US1584901A - Automatic metering machine - Google Patents

Description

May 18 1926.

May 18,1926. n A 1,584,901

v B. S. SUMMERS AUTOMATC METERING MAGHIfNE Patented May l, i926,

@essere s erwies CF este@ "steelt weissem AUroiyie'rIo Merten-ie greci-trim.

Application filed Novemher it is not clogged or rendered*inoperative or inacciiite i 'fthe' passage 'therethroiighfn of ""cles'i' considerable sijze ('t-eoinprises eigliing heeinf'siippo' ig at its' respe'ctive i ends automatically di iipiiigq sda-le'v p ans tol ivliich the streelinfoff c Vter el is a'lte'rnfit'e ly fed. As eachl scale'paii-reee-ives 'pre determinedfloedthe hearii ie rocked todi'nnp they` sainey and the stream ot 'iinateri'al is shifted to theopposite pan which 'siinilarly rocks the hez'iin vv`when" its'lod v is complet'- ed,*"duinpiiig thezy load and transferring' the feed tothe first mentioned pan.lr` A piel -eried embodiment o'i2 i' my*Y iiiyer'ition l is f de-r scribed inthe @following` speeilication taken in' connection with* the accompanying dra-W- ing forming ma? pair't 'ithereoff "it isV to he',y nn'derstoo'd," however;y 4that the specific disclosure: isforthe purpose of exeinplin licatio'n" only and 'that-the scope of the invention is deiied l'in the 'following claims iiiyhich haye endeavored to distinguish it 'troni the prior artso iarfzis'known to ine Without, however, relinquishingor abandoning" any portion orV featiire'thereof.'

in the draWingfFigL lf is a side elevation otthe'preferred:embodiment of my "invention; Fig; 2 a'siinilai View of a detail partly in yertical'section; Fig. 3 van 'end elevation thereof; Fig. 4 a. vertical section of a detail on en enlargedscale; and Fig. 5' a. `partial side' eleviition similar to l of a slightly inotlitied forni of the device.V i

in the views each'eleinent is identilied by the saine reference charcter Wheieyer it oceurs.- l Referring nowto the orin ot the invention shown ini l'to tfi'ncliisiye, 6 is the scale heaiii, the l'iiife edges Z of'which are ulcruiiifed at oii Ysiiittihle' seats car iedfoii the standard 9. 'n The' seele i" i in this forni oi' the appa tii rigidly coliiiiected :byst'raps 1 2,

15 effi @fe dinge c le s we;

e, lege. serial no. 593,252.

to dump the contents ot the respective pans. hinged side or door'isprovided with a latch-har il? piyotedto the door at i8 and notched zit-19 'to 'engage a pin 2O on a. bracket 2l secured tothe scale' pain VVhen-the latchbariis inengagement with the pin 2O as seen atthe rightr -in Fig. ll'the vpiyoted side' or dooi` l5 isflocledin closed fposition.' AJ stop 2113 seciiredto one `of the' standards projects into the 'pzith described `by the latch bei* when the; bea'intilts f tofloiyer the pen to "which sti'ch har-is'ffst'tached, "Je that the parier hiicletvp descends the latch!bar?l "is raised to door to ld'ropopen to the "position sho-Wn" at the' lett inFiglL It will he understood that the etres-inici' inate isi'edVV into the 'pen which is'iii the raised 1position andwhen the latterA has vreceived"itsiiillr"charge it swings doivi'i'werdly end the doorfisreleesed todis# charge its contents 'i `f HThe inttteiial from the hopper 25 or other feeding'nieans is "directed" intdthe one 'pan or-the'oth'erg accordingV to whichl is Ain the raised position, "piyoted chiite 26. -This chiite-is joiirnal'ed betweenthe standards the-f-iolpjerA ends thereof arid'ahoye the heain as at 527, so that it may "swing" from the inspndiifi'ginclination in'l the 4:opposite directiii.` As shown inFigs. 2 4and 3, the journal i ofthepiyote'd chute'l 26 isprovided rwith" a Y fork 28,'th'e loiifur'c'ated Yend of which en'' gages'acylindrical loos-s 29on a bracket 30 seciired tothesca'le beam 6. shown', the cylindrical Iboss 29 trikes the forni of n.

