US2603828A - Sash balance - Google Patents

Description

July 22, 1952 H. R. DlcKlNsoNinI SASH BALANCE Filed 001;. 27. 1947 ATTORNEY.

Patented July 22, 1952 'STATE s PAT-ENT orties `saisir BALANCE v Henry Randel Dickinson III, Grand Rapids,

of Michigan First," 'to rprovide an 'improved 'sash balance rioi'cing elements for i, the frame' ofl the. sash. eoondytofprovide an iniprbvedsashjbalance ctur'e" including a rotating tubular"l member trailinga "spiralV vtrack witnsupporting means greatlyrfacilitatng theginounting of the balance uponf'afsa'sh while permitting adjustment. Third,v to provide an. 'improved mounting bracketforlsash balances.

Further objects relating;V to details and economies. of the invention will'appear Vfrom the vdc- 's cription'to follow. The invention is defined and pointed out inthe claims. l

, Y A preferred embodiment of theV invention. is

illustratedV in the accompanying drawings, iny

Fig. l isY airagmentary view partially broken away and in vertical section illustratingthe balance of my invention operatively associated with a window vsash and its frame.V v

. Fig..2 is, a`n enlarged fragn'ientaryY view in section onlineZ-Z in Fig. j

A lig. 3. isla 'plan view of a blank from which onefof the brackets or" my invention is formed. Fig'. 4 is a fragmentary, topiview of a sash on whichthe vbalance is mounted.

' ',Fig lB Iisa fragmentary view inv section correspoin'iing to line .5&5 of Fig. 1 showing thestrucvture of the second bracket.`

"Ref'e'rring tol the drawing,`` the reference nu- 'meralfldesignates a. window frame or 'casing in whichasash designated bythev numeral 2 is mounted, The sash 2con'rprises an upright or riser `sider'nember 3top member 4 and bottom membertlie side memberj beingv provided Awith top and bottonimembers...

Thisfis' a conventionalsashfstructure but is described in View of the coacting features of the brackets of my invention.` The sash is provided Vwithagrooye 8 in one edge'adapted'to receive the sash balance. The ysash lbalance comprises a tubular element S having aspiral groove l constituting -a track which is engaged by the follower lug Il of the torsion member I3. f This torsion member slidably. vembraces the tubular member and is providedwith a mounting arm I4, secured to the casing by means of the screw l5. At its lower end the tubular member 9 is provided with a bushing lf3 secured thereto as by the screw I9. The lower bushing is provided whichmay be quickly? lmounted upon af. window with `ratchet teeth 20 'sion rod 2| is rotatably supported in the lower fsash., the supporting "brackets" constituting reniorti's'es' '6. 'at its ends receiving tongues .1, on the Mich., lassignor to Grand yRapids.'I-Iardware Company, Grand. Rapids,

Mich., a corporation Y[application Octoberj, 1947,Serial No. 782,445 Y 'z claims. (01.16f197) at its inner end. The tenbushing and provided with a ratchet vhead coactingwith the teeth.` The lower end-of the coil spring 23 arranged within the tubular element is in 'clutching engagement with the inner end of the tension rod. The rupper end of thel spring 'is in clutching engagement with the inner end of the anchoring rod24, vwhich is -arranged through the bushingl and'constitutes'a journal for the tubular member.

The-anchoring rod'- or journal member 24 is provided with af flattened eye 25freceiving'the ypivot pinf'26 passed through the ears 21 of the bracket 258. This bracket 2S is formed as a sheet metal stamping, theV ears being turned downwardly therefrom, the bracket comprising a head portion 29 and a tapered prong' 30A adapted to `bedriven intoA the sash dowel.` This prong-.is of v'considerable length and of considerable width *atfitsv basel and has outwardly facing teethl 3| on its edges. yA reinforcin'grib 32 `is struck up 'fon-'the prongl to extend inwardly from the head, 'reinforcing the vprong at ythe point where it is subject to bending stress particularly lwhile being driven;V The ears 2"!V constitute-stops limiting the -n irivingfofthe prong into the sash. The bottom bracket- 33' is 'the same as thatA described-With the exception that.instead'of-forming the :head 34' o the bracket'withV earslitfisprovided with a bearing opening 35 receiving 'the end of the vbushing i8 which projects slightly from the 'tubular member, afs shown in Fig. l;- thefoute'r end ofthe tension rod is-slotted at 36 toreceive ani adjusting tool `for tensioning the spring.

' "lt will be noted that the prongs ofthe brackets are driven 'into'the tongues 'l' oi the top and bottom sashV members and that the edges o f the prongs engage the side edges of themortis'es as is indicated in Fig. 4. The prongs thus serve to anchor thetongues so they cannot pullout of the imortises.

