US2211399A - Sprinkler head - Google Patents

Description

Aug. 13, 1940. s. wlNsLow SPRINKLER HEAD Filed March 2, 1939 2 Sheets-Sheet 1 vATIORNEK Aug. 13, 1940.- s. l.. wlNsLow SPRIHKLEB HEAD Filed latch 2, 1939 2 Sheets-Sheet 2 INVENTOR.

BY M A A ORNEY.

Patented Aug. 13,1940

PATENT OFFICE 2,211,399 SPRINKLER HEAD Seth L. Winslow, Chicago, Ill.

Application March 2, 1939, Serial No. 259,397

16 Claims.

More particularly, the invention relates to' a water discharge head for a re extinguishing system, it being the general object of the invention `to provide a new and improved head of this type.

A great objection to sprinkler heads in the forms now available on the market is caused by their unsightly appearance. These heads are constructed to extend a substantial distance below the ceiling of the room in which they are installed, and, since they are of various odd shapes, they detract from the appearance of the ceiling. Furthermore, with the types of lighting now in vogue these projecting sprinkler heads Cil cause unsightly shadows on the ceiling. These projecting heads with their unsightly appearance and shadows are particularly objectionable in office buildings and other types of buildings wherein the rooms are finished and decorated. It is an object of the invention to provide a new and improved sprinkler head which eliminates these disadvantageous features of the present day devices.

Another object is to provide a new and improved sprinkler head which is simple in construction, readily installed, and which is adapted to be installed with its lower or fusible link supporting end substantially flush with the ceiling of the room in which it is mounted so as to provide a sightly appearance.

Another object is to provide such a sprinkler head which has a water deflector device normally held in a raised position by means including a y fusible link, the defiector device being releasable to drop down to a predetermined position upon fusing of the link.

Another object is to provide such a sprinkler head together with a tool to facilitate installing the head.

Other objects will become readily apparent from the following detailed description taken in connection with the accompanying drawings, wherein:

Fig. 1 is a vertical central section through a preferred form of the invention which is installed in operative relation with a supply pipe and ceiling.

Fig. 2 is a similar view of the device after fusing of the link, showing the deflector device in its lowered position.

Fig; 3 is a fragmentary bottom view looking up under Fig. 1.

Fig. 4 is a fragmentary section substantialy alongthe line 4-4 of Fig. 1.

Fig. 5 is a fragmentary section substantially along the line 5-5 of Fig. 2.

Fig. 6 is a vertical central section similar to Fig. 1 showing another form of the invention.

Fig. 7 is a section along the line 1-1 of Fig. 6.

Fig. 8 is a fragmentary vertical elevation in a glane; substantially at right angles to that of Fig. 9 is a sectional view approximately along the line 9-9 of Fig. 6.

Fig. 10 is a vertical elevation of a tool shown in operative relation to the preferred form of the invention for installation purposes.

Fig. 11 is a similar view taken in a, plane at right angles to that of Fig. 10.

Fig. 12 is a section substantially along the line |2-i2 of Fig. 11.

While my invention is susceptible of embodiment in many different forms, I have shown in the drawings and shall herein describe in detail two such embodiments with the understanding that the present disclosure is to be, considered as an exempliiication of the principles of the invention and is not intended to limit the invention to the forms shown. The scope of the invention will be pointed out in the appended claims.

In the form illustrated in Figs. 1 to 5 inclusive, the invention is shown as comprising an upright tubular member 20having a screw-threaded portion 2| at its upper or intake end adapted for connection with a water supply pipe 22. 'Ihe upper end of the tubular member has an inwardlyextending wall 23 dening an inlet opening 24, the wall having a depending annular portion 24a forming a seat around the inlet opening against which a valve 25 engages. At its lower end, the member 20 has secured thereto a circular head or disk-like member 26 which is provided with a hub portion 21 extending within the lower end of the member 20. Preferably, the hub portion 21 and the member 20 are screw-threaded as shown at 28 to securel the parts together, and pins 29 are provided for locking the parts in their assembled relation. The hub portion 21 is provided with a central passageway or port 30 which forms a discharge opening, through which water is discharged when the valve 25 is unseated, as hereinafter more fully described.

