US2744780A - Clamping device - Google Patents

Clamping device Download PDF

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US2744780A
US2744780A US260241A US26024151A US2744780A US 2744780 A US2744780 A US 2744780A US 260241 A US260241 A US 260241A US 26024151 A US26024151 A US 26024151A US 2744780 A US2744780 A US 2744780A
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coil
jaws
support
clamping
jaw
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US260241A
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Paul H Dixon
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DIXON RES Inc
DIXON RESEARCH Inc
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DIXON RES Inc
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/24Single members engaging the loads from one side only

Description

P. H. DIXON May s, w56
CLAMPING DEVICE 2 Sheets-Sheet l Filed Dec. 6, 1951 P. H. DIXON CLAMPING DEVICE May 8, 1956 2 Sheets-Sheet 2 zz L44 z2 NYSIOTC: paul QJ. D L'. Kork CAM' i (L, .-Ll Cwvomosy/ Filed Dec. 6, 1951 United Statesy Patent 2,744,780 CLAMPING nnvicu Paul H. Dixon, Rockford, Ill., assigner to Dixon Research, Inc., Rockford, Ill., a corporation of lliinois Application December 6, 1951, Serial No. 260,241
13 Claims. (Cl. 294-415) This invention relates to a device for facilitating the picking up and transportation of heavy and unwieldy articlessuch for example as coils of strip material of widely variable dimensions. t
One object is to provide anew and improved clamping deviceor grab which may be applied manually to the article to be handled while the latter is in one position and then actuated to grip the article along two dimensions so that the article may be tipped angularly into another position in which it is held securely while being transported.v
- Another object is to provide a device of the above character which grips the article along two dimensions by two clamps which open and close in perpendicular directions and which operate differentially according to the two dimensions of the article to be handled.
A more detailed object is to provide a simple construction of the two perpendicularly acting clamps by mount'- ing oney jaw of each clamp in right angular relation on one member and the other jaws in a similar relation on a second member, which members are mounted on a common support to slide along perpendicular paths.
Another object is to actuate the two clamps differentially by applying tension to a ilexible line operatively connected to the sliding members. j
rIheinvention also resides in the novel construction of the support to increase the rigidity of the jaws and in the construction and arrangement of the clamps to facilitate the placing of the device in clamping position aroundA the article tobe lifted.
Other objects and advantages` of the invention will become apparent from `the following detailed description taken in connection with the accompanying drawings, in which t, v Figures- -l and 2 are4 perspective views of the improved clamping' device and an article with the latter disposed in different positions. f l y.
' Figay 3 .is a side elevation of the clamping device. y
Fg.r4 is, an end elevation. f
' Figs. 5, 6, and 7 are sectional views taken respectively alongthe lines 55f66, and 7 7 in Fig. 4.` v FigS is a sectional view taken along the liners- 8 in Fis.
.While the improved clamping device lmaybe-used to handle various articles having av generally rectangularl cross.section,*it is especially useful in handling coils of metal strip material and is therefore described herein in connectio'owith such a usage. It will be ,under-stood, however,-that such disclosure is merely'for `the-purpose of illustrating the invention and is not intended'to limit thescope of the appended claims. i
/As shown in Fig. 1, coils 10 of strip material are usually stored 'bystacking horizontally oneon top of the' other.
mermberl) whose edge carries the inner jaw 13 of the 2,744,780 Patented May 8,1956
outer edges of the metal strip are frequently bent and damaged during handling of the coil.
