US1775717A - Screen-frame construction - Google Patents

Description

Sept. 16, 1930. H. H. EVERHARD SCREEN FRAME CONSTRUCTION Filed April 9, 1929 2 Sheets-Sheet 1 gmwntoz Hf! [We/bard Sept. 16, 1930. H. H. EVERHARD 1,775,717

SCREEN FRAME CONSTRUCTION Filed April 9', 1929 2 Sheets-Sheet 2 llllll Patented Sept. 16, 1930 Ir%K F H WZEMARD;-QF CANTON, x110 semen-mine coirswjaeeeroa f rmine are Kim s,

' 1 116 inventiendrelates tofwindow screens :su'ehz asiare usecl;for-wentrlating. urposes or asifly screens, and more particularly to an "weolen' irame becomes damper Wet, "because of 'meisture an: *the atmosphere from; abnormel humiditwdew; on because of rain storms. daniphess oi m'oi'stur'e is alesorloeol"loyilthe wooden frames causing the same towswll,

p.15 thus reventing 'rfr'ee adjustment of ithe 'sereeny-andwsemetimes jnstment Whatsever.

preventingsany adoast by::eenstruet in sereensframesidf sheet met a1 which is "substantially unafiee'ted 'xmather eenditions. in iiord'er'"lthatgimetal frame: eensteueti-en be :satisfaetbry, Yfree slidaktibn between: the 5 "several adjustable frame members must =be-provided for, and me ans for" dumping i a fsepeenfabrie to the metal frame must be provided.

- Heweve'r;the preduetin xofi a screen haw ing a" metal :f amerprogvidedxwith the desired stru'etufr a oharaeteri'stiosifhas been so "expensive that such metaPfmme screens' have not been able it eempeteen the'open market with screens having-Wooden f mesa 'My-p ri'or'Tateiit NOE- 1, y l lof January 11, "1927"" iselosesiiifetal-iframe 'sereeil' 00nstruction which 'hasfthe desired "characteristics, 'but*when ship in 01-- using such screens, the channels andfedges proi idingnthe slidi g-edge centaetibetween-"the two'iifiram s jammed orbum-ped shipjoi-ng or because of talling: on a-{c'orner on-an edgewhen beingin- *stalledioruse. H Such denting-damage or in jury-*tdw-thebhannelandflange-elements may 1 prevent the screen flames from being easily orproperly-adjusted. a 2 Y hIyp'I'iOr-PEteiafiNO; 1",6953691 0i-Dece1'11her "1-1; 12928 dise'losesimetal ffiarne screen :con-

struc tion in which these difliculties are ewei may :hecome bent orj de'nted because of being product of thesame' formingrolls; thus being isimilarlin"eross'seotion. r 1

'The screen frameconstruction of the latter patent, however, does not have a continu- "ous firee edge sliding "contact betweenfthe 155 frames Which is a most desirable featu'reof imy 'liormer' p atent; The construetionro'ffmy latter {patent also 'includes various accessory :p'arts, cli s and rods hecessary for complete- 13, assemblifigthe semen P 1 2 'fl3ec'ause f thei'la'rge number of: pieces used in the menstruation of screen frames such' as f shownin'my prior patentsythe fcost of producing the same is:considrablyYgreater' than :the 'c6st 'of produeing sereens having wooden 26 frames.

v w v 'The obj e'ct '"of-theijpresent invention i is 'lhese difficulties/ have been overcame in the mheremre to provide a *imetal frame screen having a very small number of partsy'to provide a scr'een ha vinga'aficost of iconstruc 17 tionwqual toanrfieless than Wooden frame "screens; to fprovide a--scre'en havingma free sliding edge -Contact between-the adj ustable constituent :frameg' whi'ch edge contact eon- ;striietionfis proteeted ifnomlinjnry "ori damage 3-7 7.

in -shipping "on in use f to provide a screen having rounded corners and having a-neat and smoeth: appearance s and 5130 provide a scream having Lsufiicient frame strength I to Withstand the shocks and strains impdsedup-" i "m tt-1e: screen 'w'ithout the use eof rods for "reinforcement and for olampingi theiscreen -fia briiC'jt'othe frame. l i These and other objects maybe attained by I a -'e0nstruct-ion in "Which I the constitue'nt adjustable frames are-'eaheomposed' ofithree parts;.f namely; a? gframef bar -ibeht to form three sides of the se ee frame, an end bar dumped by the' franiabar tel-form the fourth side of the frame; an'd 'sereengfabfriciclam ed dire'etly'byjandhetjjeenjgortions of theframe barand end bar. V e I V a Moreover the objeets o f the invent on are attained; Qby ,i'providing; a eonstruot ion in .whichthe frame bars of both constituent .frames are the product of the sameforming ml-1s and-have lsubstant-i allylthe same cross sectional arrangement randy-in which the end ziba/ilszarexmade dammi'the sam stockw-matriall being only slightly modified in shape during assembly.

