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Publication numberUS3324594 A
Publication typeGrant
Publication dateJun 13, 1967
Filing dateFeb 17, 1965
Priority dateFeb 17, 1965
Publication numberUS 3324594 A, US 3324594A, US-A-3324594, US3324594 A, US3324594A
InventorsHettinger Donald M, Martin Robert L
Original AssigneeWeatherproof Products Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Power apparatus for windows or the like
US 3324594 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

June 13, 167 D. M. HETTINGER ET AL 3,324,594

POWER APPARATUS FOR WINDOWS OR THE LIKE Filed Feb. 17, 1965 2 Sheets-$heet 1 102 aim V00 6 INVENTORS. Donald M. HefT/nger BY Robe/'1 L. Mari/l7 June 1967 0. M. HETTINGER ET AL POWER APPARATUS FOR WINDOWS OR THE LIKE 2 Sheets-Sheet 2 Filed Feb. 17, 1965 INVENTORS Donald M. Heff/hger' fiobe/"f L. Marf/n TOR/VEYS.

3,324,594 PQWER APPARATUS 1 R WINDOWS QR THE LHKE Donald M. Hettinger and Robert L. Martin, Kansas City,

Mo., assignors to The Weatherproof Products Corporation, Kansas City, Mo.. a corporation of Missouri Filed Feb. 17, 1965, Ser. N 433,416 6 Claims. (til. 49-43) This invention relates to power-operated windows and, more particularly, to apparatus for reciprocating window sash units in a vertical path.

It is the primary object of this invention to provide power apparatus for reciprocating window sash units, which apparatus includes a rack and pinion assembly coupled with a power source, the rack and pinion assembly being operably connected with a window sash unit whereby, upon actuation of the power source, the window sash may be reciprocated in a predetermined direction.

Yet another object of this invention is to provide improved drive mechanism for the rack and pinion assembly wherein safety cutoff means are employed to terminate reciprocating movement of the sash unit when the unit encounters resistance whereby to prevent structural damage or bodily injury.

Yet a further object is to provide a window having a power apparatus associated therewith for reciprocating the same, the rack and pinion assembly of the power apparatus being concealed in such a manner that the window has a finished appearance, notwithstanding the fact that the sash unit is operated by a power source coupled thereto through a rack and pinion assembly.

Other objects of this invention will become apparent as the following specification progresses, reference being had 30 to the accompanying drawings, wherein:

FIGURE 1 is a perspective view of a window having a sash operably coupled with rack and pinion structure pursuant to the teachings of. the instant invention;

FIG. 2 is an enlarged, fragmentary, side elevational view of the sash and rack and pinion structure illustrating the drive for the structure adjacent to the sash;

FIG. 3 is a cross-sectional view taken along line 33 of FIG. 2;

FIG. 4 is a cross-sectional view taken along line 44 of FIG. 2;

FIG. 5 is an end elevational view of the mounting structure for the prime mover which drives the rack and pinion structure;

FIG. 6 is a fragmentary, side elevational view of a sash guide coupled with the rack and pinion structure;

FIG. 7 is a perspective view of a slide element to which the rack of the rack and pinion structure is attached for sliding movement in the sash guide of FIG. 6; and

FIG. 8 is a cross-sectional view taken along line 8-8 55 of FIG. 6.

The present invention utilizes a rack and pinion assembly with the removable, normally vertical reciprocable sash of a window by providing a pair of spaced sash guides on opposed sides of the sash to define the path of travel thereof. One of the sash guides has a groove which shiftably receives the rack, the latter being secured to a slide element coupled to the last-mentioned sash guide for reciprocation therealong. A pinion in mesh with the rack is secured to a shaft extending laterally from the sash and in turn, interconnected with the drive shaft of a prime mover, such as a reversible electric motor or the like.

Means is provided to deactuate the prime mover when the pinion shaft is subjected to rotational resistance. in this respect, the prime mover is rockably mounted for rotation into and out of coupled relationship to stop 3,324,594 Patented June 13, 1967 means which is coupled with the prime mover to deactuate the same upon being engaged by the prime mover itself.

