IL28275A - Glove holder for use in glove boxes of sealed chambers - Google Patents

Description

holder for use in glove boxes of sealed chambers COMMISSARIAT A ATOMIQUE or holders The present invention relates to securing a pliable a glove across a passage in the wall of so that ah operato operations within the chambe without having to come into contact with the atmosphere and with the objects The invention is applicable in particular in connection with chambers containing radioactive The mounting of such holders the inner end of the the wall of a chamber containing radioactive requires the use a seal including a The attachment of the sealin ring in the position a difficult operation The object of this invention to provide a holder mounting the glove across passage in the chamber accordance with terminology this passage will er be referred to The invention consists in a holder for mounting a pliable sheet or glove the glove box of a sealed chamber being a collapsible frame comprisin members articulated to toggle by means of which the frame can made stiff in an erected positio in which the bars of the toggle joints are substantially aligned with the frame the glove or the like againot the wall of the glove The frame members and the bars of the toggle joints be so that the erected frame substantially elliptic or the or they may be so that the erected frame is or In any the erected frame may be either regular the frame is substantially circular in the erected i is preferred that the pivots of the frame members and toggle joints are located on a circle of smaller diameter than the mean perimeter or median the circle in the middle between the outer and inner edges of the frame This makes a better stability of the erected invention also provides an apparatus for mounting the glove holder in the glove The invention is by way in accompanying drawings in 1 is a pla view of a holder accordin to the shown in the collapsed state in full and in the erected state in dotted Figa 2 and 3 a glove and glove respectively in on line of and in axial the holder being in the collapsed 4 are views similar to 2 and with the holder in the erected 6 is a plan view of a glove holder according to the invention in the collapsed with a fragment thereof being In addition shown in dotted lines in the erected 7 a section of the wall of a chamber in a passage of which a glove holder according to the invention is 9 and 10 are views similar to t of three further glove according to the shows in axial section an apparatus according to the invention for mounting a glove holder according to the invention in a glove 12 shows one embodiment of a glove holder to be used with the apparatus of In the examples here ted glove box of a sealed chamber by means of a holder in the erected state in which it has to remain while holding the glove mounted in the a greater than that of the passage through which the holder is to be introduced into the According to 1 to the holder comprises four rigid frame members 1 in the shape of segmen articulated at 3 to the free ends of the bars 2 of four toggle each of which has its own In the collapsed state the toggle joints point inwardl and the diametral distance between opposite frame members 1 is smaller than the diametral distance between the same frajne members in the erected dotted lines in 6 shows that in the erected state the and 4 are located inside of the mean peripheral member the circle halfway between the outer and inner edges the frame members This arrangement makes for easier locking o the frame members 1 and toggle joint bars The frame members and bars 2 may be for or from or from holder is accommodated in a hollow seam o channel of the glove 5 2 seam is clings closely to the holder in the collapsed state of latter and can be stretched as the holder is 7 shows the introduction of a holder 2 with a glove 5 through a passage 11 in the wall 9 of a sealed chamber where the diameter of the passage is smaller that of the glove box against the inne surface 8 of which the glove 5 is to be With the of the collapsible holder according to the the holder with the glove o can be introduced the outside through the and thus be mounted in the glove while with known devices it is as a rule necessary to open the sealed chamber for this which is 5 expensive e chamber contains radioactive entails risks of For introduction of the holder and glove into the sealed chamber through the passage 11 the invention provides an apparatus which has been Illustrated in 11 and The glove 5 is to be secured to the inner surface 8 of a cylindrical projection 16 of the wall which forms the glove box and has a greater diameter than the diameter of passage of the e holder is intended to tighten the seam 10 of the glove 5 against the surface The mounting apparatus shown 11 comprises a cylinder which is open at one at the other merges into an internally coaxial tubular extension of smaller into which a plug 31 can be screwed b means of a hand wheel Near this latter end the cylinder has longitudinal slots 23 in diametrically opposite These are engaged by clamping screws by means of which the cylinder can be to a flanged collar 21 which in its turn is secured a boss 19 projecting from the outer surface of the wall 9 the passage Th cylinde 20 can thus be displaced axially by so much as corresponds to the length of the slots and be looke desired Near the outer end of the cylinder 20 a gear casing 26 is dis posed within the This is a hollow piston which is able within the It contains a driving gear wheel 27 in mesh with pinions The wheel 27 can be turned by means of an axle which extends outwardly through an axial bore cylinder 20 and has fixed to its inner end a crank arm crank arm 24 merges into a lug Che glove with its about to be mounted in the glove box is in the cylinder holder being in the collapsed state while the seam 10 of the glove is held by tion within the inner end the cylinder and the lugs 25 bear against the pivots 4 of the toggle The apparatus is mounted in the passage in an axial ment of the cylinder such tha in retracted position of the plug 3 the holder and the seam of the glove 5 located in the vertical plane I In positio the holder is spread into its erected This done by means of knob as this turned it turns the axles 29 which make the 25 press oh the pivots 4 of the toggle joints so as to straigh te the the plug 31 is tightened into the tubular extensio of the Cylinder 20 by means of appropriate ing thereby pushes the gear casing 26 inwardly soi to shift the glove holder to the vertical plane hich is its intended final position within the glove box at the time of mounting glove on its holder to the glove an old glove and which have to be are present withi glove box they are by the insertion o the new glove and into the sealed chamber as a they as a waste until the chamber is cleaned After the completion of the the knob 30 and hand wheel 21a are turned and finally the collar 21 dismounted from the boss and the cylinder 20 is drawn the passage insufficientOCRQuality

Claims (1)

1. CLAIMS holder for mounting pliable sheet or glove in the glove box of a sealed chamber a collapsible frame comprising rigid members to toggle joints by means the frame can be made stiff in an erected position in which the bars of the toggle joints substantially aligned with the rigid frame for the glove or the against the of the glove A glove holder as Claim the frame and bars of the joints are so curved that in the erected state the holder a preferably substantially A glove holder as claimed in Claim wherein the frame members and bars of the toggle joints are so shaped that in the state the glove holder has an angular quadrangular or A glove holder as claimed in Claims 2 or wherein the pivots of the frame members and toggle are so disposed in the erected state of the holder located inside the line halfway between the outer and inner edges of the frame A glove holder as claimed in Claims 2 or comprising four frame members having substantially the shap of circular and four intervening toggle An apparatus for mounting i the glove box of a sealed a glove in a holder according to Claim prising a tabular adapted to be in an adjustable in a passage in the wall of a sealed which opens at inner end in the glove 8 a hollow displaceable within the tubular a driving toothed wheel in mesh therewith a number of driver pinions equal to the number of toggle joints of the glove an axle fixed to each such which extends through the tubular member carries at its inne end the glove a crank adapted to bear against the pivot of a toggle straightening the bars the as the is accessible from the end of the tubular for turning the driving toothed and accessible from the outer end of the tubular for axially shifting the hollow Holders for mounting a pliable or the like in the glove box of a sealed substantially as described herein with reference to any of 1 to 8 to 10 or An apparatus for mounting a pliable sheet or the like i the glove box of a sealed vessel substantially as described herein with reference to PARTNERS insufficientOCRQuality