US3460289A

US3460289A - Awning type security window

Info

Publication number: US3460289A
Application number: US576735A
Authority: US
Inventors: Louis Toth
Original assignee: Anchor Enterprises Corp
Current assignee: Anchor Enterprises Corp
Priority date: 1966-09-01
Filing date: 1966-09-01
Publication date: 1969-08-12
Anticipated expiration: 1986-08-12

Description

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ATTORNEY United rates Fatent 3,460,289 AWNING TYPE SECURITY WINDOW Louis T th, Easton, Conn, assignor to Anchor Enterprises Corporation, Bridgeport, CODIL, a corporation of Connecticut Filed Sept. 1, 1966, Ser. No. 576,735 Int. 6!. Efifib /10 U.S. Cl. 4950 12 Claims ABSTRACT 0F THE DISCLQSURE A security window of the awning type in which the sash members are formed integrally with the security bars. The bars, in turn, are rotatably driven from both ends to open and close the window. Operation of the window is by means of a handwheel through a pair of fully rotatable cranks which prevent jamming of the window mechanism. The cranks are provided with a loading mechanism to create the impression of a mechanical stop at the window open and closed positions. The sash glass is mounted with its edges in narrow putty-filled channels to prevent removal of the putty.

In many modern penal institutions, the well-known vertically barred window openings have given way to awning window construction. An awning window comprises a plurality of rectangular sashes which are vertically stacked in the window opening, each sash extending across the width of the window. A pivot bar extends through the top of each sash. The sashes are pivoted simultaneously about these pivot bars so that, when the window is open, the sashes form a series of overhanging awnings which allow ventilation while providing protection against inclement weather.

In spite of their appearance, windows of this type do, in tact, provide a barred opening because the pivot bar enclosed within the top of each sash also serves as a detention bar. Furthermore, the height of individual sashes is limited to a maximum of approximately eight inches to prevent the exit of confined persons when the window is open. Prior art windows of this class are formed with two vertical side frame members, one enclosed in each window jamb. Each member is provided with a series of holes for supporting the ends of the round security bars which extend across the window opening. Each window sash is formed of extruded aluminum or structural steel shapes and the head member of each sash encloses one of the security bars. The connection between each sash and its corresponding security bar is provided by a short steel stub fastened to each end of the sash member, the ends of the stubs being welded to the security bar. To one end of each security bar, and within one of the window jambs, there is welded a short crank arm, the crank arms being parallel to one another when the sashes are in the same relative positions. The opposite end of each crank arm is loosely pinned to a vertical actuating bar. Vertical motion of the actuating bar rotates the security bars and causes the individual sashes to pivot between their open and closed positions. The usual method of moving the actuating bar upward and downward is by means of a bellcrank operated by a screw mechanism in the jamb driving a threaded trunnion nut. Sometimes an offset bell crank (a half shaft with a crank on each end), a screw mechanisrn, and trunnion nut are located in a special high stool. Glass is customarily installed in each of the sashes by having its upper edge inserted in a recess formed between the security bar and the edge of the sheet metal sash. The lower edge of the glass is then retained by means of the usual thick fillet of putty.

The prior art construction of awning type security windows presents a number of disadvantages. Since each sash is controlled from only one end, the opposite end can easily be sprungeither in attempting to escape or out of pure vandalism. Furthermore, the crank-operated screw mechanism must be installed either in a special high stool or in the side jamb. A high stool, of course, re duces the effective window area and the jamb installation presents clearance problems between the operating crank and the wall. It also permits a prying bar to be inserted between the wall and the crank handle. This latter disadvantage also brings up anotherthe window mechanism can be effectively jammed by continuing to force the crank after the window is either full open or closed.

Since the sash frame is formed of sheet metal and is secured to the security bar solely by means of short stubs at each end, it will be seen that the sash members themselves are somewhat weak and subject to destruction by vandalism. Also, if the building should sag, or if vandalism should cause misalignment at one end of the sashes, there is no way in which this defect can be easily adjusted. Furthermore, prior art window mechanisms are subject to excessive wear due to the changing and unbalanced load which they present to the window operating mechanism. For example, with the sashes in the closed position, little force is required to pivot them. However, as their centers of gravity move outward and become horizontally displaced from the center of rotation by greater amounts, the required operating force increases considerably. A still further disadvantage arising from the construction of the individual sash members is that the fillet of putty may be picked away from the lower edge of the glass and it is then relatively easy to remove the glass from the sash.