The other sash guide is yieldably mounted in place so that the sash is removable from the sash guides for cleaning, painting, or other purposes. In addition, counterbalance spring means are included with the other sash guide to facilitate operation of the sash.

A window 10, shown in FIG. 1, is mounted in an operative position through a wall 12 and has a pair of sashes 14 which are mounted in sash guides 16 and 118 for sliding movement with respect thereto. A box 20, having an access panel 22, is mounted in wall 12 adjacent to window 1i) and houses components of a drive assembly for rack and pinion structure 24 coupled to the lower sash 14 for reciprocating the latter in a manner hereinafter described. A 2-way electrical switch 26 on panel 22 permits operation of the drive assembly exteriorly of box 20. Alternatively, a 2-way switch 28 coupled to the drive assembly in box remotely thereof may be utilized for raising and lowering sash 14.

Each of the sash guides 16 and 18 has a pair of sashreceiving portions 30 and a groove 32 for each portion 30 respectively as shown in FIG. 3. Each groove 32 extends longitudinally throughout the length of the corresponding sash guide and has a pair of recesses 34 at the sides thereof which face each other.

Sash guide 16 is associated with one portion 36 of window frame 38, there being a blind stop 40 and a finish stop 42 secured to portion 36 in a manner to define a longitudinally extending recess 44 within which is disposed a spring 46 between guide 16 and the inner face of portion 36. Spring 46 biases guide 16 toward guide 18 and permits removal of sashes 14 from frame 38 for cleaning, painting, or other purposes.

The details of construction of spring 46 and the way in which it permits removal and installation of each sash 114 are set forth in U.S. Patent No. 3,135,014, issued June 2, 1964, and entitled Sash Balance Connector. This patent is incorporated herein by reference for a descrip tion of the constructional details of the means permitting the removal of each sash unit 14 from frame 38.

Each sash 14 has counterbalance spring means 48, as shown in FIG. 2, to facilitate reciprocation thereof with respect to sash guides 16 and 18. Spring means 43 is disclosed in the foregoing patent and the latter is incorporated herein by reference for a description of the details of construction of means 48. To couple spring mean-s 48 to the adjacent sash guide 16, a gripping member as disclosed in the aforesaid patent may be employed or an improved gripping member 49 of the type shown in FIG 2 may be utilized. If member 49 is used, an improved catch 51, carried by sash 14 is releasably coupled with member 49 to interconnect means 48 and sash 14.

An elongated slide element 50, coupled with sash guide 18, is movable with respect thereto in the corresponding groove 32. Element 50' is substantially transversely L- shaped (FIG. 8) and has longitudinally extending projections 52 which are slidably received within corresponding recesses 34. Laterally extending flanges 54 engage the faces 56 on opposed sides of groove 32 toprevent lateral movement of element relative to groove 32.

Element 50 is coupled to sash guide 18 from above or below prior to securing sash guide 18 to portion 58 of frame 38. Element 54 extends throughout a distance substantially equal to the height of the lower sash 14 and has a rack 60 of similar length secured thereto by a number of longitudinally spaced rivets 62 or other fastening devices. The base 64 of rack 60 is disposed directly adjacent to one section 66 of element 50, while the teeth 68 of rack 60 project toward the opposite recess 34. Rivets 62 extend through the other section 70 of element 50 and terminate at the side of rack adjacent to the inner face 72 of sash guide 18 defining the corresponding groove 32. Rack 60 is, therefore, rigid to and movable with element 50 relative to sash guide 18.

An extension 74 in the nature of a rigid strip or plate is also secured by means of rivet 62 to section of element 50 and extends beyond the proximal end thereof as illustrated in FIG. 2. Extension 74 is in juxtaposition with a similar extension 76 secured by wood screws 78 to the jamb 80 of lower sash 14. A knurled thumbscrew 82 threadably mounted in extension 74 interconnects the latter with extension 76 so that the upper end of sash 14 is secured to element 50. A rigid strip 84, having an angular projection 86, is secured by rivets 62 to the opposite end of element 50 and cooperates with a similar strip 88 having an angular projection which interlock-s with projection 86 in the manner shown in FIG. 2 when strip 88 is secured to the lower extremity of jamb 80 by wood screws 92.