rollery joi'irnaled on a hearingxlf The cylinhe'- prvented "from descending i sufficiently to open ,itsv 'discliaiige' door'iintil it hais re'- ceived"its'coiiplete"dos@4 and iti isl also desiralole'iii 'th`x` fin `ith dem ties' rEhe roller the cam tace 35 oit a vertically i'uovable cfzin 38 which is pivoted on and supported by a lever il?. liever 37 is pivoted at $8 upon arin. 39. Si link t() con* iectr-e the leg; Ail, oit' the cani with arm 39 .o tha;` the cmi capable ol ris'ng and 'liallinh' with the lever 37 but is ma ntained iu substa itially horiyoutal position. ln order to provide a slight lateral adjustment -for tain S6, arm is pivoted at i3 to standard Q and its upper end projects bctivecn set-screws 45. tapped into suitable bosses on said standard. The face oit the cam is `formed with a slight central depre. .lion GO tor a purpose which Will appear.

("ihviously as Whichever pan is being lilled receives its load it tends to descend by gravity, but this tendency is resisted by the cam actingthrough roller 3l, arni 33. the journal et the reversible chute, arm 2S, roller 2i) and braclfet 30. 'lfhe descent oit the cani is opposed a series ot Weights 48 depending` troni the end ot lever 3? opposite that which supports the cani. The Weights il@ are to sonic extent offset by a iveigil'it 50 adjustable upon the rightdiand arm ot lever 37. By adjusting the last named weight the loadA in a pan necessary to reverse the position et the scale beam and chute may be determined. Ubviously as a load a .cunnilatcs in a pan it urtii-.iately reaches a point Where the pressure of the roller Slt depresses the cam. The roller7 therefore, rolls along the ain as the Weight increases and acting` through the beam and connection to arm 38 overcomes the Weight distribution on the lever 37, and after the roller 3ft reaches the depression the resistance being thereby relieved it quickly passes the center. The further action et the Weighted lever tending to raise the cam its the swinging movement oit arm 33, the reversible chute and the scale beam, so that the latter part et the reversing' inovenie `t is tairly rapid and positive, easily providing the necessary Ytorce to unlatch e door ot the full pan or pocket to permit the contents thereoit to escape.

is heretofore stated, it is desirable that the rapid 'j'ced ot material be checked as the load ot a pan approaches coinpretion. and tor this purpose the construction ol' the machine such that t Wards the end ol a filling operation the reversible chute 2G gradually approaches the horizontal and the delivery nozzle is suiciently close to the chute tor the purpose, the material zurciunulatino; on the pivoted chute blocks the delivery ot additional material from the nozzle temporarily. ln order that the mover-nent of the Chute toward the horizontal may be gradual the arrangement et the Weights is such that they are successively UVA L on. The initial downward movement ot the cani 85 is therefore resisted only by le uppermost weight 48 but as it coninues to rise it successively picks up the `ther weights in order. Thus the chute 26 pproaches the horizontal step-by-step unil arm S3 reaches the central or vertical iosition, after which the reversal ot position ot chute 26 and the scale beam 6 is rapidly accomplished. Preferably the cam ytace is cut aif'ay at 60 to permit the unopposed movement ot the arm 38 through the centre-.l portion ot its arc.

The operation oft the device has been explained in connection with the description oi" thc construction out may be sun'nnarized as follows: The material to be weighed is ted into the hopper and any suitable means (not shown) may be provided tor Y,il-*ing` it away from the Weighing machine. lilith the parts in the position shown in k l the material to be weighed slides dawn chute 26 in a stream into the pocket or pan ll at the right ot the machine and acciunulates therein. its the Filling ot this pau approaches completion the Weignt ot the load exerted on the beam (3 and transmitted through parts 29, 2S, 27, 33 and Sil, dcpresses the cani 36. causing lever 37 to litt, the iveigrhts 48 seriatim, until ultimately the load in the pan is sutiicient to torce the roller El past the center ot' the cani,

the load on lever 37 operating` a ttor u'hich through the rain assists to complete the reversal ot the chute and beam. As the full pan descends the door is tripped and opened as heretofore t cscribed, permitting` the contents to escape. As the other pan7 l0, rises the door l5 thereof swings by gravity until the latch bar catches and holds it iu closed position. is the chute 2G is now inclined downwardly toward the lett the tillii ot the pan 'l0 talles place in the saine manner as has alreazly been described iu connection with pan ill, and when pan l0 is filled the positions ot the parts of the inachine are reversed in a manner Wnich will he readily understood.

As heretofore observed chute 26 turned toward the horizontal as the filling of a pan approaches completion and as it approaches the horizontal the llow of the inaterial slowly Vdiminished until just prior iS to the completion oit' such a load as will shift ,meneer the scale beani and the lpans carried thereby, the stream dvvindles to a nier-e trickle.

