US1693198A - Machine fob distributing concrete - Google Patents

Description

Nov. 27, 1928. 1,693,198

H. EVERIST MACHINE FOR 'DISTRIBUTING CONCRETE Filed March 17, 1927 4 Sheets-Sheet l juve/111707,

Nov. .'27,l 1928. 1,693,198

f H. EvERls'r MACHINE FOR DISTRIBUTING `CONCRETE Filed March 17, 1927 4 Sheets-Sheet 2 wvento @95 HmwfEwm/s;

Nov. 27, 1928. L693J98 H. r-:vERls'r MACHINE FOR DISTRIBUTlNG CONCRETE Filed March 17, 1927 4 Sheets-Sheet 3 Nov. 27, 1928.

H. EVERIST MACHINE FOR DISTRIBUTING COH'CRETE 4 Sheets-'Sheet 4 Filed March 17, 1927 IN VEN TOR. ffaler'fe'as A TTORNEY.

Patented Nov. Z7, i928.

ltl

HUBERT EVERST7 0F SEOUX CT, lOl/VA.

MACHNE FOR DSTRBUTING CONCRETE.

Application led. March 17, 1927. Serial No. 18215141.

The invention relates tov machine for distributing concrete.

The object oi' the present invention is to improve the construction of machines for distributing concrete. and moreV especially the bucket driving and tripping mechanism for causing the bucket to traverse the boom and for tripping the bucket to discharge its contents and to provide simple, practical and 'eilicient'bucket actuating and tripping mechanism of strong7 durable and comparatively inexpensive construct-ion adapted to eiiect a tripping of the bucket and a clischarging of the contents automaticall).7 through the means for actuating the bucket to move the same along the boom.

A further object of the invention is to provide bucket actuating and tripping mechanism adapted to effect a positive tripping of the bucket and aL releasing of the bottom door thereof so that the concrete will be discharged over the surface or subgradc at the desired point.

Another obiect of the invention is to provide mechanism of this character in which the tripping mechanism Willrbe relieved of strain during both the outward and inward movements of the bucket in traversing the boom so that there .vill be no liability ot accidentally releasing the door of the bucket during the outward movement or subjecting tripping mechanism to undue strain during either movement.

A Yturtber object of the invention is to provide automatically operated means for lo king the door in its closed position adapted to be actuated by a cani or similar device but capable when moved to its locked osition of securely maintaining the door oi the bucket in such position While the bucket is being charged,

A 'further object of the` invention is to arrange the mountings of the door of the bucket so that the door in its opening movement will not projeitmaterially below thc lovver extrem'it;7 of the bucket and not be liable toc-ome in Contact with any obstruction which the bucket Will clear.

Furthermore it is the object of the invention to pr vide bucket actuating mechanism having a drive shaft adapted to be continuously operated in one ldirection for moving the bucket in either direction in traversing the boem. y

d other object@I in the vieiv ij Vwith .aontallyb ont .the boom mav be novel combination and arrangement of parts hereinafter fully described, illustrated in the accon'ipanying drawings and pointed out in the claims hereto appended, it being understood that various changes in the form, proportion and minor details ot construction7 Within the scope of the claims, may be resorted to Without departing from the spirit or sacriiicing any or" the advantages of the invention.

ln the drawings Figure l is a side elevationv of a portion of a concrete distributing machine `provided bucket actuating and tripping mechanisin constructed in accordance with this invention.

Fig. 2 is an end elevation partly in section illustrating the arrangement of the drums and the shifting mechanism for controlling the cables Which actuate the bucket.

lig. 3 is an enlarged transverse sectional vievv the bucket being shown in elevation.

Fig. l is a detail longitudinal sectional vieiv through the boom and carriage 'illustrating the construction oit' the bucket tripping mechanism and showing the position or" the same when the bucket is closed and locked.

F ig. 5 is a similar view illustrating the arrangement of the tripping mechanism When the door of the bucket is open and the bucket is traveling inwardly along the boom.

Fig. 6 an enlarged plan view of the bucket actuating mechanism.

,F ig. 7 is a plan View of the carriage and tripping mechanism.

lFig. 8 is an enlarged sidc elevation of the lower portion of the bucket illustrating the manner oif Amoimting and actuating the hinged bottom door.

