US2654128A

US2654128A - Storm window

Info

Publication number: US2654128A
Application number: US736723A
Authority: US
Inventors: George W Day
Original assignee: Borg Warner Corp
Current assignee: Borg Warner Corp
Priority date: 1947-03-24
Filing date: 1947-03-24
Publication date: 1953-10-06
Anticipated expiration: 1970-10-06

Description

Oct. 6, 1953 3, w, AY 2,654,128

STORM WINDOW Filed March 24, 1947 2 Sheets-Sheet 1 i I i I 1 fizz/6712 27 6071963 Zd cg Oct. 6, 1953 G. w. DAY 2,654,128

STORM wnmow Filed March 24. 1947 2 Sheets-Sheet 2 Patented 'Oct. 6, 1953 tion of Illinois application 24, 1941-; swarm-1a 6323 512mm. (c1.v 22045 This invention relates to combination storm and screen sashes andmore particularly :to an adjustable sash 'for supporting seasonably ainterchangeable screen. and glass panelsdn accordance with climatic or -weatherconditions sma method of assembling the sash and installing the sash in a conventionaiwindow frame =015a building.

The primary object of the invention is 'to pro- -vide a metal shash of'the type adapted tot-beinstalled in conventional building 4 aperture frames and which is adjustable in width and 'height to fit :a wide variety of aperture dimensions and also to adapt the sash to aperture .framesthat :ar'e out-of plumb or not square.

further object of the-in-vention is toprovide a storm. and screen sash of simple construction, inexpensive to manufacture and .which can be economically shipped :and stored :in disassembled condition and readily andquickly assembled/at the 'job by unskilled workmen withoutfithe usesor special tools orequipment.

A further object of the invention-isito provide a sash of the typementionedabove comprising a-screenor glass panel-holding frameconstructed of adjustable parts disposedbetween the screen or glass panels and the conventional building :aperture frame and-'efiective to :fornna weather tight .and wind-arresting seal in conjunction therewith.

A still further objector thednventionds-toprovide. a combination storm and screen sash which, "when assembled with conventional windowaperjturezframes, affords a neatandrattractiveappearances-from the inside and. outside.

A further object of ztheinventionisito provide a sash .of the type mentioned having improved means .for retaining an associated :storm window in a ventilating position.

Aiiurther object of theinvention :is do provide a screen and storm window retaining' frame comprising relatively adjustable parts including top and sill members adapted :to function as frame to maintain the latter iin'predetermined spaced parallel relation l-corresponding "to tthe width :ofithe screen ors'torm-windowsfto provide a close fit while preventing binding :of the storm "onscreen panels cluringrassembly andtdisassembly like parts are-designated -by like reference characters, :and in which:

F 1 is a front in de ei vaionaiview of "a sash :"embodying the invention installed in a conventional building aperture frame; .Fig. i25isa sectional view 'ofthesash and the building 1 aperture "frame structure :taken along the. lined-41 -0feFig' .1,. the dotted lines indicating .atheidisposition'of thelower panel in its ventilat ing position;

Fig. 3' is an ienlargedsectional viewltaken along the"linetfi tof'fi igsl;

:Fig. 4: ismnxenlargedsectional view taken along :the line :4-44 of Fig.1;

{Fig.5 iszan enlarged sectional view l taken along :the 1ine15-5 of 'Fig. .1

:6 i :an enlarged section -I taken .along the :1ine&5-'-i@6. ofiFig. .1; i .-.Fig. '7 is sin-enlarged section'takenalong the line .of'Fig. 11;:and

.Fig..8 is assc'tional-viewtaken on line 8--"8 of {Land illustratingzthe manner'of maintain- ;ingthe adjustable frame of r the. present invention insits adjustediposition.

-.These drawings are to be understood as being more or .less of aschematic character for the purposeof disclosing a "typical or preferredem- :bodiment of the improvements contemplated herein, and in these drawings like reference characters ,1identii'y the same parts "in the -;difierent views.

Referring to theidrawings; the improved room- .blnation screen and. storm sashtofthepresentin- :.vention is. adaptedto'bem'ount'ed in and secured to :a conventional building aperture :irame i-neluding-the post structure l0 comprising top and sill sections I l and Hand side sections [3,.

