US2460007A - Sheet gripping and pulling tool - Google Patents

Description

Jan. 25, 949. v. H. HAssELQuls'r 2,460,007

SHEET GRIPING, AND PULLING TOOL Filed @QL 19. 1944 V/////////}vf' f attachment and. detachment.

Patented Jmzs, 1949 u N l T Eo PATE Nr o Fr l c e PJLINGL TOOL vicios-H; nasslqmst, Akron,

Ohio, assigner to- 'ihe B.,F.1 Goodrich Qompany;,.Newf York, N. Y.,k acorporatiomofeNew Yorkl l I Application Cctober 19, 11944:,,Selhitlllth` 559,393

ZIICIzimS. (Cl. 817-43.)

pulling sheet material and is especially u'sefulin stretching ice-removingv and other coverings about thevr surfaces of aircraft.v

Objects of the invention are sure grip on the margin of a covering without injury to the covering.to. provide for a convenient handle on the covering' for manual stretching of the covering; to provide lever means for amplifying manual eiort, Vand to-providequick These and other objects' ill" appear from the following description and the accompanying drawings. i

Cf the drawings: Fig. l isa perspective view ofan'airplanezshowing lan ice-removing covering-"partially applied thereto and showing a tool constructed inaccordance with and, embodying the inventioninposif tion to stretch a portion of thercoverin'gf. Fig. 2 is a side elevation. ofthe'tool shown par"- tially in section and in gripping position, a part of the covering being also shown. i

Fig. 3 is a view to a larger scale of the operating nose of the tool shown in its released position, the

.view being in longitudinal vertical section. l

Fig. 4 isY a perspective View of a toggle member.

Fig. 5 is a perspective view o a modification ofv the invention in use in applying a covering.

Referring to the drawings, the tool `is formed with a tubular hollow L-shaped housing having a relatively long operating portion l and a relatively short handle or grip portion Il. The operating portion has an open end which is partially closed by a block I2 and is notched therebelow, as at f3, to receive the margin of the covering le. The notch I3 terminates in shoulders l3nt providing a locatingfsuriace forthe edge of the covering. The block l2 serves to provide ,av Y guide to the covering entering the notch and to this end has a curved surface l5 inclined'toward the notch.V Y

For providing. positive grip of the covering while at the same time avoiding injury thereto, the lower wall of the housing extends beyond the notch to provide a iixed jaw E5. A moveable jaw il of spring material is secured to the'housing as by vscrews I3 atV a position remote from the fixed jaw and normally stands away from the iixed jaw. For moving the moveablejaw t0- Vward the Xed jaw, a handle lever 2!) is pivotally secured to the housing as at 2! near the elbow 'of the housing and extends through Aa Vcleaianrlce opening 2?. therethrough along the handle portion il. A link23 is pivotally securedto'the lever, as

to provide for a.

j 3l. Where this is the case, the moveable jaw at 24 and^rl extends through the' hollow operating portion ofthe-housing. The link is formed with notches 25, 26in the upper and lower faces ornear its outer end for receiving a pair of toggle links 21, 21a in the form of and acting as moving struts. A notch 28 isformed.' in the housing to ruler-urn the linkll'` andanotch 29 is formed in the moveablejmv |113' to fulcrum the link 2S. The block i2.

acts-:as a stopy to limit movement of the link 23 in the outward'direction beyond'a dead center posi tion while the handle portion ll of the housing limitsmovement of the lever 2e and thereby the link 23 in Vthey opposite direction.' V"ll'iearrangeM ment: is such that when the lever 20 is pushed away fromr the handle portion, the links 2, 2in assumev the inclined position of Fig. 3k and the moveable-jaw H springsV away from the iixed jaw Y |161 to release the covering, and when the' lever 'et y ismoved toward the handle portion l i, the links 21', 21a,are moved substantially to a perpendicularposi'tion, as in Fig. 2, with the strong action ci moving struts, and move the moveable jaws l? toward the xed jaw with great force. Due to the high pressure developed by the toggle movement, the jaws may be smooth and of great area to avoid injury to the covering while nevertheless providing a strong grip on the covering.

