US1627653A - Sheet-metal window and balancing sheet-metal sashes - Google Patents

Description

W. LANCASTER SHEET-METAL wINDokw A ND BALANCING SHEET METAL sAsHEs original Fned'April .14. 1924 A 4 shwrs-sheep 1 May 1o, 1927. 1.6275353 G. w. LANCASTER SHEET METAL WINDOW AND BALANCING SHEET METALf SASHES original Filed April 14. 1924 4 sheets-sheet 2 'Ma 1927 Y 1,627,653 y l0, G. w. LANCASTER' SHEETMETAL WINDOW AND BALANCING SHEET METAL SSHES original Filed April 14. 1924 4 sheets--sheefO 3 May lo 1927 G. w. LANCASTER SHEET METAL WINDOW AND BALANCING SHEET METAL SASHES or'iginaivleapril 14. 1924` 4 sheets-sheet 4 Patented May 1o, 192.7.

ICE.

GEORGE W. LANCASTER, OF RICHMOND, VIRGINIA.

SHEET-METAL WINDOW AND BALANCING SHEET-METAL SASHES.

Application filed April 14, 1924, Serial In a sheet metal window including balancing sashes of a sheetmetal design, the invention has for its purpose the provision of a structure wherein the parts are simpler, more condensed and compact and more easily operated than the structure disclosed in application for patent on a similar device filed April 11, 1923, Serial No. 631,416, m the name of George W. Lancaster.

In the application above identified, certain of the sashes counterbalance and others are weight-balanced and the sashes are mountedvbetween outstanding guides.

The idea of mounting` the sashes between outstanding guides causes the stiles of the wind-ow frame or easement to be constructed of considerable depth and the weights are mounted in guides of the stiles forwardly of the sashes.

This character of construction provides considerable unused space on the interior of the Stiles.

Furthermore, by mounting' the several sashesy between outstanding guides of the stiles. the balancing chains on the sashes are more or less exposed and should the sashes be raised quickly, the chains are very liable to ltr-op or move outwardly from between the guides and hence cause considerable inconvenience and delay in operating the sashes.

Also, in the above identified application, main and auxiliary lintels are employed for the purpose of housing` and obscuring the pulley supports or brackets.

.fluidi ionally, the sashes in said application have mitered top, bottomand side rails and, while such joints can be made to insure :i neat finish, the cost of production and installation of such sashes, in some instances, is somewhat prohibitive.

The above features have been the means of necessitating the provision of a structure considerably simplilied and cheapened, the aim being to eliminate such features.

For example, another purpose is to provide, in a easement or frame, Stiles provided with guides for the sashes.' and the weights, and also guides for balancing chains and the extensions of the sashes, thereby utilizing the unused space mention-ed as existing .in said application, above identified.l

It will be noted in the present case that the guides for the sashes areV countcrsunk and do not receive the full thicknesses of the sashes, hence. due to the countersinking of the guides, the heretofore mentioned un- No. 706,392. y Renewed March 26, 1927.

used space is substantially occupied by the' sash guides as Well as the chain guides;

A. still further purpose is the provision of guards extending within the chain guides, thereby eliminating the possibility 'of' the balancing chains looping or moving outwardly of their guides, which has been found to be an objectionable feature to a degree.

A further purpose is to provide, in a win- 'dowy Casement or frame, stiles wherein the `weight guides are to the side of they chain `guides portions of the latter acting materially in guiding the weights during their inovem ents, especially the weights Whichv balance the upper outermost sash.

'is still further purpose is the provision of a structure whereiny the actuating members of the weights (which counterbalance the upper outermost sash) project inwardly of the. room instead of laterally of the stiles'in a direction parallel with the sashes, thereby rendering them more easily grasped for actuating the weights and thereby securing a more positive movement of the weights and enabling the weights to be unlatched considerably easier. f

In general, the present construction of sheet metal Window, together AwithA its `balancing sheet metal sashes, is more practical, more condensed and compact in structure, and has been found to fulfill the commercial demands at a considerably less cost.

Still further, the invention aims to eliminate the above mentioned mitered joints in the construction of the sashes` and at thev same time provide a simpler assembly f the top, bottom and siderails thereof, in fact, a more rigid assembly.'

