US2828869A - Hoist for building sections - Google Patents

Description

April 1, 1958 G. c. coRLEY 2,828,869

HoIsT FOR BUILDING SECTIONS Filed April 15, 1952 7 sheets-sheet 1 i /76 if f INVENToR.

@de C. COT@ BY l April 1, 1958 G. c. coRLEY HOIST FOR BUILDING SECTIONS '7 Sheets-Sheet. 2

Filed April 15, 1952 INVENTOR. Egal@ C. Cor@ April 1, 1958 G. c. coRLEY 2,828,869

HOIST FOR BUILDING SECTIONS Filedl April l5, 1952 '7 Sheets-Sheet 5 INVEN TOR.

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April 1, 1958 G. c. CORLEY HOIST FOR BUILDING SECTIONS Filed April 15, 1952 7 ysneaks-shew 4 Pll l, 1958 G. c. coRLEY l 2,828,869

i-IoIsI FOR BUILDING SECTIONS 7 Sheets-Sheet 5 Filed April 15, 1952 JNVENTOR.

89a@ C for@ April l 1958 G. c. coRLEY 2,828,869

HOIST FOR BUILDING SECTIONS Filed April l5, 1952 7 Sheets-Sheet 6 ggf@ IN V EN TOR.

BYQZQ C. Cor@ April 1, 1958 v G. c. coRLr-:Y

HoIsT FOR BUILDING SECTIONS 7 Sheets-Sheet '7 Filed April 15, 1952 1NVENToR. Gale .C

Carly!" United States Patent O HOIST FR BUILDING SECTNS Gale C. Corley, Valparaiso, Ind.

Application April l5, 1952, Serial No. 232,594

15 Ciaims. (Cl. 214-1) This invention relates generally to the construction of prefabricated buildings, and more particularly to methods and apparatus for positioning Prefabricated building panels to facilitate assembly thereof into a building.

in order to facilitate the construction of buildings and to reduce the time and cost of such construction, it has been proposed to use sections or panels which are tirst fabricated and then moved to the building location, with the sections being assembled at the location. In such construction the walls, ceiling, and roof may each be formed of prefabricated sections which are joined together on a foundation at the desired location. Such construction permits fabrication of the panels or sections in factories by mass production methods permitting the ellicient utilization of labor and the use of more eicient equipment, to thereby reduce the cost of a panel and at the same time maintain high quality. It is desirable to keep the number of panels low, both in order to permit rapid assembly of the structure and also because this provides a better construction. Accordingly, the individual panels used may be as large as 8 to l0 feet wide and as much as i6 to 20 feet long. It will be apparent that the handling of such panels poses quite difficult problems.

It is, therefore, an object of the present invention to provide an improved construction for buildings formed of large prefabricated panels.

A further object of this invention is to provide a method of positioning large building panels used to construct the walls, ceiling and roof of a building which requires a minimum number of men and reduces the time required for the construction.

A further object of this invention is to provide improved apparatus for handling large prefabricated sections used for construction of a building, for moving the scetions from a truck or other position of storage to the final position of the panels in the assembled building.

A still further object of this invention is to provide a hoisting truck for lifting the panels, tilting the same to various positions, raising the panels to the desired level in various positions, and generally positioning the panels in the desired positions in the building.

A feature of this invention is the provision of a building construction method whereby two men can move a plurality of panels at once from a truck or other storage position to the building site, move the panels singly to the precise positions in which they are to be used, and tix the panels in such positions. According to the method, all of the panels required for a complete building may be assembled by only two men, including the ceiling and roof panels.

A further feature of this invention is the provision of a hoisting truck for handling large prefabricated panels or sections, which truck lifts individual panels from a vertical position and moves the panels to various horizontal, vertical and angular positions without damaging the same. The hoist includes adjustable raising and tilting means, means for connectionY to the panels at a balance point thereon, and roller means for bearing against the panels to prevent damaging of the same.

` Patented Apr. 1, 1958 Still another feature of the invention is the provision of apparatus for moving a roof panel over the ceiling of a building to the desired location and adjusting the position of the panel thereon as desired.

