US2808165A - Hoisting mechanisms - Google Patents

Description

Oct. 1, 1957 D.. l. wElsz HOISTING MEcHANIsMs' 6 Sheets-SheefI l Filed April 23, 1956 INVENTOR:

OGL l, 1957 D. l, wElsz HoIsTING MECHANISMS 6 Sheets-Sheet 2 Filed April 23. 1956 INVENToR.v daag jfforn 0d l, 1957 D. 1. wElsz HoIsTING MEcHANrsMs Filed April 25, i956 6 Sheets-Sheet 5 INVENTOR. ma@

Oct. 1, 1957 D. l. wl-:lsz

HOISTING MECHANISMS Filed April 25, 1956 ATTORNEY.

Oct. 1, 1957 Filed April 23, 1956 D. l. WElSZ HOISTING MECHANISMS ,e6L y 6 Sheets-Sheet 5 ATTORNEY Oct. l, 1957 D. l. wx-:lsz

HoIsTING MECHANIsMs G Sheets-Sheet 6 Filed April 25, 195e Y y me f. zum;

TTORNEY.

2,808,165 HOISTING MECHANISMS Daniel I. Weisz, Ellwood City, Pa., assignor to Beaver- Advance Corporation, Ellwood City, Pa., a corporation of Pennsylvania Application April 23, 1956, Serial No. 579,833 9 Claims. (Cl. 214-630) This invention relates to hoisting structures and particularly to new and novel material hoisting tower, bucket and hopper structures. The latter, when used with the tower, are useful in lifting concrete and placing it at different levels.

During construction of modern buildings large amounts of concrete and other materials are elevated by hoisting towers to various floor levels.

Conventional hoisting towers are made up of separate vertical and horizontal members which are bolted together and reinforced with diagonal bracing members bolted to the vertical members. Vertical guide members are bolted to each side girt in such towers. An elevator cage is used in the tower for hoisting material other than concrete. The cage is raised or lowered in the tower by means of a hoisting engine and cable. Conventional mechanisms for handling concrete consists of a bucket within the tower and a hopper and a chute ixed in the exterior of the tower. An exterior boom overhanging the tower is used to move the hopper and chute lfrom one level to another. To move the hopper and chute requires a separate cable, or as an alternate, the cable can be transferred from the concrete bucket and used t`o move the hopper and chute. Such a transfer, is of course, a time consuming and therefore expensive job.

An object of the present invention is to provide a material hoisting tower which can be erected and dismantled more rapidly than conventional towers and which is more rigid, composed of fewer parts and is considerably safer than such conventional towers.

Another object of this invention is to provide a novel tower mechanism for handling concrete in which the bucket, hopper and chute are within the tower thereby eliminating the overhanging moment on the tower which is common to conventional hoisting towers.

vStill another object of this invention is to provide a tower assembly for hoisting concrete buckets and the like wherein a novel arrangement of leg sleeves, side girts and braces permits rapid assembly of the tower and the use of the same cage size in all tower wells.

A further object of this invention is to provide a hoisting tower, bucket, hopper and chute structure wherein the movement of the bucket, hopper and chute are accomplished without overhanging moment on the tower.

Another object of the present invention is to provide novel means whereby the hoisting tower can be erected safely because of the fact that the leg bolts need not be held in position while the nuts are applied and tightened.

Other objects, advantages and purposes of this invention will be apparent from the consideration of the following description and the accompanying drawings in which:

Figure l is an isometric view of the base part of a hoisting tower forming a part of the present invention.

Figures 2A, 2B and 2C show in enlarged broken isometric views a novel girt and brace assembly used in the present invention.

Figure 3 is an isometric view of the base part of a double well hoisting tower according to this invention.

Figure 4 is a segmentof a double guide end girt used on the hoisting tower of Figure 3.

Figure 5 is a side elevational view of a tower, concrete 2,808,165 latented Oct. `1, 1957 ne FCC. t.

2 bucket, hopper and chute assembly readied to move the hopper and chute.

Figure 6 is a front elevational view from the right of Figure 5 showing the hopper and chute in position to move.

Figure 7 is a side elevation of a tower, bucket and hopper and chute arrangement in position to discharge concrete.

Figure 8 is a top plan view of the tower, bucket and hopper in the position of Figure 5. Y

Figures 9A, 9B and 9C are enlarged isometric views of a hoisting tower according to this invention broken into three segments for ease of illustration.

Figure 10 is an exploded view of the parts entering into each section of the tower of Figures 9A, 9B and 9C.

Figure l1 is a fragmentary exploded view of the base shown in Figure 9A.

