US2830720A - Automatic bucket dumping hoist - Google Patents

Description

April 15, 1958 c. c. FIGGE ,8 0,720

AUTOMATIC BUCKET DUMPING HGIST Filed May 9, 1956 2 Sheets-Sheet 1 CARROLL G F/GGE ZQMwaM ATT'Y April 15, 1958 c. c. FIGGE AUTOMATIC BUCKET DUMPING HOIST 2 Sheets-Sheet 2 Filed May 9, 1956 CARROLL 6. F/GGE ATT'Y United States Patent AUTOMATIC BUCKET DUlVIPlNG HOIST Carroll C. Figge, Batavia, Ill.

Application May 9, 1956, Serial No. 583,732

Claims. (Cl. 214-623) This invention relates in general to a hoist and is more particularly described as an automatic dumping hoist for use in building operations and by roofers although it may have a more general use wherever applicable.

In an ordinary hoist for temporary uses for building, roofing and the like, it is current practice to equip a projecting beam with a pulley and to raise materials in a bucket or sling or at the end of a rope to the desired height. Workmen at the upper level reach out and pull the raised material inwardly through a window or other opening or at the top of a roof. This practice is not only dangerous for the workmen at the upper level, but it is also hazardous for the workmen at the lower level who may be filling the buckets or other containers and operating the hoisting rope.

The present invention overcomes the above objections by providing a tilting support at the upper level which allows a bucket or other load to be raised past the support and then lowered down upon the support either to automatically dump the contents or rest it upon a platform which is movable inwardly by a workman at the upper level without leaning over to grasp the raised material, and thus to conduct the material safely to the in terior of the opening or building.

Animportant object of the invention is to provide an automatic tilting platform in connection with a hoist which allows material to be raised above the hoist and then to be lowered thereon either in tilting or level positron.

A further object of the invention is to provide means above the tilting platform for engaging a bucket or other discharging container for positively tilting it and automatically discharging the contents of the bucket upon the platform.

Still a further object of the invention is to provide a platform for receiving material raised at the outside of a building and moving the platform inwardly where it is more easily accessible.

Still a further object of the invention is to provide an automatic dumping hoist in connection with an inclined platform or chute so that material may be raised and dis charged on the platform and into a receptacle such as a wheelbarrow at the inner end of the platform without the attention of a workman at the upper level.

Still a further object of the invention is to provide a movably mounted plat-form for a hoist at the outer end of a platform which may be moved inwardly and inclined at the inner end to discharge material from the platform to a lower level.

A further object of the invention is to provide a movable platform for a hoist which may be positioned at different inclinations and moved endwise to automatically receive a load at one end and moved endwise in the other direction to discharge material from the platform.

A further object of the invention is to provide a hoist of this kind having supporting beams and connecting parts which may be folded compactly together for transporting 2,830,720 Patented Apr. 15, 1958 "ice the hoist from one place to another and for raising and lowering it to the location in a building where it is used.

Other objects of the invention will appear in the specification and will be more apparent from the accompany ing drawings in which,

Fig. l is a perspective view of an automatic hoist in accordance with this invention as located upon a roof.

Fig. 2 is an enlarged perspective view of the material receiving platform.

Fig. 3 is a somewhat diagrammatic and fragmentary view illustrating the operation of a filled receptacle with the inclined platform.

Fig. 4 is a somewhat diagrammatic view showing the tilting action of a receptacle following the stage shown in Fig. 3.

Fig. 5 is a somewhat diagrammatic view showing the.

filled receptacle in connection with a horizontal receiving platform in its upward movement.

Fig. 6 is a somewhat diagrammatic figure illustrating the operation of a filled receptacle in its downward move ment following the stage shown in Fig. 5; and

Fig. 7 is a fragmentary side elevation showing the loading platform discharging a receptacle from its inclined inner end.