Fig. is a transcrse sectional view on .zhe line. 9 of T'g 6 illustrating the arrangement oii the clutches and the sections ot the drum.

ln the accompanying drawings in which is ilhistrated the preferred embodiment of the invention l designates a boom composed of spaced channels 2 suitable connected together and forming exterior grooves or Ways at opposite sides of the boom for the reception of rollers 3 of a carriage i ot a bucket 5. The boom l is shown in the accompanying drawings as pivoted by a vertical pivot G to a supporting' snructure 7 so as to swing horis. manner to stein and horizontally it desired. The channels 2 are spaced apart to provide an intervening space 8 for the reception of a pair ot inner sheaves 9 and 10 and an outer sheave 11 around which are trained cables 12 and 13. The cables 12 and 13 extend upwardly from the inner sheaves 9 and 10 to a drum composed ot drinn sections 141 and 15 which are mounted on a drive shaft 16 and which are adapted to be connected with the same Aby suitable clutches 17 rand 1S. The clutches 17 and 18 are composed ont separable sections connected respectively with the shaft and with the druin sections 141-. and 15. The inner sections ot the clutches are connect-ed with the drinn sections and the outr-r sections are slidably mounted on the r rive shaft and are suitably inter-locked withV the same whereby they are cause to rotate therewith and When either ot the outer sect-ions of the clutches 17 and 18 is engaged with `its coacting inner section the drum section carrying such coacting inner clutch section will be rotated with the shaft. The slidable sections of the clutches 17 and 13 are connected with a suitable shifting,` lever 19 tulcruined intermediate of its ends at 20 to a suitable bracket 21 and having an approximately inverted U- shaped upper portion 22 which is connected with the slidable clutch sections by suitable collars 23. The collars 23 mounted in annular grooves 24 of the outer clutch sections which rotate treely while the collars are held against rotation by their connection with the shifting lever. The shift-ing lever is provided at its terminal portion 25 with a fork to receive the adjustable collar. The fork 25 is located at one side ot the Llc-shaped portion which is provided at its opposite side with an e'ilarged portion 2 6 havingy an {mening-5 receiving,v the other collar. By

shift the hwer one of the slidable clutch sections may be moved into engagement with the clutch section of the adjacent drum section and the otherI slidable collar will be carried out of engagement with its cooperating clutch section and the shitting lever may also be arranged in a neutral position as illus trated in Fig. 2 of the drawings with both of the slidable clutch sections in a, disengaged position. The ll-shaped portion 22 arches the drum sections 14 and 15 which are provided at their outer sides with flanges. The inner ends of the drum sections engage a friction disk 27 which is interposed between the drum sections. The disk 27 operates as a friction disk, and two coiled springs 27 are interposed between the outer ends of the drum sections 14: and 15 and collars 271 fixed to theshatt 16. The springs exert a thrust on. each drum section toward the friction disk 17 to prevent continued rotation of the drum sections when the loose cable is paid out. The springs 27a and the collars 27b are located within the clutch sections 18,

which are tubular and `constitute `hub eX- tensions of the drums, but any other form of clutch mechanism may be employed. The drive shaft 16, which is provided at one end with a beveled gear 28 is designed to rotate continuously in one direction indicated by the arrow in Fig. 1 of the drawings and either of the drum sections may be connected with the drive shaittor windingY on it the vcable connected to it. rlhe cable 12 passes beneath the inner sheave S) and extends outwardly beneath the boom to the outer sheave 11 and it passes upwardly at the outerv side thereof to the top of the said `outer sheave and then extends to the carriage 4- and is connected therewith by the means hereinafter described whereby when the cable 12 is wound around the drum section 14, the carriage lV and the bucket 5 will be moved outwardly .on the boom. The other cable 13 cxtcnds'from the inner sheave 10 to the carriage Il. and is connected with the same by the means here inafter described, whereby when the cable 13 is wound around the drum section 15 the carriage 4 and the bucket 5 will be moved inwardly along the boom. lVhen one ot the ,drinn sections is clutched to the drive shaft for windingr its cable thereon the other drum section is loose and slips on the shaft and pei-'mits the cable to be unwound troni it by the pull of the carriage and the bucket on such cable. The shifting ot the clutch operating lever will reverse the direction of the bucket and when it is desired to stop the travel of the bucket the shiftiugrlever is moved to its neutral position. The sheaves are grooved as shown and the cables 12 and 13 are connected with the carriave by means of a trip lever 2,9 opeiating g a slot 30 in the top of the carri agro and carrying a ronnecting link 31 pivote-Tl at "2 tothe trip lever and extending in advarn. and Yin rear ot the same and provided at its ends with suitable eyes or openings 3?/ lor the attachment of the adjacent terminal portions ot' the cables 12 and 13. The slot 30 i rmits the limited movement of the trip lever and its end walls toe-m stops tor limit-ina; the

