US1661244A - Loader for cement mixers - Google Patents

Description

March 6, 1928.

C. J. WESTLING LOADER FOR CEMENT MIXEHS Filed Feb. 18, 1924 3 Shee'ts-Sheet 1 March 6, 1928.

C. J. WESTLNG LOADER FOR CEMENT MIXERS Filed Feb. 18, 1924 3 Sheets-Sheet 2 C. J. WESTLING March 6, 1928.

LOADER FOR CEMENT MIXERS Filed Feb. 18. 1924 3 Sheets-Sheet 5 v frame at Patented Mar. 6, 1928.

CARL minimums,- or wA'rER oo, owa, Assrenonro eons'i nuc'rro'n' m ns COMPANY, 01* WAIEBLOO, row-e,

'A-ICORBOBAVTION'V or IOWA. 1

oADnn ronfjcnmnnrimrxnnsf" v Application filed l'ebruary 18, 19124. sermiw ;69:44:08. I

' This inventionjrelatcsto a hoisting device for charging cement mixers and has forjits object the construction of such a device which shall be simple and ,econimical to '5 manufacture andwhich may be easily adjusted for transportation and which shall befof improved The invention is exemplified inthe comblnation and arrangement of parts shown in.

lo the accompanying drawings and described in the following Specification, and it is more particularly pointed out theappended claims. 5 e

In the drawingsv Fig. 1 is anend elevaticn-of aftruck. hai

15. ing a cement mixer mounted thereon and shows the charging device in. side elevation; 7

looking from the right in Fig. "2 is a View Fig. 1 with the skip in elevated position; zo andc f Figs. 3, 4, 5 and 6 are fragmentary drawingsshowing details.

'As illustrated .in

' meral 10 designates a truck body havingia 26 cement mixer 11, which maybe of any approved construction, mountedthe'reon, A

pair of uprights 12 are "supported on the the loading side of the cement mixer and these uprights have suitable braca0 ing 'members13 to r provide the; necessary strength and rigiditytothestructure. At

beneath the hoisting skip 23 and is' guided through fair leaders '24: at each side of the skip and through eyelets 25, secured to the 5 and 6. The skip 23 has its forward end 26" inclined upwardly Q provide ,afdischaf e construction and operation. 7

the drawings I the nu- I about the front end. provided at one end ioffthe ends attached respectively to't-he' drums 21. The central portion-of the cable 22' islooped' lower corners of the skip, as shown infFigs,

spout and is preferably provided with'reinforcing angle bars 27i'secured to the skip "alongits top lateral edges. e

;At the forwar'dend f each jangle bar 27 is a bearing member 28 inwhich atransverse Shari-729a journaled." It will'beseen'from Fig. Q'that the spout portion '26 of the'bucket Y is inclined inwardly away from the forward ends of the angle bars- 27 The bearing members 28"'are extended forwardly to form hooks 30 which engage the inner face of a H cross bar3l toprevent rearward movement on of the forward end of the-skip when it is in dumpingfposition; as shown in broken lines in Fig.1;- p

' The shaft 29 is provided with a pair of rollers 32 which travel ontrack members 33. These track membersconsist of a pair of stitutes the runway for'the rollers and the side "flange constitutes the guide." The track angle bars, the lower flange of which conis openat-thetop-and is inc'lined at an angle to pern1itthe.skipto travelon the -track,

without the necessity of any retainingfian'ge for the ,top' of the rollers. "A secondj set of' rollers 34:; is mounted on a transverse shaft 35 journaledin bearings 36 secured tothe I I bottomof theIskip slightly in front of the The lower ends of the tracksi'33 jare conguides 25'', forlthecable. 22. i The cable 22'is disposed sufficiently close to the front of the ski '.that force on the cable will cause the bucketflto ascend the trackway'so long as it is free 'to do so without tipping upwardlyf nectedbya cross-bar 37 and the bottom of the skip, is provided with a stop 38*t ollimit the downward movement of theskip-ba'r. The upper; ends of the tracks'33 are pro-v vided with brackets 39 which-are pivoted at 40 to stops 41 for engaging therollers 32 and arresting their upwardmovement. The construction of the stops is best shown in- Figs. 3 and i; each stop being provided with a curved fian'ge42 which forms a po'cket'for the stops in place on'thejcross bar.

receiving the roller 32 at the upper e'xtremv ity' of"itsjtravel. The stops are provided with flanges '43 which fit against v the crossbarj31 andbolts 44' andf4 5 are used to secure i 1 It will b seen rm ""Fig. 2am; when the "skipfreaches itsupper limit of moveme t it I hooks which .are swunginwardly; and downwardly into contact with the inner face of the cross-bar 31.