In this invention, there is a movable platform which may be set at diiferent angular positions and has hinged sections movable either into the path of hoisted material to receive it, or at an angle at the inner end of the plat form to assist in discharging material therefrom. In any adjusted position of the platform, it may operate to receive hoisted material automatically and discharge it from the platform automatically, or the operation may be assisted by a workman who is not required to lean outwardly from the building or the supporting means for the hoist to direct the hoisted material inwardly, and thus he is not subjected to the danger of falling or being burned by hot material, and the material is handled and discharged more quickly and without danger to the workman or loss by spillage of the material itself.

Referring now more particularly to the drawings, anautomatic hoist in accordance with this invention is shown on a roof although the same construction might be used at any floor level, projecting through a window,

a door or any other suitable opening.

This hoist comprises an inclined supporting beam 10 which extends at its outer end beyond the side of a building or over a parapet 12 of a roof 14. At the outer overhanging end of the beam is a pulley 16 secured thereto having a cable 18 extending around the pulley for raising an open receptacle 20 by means of a pivoting ball 22.

To support the beam 10, braces 24 are inclined angularly outward at both sides of the beam from a point near the outer end thereof depending upon the amount of overhang desired. At the lower ends of the brace, they are connected to a cross piece 26. Extending rearwardly from the central portion of the cross piece is a base beam 28 to which the lower inclined end of the supporting beam 10 is secured by a fastening bolt 30. The beams and braces are connected together by fastening bolts and end plates in a well known manner to vary the inclination of the supporting beam 10, and the amount of overhang of the forward end of the beam 10. At the rear of the base beam 28 is a stirrup 32 through which a cross-piece 34 may project at both ends upon which weights may 'be placed such as barrels or rolls 36 of material to weight down this end of the hoist, thereby counterbalancing any weight which may be carried in the load receptacle 20, or by the cable 18.

The beams, braces, and cross pieces are preferably bolted together so that they may be easily disengaged and assembled and when disengaged, the parts will fold L compactly together so that they may be easily transported from one job to another, and moved from one floor or to the roof of a building with the least work and in the quickest time.

Mounted in the hoist frame preferably by means of a shaft 38 or another .siutable support which is attached at its ends by clamps 39 to the braces 34 is a platform 40 which may be adjusted in its inclination, but when horizontal is at a convenient height for engagement by workmen standing upon the roof or floor upon which the hoist is mounted. This platform preferably comprises a pair of connected channels 42 which extend transvesrely of the shaft 38 and pivoted thereon by bearings 44 and are of sufiicient length to project into the path of the cable 18 and to extend at the same time over the parapet 12 or into the space within the hoist. To secure the platform at any desired inclination, flexible connections such as chains 46 and 43 are connected respectively at the front and rear portions of the platform and are separately engaged with hooks 50 secured to the cross piece 26, the

various links of the chains being engageable with the hooks to vary the inclination of the channels.

At the outer end of the platform, the upper web of each channel is omitted, leaving a clear space between these ends of the channels through which the cable 18 and the bucket or receptacle 2t) may pass freely in moving upward and downward in the hoist.

Slidable in the channels 42 is a supporting base 52 of the platform which has an outer end 54 connected by a hinge 56, thereby adapting it to move freely upward 5 with respect to the ends of the channels where the upper web is omitted but limited in its downward movement to the plane of the channels 42 by its engagement with the lower webs of the channels. The other end of the base has an inner end 53 connected by a hinge 66 and movable in either direction from the channels when the hinge is free from or outside of the inner ends thereof. This base 52 is therefore freely movable in either direction and may be locked in one or more positions in any suitable manner such as by pins 62 which extend through suitable openings 64 in the webs of the channels 42 and through any one of two or more sets of openings 66 in the base 52. One set of openings 66 may lock the base in a position to swing the outer end 54 upwardly and another set of openings 66 may lock the base in a position to hold the outer end in engagement with the webs of the channels 42 but to allow the inner end 58 to swing freely at the inner ends of the channels.

Mounted in the hoist frame between the platform 40 and the pulley 16 is a bar 63 having an arm 70 connected at one end thereof by a pivot 72 which allows the arm to swing downwardly at the end of the bar but when the arm is raised in alignment with the bar, it is limited in movement thereby.

This bar is adjustable in the frame by means of mounting strips 74 of thin metal or the like which may be attached by a bolt 76 which connects the side braces 24 to the beam 10.

