US2077105A - Sash fastener - Google Patents

Description

c. o. GOSERUD April 13, 1937.

SASH FAS TENER 2 Sheets-Sheet 1 Filed Dec. 6, 1930 April 13, 1937. c. o. GOS ERUD SASH FASTENER Filed Dec. 6, 1950 2 Sheets-Sheet 2 Patented Apr. 13, 1937 UNITED STATES PATENT OFFICE 24 Claims.

My invention relates to sash fasteners and particularly to fasteners adapted to be used in conjunction with swinging sash, and has for an object to provide a sash fastener by means of which the sash may be rigidly held in any adjusted position.

Another object of the invention resides in pro viding a sash fastener whereby rattling of the sash is prevented when the sash is in open or partly open position.

A still further object of the invention resides in providing a sash fastener which may be quickly and easily detached from or attached to the window frame whenever desired.

My improved sash fastener is of the type consisting of apair of arms, one of said arms being pivoted to the sash and the other to the window frame, and being provided with a friction joint between said arms adapted to hold the windowin any of its adjusted positions, said friction joint having ears issuing outwardly from' said arms and overlying one another and a friction washer therebetween, and a bolt extending through both of said ears and through said washer for clamping said parts together.

A feature of the invention resides in providing a strap issuing outwardly from the ear against which the nut of said bolt abuts and overlying the other ear, and in providing a shoulder on said strap adapted to be engaged by the head of the bolt for holding the bolt from rotation.

An object of the invention resides in disposing said strap so as to form a stop for limiting the movement of said arms relative to one another.

Another object of the invention resides in providing the ear on the arm having the bolt head in engagement therewith, with a cam adapted to engage said strap for shifting the arms relative to one another so as to permit of the further swinging of the arms by the application of pressure directly to the arms, and to further construct said ear with a slotted hole for the recep- 7 tion of said bolt to guide the bars in such sliding movement.

A still further object resides in providing a mounting on thewindow framehavingan opening therein and in constructing a head on the arm 50 adapted to be attached to the window frame together with a trunnion issuing outwardly there-' from and adapted to be detachably mounted in. said opening.

A feature. of the invention resides in forming- 55 on said mounting a keeper adapted to engage said head to retain the arm. pivotally connected with said mounting and in further forming said head with a notch corresponding in configuration to said keeper to permit of the removal of 60 the arm from the mounting when the arm is swung to bring the notch into register with the keeper.

Another object of the invention resides in pivoting said arms to the sash and to the window frame at the same distance from the pivot of the sash so that the arms may swing into overlying position when the sash is closed and to be thereafter swung jointly from one position to another.

A still further object of the invention resides in providing a sash fastener by means of which the sash may be automatically latched in closed position upon swinging of said arms jointly from one position to the other.

Another object of the invention resides in'providing a sash fastener in which the sash may be drawn into closed position upon the swinging of said arms jointly from one position to the other.

A feature of the invention resides in providing a lug on one of the armsadapted to engage. the other arm for causing the'simultaneous-movement of the arms when the arms are swung jointly;

An object of the invention resides in disposing said lug on the receding edge of one of the arms so as to engage the approaching edge of the other arm tocause the joint movement of the arms.

Another object of the invention resides in placing said lug upon the, arm pivoted to the window frame.

A still furtherobject of the invention resides in attaching a bracket to the sash to which one of the arms ispivoted and to form said bracket with stops extending outwardly therefrom and adapted to engage the arms to limit the movement thereof and prevent injury to the sash by engagement of the arms with the sash proper.

A feature of the invention resides in forming one of the arms offset between the friction joint and the pivoted end thereof so as to permit of the arms moving toward and from each otherto compensate for shrinkage and expansion of the sash relative to theframe.

Other objects of the invention reside in the novel combination and arrangement of parts and in the details of construction hereinafter illustrated and described.

In the drawings:

Fig. I is a perspective view of a window frame andsash illustrating an embodiment of my invention applied thereto.

