US1433751A - Swivel fair lead - Google Patents

Description

C. E. STAHL.

SWIVEL FAIR LEAD. 7

APPLICATION FILED AUG.22. 1921.

1,433,751 Patented oct. 31, 1922,

Witness M a ZZZ Aaftame 'laterall at rigidly 'olted to channel iron frame members CHARLES E. STAHL, 0F NEWTON,

attain oration IOWA,.ASSIGNOR TO THE PARSOIFS COMPANY, 0F

. NEWTON, IOWA.

SV'EL FAIR LEAD.

Application filed August 22, 1921. Serial No. 49 .3126.

To all whom it may concern: 7

' Be it known that I, CHARLES E. S'rAHL, a citizen of the United States, and a resident of Newton, in the county of Jasper, and State of Iowa, have invented a certain new and useful Swivel Fair Lead, of which the following is a specification.

The object of my invention is to provide a swivel fair lead adapted particularly for use with excavating machines, which device is of simple, durable and inexpensive construction, which will necessitate a minimum amount of deflection in the cable in its path from the load to the winding drum.

A further object of my invention is to provide a swivel fair lead having guiding sheaves and rollers mounted on a member which is permittedto rotate about an axis which coincides or nearly so with the center line of the cable leading through the fair lead to the winding device;

With these and other objects in view, my

invention consists in the construction, ar-

rangement and combination of the various parts of my device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and

illustrated in the accompanying drawings, in which:

Figure 1 shows a side elevation of a swivel fair lead embodying my invention.

Figure 2 shows a horizontal, sectional view taken on the line 2-2 of Figure 1.

Figure 3 shows a vertical, sectional view taken on the line 33 of Figure 2; and

Figure tshows a vertical, sectional view taken on the line l-4 of Figure 1.

It is highly desirable that the guide roliers or. pulleys of a fair lead of the kind under consideration be mounted to permit rotation of their supporting member in a horizontal plane in order to reduce friction and to make the pull on the cable, as nearly direct as possible.

In the accompanying drawings, illustratin a form in which my invention may be em odied, I have shown a tubular bearing indicated by the reference character 10 in the form of a rather heavy cylinder, having on its exterior longitudinal grooves 11, and provided at its ends with flanges 12.

The bearing 10 is arranged horizontally and has at its opposite sides rearwardly and inclined arms 13. These arms are 14. The frame members 14 are braced and supported by means of a frame member 15 arranged horizontally below the frame members 1 1 and the bearing 10.

Received within the bearing 10, there is a tubular guide and supporting member 16, which has at its forward end, laterally spaced vertical plates 17. The plates 17 are wider from top to bottom than the guide and supporting member 16, as clearly shown, and have at their upper and lower portions, arms 18 projecting away from said plates and away from the member 16, as illustrated in Figures 1 and 2.

In the upper and lower portions of the plates 17 are journaled spindles or axles 19, on which, between the plates 17, are mounted upper and lower guide pulleys 20.

In the outer ends of each pair of arms 18 are mounted vertical axles or spindles 21, on which are guide rollers 22, as illustrated, for instance in Figures 1 and 2.

a The member 16 is mounted in the member 10 for rotation and held against endwise 1 her 16 between the pulleys 20 and between the rollers 22 will be held by the pulleys, which are normally vertically spaced, and rollers, which are normally horizontally spaced from each other, said pulleys and rollers being mounted onv a support, which is capable of rotation on a horizontal axis.

Each of these features, I consider to be important to the satisfactory operation and most successful use of my fair lead.

By the construction shown, it will be seen that even though the rope pulls laterally and either downwardly or upwardly from the fair lead, it will bear properly against one of the pulleys 20 and also be guided by the rollers 22.

The rollers 22 keep the rope between the pulleys 20 in all of the rotary positions of its the member 16, and the plates 17 and the pulleys 20 hold the rope against being pulledupwardly or downwardly from between the pulleys 20 in all of such positions.

Some changes may be made in the construction and arrangement of the various parts of my improved swivel fair lead withlar member, pulleys journalled in said plates.

spaced from each other in one plane, anti- I friction members supported on said plates at points farther away from said tubular memher, the said pulleys and antifriction members being spaced from each other in a plane at right angles to said first named plane.

2. In a device of the class described, a bearing designed to be mounted on the frame of a machine and having a bore substantially concentric with the path of a cable, a tubular member rotatably mounted in said bearing,spaced plates projecting from said tubular member, pulleys journalled in said plates spaced from each other in one plate, antifriction members supported on said plates at points farther away from said tubular member, the said pulleys and anti-friction members being spaced from each other in a plane at right angles to said first-named plane,

said tubular member having near its ends annular grooves, and rollers supported on said journal and arranged to travel in said grooves.

Des Moines, Iowa, June 13th, 1921'.

CHARLES E, STAHL.

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