US1550262A - Hoisting and dumping apparatus - Google Patents

Description

18. 1925. I R. JURGENSON HOIS'IING AND DUMPING APPARATUS 3 Sheets-$heet 1 M Filed April 10,

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R. JURGENSON HOISTING AND DUMPING APPARATUS Filed April 10. 1925 s Sheets-Sheet 2' Aug. 18. 1925. 1,550,262

R. JURGENSON HOISTING AND DUMPING APPARATUS Filed April 10, 1923 3 Sheets-Sheet 3 27 if 34 Rudolph. JLU967ZOOZZ.

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Patented Aug. 18, 1925.

UNITED STATES RUDOLPH JURGENSON, 0F BOSTON, MASSACHUSETTS.

HOISTING AND DUMPING APPARATUS.

Application filed April 10, 1923. Serial No. 631,075.

To all whom it may concern:

Be'it known that I, RUDOLPH JURenNsoN, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented new and useful Improvements in Hoisting and Dumping Apparatus, of which the following is a specification.

This invention relates to a hoisting and dumping apparatus and is particularly intended for use in building concrete structures for hoisting and dumping the concrete mixture.

The object of the invention is to provide a cheap and simple apparatus which will automatically hoist a container and at the upward end of its travel will invert the container so that the contents thereof may be dumped, and furthermore, will operate to automatically return the container to its normal upright position at the beginning of its return travel and lower it to receive a new supply.

To these ends the invention consists in the combination and arrangement of parts set forth in the following specification and particularly pointed out in the claims thereof.

In the drawings illustrating my invention I have depicted two forms of apparatuses, one form being illustrated in Figs. 1, 2, 3 and 4, the other form being illustrated in Figs. 5, 6 and 7. The two apparatuses are, however, substantially alike except in the specific means whereby the container is guided during its upward movement and during the inverting motion of the same.

Referring to the drawings:

Figure 1 is a front elevation partly in section of my improved hoisting and dumping apparatus.

Fig. 2 is a plan view of the same.

Fig. 3 is a sectional elevation similar to Fig. 1 illustrating the relative positions of the parts with the container inverted.

Fig. 4 is an enlarged sectional plan taken on the line 44 of Fig. 1. Fig. 4 is a side elevationof the container and its bail.

Fig. 5 is a side elevation similar to Fig. 1, illustrating a modified form of my inven tion.

Fig. 6 is a plan view of the same.

Fig. 7 is a sectional plan taken on line 77 of Figurefi. v

Fig. 8 is an enlarged view of the upper lowered position.

, in its inverted position.

Like numerals refer to like parts throughout the several views of the drawings.

In Figures 1 and3 a portion of a form for a concrete pier is illustrated.

Referring to Figures 1 to 4 inclusive and Figs. 8 and 9, 10 is a framework, embodying a base 11, uprights 12 and 13, top members 14, platform 15 andhorizontal cross members 16, 17, 18, 19 and braces 20. 21 is a container which is provided with a bail 22 pivoted at 23 to the container on diametrically opposite sides and preferably adjacent thebottom thereof. A pair of oppositely disposed guide rolls 24 are rotatably mounted upon studs 25 fast to said container and these guide rolls travel in a pair of oppositely disposed guide members 26 and 27 which are rigidly and firmly secured to the frame of the apparatus. These guide members each preferably consists of a timber 28 to the opposite sides of which are secured flat strips of steel 29, whereby a guideway 30 is provided between said strips of steel 29 and in these guideways the guide rolls 24 travel. The guide members, or tracks, 26 and 27 terminate at their upper ends in a curved portion 31 and horizontal laterally extending portion 32, said curved portion 31 and horizontally extending portion 32 forming the continuation and termination of the tracks 26 and 27 at the upper end thereof.

The container is raised and lowered by means of a hoisting rope or cable 33 which extends from the bail 22 upwardly and 7 passes overgui de rolls 34, 35, and thence downwardly to a drum 36 which is operated by mechanism not shown in the drawings but well known to those skilled in the art, and operated by a gasoline engine37. The hoisting drum 36 and engine 37 are preferably mounted upon a. truck 38 and between the two is positioned a cement mixing machine 39 provided with a spout 40 which guides the concrete from the mixer intothe container 21 when the container is in its It will be noted that the pivots 23 of the bail 22 are located approximately midway between the opposite sides of the container, while the pivots of the guide rolls are positioned at one side of a vertical plane containing the pivots 23, SO that any tendency of the container to tip in a clockwise direction as viewed in Fig. 4 during its upward motion and before it arrives at the end of its upward motion is counteractec.

In order to assist in returning the container from the inverted position illustrated in Figs. 3, 8 and 9 to its normal vertical position, an arm 41 is provided. This arm is pivoted to the underside of the horizontal portions 32 of the tracks 26 and 27 by means of a shaft 42. A coiled torsional spring 43 encircles the shaft 42 and is fastened at one end thereof to the arm 41 and at the other end thereof to the track 27. One of the pivots 23 of the bail 22 is extended beyond the bail so that it will engage the arm 41 when the container is approaching the upper end of its travel and will lift the arm 41 from the horizontal position illustrated in Fig. 1 to the inclined position illustrated in Fig. 3, whereby the spring 43 will be wound up. The arm 41 is also provided with a counterweight 44 which assists the spring 43 in its operation. Either the spring 43 or the counterweight 44, or both the spring 43 and counterweight 44, may be utilized as may be found convenient or desirable.

A spring-actuated buffer 45, consisting a horizontal arm, is provided, which 1s hinged at 46 to the cross piece 18. This buffer engages a spring 47 which encircles the lower end of an arm 48 supported by a bracket 49 upon the top 14. The object of this buffer is to form a. yieldin stop which will be engaged by the container when it is inverted, as illustrated in Figs. 3, 8 and 9.