An embodiment of the invention is illustrated in the accompanying drawings in which Figure 1 is a front elevation of the improved adjustable screen;

Fig. 2, a plan view of a mitred strip from which the frame bar of one of the constituent frames is formed;

Fig. 3, a plan View of a mitred strip from which the frame bar of the other constituent frame is formed;

Fig. 4, an elevation of a frame bar partially formed from the strip shown in Fig. 2;

Fig. 5, an elevation of a frame bar partially formed from the stripshown in Fig. 3;

Fig. 6, an enlarged section taken as on the line 66, Fig. 4;

Fig. 7 an enlarged section taken as on the line 77, Fig. 5;

,Fig. 8, an enlarged section showing the manner in which screen fabric is clamped by the frame bar shown'in Figs. 4 and 6, and taken as on the line 8-48, Fig. 1;

Fig. 9, an enlarged section showing the manner in which screen fabric is clamped by the frame bar shown in Figs. 5 and 7, taken as on the line 9-9, Fig. 1;

Fig. 10, an. enlarged section showing the sliding edge contact connection between-constituent frames having frame bars shown in Figs. 8 and 9, and taken as on the line 1010, Fig. l;

Fig. 11, an enlarged'elevation of one corner portion of one of-the constituent frames;

Fig. 12, an enlarged elevation of one corner portion of the other constituent frame;

Fig. 13, a fragmentary elevation of screen fabric having .angularly cut corners, showing the same ready to be clamped by an end bar;

Fig. 14, an elevation of an end bar ready to be attached to the screen fabric shown in Fig. 13; r

Fig. 15, a fragmentary elevation showing the end bar and screen fabric attached together ready to be clamped by the frame bar;

Fig; 16, a fragmentary elevation showing the fabric and end bar assembled with and clamped by the frame bar;

.7 as on the line 1818,Fi'g. 14;

Fig. 19, a cross section showing the screen fabric attached to the end'bar as on the line 19-19., Fig. 15; and

. Fig. 20, a sectional view showing the man ner in'which the end bar is'clamped bv the frame bar taken as on the line 20-20, Figs. 1 and 16. Y

Similar numerals refer to similar parts throughout the drawings.

The screen consists of two frame sections A and B, which are slidably connected together so that the screen as a whole may be adjusted longitudinally in order that the same may be placed in window frames of varying width.

The frame A consists generally of a frame bar 21, an end bar 22 and screen fabric 23; while the frame B consists of the frame bar 24, the end bar 25 and the screen fabric 26.

The frame bars 21 and 24 are preferably formed from metal strips 27 and 27 respec tively. The continuous strip 27 is preferably first mitred at 28 and 29 at two places along its length where two corners of the screen frame are later to be formed. The mitred strip 27 is then passed through a series of rolls to form the strip into the shape shown generally at 30 in Fig.6, which in cross section may be channel-shaped, including a web 31, and flanges generally indicated at 32and 33.

The substantially Z-shaped flange 32 may consist of a downturned. portion 34 extending from the web 31, an outturned portion 35 forming a convex angle as at 36 with the downturned portion 34, and an outwardly downturned portion 37 extending from the optturned portion 35 to form the concave an- 0 e 38. i i a The substantially Z-shaped flange 33 may include an inwardly downturned portion 39, an outwardly downturned portion 40, a second inwardly downturned portion 41, an out turnedportion 42 and adownturned portion 43. The convex angle 44*is formed between .the portions 39 and .40, the concave angle 45 being formed between the portions 40 and 41, and the convex and concave angles 46 and 47 being formed respectively between the portions 41' and 42, and the portions 42 and 43, all as shown in Fig. 6.

Similarly, the strip 27 may be mitred at two places along its length as at 48 and 49 and the strip may then be passed through the same series of forming rolls through which the strip 27 was passed. In carrying out the forming operation on the strip 27, the same is shifted sidewise relative to the rolls so that the resulting channel formation will be shifted relative to the width of the strip to produce the channel shape shown generally at 50 in Fig. 7.