To interconnect element 50 and the lower sash 14, projections 86 and 90 are initially moved into interlocked relationship and then thumbscrew 82 is threadably secured to extension 74. In this respect, the opening 94 in extension 76 which receives the shank of thumbscrew 82, is larger than the diameter of the shank to assure proper coupling of thumbscrew 82 with extension 74.

Sash guide 18 is provided with an aperture96 in the manner shown in FIGS. 2, 3, and 6, and a pinion 98 projects partially through aperture 96 and is disposed in mesh with rack 60 for reciprocating the latter when pinion 98 rotates in opposite directions.

Pinion 98 is secured to one end of a shaft 100 extending through a sleeve 102 and journalled therein by a pair of spaced bearings 104 as illustrated in FIG. 2. To accommodate shaft 100 and sleeve 102, portion 58 is provided with an opening 106 therethrough aligned with openings 108 and 110 in a pair of studs 112 adjacent the frame 38 and coupled with boxing 114 and wallboard 116. Shaft 100 is normally horizontally disposed and has a pulley 118 on the opposite end thereof coupled with an endless flexible V-belt 120 which, in turn, is coupled with a pulley 122 secured to the drive shaft 124 of a prime mover 126 spaced laterally from shaft 100. Shafts 100' and 124 are parallel, and pulleys 118 and 122 are in alignment with each other as illustrated in FIG. 2. Prime mover 126 is normally disposed below shaft 100 so that it may conveniently be located in box 20 between boxing 114 and wallboard 116 as shown in FIGS. 2 and 3. In this respect, box 20 has an opening 128 aligned with openings 106, 108 and 110 for receiving shaft 100 therein and is provided with flanges 134 secured by wood screws 129 or the like to one of the studs 112, another stud 130, and a pair of vertically spaced structural members 132 as shown in FIG. 2. Wallboard 116 is fitted over the flanges 134 of box 20 to conceal the same and provide a backing for panel 22 in the manner illustrated in FIG. 3.

Brackets 136 releasably connects .a plate-like support 138 to box 20 by bolts 140 as shown in FIG. 2. A platelike extension 142 is integral with support 138 adjacent one longitudinal edge thereof and extends laterally therefrom as illustrated in FIG. 3. A substantially U-shaped housing member 144 is secured by screws 146 to one face of extension 142 .and contains a pair of relays 148, a step-down transformer 150, and a portion of switch 26, such components forming a part of the electrical circuitry for actuating and deactuating the reversible electric motor 152 forming a part of prime mover 126. A manually actuated reset switch 154 is secured to the underside of memher 144 and is accessible through the open front of box 20 for placing the circuit of motor 152 in operation once again following a power failure or other malfunction.

A gear reducing device 156 having drive shaft 124 thereon, is operably coupled to the output shaft of motor 152 for rotating shaft 124 at a speed corresponding to a safe operating speed of the lower sash 14. Prime mover 126 is mounted on support 138 by means of a first plate 158 having vertically disposed slots 160 therein as shown in FIG. 4 for receiving bolts 162 threadably coupled with support 138. Plate 158 is shiftable relative to support 138 to permit adjustments in the tension of belt 120. When the desired tension is attained, bolts 162 secured plate 158 to support 138.

A second plate 164 is rockably mounted by means of a bolt 166 on first plate 158, bolt 166 being substantially coextensive with drive shaft 14 as illustrated in FIGS. 2 and 3. Coupling devices 168 interconnect plate 164 with device 156 so that prime mover 126 rocks with plate 164 relative to plate 158 about the axis defined by bolt 166. A slot 170 in support 138 clears bolt 166 during the ad justment of the tension of belt 120.

An L-shaped bracket 172 secured to one of the devices 168, carries a flat spring 174 which is shiftably received within a slot of a bar 176 secured to and extending laterally from the underside of housing member 144 as shown in FIGS. 2 and 3. Spring "174 biases prime mover 126 to its equilibrium position when prime mover 126 is rocked about the axis defined by bolt 166. As shown in FIG. 5, spring 174 is distorted under the influence of the counterclockwise rotation of plate 164 relative to plate 158.

