US1799464A - Clamping device - Google Patents

Description

April 7, 193.1.'

c. H. HlsER CLAMPING DEVICE Filed Feb. 15, 1929 INVENTOR EY M ATTORNEYS A A y A further object of the invention is to provide an arrangementy in which the brackets to Y 11i-l lid or rcoverof a vshipping case vor receptacle Patented Apr. 7, 1931 GASKET coivrrANr, for sramerrnnnoidnooRPoRArrIoN "or OHIO? f y Y :maaar-1 i oHAaLEs-H. HISER; or SPRINGFIELD, oHIdfAssIe-Noitzrro THE SPRINGFIELn Mn'rALLof j oLnMrING DEvIeEV' Application'led'February 13, 19729. "Serial No14 339,714.

This inventionrelates to improvements in clamping devicesfilt more particularlyy'relating to a clamping device kof the .typewhich employ-s' a hinged arni and a clamping lever carried thereby. v i, j, l

One of'y the Objects of my. invention is to` provide improved means for .positioning the clamping leverrelatively to the surface with' vwhich it coacts, ammore specilicobjectin this connection being to providea clampingidee.y

' vice, the pressure of whichniay bereadily in,-A

x meet conditionsof use.

creased ordecreased as occasion l demands to Aurther objecty the invention is to provide y'for stiening the end of the arin to which the clamping lever is pivotally conl nected to enable the arm at that point to resist the strains applied thereto during the clamping operation.- n

` Alfurther object of the invention'is to provide an arrangement in aclamping device of the character referred -to whereby the arm and its clamping lever will Ybe mounted in proper relation with the surface to be clamped.

which the clamps are attached to therecep-v tacle also act to-stiffen the gasket receiving y grooved portion of the receptacle.

A further object of the invention is to provide a simple, inexpensive and durable clamping'device effective forthe purpose for which it isdesigned.

In the accompanying drawings: p Fig. 1 is a front elevation of a clamping -device embodying 'my improvements shown applied to a container and its lid, a only of each of which is shown.

Fig. 2 is a vertical section onthe line 2-2 of Fig. 1. .v j Fig.,3 is a topplanyview of the parts. The improved clamping device yhas been morevparticularly designed for clamping the portion i Wtion of such a receptacle is indicatedat 1 and a part ofthe lid at2'. Theedgeso'f'the lid are formedwith a horizontal portion`2 having af anY air-,tight receptacle is provided.' v ,Iy Y

lurali-ty of down-turned*-f1ange2ff along itsQonter -jandthis horizontal portion is designed to be clamped against a gasket?, y which is seated in l a groove Jformed in ilange lfextending about the edges or'v the receptacle, ',When the horizontalportion .2. of the cover is pressed downon` the gasketwith sufficient pressure I It will be :understood/that "a :p l clampingdevices such assho'wn are provided about the receptacle, only onegoisuch clampprovided a; bracket formed of l a vU-shaped metallic memberfl whichlis'- secured to the Ving. devices .being shown in the ...present l instance.r For eachi'clainpingv device there 1S side Vof thereceptacle ljby-spot welding or n any other suitable means, the bracketfbeingsecured to the'. receptacle with the upper edegs pont this. member against the pressure of the gaskets... t. ,i Hingedtogal -pintle 5i carriedkbyv the `legs 11 is a flat arm 8 of'sheet metal, thelowerle'nd of this arm beingurled Sinto an*l eyef9 gto*l oflits lside legs'pressedfasfiirmly,aspossible againstthe channel member `1 `so as to supeencircle the fpintle@ The vfupper enolof;V the arm Iis bentfat theplacesy indicatedatt-11,andrr y 12-`to impart-'to that 'end-ofthe. arma -lJ{shape,y the arm beingso bentV astoclear. the fiange,` with the U-shaped portionoverhangingthe; horizontal portion 2..v The webbetween the legsofvthe-Ushaped portion ofthefarm -is provided, with a threadedaperture lto Vre-A Y ceive a screw-r which@ forms a? stop for a block ljwhigch .is mounted `upon iapinid` which projectsl through slotted openings 1f?` and. 11S-.in thelegs of the- U-.shaped portion. Also-.mountedmponone end .of the. pin is a" `vcam 119', being secured thereonby rivetingthe endlof the pinas shown',.an,d theV pin is :con:` l fined in position by this cam andsalsoby engage ,the horizont/alportion; 2501 'thelfidlr head-.20upon its opposite end..,The yc'a1n1'19`7 i p has aleverj 21 by whichfit maybero'atedpto The block15islinountedgbetween' theilegslof d Y `limits allowedfby the'flowerends of theislo's Q y is turned to cause the cam to impinge the horizontal surface 2 the block moves up- 2 regardless of any inequality in manufac ture. v .v I n The proportion and design of the improved clamp is such that the cam, when the arm 8 is swung to clamping position, isl approxif mately over the center of the gasket or at a point on Athe horizontal surface 2 well re- Vmoved from the outer edge thereof. It will Valso be noticed that the pivotalpoint of the arm 8 is slightly within a-vertical line passing through the center'of the cam sol that any tendency of the arm 8 to swing from clamping position with the cam in clamping relation Ywith the horizontal surface 2 will be resisted by that portion of the horizontal j surface which is'on'the outside of the cam,