movement of the trip lever inde-pen ntly of the carriage and when the ear moving outwardlj.7 the trip lever lies against the 'troni wall. of the slot 30 and relieves the tripping; mechanism oil undue strain when the carriage is movingr inwardly alone' the boom the trip lever 29 occupies a position adjacent and in contact with the inner end wall of the slot 30 and is supported by the inner end wall during' such movement until it is actuated by the locking mechanism of the door 34 of the bucket as hereinafter fully explained.

The tripping lever is provided with a circular head S5 constituting a central sleeve and arranged on a rock shaft 36 between side sleeves or collars 37 fixed to the shaft 36 by W no lit)

incoados means'o' suitable fastening devices 38. Any suitable means may be employed for rigidly securing the side sleeves to the rock shaft and the said side sleeves are provided with segmental recesses 39 extending partially around the circumference of the side sleeves the rock shaft is limited by the end walls of l :the slot 30 and the pivotal connection 32 between the link 3l 'and the trip lever 29 permits the pivotal movement of the trip lever without altering the longitudinal position of the link 31 withvv relation to the attached portions of the cables. The segmental recesses of the side sleeves permit an independent movement of the rock shaft which is provided at its' ends with crank arms` l connected at their outer ends by suitable pivotsdt with'theupper ends'o lona upper links pivoted at i6 to upper ends of short lower links 47 which are pivotally connected at their lower ends to the door 34 by a suitable pivot 48. yThe upper and lower links are connected at their adjacent jointed ends by the pivot 4:6 with an' oscillatory link IlQwhich causes the'pivot 46 to travelvthrougli an arc whereby the upper and lower links are maintained in 'proper positionwi'th relationto the hinged door for constantly exerting' a pull in the proper dii same and said link ."cction to close t .go (.flosed and to swing properly to its open position.

The bucket which has a tapered lower portion is provided at one side of its lower extremity with an outlet arranged at an inclination and the hinged door is inclined when closed as clearly illustrated in Fig. l ot' the drawings. The hinged door which may be mounted in any desired manner is preferably provided with movablehinge elements r50 extending across the terminal portions ol" the door 84 and arranged at an inclination when the door is closed and provided at their upper ends with upwardly projecting eyes 5l which are pivoted to similar eyes 52 oit lixed hinge' elements or brackets 53 to which the links 49 are con` nested by suitable pivots 54. rlhe eyes of the fixed and Vmovable hinge elements are conelenables the hinged door 3l to be fully `nected by suitable pintles 55 and the pivoted point o?? the door is arranged'a sutlicient distance above the discharge opening to cause 'top portions.

