US1935687A - Spraying device - Google Patents

Description

P. L. WILBUR SPRAYING DEVICE Nov. 21, 1933.

Filed June 4, 1950 2 Sheets-Sheet 1 P. L. WILBUR SPRAYING DEVICE Nov. 21, 1933.

Filed June 4, 1930 2 Sheets-Sheet 2 Patented Nov. 21, 1933 ii STATS SPRAYING DEVICE Peter L. Wilbur, Tuckahoe, N. Y., assigner to Wil-X-MFG Corporation, a corporation ofV New York Application June 4, 1930. Serial No. 459,157

19 Claims.

This inventionrelates to spraying devices which may be used as a fire extinguisher or a sprayer for insecticides in which a stream of liquid is ejected from a container or reservoir by pressure, such as an air pressure applied to the liquid in the container or by withdrawing and discharging the liquid from the container by a pump, and it is a primary object of the invention to provide a device of this character wherein the pump carries a nozzle and is adjustably mounted upon the exterior with the pump and nozzle in communication with the container, which pump in the operative position thereof is adapted to extend laterally of the container, and in the inoperative position thereof to be folded to lie in contiguous relation to the container to form a compact structure to be readily stored and transported.

It is another object oi the invention to provide a sprayingv device of this character wherein an air pump is utilized to inject and create air pressure in the container to serve as the expelling force for the liquid from the container, the pump and nozzle being connected with the container through the pump mounting on the container with a spring influenced valve in the pump connection normally urged to closing position, and a spring influenced valve in the nozzle connection operated by the movement of thepivoted pump.

A further object of thev invention is the provision of means automatically operative when the pump is moved to inoperative vposition to move the valve in the connection ofthe nozzle and container to closed position and retain it inV such position. f

Another object is to provide positively operated means to shut oir the pump from the container.

Other objects and advantages will hereinafter appear.

In the drawings accompanying and forming a part of this specification I haveshown an embodiment of the invention in which Figure 1 is a side elevation with the container in section, the pump being shown iniull lines in inoperative position and in operative position in dotted lines.

Figure 2 is a view, on an enlarged'scale, looking at the top of Figure 1.

Figure 3 is a partial longitudinal sectional view of the upper portion of the device taken substantially on the line 3--3 of Figure 2 looking in the direction of the arrows with one of the trunnion supports removed to show the arrangement of the control valve `for the discharge outlet from the container and the means to move and retain it in closed position in the inoperative position of the pump. i

Figure 4 is a sectional view, on an enlarged scale, jof the upper portion of the device, the section being taken on line 4.--4 or Figure 2 looking in the direction of the arrows to show the mounting of the pump upon the container and of the connection of the pump with the container and of the outlet means for the liquid from the container with nozzie through said mounting.

Figure 5 is an enlargedsectional view of the connection of the pump with the container the section being taken on the line 5-5 of Figure 2 looking in the direction of the arrows.

Figure 6 is a side elevation of the pump, partly in section, to show the piston arrangement; and

Figure '7 is a detail view of the means to retain the pump piston in vits innermost position and valve mechanism in closing position to shut oiT the container fromvthe pump.

The embodiment of the invention shown in the drawings comprises` a reservoir or container to contain the liquid to be discharged and in the use'of the device as a nre extinguisher preferably comprising carbon tetrachloride. The body 8 of said container is substantially of semi-circular form in cross section with the wall opposite to the curved wall bulged inwardly, as shown at 9 in Figure 2, to -form a recess in the wall extending longitudinally thereof and has heads 10, ll connected to the opposite ends. The container is arranged with a filler opening in one end or the top 10 having a removable closure cap, as at l2, and also has fixed at said end a member 13 for the connection or a looped strap 1li for engagement over the shoulder or" a person using theA device to readily transport the same and permit of the use of both hands in manipulating the pump and directing the discharged stream. A pair of parallel and spaced lugs 15 extend outwardly from the head 10 with the inner surfaces extending substantially in the plane of the opposite sides ofthe inwardly bulged portionv 9 to constitute bearing members whereby to pivotally support and adjustably mount a pump, in the present instance ofthe air pressure type, upon the container on an axis extending transversely of the container, and to be adjusted to extend longitudinally of and in contiguous relation to the inwardly bulged portion 9 in the inoperative position of the pump, and to extend transversely and laterally of the container in the operative position of the pump. y