Further objects and features and the attending advantages of the invention will be apparent from a considera. tion of the following description when taken in connection with the accompanying drawings in which:

Fig. l is a perspective view illustrating the use of carts for moving a plurality of panels and the tilting hoist truck for positioning individual panels;

Fig. 2 illustrates the tilting hoist truck holding a single panel;

Fig. 3 shows the tilting hoist truck holding a panel in tilted position;

Fig. 4 is an elevation view showing the construction of the tilting hoist truck;

Fig. 5 is an end View of the tilting hoist truck;

Fig. 6 is a top view of the tilting hoist truck;

Fig. 7 is a fragmentary detail View of the hoist truck;

Fig. 8 illustrates the details of the hoisting device;

Fig. 9 is a cross sectional View along the lines 9 9 of Fig. 5;

Figs. l0 and 1l illustrate hanger structures for securing panels to the hoist; l

Fig. l2 illustrates the hoist truck with the tilting portion in two vertical positions;

Fig. 13 illustrates the hoist truck as used for removing panels from a delivery truck;

Fig. 14 illustrates the handling of roof panels by the hoist truck;

Fig. l5 further illustrates the handling of roof panels;

Figs. 16 and 17 illustrate the raising of roof panels to a desired position;

Figs. 18 and l9-illustrate the detail construction of the panel carts shown in Figi; and

Figs. 20 and 2l illustrate in detail the construction and mounting of the casters 0f the hoist.

In practicing the invention there is provided an improved construction of buildings formed of large Prefabricated sections or panels. These sections or panels may be hauled from a factory to the building location in a large delivery truck. The panels may then be removed'from the truck and installed in place and assembled together by only two men working for a relatively short period of time. Hoisting carts are provided which may be secured to the ends of a plurality of sections for moving the sections as a group from the truck to the foundation for the building, or any other suitable position at the building location. Individual panels may then be moved to their precise position in the assembled building by a tilting hoist truck. This truck lifts the panel ata balance point, and may move the same to the desired horizontal position and then lower the panel to the precise location where it is to be used. This hoist truck holds the panel in position while it is anchored, either to brace supports or to other panels, to provide the complete building assembly. The hoist truck operates to move a panel in a vertical position or to tilt the same as various angles or to a horizontal position, and may raise or lower the panel when in a horizontal position to facilitate positioning Aof ceiling panels or the like.

Various lixtures may be provided for the hoist truck for attachment to panels of dilerent constructions.- The hoist includes rollers for engaging the panels in various positions so that the panels are Inot damaged in any way in the lifting and moving operation. The construction in accordance with the invention also permits easy positioning and assembly of the roof panels of the building after the ceiling panels are supported in place. The tilting hoist may be used to transfer the panels from a vertical to a horizontal position and to raise the same to a level above the ceiling. The panels can then be pulled Y'asf/.18,1369

olf the hoist by means of the rollers thereon onto a roller cart on the ceiling. The roller cart can be used to move the *panels to the desired position on the ceiling, and the panels can then be set at the desired angle by means of jacks which cooperate with the roller cart for positioning the roof panels above the ceiling.

Referring now to the drawings, 1n Fig. l there is illustrated a plurality of prefabricated panels or sections 25 which are supported on carts 26 at either end thereof. These carts have horizontal axles 27 supported by wheels 28, and vertical members 29 with crossbars 30 supported thereon. The panels 25 are secured to the carts by connection of the ends thereof to the crossbars 30. Handles 31 are provided to facilitate moving the carts with the panels supported thereon. The vertical shaft 29 includes a jack arrangement for raising and lowering the same so that the panels may be picked up from a supporting surface such as the oor of a delivery truck, and moved by the carts as required to the location at which the panels are to be assembled.