of the door will not extend materially below vthe lower edge of the bucket and will not strike obstructions which the bucket will clear. The rock shaft is journaled in suitable bearings 56 which are mounted upon shoulders 57 of the carriage. ri`he shoulders have horizontal top portions and the bearings are arranged at the outer ends of the The rock shaft is equipped at the inner .side of the bearings with cam actuated arms 5S which are arranged in a horizontal position in contact with the shoul ders as clearly illustrated in Fig. l of the drawing when the door'orp the bucket is closed. The cam actuated arms are arranged at slightly less than a right angle to the crank arms and when the cam actuated are swung downwardly and forwardly to the horizontal position shown in F ig. l of the drawing the upper ends of the crank arms are carried slightly beyond the dead center te form a lock for holding the door in its closer. position. As the pivots 44 are carried forwardly beyond the central vertical planeet' the transverse rock shaft y pressure on the hinged door will tend to l the arms d3' forwardly and as the movement of the said arms 43 is limited by the contact of the cam actuated arms 58 the door will be nrmly locked and "l he arms 58 which assume an upright position whenV the locking mechanism is tripped and the door 3l is released and permitted to move to its open position. WV hen the bucket moves inwa. dly the upwardly extending arms 58 which are provided at their outer ends with rollers 62 are carried into engagement with the cams andthe rollers engage theunder- -laces of the llanges forming the cams 59 and the arms 58 are gradually swung downwardly to a horizontal position and t-he crank arms are moved upwardly and carried forwardly beyond the dead center to lock the door in its closed position. rllhe upward movement olf the crank arms closes the door to its discharging position. When t ie bucket moves outwardly the rollers will pass beneath the flanges and the door will c0111 .section l-l is unclutched from the drive shaft and the drum section l5 is clutched to the same to pull upon the cable 13 which will lirst operate to swing the trip lever from the position shown in Fig. 4l of the drawing to that illustrated in Fig. 5. When the trip leveris moved rearwardly or backwardly by the cable 13 its lugs will engage the adjacent shoulders formed by the solid portions 40 of the side sleeves 39 and the rock shaft will be rotated in a rearward direction thereby carrying the pivot si to the rear of the dead center which releases the hinged door and permits the .sani-e to swing to its open position. This rearward movement of the trip lever is limited by the rear wall of the slot 30 of the carriage and Ythe carriage may be moved inwardly or backwardly at the desired speed to distribute its contents as required. The segmental recesses of the side sleeves are of suilicient size to permit the rock shaft to rotate freely independently of the trip lever a suiiicient distance to permit the hinged door 30 to move to its open position for discharging the contents of the bucket. llilhen the bucket is carried iuwardly by the cable 13 to return the bucket to its charging position the rollers 62 and the arms 58 will be gradually swung downwardly in a forward direction to the position shown in Fig. l and this movement of the rock shaft will carry the shoulders of the side sleeves into engagement with the lugs ot the tripping lever and the latter will be rotated in a forward direction and carried into engagement with the front wall of the slot 230 by the forward rot-ation ot' the rock share incident to the action of the cams. rl"he horizontal portions 61 of the flanges which form the cams 59 are arranged to maintain the hinged door 34 in its closed position by confining the arms 5S in the horizontal position shown in Fig. l while the bucket is in charging position and until there is a pull on the cable l2 which will prcvcn t the tripping arm from moving rear- \\'ardly in the slot 30 and operating the rock shaft to trip the locking mechanism for releasing the hinged door. There will be no liability of the hinged door being accidentally released and permitted to open during the outward movement of the bucket as the weight of the contents of the bucket will positively prevent any liability of the arms 5 sii/'inging upwardly from their horizontal position. The arms 58 will remain in such horizontal position until the rock shaft is positively rotated by reverse pull on the tripping lever.

The carriage which may be of any desired construction is composed of spaced sides 63 and la connecting transverse member 64. rlhe sides have upper vertical portions and lower downwardly diverging portions. The shoulders 57 are formed by approximately inverted L-shaped brackets or members consisting of vertical outer portions and inwardly extending upper horizontal portions which are secured to the sides of a bucket adjacent the angle formed by the vertical and inclined portions of the sides. The horizontal cross member is located intermediate of the ends of the vertical portions of the sides of the carriage and the said sides extend upwardly at opposite sides of the channels 2. The rollers 3 which are provided vwith outer peripheral flanges extend into the grooves or waysof the channels and run upon the lower flanges of the channels as clearly illustrated in Fig. 3 of the draw` ings. The rollers are preferably arranged in pairs as clearly shown in Fig. 7 and are mounted upon suitable stub axles 65.

lVh'ile the machine is designed primarily for distributing concrete any other material may be handled as will be readily understood.

Also one of the salient features of the invention is that all tripping, traveling and dumping mechanism is arranged so that the concrete or other materials do not come in contact with the movable parts.