The pump (Figure 6) is of the single acting type, comprising a cylinder 16 having heads 17, V18 xed at opposite ends, the head 18 having an air outlet passage 19 the inlet of which is arlll) ranged centrally of the head and communicating with a portion 19a extending transversely of the head into a laterally extending part of the head and formed by drilling laterally into said extended part and closing the outer end by a plug 19h, and the outlet of the passage being through the inner Surface of said head extension, as at 19C. A rod 20is slidably mounted in the head 17 and has a hand grip 21 xed to the outer end. A piston head 22 of less diameter than the cylinder is slidably mounted upon a tubular portion 23 at the inner end of the rod to have movement between an abutment 24 fixed to the ro-d at the inner end of the tubular portion and an abutment 25 in the form of a cap threaded onto and closing the outer end of the tubular portion of the rod. A perforated disk 26 of iiexible material is engaged upon the reducedrear end of the piston and is clamped to the shoulder formed by the reduced piston end by a nut 27 threaded onto the reduced piston end with an interposed .vasher 28, the disk being of a diameter to extend about the piston and yieldingly urged into contact with the cylinder Wall by a coiled spring engaged in an annular recess in the piston head, as at 29. The tubular portion has a port 30 at the inner end of the piston and a port 31 at the outer Yside of the piston. The fit of the piston rod in the cylinder head 1'7 is sufficiently loose to permit of entrance of air into ,they cylinder, and as the piston is moved outward there willbe a slight free movement of the piston due to the frictional contact `of the piston disk 26 with the cylinder wall until the piston head engages the abutment 25 thereby opening the port 30 to the cylinder at the rear of the piston and the forward port 31 will be open tothe cylinder in front of the piston through a transverse channel l32 inthe outer end of the piston, thereby opening thecylinder at the rear of the piston to the cylinder in front ofv the piston through theI port 30, tubular portion of the piston rod, port 31 and "channel 32. -As the piston rod is moved inward the piston will close the port 30 and thereby eject the air in front of the piston through the port 19 in cylinder head 18. A spring 33 is coiled aboutthe piston rod in the rear of the piston abutment 24 to serve as a yielding buffer to engage the head 17 when the rod is moved outward to its full extent.

To pivotally mount the pump upon the bearing lugs 15 of the container head 10 the pump is secured in a. recess portion 34 of arcuate shape in cross section of a supporting member 35 having laterally and oppes'itely extending trunnions 36, 36' for engagement in a correspondingly formed bearing surface in the outer ends of the lugs 15 and secured therein by caps 37 engaged over the'trunnions and secured to the lugs by" screws 38, the trunnions being of a length to extend beyond the outer sides of the lugs. The pump supporting member 35 has a pair offright angle passages 39, 40 therethrough, the one passage 39 having an inlet axially through the'trunnion 36 and an outlet through the front of the supporting member 35, with one end of a tube 41 engaging in the outlet of said passage and extending parallelly'with the pump cylinder the opposite end of which tube is in communication through a port in the laterally extended portion of thercylinder head 13 with a nozzle 42. Y

The passage 39, tube 41 and nozzle 42 constitute a passageway for the discharge of the liquid from the container. The passageway is operatively connected with discharge outlet means from the container comprising a tube 43 (Figures 1, 3 and 4) extending adjacent to the bottom of and opening to the container, the opposite end thereof being connected in liquid and air tight communication with a chamber in a boss 44 extending inwardly from the container end 10. The chamber in boss 44 is connected with the passage 39 through the trunnion 36 by atube 45 connected at one end, as at 46, with the chamber 44 and which extends to the exterior of the container through the smaller end ci a conical tubular boss 47, extending inwardly from the container end 10, and also through a closure plate 48 at the outer end of the boss, the tube being preferably soldered in place. The outer end of tube 45 is connected to a bore in a nipple 49, said nipple being connected with the pump support through trunnion 36 by a union coupling comprising a plug 50 having a flange at one end and extending through an opening in a cap 51 with the ange at the inside of the cap, andthe plug having a passage therethrough in communication with the passage at 39 the outer end of trunnion 36 with an interposed packing washer, as shown at 52 in Figure 4, the cap being threaded onto the trunnion 36, thus permitting the coupling plug 50 to be held in liquid tight connectionwith the end of the trunnion 36. The coupling lplug 59 is fixed inv the nipple 49 and has a right angle passage 39 therethrough constituting a continuation of the passage 39 whereby the latter is placed in communication with the tube 45.