A pair ofrods 16 are pivoted at 47 onto.

each of the track rails 33 and the inner ends of therods are hooked into engagement with the support for the bars 12, as shown at 18. Cotter pins. 49 may be passed through the hooked portions of the rods to retain them in position. When it. is desired to transfer I the mixer to another location the skip 23 is tion' shown in Fig. 1.

raised to its upper positionand the rods 46.

are unhookedpermitting the track 33 to be swung upwardly into the broken-line posi- The rods 16 are then hooked into the projecting ends of angle bars 50 connected to the uprights 12 near their upper ends; The tracks will then be held in their elevatedposition and prevent descent gof the skip 23 so that theentire; device may be-readily transported to anew location.

' In orderthat the parts will function prop- .erly on'an open track the centerof gravity of the skip whether full orempty is between theline ofpull of the cable 22, and the track 7 and'may be in the rear ofthe lower roller. Thesline-of pull ofthe cable is substantially parallel with the track orslightly converging toward the'track atits upper end. The

.point of applicationof force to the skip, in order to, cause both rollers to travel on the track until the top rollers. are stopped by abutments a1. is such thatthe moment of the rope pull about the axis of therear rollers is greater than the moment of the weight of the load backwardly about saidaxis. At

the same time the moment-of the weight of the load, about theaxis of the front wheels is greater than the moment of the force of the cable. so that the skip travels. up the track and is not turned aboutthe front axis until the front rollers are stopped by the p abutments 41. It will be seen from F 1 that .whenthe skip is turned into discharge position .the point of attachment of the,--cable 22 is'brought up to andsubstantially on a level vwith the top winding surface of the drums.

At the same time the discharge opening of the skip isbrought into registrationwith the mouth of the'mixer butdocs not projectinto the mourn; If desired the openings in the fair leader; 24: may be elongated to permit the cable .to assume a straight line when the skip "is in discharge position. .It will be also :itp' parentthat' the tracks 33 may be elongated if occasion requires, orprovided with de-- tachable-extenslons for loading from below 1. The combination-with a: supporting. frame having a cement mixer mounted thereon, of a loading-device for 'said 'mixer comprising a pa r of spaced angle b'arseach having one end thereof connected with said frame andthe other end thereof inclined out- .wiardlyand downwardly away from said frame to constitute track, a skip mounted to] travel on. said track, saidfskip having spaced front and rear rollers, a;.cable attached to said skip in therear of theforwa'rd rollers thereof, a stop for arresting the for}- ward endof saidskip: adjacent said cementi mixer-to cause said skip to swing about the axis of the forwardrollers thereon to discharge material from said skip; into said mixer, and interlockingmeans'on saidskip and track to retainsaid track in position for transportation I with the 'rollersjrestingj on their-respective tracks. I: I 2. The combination with a frame having a cement mixer mounted thereon, of :an i'r'v clinedtrack having.its upper end attached to said frame, a skip having rollers for tIEtV? cling. on said track, winding mechanism mounted on said frame abovethe upper end;-

of said tr'ack,and a hoisting cable having its opposite ends attached to said winding IIieCllanism and having its central portion looped about said skip. I 1 s w 3. The combination. with a fraineihaving a cement mixer mounted thereon, of an" inclined track having its upper,endattached to said frame'adjacent said cement imixerand forward and rear rollers, hoisting fniech a;

having its lower end. spaced outwardly and downwardly, a skip arranged totravel along the upper face of saidtrziclgs'aid skip having nism mounted onsaid frame above the upper end of said track, and a cablehaving its'op posite ends attached to said hoisting Inecha" nism and having its central portion looped about said skip, said skip having fair leaders forsaid cable adjacent the upper sidethereof andhaving guides for said cable at the lower corners of said skip.

- l.v The combination with" a frame, of an inclined track havlng ltsupperend secured to said frame,a,skip arranged to travel on saidtrack, rollers onsaid skip, meansfor arresting the forward rollers oflsaid skip to cause said skiptoswinginto' discharge position, a hook member attached to'theflforwar'd end of said skip, and means on said frame for engaging said hook member when'saidskip is swung-into discharge position to-preve'n't rearward movement ofsaidfskip.

