US2913780A

US2913780A - Inspection window construction

Info

Publication number: US2913780A
Application number: US749885A
Authority: US
Inventors: Weisselberg Arnold
Original assignee: Wyssmont Co Inc
Current assignee: Wyssmont Co Inc
Priority date: 1958-07-21
Filing date: 1958-07-21
Publication date: 1959-11-24
Anticipated expiration: 1976-11-24

Description

NOV- 24, 1959 A. wElssELBERG I 2,913,780

INSPECTION WINDOW CONSTRUCTION 'Filed July 21, 1958 FIG. 5

INVENTOR. Arnold Wesselfberg Y/ ATTORNEY United States Pettit funk/sr INSPECTION WnsDowcoNsr-RCTON Arnold Weisselherg, Leonia, Nllgassignor to Wyssmont Company, Inc., Long Island City, l.Y a corporation Application July 21, 195s, seriaiNo. "fanarts,4 i -9 claims.' (cl.2 9`-,4o)'

"This invention relates to an inspection window construction, and more particularly,-concerns,such a window construction for association with walledv enclosures.` -In walled structures which enclose process' equipment such as drers or the like; as wellasothertenclosures, it is frequently desirable that the 'interior ofsuch structures or enclosures be subject to visual inspection at various levels. Conveniently, this is accomplished by inserting inspection windows in the wallsl oftthes'tructure at the desired levels. These windowsmust becleaned periodically `to maintain visibility;V #This yis usually.V accomplished by either directinga stream of water or cleaning fluid against the inside'of the window,whichwcleaning ac- -tion is often assistedby. a wiper manually or power op-A erated from the outside, or thel windows larehinged so as to make the inside. accessible for cleaning. zHowcver, there are' many instances :which do not permit either of the above cleaning methods to .,beusedyeither `because the enclosureis under pressurevor vacuum'or the Ypresence of a liquid cannot be toleratedinside the enclosure.

Accordingly, an object` ofi this invention-is `to provide an improved inspectionllwindow.construction `for insertion in the wall ofan'enclosing structure, whereinthe window may be manipulated in-a manner to allowtclean# ing of the interior surface thereof, from the outside of the enclosing structure;-` t

Another object ofy this invention Ais toprovide anwimproved inspection .window construction of the character described which includestatmovabletwindow adapted to permit cleaning ofz the interior surface portionsLthereof, yet leaving the opening closed by the Window in favsealed condition at all times.

A further object-0f this inventia' isetafprovide an in` spection window construction includingatframe element for the window wherein such frame, el ement `allowslfor slidable movement ofthe Window to positionsallowing for cleaning of theinteriorsurfacelportions thereof, while at the same time, the openinginthe `frame element is sealed during such cleaning operation.

Other objects of this invention will in part be obvious and in part hereinafter pointed out.

ln the drawing, Fig. l is a front elevational view of an inspection window construction embodying the invention;

Fig. 2 is a vertical section thereof;

Fig. 3 is a transverse sectional view thereof;

Fig. 4 is a front elevational view showing the window element in one position thereof; and I Fig. 5 is a similar view showing said window element in the other position thereof.

Referring in detail to the drawing, W designates a wall portion of an enclosure such asa casing or the like, it

Vbeing desirable to view the interior of such enclosure,

as bounded by the inner surface of wall portion W; the outer surface of said wall portion being indicated at l1.

Accordingly, an inspection window assembly, generally indicated at 12, is tixedly mounted in an opening 13 2,913,780 Patented Nov. 24, 1959 ICC 2 in wall portion W; said opening 13 being of circular orm.

Assembly 12 comprises a tubular frame element 14 carrying on the exterior periphery thereof a mounting ring 15 welded thereto at a point intermediate the ends of element 14. Said ring 15 carries a plurality of circumferentially spaced bolts 16. A clamping ring 17 having circumferentially spaced openings 18 is mounted on bolts 16 in abutting relation to the bolt heads. Clamping ring 17 is bevelled on its inner edge as at 19.

As shown in Figs. 2, 3, tubular frame element 14 is Set in wall opening 13, with mounting ring v15 in abutting relation to outer wall surface 11, bolts 18 pass through appropriate through openings 20 in wall structure W, while clamping ring 17 is disposed in abutting relation to the inner wall surface 10. An annular, compressible gasket 21 is located between the bevelled portion 19 of clamping ring 17, wall surface 10 at the opening 13, and the outer end of frame element 14, to provide a seal for said frame assembly, when nuts 22 are tightened on said bolts 16.

On the outer end portion of tubular element 14 there is afXed a'rectangular plate 23 having a circular opening 24 for receiving said tubular element 14. Plate 23 is formed on its louter surface with an annular recess 25 adjacent-,the opening 24 therein, said recess 25 receiving therein an annular compressible gasket 26.

A second rectangular plate 27, having a circular opening 28 of a diameter substantially equal to the inside diameter of member 14, is adapted to be movably mounted in spaced relation to plate 23 exteriorly thereof. A pair of

similar spacer bars

29, 30 are located between

plates

23, 27, at their upperand lower marginal portions respectively.v l

`

Bars

29, 30 are affixed to the outer, marginal surface portions of plate 23 by means of spaced pins 31 force fitted into .registering openings in said bars and plate 23. Thumb screws 32 in threaded registering openings in outer plate 27, spacer bars `29, 30 and plate 23 hold said outer plate 27 against said spacer bars.