At the lower ends of the strips 74 is a pivoting bolt 78 which extends through one of several openings 80 in the central portion of the bar 68 so that the bar may be adjustable lengthwise to extend the pivoted arm 70 more or less as desired. In order to vary the inclination of the bar 68, a rigid member 82 is connected to the inner end of the bar opposite the arm 70 by means of a bolt 84 extending through the bar 68 and any one of a plurality of openings 86 in the member 82. The upper end of this member is connected by a bolt 88 with the supporting beam 10.

With this construction, the angular position and the amount of projection of the tilting arm 70 may be varied as desired.

In operation, this hoist is set up upon the roof or floor desired by mounting the beam 19 in an overhanging position at the edge of the building and adjusting the platform 40 and the tilting arm 70 in the proper positions.

The bucket or receptacle 20 is filled with material which is raised by the cable 18 either from an upper level or from the ground which raises the receptacle between the enter projecting ends of the channels 42 engaging the outer hinged end 54 of the platform base which raises this end as shown in Figs. 3 and 5 and allows the receptacle to pass beyond it.

If it is desired to seat the receptacle upon the platform 40, it is merely lowered until it rests upon the top of the outer end 54 as shown in Fig. 6 and the platform base may be pulled inwardly by a workman as desired.

If the receptacle is to be automatically dumped, the platform 40 is easily set at a different inclination as shown in Figs. 3 and 4, the receptacle need not necessarily engage and raise the pivoted outer end 54 of the platform base, but the tilting arm 70 is in the path of the innermost side of the receptacle so that as it is raised past the platform, the downwardly turned arm 70 will engage in the near side of the receptacle and as it is raised, the arm engages in the top of the receptacle gradually tilting it and the arm is moved upon its positioning bar 68 until it is in alignment with the bar, whereupon the receptacle will be up-ended and the contents discharge therefrom upon the platform 40 and particularly upon the base 52 of the platform which is slidable within the side channels 42. If the receiving platform is sufficiently inclined as indicated in Fig. 4, the material from the receptacle 20 will slide or flow down the platform and may be received by a wheelbarrow 90 or any other suitable receptacle placed at the bottom of the inclined platform.

If it is desirable to transfer material in the receptacle 20 at a distance from the hoist, it may be deposited upon the platform as in Fig. 7 disengaged from the cable 18 and moved inwardly upon the sliding base 52. The sliding base may be moved inwardly and the inner end of the base inclined downwardly so that the receptacle may be moved downwardly upon the inclined inner end 58 to the floor or roof level.

Thus the receptacle may be filled at the bottom, raised and deposited or dumped at the upper level without special attention at the time of a workman at the upper level of the hoist. Thereafter, when he. is ready, the workman at the upper level may appear at the hoist and empty the container or remove a filled wheelbarrow and return the receptacle for another load. After work with the hoist is finished at any level, the parts thereof may be quickly detached and assembled in compact relation for moving them to another level or a different location where they may be again set up with the same relation of the parts or the parts may be quickly adjusted for different hoisting conditions or to accommodate different hoisting materials.

While a preferred construction has been described in some detail, it should be regarded as an illustration or example rather than as a limitation or restriction of the invention, since various changes in the construction, combination, and arrangement of the parts may be made without departing from the spirit and scope of the invention.

I claim:

1. In a hoist for buildings and the like, a beam to project at one end beyond the side of a building, means for supporting the projecting end of the beam in overhanging relation with respect to a floor or roof level of the building, a pulley carried by the overhanging portion of the beam outside of the building, a load receptacle and a cable connected thereto and extending over the pulley for raising material with respect to the beam, and a platform supported by said means below the pulley and above the floor level, the platform having an outer upwardly tiltable portion in the path of the receptacle, engaged and raised by the receptacle in its upward movement and movable downwardly to engage the bottom of andsup port the receptacle when it is raised above the'tiltable section and lowered thereon.

2. In a hoist in accordance with claim 1, the platform having means for slidably supporting it at different angles to move into and out of the path of the load receptacle.