A chute 50 is provided to receive the concrete mixture from the container and guide it into a form 51 for the pier which is being built.

The general operation of the apparatus hereinbefore specifically described and illustrated in Figs. 1, 2, 3, 4, 8 and 9 is as follows :The container is filled with aconcrete mass from the concrete mixer 39, which flows outwardly from said concrete mixer and is guided by the spout into said container. The container is hoisted by means of the apparatus hereinbefore described from its lowermost position, as shown in Figure 1, until it arrives adjacent the upper ends of the guide members 26 and 27.

hen the rolls 24 arrive at the curved portions 31, they pass along said curved portions on to the horizontal portions 32 of the tracks, while at the same time the bottom portion of the container continues to be raised by the hoisting rope 33 and this causes the container to assume the inverted position illustrated in Figs. 3, 8 and 9. The concrete is thus dumped from the container into the chute and passes down said chute and into the form 51. During this inverting operation of the container, the arm 41 is rocked by the extended pivot 23 from the horizontal position illustrated in Figure 1 to the upwardly inclined position illustrated in Figs. 3 and 8 and at the end of the inverting operation the bottom edge of the container is brought into contact with the arm 45, thus stopping the movement of the same and acting as a buffer to take the shock.

After the container has been emptied, the hoisting rope is slackened and the container 21 actuated by the arm 41 spring 43 and by the weight 44 is reversed to occupy its normal vertical position and passes around the curved portions 31 and into the vertical portions of the tracks and is then lowered to rest upon the base 11, as illustrated in Figure 1, in order to receive a new supply of concrete from the concrete mixer.

A modified form of my invention is illustrated in Figures 5, 6, '7 and 10 which will now be described. This modified form embodies a framework consisting of a base 53, top 54, braces 55, horizontal platform 56, horizontal frame member 57 and vertical frame member 58. A chute 59 is provided to receive the concrete from the container 60. The engine, concrete mixer, hoisting drum and spout are the same as in the embodiment of my invention illustrated in Figs. 1 to 4 inclusive.

The container is hoisted in the same manner as in the form of my invention hereinbefore described, by means of a hoisting rope 61 which is connected to the container by a bail 62, pivoted at 63 near the bottom of the container, as hereinbefore described.

Instead of tracks, guide ropes 64 are employed in this embodiment of my invention and these guide ropes extend through blocks 66 mounted upon studs 67 on diametrically opposite sides of the container 60. The blocks 66 are split at 68 to receive a rib 69 formed on the rope 64 at that portion there of which is curved at 70 and 71, said curved portions forming the upper ends of the guide ropes 64. A spring buffer 72 is provided upon the frame of the machine against which the container abuts at the end of its inverting operation.

lVhen the container is being returned to a vertical position after the dumping operation has been performed, the spring buffer 72 assists in moving the container along the curved portions 70 of the guide ropes.

The general operation of this modification of my invention is as follows :The container is supplied with concrete when in its lowered position as hereinbefore described and is hoisted by the hoisting rope 61 and drum and engine 37 to the position illustrated in full lines, Figs. 5 and 10, where the container is shown inverted and the concrete mass is dumped into the chute 59 down which it slides into a form not shown in the drawings. The container, when it reaches the upper end of the guide ropes 64 is inverted by reason of the blocks 66 passing around the curved portion 70 of the guide ropes, while at the same time the bottom of the container is drawn upwardly to invert the same by the hoisting rope 61. this inverting movement the container is moved into the position illustrated in Figs. 5 and 10 and at the last end of its movement the container strikes the buffer 72 and compresses the bufiier spring. After the concrete has passed out of the container and down the chute 59 into the form, the hoisting rope 61 is given a slight movement upward to still further compress the buffer spring and is then released, whereupon the The container after having assumed its normal vertical position is lowered to the position shown in dotted lines, Fig. 5, and is again filled with concrete from the concrete mixer.

I claim:

1. A hoisting and dumping apparatus having, in combination, a container, a bail pivotally attached to said container, mechanism connected to said bail to hoist and lower said container, a pair of diametrically opposed pivots mounted on said container above the point where said bail is pivotally attached thereto and vertically positioned stationary and continuous guiding means adapted to guide said pivots and terminating at their upper ends in a pair of angular and oppositely disposed stationary Durmg branches whereby said container may be inverted when it arrives at the end of its travel upwardly.

2. A hoisting and dumping apparatus having, in combination, a container, a bail pivotally attached to said container, mechanism connected to said bail to hoist and lower said container, a pair of diametrically opposed pivots mounted on said container above the point where said bail is pivotally attached thereto, vertically positioned stationary tracks adapted to guide said pivots and terminating at theirupper ends in a pair of angularly and oppositely disposed stationary branches whereby said container may be inverted when it arrives at the end of its travel upwardly and means to return said container to its normal position at the beginning of its travel downwardly.

8. A hoisting and dumping apparatus having, in combination, a container, a bail pivotally attached to said container, mechanism connected to said bail to hoist and lower said container, a pair of diametrically opposed pivots mounted on said container above the point where said bail is pivotally attached thereto, vertically positioned stationary tracks adapted to guide said pivots and terminating at their upper ends in a pair of horizontal oppositely disposed stationary branches and curved branch portions connecting said vertical and horizontal track portions whereby said container may be inverted when it arrives at the end of its travel upwardly, a pivotally mounted arm and a projection on said container adapted to engage said arm and lift it out of its normal position whereby said container may be returned to its normal position at the beginning of its travel downwardly.

In testimonywhereof I have hereunto set my hand.

RUDOLPH URGENSON.

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