A bracket 178 is carried by one of the devices 168 and has a segment 180 which mounts a pair of electrical limit switches 182 and 184 in the manner shown in FIG. 4. Each of the switches 182 and 184 is provided with a shiftable plunger 186 which normally bears against a respective stop 188 secured to plate 158. When prime mover 126 rotates in one direction, one of the switches 182 and 184 moves toward its stop, while the other switch moves away from its stop. Each of the last-mentioned switches is coupled in the electrical circuit of motor 152 to deactuate the latter after prime mover 126 has rocked through a predetermined arc. Conversely, when prime mover 126 rocks in the opposite direction, the other switch will move toward its stop and deactuate motor 152 after prime mover 126 has moved through a preselected arc. In this way, resistance to rotation of shaft 100, i.e., movement of rack 60, is sufficient to deactuate motor 152 to prevent strucutral damage to the components of window 10 and to prevent possible bodily injury to a person operating the same.

In operation, motor 152 is coupled with the various switches, relays 148 and transformer 150, so that actuation of switch 26 in one manner will cause the lower sash 14 to be raised, whereas actuation of switch 26 in the opposite manner is sufficient to cause lowering of the lastmentioned sash 14. Belt 120 will have been properly tensioned by adjusting plate 158 with respect to support 138 and limit switches 182 and 184 will be positioned with respect to their stops 188 so as to deactuate motor 152 for rocking movement of prime mover 126 through predetermined arcuate distances.

Upon actuation of motor 152 shaft 100 will rotate relative to frame 38 so that rack 60, element 50 and thereby lower sash 14, will be shifted relative to sash guides 16 and 18 in the corresponding direction. When sash 14 reaches either extremity of its path of travel, it will stop and thereby apply rotational resistance to shaft 100 which, in turn, will cause prime mover 126 to rock about the axis of bolt 166 by virtue of the position of the latter relative to drive shaft 124 due to flexible belt 120 frictionally engaging pulley 122. Prime mover 126 will continue to rock in the corresponding direction until the corresponding limit switch, carried on segment 180, is actuated in a manner to deactuate motor 152. In this way, no structural damage to the components for operating sash 14 Will be incurred and a portion of the body of an operator of window 10 will not be subjected to injury if the body portion is the cause of the resistance to rotation of shaft 100.

Lower sash 14 may be removed from sash guides 16 and 18 by removing thumbscrew 82 from coupled relationship with extension '74 and elevating sash 14 until projections 86 and 90 move out of interlocking relationship with each other. The sash is then shifted away from sash guide 28 to compress spring 46 until jamb 88' clears the corresponding portion of sash unit 18. Sash 14- is then swung in a direction to permit removal of the opposite jamb from the corresponding portion 30 of sash guide 16. The sash is also easily separated from spring means 48 during the process of removal from sash guides 16 and 18.

To install sash 14 in its operative position, the reverse procedure is followed wherein sash 14 is initially coupled with sash guide 16 and spring means 48 prior to being swung into coupled relationship with sash guide 18 and interconnected with element 50* by thumbscrew 82 and projections 86 and 90.

Rack and pinion structure 24 is substantially concealed at all times and for all operative positions of lower sash 14. Moreover, spring means 4-8 may be effectively concealed .in the manner set forth in the above-mentioned patent. As a result, window 10 Will have a finished, workmanlike appearance notwithstanding the fact that it is power-operated and has removable sashes.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

1. A window comprising:

a frame;

a pair of spaced sash guides carried by the frame;

a sash mounted on said sash guides for reciprocation relative to the frame;

a rack coupled with the sash for reciprocation therewith;

first means releasably connecting the rack with the sash,

said first means including a pair of interlocking projections, one of said projections being coupled to the rack, the other projection being coupled to the sash; second means releasably coupling the rack with the sash,

said second means including a pair of extensions secured to said rack and said sash respectively, and screw means releasably interconnecting said extensions;

a pinion rotatably mounted on said frame and coupled with said rack; and

means coupled with said pinion for rotating the same in opposed directions to reciprocate said rack and thereby said sash relative .to said frame.

2. A window as set forth in claim 1, wherein one of said sash guides is provided with a longitudinally extending recess, and wherein is provided an elongated slide element having a longitudinally extending projection shiftably disposed within said recess, said rack and the corresponding extension being secured to said element.