Fig. 2 is a fragmentary elevational view of the window and sash shown in Fig. I viewed from the interior of the window and illustrating the sash in closed position.

Fig. 3 is a sectional .view taken on line 3-301? Fig. 2.

Fig. 4 is a view similar to Fig. 3 illustrating the arms in altered position.

Fig. is a View similar to Figs. 3 and 4 showing the arms in latched position.

Figs. 6 and '7 are elevational views of a portion of the window frame and the sash fastener mounting illustrating the method of applying the sash fastener arm thereto.

Fig. 8 is a plan sectional view taken on line 8-8 of Fig. '7.

Fig. 9 is a perspective view of the arm pivoted to the sash and detached from the other arm and from the sash together with the supporting bracket therefor.

Fig. 10 is a perspective view of the sash fastener detached from the sash and window frame illustrating the arms in overlying position.

Fig. 11 is an enlarged longitudinal sectional view taken on line I II I of Fig. 4.

Fig. 12 is an elevational sectional view taken on line I2I2- of Fig. 11. V

Fig. 13 is an elevational view of the sash fastener with the arms in alignment and with the bolt head and bolt head locking device cut away.

For the purpose of illustrating the application of my invention, I have shown in Fig. 1 a window indicated in its entirety at I6 which comprises a window frame II arranged with stops I2 and I3 to slidably support the usual window sash I4 and I5. In conjunction with the frame II a storm window I 6 is illustrated which is constructed with stiles I! and I8 connected together through rails I9, and 2| and supporting the window panes in the usual manner. The storm window I6 is hingedly connected to the header 22v of the frame II through sash hangers 23 and 24 in the usual manner so as to permit of swinging of the sash outwardly as shown in Fig. 1 or to permit the same to be swung into the rabbet adjacent the stop I3 formed in the frame II and indicated at 25. For the purpose of readily manipulating the storm sash, the lower rail I9 may be provided with a pull, not shown, whereby the sash may be opened 01 closed in the usual manner.

My invention preferably embodies twosash fasteners 26 and 27 which are attached to the two stiles I7 and I8 of the storm window and to the stops I3 of frame II. Both of these devices are identical in construction except that the one is left handed and the other right handed and for this reason only the sash fastener 26 will be described in detail.

The sash fastener 26 as best shown in Fig. 10 consists of two arms 28 and 29 of equal lengths which are hingedly connected together at one end through a friction joint 41 and pivoted at their opposite ends to the frame II in sash I6 equal distances from the hangers 23 and 24 in a manner to be presently described in detail. When the sash is closed these arms swing downwardly from their position shown in Fig. l to that shown in Fig. 3 so that the two arms 28 and 29 overlie one another, after which the said arms may be swung jointly from the position shown in Fig. 3 through the position shown in Fig. 4 and to the position shown in Fig. 5. When disposed as shown in Fig. 5, the sash is locked by construction which will be presently described in detail. When the arms are disposed as illustrated in Fig. 1, the window is held in outwardly adjusted position by the friction joint 41 between the two arms which will now be described in detail.

At the jointed end of the arm 28 is formed a substantially circular ear-30 which is provided with an elongated slot 3| extending therethrough. Similarly the jointed end of the arm 29 is constructed with an car 32 which. however. has a circular opening 33 extending through it. In the assembly of the device, the ears 30 and 32 are disposed in overlying relation and between them is placed a washer 3! preferably of fiber or some other suitable friction material whereby friction may be produced between the two ears 30 and 32 without causing unnecessary wear in the parts as said parts are moved relative to one another. A bolt 34 threaded at one end as indicated at 35 and formed with a head 36 at the other end is adapted to extend through the slot 3| in the ear 30, through the washer 31, and through the hole 33 in the ear 32. A nut 38 screwed upon the threaded end 35 of this bolt serves to clamp the parts together and to bring the ears into frictional engagement with the washer 31 to yieldingly resist the swinging of the arms 28 and 29 relative to one another. In order to procure a uniform pressure upon the washer 31 and particularly the outer portion thereof, the ear 32 is preferably cupped as indicated at 39 in Fig. 11 so that when the nut 38 is tightened, pressure is more uniformly distributed over the outer portion of the ears and washer. In this manner a more uniform friction can be procured and the desired friction secured without unnecessary tightening the nut 38.