As illustrated in Figs. 1 to 5, the valve 25 is operable by means of a stem or rod 35 which is secured to the valve at its upper end by means of a ball end 35' engaging in a ball socket 25" in the valve. As illustrated in Fig. 1, the rod 35 extends downwardly substantially centrally of the member 20 and through the discharge opening 30, and at its lower end is screw-threaded at 31 to receive a dished deflector member 38. 'I'his deflector member is preferably provided with openings 39 in its base portion andopenings 40 in its outer inclined wall in a manner well known in the art.

When a sprinkler head discharges, it is preferable to have the deflector member 38 located a substantial distance below the ceiling of the room in which the sprinkler head is mounted so that the water passing through the discharge opening strikes the deflector member and is directed upwardly and outwardly so as to sprinkle the water over a substantial area. In the form shown in Figs. l to 5, means is provided to give the deflector member a lowered position as shown in Fig. 2. This position is determined by means of a guide member 4| which is screw-threaded to the upper end of the rod 35 at 36 and has a plurality of radially extending arms 42, the outer ends of which rest upon the hub portion 21 of the head 26 to hold the deilector member 38 in its lowered position. It will be apparent that the spaces intermediate the arms 42 serve to form a passage through the member 4| for the water flowing to the discharge opening 30. The arms 42 gui-.de the rod 35 in its movement from the raised position shown in Fig. 1 to the lowered position shown in Fig. 2, and in such lowered position the arms rest upon the hub 21 and serve to support the rod 35 and the deector member 38.

The invention is provided with a deiiector member which may be raised to a position adjacent the head 26 in order that the entire device may be positioned with its lower end substantially flush with the ceiling 45. The means for holding the deilector member in its raised position and the valve 25 seated to close the inlet opening 24, will now be described.

As illustrated in Figs. 1 and 3 to 5, inclusive, the head 26 has a pair of opposed and depending portions 50 which are provided with cross grooves 5| forming ledges 52. These ledges serve to support the outer ends 53 of a pair of angular levers 54, the inner and downwardly extending ends 55 of which are provided with cross grooves 56 for attaching a fusible link designated generally 51. The intermediate portions of the levers are tapered. as shown most clearly in Fig. 3, so that the lower ands 55 thereof are much narrower than the L iper ends 53. When the sprinkler head is installed, it is not only necessary to have the valve '25 pressed tightly against the seat, but it is also necessary to have the fusible link 51 held undei a tension. This is accomplished by means including a cross bar 60 which extends diametrically of the head 26 and has its outer ends overlying the levers 54. Preferably, small diameter pivot 'vins 6| are provided intermediate the ends of thff cross bar 60 and the adjacent portions of the lmers 54, the levers and cross bar having shallow" grooves in which the pins are positioned. The f ecessary tension on the fusible link and pressa-e on the valve member are applied by mear-r` of a. screw device 62 which extends throif-i a threaded opening 63 in the cross bar so tl.` its upper end engages the lower end of the 2 35. By adjusting the screw device 62, the necessary tension on the fusible link and the ssure on the valve 25 may be obtained. WheY the adjustment is completed, the parts are eferably locked in their adjusted positions by rrof a pin 64 which extends through the cross liar and screw device 62. The screw device has rquared end 65 to receive a suitable wrench.

Tlvv 'usible link 51 may be of any preferred consuwction. As illustrated herein, it is shown as comprising a pair of U-shaped members 66 and t' positioned one upon the other so as to form f link. These members are soldered togethr`- along their adjacent faces and provided with crimp as illustrated.

PiLj-rably, a tubular guard or shield 68 is inserir through the opening 45 formed in the ceilin" and is attached to the head 26 by means of a plurality of indented spring portions 68' which engage the upper surface of the head 26. The shield 68 is provided with an outwardly extending flange 69 at 'its lower end which covers the adjacent portion of the ceiling and shields the edge of the opening 45.

In the form illustrated in Figs. 6 to 9, the invention is shown as comprising a tubular member 2D' having a circular head 26' formed integrally with the lower end thereof. The upper end of the tubular member is provided with a threaded portion 2|' for attachment to a supply pipe 22. In this form of the invention, a hub portion 21' is formed integrally with the head 26' and member 20 and is inclined downwardly to form an annular valve seat 24 surrounding a discharge opening 30. A disklike valve member 25' is formed integrally with a deiiector device 38. A plurality of slender rods 86 are secured at their lower ends to the valve member 25' and extend upwardly for engagement with a ring 8|, the rods and ring serving as a guide means for the valve-deector element and, furthermore, serving as a means for holding the defiector in its lowered position, the ring 8| having a beveled surface 82 arranged to engage the upper beveled surface 83 on the hub portion 21' for this purpose.