as the arc of the circle upon which the contacting point4 of the camwould have to swing would necessarily pass through thisv horizontal surfacel Therefore, kif the clamping device should meet with any blow which would tend to dislodge the same, this tendency would be resisted by the horizontal sur face 2 coactingjwith the contacting face of thecam; n Y The block 15 besides coacting with vthe screw 13 to adjust the position ofthe cam also'actsto stiien the U-shaped portion of the arm under the clamping [action so that there is no tendency for the outer end of the arm to bend when the pressureis applied.'

Having thus described my, invention, I,

claim: v

1. vIn a clamp of the character described, a hmged arm, a cam lever pivotally mounted on the free end of said arm, the pivot of saidv lever being movable in the direction of the `length of the arm, and an adjustable stop therefor.

U- shaped 'portion' of said ar1n,a stop for saidblock, and a cam lever pivotally connected with said block. V'

3. In a clamp of the character described, a

hingedarm having its free end benthtor a U-forrn, the walls of the U-shaped portion provided with slottedl openings, a block` mounted in the U-shaped portion of said arm, a vpin carried by said'block extending through sai'dslots', a cam lever mounted on vsaid pin, and a screwcarried by the arm forming an adjustable stop for 'said'block 4. The combination with ya fcontainer'havv a gasket receiving channeland a lid hav# ing `a horizontal *portionr cooperating with said channel, a- U'-svh'aped bracketfs'ecured to said container with the upper edges thereof in close proximity to the lower side of said channel, an arm pivotally connected to said bracket having its free end overhanging the horizontal portion of said lid, and a clamping member carried bythe free end of said arm.

5. In a clamp of the character described, a hinged arm with its free end bent to a U- form, a block slidably mounted in, the U- shaped portion of Vsaid arm, an adjustable stop forV said block'carried by` said arm, a pivot `pin carried by said block extending through slotted openings in said U-shaped portion, and a cam lever connected with said pivot pin on the outer side ofthe free branch of the U-shaped portion of said arm.

6. The combination with a container hav.

ing a. gasket receiving channeland a lid havingfa horizontal portion cooperating with said channel, a bracket securedto said container Vwith the upper edges thereof in close proximity to the lower sideA of said channel to supportV said channel, and clamping devices to clamp the horizontal portion of said 'lid to saidchannel pivotally connected with said bracket.

In testimony whereof, I have hereunto set my hand this 4th day of February, 1929.

' CHARLESH. HISER.

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