Furthermore, the sashes in the present ycase are much thinner, less material being used, and by far is a cheaper construction.

Also, the present invention aims to provide a novel construction for connecting the top, bottom and side rails ofthe sashes and, due to the balancing chains being connected to the sashes byr rivets or the like, the joints of saidrails are more rigid.

Instead of constructing sashes with their entire thicknesses Aengaged between outstanding guides. as in the aforesaid application,

f the present sashes are thinner and have re duced extension flanges on their side rails which engage within the countersimk guides of the stiles, said flanges providing much bett-er means to which the balancing chains may be connected. It will be noted that throughout substantially the entire construction, the various joints of the sheet metal ot the frame or easement and the sashes are spot-Welded.

The present invention also aims to eliminate, in the construction ol' the head ol the easement or window frame, the auxiliary lintel, and since the brackets or holders for thev pulleys are engaged with the depressed seats or channels of the stiles, the pulleys are located inv positions to be engaged by the balancing chains, thereby facilitating the operation of the sashes with minimum. binding thereof as well as the chains.

It is to. be understood that the particulars herein given are in no way limitative and that, while still keeping within the scope of the invention, any desired modilications of detail and desired, proportions may be made in the apparatus according to the circumstances.

They invention comprises 'further features and combinations of parts to be hereinafter set forth, showny in the drawings and In the drawings:

Figure 1 is a view in perspective of the improved sheet metal window and balancing sheet metal sashes. constructed inaccordance with. the invention.

Figure 2 is a vertical sectional view on l'ine- 2-2 ot Figure 1-, showing the relativity ot the various. sashes and their balancing means.

Figurev 3 isa horizontal sectional view on liney 3.--3 of Figu-re i2;

Fig-,ure l is ay horizontal sectional View onl line le-1 olf Figure 2. taken through the head of the easement or frame.

Figure 5 is an enlarged detail perspective view of the bracket orcasing which supports the pulleys tor the balancing chains.

Figure 6. is a perspective view of the pulley` bracket, looking upwardly thereunder.

Figure 7 is a detail per pective view ol the weight which counterbalances the upper oute 1most sash.

Figure 8 isa sectional view on line SWS of Figure 5.

FigureA 9 is a sectional view on line 9-'-9 ot- Figu-re 5.V

Figure .10; discloses bracketed detail perspective views of portions ol the head rail oli the easement and one otl the stiles.

Figure 11 is a detail perspective view oil' a part of one of the stiles, and showing the chain guides. and chain guards.

Figure 12 is a detail perspective view of one end of one of the sashes.

Figure 13 discloses detail perspective views of the disconnected ends ot' the top andl one side rail ot oney oit the sashes.

Figure 14 is: a detailv perspective view of one end ot the bottom rail of one o'li' the sashes.

lt will be noted that the sill at its ends' n'iay be out away, as shown at 5, to conform to the angular contour ot the adjacent surfaces of the stiles.

Referring to Figure 10, it will be seen that the-lintel or head is` shapedor cut away at its end, as shown at 6, to conform to and engage the contour oit the stile at its. upper end.

The two stiles are correspondingly constructed and are provided with depressed channels 7 which not only act as guides for veights 8 but also cont-ain the sheet metal guides 9 which receive weights 10. The guides 9 are substantially half the width of the depressed channel and are spot-weldedy in position, as shown clearly in Figures 3 and et.

The inner we ll 11 of each guide 9 terminates in a vflange 12 which is rebent as shown and assists in guiding the weight 10. The opposite portion of each guide 9,. that is, the portion nearest the iront of the stile,I is bent to provide the lateral part 13 whiclr is relient at right angles to provide the lguide flangen 111i which overlies the weight 10VV and cooperates with the body of the guide 9 to properly guide the weight 10 during its movement.

The outer' portion ort each stileis of greater thickness thanV the inner portion, hence its wall 15-y constitutes a guide for additionally guiding the weight 3.