The assembly 12 further includes a window element 33 located between plates 423, 27 and which is rectangular in shape. Said window element is adapted to be slidably mounted between bars 29, 3 0 to cover the opening 24 in plate 23. Window element 33 has a length somewhat more than twice the width of

plates

23, 27 so that only a portion of the total surface area of `said window element is required to cover opening 24. Felt strips 34 are aixed to the inner edges of

bars

29, 30 to facilitate the sliding movementof window element 33. Also, felt strips 35 are affixed to `the inner marginal portions of outer plate 27. Thus, when thumb screws 32 are tightened,twindow element 33 isl gripped between gasket 26 and the felt covered plate 27 to provide an effective seal for opening 24 in plate 23.

It will be apparent from a consideration of Figs. 4, 5, that window element 33 may be positioned in a manner to leave one end portion 33a laterally spaced relative to plate 27, while the other end portion 33b is within plate openings 28, as indicated in Fig. 4. When the interior surface of window portions 33b becomes dirty so as to impair the visibility therethrough, thumb screws 32 are loosened and window element 33 is slidably moved to the right as indicated in Fig. 5. The inner surface of window portion 33a being readily accessible by reason of spacing thereof from wall surface 11, has been pre viously cleaned to remove any visibility impairing material, and accordingly, when in its new position sealing plate opening 24, will allow for a clear view into the interior of the structure including wall W.

The window portion 33b which was dirty on its inner surface, now is in a position to be cleaned, since it is disposed in laterally offset relation to plate 27. Thus,

window element 33 'can be cleaned throughout its inner f surface extent to permit either end portion thereof to be left in the viewing position, yet opening 24 has been substantially sealed throughout the movement of said window element. When the window element 33 has been properly located in its new position, thumbscrews 32 are tightened to secure the seal and prevent inadvertent movement of said window element.

The window element 33 may be of glass, transparent synthetic resin or any other suitable transparent material. The tubular element 14 may have a minimum length, and positioned in the wall W in a manner to provide spacing between outer wall surface 11 and the inner surface of window element, to allow access for cleaning such inner window surface.

What is claimed is:

l. In a walled enclosure, an inspection window assembly mounted in a walled portion of said enclosure, said assembly comprising a frame, sealing means on said frame, a window element having a length substantially greater than the transverse dimension of the opening in said frame, means for mounting said window element for movement relative to said frame and in engagement with said sealing means whereby selected surface portions of said window element cover the opening in said frame, said window element being in sealed engagement with the frame opening in all positions of said window element relative to said frame.

2. An inspection window assembly as in claim l, Wherein the frame is positioned relative to the walled portion to space the inner surface of said window element from the outer surface of said walled portion, thereby allowing the inner surface of that portion of the windowelement which is spaced from the frame opening to be accessible for cleaning.

3. In combination with a wall having an opening therein, frame means for said opening, a window element covering said frame means and including a portion extending beyond said frame means, means on said frame means for slidably mounting said window element to allow one end portion of said window element to cover said opening while the other end portion of said window element is in offset relation to said opening, the inner surface of said window element being in spaced relation to said wall to allow access to the inner surface of said other end portion thereof for cleaning the same, and seal means for sealing said window element in any position relative to said frame means.

4. An inspection window assembly comprising a frame member, means for fixing said frame to a wall, an apertured plate on one end of said frame, a second apertured plate adjacent said first apertured plate, spacer means between marginal portions of said plates, a iiat window v element slidably mounted between said plates, compressible seal means between said window element and said first plate and means on said plates for pressing said 4 windowvelement against. said seal means in selected positions of said window element.

5. An assembly as in claim 4 wherein said seal means comprises a gasket which is disposed about the aperture in said first plate and in abutting relation to inner surface portions of said window element to provide a seal between said window element and said frame member.

6. An assembly as in claim 4 and including strip means on edge portions of said spacer means for slidable engagement by edge portions of said window element.

7. An inspection window assembly comprising a tubular frame member, a rectangular plate having a circular opening therein to receive one end portion of said tubular member-,fsaid plate being fixed to said tubular member, a second rectangular plate overlying said rst plate and having a circular opening registrable with the opening in said rst plate, means for spacing said plates relative to each other, a rectangular window element arranged for slidable movement between said plates, seal means between the inner surface of said window element and said first plate, means for mounting said second plate on said first plate for relative movement towards and away from said iirst plate, and for pressing said window element against said seal means, said window element having a length at least twice the transverse dimension of said platesv whereby one portion of said window element projects'from one edge of said plates to render either side of said projecting portion accessible for cleaning, while the other portions of said window element are retained in sealed relation to said frame member.

8. An assembly as in claim 7 wherein said spacing means comprises a pair of parallel elongated members respectively located on either side of the plate openings, said elongated members providing track means for the slidable movement of said window element.

9. An inspection window assembly comprising a tubular frame member, an apertured flat plate having one end of said tubular member received in the aperture thereof and fixed therein, a second apertured flat plate overlying said first plate, the opening in said second plate being aligned with saidtubular member, means for spacing said plates relative to each other, a window element located between said spaced plates and arranged for movement across the one end of said tubular member, said window element being of a length to provide one portion thereof in covering relation to the one end of said tubular member and another portion projecting beyond one edge of said plates, and means connecting said plates and for retaining said windowelement in selected positions therebetween.

36,914 Austria'. Apr. 10, 1909