In Figs. 18 and i9 the details of one embodiment of a panel cart are illustrated. The jack illustrated is of the hydraulic type, with the vertical member 29 being in the form of a hollow cylinder having a plunger 32 moving vertically therein. The plunger 32 is anchored to the horizontal axle 27 of the cart. Some liquid material is provided in the cylinder 29 and is pumped into the space between the top of the plunger 32 and the valve structure 33 xed to the cylinder to raise the tubular member 29 with respect to the plunger 32. The liquid material is pumped by reciprocal up and down action of the cap 34 which has secured thereto a piston 35 operating in a cylinder 36 secured to the valve structure. Movement of the piston 35 in the cylinder 36 is effective to pump the liquid from the space above the fixed valve structure 33 into the space below the lixed valve structure 33 and thereby raise the jack. The valve structure 33 also permits the liquid to flow back above `the valve structure when the cap 34 is pushed all the way down. As clearly shown in Fig. 19, the crossbars 30 are secured to the ver tical member 29 by arms 37 and 38 and may be attached to the panels 25 by nails 39 or other suitable means. The hydraulic structure illustrated is in itself known and commercially available and is merely shown as illustrative of jack structures which are suitable for this purpose.

After the panels are moved adjacent the assembly location, which may be a foundation previously prepared, they are individually moved by the hoist truck 40. The hoist truck includes a rectangular base structure 41 which may be formed of angle iron, with casters 42 supporting the same from a horizontal surface and permitting horizontal movement of the truck. The truck includes an inner frame 43 (best shown in Figs. 8 and l2) which telescopes vertically within the base structure and which supports at the top thereof the tilting frame 44.

The vtilting frame 44 includes a jack 46 having a lixture 45 at the top thereof adapted to be secured to a building panel at a balance point thereof. Various difierent fixtures for this purpose are illustrated in Figs. 5, l and 11. The jack 46 is effective to raise and lower the fixture to permit attachment thereof to the panel and to raise the panel for moving the same. Fig. 2 illustrates the use of a hoist for moving a panel, and it will be apparent that the panel can be moved to various positions on the foundation by the hoist and supported thereby while the panel is being anchored in position.

For positioning ceiling panels it is necessary to iirst `turn the panel from a vertical to a horizontal position. This is achieved by the tilting frame 44` The jack 46 of the tilting frame will lift the panel to a position so that the central portion of the panel (vertically) is adjacent the top edge ofthe inner frame, at which point a roller 69 is provided which bears against the panel (Figs. 5 and l3). The panel may therefore be tilted back to a horizontal position and can then be raised by upward movement of the inner frame to a position above the side walls of the building. This is illustrated by Figs. 3 and l2, with the panel 5) being shown in a tilted position in Fig. 3 and in horizontal positions in Fig. l2. Fig. 12 shows the panel in the lowest position in which the inner frame is at its lowest point, and in an elevated position wherein the ceiling panel 50 is above the edge of the wall panel 25. For controlling the tilted position of the frame 44, a screw 47 is provided.

For a more detailed consideration of the tilting hoist structure, reference is made to Figs. 4 to l2 inclusive. As previously stated, the base structure 41 is of a rectangular configuration and includes frame members which may be angle iron or the like. Crossframes and corner plates 56 may be provided for strengthening the frame. On the back side a ladder portion S7 is provided which permits the operator to climb up on the hoist for operating the jack 46 as will be explained more in detail.

As previously stated, the hoist is supported by casters 42. These casters may be provided on arms 58 pivotally secured to brackets 59 secured to the main frame members of the base 41. By using such pivoted arms having a substantial extent, a wider supporting base may be provided for the truck to render the same more stable when handling a large panel or section. The supporting pin 60 secured to the bracket 59 may be iixed, and holes may be drilled through the arm 58 and pin 60 so that the arm 58 may be anchored in various desired positions by the pin 61. This is best shown in Fig. 20. This arrangement permits pivoting the arms 58 to positions such that the overall width or length of the hoist is kept to a minimum. This facilitates storing of the hoist or moving it through doorways or the like. The casters may include locking provisions so that rolling thereof is prevented when it is desired to hold the base steady in a lixed position.

