Rope guard assembly for wedge clamp

• US 5,199,137 A
• Filed: 03/25/1991
• Issued: 04/06/1993
• Est. Priority Date: 03/25/1991
• Status: Expired due to Fees

• Current Assignee: Nylube Products Company
• Original Assignee: Nylube Products Company
• Inventors: Edwards, Franklin R.
• Primary Examiner(s): Brittain, James R.
• Application Number:
  US07/674,696
• Time in Patent Office: 743 Days
• Field of Search: 24/136 R, 24/115 M, 24/136 K, 24/136 L, 24/136 B, 403/211, 403/314, 403/374, 403/409.1, 29/450, 29/517
• US Class Current: 24/136.00K
• CPC Class Codes: B66B 7/08 for connection to the cars or cages, e.g. couplings
• CPC Class Codes: F16G 11/046 by bending the cable around a surface
• CPC Class Codes: Y10T 24/3971 Rope looped about movable member
• CPC Class Codes: Y10T 29/4987 Elastic joining of parts
• CPC Class Codes: Y10T 29/49929 Joined to rod

Abstract

A guard assembly which includes a bushing and assembly for securing the assembly in the slot of a wedge clamp. The bushing abuts a rope secured in the wedge clamp for preventing axial movement of the rope and wedge assembly which could loosen the securement of the rope.

Claims

1. In a rope wedge clamp assembly having a load bearing body portion with a load bearing axis therethrough, said body portion including a rope securement portion having a first end and a second end and a rod connection portion at said second end, said rope securement portion including surfaces forming a wedge shaped slot extending through the body for receiving a rope and wedge assembly in secured engagement under load, a surface forming a second slot extending from side through the rod connection portion and communicating with said wedge shaped slot;

the improvement comprising a rope guard comprising;

abutment means secured within said second slot for abutting a rope secured in the wedge shaped slot thereby preventing axial movement of said rope and wedge assembly which could loosen said securement of said rope and wedge assembly in said wedge shaped slot.

2. The rope guard of claim 1 wherein said abutment means further comprises a bushing abutment secured in said second slot for resisting movement of said rope.

3. The rope guard of claim 1 wherein said abutment means further comprises at least one bushing made of a material softer than the rope which is clampingly secured in said second slot between the sides of said rod connection portion.

4. The rope guard of claim 3 further comprising a bolt means surrounded by said at least one bushing, said bolt means clampingly securing a pair of plates on each side of said rod connection portion.

5. The rope guard of claim 4 wherein said plates are shaped to conform to the sides of said body portion.

6. The rope guard of claim 5 wherein said plates include an angular bend therein for partially sealing a slot opening formed in the wedge clamp.

7. The rope guard of claim 3 further comprising a plurality of said bushings.

8. The rope guard of claim 3 wherein said at least one bushing is a nylon bushing.

9. A rope wedge clamp assembly comprising:

a load bearing body portion including a load bearing axis therethrough, said body portion including a rope securement portion having a first end and a second end and a rod connection portion extending from said second end and including pair of sides on a width thereof;

first surfaces forming a generally axially extending wedge shaped slot open at said first end and said second end, said wedge shaped slot for providing secured engagement of a rope and wedge assembly under tension in a first axial direction;

second surfaces forming a second slot in communication with said wedge shaped slot, said second slot extending through said pair of sides on the width of the rod connection portion;

bushing means for positioning within said second slot in abutting engagement with a portion of said rope and wedge assembly secured in the wedge shaped slot; and

means for securing said bushing means in said second slot whereby axial movement of said rope and wedge assembly in a second axial direction, which would tend to loosen the clamping engagement of the rope in the assembly, is substantially prevented.

10. The wedge clamp assembly of claim 9 wherein said bushing means is made of a material which is softer than said rope.

11. The wedge clamp assembly of claim 9 wherein said bushing means further comprises a hollow bushing and said means for securing said bushing means further comprises a bolt inserted through said bushing means which clampingly engages said pair of sides of said rod connection portion.

12. The wedge clamp assembly of claim 11 further comprising a plurality of hollow bushings forming said bushing means.

13. The wedge clamp assembly of claim 11 wherein a pair of arcuate sides connect said rod connection portion with the second end of said rope securement portion, and said means for securing said bushing means further comprises a pair of plates for clampingly engaging said pair of sides wherein each plate of said pair of plates includes a bent portion therein for conforming to said pair of arcuate sides.