Adjacent the depressed chan-nels are guides 16 for thev slashes and guides 17 for the sash chains. These guides consist et the angular rails 13, the channel rails 19, the outer angular rails 20v and the plates 2l.. lt will be noted that the platesA 2l contain. the depressed channels orl guides 1? which not only receive the sash chains but alsoy receive extension guide flanges 23 ol' the upper outermost and the lower innermost and the intermediate sashes 2l. and 2G and Portions of the angle rails 13 and 2() include flanges 23 which extend into certain olf the guides 1'?. The channel rails 19 stradlle the divisions 29 between the depressed channels or guides 1T and their adjacent :flanges 30 constitute the guides 16 for the extension guide flanges A3 ot' the sashes. It will be noted that the remote flanges ot the remote channel rails 19 cooperate with the llangcs Q8 ot the angle rails 18 and 20 to constitute the guides 16 for the upper outermost and the inner lowe-.lijnost sashes 2e and 25. The

angle rails 18 and 20, the channel rails 19 and the plate 21 are fastened together as one body, that is, those at each Side of the window, in any suitableiinanner, preferably by means of spot-welding. v

This structure consist-ing of the guides 16 and'17 may be moved into place by '.nserting them in a direction from the outside of the window, and when properlypositioned, the outer flanges 31 of the angle rails 2() are secured by spot-welding, as at- 32, to the walls of the beads 33 of the stiles. The beads are continuations of the walls 15, as shown clearlyl in Figures 3 and 4l. lVhen the guides 16 and 17, consisting oit' the parts as above identilied, are positioned, flanges 3ft of the angle rails 18 are positioned as spaced from the flanges 14, there being U-shaped spacers 35 intervening the flanges 3st and lei and which are secured to'said flanges in any suitable manner, preferably `by spot-welding.

The spacing ofthe flanges 34; and 14 causes guides 36 to be formed for the reception and operation of the operating arms 37 which are secured inany suitable manner, preferably by screws 38, to the weights 8. These arms extend transversely across the weights in order to project through the guides 36. The U-shaped spacers act as abutments to limit the arms 37 in their movements, said arms projectingl inwardly of the room in order to be easily grasped and facilitate the operation of the weights 8. f

Mounted -in ,the upper'parts of the depressed channels or seats 7 are brackets or holders 39 which are constructed from suitable sheet. metal, consisting of the top walls 40 and the depending flanges 41 and 412 on three. of the sides of the top 40. The top has` a cut-away portion or opening 113, and the parts which are cut to cause the openings to be formed are bent downwardly to provide depending supports 44. Secured in any suit.- able manner, preferably as shown at 115, to the tops of the brackets or holders are plates -16 having depending supports L17 which are parallel with the depending flange/sat1." The depending supports 4:4 are parallel with the depending flanges l12,

Journaled in bearings ofthe depending flanges l1 and the depending supports 117 are p-ulleys 4S for the sash chains 4:9 which are connected to the guide flanges 23 of the intermediate sashes 26 anil 27,',as2 shown in Figure 12, and thereby counterbalance the two intermediate sashes. Journaled in bea vings of the 'depending supports lll and the enddepending flanges 4t2 are pulleys 50 over which the sash chains 51 operatively ride. These chains areconnected, as at 52, to the guide flanges of the upper outerniost and lower innermost sashes and, in turn, are connected at 53 to the weights 8 and'lO, so thatthe weights 8 and 10 will counterbalance the upper outermostand lower innermost sashes.

The brackets or holders 39 are secured in the depressed channels 7 in any suitable manner, preferably by spot-welding. The brackets or holders are above the chain guides and sash guides, so'that thechains will feed from the pulleys into the guides 17.y

It will be noted that the flanges 30 and the flanges 28 protrude into the guides 17 and act ask abutment guides to prevent thek sash chains from amming orbuckling from their guides, as would otherwise be the case if the flanges 8O were omitted. The structure in the above identified application discloses guides for the sash chains but there are no means for preventing the sash chains from buckling from the guides which receive the sashes. The present inventionavoids such difliculty ldue to the depressed channels or guides 17 ,c with the inwardly protruding flanges 30 which are spaced requisitely to receive the guide flanges ofthe sashes.

