US2180578A

US2180578A - Door guard and stay

Info

Publication number: US2180578A
Authority: US
Inventors: Joe B Bradshaw
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-06-17
Filing date: 1938-06-17
Publication date: 1939-11-21
Anticipated expiration: 1956-11-21

Description

\ Nov. 21, 1939. J B, BRADSHAW 2,180,578

DOOR GUARD AND STAY Filed June 17, 1938 2 Sheets-Sheet 1 52A DSHA w MC M ATTORNEY Nov. 21, 1939. B, BRADSHAW 2,180,578

DOOR GUARD AND STAY Filed June 17, 1938 2 Sheets-Sheet 2 INVENTOR ATTORNEY 24 Z4 E 4/35 5 BRADSHAW I Patented Nov. 21, 1939 UNITED STATES DOOR GUARD AND STAY Joe B. Bradshaw, Stanford, Ky.

Application June 17,1938, Serial No. 214,235

19 Claims. '(01. 292 -272) This invention relates to holding means for closure members having a hinged or relatively pivoted support, and its principal object is to provide a holding means that will effectively secure a closure member in any one of several predetermined states of opening.

Door guard devices as they are known to applicant have the common fault of being loosely coupled members that permit movement of the door to and from the casing in a breeze or draft of air, which produces much rattling and slamming and is therefore a constant annoyance to a room occupant and others within hearing. When the door closes due to a gust of air, the guard 5 device fails to serve the function for which it was intended, that is, to hold the door open to provide ventilation. One such device is that commonly known as the chain door guard. It is a guard only, and is not a door stay, since it will not hold 20 the door in part open position against unintentional forces applied to the door.

It is therefore another object of the invention to provide a door stay for closures in dwellings and the like that will effectively hold a door in a selected open condition against'drafts or air currents, and that will be secure against disassociation from the outside.

Another object of the invention is to provide a relatively rigid door stay; that maybe adjusted from one side of the door either to firmly hold the door in any one of several positions of opening or to retain the door in securely locked condition,but which will not be accessible from the other side of the door in either instance for disassociation when it is indoor holding adjustment.

Another object of the invention is to provide a holding means fora hinged door, that will effectively retain a door in any one of an infinite 40 number of open positions within the. limits defined by the holding means.

Another object of the invention is to provide a door stay with friction means for holding a door in a selected part open-condition against accidental or unintentional closing forces, but which will not prevent closing of the door by intended forces.

A further object of the invention is to provide a door stay in cooperation with a door handle as original equipment in architectural installations, whereby the hardware fittings thereof may be reduced to a minimum, and yet effect partial opening of the door though secured against unauthorized entrance therethrough.

A further object of the invention is to provide a fixture for a closure member, adaptable for diversified installation, whereby it may serve effectively either as a friction stay for an infinite number of open positions, or as a stay and opening guard proof against disassociation from the 5*;

opposite side of the closure.

Another object of the invention is to provide stay means for pivoted closure. members; thatwill automatically adjust itself in response to either an opening or closing thrust to retain the 10-1:

closure member in the exact open position to which it has been moved. A further object of the invention is to provide a door stay that will-effectively operate to hold a closure member in any selected position from tightly closed up to wide open at substantially and yet may be quickly uncoupled to permit free swinging'of the closure member.

A still further object of the invention is to provide a door handle that will operate as a12 keeper for a door guard, by which the door is permitted to open a limited amount.

Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings wherein a preferredembodiment of the present invention is clearly shown.

In the drawings: Fig. 1 is a front elevational view of a guard device mounted on a door and casing and coupled in guarding and staying relation.

Fig. 2 is a side elevationalfview of the same substantially as indicated by the arrow 2 in Fig. 1.

Fig. 3 is a sectional view through the adjacent Y door and casing in closed relation substantially as indicated by the line and arrows 33 of Fig. 1, and showing the guard device in top plan.

Fig. 4 is a similar view, but shows the guard device in a shifted position incident to that taken when the door is in part open position.

Fig. 5 is a vertical sectional view through part of the mechanism substantially as indicated by the line and arrows 5--5 of Fig. 1. 4

the handle substantially as indicated by the lines and arrows 99 of Figs. 1 and 8.

Fig. 10 is a View similar to Fig. 9, but with the parts moved to a position for coupling the handle and stay means.

