US2457538A - Crimping tool - Google Patents

Description

H. P. DUPRE CRIMPING TOOL Dec. 28, 194s.

. Filed NOV. 11, 1944 YQ l n INVENTQR Peferuare AlTORNEY @uw i il." f/ezzry BY A@ Patented Dec. 28, 1948 'ATENT OFFICE CRIMPING TOOL Application'fNoMemberll, 1944, Serial No. 563,029

4`1C1a'ms.. (Cl. 153-1)- My invention `relates to,a:.vcrimp ing.. toolb for attaching an. .endftting to. a.y cable or hose...

The. primary` object. of .my invention. is toprovide atoolfor. compressingthe shroudrof a. connectorover. the insulation of anelectrioc'able to form aiwaterftight .joint .capable of :withstanding the high pressuresI encounteredin marine. installations.

.Other objects are toptovde a toolof the ioregoinglcharacter -capable of handling a-wide variety of. connector diameters ;.t0. provide` a crimping tool that (will not. extrudetha cable-end during, theY crimping operation; that providesA a pluralityY of semi-circumferential indentations of relatively narrow-widthilabout the connector; to.proVide in combination with .the crimping. element,V means for indenting; the: main-.body oifthe connector. to the metal ofthecable;v and to provide broadly, a type. of. semi-cylindrical .indentation'on theop-A posite sides of a cylindrically shaped body thatu is.oiset,-one from thesother.

laccomplish thesetandlotherlobjects and ob.-v tain my new-resultsas Willbe apparentfrom the. device described-.in the following. specification,` particularly ypointechoutin the-claims,- and illus-1l tratedrin the.` accompanying. drawing in..which:

Fig. 1 isa-rear view ofmy crimping tool-.with only a portion. of fthehand-levers'shownr.

' Fig; 3 is a frontwiew ofthe.tool -with .the front platen ypartially f removed.4 toi show. the. inner,- ary rangement of .f parts;

Eig, 5 is; aifragmental View, ot. a: sliding V- plate aperture proyidect-:wittrqan: indentingf;tooth.v

Fig. Gris a. perspectiveview'of acaioleeen-dl sleeve` tween;` plates z Illeia'ndf. I is=moved long'rtudinallyl ozithexedfplates.. Aeserieso algxedi'apertures I3,l I 4;: and'. I 5;' irrthesthreeffplates supports the 4 connector "I 6 .torbe crimpedcltherein; Thecrimping/.action is: caused :by a;movement `othemovabler plate I which. restrictsrthe. eiectivev aperf tureopenings;v as fpl'ate I22'is shifted with*respect 5 ..The'=plate` I2ris connectedftara: levenarmf. II'I `by a link action as is shown in Fig. 3. .Airpairfof.V

leven plates leandc l'arezsecured to lever arm I'I by rivets 20 and dowel pins 2I. A fulcrum pin 22 pivotallysupports'ithelverrplate'sfrl and I9 Fig; 4h isf a; perspectivelfviewlof the rir'xdentingv 3 2 to, lowervcoyerplates: 23. and124, Link;.pins. 25 and. 26 permit` the link 21ste; :transfer thecm'ovement. oft thef lever arm I I totthe braces: 28f'and 29', which :in turn are secured' tofthe sliding plate plates 3.;I'v and.' 32,-.` locklthe-.faforesaid elementsiin' position; Spacers'.t 34i`arrdr135: of slightly greater:

thickness than AslidingplateA I2, are'positioned be-V tween; plates: In .l and.v` I I, along 'the longitudinal edges to provide;isuflicientfspace; for` a freelmovement ofi-theislidin'g plate IZJduringLthe: operation of thetool.

The f cover plates-L 23:anda24'zare..secured. to: each" other, through spacers 34 and 35, by cap screws;

25' The=assemblywiscompleted' by the leverl army 3l which-is made integral with theI outer plates The series of apertures, I3, I4 and I5, in plates Ill;f I2fandl-'fl Frespectively` are substantially eggshapelimchfarazter with widest portion' 39 of the aperture I4!` in' thevslidingplate I2; opposit'ely posi-tionedf'with" respe'ct'- totheE widest portions'- 401 andy II ofplates IUiand" II respectively.

A In the ='noncrimping position of` the plates, the enlarged "orwidestfportionsfSB; 4I)r and 4I are alignedl toeach otherffto provide the maximum When the lever=`l-1` opening for the connector. is movedto'the positionshown,` theVl narrowest portions` of'thef apertures `'indicated by the arrows designated as 42f-are carmned into position about:

the shroudf-of "connectorIG' and reduce it to the desired shape. the `connector body af'sub'stantially circumferen .y tialcompression-whichhasfbeen found, produces asealv of connector and insulation* sufcient to withstand the-'high pressuresV` encountered in marine installations Groupsiofapertures ofvarious sizes, provide V suitable compression means for the variousy sizes of-'connectors used;