This channel shape may include'a web 51 n and flanges 52 and The flange 52 may be composed of a downturned portion 54, an

outturned portion 55, forming with theportion 54 the convex angle'56. The outwardly downturned portion 57 forms a concave angle "58 with the outturned portion and is then upwardlyand outwardly curved half round as at 59, and ends in the upwardly inturned portion 60 which extends substantially parallel with theoutwardly downturned portion 57 f The flange may consist of an inwardly grooves. throughoutzthe. length. of the zstripsx turned portion 62, a secondinWardlyldoWn= 1 turned portion .163 and theturned nedge 6L Convex and concave: angularr: bends are) formed between tithe several .zportions. 1 .61; 62,11 63;and64e of theflangebg zas at 65,, 66 and 6,7,

56, 58,66 and-==l67aandtheend bar will 1 Thestrips 27 and 28 are'so positionedvint. passing through the series of. forming rolls thatz-theresulting channelshapesand 50.; willizhave the .mitreiportions :28: and 29, and 48.: and. 49 registering! as shown generallyat 68-and 69 respectively in Figs. 4 and.5; and so that the'various convlenand concave angles allas: shown; in; Fig. 7 ofthe'drawingsiz inficross section 7 form; continuous ribs and Theportions 31, 84,. and 39 of the shape 30,

andportionsfil, fi land 61.0f the shape 50 thus; form a boxichannel and the registering mitre:

,,portions68 and69 extend only to thebox Within the concave anglei45 of the flange 36.-

Atdheszim' e time, the convex angle 46 ofthe; flange-33 engages the screen fabric against thejfconcave angle -38 "of the flange 32. The;v screen fabri'c is thus seeurely clamped'by the channel as shown-at 70 and7.1 in Figs. 4c and 5,. The :box'channel of -each shape 30 and 250" is then bent inwardso as to bring the IIllhIGCl edges togeth'er;to frown-threesides of the rec- 1 tangular if-rame sections A sand B having; cor ners-7and :73 WBllyShOWIL in. Figs; '11 and 12..

The formation lof the" corners" 7 2 and; .73: is

strong and: smooth. without: having any ex:

posed edges of: sheet. man and corresponds g tovthegco'rner: construction: disclosed .inamy Patent No.:1,695,081, ofDecember 11, 1928:

In assembling the iframe Agthe screenfabrie-23wthcreof has .itscornersxangularlyxcut off asush'ownat 74 'in Figs. land-n13. The

i end portion 75.of =the-fabric isthenengagedi between vthe iparallel portions176% of a the: U4

shaped end bar--22 after which the end barlis bent angularly-havingla flange portion-.77 to permanently secure the screen fabric to the endbanas is Well shown in Eigh [19.

' Each e ppor tion 78 of-the end bar isthen formed with a flange 79; andangular portions 80 and 81- as shown inFigs: 15 and 171:1

convex angle 86 engages the screen fabric 23 ribs: .and grooves of the iframe 1 bar. flanges Without the. use ofa'any. special. clamp-nor."

clampingrods.

.Meanwhile, the end-char i2-2ivis the. frame. bar 212' witltthe flange portion .78 secnrely elamipedbetween the portions; 3-1, a

have its Fend flanges:78 -secu-rely clamped by the: portions; 51, 54;; and. 61" of the {frame @bar' 24: to form :the frame section "B all as} shown. in Figs: 9 and 20." a i The end bar 25 ofztheframeasection Bvis similarin all respects to"the-.end-ban2Z;of4

the "frame sectionA excepting that the flange:- 7 7? thereof is turnedxin adi'rectionoppqsitez, llOj theflange 77 of the endbar 22 as; shownv in Fig. .20 so as to limit the opening'movement o fathe assembled screen: i a.

The two frame sections A and B are then; slidablyaengaged together to-produceth'e adjustable screen shown in Fig. 1, bylongitudinally sliding the portion: 43,; of the frame ibar; 21 within the U shapedchannel formed by; the: portions =57, 59 and 6.0 of the-.frame bar 1 2% This sliding engagemente between the: twe screen frames A'andB is a slidingziedgeicone tactsimilarrin some-respects to% a sliding edges contact shown.- in my prior- Patent 'No. 1,614,",

1910f January-.11," 1927' excepting that. the

portions formingthesame arenot" atthe' 8X1:

treme-Iedges of the screen, but are= protectcdfl from injury: and damage? by being located: along the inner adj aeent aedges ofwtheframe ba-rs21 and 2 The resulting adjustable screenis thus provided withaa'free' slidingedge contact between V e e forming the screen fabric: Theend b'ar 22 With the' screen fabric'23 secured thereto is then usli dl longitudinally into the parti'allsyi 1? completed "three-sided: frame abovedescribed. Theframemay then be placed in a suitable; pness Which-is open ated 1 to: pressthe flanges 132 and: together 5a to securely clamp the screen fabric 23 between thefi'anges in amannershofwn in Fig. 8. Durit ing thisk pressing operation, the flange 32 "is a bent inward toward the flange 33 so thatthe metal; channel-barihavi-ng av Web and sub stantially Z;-'shape d flanges extending in- Wardly therefr'ornfo'rming a plurality of box channel frame side niembers, and the screen fabric beingwsecured between and clamped by thel shap'ed flangesof the chan nel bar. i i i .2. ;A screen ineludingaa" frame, and screen fabric, the frame including a one-piece sheetv metals channel-bar; forming a, plurality of the. frame-sidemembers;t e; annel-bar in:

cluding a Web and flanges extending inwardly therefrom to form a box channel, there being a rib formed in one flange and a groove formed in the other cooperating with the rib, and the screen fabric being located between the flanges and secured between and clamped by the rib and groove.