AThe head 26 has a tubular depending portion 26" and also a pair of depending portions 50 located at diametrically opposite points on the inner surface of the tubular portion 26". The portions 50 are provided with cross grooves 5| forming ledges 52. These ledges cooperate with levers 54, the fusible link 51. the cross bar 60 and other parts similar to those illustrated in Fig. l and hereinbefore described to maintain the valve 25 in its seated position and the deiiector 38 in its elevated position. An outwardly extending flange |26 is preferably formed integrally with the head 26' and tubular portion 26 and serves to overlap the adjacent portion of the ceiling 45 around the opening 45. If desired, the flange |26 may be mounted flush with the surface of the ceiling, as shown in Figs. 6 and 8, in which event no part of the device projects below the surface of the ceiling.

As a means for facilitating circulation of hot air from a fire around the link, a tubular air passage may be provided intermediate the head 26 and guard 68, as shown in Figs. 1 to 5. In the form shown in Figs. 6 to 9, a plurality of apertures 9| are formed in the tubular depending portion 26" of the head 26. Hot air may pass upwardly in the vicinity of the fusible link and then on through the passage 90 or ports 9| to the space above the ceiling, the circulation of air being permitted either by similar openings in other sprinkler heads or by suitable other openings above the ceiling (not shown).

Installation of a sprinkler head of the type shown herein is preferably accomplished by means of a tool of the type illustrated in Figs. l0 to 12. This tool consists of a cylindrical shank 90' squared at one end 9|', to facilitate operation thereof by means of a wrench. The other end of the tool has an enlarged portion 92 and four upwardly extending jaws 93. These jaws are positioned in pairs, each pair being arranged to receive one of the depending portions 50 of the head 26 therebetween. When the tool has been properly applied to the head (the portion 92 being recessed at 92 to admit the centrally located parts of the head), it may readily be operated to connect the head to a supply pipe l22. The supply pipe is preferably placed so that the' sprinkler head, when installed, is in the position shown in Figs. 1 and 2 with the fusible link 51 positioned a short distance below the ceiling 45.

Since the sprinkler head, including its valve, valve stem, deilector member, fusible link and intervening parts, is fully assembled at the factory and prior to installation, it is merely necessary to leave an appropriate hole in the ceiling beneath each supply pipe and then to secure the sprinkler head to the supply pipe by use of the tool shown in Figs. 10 to 12. When the sprinkler head has been installed, the shield 68 may be applied by an upward movement to a position wherein the portion 68 engages the head 26. With the form of the invention shown in Figs. 6 to 9, the tubular member 20 may be furnished of extra length so that the final cutting off and threading operations may be performed at the point of installation to t `the device accurately to the supply pipe 22 and the ceiling.

The invention as illustrated herein is preferably constructed of materials which will have the necessary strength and which will prevent corrosion of the parts over long periods of time. Thus, the valve 25 is preferably surrounded by a noncorrosive metal gasket 91. The other parts illustrated are also non-corrosive. Furthermore, the levers 54 are preferably of non-corrosive stainless steel or other-noncorrosive metal having poor heat conducting characteristics.

It is believed readily apparent that when the invention is installed in a manner such as illustrated in Figs. 1 and 6 it provides a sightly appearance. The link 51 may be mounted flush with the lower edge of the shield 68, but even if mounted a short distance below the shield, as shown in the drawings, the parts are so close to the ceiling that the shadows, if any, would normally fall within the shield 68. This is due to the fact that the lighting units in general use have the light source located a substantial distance below the ceiling.

In the form illustrated in Figs. 1 to 5, the spring portions 68' of the tubular shield 68 are preferably so proportioned that they serve to pull the shield upwardly against the lower surface of the ceiling. With the spring portions 68 shaped as illustrated, they also compensate for slight variations in the location of the discharge head vertically with respect to the ceiling.

