US1271284A

US1271284A - Rope-clamp.

Info

Publication number: US1271284A
Application number: US22354718A
Authority: US
Inventors: Oliver Crosby
Original assignee: American Hoist and Derrick Co
Current assignee: American Hoist and Derrick Co
Priority date: 1918-03-20
Filing date: 1918-03-20
Publication date: 1918-07-02
Anticipated expiration: 1935-07-02

Description

0. CROSBY.

ROPE CLAMP.

APPLICATION FILED MAR. 20. 1918;

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of the cla np orvthe part that mounted on, t the threaded ends of the U-bolt for grippirrg the rope or cable to prevent it from slipping in the clamp under severe or unusual strain.

A further object is to provide a gripping member which will clamp the rope with an increasing pressure proportionate to the movement of the rope in the clamp. That is. the slipping of the rope will automatically result in increasing the pressure of the clamp thereon and continue to increase such pressure if the slippage continues.

A further object is to provide a compara tively simple, inexpensive adjunct to an ordinary type of rope clamp which will render it particularly effective for the purpose designed.

The invention consists generally in various constructions and combinations, all as hereinafter described and particularly pointed out in the claims.

In the accompanying drawings forming.

part of this specification,

Figure 1 is a sectional View of a rope clamp embodying my invention,

Fig. 2 is a side view of theclamp,

Fig. 8 is a sectional view taken on a line at right angles substantially to the section line of Fig. 1,

Fig. 4 is a perspective view of therope gripping member between which and the U- bolt the rope or cable is clamped.

In the drawing, 2 represents a U-shaped bolt having threaded ends 3 for clamping" nuts 4. 5 is a block having sockets 6 therein wherein .the threaded ends of the U-bolt are slidable. The block 5 has upwardly projecting brackets 7 formed thereon in, pairs, with a recess 8'between them into which the ends of the rope or cable 9 to be clamped together are placed, the U-bolt straddling the cable with its threaded ends projecting through the sockets in the block. In the bottom of the recess between the pairs of brackets 7 a seat 10 is formed, preferably j i f specification Letters Patent-i concavefandfadapted "to, *reeieivef sii' pi' of rock lengthwise of the cable, it is held by shaped surfafeeprovifd d putheinnd er member 11;. 1 .Thi sim ber 1Q isiof na rfa e e; he Qableand t eu-s ared' portioneof the bolt will be on the opposite sideofthe cable and will be drawn against the cable surface when the nuts are tight ened and the cable ends will be firmly clamped between the bolt and the surface of the member 11. This member 11 is free to rock in its bearing on the block 10 when a strain is applied in either direction to the cableand as the center of the bearing surface 12 is a less distance from the axisof therocking member than the end portions of the surface 12, it follows that if the cable slips in the clamp and tilts the rocking member to one side orthe other, the pressure of such member on the cable will immediately increase and continue to increase if the cable continues to slip. The rocklng member therefore has the function of a wedge for in- Patentedtlnly fiiifls? n inieanomamaiviaichao,1918. seiialnaaaasir. l 5

creasing the clamping effect of the U'-bolt 1 on the cable proportionately to the strain and slippage of the cable. y The rocking member may be made in va rious sizes, according to the purpose for which the clamp is to be used, and its shape may be modified and still be within the scope of my invention.

The upper portion of the rocking member projects between the bracket 7 and is guided thereby and while the member is free to the brackets against movement transversely thereof. I

The rocking member 11 may be prevented I from falling out of place when the rope cable is removed, by any suitable means, for instance by slightly bending or deflecting inwardly the upwardly extending brackets 7 V bolt, a block s li dable thereon, clamping nuts for the ends of said bolt, and a rocking member interposed between saidblock and the rope or cable to be clamped and having a bearing surface for such rope.

2. A rope clamp comprising a U-shaped bolt, a block slidable thereon, clamping nuts for said bolti and a member seated in" said block and having a surface for contact with the cable to be clamped.

3. A rope clamp comprising a bolt to straddle the cable to be clamped, a block "and a memberseated on said block and hav slidable on the ends/of said bolt, clamping nuts for said'ends, said block having brackets arranged in pairs with a, recess between them to receive the cable'ends to be clamped,

ing freedom of oscillation therein and guided by said brackets, said member having a surface betweenwhich and saidbolt the cable is clamped. 4. A .rope clamp, comprising a U-shaped -bolt,a block slidable on the ends thereof,

clamping nuts mounted on said bolt for engaging said block, said block having a concave seat formed in its inner face and a .1 member having a correspondingly shaped surface to ,fit said seat and rock thereon and provided With'a facebetween which and the Copies of this patient may be obtained for fivecents eaclisliy'addrelssing the Comniissionergof Patents,

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