US1049094A - Derrick for erecting poles. - Google Patents

Description

E HOWLAND DERRICK FOR EHEGTING POLES. APPLICATION FILEDQIMAY a, 1911. 1 49,994, Patented Dec.31, 1912.

4 sums-awn 1.

Jnumtnr V B. HOWL'AND. DERRIpK POE BREOTING Poms. APPLICATION FILED MAY 8, 1911.

1 ,O49,094 Patented Dec.31,1912.

4 SHEETS-SHEET 2.

IHiturmma E. HOWLAND.

DERRICK FOR EBEGTING ROLES. APPLICATION FILED MAY 8, 1911.

4 SHEETS-SHEET 4.

EPHBAIM HOWLANE, F P'GNLEAG, MIGHIGrUFT.

DERRICK FOR EBEGTING POLES.

Application filed Hay s, 1911.

To all whom it may concern:

' Be it known that I, EPHRAIM Hownsun, a citizen of, theUnited States, residing at Pontiac, county of Oakland, State of Michigen, have invented a certain new and useful Improvement in Derricks for Erecting Poles, and declare the following to be a, full, clear, and exact description of the some, such as will enable others skilled in the art to which it pertains to make and use the seine, reference being had to the accompanying drawings, which formm part or" this specification.

y invention relates to apparatus to be attached to the rear of-a wheel truck and adapted to the purpose of raising telegraph, telephonepoles or, other smell like structures, snd'it consists in the arrangements and combinations hereinafter described and set forth in the claims.

In the draw1ngs:-lri ure 1, 1s a. perspe o tive v1ew of my apparatus with a. pole at the character described in Lll'E process of elevating and hendlin the same, Fig. 2, is a Vertical elevation oi the apparatus showing the pole in a horizontal position upon the ground. 3, 1s a Vertical elevation of the apparatus showing the pole ina vertical position ready to be secured in the hole in the ground. 4-, shows the derrick l wered and engaging the pole, and in position preparatory to being elevated to lift the pole. Fig. 5, is a detail of one of the latches by which the pole is secured from dropping back as it rises.

Similar letters refer to similar parts.

In the drawings, A, represents the rear end of a truck of substantially the construction shown in a former patent issued to me February 6, 1906, No. 811,923, and to which reference is hereby made but modified as hereinafter described. The bridge B of said wheeled loading and dumping device of said patent referred to, instead of being hinged directly to the rear end of the box thereof, is pivoted directly to the round axle A, as shown in an application filed by me and bearing Serial No. 620,751. The outer edge B of said bridge is so constructed as to engage in the ground and resist the'backward thrust. of both the derric-kand that due to the pull upon the pole, as hereinafter de scribed. From the inner end of the bridge there arises a framework, one portion of this frame work consists of two uprights B B,

Specification of Tietters Potent.

Bees 31,1912. semi Ho. 6535,?51.

united at the top by the cross bar B". rtrong braces extend from about twothirds the way up the vertical bars B to about two-thirds of the way of the length of the bridge from the axle outward. In ig. 1, thereur portion of the vehicle, which carries the de="iclr, is shown, the vehicle is lettered A, while the Sideboards are lettered E. To the frame work of the bridge at c, c, is pivoted the derrick consisting of side pieces F, F, united by steps G, G, which are gradually shortened as the side bars of the derrick approach each other at the top where theynre united by a frame-work F -Bre.ckets J, J, are attached to the connections F and carry friction rollers H At the junction of the metal portion of the crane and the side burs F, F, there is a unitcross bar insertedthrough both side bars and upon which is journaled another friction roller H. A shielding piece C is attuched to the rear end and edge of the bridge 13 to receive the thrust or impact of i the pole D, especially when in a position substantially as shown in Fig. 2. The crane F, F, has also other projecting pieces K, K, about two-thirds of its length from the pivots e, e, and to each of these projecting nieces K, .K, are pivoted two parallel bars L, if, the lower ends of which rest against and upon the ground. Upon one of these side burs L are pivoted a number of substantielly horizontal connecting pieces or latches M, M, of peculiar construction more per t-iculsrly shown in Fig. 5. These latches are formed of metal of two parallel bars m, m, pivoted to a through bolt N and rigidly united by a cross piece. Another through bolt N passing through the opposite bar L projects for enough on either side thereof to engage the bars 722, 71:. Notchcs are cut in the lower edge of eari: of these bars at O, C, so that when the pair of bars m, m, is dropped into it horizontal position, the notches engage the bolt N which thereby supports the latch M and at the same time rigidly maintains it proper distance between the'bars' L and L It is obvious that the purpose of this construction is to permit these latches M, M, to rise out of position. and thereby permit the pole D to gradually rise past each one of these latches, which as the pole rises for enough, drops back into position behind the pole and thus they each act as c satiety stop in case of the breekuge of the tackle or in case it should be required to hold the pole andrest it upon one of the stops during readjustment of the tackle.

in Pig. l. .l'. have shown the crane F, F in horizontal position preparatory to erecting it. which erection is preparatory to raising the pole D shown. The frame C and the .trame B are each provided with pulleys .l journaled at the top of each of the frames. These frames are attached,one,the frame C to the vehicle A. and the frame B to the bridge which is pivoted to the vehicle. When the pole lies upon the ground, as shown in Fig. 4, the pulley rope R is passed over the pulleys P through the sheave S and attached to the hook S that is at the top of the crane frame or on the end of the crane.

frame. As the pulley rope R is lpulled. or

drawn on a suitable drum, not S1OWI1, by.

any desired power, the crane frame begins to rise and asit assumes the position shown in Fig. l, the rope R leaves the pulleys I and is then drawn over the pulley H on the crane frame until finally the pole reaches an upright position, as that shown in Fig. 3.

