US2753022A - Line anchor - Google Patents

Description

H. D. PAYNE LINE ANCHOR Jufly 3, 1956 2 Sheets-Sheet 1 Filed Sept. 1, 1953 Fig./

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Harry 0. Payne IN VEN TOR.

BY m y LINE ANCHOR Harry E). Payne, Buena Vista, Colo.

Application September 1, 1953, Serial No. 377,782

Claims. (Cl. 189--90) This invention relates to a line anchor and more specifically provides an anchor for attaching a hoist line and sheave and is especially adapted for use in an underground tunnel or the like wherein it is desired to quickly place and remove a line anchor.

An object of this invention is to provide a line anchor for use in attaching a hoist sheave and line wherein the usual anchoring means fails as the surface is too soft to hold the usual pin and wedge mechanism.

A further object of this invention is to provide a line anchor wherein a plate is provided to abut against a wall or the like and a pair of jackscrew legs engage the side walls of a tunnel or the like at a point spaced from the vertical wall and the tightening of the jack legs forms a rigid V-structure.

A still further object of this invention is to provide a line anchor which may be easily placed and removed and which is well adapted for the purposes for which it is intended.

Yet another object of this invention is to provide a line anchor which is sturdy in construction, simple to manipulate, and inexpensive to manufacture.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is a top plan view of a line anchor of this invention showing the hoist sheave and line in phantom;

Figure 2 is an end elevation view from the left-hand side of Figure 1 showing details of the jackscrews;

Figure 3 is a detail, sectional view of one of the jack legs taken substantially along the center line of the legs;

Figure 4- is a transverse, vertical section taken substantially along section line 4-4 of Figure 1 showing details of the sheave attaching means and the leg attaching means; and

Figure 5 is a perspective detail view showing one of the leg attaching means.

Referring now more specifically to the drawings, it will be seen that the numeral generally designates the line anchor of this invention used in a tunnel 12 having a vertical face 14 and used to anchor a hoist line 16 and a suitable sheave 18.

It will be seen that the line anchor 10 comprises a substantially flat plate 20 having surface engaging teeth 22 on one surface thereof and a horizontally disposed circular rod 24 on its opposite face. An attaching ring 26 is secured to the rod 24 adjacent its center portion and the plate 20 has a circular aperture 28 for limiting the lateral movement of the attaching ring 26 which is engaged by a suitable hook 30 on the sheave 18. Pivotally mounted on remote ends of the shaft 24 is a jackscrew supporting leg 32 and it will be seen in Figure 5 that the remote ends of the shaft 24 are provided with a split clamp 34 having a clamp screw 36 projecting through extending lugs 38 for clamping the split clamp 34 on the 2,753,022 Patented July 3, 1956 "ice end of the rod 24 and as best seen in Figure 4, each of the legs 32 has a projecting portion 40 which engages the side edge of the plate 20 thereby limiting the axial movement of the leg 32 in relation to the moutning shaft 24.

Now referring more specifically to Figure 3, it will be seen that each of the legs 32 has a projection with an apertured off-set end portion 42 for engaging the shaft 24 and extending therefrom is an elongated rod 44 having a plurality of apertures 46 for receiving a cross pin 48 which is insertable through a collar center .member 5% for selectively engaging apertures 46 thereby adjusting the rod 44 in relation to the tubular member 50 as desired by the user.

The opposite end of the tubular member 50 is provided with a threaded aperture 52 for receiving an elongated threaded rod 54 therein and by rotating the threaded rod 54 the rod 54 may be adjusted relative to the tubular member 50. The remote end of the threaded rod 54 is provided with a ball-like member 56 seated in a ball seat of a substantially cone shaped member 58 having ground engaging projecting spurs 60 on the outer surface thereof and a retaining member 62 screw-threaded about a portion of the ball member 56 thereby retaining the ball member 56 on the cone-like member 58. A pair of right angularly related bores 64 is provided in said screw-threaded rod for inserting a rod or the like for rotation of the screw-threaded member 54.