In order to hold the bolt 36 from rotation, I employ a strap 48 integrally constructed with respect to the ear 32 which is bent outwardly therefrom at the periphery thereof and which isformedwith a portion 49 overlying the car 36. This portion terminates in a member 50 which is constructed with an opening 5| of such dimensions as to snugly receive the head 36 of the bolt 34. With this construction, it will readily be comprehended that the head of the bolt is held from movement through a part integral with the car 32 against which the nut 38 abuts. Due to this construction, there is no moving part, which would tend to unloosen the bolt and nut relative to one another sothat the same remain at all times in locked position. The nut 38 may hence be tightened and loosened and the friction in the joint 41 varied to meet with the particular requirements without danger of the degree of friction being varied or the nut unloosened in the operation of the device.

For the purpose of attaching the arm 29 to the stile I3 of the storm window I6, I employ a bracket which is indicated in its entirety at 46. This bracket is preferably bent from a piece of sheet metal and is formed with a base 4! and with a flange 42 extending outwardly therefrom. The base 4I may be secured to the stile I8 of the storm window I6 by means of Wood screws I4I so that the flange 42 extends inwardly toward the sash I4 and I5. The extreme end of the arm 29 is formed with a head 43 which is pivotally connected to the flange 42 through a rivet 44. By means of this construction the arm 29 is pivotally mounted upon the bracket so that the same may be swung from the position shown in Fig. 3 to that shown in Fig. 5.

For limiting the swinging movement of the arm 29, the bracket 40 has two stops 45 and 46 bent outwardly therefrom and disposed in the path of movement of the arm 29 which stops limit the movement of said arm so that the friction joint 4! of the sash fastener 28 will be held from engagement with the sash proper in either of its extreme positions so as to prevent the device marring the sash, when swinging from one position to the other.

The arm 28 is pivotally connected to the frame II of the window through a mounting plate 52.

This mounting plate'ispreferably constructed; of. sheet metal, the same as the bracket 40 and, is formed with foot portions 53 and 5.4 at the ends thereof. and with a body portion offset from thefoot portions 53'and 54. This mounting. plate is preferably of a width not to exceed the width of the stop l3 and is secured thereto through screws 56 which extend throughthe foot portions 53 and 54. At the center of the body portion 55 is formed a circular opening 51 which provides a bearing for the arm 28. The arm 281s constructed at the end thereof opposite the friction joint 41 with a circular head. 58 best shown in shown in Fig. 8, so that the same may be readily inserted into the opening 5-! when it is desired to attach the sash fastener to the window frame.

For the purpose of retaining the head 58; pivoted to the mounting plate 52, a. keeper 6.! is employed which is best shown in-Figs. 6, '7 and 8. This keeper is constructed byv bending over a portion of the metal of the body 55 of the plate 52 to provide a finger adapted to overlie the head 58. As the arm 28 swings about its pivot formed through the trunnion 59, the finger 52 engages the outer surface of the head 58 and holds the parts attached to one another. In order that arm 28 be capable-of being detached from the mounting plate 52-, the head 58 is constructed with a notch which conforms inv con.- figurationto the finger 62 of thekeeper 51. When the arm 28 is swung. as illustrated in Fig. 6 so thatthe notch 53- registers with the finger 62, the arm may be moved longitudinally along with the axis of the stud 59 and withdrawn from engagement with themounting plate 52. However, as soon as: the arm 28 is swung as indicated in Fig. 7, the keeper 5i comes into engagement with the head 58 of said arm depriving the same from longitudinal movement and holding the arm pivotally attached to the mounting proper.