As previously stated, the inner lowermost sash is weight balanced and is held locked, when lowered, by means of the latch 5l which engages the keeper 55 carried by the sill 2 of the window. This latch and keeper are similar to those disclosed in the above identified application, and by such latching means, the lower sash may be maintained in a closed position with the weight 10 in a raised positionas indott-ed lines in Figure 2. The upper and lower intermediate sashesj are counterbalanced by means of the chain 49 while the upper outermost sashis weightbalanced by means of the weights 8.

In order to hold the upper outermost sash f locked in a closed position, when .raised to its fullest extent, the lower portions of the weights have Hang-es 56 which may engage under the lateral flanges 12 ofthe guide 9.

In otherwords, the lower end-s of the lateral flanges 12 are slightly out away and when the upper outermost sash is raised to its full height, the weights 8 are lowered, and when in such position, the operator may pull outwardly upon the arms 37 and cause the flanges 56 of the weights 8 to engage under the lateralvflanges 12. Due to the weights 8 being encased and the arms 37 extending inwardly of the room, there is no way of lowering the upper' outermost sash from' the exterior.v

Each sash comprisesy the upper and lower 'and side rails 57, 58am] 59. The upper and lower rails of `each of the sashes consist o'l channel members GO, and secured, preferably f also' to preclude metal contacting with such fragile material as glass and thereby preventing breaking of the panes. The channel members (it) are considerably thicker' than the thickness of the panes of glass, hence the mounting of the angle strips 6l.

The outer fia is of the upper and loner channel rails ol tie sashes constitute interengaging means between the sas-hes. ln other Words, by means of these flanges, the losver rail of the upper outern'iost sash and the upper rail of the upper intermediate .sash are intel-locked while the lower rail of the upper intermediate sash and the upper rail of the lower intermediate sash are interlocked. The vupper rail of the lower innermost sash and the loiver rail of the lower intermediate sash are interloclred due to the provision of such depending. flanges. How ever, the upper rail of the upper outermost sash as Well as the lower rail of the inner f lowerrnost sash omit such flanges as those lwhich constitute interlockingl connections bctween the sashcs. ln fact, said rail-s are slightly' vthiol-:er than the panes of glass in order to receive the packing or binding which precludes vand prevents metal contacting with glass.

The side rails 59 of each sash are in the form of channels and are bent in cross scctional area to provide the extension guide flanges 23, the Walls of which are spaced for the reception of the extensions Gel of certain of the flanges of the channel rails 60, as shown clearly in Figure 13. llhe angle strip (il is first fastened in the channels of the side rails 59, so that the narrow flange thereof may overlie the ends of one of the sides Aof the side rails, then the channel rails t() are positioned so that certain of their flanges will engage the inner faces of certain of the flanges of the channel rails 59 so that the extension. (54 will engage in the space between the opposite sides of the extension guide flanges 23. The extensions 64: are secured in the spaces in any suitable manner, preferably by spot-Welding, and in addition to this fastening means, rivets 52, such as in Figure l2, are. employed. These rivets not only assist in holding the parts of the sash together but also constitute means to connect the sash chains to the sashes. rlhe flanges which have the offset extensions G4 are slightly depressed for the reception of the sides of the channel rails 59, as shown at 65 in Figures l2 and lil. lVhen the sash is coinpletely constructed, these joints are finished and pressed into shape and the surfaces of the flanges of the top, bottoni and side rails are flush, thereby j'nesenting a neat finish.

It is to be noted that this n'indoiv frame or caseinent may be coupled to an adjacent vindow frame or easement, so as to prov'ide a mullion vbetween the two easements. To accomplish this result, it is the aim to employ substantially the 'same means ,as that disclosed in the heretofore identified application. v

The invention having been set forth, What is claimed is: i

l. In a window and sashes therefor, a easement con'iprising a lintel, a sill and Stiles connecting the ends of the lintel and the sill, a 'plurality of sashes provided with guide flanges, sash chains connecting certain of the sashes and counterbalancing them, Weights including sash` chains connected to the other `sashes, channel guides for the reception of the extension guide flanges of the sashes and receiving the sash chains, and means for insuring guiding the sashes and retaining the chains in the chan-V nel guides to pre\'f'ent binding and buckling movement from the channel guides.