14. A method of securing an elevator rope and wedge in a wedge clamp for guarding against movement of the rope and wedge in an axial direction which could cause loosening of the rope, the wedge clamp being of the type having a load bearing body portion with a load bearing axis therethrough, the body portion including a rope securement portion having a first end and a second end, the body portion having a rod connection portion extending from the second end, the rope securement portion including surfaces forming a generally axially extending wedge shaped slot extending through the rope securement portion and open at the first and second ends, the wedge shaped slot providing for secured engagement of a rope and wedge held under tension in a first axial direction;

and second surfaces in said rod connection portion for forming a second slot extending through a width of the rod connection portion;

said method comprising the steps of;

a) securing said rope and wedge under tension in the wedge shaped slot;

b) providing an abutment including means for securing said abutment in said second slot for abutting said rope; and

c) securing the abutment in the second slot immediately adjacent the rope whereby the rope and wedge clamp are secured against movement in a second axial direction which could cause loosening of the rope.

15. The method of claim 14 wherein the abutment further comprises a bushing made of a material softer than said rope.

16. The method of claim 14 wherein said means further comprises a nut and bolt assembly and said abutment further comprises a bushing about the bolt, said nut and bolt for clampingly securing the bushing in the second slot.

17. The method of claim 16 wherein said nut and bolt assembly further comprises a pair of plates for securement about the width of said rod connection portion.

18. The method of claim 17 wherein said plates are shaped to conform to contours of the body portion of said wedge clamp.

19. The method of claim 14 wherein said rope extends into said second slot and has an axially innermost portion, said abutment abutting the axially innermost end of said rope.

20. In a rope wedge clamp assembly having a load bearing body portion with a load bearing axis therethrough, said body portion including a rope securement portion having a first end and a second end and a rod connection portion extending from said second end, said rope securement portion including surfaces forming a wedge shaped slot extending through the body for receiving a rope and wedge assembly in secured engagement under load, a surface forming a second slot extending from side to side through the rod connection portion and communicating with said wedge shaped slot;

the improvement comprising a rope guard comprising;

abutment means secured within said second slot for abutting a rope secured in the wedge shaped slot thereby preventing axial movement of said rope and wedge assembly which could loosen said securement of said rope and wedge assembly in said wedge shaped slot, said abutment means further comprising at least one bushing made of a material that is softer than said rope which is clampingly secured in said second slot between the sides of said rod connection portion by a bolt means that clampingly secures a pair of plates on each side of said rod connection portion.

21. A rope wedge clamp assembly comprising:

a load bearing body portion including a load bearing axis therethrough, said body portion including a rope securement portion having a first end and a second end and a rod connection portion extending from said second end and including a pair of sides on a width thereof;

first surfaces forming a generally axially extending wedge shaped slot open at said first end and said second end, said wedge shaped slot for providing secured engagement of a rope and wedge assembly under tension in a first axial direction;

second surfaces forming a second slot in communication with said wedge shaped slot, said second slot extending through said pair of sides on the width of the rod connection portion;

hollow bushing means for positioning within said second slot immediately adjacent a portion of said rope and wedge assembly secured in the wedge shaped slot; and

bolt means, for insertion through said hollow bushing means, that clamping engages said pair of sides of said rod connection portion such that said bushing means is secured in said slot whereby axial movement of a rope and wedge assembly in a second axial direction, which would tend to loosen the clamping engagement of the rope in the assembly, is substantially prevented.

22. A method of securing an elevator rope and wedge in a wedge clamp for guarding against movement of the rope and wedge in an axial direction which could cause loosening of the rope, the wedge clamp being of the type having a load bearing body portion with a load bearing axis therethrough, the body portion including a rope securement portion having a first end and a second end, the body portion having a rod connection portion extending from the second end, the rope securement portion including surfaces forming a generally axially extending wedge shaped slot extending through the rope securement portion and open at the first and second ends, the wedge shaped slot providing for secured engagement of a rope and wedge held under tension in a first axial direction;

and second surfaces in said rod connection portion for forming a second slot extending through a width of the rod connection portion;

said method comprising the steps of;

(a) securing a rope and wedge under tension in the wedge shaped slot such that said rope extends into said second slot and has an axially innermost portion;

(b) providing an abutment including means for securing said abutment in said second slot for abutting said rope, said abutment abutting the axially innermost portion of said rope; and

(c) securing the abutment in the second slot immediately adjacent the rope whereby the rope and wedge clamp are secured against movement in a second axial direction which could cause loosening of the rope.