The4 outer4 plates "I 0- *and* I I, maybe made 'thinner than the central sliding plate I2. face 44 of the connector I6 is positioned again-st The ovall shaped apertures-give 3 6, are formed when the lever Il' is manipulated t the position shown in Fig. l. Plate Ill and Il causes the semi-cylindrical grooves 45 and 46, and sliding plate l2 causes the wider groove 47. The thin groove positioned near the edge 48 of the connector i6, causes the insulation 49 to be forced towards the inside of the connector, and adds to the effectiveness of the` seal. To prevent longitudinal bending of the connector body, th-e two outer plates should be spaced as Aclose as possibleA to the intermediate plate,

Where a single indentation of the pointed typ is desired, the smallest diameter of the aperture taining a plurality of cut-out sections arranged 1 non-transversely to the direction of motion, each f one-of the cut-out sections in the intermediate in the sliding plate may be provided with a tooth 50, as shown in Fig. 5. The indentation of this type may be used to indent a connector body l5, to an electric cable. l l

This general type of indentation may also ybe l made by utilizing a portion of the deviceor that purpose as shown in Fig. 3. Here a die 53 having a suitable indenting tip `515, is provided with a slot 55, into which is insertedthe edge 56 of sliding plate l2. Cap screws 51 lock the die 53 to the plate I2. lA groove 58 is provided in the'end 59 of the lever arm 31, for receiving the 'connector to be indented. When the sliding plate I2 carrying the die 53, is moved by reason of the operation of lever arm Il, any connector of suitable size, positioned ingroove 58 will be indented` thereby.=

The resulting indentations are characterized by a pair of semi-cylindrically shaped grooves spaced apart a distance substantially equal to the width of the oiTset groove positioned on the reverse side of the connector body.` The crimping operation may be repeated by rotating the connector body 180 in the plate apertures resulting in a triple ring of circumferential grooving which adds to the eectiveness of the seal.

The stationary plates may be increased with the intermediate plates positioned in between, to form a series of grooves on both sides `of the connector.

The invention is applicable to all types of sleeve installation. 'Ihe elongated holes43, 53a, 43D, permit the connector'stem I6a to be longitudinally moved therein,`as the crimping action'takes place.

For purposes of definition, by the use of the phrase complementary working surfaces is meant that portion of the intermediate plate and those portions of the adacent plates which engage the article to bring about the forming operation. Similarly, by the Words working position lis meant the position of the complementary working surfaces `at the moment the article is engaged by them.

I have thus described my invention, but I desire it understood that it is not confined tothe particular forms or uses shown and described, the same being merely illustrative, and that the invention may be carried out in other ways Without departing from the spirit of my invention, and, therefore, I claim broadlythe right to employ all equivalent instrumentalities coming within the scope lof the appended claims, and by means of which, objects of my inventionA are attained and new results accomplished, as it is obvious that the particular embodiments herein shown and described are only some of the many that can be employed to attain these objects and accomplis these results. i

I claim:

1. Atool for reforming the shapes of articles comprising a plurality of plates, at least one of plate 4being transversely aligned in position with respecty toa cut-out section in each of the adjacent plates in their original positions to permit the article to be inserted transversely therethrough, at least one of said cut-out sections in each transverse aligned sections provided with a working die surface for reforming the shape of the article when the intermediate and adjacent plates are movedwith respect to 'eacliother,4

2. A tool for reforming the shapes offarticles comprising a plurality of plates, at least one of said plates being intermediately positioned be# tween two co-acting plates all of said 'plates being spaced immediatelyadjacent'each other'to prevent bending the article axially; means'for mov-A ing the intermediate and the adjacent plates in' a predetermined linear direction with respect t0 each other during the reforming' of the shapes of the articles and alternately returning'the platesA to their original positionsjeach of-said 'platescom taining a hole, said three holes being arranged transversely to each other to permit the article to beinserted transversely through`v the lthree holes, at least one of said vholes provided with a working die surface for reformingl the shape of the article when the intermediate and adjacent plates are linearlyy moved with respect to each other. I r 'v 3. The tool of claim 2 wherein the" holes are oval-shaped, the ywidest portion of the trans-v versely positioned holes in eachfplatebeing nor-` mally aligned with respect to each otherand the narroWe'st portions of the holes being opposite each other when the intermediate and adjacent plates are moved with respect to each other.-

4. A tool for reforming theshapes of articles comprising a plurality of plates, at least one 'of said plates being intermediately positioned between two co-acting plates vall of said plates being spaced immediately adjacent each other to prevent bending the -article axially; Ameans forv moving the intermediate and the adjacent plates in a predetermined linearv direction with respectr to each other during Ithe reforming of the Ashapes of the articles, and alternately returning the plates' to their original positions, each vof said plates containing av cut-out section,vsaid cut-out sections being transversely alignedvin position with respect'to each other, to permit the article to be inserted transversely therethrough, at least yone of said cut-out sections provided with a work- (References on following page REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date Worthen et al. July 5, 1859 Ritchie June 5, 1883 Wick, Jr. May 28, 1895 Van Arsdale Sept. 29, 1896 Smith Mar. 6, 1900 Wkstrom Jan. 16, 1906 Cooley Mar. 8, 1910 Rogers Nov. 18, 1913 Possons Apr. 30, 1918 15 Number Number

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