2. ln a Window and sashes therefor, a

casenient comprising a lintel, a sill and stiles connecting the ends of the lintelv and the sill, a plurality7 of sashes provided With guide flanges, sash chains connecting certain of the sashes and counterbalancing them, Weights including sash cha-ins connected to the other sashes, channel guides for the re-` ception of the extension guide flanges of the sashcs and receiving the sash chains, means for insuring guiding the sasheS and retain-V ing the chains in the channel guides to preventbinding and buckling movement from the channel guides, and guides offset to the sides of the channel guides for the reception of the counterbalancing Weights.

3. In a sheet metal window and balancing' sheet metal sashes, a easement comprising a lintel, a sill and stiles connectingv the ends of the lintel and the sill, sash and sash chain guides comprising channel plates, angular rails and channel rails constructed in sets, one set for each stile, the members of each set being fastened together in one body and placed in position adjacent the stilev in a direction toward the interior of the Windoiv, and counterbalancing sashes mounted in the sash guides.

4. In a Window and sashes therefor, a easement consisting of a lintel', a sill and stiles connecting the ends of the lintel and the sill, sash guides disposed in position4 next to the adjacent faces of the stiles and being arranged in such position from a direction toward the interior of the window, upper outermost and lower innermost and intermediate ysashes mounted for movement in said guides, the intermediate sashes being counterbalanced, Weights for 'counterbah ancing the lower innermost and the upper outermost sashes, said Weights being guided in the stiles and in perpendicular directions laterally of the sash guides, guides adjacent the stiles and the inner portion of the Window, and arms connected to the Weights which counterbalance the upper outermost sashes and sashes and passing through the guides which are adjacent the stiles, whereby they may be grasped for operating said weights and resulting in lowering the upper outermost sash.

5. In a window and sashes therefor, a easement consisting of a lintel, a sill and stiles connecting the ends of the lintel and the sill, sash guides disposed in position next vto the adjacent faces of the stiles and being arranged in such position from a direction toward the interior of the window, upper outermost and lower innermost and intermediate sashes mounted for movement in said guides, the intermediate sashes being counterbalanced, weights for counterbalancing the lower innermost and the vupper outmost sashes, said weights being guided in the stiles and in perpendicular directions laterally of the sash guides, guides adjacent the stiles and the inner portion of the window, arms connected to the weights which counterbalance the upper outermost sash and passing through the guides which are adjacent the stiles, whereby they may be grasped for operating said weights and resulting 'in lowering the upper outermost sash, the guides for certain of the weights having certain of their walls cut away at their lower portions, and means on certain of the lweights to engage under said, cut away walls :o prevent movement of such weights.

(S. In a sheet metal window structure, the combination with a sill, of opposed stiles rising therefrom, a lintel connecting the upper ends of the stiles which are provided with depressed channels, sash weights guided in said channels, sash guides opposing the channels and adjacent thereto, upper outermost and lower innermost and intermediate sashes engagingv the sash guides, sash chains connecting the intermediate sashes whereby they counterbalance and being engaged in the sash guides for the intermediate sashes, sash chains engagingin other of said sash guides and connected to the upper outermost'and lower innermost in turn connected to said weights, sash pulleys over which said chains pass, and means extending within the sash guides and maintaining the chains against4 buckling out of the sash guides. y

7. In a sheet metal window structure, the combination with a sill, of opposed stiles rising therefrom, a lintel connecting the up per ends vof the stiles which are provided with depressed channels, sash weights guided in said channels, sash guides opposing the channels andv adjacent thereto, upper outermost and lower innermost and intermediate sashes engaging they sash guides, sash chains connecting the intermediate sashes whereby they counterbalan'ce and being engaged in the sash guides'for the intermediate sashes, sash chains engaging in other of said sash guides and connected to the upper outermost and lower innermost sashes yand in turn connected to said weights, sashpulleys over' which said chains ass means extendino' i' within the sash guides and maintaining the chains against buckling out of the lsash guides, the inner faces of the stiles having guides, arms connected to certain of the weights and engaging throughvthe guides of the inner faces loutermost and lower innermost andcintermediate sashes engaging the sash guides, sash chains connecting the intermediate sashes whereby they counterbalance and being engaged in the sash guides for the intermediate sashes, sash chains engaging in other of said sash guides and connected to the upper outermost and lower innermost sashcs and in turn connected to said weights, sash pulleys over which said chainspass, y means extending -within `the sash guides and maintaining the chains against buckling out of the sash guides, the inner ,faces of the stiles having guides, arms connected to certain of the weights and engaging through the guides of the inner faces of the stiles, whereby certain of the weights may be manually actuated, thereby resulting yin lowering the upper outermost sash, the depressedchannels of the stiles having guideA flanges, 'and means on the weights which have the arms for engaging with said guide flanges to latch' such weights when the upper outermost sash is closed. Y