In security windows of this type, Weatherstripping has also been a problem. It can be put to dangerous uses when removed by inmates. Also, some sealing should remain even after the Weatherstripping is removed. Furthermore, it has not previously been possible to Weatherstrip windows employing rolled formed metal shapes. Prior art Weatherstripping was limited to aluminum extruded sash members only.

Accordingly, it is a primary object of the present invention to provide an improved awning type security window. Other objects are to provide such a window wherein pivoting of the sash members is simultaneously controlled from both ends; wherein the operating mechanism is more advantageously positioned; wherein the mechanism cannot be damaged by continued rotation after the window is in its full open or closed position; wherein misalignment of opposite ends of the sash members may be easily adjusted and equalized; wherein the sash is considerably stronger than prior art sash; wherein Wear due to unbalanced loading is substantially reduced; wherein weatherstripping may be applied to rolled formed metal shapes; wherein the glass is not readily removable from a sash member; and wherein the Weatherstripping cannot be removed intact.

The manner in which the foregoing objects are achieved will be more apparent from the following description, the appended claims and the figures of the attached drawings, wherein:

FIG. 1 illustrates a security Window in accordance with this invention positioned in a building wall;

FIG. 2 is an enlarged detail of a portion of the operating mechanism of the window of FIG. 1;

FIG. 3 is an enlarged cross section taken substantially along the line 33 of FIG. 1;

FIG. 4 is a cross section taken substantially along the line 44 of FIG. 3;

FIG. 5 is a cross section taken substantially along the line 55 of FIG. 3;

FIG. 6 is an enlarged cross section taken substantially along the line 6-6 of FIG. 1;

FIG 7 is a cross section taken substantially along the line 77 of FIG. 6;

FIG. 8 is an enlarged cross section taken substantially along the line 88 of FIG. 1;

FIG. 9 is a cross section taken substantially along the line 99 of FIG. 8;

FIG. 10 is a perspective view, partially broken away, of one sash member forming a part of this invention;

FIG. 11 is an enlarged cross section taken substantially along the line 1111 of FIG. 1;

FIG. 12 is a view similar to FIG. 11 showing the manner of installing the glass in a sash member;

FIG, 13 is an enlarged detail of the Weatherstrip installation;

FIG. 14 is a detail showing an alternative Weatherstrip installation;

FIG. 15 is a detail showing another alternative weatherstrip installation;

FIG. 16 is a detail showing another alternative weatherstrip installation;

FIG. 17 is a detail of the Weatherstrip employed in the FIG. 16 modification;

FIG. 18 is a modified form of loading mechanism usable in this invention;

FIG. 19 is another modified form of loading mechamsm;

FIG. 20 is another modified form of loading mechamsm;

FIG. 21 is a cross section through the mechanism of FIG. 20; and

FIG. 22 is another modified form of loading mechanism.

The objects of this invention are achieved by means of a security window which comprises first and second spaced side frame members which define aligned pivot openings therein. A plurality of substantially parallel security bars extend between the side frame members and through the pivot openings. First actuating means are provided adjacent the first side frame member to rotate the bars within the pivot openings, and second actuating means are provided adjacent the second side frame member to rotate the bars within the pivot openings. Operator means are provided for substantially simultaneously operating both the first and second actuating means to simultaneously rotate the security bars. A sash unit is associated with each of the security bars for rotation therewith whereby the window may be opened and closed by rotation of the sash units.

With reference to FIG. 1, there is illustrated a window 10 constructed in accordance with this invention mounted in the wall W of a security building. The window is of the awning type and includes a plurality of individually pivotable sash members 12 which are controlled by a hand wheel 14. The construction of the window operating mechanism is illustrated generally in FIG. 2 and more specifically in FIGS. 3-9. As seen from inside, the window comprises a left side frame member 16 and a right side frame member 18. The left and right side frame members are drilled to provide a series of aligned, equally vertically spaced pivot openings which support the ends of horizontally disposed security bars 20. As will be seen from FIG. 8, the extreme end of each of the security bars 20 extends through corresponding side frame member 16 (and 18) and through spacers 22. Welded to the left end of each security bar 20 is a crank arm 24a. A similar crank arm 24b (FIG. 9) is welded to the right end of each security bar. The crank arms along each side of the Window are parallel to one another and their unwelded ends are loosely pinned to a left actuating bar 26a and to a right actuating bar 26b. The connection between each actuating bar and its corresponding crank arm is made, as shown in FIG. 5, by means of a hearing insert 28 in the actuating bar and a pivot pin 30 mounted in the crank arm and extending through the bearing insert. The lowermost end of each of the