The air outlet 19c of the pump is connected in y communication with the container by a tube 54 extending parallel with thepump cylinder and the discharge tube 41, said tube 54 being connected at one end with'the outlet 19c of the passage 19 in the cylinder-head 18 and at the opposite end with the inlet to a passage 40 which extends through the pump supporting trunnion v36. The passage 49 is connected with the container through an air inlet tube 56 which extends into the container through the reduced end or" a conical boss 57 lprojecting inwardly from the container end l0 and througha closure plate 57 at the outer end of said boss. The inlet end of the tube 56 is connected with the passage 40 by a duct 55 in the nipple 58 and a communicating duct in the plug 59. The plug 59 is fixedly vsecured in the nipple 53 and is connected to the trunnion 36' by means of a union coupling constituted by: the plug 59 and the cap 60. The inner end of the plug 59 has an enlarged flange which together with the packing material 61 forms a yliquid-tight Vconnection between the trunnion 36 and the plug 59 when the cap 60 is screwed up tightly against the trunnion support 37. The outlet end of tube 56 is connected with a chamber formed in a boss 62 extending inwardly from the container end and opening outwardly therefrom, the opening being closed by a plug 63 threaded into the opening. The chamber in the boss-62 communicates with the interior of the container through the ports 64 in the base of the boss 62. The outlet of the tube is normally closed by a valve 65 having a stem whereby it is slidably mounted in the closure plug 63, the valve being yieldingly urged to closing position by a spring 66.

In the normal inoperative position of the device the pump is adjusted to extend longitudinally of and in contiguous relation to the container within the inwardly'bulged portion 9, as shown in Figure 1. As the pump is adjusted to said position the valve mechanism is automatically and positively actuated to shut orf the container from the atmosphere through the connection of the discharge nozzle with the container. This shut off valve mechanism (Figure 3) comprises a valve having a cup shaped head 67 arranged in the chamber of boss 44, the head being carried by a stem 68 and whereby it is slidably mounted in a closure plug 69 threaded into the outer end of the boss and which plug serves to form an enclosed chamber in the boss,\the valve stem extending through said plug to the exterior of the container. The valve 'is adapted to seat against the end of the outlet tube 43 extending into the chamber of boss 44 and carries a'disk of suitable packing material '70 to seal the end of the tube, the valve being normally urged `away from the tube by a spring 71 coiled about the tube and interposed between the valve and end wall of the chamber in boss 44. As the pump is moved to position to extend longitudinally of the container the valve is automatically and positively seated against the end of the tube against the tension of spring 71 and retained in said position by an actuator in the form of a plate 72 bent rearwardly upon itself to form a loop or eye at the bend, as at '73, for engagement and rotatable mounting on a pin 74 mounted at the ends in and extending between the chamber mounting lugs 15, the one end of the plate extending above the end of the valve stem 68 and the opposite end '72 extending laterally fromsaid valve stem engaging end and formed to arcuate shape in longitudinal section for engagement of a cam 75 carried by or integral with the pump supporting member 35. As the pump is adjusted to position to extend transversely and laterally of the container the cam is moved to the dotted lineposition and releases the valve actuator plate, which is adapted to be moved on the rod 74 to the dotted line position by the valve stem due to the moving of the valve away fromv the end of the tube 43 by the spring '71 and the pressure of the liquid. The end rI2 of the actuator plate is also adapted to co-operate with the cam '75 to releasably retain the pump in inoperative position. When the pump is adjusted to operative position to extend laterally ofY the container it is releasablyretained in such p0- sition by yielding detent means comprising a resilient wire 76 extending transversely above the bearing caps 3'7 and between the' pump mounting lugs 15 and secured in position by the bearing cap securing screws 38 engaging looped ends of the. wire, as shown in Figures 2 and 4. The wire is adapted to yieldingly engage a recess 7'1 (Figure 6) extending transversely of the rear of the pump supporting member 35. As the pump is moved to operative position the end of the outer wall of the recess, which is rounded, will engage with and flex the wire 76 and as said Wall rides over the WireY the wire will spring into the recess 77.