Fig. 11 is a transverse sectional view through the handle, substantially as indicated by the line and arrows H-li of Fig. 9.

The foregoing objects are accomplished and the stated fault is overcome by providing a swiveled boom member with a lateral arm cooperating with a guide, and retainable in a selected posi- 1 In the preferred form,-

, turning. That assures that the

slots

30 and 38 tion by a friction device. the boom is mounted firmly on the casing with the associated friction device housed within the casing. The cooperating guide is combinedwith the well known door handle and affords a slot in the body thereof for reception of one end of the lateral arm, when the latter is rotated to extend across the gap or seam between the closure member and easing therefor; there being means for either securely coupling or uncoupling the lateral arm and slotted member as occasion demands. Whenmounted adjacent the free edge of a pivoted closure member, such as a house door, the device operates as a door guard and friction stay for holding the closure member in an adjusted open position, and prevents opening beyond a predetermined limit by an unauthorized person. When mounted adjacent the pivot of the closure member, whether the member be pivoted at one edge or at some intermediate point between the edges, the device operates as a friction stay for holding the closure member in any selected open position from closed up to about In any instance of mounting, the boom and guide elements are quickly and easily coupled and un coupled from a point on one side of the closure member, but are inaccessible of either manipulation from a point on the opposite side of the closure member. I

With more specific reference, and particularly to the drawings, I0 refers to a door or closure member of the hinged or pivoted type, being supported by or surrounded by a frame or casing l2. The hinges or pivots for the door being conventional structure are not shown. Along the meet ing or free edge of the door, adjacent the gap l4 between it and the casing, a handle I8 is mounted by screws 20 extending through apertures. 22 in feet 24 and 25, one attached at each end of and supporting the handle I8. The handle is of particular construction, and differs from the known prior art, in that the hand engaging part or bar 28 is hollow 01' tubular, and is provided with a' pair of longitudinal slots 30, each opening at one end into a transverse slot 32. The slots 30 with the connecting slot 32 are so arranged in the tubular bar thatthe cross slot 32 opens in the face of the bar, while the slots 30 extend from the ends of the slot 30 along the sides of the bar. That construction provides on the front face of the bar an overhanging tongue 34.

Loosely fitting within the bar 28, there is a plunger 36, that in turn may be hollow or tubu lar, or on the other hand it may be of solid construction. It is, however, slotted at 38 in substantial registry with the slots 30, though the slots 38 are of less overall length than the slots 30. A transverse slot 40 is also provided, but instead of joining the slots 38 at the ends thereof, it joins those slots at points intermediate their length, so as to form two overhanging

tongues

42 and 44. The plunger 36 is slidable within the bar 28, and a spring 46 pressing against a closed end member 48 of the bar and a head 50 of the plunger urges the plunger 36 against the opposite end of the bar, substantially as shown in Figs. 8 and 9. In that spring urged position, the

tongue 42 of the plunger normally closes the transverse slot 32 of the bar. A thumb rod 52 is slidable through the end member 48 and is secured to the head 50 of the plunger so that the plunger may be withdrawn to the extent indicated in Fig. 10 so as to bring the cross slots 32 and 49 into substantial registry. A pin 54 is set into the back side of the bar 28 and enters a slot 56in the plunger 36 to keep the plunger from will be maintained in substantial alignment at all times.

With the handle thus constituted, it serves as a guide or retainer for a brace or stay by which the door may be held in part open position. The stay and its fittings is preferably of the form illustrated in Figs. 1 to '7, and 11 inclusive, where a rod or boom 69 has a universal connection at one end with a mounting plate 62, while the other end of the boom has an angular extension or arm 6 adapted to extend over the gap 14 between the door and casing to a point well beyond the bar 48 of the handle where it ends in a head or enlargement 66. The mounting plate 62 is of suchcharacter as to match in general appearance and dimensions with the handle l8, and is adapted to be mounted in parallelism therewith on the casing l2 and adjacent the gap l4, and when so mounted, the arm 64 of the boom may be moved to coincide with the notch 32 of the bar 28. v