The detail construction of the casters is illustrated in Figs. 20 and 2l. The casters include vertical Shanks 51 adapted to be secured in vertically extending openings in the arm 58. Secured to the shank 51 is an annular bearing plate 54. Pivotally mounted to the shank 51 and bearing plate 54 are U-shaped brackets 52 which support the wheels proper 53 of the casters. Ball bearings may be used to provide free movement of the bracket 52 with respect to the bearing plate 54 which may be rigidly secured in the arm 58 through the shank 51. In order to prevent rotation of the bracket 52 with respect to the bearing plate 54, and also to prevent rotation of the wheel 53, so that the hoist will be iirmly held in a stationary position, a locking shoe 62 may be provided. This shoe has a top end bearing against the plate 54 and a bottom end bearing against the outer surface of the wheel 53. The locking shoe 62 may be caused to firmly engage the plate 54 and the wheel 53 by operation of an arm 63 having a cam surface 64 thereon which bears against the locking shoe 62 to hold the same firmly against the plate 54 and the wheel 53. It is to be pointed out that the caster structure illustrated in Figs. 20 and 21 is a commercially available structure and is used merely to illustrate one form of caster structure which is suitable for use in the hoist in accordance with the invention.

As previously stated, an inner frame structure 43 is provided which telescopes vertically within the outer frame or base 41. This inner frame may also be formed of angle irons and may include a top rim 65 which extends above the rim 66 of the base structure. The inner frame may also include reenforcing corner plates 56 to render the same more rigid. The vertical members 67 of the inner frame at the back side thereof extend slightly above the top rim 65, and secured to these projecting por- `tions and the rim 65 are mounting portions 68. These portions support the roller 69 and also the tilting frame 44. Mounting brackets 70 are provided along the sides of the top rim 66 for supporting side rollers 71. These side rollers 71 are mounted slightly higher than the roller 69, so that a panel supported horizontally on the hoist truck may be easily pulled ol horizontally by action of the rollers. Locking means may be provided for the rollers to provide a more steady support for a panel thereon, when this is desired. Such locking means may be provided, for example, by a pin 72 adapted to be inserted in openings in the rollers 71 and the supporting shaft 73 therefor as indicated in Fig. 9.

Considering now the arrangements for lifting the inner frame 43 within the base or outer vframe 41, reference is made to Figs. 5, 6 and 8. A shaft 75 extending across the truck is mounted in bearings on the side frames 76 of the main support 41. The shaft 75 carries drums '77 and 78 at the ends thereof and a crank 79 which extends outside the base frame, as clearly shown in Fig. 4. Cables are secured to and wound around the drums 77 and 78 and extend over pulleys 80 secured to the base structure, and continue around pulleys 81 at the bottom of the inner frame and are anchored to the base structure at 82 just below the pulleys 80. It is therefore seen that as the cable is wound up on the drums 77 and 78, the pulleys S1 will be lifted and thereby lift the inner frame. A toothed Wheel 83 is provided on the shaft 75 as clearly shown in Fig. 8 and a detent nger 84 bears against the wheel to hold the shaft in ixed position so that the inner frame can be held in any desired position. The finger 84 may be moved out of the way to prevent lowering of the inner frame when this is desirable. The position of the pulleys 80 and 81 are such that at the topmost position the pulleys S1 engage pulleys 80, and the inner frame is held lirmly to the base structure and cannot tip over.

It is to be pointed out that various other means may be provided for operating the inner frame. It may be desirable to provide positive action for lowering the inner frame, as well as for raising it.

As previously stated, the tilting frame 44 includes a jack 46 so that the fixture secured to the top of the frame may be raised or lowered as desired. This jack may be or" the type generally used for lifting automobile bumpers, for changing wheels or the like, and includes a rack 90 rigidly secured to the frame 44 and a shaft 91 movable with respect to the rack. The shaft 91 extends through sleeve 92 at the top of the tilting frame and is secured at the bottom to the jackslide 93 which operates on the rack 90. The jackslide 93 includes a handle 94 for moving the same with respect to the rack 90. This handle extends toward the front side of the truck so that the operator can reach the same. As the handle 94 moves upwardly with the jackslide, it may be necessary for the The tilting frame 44 is pivotally supported on the t mounting portions 68 of the inner frame 43. The position of the frame is controlled by the screw 47. This screw is rotatably connected to a sleeve 95 which is pivotally supported by the frame 44, being pivotedto the brace members 96 thereof. The screw is threaded in a sleeve 97 which is pivotally supported by brace members 98 (Fig. 6) of the inner frame 43. A crank 99 is provided on the end of the screw 47 so that the position of the tilting member can be easily adjusted.