The combination storm and screen sash assembly :that 1 embodies an illustrative part of the 1 present invention, comprises a screen and -windew-panel receiving zframe which is a metallic structure comprisingzthe top and bottom rails or segmentsorzadapters l4 and i5 andthe .vertical :rails 1.01. "side segments ,or adapters 16, IS. The "top and v:side segments angle members 1.4 and i6, :16 are cf Lesectionas shown .in ."Figs. 3, :filand 7 and eachadapter has one of the;angu'1arly:dis- :posedlwrtions thereof :firmly attached tot-he :en-

gagedaportion of the post'structure by screw H and i-the other aouter angularly disposed portions of thesersegmentszproject within the-opening deiined by thexrespectiv'e walls of the-building aper- *ture .frame 1.0 for engagement. with adjustable guide members as hereinafter described. The

rrameto,the wsi1s rs; I9 of-the adapter 'co -a-cting with an adjustable guide member as hereinafter described. It will be apparent from an inspection of Fig. 1 that the side rails l6 extend longitudinally of the window opening and from the top to the bottom thereof and also that the top and sill sections M and I5 extend for the entire width of the window opening in the frame l0.

Referring now to Figs. 3, 6 and '7, it will be noted that the top adapter H and side adapters l6, l8 have inwardly extending portions thereof mounting

adjustable guide members

20 and 2|, 2|, respectively, and the sill member or adapter |5, as shown in Fig. 5, has the channel walls l9, l9 thereof telescopingly received within an adjustable guide member 22. The guide members 2|, 2| extend co-extensively with the associated side adapters from the top to the bottom of the building aperture defined by the frame I and the top and

bottom guides

20 and 22 extend substantially for the length of the associated top and bottom adapters l4 and I and have their opposite ends thereof in abutment with the side guides 2 I, 2| thus serving as templates to maintain the side guides in spaced parallel relation conforming to the widths of the associated glass and

screen panels

29 and 30.

As clearly shown in the sectional views, each of the guide or channel members are of similar construction and are of H -section with the flange portion thereof extending inwardly from the channel-defining portion and forming a substantially continuous retaining strip about the inner margins of the panel-receiving frame for ing the same, these connecting webs of the top and bottom guide members 20 and 24 being identified by the

numerals

26 and 21, respectively, and the connecting webs of the side guides 2 I, 2 I, being identified by the

numerals

23, 23.

It will be apparent the

guide members

20, 2|, 2| and 22 thus embrace and surround the upper glass panel 29 and the lower screen panel 30 to mount the same and to retain said panels against outward movement.

A feature of the present invention is to provide relative adjustment between the adapters, attached to the building aperture frame or post structure in, and the guide members, mounting the screen and glass panels, to adapt the sash to conventional building aperture frames which vary in size and also for the case where such frames are of wooden construction and may be slightly deformed or out of square from settling of the building and from the weathering, warping, and the like of the wood of whichthe wooden window frame is made. To this end, each of the guide members 20 to 22 inclusive may be adjusted relative to the adapters by bodily sidewise movement to or from the associated adapter, as well as by tilting the guide member at an angle to the associated adapter, and thereafter securing these relatively adjustable members together in adjusted relationship. Each guide member may thus be adjusted relative to the associated adapter in the aforesaid manner after their assembly to space the side guide members to engage the opposite ends of the top and bottom guide members whereby the side guide members will be positioned to engage the side edges of the

panels

29 and 30, and also to space the top and bottom guide members a distance corresponding to the combined lengths of the panels to engage the top of the panel 29 and bottom of the panel 30.

The means maintaining each guide member and adapter in assembled relationship during such adjustment and to fix the same in their adjusted position will now be described.