The universal connection of the boom B0, is effected by reducing the end portion as at 68 and passing it through a cross bore in a block 10, after itis headed over at T2 sufficiently to hold the parts against free turning, but loose enough to allow turning or rotating by hand. The block 10 is pivotally mounted between a pair of ears or lugs 14 carried by the mounting plate 62, by meansof one way screws 16 passing through the ears and threaded into the ends of the block 10, substantially as shown in Fig. 6. That mounting of the boom 60 provides for rotation of the arm .64 from a position extending over the edge of the door as shown in Figs. 1 to 4, through substantially or so that the arm extends away from the door, and the universal mounting also permits the boom as a whole to tilt outwardly from the casing, or lie close to and substantially parallel with the casing as shown in dotted and full lines in Fig. 5. The rotation to and from a position extending over the edge of the door is for the purpose of coupling and uncoupling the boom with the handle so as to serve either as a guard mechanism and door stay, or for permitting full opening of the door when uncoupled.

Contributing to the device as a door stay, a friction device is provided that operates to hold the boom in any position of inclination with respect to the casing that the boom may be moved to, incident to opening or closing of the door when the coupling is made. A housing 80, in the form of a tube that may have a closed end 82, is secured in the casing l2 so as to be perpendicular to the bottom of the mounting plate 62, and is held in place when the mounting plate is secured by the usual screws 20 driven into the casing. It is preferred that the near end of the housing 80 be open and have a peripheral flange or lip 84 seating within a counter sink of the casing. Centrally of the face of the housing end, an aperture 86 is provided for passage and movement of a connector or rod 88, that for the most part is enclosed by the housing 88 and extends throughout the length thereof. The inner end of the rod 88 is reduced at 99 to receive a bushing or the like in the form of a washer 92, that is held in place by riveting as at 94. The bushing 92 is of such size as to slide within the housing 89, and tends to center the rod 88 therewith, and prevent binding. When the boom is in folded position as shown in Fig. 5, the bushing will be at the end of the housing near the head 82. Unintentional movement of rod 88 within the housing is prevented by means of a spring sleeve or collett 98, that has a flange 98 received by a recess in the flange 84 of the housing, and disposed against the under side of the mounting plate 62, while the opposite end of the sleeve is slit to provide a pair or more of inwardly pressing spring tongues liiil-frictionally engaging the rod 88. As the rod 88 is moved in and out of the housing 80, it slides within the spring sleeve, and firmly holds the rod in the position desired.

An articulated connection is made between the rod 88 and the boom 68, by means of a sleeve IDZslidable and rotatable with respect to the boom 60, and that provides an apertured ear or lug I84, adapted to bereceived in a notch I06 of the adjacent end of the rod 88, where a hinged connection is effected by a pin I08. With the boom 69 and rod 88 thus connected,any oscillation or tilting of the boom with respect to the mounting plate 82, or the casing on which it is mounted, will move the rod within the sleeve 96 and along the housing 88, and the positions of the boom selected will be maintained, until an intentional force alters its position. That will obtain even though the boom be coupled to the handle element of a door.

Normally, the parts will be associated as illustrated in Fig. 1, with the exception that the arm 64 of the boom will be extending to the left as indicated in dashed lines, under which circumstances, the door will be free for wide open movement, and unencumbered by the guard mechanism. When it is desired that the mechanism serve as a guard for the opening and stay for the door, the boom while maintained substantially fiat against the casing 12 is rotated so that the arm extends across the edge of the door. That will dispose the arm 68 directly over the open end of the notch 32 in the bar of the handle, and if the thumb rod 52 is then raised, the arm 62 may be passed into the juncture of the notches 39 and 32. Release of the thumb rod 52 will allow the spring 46 to move the plunger 36 so that the tongue 42 passes over the arm 64 and closes the notch 32. The relation of the parts so coupled is fully illustrated in Figs. 1 to 4, 8, 9 and 11. The relation of the parts while the arm 64 is passing laterally into the slots is shown in Fig. 10. To make that coupling of the boom and handle, and in fact to uncouple them, the door must be tightly closed, otherwise the arm 64 and transverse notches will not align sufiiciently.

With the parts thus coupled, the door may be opened to any position within the limits defined by the longitudinal movement of the rod 88 within the housing 80. What ever part open position the door is moved to, the friction device will hold a ainst unintentional forces applied to the door. Thus breezes or gusts of air will not slam the door closed, or jerk it further open against the limits of the mechanism. One such part open position is illustrated in' Fig; 4, where it will be noted that the boom in tilting'outwardly from the casing has partially withdrawn the rod 88 from its housing, and through the friction de-' vice or sleeve. At the same time, the boom has rotated within the block") so that the arm '64 is canted around to assume a relation practically parallel with the face of the door It).