9. In a sheet metal windowl frame structure, a sill, opposed stiles rising therefrom, a lintel connecting the upper ends of the stiles which. are provided with depressed channels, said stiles also having depressed combination sash and sash chain guides, count'erbalancingv and weight-balanced buckling movementv from their guides.l

IO. A sheet metal sash comprising upper, lower andiside rails, the side railsconsistingof channels provided with folded extension flanges, the upper and'lower rails consisting of channels connected to the ends of the side rails and provided with extensions engaging between the sides of ythe lfolded extension flanges, means for ksecur- IRO ing the extensions of the upper and lower channels between the sides of the guide ilanges, land means tor mounting a pane ot1 glass in the .channels of the top, bottom and side rails.

ll. A sheet metal sash comprising upper, lower and side channel rails, means tor connecting the ends of said rails together at the corners ot the sash, and angle strips secured within the upper' and lower channel rails and cooperating with certain of the channel rail flanges to provide means for the reception of the edges of a pane of glass, the perpendicular flanges ot the angle strips'being spaced from the other channel rail flanges, whereby said other channel rail flanges may interlock with similar flanges of adjacent sashes.

l2. A sheet metal sash comprising upper, lower and yside channel rails, means -tor connecting the ends ot said rails together at the corners ot the sash, and angle strips serails and cooperating with certain ot' their flanges to provide means for the reception of the edges ot a pane of glass, the upperand lower channel rails beingl of substantial thickness and provided with extensions constituting interlocking' flanges, the one of the upper vrail protruding outwardly and downwardly, the one ot the lower rail protruding inwardly and upwardly.

13. ln a sheet metal window frame structure, a sill, opposed stiles rising from the sill, a lintel connecting the upper ends of the stiles which have depressed channels constituting yguides for the reception or' sash weights, said stiles having depressed sash guide channels, upper outermost, lower innermost and intermediate sashes having extensions engaging within the depressed sash guides, pulley bearings mounted in the first named depressed 4channels ot the stiles at their upper ends and including pulleys positioned over the sash guides, weights for the upper outermost and lower innermost sashes and guided in the depressed channels of the stiles, va sash chain in certain of Vthe depressed sash guides and connecting the intermediate sashes whereby they counterbalance and engaging over certain oit said pulleys, and sash chains connecting the weights and ythe upper outermost and lower innermost. sashes and Aoperating in certain Vother of said depressed sash guides.

14. In `a sheet metal window frame structure, a sill, opposed stiles rising fromy the sill, a lintel connecting the upper ends ot the stiles which have depressed channels constituting guides for the reception o' sash weights, said stiles having ldepressed sash guide channels, upper outermost, lower innermost and intermediate sashes having extensions engaging within the depressed sash guides, pulley looXings mounted in the vfirst named depressed channels of the stiles at their upper ends and including pulleys positioned over the sash guides, weights tor the upper outermost and lower innermost sasl-ies and guided in the depressed channels of the stiles, a sash chain in certain of the depressed sash guides and connecting the intermediate sashes whereby they counterba-lance and engaging over certain of said pulleys, sash chains connectingthe weights and the upper outermost and lower innermost sashes and operating in certain other ot said depressed sash guides, and means engaging within the depressed sash guides to retain the chains in position and prevent them buckling from their guides.