The bars'L, L, act as a brace for the crane frame F, F, as their lower ends are drawn along on the ground and as the crane F, F, rises in elevating the pole D, from a horizontal to a vertical position, the bars L, L, act as a ratchet and support the crane in any position which it may take. When the pole elevated to a vertical position, as shown in F ig. 3, it comes against the concave roller H and is guided thereby, at the same moment its lower end slips into the hole It, as

shown in that figure, the concave roller H acting as a friction roller to not only guide but permit the pole to drop.

To raise the pole, a tackle S is attached at any convenient point to it with preferably a double purchase pulley, one end of the line being secured to the top of the crane structure F, F, at S and the other end of the rope being taken over the roller H and thence to any source of power that may be used, it being obvious that the source of power is in itself, not a part of my invention and need not be described.

The mode of operation of this device is quite obvious from the foregoing description. Starting with the pole in the position on the ground as in Fig. 2, the butt thereof D resting against the shield G and adjacent to a hole in the earth R for its rece tion and being straddled by the lower ends of the bars L, U, tackle being in place as hereinbe lore described, a pull upon the tackle raises the pole I) from the horizontal gradually to the vertical position, it being shown in Fig.

I nearly in a vertical position; as it rises it passes the latches M, hi, in succession and as it passes each one drops back to its origiuui position and locking with the bolts N maintains a rigid distance between the bars L, L, and also aflords a stop for safety or to rest the pole during the readjustment of tackle, at the same time the crane structure F, F, as it rises assuming gradually the vertical position, is braced and the pull upon the attachment S is resisted by the bracing ot' the bars L, L the pole I) being maintained constantly in a vertical plane obviating the necessity of any guys or guy wires or ropes as it is now found necessary. soon as it rises to a vertical position or sub-- stantially so, the lower end D of the pole drops into the hole R in the earth and as the poles may be held in a vertical position, it can be thereby secured and when secured, the tackle detached, the latches M, M, raised manually and the whole apparatus drawn away from the secured vertical pole as described.

Having thus described my invention, what I desire to claim is 1. The combination of a crane structure, a pair of brace bars pivoted to said crane at one end, adapted to drag along the earth at the other end. and a series of detacluible latches pivoted to one of said bars and detachably engaging the other of said bars and adapted to be detached on the raising it a pole between said bars and to fall back as said pole rises and passes them, substantiallyas described- 2. The combination of a crane structure, a pair of united brace bars pivoted to said crane structure at one end, and adapted to drag along the earth at the other end, a

series'of detachable latches pivoted to one of said bars and detachably engaging the other of said bars and adapted to be de' tached on the raising of a pole between said bars and to fall back as said pole rises and passes them, a fconcaved guide roller at the top of said crane adapted to receive the pole when in a vertical )osition, and guide it in its dropping into the hole prepared to." it, substantially as described.

. The combination of a crane pivoted to convenient support, a bifurcated brace, upon the :bed to any the lower end of which impinges ground and the opposite end at said crane, a resistance piece adapted to receive and resist the thrustof the end of a horizontal pole, a friction roller at the top of said crane to guide said pole when in a vertical position, a tackle connected with said crane for'raising said pole, and automatic means attached to said brace for holding said pole in a given position between the horizontal and vertical, substantially as described.

4. In an apparatus for raising telephone or other poles, two side bars on each side of said pole and arranged in an angular posis tion, whereby said pole must pass from the bottom thereof to the apex of said un le, automatic latches connecting the said slde vented from falling bac: beyond a given point, substantially as described.

6.-1n an apparatus for raising. poles, the combination of means for raising the pole and means along the rise of the pole for keeping the same in substantially any attained position independently of the raising means,-substantially as described.

'7. In a portable apparatus for raising poles, the combination ofa vehicle, a bridge swingingly supported therefrom and adapted to rest on the ground adjacent the hole for the pole, a shielding piece attached to said bridge and against which the butt of the pole can rest and means carried upon said yehicle and bridge by which the pole can be. raised by swinging it upward on the shielding piece as a fulcrum, substantially as described.

8. In a portable apparatus for raising poles, the combination of'a vehicle, a bridge swingingly supported therefrom and adapted to rest on the ground adjacent the hole for the pole, frame members attached to both the bridge and t0 the vehicle, pulleys on the top of said frame members, a crane frame pivoted to said bridge and provided.

with a pulley and a pulley rope adapted to be secured to the end of the crane frame, passed through a sheaveattached to the pole and passed over the pulleys on the frame members and, as the pole rises, to run on the pulley of the crane frame, substantially as described.

In testimony whereof, I sign this specification in the presence of two witnesses.

EPHRAIM HOWLAND.

Witnesses:

R. A. PARKER, Lo'rra LEE BRAY.

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