vertical actuating bars

26a, 26b extends beyond the lowest crank arm and carries a pivot pin 32 which extends through a bearing insert 34 in the end of a left drive rod 36a or a right drive rod 36b Secured to each of the

actuating bars

26a, 26b is a corresponding counterweight 27a, 27!). Each counterweight is in the form of a bar of rectangular cross section and is welded to spacer blocks 29 which provide clearance for the

crank arms

24a, 24b.

Turning now to FIGS. 3, 4 and 5, it will be noted that the lower end of the left side frame member 16 is welded to a channel member 38 which provides the structural base for the window sill. Mounted alongside, but spaced from, the lower end of the left side frame member 16 is a bar 49a. The left side frame member 16 and the bar 40a form a guide slot therebetween. Mounted between these members at the rear of the guide slot is a filler bar 4201. Mounted across the front of the guide slot, in recesses formed in the side frame member and the bar, is a bridge member 44a. Positioned within the guide slot is one leg 46a of an L-shaped shaft adjusting crank 48a. The shaft adjusting crank 48a is pivotally mounted on a pin 50 with the remaining leg 52a extending outwardly from the guide slot. The vertical leg 46a of the shaft adjustment crank is drilled and tapped to receive an Allen-head screw 54:: which extends though the leg and abuts against the filler bar 420. The bridge member 44a is also drilled and tapped to receive a set screw 56a which abuts against the leg 46a. The horizontally extending leg 52a of shaft adjustment crank 48a is provided with a bearing 58 which supports the outer end of a control shaft 60a. Mounted on the outermost end of the control shaft 60a is a crank 62a. The crank 62a is in the form of a disc with opposite sides cut away and is mounted in the same plane as actuating bar 26a. The crank carries a drive pin 64 which extends through a bearing 66 in the lower end of drive rod 36a.

It is to be understood that the elements which are designated by a numeral with the subscript a are duplicated at the opposite side of the window in reversed relationship. The similar elements on the right side of the window are given the same numerals with the subscript b. These elements are illustrated where feasible as, for example, in FIG. 2.

A detent assembly 68a is mounted on the horizontal leg 52a of the shaft adjustment crank 48a. The detent assembly includes a tubular body 70 threaded into an opening in the leg 52a; a detent pin 72 extending from the end of the tubular body and slidable therein; a coil spring 74 which urges the detent pin outward; and an adjustment slug 76 for varying the spring loading against the detent pin. The crank 62a defines a depresion 78 which is designed to receive the detent pin when the windows are in their closed position and a depression 78 for receiving the detent pin when the windows are in their full open position. The end of the pin and the sides of the depressions are tapered, allowing the pin to climb out of the depression after entering.

The right and left sides of the window operating mechanism are operatively joined at a central gear box 80. The gear box and its internal mechanism are best illustrated in FIGS. 6 and 7. From these figures, it will be noted that the gear box is secured to the channel member 38 by means of bolts that its top is closed by a cover 82, The sides of the gear box are apertured to contain sleeve bearings 84 which support a drive shaft 86 which extends outwardly from either side of the box. Mounted on the drive shaft 86 within the gear box is a pinion gear 88 which is secured to the shaft by means of a set screw 90. A boss 92 formed in the base of the gear box and a cooperating boss 94 on cover 82 support therebetween a stub shaft 96 upon which is mounted a Worm gear 98 which is rotatable with the stub shaft between a pair of

thrust bearings

100, 102. The upper end of the stub shaft extends outwardly from the cover 82 and upon it is mounted the hub 104 of the hand wheel 14. The hand wheel is provided with a hexagonal keyway 106 which extends axially therethrough. The lower end of the keyway engages the hexagonal end of the stub shaft 96 while the upper end is open.