The fixture 45 at the top of the jack on the tilting frame may be of various different configurations for different applications. As shown in Figs. l to this is a simple finger projecting outwardly from a cap 100 positioned on the end of the shaft 91 of the jack. The finger extends backwardly and downwardly and has a hook on the end so that it may be positioned in an opening 101 in a crosspiece 102 of the panel being held thereby. This opening 101 is positioned at a balance point so that the panel may be lifted uniformly by the hoist and jack.

In Figs. l0 and 1l other forms of fixtures are shown,

with the fixture of Fig. l0 being suitable for use on a ceiling panel or roof panel having frame members projecting from one side thereof; In a wooden construction these frame members might be two-by-fours which render the panel strong and rigid. Figs. 3, 12 and 13 illustrate the use of a fixture such as shown in Fig. `l0. This fixture has a cap 105 similar to the cap 100 of Fig. 5, which is adapted to lit on the top of the rod 91. A rod extends backwardly from the cap 91 and downwardly to a bracket 106. A clampscrew 107 is provided for fastenthe bracket rigidly to a portion of the panel.

The structure of Fig. l1 is generally similar to the structure of Fig.V 5 except that a cross piece 109 is provided having a pair of fingers 110 at each end thereof. This construction would provide a more steady support for a long panel, and would not be as critical as to the position of attachment as a single finger vwhich must be secured very accurately at the balance point.

As previous-ly stated, the tilting hoist truck is used for positioning wall panels, ceiling panels and roof panels. lt is believed that from the foregoing description of the hoist itself, and from a consideration of Fig. 2 it will be clear how the hoist is used for wall panels, to set the same in the desired positions and hold the panels while they are anchored. When handling roof panels, these panels may be lifted in the manner indicated in Fig. 5 until the roller 69 is substantially at the midpoint vertically of the panel. Then the panel is tilted over by action of the frame 44 and roller 69 to a horizontal position as illustrated in Figs. 3 and l2. The panel may then be raised to a level above the side walls 2S as shown in solid lines in Fig. l2, and moved to the desired horizontal position. The panel may then be lowered to rest on the side Walls 25, with the hoist being further lowered and removed out of way. It is therefore seen that the hoist will position ceiling panels in the final desired position.

For positioning roof panels, an arrangement may be used as illustrated in Figs. 14 and l5. It is necessary to provide a platform adjacent the outside of the building, and this may be accomplished by the use of a bottom-hinged delivery truck door as indicated at 115. This door is supported adjacent the building by jacks 116, which may be of standard construction. The panels are picked up by the hoist, tilted over and elevated to a vertical position above the walls and ceiling of the building. The hoist truck then is moved -to the edge of the building so that the panel extends above and partly over the ceiling. It is noted that the panel is positioned with the brace members 112 (two-by-fours) extending downward since the top surface of the roof must be weatherproof and will usually be substantially flat. These brace members are supported on the-rollers 71 on the ends of the hoist so that the panel may be easily rolled oli` of the hoist. This is illustrated in Fig. 15 wherein the panel 114 is shown being pulled forward onto a roller cart 116 which is supported on the ceiling of the building.

Since the top surface of the ceiling is not a flat surface but has brace members extending upwardly therefrom, it is necessarythat the cart 116 include a large number of rollers 113 which form a substantially continuous bearing surface. In order to increase the maneuverability of the cart, it is preferable to have a large number of separate rollers rather than one long roller, and it may be desired to provide a large number of rollers such as skate rollers which are commercially available. The panel 114 will be pulled forward on the end rollers 71 of the hoist until it extends adjacent the handle 117 of the roller cart. This handle may have a pivoted top member 118 which can be turned to prevent the panels from tipping backward off the cart. When a panel is positioned on the cart, it may be moved over the top surface of the ceiling to the desired position.

