US933854A - Sectional pole. - Google Patents

Description

0. 0. M. SGPLE. SBGTIONAL POLE.

APPLIoATIeN FILED APR, 1o, 190e.

Patented Sept. 14, 1909.

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UNITED STATES PATENT OLIVER 0. IVI. SCIPLE, OF MINNEAPOLIS, MINNESOTA.

SECTION AL POLE.

Specification of Letters Patent.' Patented Sept 14, 1909. Application led April 10, 1908. Serial No. 426,240.'

To all whom 'it may concern:

Be it known that I, OLIVER O. M. SQIPLE, of Minneapolis, Hennepin county, Minnesota, have invented certain new and use ful Improvements in Sectional Poles, of whlch the following is a specification.

This invention relates to sectional poles for telephone, telegraph, trolley wires and other purposes.

The primary object of the invention is to provide a pole having a lamp supporting bracket thereon with means for operating the same to enable the person in charge of the lamp to lower it within reach at a point near the base of the pole.

A further object is to provide means for bracing the bars ofwhich the pole is com-y posed, between the joints.

'A further object is to improve the construction of the joint.

Other objects of the invention will appear from the following detailed descrip-y tion.

The invention consists generally in vae rious constructions and combinations, all

as hereinafter described and particularly pointed out in the claims.

In the accompanying drawings, forming part of this speciiication, Figure 1 is a view illustrating a sectional pole embodying my invention. Fig. 2 is a detail view of the lower portion of the pole. Fig. 3 is a detail view showing the construction ofthe joint of the pole. Fig. 4 is a detail view of a modied form of base for the pole. Fig. 5 is a sectional view on the line :zaof Fig. 1. Fig. 6 is a sectional view through a pole having, four bars. Fig. 7 is a detail view showing the construction of the plate at the joint'between the sections of the pole. Fig. 8 is a sectional view on the line z-a of Fig. 4.

In the drawing, 2 represents the base of the pole having a series of lugs 3 thereon to which the lower ends of the bars 4 composing the first section of the pole are se* cured by suitable means as by bolts or rivets. Instead of the lugs 3, ribs 3 and 3 may be formed on the base having recesses between them into which the lower ends of the bars 4 are inserted.

At the joint between the rst and second l sections of the pole is a casting consisting the notch in the plate 6 directly beneath the said rib. Each bar thus has a bearing at two points in the joint. The bars 10 of the neXt section have their lower ends seated on the plate 6 against the rib 9 thereon and fitting within the notch 8 in the plate 5 above, and a band 11 passes around the joint and the ends of the bars 4 and 10 and clamps them securely against the plates 5 and 6. I am thus able to provide an extremely rigid and substantial joint at the intersection of the bars.

As indicated in Fig. 3 the pole tapers slightly from the bottom toward the top and the band 11 is correspondingly iared and is of greater diameter at the bottom than at the top and when forced downward will press the ends of the angle bars firmly against their seats in the plates 5 and 6. Below the joint between the sections I provide a spreader plate 12 having V-shaped notches 13 to receive the upright angle bars 4, and a binder ring 14 incloses the spreader plate and squeezes the bars snugly into the sockets or recesses in the binder, thus preventing any bending or buckling of the bars and materially strengthening the pole. A similar binder plate is shown in Fig. 6, corresponding to the one described, except that it is adapted for use with f our upright bars instead of three. At the top of the pole a cap 17 is provided whereon cross arms 18 are mounted.

Nearthe top of the pole I provide a hub 18 journaled in a recess 19 and carrying a bracket 20 which extends out horizontally and has a downwardly turned end to'support a lamp 21, and is capable of swinging down to an inclined position to allow access to the lamp. To operate this bracket I provide a brace 22 pivoted at 23 on the pole and havhaving a series of notches in their peripheries Y upper surface,

ing an anti-friction bearing 24C on the bracket 20.y lAn` operating cable 25. isY attached to the brace 22 and passes over a pulley 2G on the pole and from thence to a windlass 27 that is mounted between theing his position on the ladder. Generally it has been necessary to irst lower the lamp into. the street, then take the ladder and place it in the street under the lamp and climb up to the lamp and then return the ladder to the pole and raise the lamp to its elevated position. /Vith this invention I am able to avoid the necessity of putting the ladder in the street and of moving it from place to place, the lamp being lowered within reach of the person operating the windlass and when' the lamp is ready for use again it may be raised without moving the ladder.