Referring now to the top construction of my improved frame illustrating the feature of ad justability of the guide member 20 relative to the adapter H to obtain this desirable result, the guide member 20 as shown in Figs. 3 and 8 has an outer wall 3| thereof provided with a transverse slot 32 and a speed nut 33 of U-section, and preferably of spring material, receives therewithin the portion of the wall 3| defining the transverse slot 32 therein. The speed nut 33 is provided with annular openings in its spaced webs in alignment with the slot 32 in the wall 3| of the guide member 20 and an annular opening 34 in the engaged angle portion of the adapter H for receiving a bolt 35 extending through the opening 34 in the wall of the adapter I4, the slot 32 of the guide member wall 3| and the openings of the nut 33. It will be apparent that the bolt 35 will prevent relative movement of the nut 33 and adapter l4 while permitting bodil sidewise movement of the guide rail 20 relative to the adapter M as well as tilting movement of the guide rail relative to the adapter M in the plane of the frame to allow a considerable range of adjustment of the guide rail 20 relative to the adapter l4. After the desired adjustment of the guide member 20 relative to the adapter H, the bolt 35 will securely hold the guide to the adapter inasmuch as the bolt 35, during rotation thereof, will, through its engagement with the flexible portions of the nut defining the openings therein, grip the nut to cause movement of the nut toward the adapter l4 and with it the guide 20. Upon completion of the inward movement of the bolt 35, the combined action of the bolt 35 and nut 33 will be effective to secure the guide member 20 and adapter I4 in fixed position preventing relative movement thereof.

Each of the side guides 2| may be similarly adjusted by bodily sidewise movement thereof and angular tilting thereof with respect to the associated adapter NS for the purpose of securing a desired adjustment and, each guide 2| may be fixed in its adjusted position by a nut 36 and bolt 31 identical with that previously described and functioning in a similar manner to maintain the guide in a fixed position with respect to the associated adapter. However, the bottom adapter I5 and guide 22 are adjustably assembled by the nut 33 receiving therewithin the outer wall IQ of the adapter l5 and the bolt extends through the engaged outer walls of the adapter and guide member and the nut 33 as shown, the outer wall |9 of the guide member having a. transverse elongate slot therein for allowing relative movement of the adapter and guide member.

The speed nuts are clamped 0n the top and side guide members and the bottom adapter prior to assembly of the guides with the adapters and, after assembly, the nuts are attached whereupon the aforesaid relative adjustment of the guides and adapters may be had. The nut and bolt as- -semblies..-can then be utilized to 11x thesezmemhers .of the frame in their gadiiustedipositionsn It will'be apparent from the foregoingdescription regarding. the :features of .the. ladiustability of ethesash frame that the :top, bottom and side adapters may :be individually secured to the side and transverse walls of the :casingsof buildin apertures, such :asthe .ztrame :Lll, :which :vary in spacing and :ang'ularity and thereafter at-he ion and :bQtllOlIlxgllldfiS as well-as theside guides may be adjusted relative :to their associated adapters "by :bodily :si'dewise movement or the gnidesntelae tive to the associated adapters :as :well tilting of thezguides relative to the adapters sintheplane of :the frame to engage the .outeredges of. .the panels whereby considerableilexibility is/afforded between the guidesand adapters-toadapt the adjustable Irameto different sizes". ofibuildirlg aperture .frame .openings and to compensate .iior out-of-squareness of the building aperture frames.

.As will be apparent from a consideration of Fig. l, the assembled bottom. or sill .guide rail 22 and theadapter 1.5 are received between .the

side guide rails

21,21, and are held against :the flange :

portions

25, 25 .ofrthe side guide. rails ;to prevent outward movement thereof and the adapter I is held against the sloping sill all of the :frame 1J0 :by clips 31a. and 31b secured :to the side guides asshownin Fig. 1'7 :by bolt 'andspeed nut arrangements identical to those utilized in guide rails asshown in Fig. 1, with..--their.-oppo'site ends abutting respective .sidejrails they will serve as templates by their position between the side guide rails to maintain the side railsa fixed dis- ;tanceapart corresponding tothezwidth .of :the

panels so that, when the latter are adjusted in the frame, the side .guide rails :will, whilesnugly fitting the panels, prevent binding .of ithestorm and screen panels during z-assenibly and vdis- .assembly a with respect to the :frame.