3. In a hoist in accordance with claim 2, the means to slidably support the platform comprising side channels, the outer top webs of which are omitted at the outer ends to free the tiltable portion for upward movement and the lower Webs to engage the tiltable portion in the downward movement thereof.

4. In a hoist according to claim 1, side channels for slidably supporting the platform and adjustable means in connection with the means for supporting the beanr for moving the platform and the supporting channels to different inclinations with respect to the floor or roof level.

5. In a hoist in accordance with claim 4, the adjusting means comprising chains connected at the ends of the channels and to the means for supporting the beam for varying the inclination of the channels and the platform supported thereby.

6. In a hoist in accordance with claim 2, the platform having an inner tiltable portion which is inclinable relative to the remainder of the platform when the platform is moved inwardly from its outer receptacle engaging position.

7. In a hoist for buildings and the like in accordance with claim 1, means forming a projection extending from said supporting means in the path of the receptacle below the pulley including an extending arm to engage the top of the receptacle and to tilt the receptacle for discharging material therefrom upon the platform as the receptacle is moved upwardly beyond such engagement, and the said platform in the path of the receptacle which is engaged by the receptacle being movable thereby out of said path and returning thereto as the receptacle engages said projection.

8. In a hoist in accordance with claim 7, the load receptacle being open at the top, and means for supporting the arm to swing downwardly to engage in the open top of the receptacle, and stop means for limiting the hinging movement of the arm to tilt the top of the receptacle as it is moved upwardly in engagement with the arm.

9. In a hoist in accordance with claim 8, the means for supporting the hinged arm having an adjustable connection by which the position of the arm may be varied for upper and lower engagement with the receptacle.

10. In a hoist for buildings and the like, in accordance with claim 1, including a projection in the path of the receptacle between the platform, and the pulley having a hinged arm extending downwardly to engage the top of the receptacle and rotatable upwardly to a limited extent by the upward movement of the receptacle to tilt the receptacle and discharge the contents thereof upon the platform as the receptacle is moved upwardly in engagement with the arm.

11. In a hoist in accordance with claim 1, a pair of side braces connected to the beam at a distance from its projecting end and extending angularly downward therefrom at the sides, a connecting cross piece for engaging the bottoms of the braces, a rearwardly extending base beam connected at one end intermediate the ends of the cross piece and extending beyond the other end of the supporting beam, a stirrup at the rear end of the base beam and a cross piece projecting at the sides thereof for receiving counter-balancing weights thereon to prevent the hoist from tilting upwardly at its rear end due to the Weight of the load receptacle.

12. A hoist in accordance with claim 11 comprising a support connected to the side braces above the lower ends thereof in which said platform is pivotally supported, chains connected at opposite ends of the platform and adjustably connected to the cross piece at the bottom of the braces for adjusting the inclination of the platform and the tiltable portion in the hoist.

13. In a hoist in accordance with claim 11, the beams, braces and cross pieces being detachably bolted together so that the hoist may be easily erected and taken apart for storage and transportation to and from the top of a building and any intermediate floor thereof.

14. In a hoist in accordance with claim 13, a projection in the path of the receptacle below the pulley including an extending arm to engage the top of the receptacle, a mounting bar in which the arm is pivoted to swing in one direction and engages the bar for limiting its movement in the other direction, the bar having supporting strips adjustably attached to the projecting beam for supporting the bar intermediate its ends, and a positioning member adjustably connected at its lower end to the end of the bar opposite the pivoted arm and connected at its upper end to the projecting beam at a distance from the attachment of the strips to the beam.

15. In a hoist in accordance with claim 7, the projection being hinged at one end of a bar to swing at an angle therefrom, and the swinging movement limited by engagement of the arm in alignment with the bar, and means connected to the said beam for adjustably mounting the bar supporting the arm at various inclinations and for varying the location of the said arm in various positions with respect to the beam.

References Cited in the file of this patent UNITED STATES PATENTS 607,966 Strickler July 26, 1898 980,734 Ankrom Jan. 3, 1911 1,562,781 Moser Nov. 24, 1925 1,567,385 Reed Dec. 29, 1925

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