In the installation of the device the arms 28 and 29 are shifted so that the bolt 34 comes into the far end of the slot 3! as indicated Fig. 12. The arms 28 and 29 are of such a length that when the parts are so arranged the axis of the trunnion 59 lies in alignment with the axis of the rivet 44 when the arms are folded as shown in Fig. 10. The storm sash is next closed and the hanger attached to the stile of the sash through the screws MI as previously brought out.

care being taken to attach the hangers a distance above the window sill greater than the length of the arms 28 and 29 so that said arms may swing freely from closing to latched position and vice versa when the-sash is closed. The arm 28 is next applied to the mounting plate 52 and while the sash is still in closed position, said mounting plate is screwed to the stop 13 through the screws 56. When so disposed, the axes of the pivots whereby the sash fastener is secured to the sash and frame are exactly the same distance from the axes of the sash hangers 23 and 24 and coincide with one another when the sash is closed. With the parts so arranged, it, can

readily'becomprehended that the.- two arms 28. and 29 may be swung jointly through the positions illustrated'in Figs. 3, land 5. By means, of the swingi-ngofrthe arms jointly as shown, I am able to latch the window in place and. to draw the same tightly into the rabbet 25. This is accomplished as follows:

Upon the lowermost edge of the arm 28: is formed an outwardly extending lug 64 which is preferably integrally connected thereto. This lug is adapted;to engage the edge 66' of the cooperating arm 29 so as to cause said arm to move in-unison with the arm 28 when the sash fastener is moved bodily as shown in Figs. 3, 4 and 5. If the distance between therivet 44 and the surface of the stile [8 be just a trifle less than the distance between the pivot 59 and the facing surface EFI of the stop iii, the arm 28 through the action of the lug 64' draws the arm 29' inwardly and at the samev time forces the sash I6 into closed position within the rabbet 25. When the fastener passes the position shown in Fig. 4 to that illustrated in Fig. 5, the arm 29' exerts a pressure upon the lug 64 which tends to swing. the arm; 28' in. the direction inwardly from the storm. sash, which is the direction of movement, of said-- arms in forcing the window into closedv position. It will hence be readily comprehended that the pressure, exerted through arm 29. on the arm 28 besides tending to: close the sash also serves; to holdthe sash fastener in latched position. It is hence merely necessary in the closing-of? thesash to bring the sash into closed position as shown in Fig. 3 and tograsp the fas-' tenerthrough. the joint 47 thereof. and to; swing the samefrom its position shown. in Fig.3 to that shown in Fig. 5.- The sash is then firmly forced into closing position; and the sash fastener held latched and prevented from dropping back to the position shown in. Fig. 3. No special. latching devices are hence required.

In order to prevent the arm 28 ofv the sash fastener from becoming unintentionally disengaged from the mounting plate 52 and to maintain. the arms 28. and 29. always in broken position so that the sash may be opened or closed by merely pulling on-the sash pull, I employ a camv member 68 which. is formed on the car 30 and which is adaptedto engage the strap 48.to cause the termination. of the swinging of the arms when the same occupy the position shown in Fig. 1. The notch 63- in head 58 previously referred to is so disposed that when: the arms are in brokenposition, the finger 52 is out of. register therewith so that swinging of the; arm 28' throughout the entire path of movementnecessary to open: and close the window and to, latch the same will not bring the finger 62 into register with said notch. In this manner the head His at alltimes during the normal use of the device maintainedattached to the mounting plate 52. The cam 68which is best shown in Fig. 12 is, however, so constructed that upon applying direct pressure to. the underside of the joint 4-! andlifting thesame bodily upwardly, said cam coacts with the. strap 43: to shift the ear. 3i1=bodily with respect to-thebolt 34 and along theslot 3| thereof. Such slidingof the parts is resisted through the friction affordedby the bolt 34and the friction washer 3! which prevents the parts from being so moved by the manipulation of the window proper. During the sliding. of. the parts occasioned through the camv 68, the arms 28 and 29 also swing relative to one another, beyond the; angle of movement possible inthe swinging; of said arms through: theopening and closing of the storm sash. Such swinging continues until the arms are in alignment and the bolt 34 is at the other end of the slot 3|. The strap 48 then engages the arm 28 and terminates the further movement of the parts. When the parts are in alignment as illustrated in Fig. 13, the notch 63 registers with the finger 62 of the keeper BI and the arm 28 may be disengaged from the mounting plate 52 by moving the same axially along the trunnion 59. It can hence be readily comprehended that when it is desired to remove the storm sash or disconnect the same from the window that the sash fastener may be readily disconnected from its mounting plate as described and the sash removed from its hanger and the frame on which the same is hung.