The opposite ends of the drive shaft 86 are operatively connected to control

shafts

60a, 60b by means of universal couplings 108a, 1081). As illustrated in FIG. 7, each of these couplings comprises a sleeve 110 having an internal diameter larger than the external diameter of the two shafts which it connects. Opposite ends of the sleeve 110 are secured to the respective shafts by means of trunnion pins 112, 114 which extend through the shaft and through the sleeve at right angles to one another.

It will be understood that the mechanism so far described is enclosed within a suitable housing which may be constructed, for example, of stainless steel. This housing may include side jamb enclosures 116 and a stool enclosure 118. The hub 104 of hand wheel 14 is rotatably but non-removably mounted on the stool enclosure 118, as shown in FIG. 6. Hub 104 is provided with a small diameter portion 105 which defines a groove 107. The hub is positioned with groove 107 within a circular opening 119 in stool enclosure 118. In assembling to the removed stool enclosure, an upper bearing washer 109 is positioned on the shoulder formed by hub 104 at the small diameter portion 105 and the hub is positioned in opening 119. A lower bearing washer 111 is mounted against the inner surface of the stool enclosure and the assembly is held together by means of a retaining ring 113 which is positioned against the lower shoulder formed by groove 107 and small diameter portion 105. The retaining ring may be two semicircular rings welded toegther to form a single closed ring. By means of this construction, the handwheel-which could be used as a weapon-cannot be removed from the stool enclosure. However, when the stool enclosure is removed, the handwheel slips easily oif the end of stub shaft 96. The large diameter of opening 119 permits side play of the handwheel to center on the stubshaft upon reassembly.

Referring to FIGS. 3 and 4, it will be noted that the side jamb enclosure 116 is provided with a pair of

apertures

120, 122 which are aligned, respectively, with screws 54a, 56a. Similar apertures are provided in the opposite jamb housing in alignment with screws 54b, 5612, A closure plate 124 is mounted over these apertures by means of a screw 126.

The sash members 12, which form the movable portions of the present window, are similar in construction. This construction is illustrated in FIGS. l013. The ends of each sash are formed by rectangular end bars 128 which are recessed at their upper ends to engage the security bar and are welded thereto. The bottom portion of each sash member is formed by a reinforcing bar 130 which is welded at each end to one of the end bars 128. This forms a rigid, strong frame integral with the security bar 20. The upper edge of the sash member is formed by a rolled sheet steel head member 132 which has an outer lip 134 partially encircling the security bar 20 and an inner lip 136 spaced from the security bar 20 and forming a channel therewith. The inner lip 136 is bent back upon itself and extends upward beyond the edge of the sash. The lip is then bent inward and downward to form a dovetail groove 137. Mounted within groove 137 is a pliable Weatherstrip including a hollow body 139 having a dovetail cross section and a depending fin 141. This particular Weatherstrip is removable. However, in order to minimize the probability of inmates removing the entire strip, the body is slit at intervals, as at 143, so that the strip will break into small pieces upon attempted removal. In addition, the fin 141 may be grooved during manufacture, as at 141, to provide planes of weakness. The lower edge of each sash member is formed by a channel 138 which fits over the reinforcing bar 130 and includes a depending outer lip which is turned back upon itself to engage the head of the next lower sash as shown in FIG. 11. The inner edge of the channel 138 is bent to form a glass-enclosing groove 142 of rectangular cross section. The ends of the sash members are completed by trim strips 144. In addition to the sealing achieved by the Weatherstripping, it will be noted that metal to metal contact takes place, not only between the lip 140 and the next lower sash, but also between the inner lip 136 forming the dovetail groove and the next higher sash.

Alternative methods for installing Weatherstrippingin a nonremovable manner-are shown in FIGS. 14-17. FIG. 14, the head member of the sash is formed of two pieces of metal. An outer piece encircles security bar 20, extends rearwardly along the top of the sash, and then turns upwardly to form a support edge 152. The other piece is substantially L-shaped in cross section. One leg 154 is positioned against the lower surface of piece 150 and the other leg 156 extends downward parallel to bad 20. However, leg 156 is bent back upon itself and extends upward to a curved portion 158 which encloses, but is spaced from, edge 152. The Weatherstrip includes a flat strip body 160 which is positioned between edge 152 and curved position 158, as shown, before the sash pieces are joined. They are then spot welded, as at 162. The resilient fin 164 is then positioned to seal the window, and the Weatherstrip is nonremovably installed.

