Патент USA US2128778код для вставки
Aug. 30, 1938. A ' c. s. JOHNSON MATERIAL HANDLING 2,123,778 APPARATUS - Filed June 9, 1957 24 ' _ s Sheets-Sheet "1 G} (0 212a)” vm a Char/es Jgjoh'n?on ‘ A Ahg. 30, 1938. ‘ ‘ c. s. JOHNSON 2,128,773 MATERIAL HANDLING APPARATUS = } Filed June 9, 1937 ' ‘s Sheets—$heet 2 /8 ' INVEL'NTQQL Char/es SQ/oh son ' c?TTowEp/s Aug» 30,. 1938- I c. s. JOHNSON , MATERIAL HANDLING APPARATUS. Filed June 9, 1957 2,123,778 ’ 5 Sheets-Sheet 5 m Chm/es S (‘fa/71750)’! . , m, f$1’ mTToquzys 2,128,778 Patented Aug. 30, 1938 'r'r oFFieE UNITED STATES 2,128,778 MATERIAL HANDLING’APPARAT'US Charles- s. Johnson, Champaign, 111. Application June 9,1937, Serial No. 147,172 5 Claims. (Cl. 212-81) Fig. 7 is a side elevation of the attachment The invention relates to material handling ap paratus and more particularly to such apparatus for hoisting and traversing quantities of such loose bulk materials as are, for example, used in 51 building or road construction and the like. The general object of the invention is to pro vide an improved form of material handling ap paratus which is of such character that a single _ set of tackles may be readily used for different 10 services such as moving and operating any one of a series of selectively available containers such as clamshell buckets, tank buckets, and the like, all without the necessity of unreeving the tackles or making other complicated and time-consum ing adjustments. A more speci?c object of the invention is to provide an improved form of demountable at tachment head for detachably securing material handling buckets or containers to associated 2 O operating and hoisting tackles. Another object of the invention is to provide in an apparatus of the type set forth a detach able connection between the container and asso ciated tackles in which no removable pins or separate parts are used, thus obviating the pos sibility of their being misplaced or lost. The invention also resides in the novel form of locking mechanism embodied in the demount able attachment head. 30 Further objects and advantages of the inven tion will become apparent as the following de ' scription proceeds and the features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and head‘applied to a tank-type bucket for cement or the like. For purposes of illustration and explanation of its various features, the invention has been shown herein as embodied in a material handling apparatus which may be used for conveying bulk construction materials of various types such, for example, as sand, gravel, and crushed rock. This apparatus includes as its principal elements a material container illustrated as a clamshell bucket it, a lowering and hoisting tackle H, a container operating and hoisting tacle i2, and a novel form of attachment head M for detachably connecting the bucket It to the associated tackle ‘ rigging. _ The clamshell bucket i0 is of conventional form and includes a pair of scoop-shaped shells i5 pivotally connected by a shaft l6 passing through a counterweight and pivot casting H. The outer ends of the shells l5 are supported for opening and closing movement by rigid arms I8 pivoted at their lower ends on the outer por tions of the shells as indicated at I!) and at their upper ends on the attachment head it as indi cated at 2!]. It will be understood that a dig ging-type tackle-operated clamshell bucket or other form of material grasping container may be utilized if desired. The associated cable rigging for the bucket Ii] 25' has been illustrated as of the well known “four line” type although other cable arrangements such as a “two-line” type may be substituted if de sired. In the rigging illustrated, the bucket it may be held or lowered in open position by the 35 forming a part of this speci?cation. . For a better understanding of the invention, tackle M including a hoist-and-lower-open cable 2i, as well as closed and hoisted in closed position reference may be had to the accompanying draw by the tackle 52 including a close-and-hoist ings in which—‘ Figure l is an end elevation of a material ' closed cable 22. These cables 2! and 22 extend downwardly from suitable pulleys ‘23 on a trolley 40 handling apparatus embodying the invention. Fig. 2 is a side elevation of the apparatus 2t, which may be mounted for traversing move shown in Fig. l but with the trolley mechanism ment on a horizontal I-beam track 25. One end 2ia of the cable M is anchored while the other omitted and the bucket in open position. end passes over a suitable power‘ actuated cable Fig. 3 is an enlarged side‘ elevation of the at‘ 45 tachment head and associated tackle pulleys drum (not shown), the bight of the cable being reeved through a block or pulley 26 fast on. the with a portion of the head brokenaway to illus head M. Similarly, one end 2284 of the cable 22 trate its interior construction. Fig. 4vis an enlarged detail sectional view along the line 4—4 in Fig. 3. Fig. 5 is an exploded perspective view of the 50 attachment head and its associated parts. Fig. .6 is a detail plan view of the attachment head included in the apparatus shown in Figs. 1 and 2, certain of the parts being sectioned along 55 the line 6-6 in Fig. 1. is anchored while the other end passes over a second power actuated cable drum (not shown) and the bight of this cable is reeved through blocks or pulleys 2'3 and 28 fast respectively on the head Ml and bucket it]. It will be noted that the lower pulley 28 is detachably secured to the bucket casting ll by a demountable connection designated generally by the numeral 29. 0 2,128,778 2. . In lowering the bucket 18 in open position, the cable 22 is slacked off to permit the bucket shells to open by gravital downward movement of the heavy pivot casting or counterweight H and the bucket is then lowered by unreeling the cable 2i. Having been thus lowered in open position on the ting lugs 38--4€l when the bucket 18 is hoisted in close and scoop up'a load of the material by loaded condition is'obviated by the direct connec reeling in the cable 22, thereby raising the block tion between the head-section 32 and pulley 21. 