By the operation of the scale substantially equal amounts ot the chips or other divided matter are alternately dumped by the respective pens and inay beocerried away in any suitable conveyor provided for the purpose, or they inay be permitted tov ac niulae in suitsble receptacle. By counting the reversals oi" the benin and multiplying the result bythe Weight constituting u le load, the total Weig" t` or" -inaterial passing through the apparat 'lhe reversals nia-y 01 course be counted by an observer. lt is preferable however to record thein on an automatic counter such as are in connnon use. it 82 l l have indicated a counter so located as to be actuated by the moveinent of the reversing chute 26.

is the rigid connection ot the pockets l0 and ll to the beani just described tends to inove the center .et gravity oi' each pocket outwardly as it is filled it is preferred for more accurate Weighing to hang the pans on the beam as shown in Fig. 5. For this purpose the benin (i is provided with knife edges ZO and the supports 12', 13 are Provided with a seat Tl engaging the lrniite edges, thus permitting the pan to swine'. ln order, iovvev i', that the pan when en'ipty inay tilt outwardly to enable the door l5 to close by gravity, avveight Z2 is adjustably inounted on a bnr projectingv inwardly troni the pocket or pan. Except in this respect the construction is as described'in connectionk with Figs. l to ll.

l claim:

l. ln an apparatus ot the class described a support, balanced beain tulcruined on the support, pans carried at the respective opposite ends of the beam, a rocking chute pivoted above the bearn and adapted to be tilted to discharge into either of said pans, connections between the beam and chute whereby When the benin is tilted in one direction the chute is tilted in the other, yielding means for holding` the chute and benin when tilted in eitherdirection but releasing thein. on the completion of load in the elevoted pan.

2. ln a device ot the class described a balanced scale beain, a pair of pans carried al the respective ends thereoi, a support upon which the benin is ulcruined, a pivoted erin, connections between the beam and arin whereby the tilting of the beam sii/ings the erin, a cani arranged in the path of the arin, ineens for forcing the cani toward the pivot oi' the arin, the construction being such that the cani opposes the inov nient oi the arm Jfrom either extreme position toward its central position and assists the inovernent troni said central position to an extreme position.

ln a device of the class described a balanced scale beain, a pair ot pans" carried at us linay be escertaiined.V

1; e iged right angles to end le rrr tbe centiel line of the arc of inovenient ot `id erin, ineens on the arm engaging t bearing Jface of the cani end ni'ovable along the latter and yieldingF ineens norn-ally en ting pi f'sure on the carin toward the pivot ot' the arin.

d. ln a device of the class described a. balanced scale beam, a support on which it is tulcrunied, scale puns connected to the respective ends oi the benin, an arrn 'for yieldingly holding the beam in tilted position in either' direction, said arin being fulcruined in said support, a connection between the arn'i and beani whereby the tilting inovenient ot the benin under load swings the arin through a limited arc, an abutment on the arin, a. cani having a rectilinear bearing edge arranged in a line perpendicular to the central radius ot the arc of said arin and engaging the abutment on the arni, a lever to yieldingly support the cani against the pressure of the abutment on the arni, and ineens for actuating the lever to force the cuni toward the arm.

5. In a device of the class described a support, balanced beain 'ulcruined on the support, scale pans on the respective opposite ends ot the benin, a pendulum erin, a pivot from which the pendulum arln hang", the arin beingr adapted to swing through the arc upon opposite sides of the vertical line through its axis, a roller on the end of the arin, a cern having a level upper edge engaged by the roller and along` which the roller is adapted to travel, and ineens for yieldingly pressingthe cani toward the pivotal support ot the arin whereby the cani opposes the downward suing of the arin in either direction.

S. ln a device oi the cli/iss described a bal'- anced scale benin, a pair ot pans carried at the respective ends thereof, e. support upon which the benin is iulcrun ed, a pendulum arin pivoted on Said support, connections between the erin and beam whereby the tiltu ing ot the beain moves the arin, a cani hnving a substantially horizontal bearing surface engaging the arin, a lever on which the cani is mounted for vertical inoveinent and Weights on the lever for forcing the cani into engagement with the arm.

7. ln a device olI the class described a balanced scale beain, a pair ot pans on the respective opposite ends thereof, a support on which the benin is fulcrunied, a pendu hun arin pivoted on the support and savinging a substantially equal distance on op-

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