'Theaupper and lower panels-'29 and wareipositioned within the adjustable frame and are retained against the continuous "retaining .strip provided by the flange portions 23,924, 24 and of the guide rails and, constituting :the inner margins of thefra-me, in a. manner =-now to be described. The retaining means for the upper panel are the side spring members or clips 38 which as shown in Fig-6 are secured to the inner side wall;39 of each of the :sideguiderailsM by means of aspeed nut-andscrew-arrangement I similar to those used in -mai'nta'i'ning each adapter in fixed assembled relation with its associated guide rail. The resilient {clips 38 are thus carried by the inner wall of the frame side guide rail and-extend-ove'r the trams-o ening toengage-the inner face of the upper panel 29 adiaoentithetop andbottom thereof to hol'd "the :upper panel against horizontal inward displacement while resiliently retaining the a panel :against vertical *movementiin response ;to gravity. it-will ,be apparent. that the lower sash ."Qlip 38 shown in Figs. 1 .and2wi11notonly engage the upper sash for :the purpose described but will also engage the upper end of thelower panel. 30 to prevent inward horizontal movement of that end thereof. To maintain the lower end of the panel .30 against the outer retaining strip-of the sill and side-guide ,rails, rotatable locking elements .or, fasteners 38 are .Divotally -;mounted on the. .inner .wall of the sillguide so thatin the :full line positions shown 1, these fasten: ers will extend over the inner face of the lower end of the panel 30. and lock the lower endof this, panel against inward horizontal movement. ifidesired, :asingle panel having a length corresponding to the combined length of -the

panels

29 and 30 may be mounted in the irameby removing the

flexible clips

38, 38 andutilizing rotatallole. fasteners, such as the fasteners 38a, in their pace.

. It will be. apparent from the various :views of. the drawings that, the engaged portions of the adapter and guide :rails of the adjustable frame will bod sposed. between th panels 29. .30 and thesoonventional building aperture .Irarne :Igfl :in. such .;manner as to be effective to ,f -orm a weather-tight and wind-.flrresting seal in conjunction therewith. To provid su h a seal b ween the upper nd l we panels an 30, theybottom of the glass-holding, ;frame of the panel 2.) is formed to provide a channelQFig. .4) the "downwardly projecting sides 40 and 40a. thereof overlapping opposite :sides of the upper part of thescreen panel 30, this conne i al maintaining thep nels. in..interlooki e en a ementwith each other andassistin n ma n a ing the lower sash in position.

:Referring to Fig. ,2, each of the inner side portions of vrthe frame J0 is provided with a ventilating bracket. g nerally designated ,at Al having .aneularlyedisposod p rt ons 4 a d '4 the p rtion .42 being secured toth'e adiacent side section .of the. building aperture frame by screws 44 and the other :portion aneularly disp d w respect to the-portion Mmr i o ward thebottom-.of-.cthe adjustabl :frame and be ng revers y. ent to, .form a .U-shep d retainin clip 45 having a, channel. A6" ther in .for receivin th lower end of :the panel -30 to maintain the same 111.13 ventilating position.., While a screen has been shown to illustrate this .feature I of the ;invo ition, the brackets are adapt :for a glass panel, such as the panel .29 inasmuch as the irameis adaptedgto lholdtwo glass panels 29 or two screen panels 13.0 d pe d n up h s s @ndweatherpr climatic conditions. The brackets thusjrholdythe ;b0ttom.:Danel open for ventilationandtheupper end otthe panelis held against the downwardly projecting bottom portion of the panel 29 by'the lower clipsflil, -38.

Thepanelsiil and .130 -may-be readily inserted wlithinthe adjustable ifx fme by disposing ithii f ipp r panel 7:29 ;;beneath the :lower clips '38 with it outer side ed s against 'ithe flange portions 2-25,;25of the side guiderrailsandrthereafter push- :ing the .panel :upwardly into .the position shown :in his. v 1, the. bottom ;panel :30 being inserted by :disposing :the top.:thereof w ithinthe channels inrtheabottom :otztherpanel: ZQ-andthereaftenmow ins thellowor portion ofzthapanel-into the frame opening -for.iensaeementewith the. outer retaining portions thereof, the locks 233a, 38a thereafter being rotated to fasten the lpanel .138 :in ip'osition.

.It will.rbe appa-r.-ent "from -:th e lioregoing scle- :oription {that the adjustabl sash :f-rame -:is lot simple construction inasmuch as it comprises perfectly straight vertical rails or side adapters and guides and also horizontal rails constituting the top and bottom guides and adapters that may be readily formed by an extruding or rolling operation and inasmuch as all of the adapter rails have uniform angularly disposed portions they may be formed in a continuous strip which may be severed to correspond to approximately the length or width of any building frame opening. This is equally true of the top and side guide rails, and also the bottom channel-shaped sill. adapter. Inasmuch as these respective members of the adjustable frame may be formed as continuous strips of relatively simple structure, the adjustable frame is relatively inexpensive to manufacture.

