US2431047A - Material loading and elevating device - Google Patents

Description

Nov. 18, 1947. D. c. JONES v MATERIAL LOADING AND ELEVATING DEVICE Filed Feb. 21, 1946 I 4 Sheets-Sheet 1 Nov. 18, 1947. o. c. JONES I MATERIAL LOADING AND ELEVATING DEVICE Filed Feb. 21, 1946 4 Sheets-Sheet? v l WFLWJI n.- I .GWI 5 2 2 I T. I h .1 v m 4 W 3 2 D. q. JONES MATERIAL LOADING Ann ELEVATING DEVICE Ndv; 18,1947.

4 Sheets-Sheet 5 Filed Fb. 21, 1946- INVENTOR. j

Nov. 18,1947. D. c. JONES I MATERIAL LOADING AND ELEVATING DEVICE Filed Feb. 21, 1946 {Sheets-Sheet 4 INVENTOR.

Patented Nov. 18, 1947 MATERIAL LOADING AND ELEVATING DEVICE Daniel C. Jones, Port Washington, Wis., assignor to Kwik-Mix Company a corporation Port Washington, Wis.,

Application February 21, 1946, Serial No. 649,173

The object of my present invention has been to produce a simple and compact form of material loading and piling boom and bucket attachment for concrete mixing machines or the like.

The attachment of my invention is designed to be readily mounted upon conventional forms of mixing machines for mixing concrete of the Portland cement class of aggregate, bituminous concrete, or other similar aggregate materials required to be mixed by agitation.

A special object of my invention has been to so design the boom and bucket attachment that the boom member is made in sections, certain of which are foldable upon a main section, or in relation to such main section, whereby when the mixing machine to which my attachment is applied is in transit, or being moved from one place to another, the upper end of the boom will be of reduced height and the lower boom section will be elevated so as not to interfere with the travel movement.

Still another object of my invention has been to design special adjustable jack braking orsupporting means for the attachment including the boom, so that when the loading or piling attachment is in use the same may be supported in a stable condition to prevent liability of overturning of the machine carrying the attachment, when the loading or conveying bucket reaches a travel point at the upper end of the boom, at which time its weight and that of its contents may exert an overturning force in the event the braking or jack means were not supplied.

Other objects of my invention will appear upon consideration of the detail description afforded by the following specification, in conjunction with the accompanying drawings, in which:

Figure l is a side elevation of a small portable type concrete mixing machine equipped with an attachment embodying the essential features of my invention.

Figure 2 is a fragmentary view illustrating the lower section of the boom lip-folded to occupy its position assumed for travel movement of the mixer, and also illustrating the jack means elevated as when not in use, for the same purpose.

Figure 3 is an end elevation of my machine as equipped with the loading attachment of my invention.

Figure 4 is a sectional view taken vertically about on the line 4-4 of Figure 3, looking in the direction of the arrows, and bringing out more clearly the bucket supporting dolly or carriage that travels lengthwise of the boom; also show- 7 Claims. (Cl. 214119) ing the jack means as positioned in the lower adjustment thereof similar to Figure 1.

Figure 5 is a sectional view taken about on the line 55 of Figure 4, bringing out somewhat more clearly the mounting of the roller dolly or carriage in relation to the sides of the boom, which are channeled, in the channel portions of which the rollers or wheels of the dolly operate.

Figure 6 is a fragmentary vertical sectional view showing the upper portion of the boom in its operative position as when the attachment is being used for loading or material piling pur poses, and illustrating further the disposition of the bucket when it has reached the upper end of the boom and as it approaches its dumping position, or its substantially dumping position.

Figure 7 is a side elevation of the mixing machine as equipped with my attachment, but illustrating the boom sections as when they are down-folded as respects the top section, and upfolded as respects the lower section, with the jacks upraised and supported in inoperative position, the parts thus disposed being located ready for travel movement of the mixer in transit from one place to another.

Figure 8 is a detail sectional View bringing out more clearly the mounting of the roller shafts on the dolly to which the loading bucket is pivoted, and the manner in which the Wheels of the dolly operate in the channel sides of the boom.

Figure 9 is a detail fragmentary view, a vertical section, looking toward the inner face of one side of the boom and showing the manner of securing the upper section side parts of the boom to the side parts of the main boom section.

Figure 10 is a detail sectional view taken about on the line l0--.l0 of Figure 9.