3. A screen including a frame, and screen fabric, the frame including a one-piece sheet metal channel-bar forming a plurality of the frame side members, the channel-bar including a web and flanges extending inwardly therefrom to form a box channel, there being a rib and groove formed in one flange and a groove and rib formed in the other cooperating therewith, and the screen fabric being located between the flanges and secured between and clamped by the ribs and grooves.

4. A screen including a frame, and screen fabric, the frame including a one-piece sheet metal channel-bar having a web and substantially Z-shaped flanges extending inwardly therefrom forming three box channel frame side members, and an end bar forming the fourth frame side member, the end bar being secured between and clamped by the Z-shaped flanges of the channel-bar, and the screen fabric secured atthree edge portions between and clamped by the Z- shaped flanges of the channel-bar and secured at its fourth edge portion by and clamped by the end bar.

5. A screen including a frame, and screen fabric, the frame including a one-piece sheet metal channel-bar forming three of the frame side members, and an end bar forming the fourth frame side member, the channelbar including a web and flanges extending inwardly therefrom to form a box channel, there being a rib formed in one flange and a groove formed in the other cooperating with the rib, the end bar being secured between and clamped by the flanges of the channel-bar, and the screen fabric being located at three edge portions between the flanges and secured between and clamped by the rib and groove and secured at its fourth edge portion by and clamped by the end bar.

6. A screen including a frame, and screen fabric, the frame including a one-piece sheet metal channel-bar having a web and substantially Z-shaped flanges extending inwardly therefrom forming three box channel frame side members, and an end bar forming the fourth frame side member, the channel-bar including a web and flanges extending there from, end flanges on the end bar, the end flanges being secured between and clamped by the channel-bar web and Z-shaped flanges, and the screen fabric secured at three edge portions between and clamped by the Z- shaped flanges of the channel-bar and secured at its fourth edge portion by and clamped by the end bar.

7. A screen including a frame, and screen fabric, the frame including a one-piece sheet metal channel-bar having a web and substantially Z-shaped flanges extending inwardly therefrom forming three box channel frame side members, and a U-shaped channel end bar forming the fourth frame side member, the end bar being secured between and clamped by the Z-shaped flanges of the channel-bar, and the screen fabric secured between and clamped by the Z-shaped flanges of the channel-bar and the end bar.

8. An adjustable screen comprising a pair of sheet metal frame sections, each frame section including a one-piece channel-bar having a web and substantially Z-shaped flanges extending inwardly therefrom forming a plurality of box channel frame section side members, and screen fabric secured between and clamped by the Z-shaped flanges of the channel-bar.

9. An adjustable screen comprising a pair of sheet metal frame sections, each frame section including a one-piece channel-bar forming a plurality of the frame section side members, each channel bar including a web and flanges extending inwardly therefrom to form a box channel, one of the flanges of one of the channel-bars having a rounded U-shaped channel extending therefrom, one of the flanges of the other channel bar having its free edge portion slidably engaged in sliding contact with the bottom of the U- shaped channel, and screen fabric for each frame section secured between and clamped by the flanges of the frame section channelbar.

10. An adjustable screen comprising a pair of sheet metal frame sections, each frame section including a one-piece channel-bar hav ing a web and substantially Z-shaped flanges extending inwardly therefrom forming three box channel frame section side members, and an end bar forming the fourth frame section side member secured between and clamped by the Z-shaped flanges of the channel-bar and screen fabric for each frame section secured at three edge portions between and clamped by the Z-shaped flanges of the frame section channel-bar and secured at its fourth edge portion by and clamped by the end bar.

11. An adjustable screen comprising a pair of sheet metal frame sections, each frame section including a one-piece channel-bar having a web and substantially Z-shaped flanges extending inwardly therefrom forming three box channel frame section side members, and an end bar forming the fourth frame section side member secured between and clamped by the Z-shaped flanges of the channel-bar, screen fabric for each frame sec-tion secured at three ed e portions between and clamped by the shaped. flanges of the frame section channel-bar and secured at its fourth edge portion by and clamped by the end bar, and flanges on the end bars limiting the opening movement of the screen.

In testimony that I claim the above, I have hereunto subscribed my name.

HARRY H. EVERHARD.

Images