The combination wi 11" a frame, of an inclined track having ltsfupper end secured to said-frame, said track COIIIPII S IIIg aQ-PMI' of angular bars having flangesto provide runways and fittings mounted on said frame from said fittings. I 7 .cThe combination with a frame having 7 flanges on said fittings.

adjacent the upper ends of said angle bars, said fittings having flanges arranged to reg ister with the flanges on said angular bars,

the flanges on said fittings being curved'up' wardly to provide stops, and a skip having rollers arranged to travel on the flanges on said angle bars and; to engage the stop flanges on said fittings, to arrest the upper movement of saidskip and cause said skip to swing about the axes of saidrollers into discharge position.

6. The combination with a frame, of a a cement mixer mounted thereon, of a crossbar secured to said frame ad acent sa d cement mixer, a pair of fittings mounted on said cross-bar, each fitting having a flange" thereon curved upwardly to provide a stop, a pair of angle bars pivoted onto each 'of said fittings, said angle bars having flanges forming runways which register with the flanges on said fittings when said angle barsextend outwardly and downwardly from said fitting, a skip having rollers at its forward end for travel on the flanges onsaid angle bars, a pair of spaced hoisting drums;

mounted on said frame above said fittings, a cable having its opposite ends'attached to said hoisting drums and having its'central portion looped about sa d skip, and means for rotating said drums to wind the ends of said cable thereon to raise said skip along said angle bars and to swing said skip into discharge position about the axes of said rollers when said rollers engage the "stop 8. The combination with a truck having a frame mounted thereon, of acem'ent mixer mounted on said truck, a track comprising a pair of angle bars open at their tops to provide a runway, said angle bars being piv-,

' oted to said frame, askip having rollers ar rangedto travel on said. track, means for; hoisting said skip into an upper discharge position, said track being arranged to swing about its pivot into position to'eiigage the rollers on said skip when in its upper pos tion, andmeans for securing said track in its elevated and operative positions.

9. Thecombin'ation with a truck having a frame thereon, of an inclined; track pivoted to said frame, and a securing device clined position, saiddevice being arranged to hold said track in an upper inoperative positionfor transportation 10. The combination with a vehicle frame having a cement mixer mounted thereon, of

a pair of upright members at one side of said -frame', a cross-bar secured to said members,-

a pair of spaced fittings secured to said cross-bar and havingflanges thereon curved upwardly at their inner ends to form stops,

a pair of anglebars pivoted to sai'dfittings andhaving flanges arrangedto register with Y the flanges on said fittings when said angle bars extend outwardly and downwardly for detachably holding saidtrack in its informing an inclined track, a skip having j rollers arranged to travel onsaid track, the

top i of said track a being open to permitup; wardmovement of said rollers away from j said track, a pair of. winding drums mounted on said frame above said fittings, a cable 7 having its ends attached to said drums and having its central portion looped about sa d skip, means for rotating said-drums to'ra se said skip along said track and to tilt [said skip about its forward end todischarge'material therefrom into said mixer, a catch preventing backward movement of said' mounted on the forward end of said skip for skip when in discharging position, and a spacer bar for retaining said tracks in their inclined positiornsaid barbeing removably connected with said frame'and'arranged to engage said frame above said fittings to hold said track in an upper inoperative position. Y

on said track, acable'attached to said skip forf hoisting the same, the point of attachment being spaced above saidtrack to produce a forward and upward moment'about the axis of the rearmost roller to preventbackward tipping of the skip. and to cause the skip to ascend the track, and a hook for preventing rearward movement. of said skip while the latter is rotated about its forward rollers into a dumping position. k

- 12, The combination with a truck having a ceme it nixer'niounted thereon, ofatrac-k pivotally connected with said truck, a skip arranged to travel on said track, ineans for raising saidskip into elevated position,-and

means for securing said t-rack'in' an elevated position against said skip to hold said skip in elevated position for transportation;

In testimony whereofI have signed my name to this specification on this 15th day of February, A. D. 1924.

CARL J. WESTLING.

11. The combination with a concrete .mixer ofvan inclined-track leading thereto and open at its top face, a skip having Iongitudinally spacedrollers arranged to travel

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