Another advantage of the invention is that due to its flexibility and adjustability to various sizes of building aperture frames, it can be readily adapted to fit different dimensions of these frames, as well as such frames which are slightly deformed or out of square. This feature of adjustabillty of the frame of the present invention is considerably enhanced inasmuch as each of the guide rails at the top, bottom and sides of the panels adjacent thereto are independently movable relative to each other so that the frame may be adjusted readily to compensate for alterations occurring in the wood building aperture frame due to weather conditions causing warping or other changes in the wooden frame after the frame has been installed and thereafter, in the event further alteration of the wooden frame occurs necessitating another ad-- justment of the frame guide rails and adapters relative to each other.

In view of the fact that the component parts of the adjustable frame i. e., the adapters and guides are formed perfectly straight, a large quantity may easily be packed, shipped and stored in an economical manner inasmuch as the space required for such purposes is small in comparison to the amount of the rails and guides required for any particular house or building. A further saving is effected by cutting the straight rails, forming the guides and adapters, to different lengths for assembly with building aperture frames of different standard window openings so that, if desired, the rails may be out to lengths ordered by building contractors or ordered to fit the needs of the individual home owner to meet their respective requirements.

A further important advantage of the present invention, is that the unassembled component parts of the adjustable frame of the invention may be easily transported to the job and may be quickly assembled at the job by a person with relatively little experience and without the use of special tools or equipment.

It will be apparent that the economy secured by the relatively small space required for shipping and storing the component parts of the frame in disassembled condition and the simplicity of in stallation and adjustment is greatly desirable besides effecting substantial savings for the home owners or building operators, which factors are of considerable appeal to the buying public in ordinary retail stores, mail order houses, as well as to the business houses having for their occupation the installation of combination screen and storm sash units.

It will be apparent from an inspection of the drawings and particularly Figs. 1 and 2 that, when the improved storm and screen sash of the present invention is assembled with the conventional building aperture frame, the outer and inner sides of the adjustable frame are flush with the seasonably interchangeable panels mounted therein to afford a neat and attractive appearance from the inside and outside of the building.

It will now be clear that there is now provided a combination storm and screen sash of the type described which accomplishes the objects of this invention. While the invention has been described in its preferred form and while certain terms and specific language have been used, it is to be understood that the embodiment of the invention as described and shown, is merely illustrative of the broad idea and is not to be considered in a limiting sense. It is further obvious that various changes may be made by those skilled in the art without departing from the spirit of the invention as disclosed and defined in the appended claims.

I claim:

1. In a sash structure for mounting in a window aperture of a building aperture, a metallic panel-receiving frame comprising top and bottom bars received between side bars, each of said bars being channel members having inner and outer webs and a connecting web adapted to seat against an adjacent edge of a panel, said connecting web having a flange extending into the panel-receiving opening for engagement with a side of a panel; top, bottom and side sealing members mounting said bars, each of said top and side sealing members being of L-section and said bottom sealing member being of U-section, each sealing member having one of its flanges seated against the outer web of the bar mounted thereon, each of said frame bars being movable relative to each other bodily sidewise and at an angle in the plane of said frame whereby said bars may be adjusted to position the connecting webs thereof in engagement with the edges of a panel, said top and bottom bars being the same length as the panel width and having their opposite ends abutting the connecting webs of said side bars and acting as templates to maintain said side bars in spaced relation corresponding substantially to the panel width, said flanges of said side bars at the ends of said bars overlapping the ends of said top and bottom sealing members and bars, and means for securing each of said bars to its mounting sealing member in fixed relation thereto.

2. In a sash structure mounting in a converv tional window frame of a building, a metallic frame mounted in said window frame and comprising top and bottom bars and side bars defining a panel-receiving opening, each of said bars being of channel shape with the web connecting the inner and outer webs thereof being adapted to seat against the adjacent edges of a panel and having a flange extending from said connecting web inwardly of said panel-receiving opening for engagement with the side of a panel to be disposed in said opening, top and bottom and side sealing members slidably mounting said frame bars and for sealing the spaces between edges of the panel-receiving frame and the walls of a building aperture, each of said bars being bodily movable sidewise relative to each other and the sealing member mounting the same to engage the connecting webs thereof with the adjacent edge of a panel within said opening, said top and bottom bars being the same length as the panel width and having their opposite ends abutting said connecting webs of said side bars to insure engagement of said side bars with the adjacent edges of a panel and the inwardly extending flanges of said side bars overlapping said ends of said top and bottom bars, means connecting the outer web of each bar to the sealing member mounting the same for maintaining the bar and sealing member in assembled relationship during relative movement thereof and for securing the same in fixed position, means for securing said top and side sealing members to the Walls of a building aperture, and means for holding said bottom bar and sealing member in assembly with the assembled side bars and attached sealing members in a manner permitting said bottom bar and its attached sealing member to be removed as a unit from said sash structure while said side bars and their attached sealing members are maintained in assembled relation.

