US1174950A - Power-pike for erecting poles. - Google Patents

Description

C. E. SEDGWICK.

POWER PIKE FOR ERECTING POLES.

APPLICATION HEED SEPT. 22. 1914.

1,174,950. Patented Mar. 7,1916.

3 SHEETS-SHEET l.

WITNESSES: INVEN'IOR BY zziaflm ATTORNEY C. E. SEDGWICK.

POWER PIKE FOR ERECTING POLES.

APPLICATION FILED SEPT. 22. I914.

Patented Mar. 7, 1916.

3 SHEETS-SHEET 2- BY W Arronxm C. E. SEDGWICK.

POWER PIKE FOR ERECTING POLES APPLICATION FILED SEPT. 22. 1914.

1,174,950. Patented Mar.7,1916.

3 SHEETS-SHEET 3.

IN VENTOR \VITN ES SES CHARLES E. SEDGWICK, OF DIXON, CALIFORNIA.

POWER-PIKE FOR ERECTING POLES.

Specification of Letters Patent.

Patented Mar. 7, 1933M.

Application filed. September 22, 1914. Serial No. 863,042.

T 0 ct whom it may concern.

Be it known that L-CHARLES E. SEDGWICK, a citizenof the United States, residing at Dixon, in the county of Solano and State of California, have invented new and useful Improvements in Power-Pikes for Erecting Poles, of which the following isa specification.

This invention relates to an apparatus for use by power and telephone companies and others in the erection of poles; and the object of the present invention is to provide a simple, practical power pike for this sort of work, which can be operated speedily and economically, and by the means of which two men can accomplish the work formerly required of six. The operation and advantages of the device will appear hereinafter.

The invention consists of the parts and the construction and combination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which- Figure 1 is a perspective view of first operation. Fig. 2 is a perspective view of second operation. Fig. 3 is a perspective view of third operation. Fig. 4E is a perspective view of fourth operation. Fig. 5 is a perspective view of final operation. Fig. 6 is a detail view of the pikejaw. Fig. 7 is a detail view of the fork on the end of the tongues. Fig. 8 is a detail view of the stirrup.

The apparatus comprises a pair of ordinary cart wheels 2, an axle 3, and a long tongue 4 attached to the axle and forming one member of the power pike; the other pike member 5 being arranged at right angles to the tongue and adjacent to the axle. The pike member 5, in practice, consists of a pipe braced from the tongue by a diagonally disposed pipe section 6 and.

guyed, as shown at 7, from its top to points near the wheels to prevent side movement. The tongue carries at its outer end a Y-shaped jaw 8, having serrated edges to grip the pole to be elevated.

9 is a suitable swivel yoke with a stem 10 about eighteen inches long dropped into the top of the hollow pike 5,; the lower end of the stem having aperipheral groove 11 cut around it, and a set-screw 12 is put into the pipe opposite the groove to engage the same, so that while the swivel can turn freely it cannot be pulled out. A chain 13 is attached to one horn of the yoke while the opposite horn of the yoke is split to provide a V-opening 14 to engage a link of the chain so that the latter can be readily looked into the yoke when first picking up a pole and is readily released when the pole has been lifted into supported position upon the pike 5, as will be shortly described.

15 is a sprag which can be readily dropped for the purpose of preventing the wheels from turning, in elevating a pole, and can be raised and held in inoperative position by suitable means, as the chains 16.

In erecting a pole the operation is as follows, the pole being represented at 17 The butt of the pole is placed in the hole or so positioned and supported that when the outer end of the pole is lifted the butt will slide into the hole. The power pike is then brought alongside of the pole and posii tioned as shown in Fig. 1, care being taken that the axle 1s placed in a line passing through the pole hole and at approximately right angles to a line connecting the guying points ltd--19, from which points the pole is to be steadied by lines 20 suitably attached to the pole. These guy lines 20 are referred to as they are used in practice in erecting the pole, although they form no essential part of the present invention.

The haul line 21, which has previously been connected to the outer end of the pipe 5, adjacent to the yoke 9, is run through the Y-jaw 8, at the end of tongue 4, and connected to an automobile, horse, or any other means of traction. The wheels 2 are held from turning by the sprag 15, or any other suitable means. Pulling on the haul line 21 elevates the pole until the parts are brought into the position shown in Fig. 2 with the pole supported vertically above the wheels and on the pike 5, with the center of gravity sufiiciently inside of axle 3 so that there is no danger of the tongue flying up in the air accidentally. The lock chain 18 is then released from the pole. The tongue is then swung around until it stands beneath and in the plane of the pole, with the axle 3 at right angles to the pole; the swivel yoke 9 permitting this turning movement. The tongue is then allowed to rise until the jaw 8 engages the underside of the pole; the weight of the pole on pike 5 holding the tongue in position. It should be stated that in starting to elevate the pole, the yoke 9 is engaged near the outer end of the pole and the parts are so proportioned that when the pole has been elevated, as just described, by means of the pike 5, the jaw 8 will engage the pole at a sufficient distance from the base of the pole to give the necessary lift in order to bring the pole to a vertical position, as will be shortly described. Next, a block and tackle 22 is connected to the pole, near its base, and to the chain 23 of the long tongue adjacent to the axle, as shown in Fig. 3.- Pulling on the line and tackle 22 causes the pole and tongue to act toggle-fashion, gradually pulling the wheels in toward the base of the pole and bringing the latter finally into upright and vertical position.