In accordance with the presentinvention, these difl culties are overcome through the provision of two clamps respectively operable .to grip Athe top coil of the stack both radiallyand axially and movably mounted on a common support 12 which is adapted to be picked up by the crane hook 11 rst to tilt the coil through a quarter revolution,
andv then toy suspend itin the vertical position shown in Fig; 2., i
`Generally stated, the vaxial clamp comprises opposed innerv and outerjaws l13 and'14 movable toward each` other to grip the opposite end surfaces of the coil while the radial clamp comprises jaws 15 and 16 movable toward each. other in a perpendicular direction to engage the innerand outer peripheries of the coil. Opening and. closing` of the two clamps is effected by moving the outer t jaws, 14Jand 16l which cooperate to define an outwardly. openingy recess 17 (Fig. 6) Hfor receiving theradial sec-k tion of the coil 10 so that the outer jaw 14 may be inserted under the coil with the opposing jaw 13 lying on top of the coil, the jaws 14 and. 16 of the y,other clamp facing the inner and outer peripheries of the coil section. The jaws, of each-*clamp then maybe drawn together to grip the coil both axially andvradially. ffPreferabl'y,` the jaws ofthe two clamps are supported on two elongated members 18 and 19 which cross each other andareimounted `onthe support 12 for endwise .sliding movement in ,perpendicular directions, one jaw ofeach clamp being formedas a part of each member.
Accordingly, the outer jaw114of the axial clamp is supported on andprojects laterally from the member or slide 18 r whose sideedge forms vthe inner jaw 15 of the radial clamp. Similarly, the outer jawl k16 ofthe radial clamp isrigid with and projects laterally from the end of the slide other clamp. l
rvThe slide 18 comprises two parallel flat bars 22y which are spaced apart, for a purpose to appear later, by a block,
23 inserted between them at the end of the slide adjacent l vthe outer jaw 14 and are fastened together by suitable. bolts 24 extending through the bars and theblock. At
the `inside of the slide 18 thetblockr 23 extendsbeyond the edges .of the bars V2,2 to ff0rm the clamping surface of the'jaw15 and, if desired, this surface may be. increased in area bywidening the extended portion of the block as at 23?l (Eig.x4). The jaw 14 is integral with the block 23 and is made inthe shape of a thin wedge which is inclined gradually to a sharp edgeuatthe end, the inner side ofv the wedge being disposed. nearly at right angles to the jaw 15 to form-the clamping surface .of the outer jaw 14.
With this construction, the outer jaw 14 may be insertedy easily under the top coil and into the Inarrow space byy y the-member 19 to: slide. between the bars 25. The bars In movinggthe top coil by a crane, the usual procedure f" is to-.tip the coil upwardly and apply the hook 11 of the crane to the inner edge of the coil so that the latter will bey suspended vertically from the hook while being transf ported tok a point of use. Such tilting ofthe coiljs'a laborious and time consuming operation, and theinner or 25- are held apartby spacers2'6 (Fig. 6) inserted between the :bars atthe ends adjacent the jaw 1.6. Between` each bar` ZSfandzthe lcorrespondingrends of the spacers 26 is a'small plate 27 with a lateraly projection 21, the projec tions on the two'y plates Iforming the -outer jaw 16.` yThe bars 25', the plates 2,7, and the spacers 26 may be suitably fastened together asby bolts28. .Since the edges of the' projections 21 are at right angles to the edges of the bars 25,- thel jaws l3fandf16 on the slide 19facerespectively l ,Y thejaws 14 and v15 on the slide 18.
With this arrangement, sliding the member 18"bacl 3 and-forth,opens-andfclosesl theclamp jaws 13 and 14, and the.jaws. 15. and16. of the.Y other, clamp., are. moved. to; ward and away from each other by sliding the member 19. Since the member 18 slides-within the member 19, the opposing jaws of` each. clamp arey inzsubstantially the same plane. To preventy the slidable-membersfrom being removedaccidentallyffrom the support/12; their. endwise-movement` in. the clamp` opening. direction-.is limited.
by stops129-fwhichproject fromthe sides-ofl the bars 22 andh near they ends remote from the jaws 1'4:..and"16.
andfare=adapted to:abut against the support when the clampsare fullyA Open.` as shown` in Eig. 5.
