US1885743A - Pole or mast construction - Google Patents

Description

Nov. 1, 1932. G. M.,MAGRUDER POLE OR MAST CONSTRUCTION Filed March 26. 1932 2 Sheets-Sheet Ma rllder ATTORNEY INVENTOR Y raw): J a 6 J 1 a u J L 7 f WIM 1 @J 0 Q a a a; A 7 a 1 k a I 4* if 8 2 o fl $7 1% a 1 m v w M Nov. 1, 1932.

G. M. 'MAGRUDER POLE OR MAST CONSTRUCTION F iled March 26, 1932 2 Sheets-Sheet 2 INVENTOR ATTORNEY Patented Nov. 1 1932 GEORGE M. MAGRUDER, OF BLAGKVILLE, SOUTH CAROLINA row on MAST jconsraucrron' Application filed March 26, 1932. S rial Ito.'601,437.'

This invention relates to a pole or mast construction adapted for use in supporting lamps, flags, sails, antennas, or any type of device wherein it is desirable at times to have access to the top of the pole without requirs the pola'for any purpose whatever, it is necessary to hire someone particularly skilled in this art to climb the ,pole.

An object of the invention is the provision of a device in the form of a pole or mast adapted to be supported in a vertical position which is swingably supported adjacent its lower end and provided with a ballast so that the pole or mast may be released and. swung to a horizontal support.

Another object of the invention is the pros vision of a pole or mast swingably mounted adjacent its lower end in a pair of armsjsupported by a base member-with a ballast or weighted member suspended from the bottom of the pole and movable between the spaced arms, means being em loyed for securing the pole or mast or the weighted member against movement while retaining the member in a vertical position, the securing means being releasable to permit the pole or mast to be swung to a horizontal position.

A-further object of the invention is the provision of a mast construction having a hollow member swingably mounted between a pair of arms forming a support, the hollow member being provided with a trapdoor for supplying the interior of said member with material which will act. as a weight to counterbalance a pole projectingvertically from the hollow'member, means being employed for releasabIy retaining the hollow member and pole in a substantially vertical position. This invention will be best understood from a consideration of the following detailed description, in view of the accompanying draw ings forming a part of the specification; nevertheless,'it is to be'understood that the in- 0 vention is not confined to the disclosure, being position adjacent the susceptible of such changes and modifications which shall define no material departure from the salient features of the invention as expressed in the appended claims.

In the drawings:

Figure 1 is a view in elevation, partly in section, of a mast'constructed in accordance with'the principles ofmy invention,

- 'Figure 2 is a view in elevation taken at right angles to the view shown in Figurel,

Figure 3 isa fragmentary horizontal section taken along'the line 33 of Figure 1, I

Figure 4 isa plan View of a modified form of the mast construction,

Figure 5 is a vertical section of the modified I form, t Figure 6 is a view inelevation of the .de-

vice shown in Figure 5 at right angles to said view, and c 4 Figure 7 is a view in elevation of a base member and support applied to a gabled roof.

Referring more partlcularly to the drawings, 10 designates a base member which is secured in a substantial manner in the ground or top of a flat roof, as shown at 11. A sleeve- 12 is threaded onto the base member 10 which is in the form of apipe and a stem 13, formed integrally with a support 14, is-threaded into the'sleeve 12.

The support 14 includes a pair of curved arms 15 and 16 which are bowed outwardly and are provided with bearings 17 at their upper free ends. v 1 I Ablock 18 is providedwithtrunnions 19 carried by the bearings 17 on thearms 15 ,and16. A pipe 20 is located within a assage 21 formed centrally of the block 18. K collar 22 is threaded on the outer end of the pipe 21 and abuts the outer face of the block 18. A collar 23 is threaded on the inner end of the pipe 21 and abuts the inner face of a semispherical member 24. By means of the collars 22 and 23 and the sleeve21, the semi-' spherical member 24 secured to the 'block 18.

A second semi-spherical member 25 has its inner edge resting within a flange 27 on the lower end of the semi-spherical member 24.-

The two members and 25 form a hollow ing too great a distance inwar casing which receives concrete, rock, crushed stone, or any suitable material which will door, 30 is hinged at 31 to the semi-spherical member an a latch 32 maintains the door closed.

A pipe 35 is threaded into the sleeve 23 and extends axially of the casing generally designated by the numeral 36. The lower end of this pipe is threaded, as shown at 37, and passes through an opening in the bottom of the semi-spherical member 25. A nut 38 threaded onto. the lower end'of the pipe 35 maintains the. semi-spherical member 25 m position. The lower end of the pipe 35 is closed, as shown at 39, and is provided with an opening 40 through which projects a pin 41 havin a head 42 which normally rests upon the c 0- sure 39 and prevents the pin from falling from the pipe 35. A pin 43 extends transversely of the pipe 35 adjacent the head 42 of thepin 41 andprevents the (pin from movy of the plpe. A curved plate is secured at 51 to the support 14 and is provided with an open ng 52 to'receivethe'pin 41 and lock the caslng 36 against swinging movement.