The pole sections are held together against longitudinal movement by means of threaded rods 28 and a turnbuckle 29, the rod passing through the hub 7 and uniting the base and the top of the pole.

I claim as my invention:

' l. A joint for a sectional pole, comprising anupper and a lower plate and a centrally arranged hub connecting them, said plates and one of said plates having a series of ribs on its under surface and the-other of said plates having a similar series of ribs on its the ribs of each plate being opposite respectively the notches of the other plate, bars fitting within saidnotches and seated against said ribs whereby double bearing points are provided, and a clamping band inclosing the `ends of said bars and clamping them securely in said notches and against said ribs. Y 1

Y 2. In a sectional pole, a joint comprising parallel plates and means connecting said plates with one another, each plate having a series of peripheral notches and a series of ribs alternating with said notches, the ribs of the upper plate being on the under side and those of the lower plate on the upper side and opposite respectively the notches of the other plate, a series of angle bars having their ends Vfitting within said notches and seated against said ribs, and a tapered band inclosing the ends of said angle bars and clamping them securely in said notches and against said ribs.

3. In a sectional pole, a joint comprising upper and lower plates and a centrally aresegesi ranged hub connecting them, said plates hav-V ing-a seri-es of peripheral-notches. and ribs forming V-shaped recesses, the ribs on one plate being in* line with the notches Vof the otherV plate, angle bars having their ends fitting within said notches and seated against said ribs, and means for clamping said `bars and plates together. j'Y

4. A sectional pole comprising a base plate, a series of bars secured thereto, a joint between the rst and second sections of the pole and consisting of plates, and a hub connecting them, said plates having notches in their peripheries and ribs forming V-shaped recesses and in which notches and recesses the endsof Vsaid bars are seated, means for clamping the ends ofV said bars in said notches and recesses, a cap piece. and threaded rods having a tightening means connected to said base plate and said cap piece through said hub, substantially as described.

5. A joint for a sectionalpole, comprising upper and lower plates, and means connecting them, said plates having peripheral seats, and bars having bearings on said seats and extending upwardly and downwardly framsaid plates, and a clamping band inclosing said bars and holding them securely on said seats.

6. A joint for a sectional pole comprisingv upper and lower plates and means connecting them, said plates having notches in their peripheries and. bars fitting 1 within said notches, and a clamping band inclosing the ends of said'bars and holding them securely in said notches.

7. A joint Jfor a sectional pole, comprising upper and lower plates having notches in their peripheries and angle bars fitting within said notches, said upper plate having seats formed therein to receive the upper ends of the depending bars and said lower plate havingseats thereon to receive the lower ends of the upwardly extending bars and means ltor clamping said bars within said notches and against said seats. Y Y Y 8. A joint'for a sectional pole, comprising an upper and a lower plate and means connecting them, said plates being provided with' peripheral seats and upwardly and downwardly extending bars having YtheirV ends fitting within saidv seats and means` for clamping said bars and plates together. Y

` 9. A joint for a sectional pole, comprising an upper and lower plate having peripheral seats and angle bars projecting upwardly anddownwardly'from saidplates and fitting within said seats, each barfhaving a double bearing and means't'or'clamping said bars in said seats. j

10. A joint for a sectional pole, comprising plates arranged one above another and having peripheral seats substantially V sha ed in form, angle bars having their ends tting @sassi within said seats and projecting upwardly and downwardly therefrom, the edges of said bars being flush substantially with the edges of said plates and a band inolosing said bars and locking them in said seats.

l1. A oint for a sectional pole, comprising upper and lower plates and means connecting them, said plates having peripheral seats, and the upper plate being ofless diameter than the lower plate, bars having their ends fitting within said seats and projecting upwardly and downwardly from said plates, and a clamping band tapered in form and inolosing the ends of said bars and clamping them in said seats.

In witness whereof, I have hereunto set my hand this 1st day of April 1908.

OLIVER O. M. SGIPLE;

Witnesses:

J; A; BYiNG'roN J. Hi BALDWIN;

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