US1174788A - Telescopic tower. - Google Patents

Description

F. E. WINN.

TELESCOPIC TOWER.

APPLICATION, FILED APR. 24. 1915- V I Patented Mar. 7, 1916.

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F. E. WINN.

-'I'ELESCOPIC TOWER. A'PPucAnoN FILED APR. 24. I915- Patented Mar. 7, 1916.

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TELESCOPIC TOWER;

Specification of Letters Patent.

Patented Mar. 7, 1216.

Application filed April 24, 1915. Serial No. 28,775.

To all whom it may concern:

Be it known that I, FRANK E. WINN, 'a citizen of the United States, and a resident of Tres Barras, Parana, Brazil, have invented certain new and useful Improvements in Telescopic Towers, of which the following is a specification.

My invention relates to poles or towers which may be used for many different purposes, and the main object thereof is to provide a pole or tower constructed of a plurality of sections telescoped one within the other in such manner as to' provide a nonleakable joint therebetween in order that I may extend the tower to any desired height within its limits by means of water, steam, or other fluids and be certain of maintaining the same at the adjusted height.

My tower, as illustrated, isyparticularly designed for use in lumbering, in conjunction with overhead cables supported thereon, and I may mount the same on a railway car, a truck, a stone-boat, or equivalent, in order to transport the tower to desired points, as for temporary use, and, in this connection, I prefer to construct the support for the tower in such manner as to permit swaying of the top of the tower and also to permit lowering the tower, when collapsed, into horizontal position, this tower support being'illustrated as of the gimbalring type. I

My invention is fully described in the following specification, of which the accompanying drawings form a part, in which like characters refer to like parts in each of the views, and in which Figure 1 is a vertical, central, section taken through a tower constructed in accordance with my invention, collapsed; Fig. 2 is a section taken on the line 22 of Fig. 1; Fig. 3 is'a top plan view thereof; Fig. 4 is a side elevation thereof, extended; Fig. 5 is an enlarged, central, vertical, fragmentary section of Fig. 4; and Fig. 6 is a section taken on the line 6-6 of Fig, 5.

In-the drawings forming a part of this application I have shown a present preferred embodiment of my invention, comprising a base 7 having uprights 8 thereon supporting an annular plate 9 which carries two diametrically arranged pivot pins 10 engaged in a similar, concentric, plate 11 also carrying two diametrically opposite.

pivot pins 12 in a plane at right angles to that of the pins 10'engaged in a circular plate 13 concentric with the plates 9 and 11, whereby the plate 13 may have a universal movement in the nature of a compass.

The plate 13 constitutes the bottom of the tower proper and has an internally threaded collar 14 bolted thereto and a pipe 15'passed I therethrough which is in operative connection with a main supply pipe 16 through a check-valve 17 and also with an outlet pipe 18 through a valve 19, whereby water, steam, or' other fluid may be admitted or may escape through the plate 13.

The collar 14 is adapted to receive the externally threaded lower end of a tubular section 20 having a packing box 21 threaded upon the upper end thereof for any suitable packing 22, a gland 23 being provided for said box 21, and I provide a sleeve 24 at the upper end of the section 20 having a said 'flange forming an-external shoulderfor the section 26. The section 26 also carries-a packing box 29 at the upper end thereof for packing 30 held in place by a gland 31, and a sleeve 32 having a horizontal flange 33 thereon resting upon the top gf thg section 26 and movable within the Slidably mounted in the gland 31 and sleeve 32 is an inner tubular section 34 provided with a flange 35 at its lower end carried by a boss 36 forming a shoulder 37 within said section 34, the flange 35 bearing upon the boss shoulder 28 to limit the downward movement of the section 34, and the downward movement of the section 26 being limited by means of the flange thereon, designated 38.

The section 34 is covered by an air-tight cap 39, shown as in threaded engagement therewith, having an air-cock 40 connected The tower may be mounted in permanent position for some purposes, or it may be carried upon a suitable vehicle, car, sled, or the like, as at 48, Fig. 4, for transfer from point to point, this being the preferred support therefor in the use of the tower for whichit was primarily designed, in lumbering, where trees of sufficient size are not always available for the overhead cable log conveyers. In such use the cable systemmay and probably will include trees as supports or carriers, and the tops of which sway under loads or in winds, and I therefore prefer to provide the universal motion support for the tower whereby the top of the tower will accommodate itself to the said swaying, the guy lines being properly adjusted as to length to suit conditions. This universal motion support also allows the tower to be laid upon its side when being transported,-

as on a flat railway car, with the base thereof in normal position.

In practice, when the tower has been arranged in a desired position and the outer tubular section with the'other tubular sections telescoped therein raised into vertical position, and guyed, the water or other fluid may be admitted to the tower through the check-valve 17, this causing the inner and intermediate tubular sections torise until the entry of fluid is stopped, thereby enabling the rigger to produce a pole or tower of the exact height desired, the guy lines being manipulated to control the sections in their rise, and I will provide the air-clock 40 in order to allow any air above the entering fluid to escape, as I do not desire to permit any vertical movement of the sections after being adjusted as would occur if an air cushion existed in the top of the tower. As the sections rise, the flanges on the telescoped ones impinge upon the respective sleeves'24 or 82 and force the same against the packing in the corresponding packing box, thus tending to pack the tubular sections against leakage in the degreeof the increasing pressure in the rise of said sections, this being supplemental to the normal leakage resistance of the packing. When it is desired to adjust the height of the tower when in use, all that is necessary is to force more fluid thereinto or allow fluid to escape therefrom through the valve 18, this valve being opened also when it is desired to permit the tower to collapse, when its use is no longer desired, or for transfer to another point. It will thus be seen that I provide a pole or tower which may be made of any number of sections of any desired length or thickness, each, according to requirements; water may be pumped thereinto as by the conventional pump connected with the engine used in lumbering to raise the tower to any desired height; and the tower may be almost instantly collapsed for storage or transfer.

While the tubular sections will be made of suflicient strength to meet conditions, the weight thereof is only a fraction of the weight of a solid tower of the same strength, and the relatively small compass of my tower is a great advantage over the long un--- thereof may be modified, within the scopeof the following claims, without departing from the spirit of my invention or sacrificing its advantages.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A tower, comprising a base, a plurality of telescopic sections thereon, means for packing the same against leakage, means for jamming said packing in the outward movement of said sections, a cap for said tower, a bottom for said tower, and means for pass ing fluid through said bottom.

9. A tower, comprising a base, a plurality of telescopic sections thereon provided, each, with a bottom flange, means for packing each section against leakage, a sleeve bearing against the packing of each section provided with a flange resting upon the top of the adjacent section, said sleeves being arranged in the path of outward movement of the respective telescopic section flanges to be forced thereby against the respective packings to compress the latter.

In testimony whereof I have signed my I

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