Upon applying the fastener to the mounting plate 52, the arms 28 and 29 are brought into alignment as shown in Fig. 13 and the trunnion 59 inserted into the opening 58. The arms are then broken by swinging the same downwardly and upon the closing of the sash through the pull attached thereto the arms swing in the manner heretofore described. It is to be noted, however, that as the arms approach the positions shown in Fig. 3 the same are automatically slid relative to one another to move the bolt 34 to the far end of the slot 3| as shown in Fig. 12 so that the pivots of the arms of the sash fastener come into alignment with one another. When the window has been once closed, the parts are hence again positioned in a manner to prevent the same from being disengaged from the mounting plates 52.

In the use of my invention with the ordinary wood window frame and sash shrinkage and expansion of the storm sash relative to the frame frequently occurs which causes the point of attachment of the arm 28 of the sash to vary with respect to the point of attachment to the frame. To compensate for such shrinkage and expansion one or both of the arms 28 and 29 may be formed with an offset 10 to allow the ends of said arms opposite the friction joint thereof to move toward and from one another. Such construction as best shown in Fig. 2 allows sufficient lateral movement to prevent binding of the parts in the closing of the sash in the event that the sash becomes swollen or expanded in any manner.

My invention is highly advantageous. The sash fastener can be constructed solely from metal stampings and at an extremely low cost. The sash is held in any adjusted position through friction. Play and rattle are completely eliminated. The sash may be sufficiently rigidly supported in such adjusted position to prevent movement thereof through winds of ordinary velocity. In opening and closing the sash, it is merely necessary to move the sash in the usual manner through the pull attached thereto, the device functioning automatically during such movement of the sash. The sash may be rapidly closed which is frequently highly advantageous where wind and snow are blowing into the room through the window with which the device is used. After the sash has been closed, the same is held to a certain degree in closed position through the friction joint of the invention and if it is not desired to positively latch the sash from movement, the inner sash of the window may be closed without interference. If it be desired to latch the storm sash, the same may be done by merely swinging the two sash fasteners upwardly as previously brought out, after which the inner sash may be closed in the usual manner. when closing storm sash, equipped with my improved sash fasteners, the inner window need only be opened an amount sufficient to permit of the insertion of the hand therethrough for engagement with the pull on the storm sash. In the detachment of the device from the window for the purpose of removing the storm sash and applying screens to the window the device is easily detached and the same removed without removal of any of the parts thereof so that there is nothing to be lost in such detachment. The mounting plate secured to the window frame stop is quite inconspicuous and offers no interference to the application of screens to the window frame. There are no parts which have to be sprung in the operation of the invention either in the forcing of the window into closing position or the latching of the window so that the device will operate indefinitely without getting out of order. Where snow or ice occurs between the sash and frame, the parts are caused to slide along the slot 3! so that no injury is done to the hanger or to the sash in the operation thereof. This construction also compensates for swelling of the sash and permits of less accurate installation.

Changes in the specific form of my invention as herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

Having described my invention, what I claim as new and desire to protect by Letters Patent 1s:-

1. A sash fastener comprising a pair of arms, overlying ears formed on said arms, a friction washer disposed between said ears, a bolt extending through said ears and washer, a nut on said bolt engaging one of said ears for bringing said ears into frictional engagement with said washer, a member issuing outwardly from said last named ear, and means for holding the head of said bolt from rotation, said means being held immovable through said member.