Referring to Figure 1 of the drawings particularly, my machine, including the attachment means of my invention, will be seen to comprise largely the mixing machine A which will include the customary mixer usually of the rotative type, and this machine may be a Portland cement concrete mixing machine, or a bituminous concrete mixing machine, as may be desired. The machine A includes a chassis l and a suitable superstructure frame within which the mixer is mounted and upon which a loading skip of the conventional type, designated 2, is carried. The skip 2 is adapted to be loaded while in a downward or substantially horizontal position, with the aggregate materials to be mixed, and then will be raised by cable means 3 so as to discharge its contents into the mixing drum or mixer, the cables 3 being operated by a shaft 4 having pulleys on which the cables 3 wind, a suitable cable 5 operating around the winding drum 6 being employed for the actuation of the skip, the cable 5 being connected with a hoist drum, not shown in detail. All of the above construction is generally conventional in the art, and it will be noted that the chassis or frame i is mounted upon wheels '1, a pair-of which arecarried-by the chassis at the opposite ends thereof.

Describing now the boom and bucket attachment means of the present invention, it is notable that I employ a boom designated generally at 18 and comprising a main section composed of the side channels 8, suitably connected by means of T-angles or the like designated flb, or -by any other cross bracing struts l disposed at angles to the said main channel members 8. The channels of the main boom section membersB face inwardly or toward each other and carry at their=upper ends the top folding section channels 9 of the boom. The channels of the top section 9 are pivotally connected withthechannels 8 as shown at H so that'the'top boom section may be folded inwardly and downwardly "toward the mixing machine when out of use as shown in Figure '7 of the drawings. When the machine is'in use and the attachment employed for' hoisting the loading bucket i 'to a dumping position such as shown in Figure 6, the top channels 'of the upper boom section, indicated at'9, are held rigidly in place on'the main boom section channels 8 by suitable bolts or securing means l3 which pass through extension plates I'd, see'Figure 4, on the upper ends of the channel members-8', and through the lower end portions of -the channel members 9 of the top boom section.

The top boom'section comprising the channels 9 carries cross shaft 15 at its upper end, and on'this cross shaft are mounted small cable winding drums designated l6 about which wind the lifting cables I that pass downwardly'from the drums IE and are connected in a fixed manner at their lower ends to the loading bucket l2 at opposite sides of the latter.

The shaft I5 is further operated by means of an operating cable I8 which winds and unwinds about an actuating drum IS on the shaft at one end of the latter and fixed tosaid shaft. The hoisting cable l8 leadsfrom'thedruml downwardly to the mixing machine A and is. connected to a suitable hoist drum mounted onsaid mixing machine and carried by an extensionframe structure 26 extending laterally from the chassis l of the mixing machine, and which frame structure supports the engine 2 I. 'The cablemeans [8 is operated somewhat similarly tothelcable means 5 by which the skip 2 is raised and lowered. In other words, the cable [8 is wound upon itshoist drum in order to turnthe shaft 1 5 and the winding drums l6, thereby winding upfthe cables I! and causing the loading bucket. l2 totravel upwardly on the boom structurecomprising-the main section including the channel sides 8. and the top section including the channel members 9.

The boom structure likewise comprises a lower end section adapted to fold upwardly in the manner illustrated in Figure' '7 said lower .boom section comprising the side channelmemberslz, seen best in'Figure 4, thesame' being pivotally attached at 23 to' the lower ends of' thec'nannel members'B of themainboom section. The lower boom section including the. parts 2Zwill gravitate to its position shown in Figure-ewith itschannel portions in alinement with the channel parts 8. When the lower boom section isto be folded up :hold the jackmembers at a fixed adjustment in operative positions as shown in Figure 4, or to hold ;the said jack members in an elevated position raised vfrom theaground as shown in Figure 2.

Additional openingszin the jack members 25 may provide for adjustment vertically of the positions of the-jack members so that their lower ends may be caused to abut with the ground adjacent to the mixing machine even though there may be uneven surfaces in the groundwith which the jack members shouldbe engaged when they are arranged in their operative positions.