Referring to the drawings there is illustrated a tower base 10 made up of I beams and channels to formI a rectangle. A vertical stud 11 is xed at each corner of the base. An end unit is placed on each pair of such studs 11 adjacent the two ends of the base. Each' end unit is made up of a pair of spacedA leg sleeves 12 connected by an'end grit 13 and carrying a guide post 14. Legs`15 are tted 4into the upper ends of each leg sleeve 12. Each leg sleeve 12 is provided with a square holes 12 in the outside .wall and corresponding round holes on the inside wall. Each leg 15 is provided with corresponding round holes. The square h ole 12a receives the head of a bolt 20 to prevent it from turning as Well as clamping the leg against removal from the sleeve. ln addition the sleeve is. prevented from being distorted or collapsed by the pressure of the bolt, when tightening by the nut. Guide members 16 are fitted onto the guide post 14. An end unit is next fitted onto the top of each pair of legs to form the base for a second tier of the tower. Each leg sleeve 12 may be connected to a side girt 17 by bolts as described more Ifully herein below. Each side girt 17 is provided with winged brace members 18 extending alongside the sleeve l2. ,Diagonal braces 19 extend from one leg sleeve 12 to the diagonally opposite sleeve on the next level. Bolts 2G pass through openings in the ends of the diagonal braces 19, the winged brace member 18, the sleeve 12 and legs 15 to hold the entire assembly together as a unit.

When a double well tower (see Figure 3) is desired, double length base members 24 are used on the base. Intermediate legs 21 are secured into leg sleeves, girts 23 and opposed guide posts 24EL and 24b engaging guide posts 24. Intermediate sleeves 22 tit over vertical studs 11 on base member 24 in the same manner as sleeves 12 on base member 10 in single well structures.

Referring to Figures 5 through 8, there is illustrated a one well hoisting tower as described above. A concrete bucket 2S is provided with ways or cage guides 26 which slidably engage the guide members 16. Hoisting means of conventional form (not shown) is connected to the bucket to move it on the guide posts 16. A hopper 27 is fixed on the legs 1S by means of arms 28 pivoted on the sides of the hopper 2.7 .and clamped to the legs 15 (see Figure 7). The arms 28 hold the hopper 27 entirely within the tower. A chute 29 is pivoted to the bottom of the hopper 27 by a pin 30. The chute 29 is held in operative discharge position by a pin 31 passing through rings 32 and 33 on the chute and hopper respectively. Removal of pin 31 permits the chute 29 to depend from the hopper 27 for movement within the tower.

The bucket 25 is provided with lifting brackets 34 (Figure 9B) adapted to receive tubular `lifting arms 34* adjacent the top thereof. These arms 34a are adapted ,to pass through brackets 35 on the sides of the hopper 27, When it is desired to move the hopper 27, vthe arms Y34a are extended through the brackets 35. The pin 31 (Figures 7 and 9B) is removed to drop the chute 29. The arms 28 are unclamped from the legs 15 and pivoted to a position alongside the hopper 27. The bucket 25 is then raised or lowered to place the hopper in desired position. The arms 28 are again clamped to legs l5 by means of clamps 41 at the new position. The chute 29 is raised and pin 31 inserted through rings 32 and 33. The lift arms 34 are then removed from brackets 35 and the tower and equipment are again ready to handle concrete at different levels.

The bucket 25 is provided with a dumping gate 36 held in closed position by resilient latches 37. The hopper 27 is provided with vertical cam arms 38 which lie within the latches 37. When the bucket 25 is raised above the hopper 27 the cam arms 38 spread the resilient latches 37 releasing the gate 36 (Figure 9B) to dump concrete into the hopper. When the bucket 25 is lowered the gate 36 strikes the edge of the hopper and is forced into the closed position as the latches leave the cam arms 38.

The lower end of the chute 29 is provided with a rotary gate 39 (Figure 7) for discharging controlled amounts of concrete into a wheelbarrow, buggy or similar distribution device. The gate 39 is controlled by handles 40 in conventional manner.

While certain preferred forms of this invention are illustrated and described above it will be understood that it may be otherwise embodied within the scope of the following claims.

I claim:

l. A hoisting mechanism comprising a quadrangular base, Vertical studs at each corner of the base, a sleeve on each vertical Stud, an end girt connecting opposite pairs of sleeves, a vertical guide pipe stud intermediate the ends of each end girt, a plurality of tower panels in said sleeves, said panels comprising vertical legs in each sleeve, an end unit on each pair of Vertical legs, each such end unit having a pair of vertical sleeves connected by an end girt and a guide pipe stud intermediate the ends of said end girt, a side girt connecting each pair of sleeves not connected by an end girt, a guide pipe between each pair of guide posts and diagonal bracing members on opposite sides of the tower running in opposite directions, a bucket movable vertically on the guide pipes, horizontally extensible arms on the bucket, a hopper removably mounted within the tower on a pair of vertical legs in a plane of the guide posts, and means on the hopper removably receiving the extensible arms on the bucket whereby the hopper may be moved within the tower.