The form of the invention illustrated in Figs. 6 to 9 embodies additional advantageous features. Preferably, the tubular member 20 is manufactured so as to be of extra length, thus permitting the upper end to be cut off and threaded at the place of installation so that it may be tted to the Water pipe 22 in a manner positioning the lower end of the discharge head flush with the ceiling. The tubular member with the valve seat formed integrally therewith then forms a single extension to the supply pipe having no joints therein. By providing slender rods 80 intermediate the valve-deflector element and the ring, the deector element is held in a lowered position by engagement of the ring 8| with the hub portion 21'. In addition to beveling the lower surface 82 of the ring and the upper surface 83 of the hub 21', it is preferable to bevel the upper surface of the ring so that it extends inwardly and downwardly as shown so as to facilitate passage of the water therethrough when the head discharges. In this form of the invention, the fusible link 51 and the parts held in position thereby are protected against accidental injury in case the head is dropped by the tubular depending portion 2B". Such protection can be obtained in the form illustrated in Figs. 1 to 5 by extending the depending portions downwardly to a position level with or below the lower ends of the levers 54.

I claim as my invention:

n 1. A water discharge head for a fire extinguishing system having a water supply pipe located above a ceiling which has an opening into which the device extends comprising, in combination, a tubular member having means forming a valve seat, a valve engageable with said seat to prevent the flow of water through said tubular member, a stem for said valve, a deilector element movable with said valve and stem, means including a fusible link for maintaining said valve seated and said deector in an elevated position below the ceiling, means for holding said deflector element in a lowered position below the ceilingwhen the link is fused, means for securing said tubular member to said water supply pipe so that the lower end of the discharge head is substantially flush with the lower surface of the ceiling when the deflector is in its elevated position, and a tubular shield secured to the lower end of said tubular member and located in said ceiling op'ening, said shield having an outwardly extending flange at its lower end adapted to overlap the edge of the ceiling opening.

2. A water discharge head for a fire extinguishing system having a water supply pipe located above a ceiling which has an opening into which the device extends comprising, in combination, a tubular member having means forming a valve seat. a valve engageable with said seat to prevent the flow of water through said tubular member, a stem for said valve, a deector element movable with said valve and stem, means including a fusible link for maintaining said valve seated and said defiector in an elevated position above the lower surface of the ceiling, means for holding said defiector element in a lowered position below the ceiling when the link is fused, means for securing said tubular member to said water supply pipe so that the lower end of the discharge head is substantially flush with the lower surface of the ceiling when the dei'lector is in its elevated position, a tubular shield secured to the lower end of said tubular member and located in said ceiling opening, said shield having an outwardly extending flange at its lower end for overlapping the edge of the ceiling opening, and means providing openings facilitating the circulation of air across saidfusible link.

3. A water discharge head for a fire extinguishing system having a water supply pipe located above a ceiling which has an opening into which the device extends comprising, in combination, a

tubular member positioned above the ceiling having means forming a valve seat, a valve engageable with said seat to prevent the flow of water through said tubular member, a stem for said valve, a deilector element movable with said valve and stem, means including a fusible link for maintaining said valve seated and said deilector in an elevated position above the lower surface of the ceiling, means for holding said deector element in a lowered position below the ceiling when the link is fused, and means for securing said tubular member to said Water supply pipe so that the lower end of the discharge head is substantially ush with the lower surface of the ceiling when the deflector is in its elevated position.

4. In a sprinkler system having a water supply pipe positioned a short distance above an opening in a ceiling, in combination, a sprinkler head positioned with its lower end substantially flush with the ceiling and comprising'a supporting structure secured to the supply pipe and a valvedeficctor structure movably mounted on said supporting structure, and means including a fusible link for holding said valve-deector structure in a raised position above the lower surface of the ceiling to prevent the flow of water, said valvedefiector structure upon fusing of said link dropping to a lower` position wherein Ithe deflector is positioned below the ceiling.

5. In a sprinkler system having a plurality of water supply pipes positioned a short distance above openings in a ceiling, in combination. a plurality of sprinkler heads positioned with their lower ends substantially flush with the ceiling and each comprising a supporting structure including a tubular member secured at one end to a supply pipe and a valve-deflector structure movably mounted in said tubular member, means including a fusible link for holding said valve-deflector structure in a raised position above the lower surface of the ceiling to prevent the flow of water, said valve-deflector structure upon fusing of said link dropping to a lower position wherein the deflector is positioned below the ceiling, and means for holding said valvedefiector structure in its lowered position.