The position of the parts shown in Fig. 4 is but one of an infinite number that can be had within the mechanical limits of the device. In a device constructed in accordance with the foregoing disclosure, where the boom 68 and rod 88 are each six inches long, and where the rod 88 is capable of projecting out of the casing five inches, while the length of slot 30 in the'bar is three inches, it is found that the door may be opened as much as five inches from the tight disposed. in and withdrawn from the cross slots 7 or

notches

32 and 48 only when'the 'door is in tightly closed position, thearm 64 cannot be withdrawn while the door is open sufficient to permit a hand to be inserted.

When the guard mechanism is'so coupled, the door may be opened or closed'to any extent within the limits provided by the device by a mere pull or push upon the handle or door. When it is desired to uncouple the guard mechanism, the

door is moved to the closed position, if it is not' already so, then the plunger 38- is lifted to withdraw the tongue 42 from the notch 32, and the arm 64 is rotated to the left out of the way. The

tongues

42 and 44 reinforce the walls of the bar 28, so that it will be practically impossible for an unauthorized person to bend or warp the structure enough to uncouple, which might otherwise be possible by insertion of a bar or other tool.

It is desirable to incorporate with the structure, a night latch or bolt, by which all opening movement of the door is'prevented, except when the latch is released. I accomplish that by fasho ioning one of the feet 26 forythe handle' to provide a pair of loops or rings l 58, one on each side of the foot, and within the bore of which there is a bolt H2 fitted with a pin or finger piece I M J by which the bolt may be moved into projected or withdrawn position. A lip or web H8 extends around the bolt llz and is sufficiently spaced from the rings Hi! to form a U-shaped slct H8, forming a guide and retainer for the pin 4 l4. As shown in Figs. 1 and 2 the bolt I I2 is in the withdrawn position. Movement of the pin l M from the right hand side of the handle through the slot H8 to the other side of the handle projects the bolt H2 into a hole-J28 provided in the easing beneath the end of the mounting plate 62.

' This is the position with the latch on, and the mounting plate 62 reinforces the casing against breaking away when one tries to force the'door open.

The device is also adaptable to serve as a mere stay mechanism, in which instance it operates to hold the door or closure member with which it is associated in any position of opening. An instance of the kind is that oftransoms, and

other simple hinged or pivoted closures where wide or full opening of the member is desired. The parts of the mechanism are so proportioned .that installation in a manner that the friction device is on a line with the hinge pivots of theclosure member, permits opening of the member with the stay mechanism attached to about 90", which will not interfere with passage through the opening. Note a specific example. The rod housing 80 is set in the door or transom casing in line with the hinged edge of the door, and the boom is then mounted in the usual manner, but with the pivot 10 of the boom located beyond the edge of the door, while the free end extends toward the free edge of the door, and the arm 54 is adapted to extend over the door edge. The handle is is then mounted on the adjacent edge of the door so that when the door is tightly closed the arm 64 will be disposed in the end of the slots 3E! and 38 at their juncture with the

cross notches

32 and 40 respectively. With the handle so mounted, but with the remaining portions of handle slots extending away from the door pivot, provision will be made for travel of the arm 64 along the slots as the door is moved in opening or closing. As the door is opened, the boom 63! will be inclined with respect to its mounting support, which in turn will withdraw the rod 88 from its housing 80, its movement being restrained by the frictional engagement of the sleeve 96 which is suflicient to retain the door in any position of opening to which it may be moved within the limits of the mechanism. While the door is in the closed position, the stay mechanism may be uncoupled or recoupled as has been elsewhere described, so that when desired, the benefits derived from the stay mechanism may be either dispensed with or made use of.

It has been found that the overall length of the housing 80 and the rod 88 may be six inches or more without encountering difficulties in mounting even in buildings of inferior construction, for the minimum thickness of the casings about the doors is usually more than the length of the housing 80, so that there is little or no danger of the housing extending clear through the door casing, when the fixture is properly mounted.