Tu'guide.I the members 18fandf19in theirendwise sliding and to hold the latter against lateral and sidewise shifting, the support 12 is formed with a pair of iper-pendiculas guidewaysfin which the members slide. The guide- WayJ forthe sliding member; 118 comprises a pair of inner opposed@ channels (Figs. 6 and 8) and, similarly, opposed channels-31 (Figs. 4 and 5) spaced outwardly from andiatright angles to the-inner channels define the guid'eway forthe` sliding member 19. Foi-the purpose ofg forming the channels 3|)y and 31, the-support includes two parallelrectangular plates 32 spaced apart and disposed diagonally across the slides 18 and 19 where the latter-cross,- theend portions of the diagonal plates overhangi'ngvthe slides behind the jaws 13 and 15. Between the en dI portions and behind the jaw- 13 are inserted a spacer 33 andy aspacer block 34 (Fig. 7) fastened in place by suitable rivets 35 to hold. the diagonal'plates 32 in spacedI relation. Lyingv against the inner side of each diagonal plate 32 and suitably riveted thereto are two guide-bars 36y and 37 of generally the same thickness as thebars- 25'y and having opposed parallel edges spaced apart a distance equal to the width of the bars 25. Similarly, two guide plates 38 and 39 lie against and are riveted to the inside of the guide bars 36 and 37y and have opposed parallel edges perpendicular to the guiding edges Cil similarly spanning the bars 25' near the jaw 16. A third stud. 46` is secured, to. the suppprt 12-21.114, Spanstthe guide. plates 39. The chain 41 extends from the block 34 outwardly along the slide 19 between the bars 25, around the outer side of the stud 45, back along the slide 19, around the stud 46, outwardly along the slide 18 between the bars 22, around the outer side of the stud 44 and outwardly of the clamping device. The stud 46 confines the chain 4tiwithin the slideslS and 19 where it does not interfere with the clamping of the coil 10 and guides the chain so that. it approaches the, stud- 4.4:.in. a..
12 and resulting in endwise sliding ofthe-members 1.85: and 19 to move the outer jaws inwardly relative to-theA support 12. Since one of the rollers 44 and'45f may move while the other remains stationary, the rollers. serveto connect the chain differentially to the outer jaws 14 and 16 and, therefore, although one clamp may closey rst, the intermediate portion of the chain continuesto shorten to collapse the other clamp. After both ofthe clamps have been closed, continued pulling of the chain end=43 exerts a lifting force adjacent the outer periphery of the coil raising one side of the coil'and` tiltingthe latter through a right angle until the coil hangs vertically, as shown in Fig. 7, in which position the free end 43015 `the chain extends upwardly approximately over the center of gravity ofthe coil. When the coil is hanging vertically, substantially the entire weight of the coil is supported by the jaw 1 6 and thus the line 40 is tensioned to` hold the clamps closed. Relieving the tension in the4 line by ofthe barsT 36 and 37. Thus, the inner sides of the i diagonal: plates 32 and the parallel edges of the guide bars 36 andv 37 dene the outer channels 31 and, in they same manner, the inner surfaces of the guide bars and the'edgesof the guide plates 38 and 39 define the inner channels 30.
The guide bars 36 and the guide plates 38 are disposed behind andl extend outwardlyalongthe slides 19 and 18 to provide abacking for the jaws 13 and 15 while the guide'bars 37 and the guide plates 39 support the slides; adjacent these jaws. With this construction, the slidesare held rigidly against lateral movement so that the clampsmay grip the coil 10 securely.