The fire extinguishing liquid, carbon tetrachloride, is a Vhighly volatile liquid and to prevent any fumes or vapors thereof which might pass the air inlet valve65 from entering the pump cylinder in the inoperative condition of the device and 'While it is stored'means are provided to positively shut 01T the container from the pump cylinder. This means comprises a valve 78 (Figure 6) having a stem 79 whereby it is slidablymounted in a perforation in the abutment and closure cap 25 `for the tubular end of the piston rod 20 and normally urged outwardV by a spring 80, the

outward movement being limited by an enlargement at the inner' end of the valve stem comprising a separate element connected to the end of the valve stem. :The valve 78 carries a disk of suitable sealing material adapted to be seated against a seat formed about the inlet to the air outlet passage 19 Within the cylinder head 18 when the piston rod is in its innermost position. To releasably secure the piston in its innermost position with the valve closing the outlet 19 the cylinder head 17 vhas a reduced extended portion with ears 81 extended diametrically opposite from the outer end, and the end of the hand grip 21 has a recess 82 inthe end with a pin 83 extended transversely of a peripheral portion of the recess. To lock the piston rod in its innermost position it is adjusted so that the pin 83 will extend parallel with and at one side of the ears 81, the rod is then moved inward seating the valve '78 against the seat about the outlet 19 when the rod is rotated to engage the pinr83 below an ear 81.

It will be obvious that various modifications may be made in construction and arrangement of parts without departing from the scope of the invention, and that portions of the invention may be used without others and come within the scope of the invention.

Having thus described'my invention, I claim:

1. In a. spraying device, a container, a` pump carrying a nozzle, a pump support having laterally and oppositely extending tubular trunnions, lugs on the end of the container for the pivotal engagement of the trunnions of the pump support to rotatably support and permit of adjustment of the pump to extend longitudinally of and contiguous to the container or laterally thereof, and means to connect the pump and nozzle through the pump trunnions and lugs with the container.

2. In a spraying device, a liquid carrying container having liquid outlet means and air inlet means, a reciprocatory piston air pump carrying a nozzle at one end, means to pivotally support the pump at the other end on the container said means being constructed and arranged to adjust the pump to a position to extend longitudinally of and contiguous to the container or to a position to extend transversely and laterally of the container and means to connect the nozzle with the liquid outlet means and the pump with the air inlet means through the pump supporting means, said connections being maintained in all positions of the pump.

3. In a spraying device as claimed in claim 2, a spring influenced valve in the outlet means, means operative by the pump as it is moved to a position to extend longitudinally of the container to move said valve to and retain it in closing position said means being adapted to release said valve when the pump is moved to a position to extend laterally of the container.

4. Ina spraying device, a liquid carrying container having outlet means and air inlet means, Va reeipro'catory piston air pump having an air outlet at one end and carrying a nozzle at said end, means to pivotally mount the pump at the opposite endY upon the container, said means 4 being constructed and arranged to allow said pump to be adjusted to extend longitudinally of and contiguous to the container or to extend transversely and laterallyA Yor" the container,

means to connect the nozzle in communication with the outlet means from said container and the pump outlet with the air inlet means to the container through the pump mounting means, a valve in the container outlet means normally urged'to open position, means operative by the pump as it is moved to extend longitudinally ofthe container to move said valve to and retain it in closing position and'release said means from the valve when the pump is moved to position to extend laterally of the container, and valve mechanism operative when the piston of the pump is in its innermost position to shut oif. the pump from the air inlet means tothe container.

5. In a spraying device as claimed in claim 2, means operative by the pump as it is moved to position to extend longitudinally of the container to shutoff the container from the atmosphere through the outlet means, and means operative to shut off the air inlet means to the container Ifrom the pump.