7 As illustrated inV Fig. 16, the cart may move the roof panel 114 to a position wherein the edge sets in a groove 119 in the projecting edges 120 of the ceiling. The

otherV end of the roof panel may be supported by a jack 121 which may lift the roof panel 114 to a position wherein the cart 116 may be pulled out of the way. The panel 114 may be lowered to a position in engagement with a corresponding roof panel 114:1 on the other side of the building. This second roof panel may be supported by a second jack 121a so that the two panels may be properly positioned and adjusted for anchoring together in a fixed position. It is to be pointed out that the construction in accordance with the invention is not limited to the particular structural embodiments shown.

In Fig. 17 the jack 121 is shown more in detail. The two ends of the jack include cross pieces 122 and 123 respectively which are wide enough to span a pair of frame members on the roof panel and on the ceiling panel respectively. These sections have teeth formed thereon so that they will remain in the desired position and will not slide with respect to the roof and ceiling panels. The jack shown has a crank and screw type of drive, but it is obvious that various other types of drives may be used.

The Fig. 13 illustrates a feature of the hoist which facilitates handling of ceiling and roof panels thereby. In many instances there is not suicient room on the delivery truck in which the panels are transported to permit the panel to be picked up by the hoist in the delivery truck and tilted directly to a horizontal position. In such case the panel may be tilted4 partially and then raised above the edges of the truck (or other projection), and after the edges are cleared, the panel can then be laid dow-n horizontally and further moved as desired.

It has been found that by using the construction described it is possible to erect an average size home of six rooms or so by two -men in a single day. Previously a larger number of men was required, because the panels were so large and heavy that two men could not handle the same. Further, a greater number of total man hours was required since the handling was so much more difficult. Still further, the disclosed construction results in complete elimination of any lifting operations by the men themselves so that their Work is made -much easier.

The improved construction obviously reduces the cost of the completed building because of the reduction in labor. It also results in other advantages which facilitate the use of prefabricated constructions. two men can go to a job with a truck containing the various building panels required. These two men can without other help completely assemble the house in one day and then return, ready to set up another house the next day. Thus full advantage can be taken of the skill of men who have been trained to set up the Prefabricated buildings.

Although certain embodiments of the invention have been illustrated, it is obvious that various changes and modications can be made therein within the intended scope of the invention. The means vfor raising the inner frame, tilting the same, and raising the jack have all been illustrated as manually operable means. It is obvious, however, that the operation of the hoist can be made easier by the use of mechanical driving means such as hydraulic means, pneumatic means, or electrical means. For example, pneumatic means might be used with a tank of Acompressed air provided on a suitable platform on the hoist. Alternatively, hydraulic means could be used with a. pump provided on the hoist operated by a battery driven electric motor. Further, it would be entirely practical to use electric motors operated by storage batteries to directly operate the hoist structure.

It is therefore intended to cover all such modifications As an example,

of the structure, within the scope of the appended claims.

I claim:

l. -A hoist for handling large flat Prefabricated 'building sections including in combination, a base structure, caster means for supporting said base structure, a rigid frame structure telescopingly positioned with respect to said base structure, means for moving said frame structure vertically with respect to said base structure, a swinging frame pivotally secured to said frame structure on a horizontal axis and extending above said frame structure, said swinging frame being mounted for movement from a horizontal to a vertical position, a jack included on said swinging frame and extending from the portion of said swinging frame adapted to be pivoted to an upward position, means on said jack adapted to be attached to a building section, and roller means along the lowermost edge of said swinging frame and cooperating with said swinging frame yfor tilting a building section supported on the hoist.