2. A hoisting mechanism as claimed in claim l wherein each side girt is provided with winged end members bolted to and connecting two adjacent vertical legs.

3. A hoisting mechanism comprising a quadrangular base, vertical studs on each corner of the base, a sleeve on each vertical stud, an end girt connecting opposite pairs of sleeves, a vertical guide pipe stud intermediate the ends of each end girt, a plurality of tower panels in said sleeve` said panels comprising vertical legs in each sleeve, an end unit on each pair of vertical legs, each such end unit having a pair of vertical sleeves connected by `an end girt and a guide pipe stud intermediate the ends of said end girt, a side girt connecting each pair of guide posts and diagonal bracing members on opposite sides of the tower running in opposite directions, a bucket movable vertically on the guide pipes, horizontally extensible arms on the bucket, a hopper removably mounted within the tower on a pair of the vertical legs one in a plane of each of the guide posts, means on the hopper removably receiving the extensible arms on the bucket whereby the hopper may be moved within the tower, said bucket having hinged gate members and vresilient latch means therefore and cam arms on the hopper engaging the latch means whereby to automatically release the gate when the bucket is elevated above the hopper.

4,. A hoisting mechanism comprising a quadrangular hase, a vertical stud at each corner of the base, a sleeve on each vertical stud, an end girt connecting opposite pairs of sleeves, a vertical guide pipe stud intermediate the ends of each end girt, a plurality of tower panels in said sleeves, said panels comprising vertical legs in each sleeve, an end unit on each pair of vertical legs, each such end unit having a pair of vertical sleeves connected by an end girt and a guide pipe stud intermediate the ends of said end girt, a side girt connecting each pair of sleeves not connected by an end girt, a guide pipe'between each pair of guide posts and diagonal bracing members on opposite sides of the tower running in opposite directions, said sleeves having square openings in oneside receiving the head of a fastener belt whereby the bolt is retarded against turning and the sleeve is protected against compression and distortion by undue tightening of the bolt, a bucket movable vertically on the guide pipes, horizontally extensible arms on the bucket, a hopper removably mounted within the tower on a pair of vertical legs, one in the plane of each of the guide posts and means on the hopper removably receiving the extensible arms on the bucket whereby the hopper may be moved Within the tower.

5. A hoisting mechanism comprising a quadrangular base, vertical studs `at each corner of the base, a sleeve on each vertical stud, an end girt connecting opposite pairs of sleeves, a vertical guide pipe stud intermediate the ends of each end girt, a plurality of tower panels in said sleeve, said panels comprising vertical legs in each sleeve, an end unit on each pair of vertical legs, each such end unit having a pair of vertical sleeves connected by an end girt, a side girt connecting each pair of sleeves not connected by an end girt, a guide pipe between each pair of guide posts and diagonal bracing members on opposite sides of the tower running in opposite directions, said sleeves having square openings on one side and round holes on the opposite sides, said square openings adapted to fully receive the square head of a fastening bolt to prevent it from turning when tightening whereby the legs are tightened against removal from the sleeve from the interior of the tower, a bucket movable vertically on the guide pipes, horizontally extensible arms on the bucket, a hopper removably mounted within the tower on a pair of vertical legs one in the plane of each of the guide posts, and means on the hopper removably receiving the extensible arms on the bucket whereby the hopper may be moved within the tower.

6. A hoisting mechanism as claimed in claim 4 wherein the horizontally extensible arms on the bucket are pieces of pipe slidable in cylindrical sleeves, one on each side of the bucket and the means on the hopper removably receiving the extensible arms is a pair of cylindrical sleeves, one on each side of the hopper.

7. A hoisting mechanism as claimed in cla-im 4 wherein the hopper is provided with a pair of spaced arms hinged to each side for movement transverse to the vertical legs of the panel and clamps 'at the end opposite the' hinge adapted to removably engage the vertical legs.

8. A hoisting mechanism as claimed in claim 1 wherein the horizontally extensible arms on the bucket are pieces of pipe slidable in cylindrical sleeves, one on each side of the bucket, and the means on the hopper removably receiving the extensible arms is a pair of cylindrical sleeves, one on each side of the hopper.

9. A hoisting mechanism as claimed in claim l wherein the hopper is provided with a pair of arms hinged to each side for movement transverse to the vertical legs of the panel and clamps at the end opposite the hinge adapted to removably engage the vertical legs.

References Cited in the tile of this patent -UNlTED STATES PATENTS 911,883 Joseph Q June 3, 1908 1,853,085 Scannell Mar. 11, 1929 1,870,962 Oldtoyd Oct. 7, 1929

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