The operation of the device will be readily understood. When it is desired to secure a line for use in hoisting or pulling some device and a vertical wall and two side walls are presented, the plate 20 may be placed near the upper limits of the vertical wall and the jackscrew legs 32 extended downwardly and outwardly from the plate and engaging with the side walls of a tunnel 12 and the plate 20 may be anchored firmly by extending the legs 32. The legs 32 may be first adjusted roughly by the selective positioning of the pin 48 in apertures 46 along the polygonal rods 44. By insertion of a tool in the bore 64 the threaded rod 54 may be rotated thereby securely jamming the cone member 58 into the side walls of the tunnel 12 thereby engaging the spurs 60 on the cone like member and the teeth 22 on the plate 20 in secure engaging position. Obviously, the hook 30 of a sheave or a suitable device may be used in securing a line 16 to the plate 20. Obviously, the device may be secured in a various number of positions and orientations where various adjust-- ments are necessary. When it is desired to disassemble the device, the entire components may be removed from each other for compactness of storage. As the sheave 18 is used to hoist or pull a device as necessary, any looseness of the legs may be taken out by rotation of the screwthreaded jack member 54.

The line anchor of this invention finds itself especially useful in mining where it is desirable that a slusher scraper may be used to scrape and clean the ribs and corners of a drift or space. Further, this device may be used wherever necessary to secure a hoist line. As clearly seen, the various components are sturdy in construction and any suitable material may be used in the construction of this line anchor.

From the foregoing, the construction and operation of the device will be readily understood and further explanation is believed to be unnecessary. However, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the appended claims.

What is claimed as new is as follows:

1. A line anchor comprising a plate for engaging a vertical end wall of an enclosure, said enclosure also having vertical side Walls, a pair of diverging downwardly inclined legs for engaging the side walls of the enclosure, said legs being adjustable to securely anchor said plate against the vertical end wall, means on said plate for attaching a line thereto, and a rod secured to the outer face of said plate, said legs being pivotally attached to said rod.

2. A line anchor comprising a plate for engaging a vertical end wall of an enclosure, said enclosure also having vertical side walls, a pair of diverging downwardly inclined legs for engaging the side walls of the enclosure, said legs being adjustable to securely anchor said plate against the vertical end wall, means on said plate for attaching a line thereto, and a rod secured to the outer face of said plate, said legs being pivotally attached to said rod, each of said legs being provided with a pair of members telescoping into a center tubular section and means on each end of said tubular section for securing said members in adjusted position.

3. A line anchor comprising a plate for engaging a vertical end wall of an enclosure, said enclosure also having vertical side walls, a pair of diverging downwardly inclined legs for engaging the side walls of the enclosure, said legs being adjustable to securely anchor said plate against the vertical end wall, means on said plate for attaching a line thereto, and a rod secured to the outer face of said plate, said legs being pivotally at tached to said rod, said line attaching means including a ring loosely received on said rod for receiving a line hoist hook therein.

4. A line anchor comprising a vertical plate having a plurality of teeth on one surface for engaging a vertical end wall, a pair of diverging downwardly inclined legs pivotally supported from said plate, and means on said plate for attaching a line, said legs being adjustableand provided with surface engaging members on their outer ends for engagement with oppositely disposed vertical walls that are perpendicular to the plate engaging vertical end wall for anchoring the plate against the vertical end wall, said legs being pivotally attached to the remote ends of a rod extending across said plate and said line attaching means including a ring surrounding said rod adjacent its mid-point.

5. A line anchor for supporting a line from a point adjacent a vertical end wall of an enclosure, said e11- closure also having vertical side walls in perpendicular relation to the end wall, said anchor comprising a vertically disposed plate adapted to be engaged with the surface of the end wall, a transverse rod on said plate and projecting outwardly therefrom, a pair of downwardly inclined and diverging legs pivotally attached to the ends of said rod, means on the free ends of said legs for engagement with the side walls, said legs being longitudinally adjustable, means for extending said legs thereby forcing the plate into locking engagement with the end wall and urging the means on the free ends of the legs into locking engagement with the side walls, and means on said rod for attachment of a line thereby anchoring the line adjacent the end wall.

References Cited in the file of this patent UNITED STATES PATENTS 911,504 Jay Feb. 2, 1909 979,514 Kray Dec. 27, 1910 1,762,740 Rains June 10, 1930 2,510,593 Mechling June 6, 1950

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