US2493695A - Hoisting tower - Google Patents

Description

Jan. 3, 1950 R. v. PAYNE 2,493,695

HOISTING TOWER Filed Sept. 9, 1.946 3 Sheets-Sheet l IN VEN TOR. fiabfi gVPa yne ATTORNEYS Jan. 3, 1950 R. v. PAYNE 2,493,595

HOISTING TOWER Filed Sept. 9, 1946 a Sheets-Sheet 2 1 N V 111V T( )R Fa [p5 M/ ay/m Jan. 3, 1950 v, PAYNE 2,493,695

HOISTING TOWER Filed Sept. 9, 1946 3 Sheets-Sheet 3 INVENTOR.

A'ITURNEYS Patented Jan. 3, 1950 UNITED STATES PATENT OFFICE HOISTING TOWER Ralph V. Payne, Washington, D. 0.

Application September 9, 1946, Serial No. 695,728

The invention relates to up, and more especially to a quick-erecting and knock-down hoisting tower or temporary elevator.

The primary object of this invention is the provision of a tower of this character, wherein a vertically movable workmens platform and small stifllegged derrick is arranged so that the same can be raised or lowered, using the power of the engine and in this manner the erection or taking down of the tower eliminates the necessity of workmen subjecting themselves to hazardous climbs as is ordinarily required with hoisting towers now employed on building construction.

A further object of the invention is the provision wherein the construction is novel in form so that when in the knock-down condition, it can be conveniently and easily transported'to the location required for its service, and can also be erected using the stiff-legged derrick to. hoist long prefabricated sections of the tower into place with the power of the engine.

' A still further object of the invention is the provision of a tower which has the base of the tower and the engine in one compact unit.

- With these and other objects in view, the invention consists in the features'of construction, combination, and arrangements of parts as will be hereinafter more fully described and illustrated in the accompanying drawings, which disclose one of the many methods which could be used in a tower of this character.

In the accompanying drawings:

Figure 1 is a side elevation of the tower at the stage of erecting the outer panel of the second section of the elevator.

Figure 2 is a front elevation with the first sectioninposition above the stub towerr a Figure 3 is a top plan view of the workmens platform and diagonal members.

Figure 4 is a perspective view of one of the sections.

Figure 5 is a perspective view of a ledger for connecting the sections in position.

Figure 6 is an elevational view of the elevator;

Figure 7 is a side view thereof, and

Figure 8 is a perspective view of the pulley block.

Referring more in detail to the drawings, the device comprises a suitable base or. platform ID a hoisting tower set- 1 Claima (Cl. 1872) provided with a lift l8 by which the unmounted end may be steered and controlled.

Fixed at one end of the base III are the vertical corner posts 20, and fixed to the sides of the base l0 and relatively spaced from the corner posts are similar posts 22. These posts form the lowermost section of a tower, elevator or scaffold. The posts are supported by the diagonal braces 2| fixed to the upper ends of the posts 20 and extending to the base as shown, and the diagonal braces 23 are fixed to the upper ends of the posts 22 and to the center of the opposed posts parallel theretoas shown. Horizontal braces 25 also tend to strengthen the structure.

. Fixed to the corner posts 20 and 22 are the prefabricated sections 24 shown in Figure 4, having the vertical channel iron members 26, transverse. channel iron members 28 and diagonal members 30. Intermediate the members 26 and centrally thereof are the vertical track members 32 for the platform of the elevator 34, which travels within the sections. The elevator 34 is provided with opposed guides 35 which are positioned to travel on opposite track members 32 guide the elevator in its ascent and descent.

, The members 26 are provided with keyhole slots 36 which are adapted to receive the headed pins 38 of the transverse channel beams 40, the pins of which are welded to the upper and lower edges thereof. The beams are positioned in the members 26 by means of the pins 38 in horizontal relationship with the members 28, and pivoted latches 42 mounted on the members 28 by pins 44, engage the ends of the beams and retain them in fixed relation to the sections 24. The beams 40 can be connected at various other points temporarily, but in the position previously described, they are'securely connected to the sections 24.

-,The corner posts and sections 24 being constructed of channel iron, are welded in fixed relation to each other, and when the members 26 of the sections abut each other during the construction of the tower, the members 28 are welded to the top of the lower section of the members 26,

. asshown in Figure 4, but are not connected to of the required size and length, which has at one end thereof axles I2 journalled in bearings l4,

the lower ends of the upper sections. By thus employing the required number of sections 24 and beams 40, the tower may be built to any desired height upon the base In by the fastening of such section and beams as previously described.

Arranged for vertical travel within the scaffold or tower, between the corner posts and sections, is the elevator or workmens platform 34. Fixed to the elevator 34 centrally thereof is the form, a plurality of pulleys in the pulley block and on the elevator structure, a unit hoisting cable extended from a drum of the motor over pulleys in the pulley block and on the boom for attachment to a unit of the structure for elevating the unit, and an elevator hoisting cable extended from another drum of the motor and trained over a pulley in a unit positioned on one side of the structure, around pulleys of the pulley block of the elevator and to an anchoring point in the upper end of a unit on the opposite of the structure whereby as force is applied to the cable the cable elevates the elevator platform with the derrick thereon to a new position.

RALPH v. PAYNE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,667,440 Scannell Apr. 24, 1928 1,741,940 Jacobson Dec. 31, 1929 10 1,784,572 Brown Dec. 9, 1930 2,066,221 Payne Dec. 29, 1936

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