It is desirable that the boom 60 and the rod 88 be made of relatively hard metal so that the purpose of the mechanism may not be defeated by bending, springing or cutting. To aid or simplify in packing, the lug I04 of the boom engaging sleeve is of sufficient length to extend through the aperture 86 of the mounting plate 62, and permit the rod 88 that is pivoted thereto to fold flat against the under side of the mounting plate 62, substantially .as shown in Fig. '7. That makes it possible to pack the mechanism in a narrow flat carton, which will take but little space upon the merchants shelves, and a device is thus provided that is adapted by simple mounting procedure to act as either a door opening guard, or as a mere door stay. Perfect installation is quickly and easily accomplished with but few and simple tools, a screwdriver, brace and bit, with perhaps a gimlet is all that is needed.

Once installed, the device is proof against disorganizing forces from the outside, and sufiices to hold the door in adjusted position without rat tling. The keeper element for the boom, that is the handle 28, serves as a manual for manipulation of the door.

While I prefer that the keeper element, that is the member It, be in the form of a handle, it

may bedeprived of its hand engaging features, and be characterized merely as a slotted guide means with a closure for the open end of the slot and my nomenclature of a handle come prehends the inclusion of such a simple element.

While the embodiment of the present invention as herein disclosed, constitutes a preferred form, it is to be understood that other forms might be adopted, all coming within the scope of the claims which follow.

What is claimed is as follows:

1. The combination with a door handle, of a boom having an angular headed portion, a friction device having a part slidably engaging an intermediate portion of the boom, means for mounting the boom on the door casing including a plate universally supporting one end of the boom, and apertured to receive a part of the friction device, said handle being slotted to receive the angular portions of the boom, and means for retaining the boom portion within the slot of the handle, said boom being releasable from the handle only when the door is tightly closed.

2. In combination, a bar handle adapted to be mounted near the free edge of a closure member, the bar of said handle being provided with a slot extending lengthwise thereof and arranged in a plane parallel to the surface of the closure member, an L-shaped arm adapted to be supported at one end on the casing and also adapted to swing outwardly therefrom and across the free edge of the closure member, friction means for restraining movement of the arm, and means for retaining the free end of the arm in the slot of the bar, said bar and arm being capable of coupling and uncoupling only when the closure member is in closed registry with the casing.

3. A door guard comprising in combination a slotted handle secured to the edge of the door, a boom securedto the door casing, means pivotally supporting one end of the boom for swinging out from the casing, and across the meeting edge of the door and casing, and means forretaining the swinging end of the boom in the slot of the handle, said retaining means being operable when the door is closed for releasing the boom from the handle.

4. A door guard comprising in combination, a slotted handle secured to the face of the door, a boom secured to the door casing, means pivotally supporting one end of the boom for swinging out from the casing and across the meeting edge of the door and casing, means for securing the swinging end of the boom in the handle slot, and means housed within the casing and slidably engaging the boom for holding the door in part open position.

5. A door guard comprising in combination, a slotted handle secured to the face of the door, a boom secured to the door casing, and having a part adapted to extend across the gap of door and casing, said handle having a notch for passing the boom part to the slot of the handle, and a slide normally closing the notch for retaining the boom and handle in coupled relation.

6. A door guard comprising in combination, a slotted handle secured to the face of the door, a boom secured to the door casing, and having a part engageable with the slot of the handle, a spring pressed slide carried by the handle for securing the boom in the slot when so coupled.

7. A guard mechanism for a door hingedly secured to a casing, comprising in combination, an angular member pivotally mounted on the casing and adapted to extend over the adjacent edge of the door, a bar handle mounted on the face at the adjacent edge of the door, and having an open ended slot for slidably receiving the end of the angular member, the open end of said slot being registerable with the extended portion of the angular member-when the door is in closed position, and a slide normally closing the open end of the slot to prevent unauthorized withdrawal of the angular member from the slot.

8. The combination set forth in claim '7 where in, the bar handle is hollow, a spring pressed plunger housed within the hollow handles, said plunger to register with the handle slot when in a selected position, but otherwise closes the open end of the handle slot.

9. In combination with a door handle of the bar type, guard means for retaining the door to which it is attached in an indefinite number of partly open positions, and comprising, an angular rod having one end mounted on the casing for universal movement, and an arm extending over the edge of the door to overlie the handle, and means provided by the handle to retain the extending arm in slidable relation therewith throughout its entire range of movement, but detachable therefrom and actuatable to permit wide opening of the door.

