoDvlcK ET A1.

CABLE ATTACHMENT AND CARRIER Filed June 17, 1955 2f, 4 l e Zb 26a,

2 Sheets-Sheet 2 INVENTORS 650265 D. GDV/CK tf1/4475 L. MART/@NOM l Patented June 24;,v 19578 United States Patent() This invention relates generally to cable attachments and carriers and moreparticularly to cable attachments and carriers suitable for use on ski lifts of the chair type.

In cable attachments and carriers such as have been used on ski lifts of the chair type, it has been common to attach the carrier for the chair directly to the cable.

v 2l v The middle section 16a of sleeve 16 is provided with a bushing seat 21 and the tapered end sectionsr16a and 16b are provided with a plurality of grooves 22. A

In xing sleeve'16 to the wire rope 12, the half sections of the sleeve may trst be vulcanized to the vwire rope by suitable cement. The half sections of the sleeve are securely fastened to thewire ropey 12 by suitable clamping means 23 mounted in grooves 22.' One type of clamping means found to be particularly satisfactory is aclamp manufactured by the Punch-LokCompany, of 321 No. Justine St., Chicago, Illinois. Stainless steel strapping is used to prevent rusting. Clamps of this type can be speedily applied and removed by use of simple tools.

It will be noted that the depth of the grooves 22 is such that when the clamping means 23 is in place it i's This type of attachmentlhas manyundesirable features,

particularly in that swinging of the chair would continuouslyftwist the cable and cause undue wear to the cable. In addition cable attachments andA carriers of this type have been very dilcult to repair and replace. l

In general, it s an object of the present invention to provide a cable attachment and a carrier which is particularly useful for the purpose referred to above.

Another object ofthe invention is to provide a cable attachment and carrier of the above character in which the carrier or hanger may rotate freely with respect to the cable without wearing the cable and in which the freedom of rotation can be adjusted.

Another object of the invention is to provide a cable attachment and-carrier ofthe above ycharacter which can be expeditiously applied to the cable and easilyV repaired or removed.

A further object of the invention is to provide a cable attachment of the above character in which a continuous sleeve of resilient material is used toY prevent wear to the cable.

Additional objects of the invention will appear from the following description in which the preferred embodiment of the invention has been set-forth in detail in conjunction with the accompanying drawing.

Referring to the drawing:

Figure l is a plan view showing a cable attachment and carrier incorporating the present invention.

Figure 2 is a horizontal cross-sectional View taken along the line 2-2 of Figure 3.

Figure 3 is a cross sectional view taken along the line 3-3 of Figure l.

Figure 4 is a cross-sectional view taken along the line 4-4 of Figure l.

Figure 5 is a cross sectional view taken along the line 5-5 of Figure 1.

Figure 6 is an isometric view of a half section of the bushing utilized in our invention.

The embodiment of our invention shown in the draw ing consists of a sleeve assembly 11 mounted on a suitable cable 12 such as stranded Wire rope, and a hanger assembly 13 rotatably mounted on the sleeve assembly. The sleeve assembly consists of a split sleeve 16 `formed of two equal halves each having a middle section 16a and tapered end sections 16b and 16C. The sleeve 16 can be formed of any suitable resilient material such as neoprene and may be provided with reinforcing material molded integral with the sleeve. In this instance we have shown several layers of synthetic reinforcing material 17, which may be of any suitable material such as nylon fabric, imbedded in the molded neoprene.

still within the contour of the sleeve and will not come in contact with the sheave or similar device over which the cable or wire rope 12 is adapted to ride.l

A bushing 26, formed of two identical halves 26a| and 26b made of any suitable material such as phosphor bronze, is mounted inthe bushing seat 21. Half section 26a is shown in- Figure 6. Each bushing section is provided with tlanged ends 27 and a pair of grooves 28. The inner surface ofpeach bushing section is provided with a raised portion 29 which extends longitudinally of the bushing section and engages the resilient bushing seat V21. The corners of the bushing sections engaging the sleeve 16 have been rounded to reducethe shearing stresses on the sleeve.

The bushing sections are fixed within bushing seat 21 by clamping means 31 mounted in grooves 28. These clamping means may also be of anysuitable type such as the clamps previously described. They bushing lsections are so dimensioned that .when they are placed on bushing seat 21 there are small clearances between the adjacent side edges of the same.V Clamping means 31 presses the bushing sections snugly into seat 21 by removing the clearances between the bushing sections.` At

the same time the raised portions 29 are pressedrinto the resilient material of the seat 21 and provideadditional to the sleeve. i Y

The hanger assembly 13 -is rotatably mounted on bushing 26j and consists of two

sections

33 and 34. Both sections are provided with grooves 36which Alie adjacent the grooves 28 in bushing 26 to give additional clearance for clamping means 31. Section 34 is y clamped to section 33 by suitable fastening means such as thecarriage bolt assemblies 37. By inserting shims on the bolt assemblies between

sections

33 and 34, it is apparent that it is possible to adjust the tightness of the connection between the hanger assembly 13 and the bushing 26 and thus to adjust the ease of rotation between the hanger assembly and the bushing.

