US2669140A

US2669140A - Material handling device

Info

Publication number: US2669140A
Application number: US104869A
Authority: US
Inventors: Frank J Wood
Original assignee: ERWIN LOEWY
Current assignee: ERWIN LOEWY
Priority date: 1949-07-15
Filing date: 1949-07-15
Publication date: 1954-02-16
Anticipated expiration: 1971-02-16

Description

Feb. 16, 1954 WOOD 2,669,140

MATERIAL HANDLING DEVICE Filed July 15, 1949 INVENTOR. FRANK J. WOOD A TTOENEYS Patented Feb. 16, 1954 mmnmn'nmnnmonmon AI'ufliation may-rt, 1949, shame-10 1369 (on: an -5n Tfiis invention relates; t0 a materialilian'dling amraratizs=-= arfd method" suitable forfus'e in? conjimctlem with' rolling mills and" the: like; and especiallyte anarrarigtanrmt w-hereiri a bar 'be mg rolled T or shaped is turned' around: its axis lief-reit' is' fed to tlie next 'roll orpoint of'man-ip ula-tion;

In conjunction with the usual merchant mill practice,- especially where' bars are being-rolled whih are other than round in shape; the: bar must" be rotated a predetermined angle; such" as 190-; lr'etweenpa-sses: Tire tiar usualli -is' in heated condition at the time it musflb'e turn'ed so 'thait afdim'cult liandlihgproblem is presented. In

the past; the-turning hasusually'beewaooom'zv One of the" objects of the present l invention is'to provide 2; method and apparatus ir simplietying rotation of a=- bar about its" longitudinal axis.

One of the features of tlie invention artar r'angement adapted tO'WiIlIl a UM WIiiCIi both raises" and" turns the bar; the raising of tliebar *being'for the"-purp'os'e-'- ofraising the Selma-above the-tableor su ports during-the-turnin'g opera tion':

In" oneaspect; an aperture isprovi'ded 'inw a guide-and'a turning linkmeans -conn'ected there'- with operable to turn" the guide; raise tl'ie gxiil, and'thenagain lower'tlre guide'asflie bar reac'l'fes its turned position; The" bar" is--' then ready" to 'beremoved from the turning-guide" and moved to" tlie next point Wfiibh may" be -'th'e'-i next roll. Tlie link systemvcarr lie-operated.bymeans of a 'power' operatorwu'cli as a." hydraulic'pis'ton,

electriemotor; or'the likeandi-tlieerais'ing ortlie guifie can be accomplished by a" pivoted-T lever connected'to the guide:

In a preferred en'xlooclim'ent; tlie guide" has? a osei-Hatable: lever arm will'lbe: rotet'ewgaboutrl itsmm oint" as" the guide is" tinned. Astfie "oseil latable lever arm: approaches a mid position, which" can" be about mid-point of the turning operation: the guide holder will" be-- raised I upwardl'i; thusraising the-barabove-the tablewarface so" that the" bar can" be turned" with ease. The bar usually does not have" identical cross sectional dimensions in each", directionso that it is neoessaryto raisetlieibarfin order to-"turn the same "withea'se: It is. to beunderstoowfthat the" terms" vertical, downwardly ext'ending," raisingff etc; are "u'sed"in their relative" meaning and that the" devieecanbe arranged" tenanc tion in% different directions" than that described herein: I

The rais'lngmrefrably takes plaeerfluring the turning" but the movement could take" place in other. manners.

These and otlier" objeets; features and" advantages of'the inventionlwill 'b'ecome'apparent "from the following description and drawings which are merely exemplary:

In the drawings:

Figure Iis an elevation'view.

Figure'zds a; fragmentary elevatiomviewshowmg the apparatii in a partially turned positiofi'.

Figure 3: is similar to Figure 2 witli the turn completed."

Figure? isaschematldsideview showing one mannert'in which the apparatus may be used;

The: 'apparatt'ls" is" particularly" useful in can'- junction" with Handling; hot bars" which" have" a non-circular cross section? As a bar 'comes'from a" rolling-mill or r other: shapin'aipomt; it is frequently desirable to turn. the same before: it 2 is carried" to. the next operation: In the" case's! rolling. slirmes;having: one axis. longer than the otheraxis, either. in its final form'or durin'gftlre rollir'rg' operatiomptheshapetcome from-onerouing mill" and. is" turned 90 before being; fed. to

therrext millbrpass;

AST'aIY examplerofone use"of""tlie"'invention; a mill is "indicated at In and" a" second" mill'" at' I I with the apparatus of the present inventionlindioa'teclgenerallyat 12.. The b'arl8lcoming"fi'om the. first mill is "slid; into tlie direetinygnldel 4 oi tli'e turning? device, said bar" being slid"along thetabletbp'. I51 Tl'ie'device I2iisithenrotated "90 as will be explained" hereafter so as to turn the metal. bar-"sot that it :will o'e'in' readinessrfor fl lrtherimovement into tl'i'e 'seeon'dfmillnrpassz' l I.

In" the" particular: form shown; the: guide" is arrangedrfor 'ailfiarl' Having a; diamond? or' similar slianes Thea-- ,l 82 may, beqreeeivedf't its longer "cross sectional axislforizontallyarrang'ed 'ceeds.

thereof through 90.