28 until it approaches the associated upper block 21 whereupon further reeling in of the cable 22 will cause the loaded bucket to be hoisted. The trolley 24 and its associated mechanism may be traversed along the track 25 by suitable travers Thus, the strain on the tackle l2 does not have 10 is that had with ordinary four-line clamshell buckets and consequently, it is not believed to require further detail. ‘ In order to facilitate ready detachment of the bucket I0 from the associated tackle rigging, the head I4 is constructed in two separable head sections 32 and 33 which are demountable and 2,5- angle of, say,rninety degrees, the lugs 40 are moved out of engagement with the grooves 38 so that’the head~sections may be moved outvof en Cl gagement (Fig. 5). Undue strain on the inter?t top of a pile of material, the bucket is caused to ing cables 38 and 3| or otherwise moved or han dled as desired. The operation so far described 20 the other hand, when the head-sections 32 and 33 are rotated with respect to each other through an may be detachably locked together as'a unitary structure. All of the tackleconnections to the head are made to one‘head-s'ection and all of the container connections to the head are made to the other head-section. It will thus be seen that in general the tackle rigging may be disconnected 30. as a unit from the bucket by simply detaching the two head-sections 32 and 33 and connection 23, thus obviating the necessity of unreeving the tackles. ' In the preferred construction illustrated, the 3.5. head-section 32 is generally cylindrical in shape ~ While the associated head-section 33 is annular and fits about the ?rst section in telescoping re lation. Each of the head-sections is preferably made in the form of a heavy metal casting. An 40 upper end wall 34 of the cylindrical head-section '1 32 forms a support to which the pulley or block 28 is rigidly secured (Figs. 3 and 6). This end Wall 34 also supports a pair of roller-type guides 35 for the cable 22. In addition, the head-section ' 45 32 constitutes a protective housing and support for the upper pulley 27 of the container operating to be borne by the lugs 38-48 but is transmitted directly to the upper head-section 32 rather than through the lower head-section 33 to the upper head-section. Locking of the head-sections in assembled re 15 lation to prevent a disengaging movement thereof is effected by a pair of manually operable bell crank levers 42 pivoted on laterally projecting ears 43 on the head-section 32. When inrtheir lowered position (Fig. 3), the lower ends 43 of 20 these bell crank levers 42 enter slots 38a. in the lugs'38 preventing rotation ofthe lower head section 33 with respect to the head-section 32. The demountable connection 29 between the tackle pulley 28 and bucket counterweight ll includes a plurality of inter?tting projections which maybe releasably‘locked in engaged po 2.5 sition. Thus, upon reference to Figs. 3 and 4, it will be seen‘that a pair of laterally extending segmental shaped ears $4 on bracket 45 of pulley 23 ?t within a complemental annular recess 46 in the top of the casting ll. Segmental projec tions 41 on the casting ll overlie a portion of the top of the recess 46 so that when the ears 44 are disposed beneath these projections (as shown 35 in Fig. 4), the parts are locked in engagement, but they may be readily separated upon rotating» the cars 44 into registry with the openings be tween the projections 41. A spring pressed latch 48 carried by the pulley bracket’ 45 enters a regis 40 tering hole in the casting 17 when the ears 44 and projections 47 are in engagement thereby releasably preventing "relative rotation ‘between the interlocking parts. In the construction illustrated, the separable elements of the attachment head l4, as well as of tackle, this pulley being journaled within the the demountable pulley connection 29 are re hollow head-section on a shaft 36. 'The annular leasably secured together by devices which in clude only cooperating parts which arérperma nently secured to their respective’ associated‘ele 50 outer head-section 33'is provided with a central 50 opening 3? of ample diameter to permit the pulley 28 to pass‘freely therethrough when the head sections are disconnected. A pivotal support for the upper ends of the bucket arms i8 is formed by laterally projecting trunnions 25 positioned on V 55 the sides of this head-section 33. ' A rugged, strong, and easily manipulable con nection between the head-sectionsr32. and 33 is formed by suitable inter?tting projections there on which are adapted to be moved into and out 60 of engagement by a relative rotational movement of the head-sections’ (Fig. 3). Thus, heavy up standing bifurcated lugs or projections 38 are formed on the annular head-section 33 at dia metrically opposed points thereon, these projec merits. Thus, no separate slip-pins, ' bolts, ‘or the like are included.’ Such ankarrangement in which none of the attachment parts can be iso lated from the main elements is particularly ad vantageous as-it prevents vexatious delays due to ‘losing or'misplacing such partsa ' bucket 10, in order to substitute anothentype of container or for any other reason, this operation 60 may be quickly and easily performed without the necessity of changing the reeving of the asso ciated tackle rigging. Thus, thepulley 28 is de tached fromkthe bucket, and the head~sections 65 tions presenting grooves or notches 39 ontheir ' 32Hand 33 are disengaged. inner faces which are adapted to receive comple» mental projections on the inner head-section 32. These latter projections on therhead-section 32 are illustrated in the form of lugs 43 on an annu 70 lar integral collar 4| extending about the lower end of the inner head-section, Upon reference to Fig. 5, it will be seen that the axial width of the collar 4| is increased at the points at which the lugs 40 are formed so that the latter ?t snugly , within the grooves 39. when aligned therewith. _On. a ‘In. the operation of the apparatus described above, if it is desired to detach the clamshell Detachment of the 65 pulley 28 is e?ected by releasing the latch 48 and then rotating the pulley 28 relative to the, bucket through an arc of approximately ninety degrees to disengage the ears 44 from the projections 41. The operator may then disconnect the head-sec tions by grasping the bell crank levers 42 and. swinging them upwardly to disengage their lower ends from the bifurcated lugs 38 and subsequent-I 'ly twisting the head-section 32 by means of the lever handles to rotate the lugs 48 out of engage 3 2,128,778 ment with the grooves 39. The detaching opera sembled relation as a unitary structure. 2. In a material handling system, a demount associated apparatus and at the same time, the construction is such as to preclude accidental disengagement of the parts in the course of oper able material container attachment head com prising, generally annular head-sections arranged tion. Moreover, as was previously noted, the possibility of loss of any of the attachment parts is also precluded. 10 detachably maintaining said head-sections in as tion is thus quickly and easily performed without material alterations in the arrangement of the in telescoping relation, and means. including pro ‘jections on one of said head-sections adapted to be moved into and out of complemental grooves on the other of said head-sections upon relative rotation thereof for detachably maintainingsaid 10 In the event that it is desired to utilize a differ ent container of the same or a different type, it head-sections in assembled relation as a unitary may be'readily attached to the same tackle mech anism. For example, it may be desired to utilize the tackle mechanism for'purely hoisting- pur structure. 3. In a material handling system, a demount able material container attachment head com 15 poses as distinguished from operating a material grasping container such as that described above. Thus, in Fig. 7, a cylindrical metal bucket 49 has been illustrated such as is used for conveying quantities of .cement and the like. This bucket is provided with an attachment head-section 33ab which is substantially identical in construction prising, generally annular head-sectionsarranged 15 in telescoping relation, means including projec tions on one of said head-sections adapted to be moved into and out of complemental grooves formed in bifurcated spaced projections on the other of said head-sections upon relative rota 20 tion thereof for detachably maintaining said with the head-section 33 described above except head-sections in assembled relation as a unitary that it is provided with laterally extending arms structure, and means including levers pivoted on 50 rather than trunnions 20. The bucket 49 is ' said head-section movable into and out of the supported from these arms 50 by suitable ?exible openings in said bifurcated projections for lock 25 25 cables 5|. It will be seen that the head-section ing said head-sections against relative rotation, 32 may be inserted within the head-section 33a said levers being provided with manual operating and then rotated and locked in position therein handles operable to move the same into and out by the bell crank levers 42 as heretofore described. of locking position and to rotate said one head 30 section. 30 When using a container such as the bucket 49, 4. In a material handling apparatus, a. clam the block 28 is hoisted to the elevated position in dicated in Fig. 6 where it will not interfere with shell bucket including a pair of shells pivotally the bucket. It will be understood that a large variety of other types of containers may be util 35 ized, these containers being provided with suit able attachment head-sections for cooperation with the head~section 32. Although a particular embodiment of the in connected to a central counterweight, an associ ated operating tackle including a vertically mov able pulley, means including inter?tting projec tions on said counterweight and pulley for de tachably connecting the same in operative rela tion, and means for releasably locking said pro vention has been shown and described in some , jections against disengagement. detail for purposes of illustration, there is no in tention to thereby limit the invention to such embodiment but, on the other hand, the appended 5. In a material handling apparatus, a clam shell bucket. including a pair of shells. pivotally claims are intended to cover all modi?cations within the spirit and scope of the invention. I claim as my invention: 1. In a material handling system, a demount able material container attachment head com-' prising, generally annular head-sections arranged in telescoping relation,_ and means including an 50 annular integral collar on one of said head-sec connected to a central counterweight, as associ ated operating tackle including a vertically mov able pulley, means including inter?tting projec tions on said counterweight and pulley movable 45 rotatively into and out of engagement for de tachably connecting the same in operative rela tion, means for releasably locking said projec tions against inadvertent relative rotation, an at tachment head having an aperture therein ac tions having laterally extending portions adapted commodating said pulley for vertical movement to be moved into and out of complemental grooves disposed at spaced points on the other of said therethrough and means for operatively connect ing said shell and said head. head-sections upon relative rotation thereof for CHARLES S, JOHNSON.