3. A combination storm window and screen structure mounted in a conventional window frame of a building comprising upper and lower sash within said window frame; a metallic frame including side and transverse bars of H shape in cross-section with the channel of each bar opening toward the window frame and the flange extending from the channel toward the sash, side and transverse sealing members slidably mounting said bars and extending substantially the full length of the bar mounted thereon, each of said members having angularly arranged portions one of which portions seats against its associated bar and slidably engaging one of the spaced facing walls thereof defining the channel therein for tilting and bodily sidewise movement of the sealing members to engage the other angularly arranged portions thereof with the top, bottom and sides of said window frame, each of said bars being movable relative to each other and to each of said sealing members for engaging the webs, connecting the parallel webs of the bar, with the adjacent edges of the upper and lower sash, and the flanges of the bars with the sides of the sash, each of said transverse bars being of a length corresponding to the width of the sash and extending between said side bars and engaging their opposite ends therewith upon movement of the side bars toward said transverse bars to space the side bars so as to engage the side edges of the upper and lower sash; and means for retaining said bars and members in assembled relation during movement of said bars relative to said members and for securing the bars and members in fixed position to hold the same in adjusted position.

4. Storm window and screen structure for mounting in a conventional window frame and located entirely outwardly of the blind stop of said frame, said structure comprising an upper and lower sash; a metallic panel supporting frame having spaced side members and spaced top and bottom members, each of said members being of H-shaped cross-section throughout its length and providing inner and outer webs extending from the connecting web and toward the window frame and a flange extending from the connecting web, said flanges engaging the outer side of a panel and said connecting webs engag ing the edges of the panel; spaced top and bottom and spaced side sealing elements engaging said members each of said top and side elements being of L-shaped cross-section and positioned to have its inside angle facing inwardly of the window frame, with one web thereof engaging the exterior surface of the outer web of the correspondingly located member and the other web of each member seated against and fixed to the window frame, said bottom member being of U- shaped cross-section with the parallel webs there- Of extending between and engaging the inner and outer webs of the bottom member while the connecting web of the bottom member engages the window frame, each of the engaged side members and elements extending between and having their ends engaging the top and bottom of the window frame, and each of said top and bottom members and elements extending between and having a length corresponding exactly to one of the length and width dimensions of a panel mounted in said frame and having their opposite ends at right angles to the element or member and engaging the connecting webs of said side elements in planes inwardly of said members to maintain the side members in such spaced relation so as to engage the edges of the panel, the flanges of said side bars at the ends thereof overlapping the ends of the top and bottom members to conceal the ends of the top and bottom members and to provide a, seal preventing the entrance of rain between the elements and members, and means securing said bars and members in assembled relationship.

5. A combination storm window and screen structure as set forth in claim 3 wherein said means for retaining said bars and members in assembled relation during movement of said bars relative to said members and for securing the bars and members in fixed position to hold the same in adjusted position comprises spring members of U-shape receiving between their parallel webs one of the flanges and a bolt extending through aligned openings in the parallel webs in the spring members and the flange, and an elongated transverse slot in the one flange, said parallel webs of the spring members having their sides defining the openings therein grippingly engaging the threads of the bolts.

GEORGE W. DAY.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 267,519 Grimshaw Nov. 14, 1882 504,581 Haywood Sept. 5, 1893 1,048,988 Mayo Dec. 31, 1912 1,154,399 Hull Sept. 21, 1915 2,103,833 Tinnerman Dec. 28, 1937 2,156,964 Biddle May 2, 1939 2,262,670 Ensminger Nov. 11, 1941 2,292,273 Kaufmann Aug. 4, 1942 2,293,399 Moecker, Jr. et a1. Aug. 18, 1942