3 as seen in Figure 1, the guide I! having a flared aperture so as to properly feed the bar into the aperture [9 of the guide. If the bar is turned so that the shorter axis is horizontal, the guide may be placed in the position shown in Figure 3 before insertion of the bar therein. Guide holder [6 may have a pair of link means 28, 2| pivoted at 22, 23 to guide holder 16. In the form shown, the two links extend downwardly, said links being pivoted at diametrically opposite points to the guide holder. One end of the oscillatable link 25A is pivoted at 25 to a fixed pivot point or support 26 and the other end at 24 to guide holder [6, the fixed pivot point being below the guide. Pivot point 24 preferably is located about midway between

pivot points

22 and 23. The lower ends of links 20 and 2! are pivoted at 2'5, 28 to a cross link 29, said cross link 29 being pivoted at 30 to the floating sleeve or guide 3!. Sleeve 3! can have an aperture Bl therein engageable with the fixed upright pin 33. t is evident that the floating movement of the lower end of links 2i) and El can be guided in manners other than that specifically illustrated and that the floating sleeve can be arranged in other mechanical manners.

An operating link M is pivotally connected at 35 and 35 to links 2%] and 2! and a link 3'6 is connected at one end to arm 2% of operating link 34. The other end of arm 3% can be connected to a piston rod 39, hydraulic cylinder re being employed to cause oscillation of the link The links, cross link, and operating link are seen to be joined so as to form a parallelogram wherein the downwardly extending links remain substantially parallel as do also the cross operating links.

When it is desired to turn a bar which has been moved into guide aperture l9, hydraulic cylinder 49 may be energized so as to cause rotation of link 34 in a counterclockwise direction from the point illustrated in Figure 1. As link 34 is oscillated, link 29 will be rai ed and link 2| will be moved downwardly causing rotation of ring l6. Because of the location of lever arm 25A, guide holder 56 and guide i! will be raised as turning proceeds, upward movement of the link system being made possible by the slidable sleeve 3|. As the guide holder reaches the half way or 45 position of Figure 2, the guide it will have reached its maximum raised position because of the action of lever arm 25A moving the floating system upwardly as the turning pro- When in the maximum raised position, a bar located in aperture l9 will be lifted clear of the table. Continuing further rotation of guide holder l6 will lower the guide and bar so that the bar will again rest on the table surface. as seen in Figure 3 upon completion of the turning The

pivot points

30 and 4| of

cross links

29 and 34 respectively are connected to the floating slidable sleeve 3! so that the system can move as the bar is turned and raised.

The aperture E9 of the guide is so shaped and dimensioned relative to the bar to be turned as r isd r bed s ar-tee realis sp r 9 1 4 invention except as defined in the appended claims.

What is claimed is:

1. In a material turning device, a guide means, turning link pivotally mounted on opposite sides of said guide means, said links being joined by a cross link at a point remote from their connection with the guide means to form a parallelogram, means reciprocating said links, an oscillatable lever pivotally connected at one end to said guide means between the pivot points of said turning links, said lever being pivoted at the other end to a relatively stationary point between said links and being normally angularly disposed relative to the plane passing through the center of the guide means and the pivot of said lever at said relatively stationary point so that when said links move in opposite directions to turn said guide means, said lever will be oscillated and move said guide means and links upwardly as the lever passes through said plane passing through the center of the guide means and the pivot of said lever at said relatively stationary point, so that an article held in said guide means will be turned and raised as the turning progresses, the guide means returning to approximately the same vertical position at the end of the material turning operation.

2. In a material turning device adapted to rotate elongated bars, the combination comprising a guide means having an aperture therein for receiving a bar, a pair of substantially parallel links connected pivotally to said guide means on opposite sides thereof at a guide means pivot, a cross link pivotally connected to said parallel links, the distance from the cross link pivot to the guide means pivot for each of said parallel links being substantially equal, an operating cross link pivotally mounted at each end to said parallel links, said cross links and parallellinks forming parallelograms, and a lever pivotally connected to said guide between said guide means pivots and said parallel links and connected to a relatively stationary support raising and lowering said guide as it is turned.

3. In a material turning device adapted to rotate elongated bars, the combination comprising a guide means having an aperture therein for receiving a bar, a pair of substantially parallel links connected pivotally to said guide means on opposite sides thereof at guide means pivots, a cross link pivotally connected to said parallel links, the distance from the cross link pivot to the guide means pivot for each of said parallel links being substantially equal, an operating cross link pivotally mounted at each end to said parallel links, said cross links and parallel links forming parallelograms, a lever pivotally connected to said guide and to a relatively stationary support between said parallel links raising and lowering said guide as it is turned said guide returning to approximately the same vertical position each time, sleeve means slidan article receiving aperture therein, a pair of spaced link means pivotally connected to opposite sides of said guide, said link means being movable relative to each other in opposite directions to rotate said guide through a predetermined angle, means reciprocating said'lin'ks, and oscillatable lever means having one end pivotally mounted in a fixed vertical location and the other end pivotally connected with said guide between the pivoted connections of the link means thereto, said lever means raising said guide upwardly from a normal position during turning and returning it to approximately its initial vertical position upon completion of the material turning as the guide is turned by reciprocation of saidfirst mentioned link means.

FRANK J. WOOD.

References Cited in the file 01 this patent UNITED STATES PATENTS Number Name Date Treat May '7, 1889 Simpson Jan. 15, 1895 Ekstrand Feb. 7, 1922 Shearman June 17, 1924 Dowling Oct. 18, 1932 Tiedemann Nov. 3, 1942