US2721664A

US2721664A - Pole pulling apparatus

Info

Publication number: US2721664A
Application number: US363875A
Authority: US
Inventors: Barfield Walter
Original assignee: Individual
Current assignee: Individual
Priority date: 1953-06-24
Filing date: 1953-06-24
Publication date: 1955-10-25
Anticipated expiration: 1972-10-25

Description

Oct. 25, 1955 w, BARFIELD 2,721,664

POLE PULLING APPARATUS Filed June 24, 195s 2 sheets-@sheet 1 WA LTER BA lELD ATTORNEY l Oct. 25, 1955 w. BARFIELD 2,721,664

POLE PULLING APPARATUS Filed June 24, 19525 2 Sheets-Sheet 2 INVENTOR ATTORNEY me e A United Smiles POLEIPULLING APPARATUS y Walter Bariield, pper Darby, Par

Applicationrune 24,19s3sriatNo. 363,815

z'ciaims.: (ci. 21e-sy' My invention relates to the art of pulling out telephone poles and other relativelyheavy and deeply` embedded objects suchfas. treestumps and thezlike.

One vobject of. this. invention is '-to producel an Aimproved apparatus. for the purpose lsetuforth.

it would be difiicult, if not impossible to reach by conventional equipment now in use.

A still further object is to produce an apparatus for the purpose stated which is power operated and which is simple, durable and easy to manipulate.

In the accompanying drawings:

Fig. 1 is a highly diagrammatic top plan view of a pole pulling apparatus embodying my invention.

Fig. 2 is a highly diagrammatic view partly in section and partly in elevation, looking in the direction of line 2 2 on Figs. 1 and 7.

Fig. 3 is a fragmentary, highly diagrammatic, elevational view looking in the direction of line 3--3 on Fig. 1.

Fig. 4 is a side elevational view showing the position of the parts when the apparatus is ready to begin the pole pulling operation.

Fig. 5 is similar to Fig. 4 but showing the pole after it has been pulled and while it is being moved to a horizontal position.

Fig. 6 is similar to Figs. 4 and 5 but showing the pole laid longitudinally of the truck and ready for transportation to the desired point.

Fig. 7 is a section on line 7 7 on Fig. 6, showing details of construction.

An apparatus of this type includes a truck, means for engaging the pole to be pulled out and power means for exerting the required pull. The present invention relates primarily to making the pole-engaging means so movable and adjustable as to facilitate, or at least render possible, engagement with a pole that is in an out of the way, or partly obstructed, location and, secondarily, the invention relates to improved means for engaging the pole. This being the case, only the body or chassis 10, the engine 12 and the wheels 14 of the truck are shown. All the other parts of the truck as well as any or all other auxiliary equipment which may be associated with apparatus of this type is omitted.

As illustrated, the truck has mounted on it a platform 16 which is movable longitudinally of the chassis in a guide channel 18, Fig. 2, and the channel 18 is movable transversely of the chassis in a guide channel 20, Fig. 1. The platform 16 may be moved, in either direc- 2,721,664 Patented Oct. 2,5, 1955 rice tion, by any suitable means but I prefer to employ a longitudinally disposed double acting, air or hydraulic cylinder 22 for moving the platform 16. longitudinally, ancla transversely disposed double acting air or hydraulic cylnder 24' for moving the platform 16 transversely, of the chassis I0. The cylindersl22 and 24 are connected to the engine 10, or to a pump operated by the engine, by pipes 26 leading to the opposite ends of the cylinders. The structure and operation of double acting cylinders is too well known to need any description. It is enough to say that when fluid pressure is applied to one end of cylinder 22 the platform 16 will move longitudinally in one direction, and vice versa, and that when uid pressure is applied to one end of cylinder 24, the platform will move, transversely, in one direction, and vice versa. This movement is shown in Fig. 1 fromY which it will be seen that the .platform can be moved'to the-inner position shown in solid lines in which it coincides with the chassis of the truck, or outwardly from, and to either side of/th'e longitudinal' axis of said chassis. By this means, the pole-engaging means which is carried by the platform, and which will be later on described, can be moved so as to make it possible to reach and engage the pole. For example, assume that the pole is at position A or B, and assume that there is a ditch, or some other obstruction which would make it impossible to back up or to maneuver sideways sufficiently to reach the pole with the pole-engaging means in the solid line position of Fig. 1. By my invention, the platform is moved laterally or transversely until the pole-engaging means is within reach of the pole.