10. The combination set forth in claim 9 wherein the handle provides a slot length-wise thereof and one end of which opens laterally in registry with the overlying arm when the door is in closed position, and wherein the means for retaining the arm in slidable relation with the handle comprises a member normally closing the open end of the slot.

11. The combination set forth in claim 9 in which the guard means defines the maximum amount that the door may be opened and includes means that yieldably restrains the door against movement from any position between closed and the maximum open position.

12. In combination with a door handle of the bar type, guard means for retaining the door to which it is attached in partly open position, and comprising, an angular rod having one end mounted on the casing for universal movement, and an arm extending over the edge of the door to overlie the handle, means provided by the handle to retain the extending arm in slidable relation therewith but detachable therefrom to permit wide opening of the door, and means including a sleeve slidably engaging a part of the rod for frictionally restraining the rod against movement on its universal mount, whereby the door is firmly retained in any position to which it is moved within the limits defined by the guard device.

13. In combination with a door handle of the bar type, guard means for retaining the door to which it is attached in partly open position, and comprising, a headed member extending across the handle, and having a pivotal support on the door casing, means provided by the handle for reception and retention of the headed member, and including a slot extending lengthwise of the bar and that has an open end on the face of the bar for passage of the headed member when the door is in the closed position, said headed member adapted. to swing to and from the casing and move along the handle slot as the door is moved from and to the casing.

14. In combination with a door handle of the bar type, guard means for retaining the door to which it isattached in partlyopen position, and comprising, a member secured to the casing and adapted to move relative thereto as the door is opened or closed, said handle providing a slot adapted- ;to receive a part of the member, and means provided by the handle for preventing removalof-the member from the slot except when the door is closed, said guard means permitting limited opening of the door, but being unreleasable from the exterior of the door.

15. The combination of a stay mechanism for a door comprising, a member pivoted at one end and'adapted to oscillate to and from a support to which it is attached, said member having a lateral arm rotatable to extend over the edge of the door, and also away from the same, a plate adapted to be secured to the casing and supporting the pivot for the member, a rod slidable through the plate to project within the support, a sleeve carried by the oscillatable member and hingedly connected with one end of the rod, a tubular housing adapted to be mounted within the support for guiding the rod, a sleeve embracing the rod within the housing and having spring tongues frictionally engaging the rod and adapted to retain the rod against sliding through the plate, and means adapted to be carried by the door providing a slot for securing the lateral arm.

16. In a door handle, the combination comprising, a tubular hand engaging bar, brackets at each end of the bar adapted to mount the bar on a door, a plunger slidable within the hand bar, both the plunger and the bar having longitudinally arranged slots opening with branches to the front face of the handle, means spring urging the plunger to close the branch of the bar slot, and means for moving the plunger to a position with the branch slots in registry, and an arm pivotally secured to the door casing, said slots when in registry adapted to receive the arm extending from the door casing for limiting the opening of the door against unauthorized entry.

17. In a door handle, the combination comprising, a tubular hand engaging bar, brackets at each end of the bar adapted to mount the bar on a door, a plunger slidable within the hand bar, both the plunger and the hand bar having longitudinally arranged slots opening with branches to the front face of the handle, said plunger being spring urged to normally close the slot opening of the hand bar, means preventing rotation of the plunger within the hand bar, a door guard adapted to be secured to the door casing and having an arm extensible over the edge of the door and means for aligning the open ends of both slots to receive the arm of the door guard to limit the amount of door opening.

18. A door handle constructed and arranged to limit the amount of door opening, by an unauthorized person, comprising in combination, a hand engaging portion having a longitudinal slot joining a transverse open branch, a member secured to the casing and adapted to extend over the hand engaging portion, said open branch adapted to receive the member, said member being shiftable relative to the casing for retaining the door in partly open position, means normally closing the open branch for preventing escape of the shiftable member from the slot while the door is all but closed, brackets at each end of the hand engaging portion for securing the handle to a door, and means carried by one of the brackets and projectable into the adjacent casing for maintaining the door tightly closed against unauthorized entry. H

19. In combination a guard mechanism for holding a closure member in a selected open position, including, a pivoted boom having a part adapted to extend over the edge of the closure member and adapted to swing out therefrom, a

guide adapted to be carried by the closure membet for releasably coupling with the end of the boom, friction means acting upon the boom restraining its swinging movement, and means securing the coupling of boom and guide against separation.

JOE B. BRADSHAW.