A mast 53, which in this instance is shown, as a tubular member, is threaded at 54 intothe sleeve 22 and this tubular member extends to any desired height. The weight of the mast 53 is equal to the weight of the casing 36' together with the contents 28 so that the casing 36 acts as a ballast for the mast 53. The support 10 may be varied so that it can be applied to any type of roof or pro ection on the roof or it may .be mounted directly in the ground.

When the device is in position and the pm 41 engaged with the opening 52 in the plate 50, the mast 53 will be held ina vertical position.

If it be desired at any time to repair the mast, it is only necessary to remove the fastening means 51 from the support 14 so that the pin 41 will be released and the mast may then be moved to a horizontalposition for any operations desired since the counterbalance 36 will permit ready lowering of the mast to such position.

All of the parts ofhe device may be. made of metal which will stand the strains, thereby providing for a very compact construction Referring more particularly to Figs. 4 to 6, inclusive, it will be seen that a modified form of the invention is disclosed. In this case the arms are curved at their lower end, as shown at 61, to provide a yoke which is formed integrally with a stem 62. The cas ing 63 issubstantially cylindrical except the is closed by a top 65 and this top is provided with a door 66 hinged at 67 to permit the insertion of the weighting material 68. A latch 69 maintains the door closed.

The cross bar 7 0 is secured at 71 to a pipe 72 passing axially and vertically through the casing 63. Trunnions 73 project diametri cally from the casing 63 and are mounted in bearings 74 formed at the upper end of the arm 60. A pipe 72 formsthe lower end of a mast 75 which-projects beyond the top 65 a distance which will be determinedlby the use for which the mast is to be employed.

The lower end .of the pipe 72 is provided with a pin to prevent a locking pin 81 from movinginwardly on the pipe 72 when the mast 75 has been placed in a horizontal position. A head 82 on the pin rests upon a closure 83 at the lower end of the pipe 72 while the pin 81 is movable through an opening 84 in the closure. A nut 85 secures the lower end of the pipe 72 to the bottom 64 of the 'casing 63.

. I claim:

1. A mast construction comprising a sup-' port, avmast having the lower end swingably mounted in the support, a weighted member carried by the mast below the mounting, a tubular member connected with the mast and extending through the weighted member and means for removably securing the tubular member to the support .to prevent swinging 13 movement of the mast. v I

2. A mast constructioncomprising a base member, a support including a pair of spaced arms rising from the base member, a weighted member, means for swingably supporting the weighted member on the free ends of the arms, a mast rising from the weighted member, means for securing the mast to said weighted member, a movable pin projecting from the lower end of the weighted member, the base member having an opening to receive the pin and hold the weighted member and mast in a vertical position.

3. A mast construction comprising a basemember, a support rising from the base memher, a hollow metal casing swingably mounted on the .support, weighting materials in the casing, a door closing an opening in the walls of the casing, the opening providing means for supplying the interior of the casing with theweighting materials, a mast rising from the casing and adapted to behold in a vertical position by the weightedcasing, and 7 means for releasably retaining the weighted casing in position. a

4. A mast'construction comprising a base arms rising from the base member and provided with hearings on the freeends thereof an elongated casing having trunnions mount member, a support including a pair of spaced 7 ed in the bearings, a slidable locking pin projecting from the lower end of the casing, a plate removably secured to the support adjacent the bottom of the casing and provided with a passage to receive the locking pin and retain the casing against swinging movement, a mast connected to the casing and projecting upwardly therefrom, said casing having weighting materials therein to ballast the mast so that when the plate is removed the mast may be readily lowered to a substantially horizontal position.

.5. A mast construction comprising a base member, a support having bearings, a block swingably supported in the bearings, a

weighted casing secured in suspended relation to the block, a pipe passing vertically and centrally of the casing and secured to the block and easing, a mast rising from and secured to the upper end of the pipe, and means for releasably connecting the lower end of the pipe to the support for maintaining the mast normally in a vertical position.

6. A mast construction comprising a base 5 member, a support having bearings, a block swingably supported in the bearings, a weighted casing secured in suspended relation to the block, a pipe passing vertically and centrally of the casing and secured to the block and casing, a mast rising from and secured to theupper end of the pi e, a pin slidably mounted in the lower end 0 the pipe and normally projecting therefrom, the support carrying a passage to receive the pin 86 and retain the casing and mast in a substantially vertical position.

GEO. M. MAGRUDER.

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