l5. In a sheet metal window frame structure, a sill, opposed stiles rising ytrom the sill, a lintel connecting the upper ends of the stiles which have depressed channels constituting guides tor the reception of sash weights, said stiles having depressed sash guide channels, upper outermost, lower innermost and intermediate sashes having' eX- tensions engaging within the depressed sash guides, pulley boxings lmounted in the rst named depressed channels of the stiles at their upper ends and including pulleys positioned over the sash gui-des, weights tor the upper outermost and lower innermost sashes and guided in the -depressed channels of the stiles, a sash chain in certain ot' the depressed sash guides and connecting` the intermediate sashes whereby they counterbalance and engaging over certain of ysaid pulleys, sash chains connect-ing the weights and the upper outermost and lower innermost sashes and operating in certain other of said depressed sash guides, means engaging within the depressed sash guides to retain the chains in position and prevent them buckling `from their guides, the inner faces ot the stiles lhaving guides, arms carried by the weights which counterbalance the upper outermost sash and projecting through the last named guides inwardl i oit the room for actuating said weights, thereby resulting in lowering the upper outermost sash, and means for latching the weights which counterb'alance the upper outermost sash to prevent the lowering ot said sash.

i6. In a sheet metal window frame structure, the combination with stiles provided with guides for the reception of ya plurali-ty of saslzies, ot a sill on which the stiles are supported, a main lintel connecting the upper ends of the stiles vand provided with lan upwardly termed depression extending longitudinally with the lintel, whereby 4a housing for pulley bonings m-ay be formed.

17 In a sheet metal window structure, the combination with a window sill, of opposed stiles rising from th-e sill, a main lintel conlnesting the upper ends of the stiles ,anch

provided with an upwardly formed depres sion extending the length of the lintel, pulley hoxings secured in the ends of the depression, said pulley boxings comprising opposed plates, spacing and journal pins connecting said plates, pulleys mounted on the journal pins, said pins constituting means to hold the plates rigidly spaced thereby preventing binding of the ends of the pulleys on the plates. y

18. In a window structure, a frame, sash and weight guides carriedv hy the stiles ot said frame, a lintel Jframe connecting the upper ends of the stiles, pulley hoxings countersunk in the lintell and provided with pulleys adjacent to and coinciding with the guides, upper' outermost and lower innermost sashes mounted in certain of the sash guides, upper and lower intermediate sashes mounted in other ofsaid sash guides, means passing over certain of the pulleys and Connecting the intermediate sashes, a balancing weight mounted in one of said weight guides, means passing over another of the pulleys and connecting said weight and the lower innermost sash, second i weights mounted in the other weight guides, and means passing over others of said pulleys and connecting t-he second weights and the upper outermost sash.

19. In a window structure, a trame, sash and weight guides carried by the stiles ot said frame, a lintel frame connecting` the upper ends of the stiles, pulley hoxings counter-sunk in the lintel and provided with pulleys adjacent to and coinciding with the giiifles, upper outermost'and lower innermost sashes mounted in .certain of the sash guides, upper and lower intermediate sashes mounted in otherl of said sash guides, means passing over certain of the pulleys and connecting the intermediate sashes, a balancing weight mounted in one of said weight guides, means passing over another ot' the pulleys and connecting said weight and the lower innermost sash, a second weight mounted in the other weight guide, means passing over others of said pulleys and connecting the second weight and the upper outermost sash, and means carried by the second weights and cooperating between the weight guides and engageable with the lower extremity `of one of the Weight guides to retain the second weights against movement and lock the upper outermost Sash.

20. Ina window structure, a frame having weight guides, a plurality of sashes mounted in said trame for vertical movements, means operatively connecting certain ot said sashes, whereby they may counterbalance eachother, weights operable in certain of the weight guides and operatively connect-ed tov another of said sashes, second weights mounted in other of said weight guides and operatively connected to other of said sashes. said weight guides having opposed weight spacing tongues to retain the weights separated during their vertical movemei'its, and means carried by the second weights for engagement with the lower eX- tremities orq certain of the spacing tongues to latch the second weights for locking the sash which operatively connects with said second weights.

In witness whereof the inventors signature is hereunto aliixed. l

GEORGE W. LANCASTERq

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