2. A hoist for handling large tlat prefabricated building sections including in combination, a base structure, caster means for supporting said base structure, a frame structure telescopingly positioned with respect to said 'base structure, means for moving said frame structure vertically with respect to said base structure, a swinging frame pivotally secured to said frame structure on a horizontal axis and extending above said frame structure, said swinging frame being mounted for movement from a horizontal to a vertical position, a jack included on said tilting frame and extending from the portion thereof which is at the top when said swinging frame is in a vertical position, means on said jack adapted to be attached to a building section, and roller means mounted along the edge of said swinging frame which is lowest when said swinging frame is in vertical position and on a horizontal axis substantially parallel with the horizontal pivotal axis of said swinging frame, said tilting frame and said roller means cooperating to tilt a building section supported on the hoist.

3. A hoist for handling large flat prefabricated building sections including in combination, a rectangular base structure, caster means for supporting said base structure, a frame lstructure telescopingly positioned with respect to said base structure, means for moving said frame structure vertically with respect to said base structure, a tilting frame pivotally secured to said frame structure along one horizontal edge thereof and extending above said frame structure, means on said tilting frame adapted to be attached to a building section, first roller means on said frame structure along said horizontal edge cooperating with said tilting frame for tilting a Ibuilding section supported on the hoist, and second roller means extending horizontally along the ends of said frame structure and substantially at right angles to said rst roller means, said second roller means extending slightly above said first roller means and facilitating movement of a building section from the top of the hoist.

4. A hoist for handling large fiat prefabricated building sections including in combination, a rectangular base structure, a tilting frame pivotally secured to said base structure along one horizontal edge thereof and extending thereabove, means on said tilting frame adapted to be attached to a building section, first roller means on said frame structure along said horizontal edge cooperating with said tilting frame for tilting a building section from a vertical position to a horizontal position on the top of the hoist, and second roller means extending horizontally along the ends of said frame structure and substantially at right angles to said rst roller means, said second roller means extending slightly above said rst roller means and thereby supporting a panel positioned horizontally on the hoist, and facilitating movement of a building section from the top of the hoist. Y v

5. A hoist for handling large flat Prefabricated building sections including in combination, a rectangular base structure, caster means for supporting said base structure, a frame structure telescopingly positioned With respect to said base structure, means for moving said frame structure vertically with respect to said base structure, a tilting frame pivotally secured to said frame structure along one horizontal edge thereof and extending above said frame structure, means on said tilting frame adapted to be attached to a building section, first roller means on said frame structure along said horizontal edge cooperating with said tilting frame for tilting a building section supported on the hoist, second roller means extending horizontally along the ends of said frame structure and substantially at right angles to said first roller means, said second roller means extending slightly above said first roller means and facilitating movement of a building section across the top of the hoist, and means for preventing rotation of said second roller means.

6. A hoist for handling large at prefabricated building sections including in combination, an outer base structure, an inner frame structure telescopingly positioned with respect to said outer base structure, means for moving said inner frame structure vertically on said base structure, a tilting frame pivotally secured to said frame structure and extending above said frame structure, said tilting frame being mounted for movement from a substantially horizontal position to a substantially vertical position, and jack means on said tilting frame and extending from the portion of said tilting frame which is at the top when said tilting frame is in a vertical position, said jack means including a portion adapted to be attached to a building section.

7. A hoist for handling large flat prefabricated building sections including in combination a rectangular base structure, a plurality of casters supporting said base structure, a plurality of arms pivotally connected to said basey structure and extending outwardly therefrom and indi- :idually connected to said casters for providing a broader support base for said base structure, means for fixing the angular position of said arms with respect to said base structure, a frame pivotally secured to said base structure along a horizontal axis and extending above said base structure, and jack means on said frame including a portion adapted to be attached to a building section, said frame being mounted for movement from a horizontal to a vertical position and said portion of said jack means extending from the portion of said frame which is at the top thereof when said frame is in the vertical position, whereby said frame and jack means is adapted to move a large building section from a horizontal to a vertical position.