Means isprovided to close the clamps differentially according to the two dimensions of the coil 10. Preferably this 'means is operable as an incidentto the lifting of the article by the crane hook 11 whereby the clamp 15, 1,6 is collapsed about aradial section of-the coil and the clamp 13,14 is closed against the ends of the coil during initial upward movement of the hook 11. In the preferred embodiment, this diiferential means is connected to the clamps in such a manner that the continued upward movement of the crane hook after the coil is clamped is eective first to tilt the coil to the vertical position shown in'Fig. 2 and `then to lift the coil. While this means may take various forms, herein it comprises a iiexible line 40 which is anchored at one end 41 to the support 12 and extends outwardly ofthe support where an eye 42 on the free end 43 of the line may be hooked to the crane, the intermediate portion of the line being connected to the movable jaws of the clamps to close the-latter about the coil in response to outward pulling of the line.v
As shown in the drawings, the flexible line 40 comprises afchain the end 41 of which is secured to the spacer block 34. The lchain is connected to the jaws 14 and 16 through studs 44 and 45 rigid with and'projecting laterally from the slides 18` and 19 respectively, the studv 44 spanning the bars 22 adjacent the outer jaw 14 and 4the stud 45` transferring the weight of the coil to another support device from the coil.
In operation, the clamping device is expanded to a size larger than the axial and radial dimensions of the coil 10 so that the latter may be received within the recess 17 between the twoouter clamp jaws. The tip of the wedge-shaped jaw 1 4 then is inserted intov the narrow space under the coil as shown in Figs.y 1 andv 3 with the slide 19 resting on top of the coil andthe jaw 16 projecting loosely into the central opening ofthe coil. The' hook 11 of the crane is lowered and inserted through the eye 42 and the free end 43 of the chain 40 is lifted vertically. Since the chain is doubled around each of the rollers 44 and 45 through substantially 180 degrees, further pulling or lifting of the free endofthe chain results in endwise sliding of the members 18 and 19 on the support 12 wedging the jaw 14 under the coil and closing both clamps 13, 14 and 15, 16 against the coil. Once the coil is clamped, the continued lifting action of the crane tilts the coil from the horizontal position shown in Fig. 1 to the'vertical position illustrated in Fig. 2. During thisy tilting, the coil is held securely inthe recess 17 by the jaws 13 and 14. When the vertical position is reached, further lifting of the free chain end'43 raises the coil which then-is ready for transporting or otherhandling.
It will be apparent that a clamping device of the above character grips the coil 10 alongtwo dimensions so that the coil is clamped securely when it is picked up, as `it isy jaw 14 facilitate placing the,A device around the coil and the clamps 13, 14 and 15, 16 are adjusted easily to 'the- ,Y sizeof the coil by sliding the members 18 and 19.; By utilizing the tension in the lifting chain 40 to move the slides: 18 and 19, the jaws clamp the coil automatically when the crane hook 11 is raised and release the coil when the latter is laid down. I claim as my invention:
l. A device `for clamping a" coil comprising, in comthel outer periphery thereof, a second elongated member perpendicular to said first member and slidably mounted on said support for endwise movement, said second mem,- ber having a longitudinal clamping surface adapted to engage one end of the coil along a. radius thereof,a thin jaw` projecting laterally from' said rst member and having a face on one side opposing the clamping surface on said second member, said one side and the opposite side of said jaw being inclined relative'to each other to form asharpened end adapted to be wedged under said coil, a second jaw projecting laterally from said second member to be inserted in the central opening of said coil and having a face opposing the clamping surface on said rst member, a pair of studs, onerigid with and projecting laterally from each of said members adjacent said jaws, and a exible line having one end anchored to said support and bent around said studs thereby to slide said members and to urge said jaws toward said opposing clamping surfaces when the other end of said line is pulled tolift the coil.