2. A sash fastener comprising a pair of arms, overlying ears formed on said arms, a friction washer disposed between said ears, a bolt extending through said ears and washer, a nut on said bolt engaging one of said ears for bringing said ears into frictional engagement with said Washer, a strap issuing outwardly from said last named ear, and means on said strap for engagement washer disposed between said ears, a bolt extending through said ears and Washer, a nut on said bolt engaging one of said ears for bringing. said ears into frictional engagement with said washer, a strap issuing outwardly from said last named ear and having a portion overlying the other ear, and a shoulder on said strap for engagement with the head of the bolt to hold the bolt from rotation.

4. A sash fastener comprising a pair of arms, overlying ears formed on said arms, a friction washer disposed between said ears, a bolt extending through said ears and washer, a nut on said bolt engaging one of said ears for bringing said ears into frictional engagement with said washer, a strap issuing outwardly from said last named ear, means on said strap for engagement with the head of said bolt to hold said bolt fro-m rotation, said strap being positioned obliquely with respect to its arm, topresent a portion thereof for engagement with the other arm to terminate the opening movement of said armspriOr-to-thearms coming into alignment.

5. A sash fastener comprising a pairof arms, a friction joint pivotally connecting said arms, said arms beingslidable-relative to one another along said joint, a cam on oneof said arms, andmeans on the other of said arms adapted to engage said cam for sliding said arms relative to one another upon movementof said cam relative thereto.

6. A sash fastener comprisinga pair ofjointed arms having anumber of pivots, means forming a stop at one of "said pivots for limiting'theswinging of said arms, and friction meansat saidpivot acting in conjunction with said stop and-yieldable to the further swinging of said arms upon the functioning of said stop.

7. A sash fastener comp-rising a pair of jointed arms having a number of pivots swingable-in a given path, a stop at one of said pivots for limiting the swinging of said arms in said path, means at said pivot cooperating with said stop for altering the path of movement of said arms upon further swinging of saidarms and friction means yieldingly resisting the movement of said arms along the altered path.

8. In combination with a sash frame and sash pivoted thereto, a sash fastener: comprising a pair of jointed arms, one of said arms being pivoted to the sash and the other to the frame at substantially equal distances from. the pivot of the sash, said arms being folclable into a certain overlying position upon closure of the sash and beins jointly movable about their respective pivots from said position to a second position, a bracket on said sash to which oneof said-arms are pivoted, and stops on said bracket for engagement with the arm. pivoted to said sash to terminate the joint movement of. said arms when swung toward the sash.

9. In combination with a sash frame and sash pivoted thereto, a sash fastener comprising a-pair of jointed arms, one ofIsaidiarms being pivoted to the sash andthe other'to the frame at substantially equal distances from the pivot of the sash, said arms being foldable intoa certain. overlying position upon closure of. the sash, a lug on one of said arms for engagementiwith' the other to cause said arms to move in: unisoniwhen the sash is in closed position, said lug holding. the sash latched when the arms are disposed. in one position, and means for slidably connecting said arms together at the joint thereof to reduce the .stresses on said arms occasioned by irregular installation or the presence of foreign. matter between the sash and frame.