The modification shown in FIG. 15 is similar to that of FIG. 13. However, the hollow body 139 of the weatherstripping is not scored. Instead, an expanding polyurethane foam is injected into the body after the Weatherstripping is installed. Then both ends are plugged. As the foam expands, it is caused to compact to a high density. After curing, the resultant hard core 166 prevents the body 139 from being compressed sufficiently to be pulled from the dovetail groove 137.

In the modification of FIG. 16, the construction is similar to that of FIG. 14 except that the members forming the head of the sash define a groove 168 running the length of the sash and having a front opening 170. The Weatherstrip of FIG. 17 is installed in this groove. This Weatherstrip comprises a vinyl backing strip 172 which is perforated by slits 173. The individual sections thus formed are interconnected by a thin integral fin 174. Fibers forming a pile 176 are embedded in the backing strip. Any attempt to remove the Weatherstrip from groove 168 will cause the fin to tear and the backing strip 172 to break into its individual sections.

Glass is installed in the sash member as illustrated in FIGS. 11 and 12. As shown in FIG. 12, an initial bed of putty 146 is placed within the upper channel 132 and the lower groove 142. The upper edge of the glass pane 148 is then inserted into the channel 132 until the bottom edge of the glass will clear the channel 138. The lower edge of the glass is pushed back until it is positioned over the groove 142 and is then lowered into the previously prepared putty bed. Additional putty is then added to both the lower groove and the upper channel as shown in FIG. 11. Because of the narrow space existing between the glass pane 148 and the adjacent metal it is almost impossible to pick out the putty in which the glass is embedded. Furthermore, the obstruction to visibility is substantially reduced by eliminating the deep putty fillet which is normally required along the bottom edge of installed glass.

OPERATION The window of this invention is opened and closed by rotating the hand wheel 14. As the wheel is rotated, the worm gear 98 within the gear box 80 turns the pinion gear 88 and drive shaft 86. Drive shaft 86, in turn, rotates both

control shafts

60a, 60b and cranks 62a, 62b. Assuming that the individual sash members are in the closed position, drive pin 64 connecting each crank with its corresponding drive rod 36a, 36b is at approximately top dead center. Thus, rotation of the hand wheel in either direction will pull the drive rods and their associated

actuating bars

26a, 26b downward. This, in turn, pivots the left and right crank arms 24a, 2412 which rotate the security bars 20 and cause the individual sash members to pivot outwardly, opening the window. This construction is an important feature of this invention because it makes it impossible for an inmate to damage the operating mechanism by forcing the hand wheel past the full open or full closed position of the window. However, it is desirable that this feature not be made use of on each operation of the window. To avoid this, a loading device is included in the window mechanism for giving a false indication of a mechanical limit being reached at the closed and open positions. In the described embodiment, the loading device is in the form of

detent assemblies

68a, 68b. Upon reaching the full open position, as illustrated in FIGS. 35, the detent pin 72 engages the depression 78 in the crank 62a and 62b, indicating a limit to sash rotation, so that the normal reaction is to stop turning the hand wheel and reverse it to change the direction of sash movement. It will be understood that, although particular loading devices are illustrated and described for performing this function, it may also be achieved by other means known to the art including, but not limited to, hydraulic or air cylinders or compression means.

In the event of building sag, improper installation, or vandalism, the sash members may become misaligned at one end. For example, the sash members may be slightly open at one end and closed at the other. A misalignment of this type may be easily adjusted by means of the shaft adjustment crank 48a or 48b. For example, referring to FIGS. 3-5, if it is desired to open the sash members slightly more at the left end, the screw 126 and the closure plate 124 are removed. A screw driver may then be inserted through aperture 122 and set screw 56a backed oif from engagement with leg 46a of the shaft adjustment crank. An Allen head wrench having a. long shank may then be inserted through aperture 120 and screw 54a tightened down against the filler bar 42a. This rocks the shaft adjustment crank about its pin 50 into the illustrated dotted line position. This, in turn, lowers the crank 62a, the drive rod 36a, and the actuating bar 26a, thus pivoting each of the left crank arms 24a to force the left ends of the individual sash members into a slightly more open position.