2. A device of the character described comprising-in combination, a support including a first set of guide elements having opposed edges to, define a iirst guideway. anda second set of guide elements having opposed edgesv f to y'define a second guideway perpendicular to the first, a irst elongated member mounted on said' support for endwise sliding in said first guideway, a second elongated member slidably mounted ins'aid second guideway for endwise movement, said members having clamping surfaces along crossing edges thereof to provide two jaws, the guideelements of each set'respectively supporting the associated member adjacent said jaws and extending along theopposite edges of said members to provide a backing for;v saidl j aws, a klateral projection onnsaid rst member and ,having a clamping faceopposing the jaw on said second member, a lateral projection on said second member and having a clamping face'opposing the jaw on said first member, and mechanism connected to said members and said support and operable to slide said members endwise movement, said members having clamping surfaces along crossing edges thereof to provide two jaws, said guide elements supporting said members adjacent said jaws, a lateral projection on said first member and having a clamping face opposing the jaw on said second member, a lateral projection on said second member and having a clamping face opposing the jaw on said first member, and mechanism connected to each of said members and operable to slide said members thereby to move said faces toward and away from said jaws.
4. A device of the character described comprising, in combination, a support, a first elongated member mounted on said support for endwise sliding and having a clamping surface along one side edge thereof, a second elongated member perpendicular to said rst member and slidably mounted on said support for endwise movement, said second member having a clamping surface along one of itsside edges, two jaws, 'orierprojfctng laterally from the outer ends of each of said members land having a face opposing ythe clampingjsrface on the other of said members, a efirst stud rigidlyf fmounted on said tirst memberoutwardly of said support'and projecting laterally from the member, a` second stud s'imilarlyvmounted on said second member, a thirdfstud rigidY with and projecting laterally from said support, and a `flexible line anchored atone end tosaid support and extending loutwardly along said rst member, around the outer side of said tirst stud, reversely along said'irst member, around said third stud, outwardlyalong saidsec'on'dfmember, around the outerside. of said second stu'd and outwardly of said device thereby to' slide saidnmembers differentially and to clamp an article along two of' its .dimensions in response to outward pulling of saidlin. t.
v' Aclamping device of "the character described cornprising,y `in combination, a support, an inner ,jaw and an outer'jaw opposing each other and mounted on said support for relative movement' toward and away from each other to open and 'close thereby to clamp an article along one vof its dimensions, a second pair of opposed jaws similarly mounted on saidsupportv to open and close in a direction 'perpendicularto the movement of said irstlmentioned jaws and to clamp said article along another 'dimension, a first stud rigidly connected to the outer jaw of said rst pair, a second stud rigidly connected to 'theouter jaw of saidsecond pair, a third stud `lrigid with-saidnsupport, and a 'exble line anchored at 'onetend'to said' support and wound around the outer side ofls'aid first stud', ,back around said'third stud, aroundv the 'outer'side of `said second stud and extending outward-v ly of said device'thereby to close vsaid pairs of jaws differentially according to the'ltwo dimensions of the article in lresponse tok outward pulling of saidline.
6. Adevice of the character described comprising, in combination, a support,vv a first. elongated member mounted on said support for endwise sliding and having a xclamping surface along one sideedge thereof, a second elongated member perpendicular to said first member and l each of said membersl and having a face opposing the clamping surface on the otherl of said members, a pair of guide "rollers,o'ne 'mounted' on and projecting laterally from each of said* members, andI a flexible line having one end anchored to said support and bent around each of said rollers thereby to slide said members and to urge said jaws toward said opposing clamping surfaces when the other end of said line is pulled.l
7. A clamping device of the character described com prising, in combination, a support, au inner jaw and an outer jaw opposing each other and mounted on said support for relative movement toward and away from each other to open and close thereby to clamp an article along one of -its dimensions, a second pair of opposed jaws similarly mounted on said support to open and close in a direction angularly related to the movement of said rst mentioned jaws and to clamp said article along another dimension, said outer jaws cooperating to define a recess to receive the article, a pair of studs, one for each of said pairs, rigidly connected to' said outer jaws, and
a exible line having one `end anchored to said support and wound around said studs thereby to close said jaws to the size of said articley when the other end of said line is pulled.