3. A window as set forth in claim 2, wherein said extension corresponding to said rack is adjacent to one end thereof, said one of said interlocking projections being on said element adjacent to the opposite end thereof, said other interlocking projection being on the sash.

4. A drive unit for reciprocating the movable sash of a window having a rack on the sash comprising:

a frame;

a driven shaft journalled on the frame for axial rotation;

a pinion secured to the shaft and adapted to mesh with said rack of said sash for reciprocating the latter when said driven shaft is rotated in opposed directions;

an actuatable reversible prime mover on the frame in spaced relationship to said driven shaft;

means mounting said prime mover on said frame for rocking movement about a horizontally disposed axis, said prime mover being normally disposed in an equilibrium location and being rockable away therefrom;

means normally biasing the prime mover towards said location, said means including a projection carried by the mounting means for the prime mover and having a slot therein and a spring strip secured to the prime mover and received within said slot;

means operably coupling said prime mover with said driven shaft to effect rotation of the latter upon selective actuation of the prime mover, said coupling means being disposed for rocking said prime mover relative to the frame when said driven shaft is subjected to a force resisting rotation thereof in either of said directions; and

means responsive to the rocking movement of said prime mover for deactuating the same.

5. A drive unit as set forth in claim 4, wherein said prime mover includes a drive shaft parallel to said driven shaft, said coupling means including a flexible belt and pulley assembly interconnecting said shafts.

6. A drive unit as set forth in claim 5, wherein said drive shaft is substantially coextensive with the axis of rocking movement of said prime mover.

References Cited UNITED STATES PATENTS 759,508 5/1904 Peder. 2,065,431 12/1936 Cotter 268-132 2,198,488 4/1940 Smith 268-132 X 2,238,537 4/1941 Miller 268-132 2,791,420 5/1957 Provost 268-124 3,135,014 6/1964 Martin 20-522 X DAVID J. WILLIAMOWSKY, Primary Examiner. HARRISON R. MOSELEY, Examiner. J. K. BELL, Assistant Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US759508 *Sep 19, 1903May 10, 1904Emanuel FederMechanism for actuating sliding window-sash.
US2065431 *Apr 14, 1936Dec 22, 1936Stone J & Co LtdSliding window
US2198488 *Jan 21, 1937Apr 23, 1940Gen Motors CorpElectrical apparatus
US2238537 *Jan 17, 1938Apr 15, 1941Lawrence O McbrideWindow operating mechanism
US2791420 *Jan 24, 1955May 7, 1957John R ProvostPower window operator
US3135014 *Jun 30, 1960Jun 2, 1964Weatherproof Products CorpSash balance connector
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3439727 *Oct 27, 1966Apr 22, 1969Tappan Co TheGarage door operator
US3469345 *Jun 21, 1968Sep 30, 1969Hanks FletcherDevice for opening and closing windows
US5144770 *Aug 21, 1990Sep 8, 1992Kenneth KrausWindow operator
US5605013 *Jan 17, 1995Feb 25, 1997Hogston; Timothy W.Programmable automatic window
US5787644 *Jan 27, 1997Aug 4, 1998Thomsen, Jr.; H. J.Power window mechanism
US6343436 *Oct 30, 2000Feb 5, 2002Seitz CorporationSliding sash drive assembly
US8166705 *Oct 26, 2009May 1, 2012Kabushiki Kaisha Toyota JidoshokkiSupport structure for vehicular resin window
US20040244295 *Jul 31, 2002Dec 9, 2004Mike DerhamSash windows
US20110225885 *Mar 20, 2010Sep 22, 2011Van Tassell Iii Ronald ESystem and device for opening and closing sliding doors
US20110232193 *Sep 29, 2011Kenneth William ThorneRF-remote control, retrofitted, self-contained, automatic window opener for casement windows or the like
WO2003012237A1 *Jul 31, 2002Feb 13, 2003Mighton Products LtdSash windows
Classifications
U.S. Classification49/28, 49/465, 49/362
International ClassificationE05F15/16
Cooperative ClassificationE05F15/16
European ClassificationE05F15/16