The covering M- is usually provided with a thickened margin 36 reinforced by a bead core l? of the tool is formed with a rib 32 to engage ben yond the thickened margin 3l) and securely lock the covering to the tool. In the locking position, the toggle links 21, Ela are substantially at a dead center position so that the covering is securely retained even when the handle 2d is released.V

In use where a covering le is to be stretched about the surface of an airfoil to align apertures I'4a in the covering with apertured hollow internally threaded rivets secured to the airfoil, the tool is held with its iixed jaw adjacent the surface of the airfoil, the handle lever 26B is pushed away from the handle portion l l, and the notch of the housing is advanced over the margin of the cover ing until the locating surfaces i3d touch the edge of the covering. The handle lever 2B is then pushed toward the handle portion il, straightening the Vtoggle and gripping the margin of the covering. The covering may then ce stretched, by pulling on the handle portion, to a position Where screws may be entered into the hollow rivets through the apertures lia of the covering. By proceeding progressively along the margin oi the covering with Vsuccessive pulling operations,

Y by the following claims.

progressively secured to the 2,460,007 Y Y Y a and saidV tubular body respectively at opposite sides of said element of the toggle adjusting means.

2. A gripping and pulling tool for applying a Y covering of sheet material to a surface, said tool comprisinga tubular'body having al longitudinal open notch at an VendV thereof to receive amargin of a covering,'a wallrof said vbody adjacent Y .the notch having a stationary jaw, a moveable stretched progressively over the airfoil in'tof alignment with the pins and its apertures passed thereover to secure it in stretched condition; In

effecting step by step stretching the fulcrum arms.

40 isheld against a pin laterally adjacent to the gripped portion Vand the tool is swung about such A pin as a fulcrum to assist inthe pulling action' After Vthe coveringl has been secured overall ofthe pins, the pins' as shown in the drawing.

are removed one at a time and replaced as'. removed with permanent securing screws.

Variations may be Vmade Vwithout departing from the scope of the invention as it is defined Iclaim: V- Y w V1. A gripping and pulling tool for applying 'a covering of sheet material to a suriacesaidV tool comprising a tubular'body having a longitudinal open notch at an end thereof to receive a margin Vof a coveringla wall of said body adjacent the' notch having a stationary jaw, a moveable jaw mounted in said'tubular body,A toggle means be# tween said moveable jaw and a wallroisaid body opposite said'xed jaw, a handle at ,the end of said body opposite said notch'for manipulating said body, and means comprising an element eX- tending through said tubular body `from aregion K adjacent said handle for moving said ltoggle means to clamp said jaws upon a margin oi the covering,V said togglemeans Acomprising a pair of moving'struts engaging said `moveable Vjaw jaw mounted in said tubular body, toggle means between said moveable jaw and a wall ci said body opposite said fixed jaw, a handle at the end vof said bodyvopposite said notch for manipulatingv said body andA meansl comprising a rod element extendingthrough said tubular body from a region adjacent said handle for adjusting said j toggle means to clamp said jaws upon a margin 'of the covering, said toggle means comprising a pair-lof moving struts engaging said moveable jaw and said tubular body respectively and having connection with said 'rodelement 'ofthe tog- Ygleadjusting means at opposite sides of the lat- Number ter; and said toggle Yadjusting means comprising a lever pivoted on saidbody adjacent said handle and pivotally connected to said rod element.Y

; Y VICTOR H. HASSELQUIST.

Y REFERENCES CITED The following references are of record in the 111eY of this patent: Y

.- UNITED STATES Pli'rnirr'sV Name A Date Y 893,602 Bond L. Q July 21, 1908 1,224,846 Brooks May 1, 1917 1,237,875 YDickerson Aug. 21, 1917 1,314,072 Ensteness i.-- Aug.' 26, 1919 V1,35fi,948 VvWheatherly eoe- Oct. 26, 1929 1,765,783 f Young June 24,1930 2,082,669 Voigt` ;i June 1, 1937 1944 Colley V s Julyv 18,

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