The pole-engaging means includes a pair of air or hydraulic cylinders 28 which are carried by beams 30 on the platform 16. The bottom ends of the cylinders 28 are connected by a Curved beam 32, Fig. 7, which strengthens the construction and which, by abutting the pole, makes for steadiness and insures that the poleengaging means will be in a position to engage the pole. Working in cylinders 28 are a pair of plungers 34 the upper ends of which are pivoted at 36 to a two-piece collar 38 the parts of which are adapted to be clamped about the pole as at 40. The cylinders 28 are conventional and need not be described. It is sucient to say that they are connected to the engine or to some other source of power, by means of pipes 42 and their operation is such that, when fluid pressure is applied to the lower end of the cylinders, the plungers 34 will move upwardly to raise the pole from its embedded position of Fig. 1 to a point above the ground.

In order to move the pole to the horizontal position of Fig. 6, in which the pole can be conveniently transported, I provide a vertical air or hydraulic cylinder 46 which is pivoted at 48 to a post 50 carried by platform 16. Working in the cylinder 46 is a plunger 52 which is suitably connected as at 54 to a two-piece collar 56 which is adapted to be clamped to the pole as at 58. The cylinder 46 cooperates with the cylinders 28 in pulling the pole out of the ground and, subsequently, it operates to bring the pole from the position of Fig. l to that of Fig. 6*. Thus, simultaneously with the operation of cylinders 28, uid pressure is applied to the lower end of cylinder 46 by means of a pipe not shown, similar to pipes 42, and leading to the engine or to some other source of power. This uid pressure pushes plunger 52 upwardly and it will be noted that the pivoted mounting of the cylinder allows it to accommodate itself to the necessary angle as shown in Fig. l. It will also be noted that, as the plungers 34 reach their maximum height, cylinder 46 will have moved from the position of Fig. 4 to that of Fig. 5 and that the upper portion of the pole now overhangs the rear portion of the chassis. When the parts reach the position of Fig. 5, the pressure in cylinder 46 is gradually decreased and, by

3 gravity, the upper portion of the pole will gradually move towards the chassis until it nnally assumes the position of Fig. 6 in which the pole rests on the stand 50 which carries cylinder 46, or on some other bracket, and on a suitable support 51 located near the front end of the chassis. It will be noted that the pole is firmly held by

collars

38 and 56 and needs no further fastening during transportation. By comparing Figs. 4 and 6 it will be seen that

collars

38 and 56 move through an angle of 90 degrees from the horizontal position of Fig. 4 to the vertical position of Fig. 6.

It Will thus be seen that by this construction, a conventional apparatus of this type is made more versatile in that it is capable of reaching poles which are not accessible with a conventional apparatus in which the pole engaging means is carried by a xed part of the truck.

What I claim is:

1. Apparatus for pulling out poles and other embedded objects said apparatus including an automotive vehicle, a platform movably mounted on said vehicle, means for moving said platform longitudinally of said vehicle, means for moving said platform transversely of said vehicle, a lirst, uid-pressure operated means carried by the end of said platform and including at least one rst cylinder and e a first piston reciprocable in said cylinder, a collar adapted to be clamped above a pole to be pulled, means pivotally connecting said piston to said collar, a second uid pressure operated means also carried by said platform and including a second cylinder and a second piston reciprocable in said second cylinder, a second collar adapted to be clamped about said pole at a point above the point at which said rst collar is clamped about said pole, and means pivotally connecting said second collar to said second piston.

2. The structure recited in claim 1 in which said first cylinder is located beyond the edge of the platform and said second cylinder is located inwardly of the edge of the platform.

References Cited in the le of this patent UNITED STATES PATENTS 1,138,972 Prevost May 11, 1915 1,371,344 Brackett Mar. 15, 1921 1,440,910 Cole et al. Jan. 2, 1923 2,396,614 Somes Mar. 12, 1946