8. A clamping device of the vcharacter described comprising, in combination, a support, a first clamp comprising a pair of opposed jaws mounted on said support for relative movement toward and away from each other to open and close thereby to. grip an article along one of itsr dimensions, a second and similar clamp mounted on said support to open and close in a direction perpendicular to said firstv clamp and to grip said article along another dimensien, efilexible,iiiieextendins .outwardly fram,-
Seidlsupnerf endime e.. relative thereto, and. meehe Diem eoaneeiiiiaeaid meerid ihamevebieews f: Seialv clamps and operable inresponse, to'outward pulling of the line to close saidclarnps-di1erentially accordinggto theI iWO. dimeneiens Qftheertiele 9. Alclampingdevice: of thezvcharracter described corn- Piieiiiain eembinetiem agsuppert, an inner jaw. and, eil outerV jawopposng eachother and mguntedvon said sup: port for relative movement toward and awayy from` each otherl toopen andvcloselthereby toclampan articleI along Olie Qf iis. dimensione, aseeehd. pair Ofrepposed iewsr similarly mounted.onusaidsupport;to open andclose inv afdiieetiqn,ensularlyieleiedfta the mevement 0i. Said7 mounted onV said support for endwise sliding and` having aclarnpingsurface alongone sideedge thereof, a jaw projecting, laterally-from saiddrst member and having alclamping face per'p endicul'arl to said surface, a second` elongated mernber perpendicular toy said first member. andfslidably mountedionsaid supportfor endwise rnove7 ment, saidsecon d`memberhaying aclamping surfacel ex,- tending alongV one of its side edges and opposing the face of saidjaw, a thin jaw? projecting laterally from said secondmember and havinga clamping face on one side opposing the clampingsurface o'llvsailrst membensaid one side and theoppositeI siderof` said thin jawbeing inclined relative to eachother to,fo1fm a sharpened; end adapte-,dto be wedged under the article to` be, clamped, andfmeans to engage` saidt members to' slide the same thereby to clampv the article between said surfaces and said faces.
v11. A devicevof the character described comprising, incombination, a'supporrt defining a pair of perpendicularV guideways, arst elongatedhmember,mounted on said support forendwise slidingin one Iof saidy guideways and having a, clamping surface' along one I side edge thereof,
e,eeeeridfelsmgetedinember Slidebly. meuntedin the-ether, 0fl Said .syideweye for endwise movement endhavinste, clamping`- surface along one of4 itsisidey edges, twojayvs, one projecting;laterallyfrom each ofl saidV members and, having a face opposingthe clamping, surfaceonftheother.. of said members, and means connectedto,saidmernbers andmoperable ,toy slidelsaid memberstherelnyv to Vclamp an ariieiebetween Said Surfaces and Seid faces.
12. Aldrevice ofthe character4 described comprising, ,in combination, a, support,A a first elongated member, mounted on said,l support forA endwise slidingandrhaving; aclamping, surface alongone sidev edge thereof, asecond', elongated member. perpendicularV to Asaid Irstrnember and slidably rnou'nted` on. Vsaid supportfor endwise move.- ment, ksaid second member havingl a clamping, surfacey along one of its ;side,.edges, tw :|,jaws,rone projecting laterally from each,of `said membersandhayinga face opposing vthe clampingsurface on thel other Aof said ,meme-x, bereendmeerie eonneleted to, Said;memberefandroperable: to slide said membersthereby to clamp ,an ,articlebetween saidA surfaces and ,said faces.-l
13- A` demping devieeofthefeharaeier d eeeribedcom#l prising,` in combination, a, suppor an inner jaw, and. en.y Outery jewy ennesima .eeen other edmeuniedi 011` Seid.k support; for` relative movement: toward, and awayy fromz each;y other` to ope/mand. close: thereby; to, clamp anlarticle; alertsJ 011e- 0fA its dimensione a. Seeensih pair, Off Genese@- iawsleimilarly maimedimeadeuppert teOpenen@elenal inse-f .direeiien ausiliaria reletedite: the; Incrementofnierst mentioned jaws and to clamp said article-alngjan;` Otheridirneneien, ,Sai Aruiten-ielweiteirnrrepaeedf apart. and eeeneraiiins 'te de eeiese i11;;whieh thei artielemaxbefreeeived bymevineli ewiSe-i1 1-;th .atie efrsaid, jewel. end rneeiieaism eeiineetediosai Jawsianrl, Operable to; eieeef-Y Seid; peirefef; jaws-1 thereby; adiusiinef Said f Clamping; device-tothe size Iof saidgarticle.