What I claim is:

l. In a machine of the class described,'

the combination of a bucket provided with an uli-let and having a hinged door and locking mechanism for retaining the door iny its closed position comprising a rock shaft having a crank arm and a cam actuated arm disposed at an angle, the crank arm being arranged to be carried to one side of the dead center in the closing movement of the door, means for limiting the movement of the cam actuated arm, a rela-tively long upper link pivoted to and depending from the crank arm, a relatively short lower link pivoted to the lowerend of the long link and to the door, and an oscillatory link pivoted to the bucket and connected with the said links at the adjacent ends thereof for causing the said ends of the'links to move in an arc in the proper direction for maintaining a constant pull on the door in the closing movement thereof whereby the weight of the door will retain the mechanism in its locked position.

2. .In a machine of the class described, the combination of a boom` a bucket having a carriage movable along the boom, said bucket being also provided with an outlet and having a hinged door, a rock shaft mounted on the carriage and having a cam actuated arm, and a crank arm connected with the `hinged door and arranged to be carried beyond the dead center for lockinglll) CAT

the door in closed position, a tripping mechanism comprising a tripping lever pivotally mounted the rock lshaft and adapted to beconnccted with a means for moving the bucket inwardly and outwardly and having a limited movement, and a. clutch mounted onthe rock shaft and cooperating with the tripping lever whereby the rock shat't .may be rotated by the tripping lever to release the door 3. ln machine ot the class described,

. the `combination oi" a boom, a bncli-:et having a carriage movable along the boom, said bucket being also provided -witl'l an outlet and having a hinged doen-a rock shaft mounted on the carriage and having a Vcam actuated arm, and crank arm connected with the hinged dooiand'arranged to be carried beyond the dead center for locking the door in closed position, a tripping mechanism comprisi g a tripping lever pivotally mounted on the rock shaft and adapted to be connected with a means for moi-:ing the bucket inwardly and outwardly and lie-.ving` a limited movement, a sleeve to the rock shaft, said sleeve and tripping -lever having cooperating -means whereby the tripping lever is adapted to rotate the rock shalt for releasing the door whenthere is an inward pull on the tripping lever.

el. ln a machine ot the class described, the

combination ofV boom, a bucket. movable along the boom and having an outlet and provided witha hinged door, lockingmechanism Jor holding the door in its closed position comprising a rock shaft having'a 'cam actuated arm, and a crank arm connetted with the hinged door and adapted toy be carried to a position beyond the dead center't rholdingf the door in closed position, tripping mechanism comprising a tripping lever mounted on the rock shaft `-`fned to beconnected with the means for movingthe bucketinwardly and outwardly, clutch lined to the' rock shaft adjacent the ever., said clutch and lever having cooperatineans for causing rotation otitis rock l ist to release the' door when the tripping i is .moved inwardly, and. spaced means -.ted at opposite sides oi the tripping ver for limiting the pivotal movement erect. v 5. ln a machine of the class described, the combination or'1 a boom, a bucket movable along the boom and having an outlet and provided with a hinged door, locking mechanism for holding the door in its closed p sition comprising a rock shaft having a cam actuated arm, and a crank arm connected with the hinged door and adapted to be carried to a position beyond the dead center for holding the door in closed position, tripping mechanism comprising a tripping lever mounted on the rock shaft and deand dei v Ll 'elle walls forming stops for limiting the move-v ment of the tripping lever.

6. ln a machine of the class described, thek combination of boom, a bucket movable along the boom and having' an out et and provided with a hinged door, locking mechanism for holding the door in its closed position comprising a rook shait having a cam actuated arm, and a crank arm connected with the hinged door and adapted to be carried to a position beyond the dead center for holding the door in closed position, a tripping mechanism comprising a tripping lever mounted on the rok shaft and designed to be connected with a means 'for moving the bucket inwardly and outwardly and provided with a head having segmental recesses forming laterally projecting lugs and sleeves iiXed to the shaft at. opposite sides of the tripping lever and having segmental recesses receivino` the said lugs and forming solid portions cooperating with the said lugsior rotating the rock snait and for also oscillating the tripping lever to carry the same to the 'forward limit of its swing when the locking mechanism isoperated to close and lock the door.