24 is a stirrup, hung from the tongue, through which the chain 23 passes. The length of this stirrup 24 is such that as the pull on the tackle brings the tongue to a position nearly at right angles to the pole, the pull is taken 05 of the end of the tongue and brought upon the stirrup 2 This takes the bending moment off of the tongue, thereby removing the tendency of the jaw 8 to fly off of the pole and allowing the latter to drop. In other words, the stirrup transfers the up strain on the tongue to a down strain just as soon as the chain strikes it and makes for safety in a considerable degree. This brings to notice two of the important features of the device. First, there is no need of anyone being within the danger zone when the pole is moving; and, second, the maximum strain on all parts and in all operations is at the starting of motion. If anything is going to break, it will do so at that time with little or no resultant damage. Another important feature in connection with this invention is that it enables a pole to be erected close to a fence.

As an erector, one of the chief constructional features is the arrangement of the two pikes 4 and 5 which are at right angles to each other and are mounted on wheels and capable of successive action in the manner hereinbefore described. I

The apparatus, in addition to serving as a pole erector, furnishes means for carrying poles from place to place.

Having thus described my invention, what I claim and desire to secure by Letters Patent is g 1. A power pike for setting poles, comprising a pair of pike members arranged at right angles one to the other rigidly connected to form a portable structure and each having aws on its outer end to successively engagea pole, and a wheeled support for the pikes at their point of juncture.

2. A power pike, comprising apair ofv pike members arranged at right angles one to the other and rigidly connected at their intersection to form a'portable structure, a wheeled support for the pikes at their point of juncture, and means for applying power a pair of wheels, a tongue on the axle, a pike member angularly supported on the tongue,

a jaw member on the tongue, and a swivel oke on the ike member.

4. A power pike, comprising anaxle and a pair of wheels, a tongue on the axle, a pike member angularly supported on the tongue, a aw member on the tongue, a swivel yoke on the pike member, means actingthrough V the tongue as a lever to raise the pike member, and means acting togglefaslnon with the tongue to raise the latter.

i 5. The combination in a power pike, of' an axle and its wheels, a tongue at right angles to the axle and having a short projection to the rear of the axle and a long forward projection'forming a pike member, a second pike member mounted over the axle, a stirrup on the axle, and a chain passed through the stirrup and connected to the rearward short end of the tongue, said stirrup and chain coacting so that when the chain is pulled upon horizontallyin the direction of the tongue the stirrup acts gradually to transfer the point of application of power nearer the axle, substantially as and for the purpose described.

6. An apparatus for setting polesvertically in holes prepared therefor, comprising a frame with rigid, relatively perpendicular pike members, means at the outer end of each pike member for engaging a pole, means for tilting said frame on its corner to lift a pole carried by one of the engaging members a predetermined distance, means for turning the frame to a position substantially parallel with the pole to bring the other pole engaging member into play, and

means for tilting the frame oppositely to elevate the pole to its final position.

7. An apparatus for setting poles vertically in holes prepared therefor, comprising a frame with rigid, relatively perpendicular iio pike members, means at the outer end of each pike member for engaging a pole, means for tilting said frame on its corner to lift a pole carried by one of the engaging members a predetermined distance, means for turning the frame to a position substantially parallel with the pole to bring the other pole engaging member into play, means for tilting the frame oppositely to elevate the pole to its final position, and

a wheeled support upon which the frame is mounted movable toward the pole in the latter stage of the operation.

8. A pole erecting device comprising a frame including rigidly and angularly related arms, each provided with a pole grip ping part, and means supporting the frame for movement; I

9. In a pole erecting device, the combination of a frame, means thereon for raising a pole to slanting position, rigid means on said frame to be brought into engaging position with the pole when the latter is partially raised, and means for moving said rigid engaging member toward the pole to raise the latter to vertical position.

10. In a pole erecting device, the combination of a movable tilting frame, a push member rigid therewith to engage with the pole when the latter is in slanting position, and means for moving said frame toward the pole to operate the push member in a manner to raise the pole to vertical position, said frame being tiltable to allow the push member to rise with the pole.

11. In a pole erecting device, a movably supported frame, an arm on the frame formed with a pole gripping part to engage with and elevate a pole partially, means for operating said arm to elevate the pole, a second arm on the frame angularly and rigidly related to the first arm and formed with a pole gripping part to engage the pole while supported by the first arm for elevating the pole to upright position, and operating means for the second arm.

12. In a pole erecting device, a frame, wheels supporting the frame for movement, a pole engaging rigid member carried by the frame and formed with a pole gripping part to engage a pole for raising the same to an upright position, and means connected to the pole engaging member for moving the frame on its supporting wheels toward the pole, while the latter is being engaged by the pole engaging member.

13. In a device for erecting a pole having its lower end substantially fixed, a wheeled frame, a forward rigid member carried thereby to engage the pole above its lower end to elevate the pole to upright position, a rear extension on the frame, a cable secured to the rear extension and extending forwardly under the latter for advancing the wheeled frame and exerting a downward pull on the extension thereby to tend to elevate the pole engaging member, and a stirrup depending from the latter to engage the cable to transfer the downward pull from the rear extension to the pole engaging member.

14. In a power pike for erecting poles, a pair of angularly related arms, a supporting carriage for the arms, a fixed pole gripping element on one arm, and a turntable pole gripping element on the other arm.

In testimony whereof I have hereunto set my hand in the presence of two subscribing v witnesses.

CHARLES E. SEDGVVIGK.

lVitnesses DAN. MGKINNON, DAN WRIGHT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G.

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