Referenees-Ciieiinihe ilefeflthiepetent UNrrEn-sm'rns nATrsrrrs-` 256.421307- Qlspn. June 1.6, ,1953, EOREIGN; PfATENTS V 470,572 Germany A Jan.v 2 1-, 1,929
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2871052A (en) * 1955-08-25 1959-01-27 Herbert J Neher Apparatus for lifting stacks of bricks and the like
US2925300A (en) * 1956-07-09 1960-02-16 Ralph R Kelley Material handling device
US4489970A (en) * 1983-06-06 1984-12-25 Dean Research Corporation Apparatus for lifting heavy metal plate materials
US4492402A (en) * 1983-03-28 1985-01-08 Bradley Lifting, Corp. Coil up-ending grab
US20030025347A1 (en) * 2001-08-06 2003-02-06 Shwaykowski Ernie J. Wheel lifting device
US20060163891A1 (en) * 2005-01-21 2006-07-27 Rjs Corporation Spool handling device
US20140306390A1 (en) * 2013-04-12 2014-10-16 Bridgestone Americas Tire Operations, Llc Tire rotation device
CN104609293A (en) * 2015-01-20 2015-05-13 宁波菲仕电机技术有限公司 Stator hoisting tooling

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE470572C (en) * 1929-01-21 Max Nopper Vice with foot operation
GB470130A (en) * 1936-05-22 1937-08-10 William Sidney Russell Improvements relating to work grippers for machine tools
DE679790C (en) * 1937-04-22 1939-08-12 Schwaebische Huettenwerke Gmbh Gripping device
US2642307A (en) * 1949-01-26 1953-06-16 American Brake Shoe Co Grab

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE470572C (en) * 1929-01-21 Max Nopper Vice with foot operation
GB470130A (en) * 1936-05-22 1937-08-10 William Sidney Russell Improvements relating to work grippers for machine tools
DE679790C (en) * 1937-04-22 1939-08-12 Schwaebische Huettenwerke Gmbh Gripping device
US2642307A (en) * 1949-01-26 1953-06-16 American Brake Shoe Co Grab

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2871052A (en) * 1955-08-25 1959-01-27 Herbert J Neher Apparatus for lifting stacks of bricks and the like
US2925300A (en) * 1956-07-09 1960-02-16 Ralph R Kelley Material handling device
US4492402A (en) * 1983-03-28 1985-01-08 Bradley Lifting, Corp. Coil up-ending grab
US4489970A (en) * 1983-06-06 1984-12-25 Dean Research Corporation Apparatus for lifting heavy metal plate materials
US20030025347A1 (en) * 2001-08-06 2003-02-06 Shwaykowski Ernie J. Wheel lifting device
US20060163891A1 (en) * 2005-01-21 2006-07-27 Rjs Corporation Spool handling device
US7222902B2 (en) 2005-01-21 2007-05-29 Rjs Corporation Spool handling device
US20140306390A1 (en) * 2013-04-12 2014-10-16 Bridgestone Americas Tire Operations, Llc Tire rotation device
US9186939B2 (en) * 2013-04-12 2015-11-17 Bridgestone Americas Tire Operations, Llc Tire rotation device
CN104609293A (en) * 2015-01-20 2015-05-13 宁波菲仕电机技术有限公司 Stator hoisting tooling

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