7. In a machine of the class described, the combination of a boom, a bucket having a hinged door at the bottom, a carriage movable along 'the boom and secured to the bucket and provided at opposite sides with shoulders formed by approximately inverted L-shaped members, Aa rock shaft extending across the carriage and journalled on the said shoulders and provided with crank'arms and with' cam Aactiuited arms, the cam, ac-

tuated arms being arranged to engage thev shoulders ior limiting the movement of the rock shattwhen the crank arms are carried to a posit-ion beyond the dead center, means for connecting the crank arms with the hinged door, and ya cam located in the path of the crank arms.

.8. In a machine ot the class described, the combination of a boom, a bucket having a hinged door at the bottom, a carriage movable along the boom and secured to the bucket and provided at opposite sides with shoulders formed by approximately inverted L-shaped members, a rock shait extending across the carriage and journalle-fl on the said shoulders and provided with crank arms and with cam actuated arms, the cam actuated arms being arranged to engage the shoulders for limiting the movement of the rock .shaft when the crank arms are carried to a posilUfi tion beyond the dead center, means for connecting the crank arms With the hinged door, and a cam consisting of an approximately inverted Unshaped member saddling the boom and provided at opposite sides thereof With laterally projecting fianges located in the path of the cam actuated arms and having inclined portions and a rear approximately horizontal portion, said cams being adapted to actuate the rock shaft to close the hinged door, lock the same and maintain the same in locked position While the bucket is in charging position.

91. In a machine of the class described, the

combination of a boom, a bucket movable along the boom, means for supporting the bucket, a clutch carried by said supporting means and movable along the boom with the bucket, said bucket being also provided with an Youtlet having a movable door, locking mechanism for holding the door iny its closed position comp-rising a rock shaft and-means controlled by the rock shaft for holding the door in its closed position, and a tripping lever, said tripping lever and rock shaft being provided With cooperating means whereby the tripping lever adaptedL to rotate the rock shaft for releasing the door.

10, In a machine of the class described, the combination of a boom, a bucket movable along the boom, means for supporting the -bucket a clutch carried b said su) )ortinlr 7 b means and movable along the boom with the bucket, said bucket being also provided With an outlet having a moi/'able door, lock ing mechanism for holding the door in its closed position comprising a rcck shaft and means controlled by the rock shaft for holding the door in its closed position, a tripping lever mounted on the rock shaft, and a mem- .ber fixed to the rock shaft adjacent to the controlled by the rock shaft for holding 'the door in its closed position, a tripping lever mounted on the rock shaft, and a sleeve fixedV to the rock shaft and having a segmental recess receiving the same, said sleeve being arranged to be engaged by the tripping lever for rotating the rock shaft to release the door.

12. In a machine of the class described, the combination of a boom, a bucket movable along the boom, means for supporting the bucket, a clutch carried by said supporting means and movable along the boom with the bucket, said bucket being also provided with an outlet having a movable door, locking mechanism for holding the door in its closed position comprising a rock shaft and mean-s controlledy by the rock shaft for holding the door in its closed position, trippingl mechanism comprising av tripping lever mounted on the rock shaft and provided at opposite sides with laterally projecting lugs, and sleeves fixed to the rock shaft and having a segn'iental recess fixed to the lugs and having solid portions cooperating Withv the lugs whereby the tripping lever is adapted to ro tate the rock shaft to release the door.

13. In a machine of the class described, the combination of a boom, a bucket movable along the boom and having an outlet provided with a hinged door, locking mechanism for holding the door in its closed position comprising a rock shaft having a camy actuated arm, and a crank arm connected with the hinged door and adaptedto be carried beyond dead center' for locking the door closed, tripping mechanism comprising a tripping lever on the rock shaft cooperating with means for kicking the crank arm over dead cen-ter to release the door when pulled in one direction, the said lever working in a slot having opposite Walls forming stops for limiting movement of the tripping lever, a cam cooperating with the cam actuated arm to rotate the rock shaft, said camV beingplaced on the b oom soi as to cause the trip'- ping lever to engage the forward Wall of the slot just prior to the bucket reaching load'- ving position, and maintaining such position until the bucket starts its rearward travel.

In testimony whereof I have hereunto set my hand.

HUBERT EVERIST.

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