As the opposite ends of the mechanism are individually adjustable, it is necessary to provide some type of universal coupling between the gear box 80 and the

control shafts

60a, 60b. In the present invention, this is achieved very simply and ingeniously by means of the

universal couplings

108a and 10% illustrated in FIG. 7. The sleeves 110 of these couplings have a greater internal diameter than the diameters of the two shafts which they interconnect. Furthermore, the trunnion pins 112, 114 are set at right angles to one another. Thus, a trunnion arrangement is provided which effectively absorbs any misalignment, while permitting the shaft to be rotated.

It will also be noted from FIG. 2 that, when the Window is closed, the

crank arms

24a, 24b are angled upwardly from their pivot points. The

counterweights

27a, 27b are selected to efiectively balance the outwardly moving sash members when the window is open. As the sash members pivot toward their open position, the counterweights describe an arc about the same center of rotation but with an increasing horizontal displacement from the pivot points. Thus, the moments created by the counterweights increase at the same time as, but in opposition to, the moments resulting from the outwardly moving sashes. This effectively balances the weight of the sash members and substantially reduces wear on the operating mechanism.

As has been explained, the hand wheel 14, which is shown in detail in FIG. 6, includes an open hexagonal keyway 106. This permits the windows to be operated 8 more rapidly by the insertion of a crank into the keyway. The crank, for example, may be carried by a guard who is thus enabled to make a rapid adjustment of the window opening.

In addition to the detent which has been described, other methods of applying a false loading indication on the operating mechanism may be employed. These are illustrated in FIGS. 18-22.

In FIG. 18, the crank 17 8a is circular and formed with diametrically positioned cam nodes 180. A cam rider bar 182 is pivoted at 184 and is held away from the circular portion of the crank by a stop pin 186. The outer end of the rider bar is connected to a dash pot 188. As each node arrives at the top of the crank 1781:, it lifts the rider bar against the force of the dash pot. A spring could also be substituted for the dash pot.

A somewhat similar arrangement is shown in FIG. 19. However, the crank defines diametrically positioned triangular notches 192 and the rider bar 194 carries a square detent bar 196 which engages the notches. A spring 189 forces the rider bar downward and causes the detent bar 196 to engage the notches 192.

In the embodiment of FIGS. 20 and 21, the crank 198 carries diametrically positioned inserts 200, each of which extends from both sides of the crank. These are engaged by a caliper-type brake including a first member 202 which carries a braking disc 204. A second member 206 carries a braking disc 208 and is mounted on the first member by a pivot 210. An arm 212 extends from the second member and the clearance between the two braking discs i adjusted by a screw 214.

The embodiment of FIG. 22 resembles a Prony brake in that a flexible brake band 216 encircles the top of the crank 218. However, the crank is elliptical or oval in shape so that maximum friction occurs when its long axis is vertical. The tension is adjustable by a nut 220 at one end of the brake band-the other end being anchored by a screw 221. tz-g What I claim as new and desire to secure by Letters Patent of the United States is:

1. A sash unit comprising: a substantially rectangular frame; a head member enclosing the top of said frame and defining a longitudinal glass-receiving upper channel therewith, said head member including an upwardly extending lip longitudinally therealong, said lip defining a dovetail groove positioned above said head member; a pliable Weatherstrip including a dovetail body portion enclosed within said groove and a weather sealing fin portion extending therefrom, said Weatherstrip being weakened at intervals along its length to prevent removal in one piece; and a base member enclosing the bottom of said frame and defining a longitudinal glass-receiving lower channel therewith.

2. A sash unit comprising: a substantially rectangular frame; a head member enclosing the top of said frame and defining a longitudinal glass-receiving upper channel therewith, said head member including an upwardly extending lip longitudinally therealong, said lip defining a dovetail groove positioned above said head member; and a pliable Weatherstrip including a. dovetail body portion enclosed within said groove and a weather sealing fin portion extending therefrom, the body portion of said Weatherstrip enclosing a substantially rigid central core preventing removal of said body portion from said groove.

3. A sash unit comprising: a substantially rectangular frame; a head member enclosing the top of said frame and defining a longitudinal glass-receiving upper channel therewith and including an upwardly extending lip longitudinally therealong, said lip defining a substantially rectangular groove positioned above said head member; and a pliable Weatherstrip comprising a flat body portion housed in said groove and slit at intervals along its length to form sections thereof, an easily tearable fin member integral with each of said sections and extending along the length of said body portion, and a fiber pile embedded in said body portion, enclosing said fin, and extending outwardly from said groove; and a base member enclosing the bottom of said frame and defining a longitudinal glassreceiving lower channel therewith.