6. In a sprinkler system having a plurality of water supply pipes positioned a short distance above openings in a ceiling, in combination, a plurality of sprinkler heads positioned with their lower ends substantially fiush with the ceiling and comprising supporting structures secured to the supply pipes and valve-deector structures movably mounted on said supporting structures, means including fusible links for holding said valve-deflector structures in a raised position above the lower surfaces of the ceiling to prevent the flow of water, said valve-deflector structures upon fusing of links dropping to a lower position wherein the defiectors are positioned below the ceiling, and means forming openings to facilitate the passage of air across said links.

7. A water discharge head for a re extinguishing system comprising, in combination, an upright tubular member adapted at its inlet end for connection with a water supply, a disklike element extending laterally from the discharge end of said tubular member and having a central discharge opening therein, said disklike element having a pair of diametrically opposite depending portions provided with opposed cross grooves forming ledges, a valve for controlling the flow of water through said tubular member, means forming a valve seat against which the valve is normally engaged to prevent ow through said member, a rod secured at one end to said valve and normally positioned in said tubular member, means on said rod for guiding the rod during movement longitudinally of said member, a deecting device secured to the lower end of said rod and positioned close to the surface of said disk-like element when said valve engages said seat, and means for holding said valve in engagement with said seat comprising a crossbar positioned between said depending portions of the disk-like element, a pair of levers positioned under said cross bar with their outer ends resting on said ledges and their inner ends extending toward each other for the reception of a fusible link, a fusible link, and a screw-threaded device extending through said cross bar and into engagement with said deflecting device adjustable to take up the play between the parts and place a tension on said fusible link and a pressure on said valve against said seat.

8. A water discharge head for a fire extinguishsystem having a water supply pipe located above a ceiling which has an opening into which the device extends comprising, in combination, an upright tubular member having a water inlet at its upper end, a disk-like element extending laterally from the lower end of said tubular member and having a discharge opening therein, said disk-like element having a pair of diametrically opposite depending portions provided with opposed cross grooves forming ledges, a valve for controlling the flow of water through said tubular member, means forming a valve seat against which the valve is normally engaged to prevent flow through said member, a rod secured at one end to said valve and normally positioned in said tubular member, means on said rod for guiding the rod during movement longitudinally of said member, a delecting device secured to the lower end of said rod and positioned close to the surface of said disk-like element when said valve engages said seat, means for holding said valve in engagement with said seat comprising a cross bar positioned between said depending portions of the disk-like element, a pair of levers positioned under said cross bar with their outer ends resting on said ledges and their inner ends extending toward each other for the reception of a fusible link and a screw-threaded device extending through said cross bar and into engagement with said deflecting device adjustable to take up the play between the parts and place a tension on said fusible link and a pressure on said valve against said seat, and means for securing said tubular member to said water supply pipe so that the lower end of the discharge head is substantially flush with the lower surface of the ceiling.

9. A water discharge head for a fire extinguishing system having a water supply pipe located above a ceiling which has an opening into which the device extends comprising, in combination, an upright tubular member adapted at its inlet end for connection with a water supply and having a discharge opening at its lower end positioned above the lower surface of the ceiling, a valve for controlling the flow of water through said tubular member, means forming e valve seat against which the valve is normally engaged to prevent flow through said member, a rod secured at one end to said valve and normally positioned in said tubular member, means on said rod for guiding the rod during movement longitudinally of said member, a deecting device secured to the lower end of said rod and positioned close to the lower end of said tubular member and above the lower surface of the ceiling when said valve engages said seat, means for holding said valve in engagement with said seat including a fusible link, and means for securing said tubular member to said water supply pipe so that the lower end of the discharge head is substantially flush with the lower surface of the ceiling.

l0. A water discharge head for tinguishing system comprising, in combination, a tubular member adapted at its upper end for connection to a water supply system and having at its lower end an annular portion extending outwardly therefrom and an annular portion exa fire exlil) tending inwardly therefrom to define a discharge opening and a valve seat surrounding the edge of said opening, a valve member for closing said discharge opening, a deiiector device secured to said valve member, means for holding said valve member seated including a fusible element, and means for supporting said valve member and deector device in a lowered position upon fusing of the fusible element comprising a plurality of rods secured at their lower ends to said valve member and extending upwardly into said tubular member and an annular member secured to the upper ends of said rods and adapted, when the valve is unseated, to descend and engage the annular portion extending inwardly from said tubular member.