* 3 skilled in the art to embody or adapt my invention as may be desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

4 relation to the anchoring rod and tubular member.

4. A sash balance including a tubular element having a spiral track, a torsion member coacting with said track, a journal member for one end of said tubular element, ak coiled spring arranged within said tubular element and connected thereto at one end and to said journal member at its other end, and mounting brackets for said tubuand sash side member, the prongs being provided with outwardly facing teeth on their sideA edges, the prongs being drivenfinto the sash interlock- Yingly engaged the tongues of the top and bottom sash members, and the sides of the mortises receiving thersame, the head of the upper bracket having downturned ears disposed parallel tosaid sash engaging stops, the end of the journal member ybeing disposed between and pivotally connected to said ears, said ears and the pivotal connection of the journal member thereto retaining `rotatable elongated Ymember and constituting said journal member against axial rotationwwhereby the assembly is swingably mounted on the upper bracket, the prongs of the brackets having longitudinal ribs extending from the heads thereof, the head' of the lowerbracket being provided with a bearingopeningforltheh; -lower end of the rotatable elongated member, I and a torsion member coacting with said track.`

2. In a sash balance the combination withva Vsash Yc omprising a side member having mortised ends, and top and bottom members having tongues 5 f disposed in the mortises, of a rotatable elongated member having a spiral track, a journal member for one end of said rotatable elongated member and attaching brackets comprising heads and integral tapered blade like prong portions having toothed edges, the blade-like prong portions be- ,ingdisposed with the planes thereof substantially at rightiangles to the lengths of said rotatable velongated member, the prongs being driven into the sash interlockingly engaging the tongues of I the top andbottom sash members, and the sides of the mortises receiving the same, the journal member being non-rotatably connected to one bracket, the other-bracket being provided with a bearing opening for the other end of the rotatable elongated member, the prongs of the brackets being disposed to be driven into the tongues vof the sash members when the brackets areA in assembled relation to `the anchoring rod and tubular member. t .j

3. In a sash balance the combination of a rotatable elongated member having a spiral track, a journal member for one end'of said rotatable elongated member and attaching brackets comprising head and integral tapered bladelike prong portions having toothed edges, the blade-like prong portions being disposed with the planes thereof substantially' at right angles to theflengths of said rotatable elongated member, the journal member being non-rotatably con- 27'0 e nected to one bracket, the other bracket being provided with a bearing opening for thefother end of the rotatable elongated member, the

prongs ofthe brackets being disposed to be' driven into af sash when the brackets'are in assembled Number lar element, one bracket having ears projecting therefrom in the direction of the length of the vtubular element, said journal member having one end thereof disposed between and pivotally connected to said ears for lateral swinging movement of the tubular element, said ears and the pivotal connection of the journal member thereto retaining said journal member against axial rotation, the other constituting a bearing for rotatably supporting the other end of the tubular member, said brackets having integral pointed blade like toothed prongs of substantial length and width adapted to be driveninto the part on which rthe tubular element is mounted. .e .A sash balance, comprising a tubular element having a spiral track and a coacting torsion member, a journal member at one end of said tubular member, and mounting brackets for said tubular member, vsaid journal member being non- 'rotatably engaged with one bracket, the other endlof the, tubular member being rotatably sup- 'ported by the other bracket, said brackets comprising head members and pointed blade-like driving prongs of substantial width and length adapted to be driven into the part in which the tubular element is mounted and having serrated edges, the blade-like prongs being disposed with the planes thereof substantially at right angles to the length of the tubular element.

6. An attaching bracket for a sash balance formed of sheet metal and comprising integral head and drive prong portions, said portions being flat and disposed generally in a common plane, the prong portion being tapered and having 'serrated edges, the head having an opening therein for receiving a part of the balance to be supported,'there being a reinforcing rib extending across the merging zone of the head and prong, said rib being struck from the body of the bracket.

'7. An attaching bracket for a sash balance Aformed of sheet metal and comprising a head portion and a blade-like prong portion integral with said head portion, said head and prong portions being disposed generally in a common plane, the prong portion being tapered and having serrated edges and constituting means to bedriven into a sash, the head portion having a pairof spaced ears integral therewith and projecting` therefrom at substantially right angles to the general plane of the bracket, said ears having aligned openings for receiving a pivot pin for 'pivotally supporting a part of a sash balance,

constituting sash Vengaging stops. I-IENRY-RANDELDICKINSON III.

REFERENCES CITED The following references are of record in the iile lof this patent:

UNITED sTATEs PATENTS Name Date 2,370,867 Luce i Mar. 6, 1945 2,384,980A Viehweger Sept. 18, 194 FOREIGN PATENTS z vNumber Country', Date V 113,819 Great Britain Mar. 4, 1918

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