10. A sash fastener comprising apair of jointed arms, a head formed on one of said. arms, a mounting, one thereof having a trunnion. extending outwardly therefromand the other having a bearing for journalling said trunnion, said arm being slidable along the axis of said trunnion for disengagementfrom said mounting and a keeper, extending outwardly from said mounting in proximity to the periphery of said: head, said. keeper having a finger adapted to overlie said. head at the periphery thereof to retainthe trune nion within said bearing.

ii. In combination with a sash frame and. a sash pivoted thereto,.a sash. fastener comprising a pair of jointed arms, one of said arms being pivoted to the sash and: the; other to the frame at substantially equal distances from the pivot of the sash, said arms being substantially of the same length and being foldable into an overlying position upon closure of the sash and means at one'of the pivots'of said armsforguiding said arms-for'longitudinal movement with respect to one another to compensate for irregularities in the attachment ofthe arms to. the sash and sash frame.

l25 A sash fastener forapplioation toa swinging sash and the frame. therefor comprising a p of jointed m a a ed n n po it n. to overlie the inner face of. one of the vertical b r f h am a d nan her PQ ifiQ to extend outwardlyjfrom' said member of the frame, the inner of said arms being. formed with a flat head parallel: with the inner surface of said member of the frame, a mounting on the frame having a flat surface underlying the head of sa darm a r nni on on th e i'io rnal d i 't e t ra dex endi a i h ansle'st e inner. face of said member of the frame, said arm being movable laterall in the direction of the axis of said trunnion to permit of disengagee ment therewith and a keeper on said' mounting for engagement with saidhead to restrain move-. ment of said arm along the axis of saidtrunnion.

13. A sash fastener comprising a pair. of arms, overlying ears. formed .on said arms, a friction washer disposed between saidears, a bolt extende ing through said ears and washer, a nut on said bolt engaging one of said ears for bringing said ears into frictional'engagement with said washer, a strap bent from the metal of said last named ear and having a portion overlying the other car, and a shoulder on said strap for engagement'with the head of. the bolt to hold the bQlt from rotation.

14. A sash fastener for ap lication toa swing; ing sash and the frame therefor comprising a pair of jointed arms adapted in one position to overlie the inner face of one of thevertical members of the frame and inanother position to extend outwardly from said member of the frame, the inner of said arms being formed with a flat headparallel with the inner surface of said member of the frame, a mounting on the frame having a flat surface underlying the head of said arm, a trunnion on one thereof journaled in the other and extending at right angles to the inner face, of said m m e the frame, a drm in Qfis tadia ent he int h eof t space the armsin proximity to. saidhead whereby the arms may be brought together to disengage the trunnion from its cooperatingmernber; and a keeper on said mounting'for engagement with said head to restrain movement of said arm along the axis'of the trunnion,

15. A window bracket including, a pair of arms pivotally connected together, one end of one of said arms being pivotally connected to'thewindow and means for detachably connecting the end of the other armto the window frame in-- cluding a pivoting pin associated with the; arm, a stile plate secured to the window frame and associated with said pin; a head formed onthe end of the. arm carrying said pin, a notch in said-head,.a lug: carried by: said stile. plate spaced from. said pin adapted. toengagein said notch, said lug being bent to engage over: the edge of saidhead of saidarm to hold the head of the armlocked to the stile. plate excepting when. said notch. ispivoted. into. alinement with the edge of saidi lug after said window'is. closed.

16.. Agwindow' supporting. bracket including ga pair of pivotally connected arms adapted to form a knee joint, adjustable friction means in the said knee joint to hold the window supported byv said bracket in any adjusted open position, an attaching end formed on one of said arms of said bracket including a circular head-like portion, a notch in the edge of said head portion positioned adjacent the arm, a stile plate adapted to be secured to the window frame, a pivoting pin associated with said head and said stile plate, a lip formed on said stile plate projecting in a manner to permit said head to ride under said lip in the normal operation of said bracket, said lip having an edge formed to the shape of said notch in said head topermit said head to be released when said notch coincides with said lip after-said window is closed.

17. A window bracket including, a pair of arms pivotally connected together to provide a knee joint, means for detachably securing one end of one of said arms to a window frame including a stile plate, a head formed on the arm connecting with the stile plate, a pivoting pin associated with said head, a notch formed in said head, and a lip formed on the stile plate under which said head is adapted to rotate normally to lock said head with said pin pivoted in said stile plate during the entire movement of the window, said notch coinciding with the edge of said lip to release said head when said head is rotated to a predetermined position when said window is closed.