The boom structure comprising the top, bottom, and main sections of channels as described, is connected with the frame structure of the mixing machine A by suitablediagonal braces 29 and '36 and substantially horizontal braces 3|, said braces being .bestseen in-Figure 1 and Figure'l. I

Referring to"Fig.ure--4, the bucket 12 and its mounting means are best shown in this view. The bucket 12 has rigidly mounted under the bottomportion thereof, or on a sidewhich may be termed .the dumpingbottom .portion, dolly or carriage means.includingthemeans or rollers 32. These wheels or rollers 32 operate in the channel portionslof the boom section of my .attachment, asthebucket llis raised and lowered relatively tosaid boom structure. .As will be seen in'Figure i, the vupper ends of the main boom channels'8 extend slightly laterally in a direction away from the. mixing machine-A. Also, as seen in"Figure'4,the inner sides of the channels of the lowerboom section, .said channels designated' 22, are deflected inwardly. toward the machine slightly so as to form wheel pockets to enable a' slight 'tiltingof the upper portionof the bucket inwardlyn-towardithe .disc-hargemeans of the mixing machine when bucket is inits lower positionfor receiving.materials aftermixing in said machine.

Describing. the operation ofmy. invention, it is notablethat the' bucketfl2 .Willbein its lowermost, position, as shown in Figure '1, when it receives the mixed materials from the concrete or other IniXerA. Whenthecables ll are operated to elevate the bucket 12, the mode of attachment of the cables to the bucketcompels a, slight outward movementof the bucket to cause the Wheels '32 to travelfrom thepocketlZa of the lower boom section channels '22, against the-rear or outer flanges of said channels, and thereupon continued upward movement. of the bucket l2 causes'the wheels 32. to travel inthe channels of the main boom sectionB. When thebucket [2 reaches the upper end of. its movement on the mainboom'section,'the upper, rollers 32 move intothe' laterally extending pocket portions flalof .the channels'8 as previously referred to, seeFigure 6, and thus carry thedumping bottom or side of the bucket 12 slightly' laterally preliminary to. its -final dumpingmovement compelled. by the raising of thebucketbodilybya pivotal move- -ment.of the connectingbracket which connect the upper end portion of the bucket pivotally to the upper cross shaft of the upper wheel 32 of the dolly or carriage 35. In other words, the bucket, before it reaches the upper end of the boom, has its dumping bottom or side portion parallel with the frame structure of the carriage 35, and the lower portion of the bucket rests on the rest channel 36 seen best in Figure 6. Then when the bucket reaches the dumping position of Figure 6, it may tilt on the dolly or carriage 35 in a pivotal manner about the upper wheel shaft of'the dolly as a pivotal axis.

The bucket means I2 may be utilized as a loading device for loading materials mixed in the concrete mixer A onto a truck or like vehicle for carrying off. Or, the boom and bucket attachment of my invention may be employed as a means for piling non-solidifying materials mixed in a mixer of either the Portland cement or bituminous type, in a pile which may ultimately be as high as the upper end of the boom B.

It is also contemplated that under some conditions my boom and bucket attachment may be mounted upon a different type of vehicle than a concrete mixer, and thus utilized to convey material from a containing body or receiving body of any kind to a predetermined point of discharge at an elevation.

When it is desired to move the concrete mixer or vehicle which supports my boom and bucket attachment type of loader from place to place, it is contemplated that the lower section of the boom comprising the parts 22 shall be elevated to the osition shown in Figure '7, the jacks 25 correspondingly elevated to the position shown in said figure, and the top section of the boom broken down to assume the downwardly and inwardly inclined position illustrated in Figure 7 by removal of the bolts I3 disconecting the plates l4 from the channel members 9. The above operations may be quickly performed so that the supporting machine for my loading and piling attachment may be quickly readied for travel, and, in the same manner, or reverse thereof, the boom sections and the jacks may be readied for actual use of the loading attachment with relatively little delay when the machine or supporting vehicle of the attachment reaches the place where it can be put into use.

It is contemplated that when the bucket !2 reaches the position of Figure 6, which is about at its dumping position, said bucket may strike a knock-out lever 40, see Figure 1, Figure 7 and Figure 3, which knock-out lever 40 is connected by suitable rods and levers, see parts 4| and 42, Figure 7, so as to thereby throw out the clutch means for the hoisting drum by which the cables I! for hoisting the bucket I 2 are operated. Thus, the bucket l2 will not be over-run at the upper end of the boom structure with danger or possibly damaging inertia of movement. When the clutch mentioned, see Figure 3, is thrown out, a brake will be applied in accordance with conventional practice, and the bucket l2 will be held at its upper dumping position until the operator of the machine, by use of a suitable hand lever, lowers the bucket [2 to its loading position of Figure 1.