A spindle 41 is provided on section 33 and serves as a mounting for the object to be supported which in this instance has been shown to be a length of pipe 42 which may be' connected to a ski chair or the like. The pipe is journalled on spindle 41 by means of a bushing 43 and is held in place by a nut 44 threaded onto the spindle.

If desired, suitable means may be provided for lubricating bushing 26 such as fitting 46.

As shown particularly in Figure l, the contour of the sleeve assembly and the hanger assembly 13 is such that the same will ride smoothly over a sheave 48 on which the cable is riding as shown in Figure 5. A sheave of this type is described in our copending application Serial No. 516,256, tiled lune 17, 1955.

Since the sleeve assembly, the bushing and the hanger assembly are in sections, it is apparent that they may be "to the wire rope by the clamping i means previously described. VIt is also apparentl that they may also be readily removed from the wire rope by merely cutting the clamping means. For example, it has been tliatit takes dess than five yminutes to secure acompletefassernblyto'fthe wire rope and less than ten minutes tcireplvace la -wornout assembly. f sleeve 16 'iscontinuouson both sides of the hanger assembly and thus prevents thesleeve fromrseparating romth'e hanger assembly. The hanger assembly 13 `can rotate rt-.lative-to'A the wirerope or cable 12 and hence prcventstwisting of the cable. The object carried by the hanger assembly 13 can rotate on Vthe spindle of the hangerassembly*andftherefore prevents undue stresses from b e'ing` transmitted to t `the hanger assembly. The ease of therotationloflthe hanger assembly with the cable can be varied by adjustment of-bolts 37. l It has been found that the tapered ends of the sleeve 4L In an attachment and a carrier for Va wire rope, a two-part resilient sleeve embracing the wire rope, said sleeve having a middle portion and tapered end portions, means for clamping the tapered end portions of said sleeve to said rope, a seat formed in the middle portion of said sleeve, a two-section bushing engaging said seat, the bushing sections beingof such dimension that there are clearances between the adjacent edges thereof, means for snugly clamping said bushing sections into said seat wear-more rapidly than the other portions of the sleeve. t

If they become too worn, the clamping means adjacent the lend can 4be removed and the sleeve cut off adjacent the next clamping assembly without unduly affecting the smoothness ofinovement over the sheaves. This adds considerablyto the length of time which a sleeve can be `used before it-mustbe replaced.

It is `apparent that we -have provided a cable attachment and carrier which is relatively simple in construction and which greatly facilitates installation, maintenance and replacement. Itis readily adjusted to meet various requirements and is adapted for use on a wide variety of installations.

We claim: A

l. in anlattachment and a carrier for a wire rope, a split resilient sleeve embracing the `wire rope, means for securing said sleeve to said rope, a'seating surface intermediate the ends of the sleeve, a two-part rigid bushing engaging said seating surface, means for clamping said bushing `to'sai'clsleeveto prevent rotation of said bushing relativeto said sleeve, and a hanger assembly rotatably mountedon said bushing and adapted to support an object to be carried thereby.

2. A device as in claim 1 wherein said hanger assem- `bly includes members embracing the bushing and adapted to frictionally engage ythe bushing, and means engaging the members `for applying clamping pressure to the bushing for adjustingtheease of rotation of said hanger assembly with respect to said bushing. 3. A device'as in claiml wherein said hanger assembly includes a journalled connection with the object being carried, said journalled connection having an axis of rotation perpendicular to the axis of rotation of said hanger 'assembly with respect to said bushing.

to remove said clearances to prevent rotation of said bushing relative to said sleeve, and a two-part hanger assembly journalled on said bushing and adapted to support an object to be carried thereby.

5. In an attachment and carrier for a wire rope, a twopart resilient sleeve embracing the wire rope, the portion of the resilient sleeve embracing the wire rope having a contour corresponding to the contour ofthe wire rope, said sleeve having a middle portion and tapered end portions, a plurality of grooves formed in the tapered end portions of saidV sleeve, clamping means mounted in saidgrooves for fastening said sleeves to said cable, said clamping means being 'within the contour of said sleeve, a seat formed in the middle portion of said sleeve, a two-part bushing engaging said seat, the parts being so dimensioned that there are clearances between the adjacent edges thereof, a plurality' of grooves in each of thev bushing parts, clamping `means mounted in said grooves in'said bushing parts for pressing `said bushing parts into said seat to cause the' bushing parts to snugly engage the sleeve to prevent the rotation of said bushing parts relative to the sleeve, a hanger assembly rotatably mounted on said bushing and adapted to support an object to be carried thereby, saidhanger assembly including members embracing the bushing and adapted to frictionally engage the bushing, and means engaging the members for applying clamping pressure to the bushing for adjusting the ease of rotation of said hanger assembly with respect tosaid bushing.

6. A device as in claim 5 wherein said hanger assembly includes' a journalled connection with the object being supported, said journalled connection having an axis of rotation at right angles to the axis of rotation of said hanger assembly with respect torsaid bushing.

References Cited in the le of'this patent UNYITED STATESV PATENTS