8. A hoist for handling large flat building sections including in combination, a base structure, caster means secured to said base structure to permit movement thereof over a horizontal surface, rigid telescopic means secured to said base structure and having a portion movable vertically with respect thereto, a swinging frame pivotally secured to said movable portion of said telescopic means along a horizontal axis, said swinging frame being movable from a substantially horizontal position to a substantially vertical position, a jack secured to said swinging frame having an adjustable portion extending from the portion of said swinging frame which is uppermost as said frame is moved to the vertical position and adapted to support a building section therefrom, and roller means positioned along the lowermost edge of said swinging frame to engage the building section supported on said jack for tilting the building section in response to pivotal movement of said swinging frame.

9. A hoist for handling large at prefabricated building sections including in combination, a base structure, said base structure including caster means for permitting movement thereof over a horizontal surface, said base structure including rigid telescopic means having a portion movable vertically, a swinging frame pivotally secured to said movable portion of said telescopic means along a horizontal axis, a jack secured to said swinging frame having a portion movable in a plane perpendicular to said axis, :said movable portion of said jack including means extending above said swinging frame for supporting a building section therefrom, and roller means positioned along the lower edge of said swinging frame to be engaged by the building section supported on said jack so that the building section tilts thereabout in response to pivotal movement of said swinging frame.

10. A hoist for handling large at Prefabricated building sections including in combination, a base structure, said base structure including caster means for permitting movement thereof over a horizontal surface, said base structure including telescopic means having a portion movable vertically, a swinging frame pivotally secured to said movable portion of said telescopic means along a horizontal axis, said swinging frame being movable from a substantially horizontal position to a substantially vertical position, and jack means secured to said swinging frame having a portion adjustable in a plane perpendicular to said axis, said adjustable portion of said jack means extending from the portion of said swinging frame which is uppermost when said frame is in the vertical position and including means for supporting a building section therefrom.

11. A hoist in accordance with claim l() wherein said adjustable portion of said jack means includes a finger for engaging the building section at the balance point thereon.

l2. A hoist in accordance with claim l0 wherein said adjustable portion of said jack means includes clamp means for engaging the building section.

13. A hoist in accordance with claim l0 wherein said adjustable portion of said jack means includes plurality of ngers for engaging the building section at a plurality of spaced points thereon.

14. A hoist for handling large flat building sections including in combination, a base structure, caster means secured to said base structure to permit movement thereof over a horizontal surface, rigid telescopic means secured to said base structure and having a portion movable vertically with respect thereto, a swinging frame pivotally secured to said movable portion of said telescopic means along a horizontal axis, said swinging frame being movable about said axis from a substantially vertical position to a substantially horizontal position, jack means secured to said swinging frame having an adjustable supporting portion extending from the portion of said swinging frame which is uppermost as said frame is moved to the vertical position, said supporting portion being adapted to support a building section therefrom, and roller means positioned along the lowermost edge of said swinging frame to engage a building section supported on said supporting portion as said swinging frame is pivoted from a vertical position toward said horizontal position.

l5. A hoist for handling large flat building sections including in combination a base structure including caster means for providing movement of the hoist over a horizontal surface, said base structure including vertically extending telescopic means having a movable supporting portion, said telescopic means including means for moving said supporting portion vertically, a swinging frame pivotally secured to said supporting portion along a horizontal axis, said swinging frame being movable from a substantially vertical position to a substantial horizontal position, jack means secured to said swinging frame having an adjustable portion extending from the portion of said swinging frame which is uppermost when said swinging frame is in the vertical position, said adjustable portion including means for connection to a building section, and means forming a bearing surface on said swinging frame adjacent the part thereof which is lowermost when said swinging frame is in the vertical position, said swinging frame being operable to tilt a building section connected to said adjustable portion with said bearing surface engaging the section. j

(References on following page) References Ctedrin the le of this patnt UNITED STATES PATENTSV n 12 'Baker et a1 Dec. 28, 1943V Roberson Dec. 12, 1944 Kittel Feb. 26, 1946 Foster June 15, 1948 Davis Mar. 22, 1949 Stephenson et a1 Sept. 26, 1950

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