4. A sash unit comprising: a substantially rectangular frame; a head member enclosing the top of said frame and defining a longitudinal glass-receiving upper channel therewith, said head member being of two piece construction, one piece forming an upstanding Weatherstrip support edge, the other piece being secured thereto and including a longitudinal clamp member of substantially U-shaped cross section enclosing said support edge, and a pliable Weatherstrip including a body portion curved over said support edge within said clamp member and gripped therebetween; and a base member enclosing the bottom of said frame and defining a longitudinal glass-receiving lower channel therewith.

5. A security window which comprises: first and second spaced side frame members defining aligned pivot openings therein; a plurality of substantially parallel security bars extending between said side frame members and through said pivot openings; first actuating means adjacent said first side frame member for rotating said bars within said pivot openings; second actuating means adjacent said second side frame member for rotating said bars within said pivot openings; first and second manually actuated fully rotatable crank means connected to reciprocate said actuating means to simultaneously operate both of said first and second actuating means to simultaneously rotate said security bars; a sash unit associated with each of said security bars for rotation therewith, whereby said window is opened and closed by rotation of said sash units; and loading means for artificially loading said crank means at the window closed and full open positions.

6. The window of claim wherein each of said crank means is substantially disc-shaped and wherein said loading means comprises: friction disc means extending from opposite surfaces of said crank means on opposite sides of its center of rotation; and caliper-type brake means positioned to frictionally engage said friction disc means in the window closed and full open position.

7. The window of claim 5 wherein said crank means is oval and said loading means comprises: a flexible brake band partially encircling the edge of said crank means to tightly engage a small end of said crank means in the window closed and full open position.

8. The window of claim 5 wherein said loading means comprises detent means associated with said crank means.

9. The window of claim 8 wherein said detent means comprises: first and second depressions defined by said crank means on opposite sides of its center of rotation; and a resiliently loaded detent selectively engageable with said depressions.

1G. The window of claim 8 wherein said detent means comprises: camming nodes on opposite sides of the center of rotation of said crank means; and a resiliently loaded cam rider engageable by said nodes.

11. A security window which comprises: first and second spaced side frame members defining aligned pivot openings therein; a plurality of substantially parallel security bars extending between said side frame members and through said pivot openings; first actuating means adjacent said first side frame member for rotating said bars within said pivot openings; second actuating means adjacent said second side frame member for rotating said bars within said pivot openings; first and second fully rotatable crank means connected to reciprocate said actuating means; handwheel means positioned between said first and second crank means; first and second control shafts operatively connecting said handwheel means to said first and second crank means, respectively; shaft adjustment means supporting each of said first and second conrol shafts, selectively adjustable to move said shaft toward or away from its corresponding actuating means; and a sash unit associated with each of said security bars for rotation therewith, whereby said window is opened and closed by rotation of said sash units.

12. A security window which comprises: first and second spaced side frame members defining aligned pivot openings therein; a plurality of substantially parallel security bars extending between said side frame members and through said pivot openings; first actuating means adjacent said first side frame member for rotating said bars within said pivot openings; second actuating means adjacent said second side frame member for rotating said bars within said pivot openings; first and second fully rotatable crank means connected to reciprocate said actuating means; first and second control shafts operatively connected to said first and second crank means, respectively; a pinion gear connected to said first and second control shafts; a worm gear meshed with said pinion gear; a stool housing enclosing said pinion gear, worm gear, and control shafts and defining an opening therein; a handwheel rotatably mounted in said opening and detachable from said worm gear but nondetachable from said stool housing; and a sash unit associated with each of said security bars for rotation therewith, whereby said window is opened and closed by rotation of said sash units.

References Cited UNITED STATES PATENTS 2,355,412 8/1944 Bird 4989 X 2,430,970 11/1947 Albrecht 4983 X 2,945,267 7/1960 Tracy 49-85 X 3,113,355 12/1963 Tracy et a1. 49-50 3,198,298 8/1965 Ferris 4991 3,257,755 6/1966 Lewis 49--85 DAVID J. WILLIAMOWSKY, Primary Examiner P. C. KANNAN, Assistant Examiner US. Cl. X.R.