18. A window bracket including, a pair of arms pivotally connected together, one of said arms being pivotally connected to a window sash, the other of said arms being detachably secured to the window frame, said arms being adapted to fold into alinement when the window is closed, a pin associated with the arm connected to the window frame, a notch on one side of said pin connected arm, a stile plate for receiving said pin, a lip formed on said stile plate adapted to engage over the edge of said arm. carrying said pin to hold the end of said arm locked to said stile plate in the rotation of the arm on said pin, said notch coinciding with said lip at a predetermined point of rotation of said arm pivoting on said pin after said window is closed to permit said arm connected to said pin to be released from under said lip. I

19. A lock for the inner end of a window bracket including, a circular head-like portion formed on said bracket, a stile plate, a lip for engaging over said head to lock said head against the stile plate, a pivot pin connection between said bracket and said stile plate, and a notch in said bracket adapted to permit disengagement of said bracket from under said lip at a predetermined point after said window is closed to release the window bracket from the window frame and stile plate.

20. A window bracket including, a pair of arms pivoted together on one end to form a knee joint, adjustable friction means formed in said joint, a bracket secured to the window sash having a friction joint for one end of one of said arms, the other arm having a circular head formed on the free end thereof, a notch in one side of said head, said arms being formed with an offset from said knee joint to space the outer free ends apart and to provide spring means between the ends of said arms, a stile plate adapted to be attached to a window frame, a pivoting 'pin connection between said head and said plate, a lip formed on said stile plate including an overlying ear-like portion, said head being detachably secured under said lip by rotating said head into position to aline said notch with said ear of said lip, the spring between the ends of said arms causing said other arm to be snapped into place in attaching said bracket to said stile plate and to be released therefrom by squeezing the free ends of said arms together.

21. A window supporting bracket including, arms secured together to form a knee joint, friction means in said knee joint, one end of one of said arms being pivotally connected to a window sash, the other end of the other arm including a head, a stile plate adapted to be secured to a window frame, a pivoting pin connection between head and said plate, locking means holding said connection intact throughout the entire window movement, including a channel lip projecting from said stile plate adapted to engage over said head to hold said plate pin connected pivotally to said stile plate, and a notch in one side of said head to permit said head to be released from under said channel lip, thereby releasing said pin and bracket from said stile plate.

22. A window bracket including, a pair of arms pivotally connected together on one end to space the opposite ends apart, a sash bracket for supporting the end of one of said arms to a window sash, a head formed on the end of the other of said arms, a notch formed in the edge of said head, a stile plate carried by the window frame, a pivoting pin connection between said head and said plate, a channel lip under which said head is adapted to engage when said notch coincides with the edge of said channel lip, the spring of said arms automatically forcing said pin connection together, and throwing said head into position under said channel lip to normally lock said head thereunder for operation in supporting a window by said bracket.

23. A window bracket comprising, a pair of arms pivotally connected together to form a knee joint, the other ends of said arms being free, one of which is connected to a window sash to pivotally support the same, the outer free ends of said arms being spread apart to cause the spring nature of the arms to cause the ends to be held apart, a bracket plate secured to the window frame, a pin and hole connection between the free end of one of said arms and said plate, the spring between the arms holding said pin normally in said hole, a channel lip engageable over the edge of said arm connected by said pin, and a notch in the edge of said arm adapted to release said head from under said channel lip at a predetermined point, said head snapping into operative position automatically in attaching said arm connected by said pin to said window plate.

24. A sash fastener comprising a pair of arms, overlying ears formed on said arms, a friction washer disposed between said cars, a strap issuing outwardly from one of said ears and having a portion overlying the other car, a bolt having two co-acting parts, one internally threaded and the other externally threaded, one of said parts having a shank extending through said ears and washer, said parts when screwed together drawing said ears toward one another, and means fixed relative to said strap for holding the part with the shank from rotation relative to said strap.

CHESTER O. GOSERUD.

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