Since clutch knock-out and brake units of the types referred to are conventional in the art and commonly used for loading skips such as the skip 2, the details of such units are not material to the invention though it is desirable that a conventional type of unit be employed.

Bolts or fastenings 43 may be used, see Figure 1,

to secure the boom section 22 in operative posi-- tion for use, and removed to enable folding up of the section. Likewise, the bolts l3 are removable preliminary to folding down the top boom section 9.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is

1. In combination with a portable chassis, a boom and bucket structure comprising an upwardly inclined boom, a bucket including a supporting dolly arranged to travel lengthwise of the boom, means for hoisting the bucket relatively to the boom for travel movement upwardly and downwardly thereon, and frame members connecting the boom structure with the chassis for rigidly supporting the boom structure, said boom structure comprising a main section, and top and bottom sections foldable downwardly and upwardly, respectively, in directions toward each other reducing the length of the boom structure for travel purposes.

2. In combination with a portable chassis, a boom and bucket structure comprising an upwardly inclined boom, a bucket including a supporting dolly arranged to travel lengthwise of the boom, means for hoisting the bucket relatively to the boom for travel movement upwardly and downwardly thereon, and frame members connecting the boom structure with the chassis for rigidly supporting the boom structure, said boom structure comprising a main or body section, a top section alignable with the main or body section and downwardly foldable upon the latter, means for holding the top section in alignment with the body or main section of the boom, a lower boom section at the lower end of the main boom section and movable relatively thereto, and means for holding the lower boom section raised when not in use.

3. The combination of parts as set forth in claim 2, in which the lower boom section is gravitatable to a position in alignment with the main boom section, and jacks carried by the main boom section, with adjusting means for the jacks to adjust them relatively to the ground level and hold the same at such adjustment.

4. In combination with a support, a boom and bucket structure comprising an upwardly inclined boom, a bucket including a supporting dolly arranged to travel lengthwise of the boom, means for hoisting the bucket relatively to the boom for travel movement upwardly and downwardly thereon, and frame members connecting the boom structure with the support for rigidly supporting the boom structure, said boom structure comprising top and bottom sections foldable at and toward the inner side of the boom structure for reducing the length of the boom structure for travel purposes.

5. The construction claimed in claim 4, in which the hoisting means comprises power operated cable means connected to the bucket to pull the bucket upwards 0n the boom and tilt the bucket on its dolly as the bucket reaches the upper end of the boom, the cable actuated means being mounted on the top boom section and movable therewith for effecting hoisting of the bucket.

6. The construction claimed in claim 4, in which the hoisting means comprises power operated cable means connected to the bucket to pull the bucket upwards on the boom and tilt the bucket on its dolly as the bucket reaches the upper end of the boom, the cable actuated means being mounted on the top boom section and movable therewith for effecting hoisting of the bucket, cable drums actuated by the cable actuated means andicarried by the top section, and cables connecting the drums directly to the bucket.

7. In combination with a support, a boom and bucket structure comprising an upwardly inclined boom, a chute on the support to discharge materiahsa bucket including a supporting .dolly arranged to, travel lengthwise of the boom, means for hoisting thebucket relatively to the boom for travel movement upwardly and downwardly thereon, and frame members connecting the boom structure with the support for rigidly supporting the boom structure, said boom structure comprising sections foldable one in relation to the other for reducing the length of the boom structure for travel purposes, the lower boom section having lateral pockets at its lower end extending in the direction of the support for guid- 20 ing the dolly and bucketrin a direction toward 8 and below the said chute at the lower limit of their travel movement relative to the boom structure; I

DANIEL C. JONES. REFERENCES ol'rnn The following references are of record in the fileioi this patent:

UNITED STATES PATENTS Number Name Date 973,543 Muller Oct. 25, 1910 1,232,749 Allen July 10, 1917 1,449,733" Clausen Mar. 27, 1923 2,042,388 Cogito et al. May 26, 1936 2,353,487 Moss July 11, 1944 FOREIGN PATENTS Number Country Date 363,726 Great'Britain Dec. 31, 1931 337,423 Germany May 31, 1921

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