1l. A water discharge head for a fire extinguishing system having a water supply pipe located above a ceiling which has an opening into which the device extends comprising, in combination, a vertical tubular member positioned above the ceiling having means forming a valve seat, a valve engageable with said seat to prevent the flow of water through said tubular member, a stem for said valve, a deilectorelement movable with said valve and stern, means including a fusible link for maintaining said valve seated and said deilector in an elevated position above the lower surface of the ceiling, means for holding said deflector element in a lowered position below the'ceiling when the link is fused, means for securing said tubular member to said water supply pipe so that the lower end of the discharge head is substantially flush with the lower surface of the ceiling when the deflector is in its elevated position, and means projecting from the lower end of said tubular member engageable by a tool smaller in diameter than the ceiling opening for installing the device through said ceiling opening.

12. A water discharge head for a fire extinguishing system having a water supply pipe located above a ceiling which has an opening into which the device extends comprising, in combination, a tubular member adapted at one end for connection to the water supply pipe and having an enlarged portion at its other end positioned within and fitting snugly in said ceiling opening, means including a valve for preventing the i'low of water through said tubular member, a stem for said valve, a deector `element movable with said stem, means including a fusible link for maintaining said valve seated and said deflector in an elevated position above the lower surface of the ceiling, and means on the lower end of said tubular member engageable by a tool insertable through said ceiling opening for installing the device. f'

13. A water discharge head for a fire extinguishing system comprising, incombination, a tubular member adapted at its upper end for connection to a water supply system and having at its lower end an annular portion lextending outwardly therefrom and an annular portion ex'- tending inwardly therefrom to define a discharge.

opening and a valve seat surrounding the edge of said opening, a valve member for closing said discharge opening, a deflector device secured to said valve member, means for holding said valve member seated and said deilector device adjacent the discharge opening including a fusible element, and means for supporting said valve member and deflector device in a lowered position upon fusing of .the fusible elementA comprising a plurality of slender rods 'secured at their lower ends to said valve member and extending upwardly into said tubular member and an annular member secured to the upper ends of said rods, said annular member having an upper surface beveled inwardly and downwardly to facilitate movement of water through the tubular member and being adapted, when the valve is unseated. to descend and engage the annular portion extending inwardly from the tubular member.

14. A water discharge head for a re extinguishing system having a water supply pipe located above a ceiling which has an opening into which the device extends comprising, in combination, a tubular member having means forming a valve seat, a valve engageable with said seat to prevent the flow of water through the tubular member, a stem for said valve, a deilector element movable with said valve and stem, means including a fusible link for maintaining said valve seated and said deflector in an elevated position, means for holding said deiiector element in a lowered position when the link is fused, means for securing said tubular member to said water supply pipe so that the lower end of the discharge head is substantially ush with the lower surface of the ceiling when the deflector is in its elevated position, and 'a tubular shield adapted to be secured to the lower end of said tubular member and having an outwardly extending flange adapted to overlap the edge of the ceiling opening, said tubular shield having resilient means thereon for engaging the tubular member operable to pull the shield upwardly against the ceiling and compensate for variations in the location of the tubular member with respect to the ceiling.

l5. A water discharge head for a fire extinguishing system comprising, in combination,

an upright tubular member adapted at its inlet 40 end for connection with a water supply pipe, means on the lower end of said tubular member extending outwardly and downwardly therefrom, a valve for controlling the flow of water through said tubular member, a water deilector device, means securing said defiector device` to move with said valve, means for holding said valve in its closed position comprising a cross bar landa fusible element positioned below the lower end of said tubular member and within said means extending outwardly and downwardly from the tubular member so as to be protected by sald last mentioned means.

16. A Water discharge head for a i'lre extinguishing system having a water supply pipe located above a ceiling which has an opening into which the device extends comprising, in combination, a tubular member having integral means forming a valve seat, a valve engageable with said seat to prevent the flow of water o through said tubular member, a deilector element means including a fusible link for maintaining said valve seated and said deilector element in an elevated position, and means for holding said deilector element in a lowered position with respect to said tubular member when the link is fused, said tubular member being constructed with an integral extension on its inlet end adapted to be cut off and threaded so that when Vthe threaded portion is secured to the water supply pipe and-the deectoris in its elevated position the l'ower end of the discharge head is substantially flush with and the deflector ls above the lower surface of the ceiling.

BETH L. WINSLOW.- n

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