Y6. In a spraying device, a liquid carrying con-V tainer having a liquid outlet tube and an air inlet tube extending from the exterior into the container through one end, a reciprocatory piston pump having air `outlet means and carrying a nozzle at 'one vend, a support for the pump having laterally extending tubular trunnions, lugs on the end of the container' having openings in which the trunnions are engaged to pivotally mount the pump uponthe container and allow said pump to be adjusted to extend longitudinally and in contiguous relation to the container or to extend transversely and laterally of the container, means to connect the rone trunnion in communication `with the liquid outlet tube from the container, means'to connect the other trunnion in communication withthe air inlet tube to the container, and means carried by the pump to connect the trunnion to which the liquid outlet tube is connected with the nozzle'and means carried vby the pump 4to connect the trunnion to which the air inlet tube is connected with the Pump. v'

7. A spraying device as claimed in claiml 6, wherein the means to connect the liquid outlet and air inlet tubes with kthe trunnions of the pump support, comprises cylindrical members each having a bore extended in one end and opening through the side` wall and an annular shoulder intermediate the ends, the bored ends being engaged in the trunnion bores', threaded caps engaged on said members at the outer sides of said shoulders Yand threaded to the trunnions, and nipples mounted on said members to which the liquid outlet and air inlet tubes are connected at an angle to said cylindrical members. i

8. A spraying device as claimed in claim 6, wherein the means to connect theV liquid outlety and air inlet tubes with the trunnions of the pump support comprise nipples having bores therein in which the ends of the tubes are engaged, tubular kplugs having a iiange at one end, and perforated caps through the perforations of which the plugs are extended with the flanges at the inner sides of the caps, the saidcaps being threaded onto the ends of the trunnions to connect theV plugs in communication with the passages through the trunnions, said plugs being fixed in the nipples with the passages therethrough in communication with the nipple ports.

9. A spraying device as claimed in claim 6, comprising a chamber associated with the container to whichthe liquid outlet tube is connected, a tube extending from said chamber to and in communication with the container at the end opposite to that at which the pump is mounted, a valve in the chamber to close the inlet of the last mentioned tube to the chamber, and means operative by the pump as it is adjusted to a position longitudinally of the container to close said valve and retain the same in closing position, said means functioning also to release the valve when the pump is moved to a position extending laterallyof the container.

10. A spraying device as claimed in claim 6, comprising achamber associated with the container to vwhich the liquid outlet tube is connected, atube extending from said chamber to and in communication with the container at thel end opposite to that at which the pump is mounted, a valve in the chamber to shut off said last men- -tioned tube from the chamber having a stem to slidably mount the valve, said stem extending to the exterior of the container, and means comprising a cam carried by the pump support, constructed and arranged to co-operate when the pump is moved to extend longitudinally of the container to move said valve to and retain it in closing position.

11. A spraying device as claimed in claim 6, comprising a chamber associated with the container to which the liquid outlet tube connected, a tube extending from said chamber to and in communication with the container at the end opposite tothat at which the pump is mounted, a valve in the chamber to shut oi said last'mentioned tube from the chamber having a stem slidably mounting the Valve and extending to the exterior of the container, an actuator to engage the projecting valve stem, and a cam carried by the pump support, said actuator and cam being constructed `and arranged to co-operate when the pump is moved to extend longitudinally of the container to move said valve to and retain it in closing position and releasably to lock the pump in said position, and to release the cam from the actuator to permit opening the valve when the pump is moved to extend laterally of the container.

12. A spraying device asvclaimed in claim 6, wherein the air outlet means from the pump comprises a port in one end of the pump cylinder connected by a tube with'the trunnion passage to which theair inlet tube to the container is connected, and wherein the nozzle is connected by a tube with the trunnion passage to which the liquid outlet tube from the container is connected, and said tubes extending parallel to each other and the pump.

13. In a spraying device, a liquid carrying container having liquid outlet means and air inlet means, a pump including a cylinder and a reciprocatory piston pivotally mounted upon the container and having an air outlet port from one end of the cylinder, a nozzle carriedat said end of the cylinder, said air outlet through the cylinder and said nozzle being respectively connected in communication with the air inlet means to the container and the liquid outlet means from the container through the pivotal support of the pump, and a valve carried by the piston operative When the piston is in its innermost position to close the outlet port from the pump cylinder and shut oiT the container from the pump.

14. In a spraying device, a liquid carrying container having liquid outlet means and air inlet means, arpump comprising a cylinder pivotally I Connected to the end extended from the cylinder and a tubular portion at the inner end with ports opening to the cylinder at opposite ends of said tubular portion, abutments fixed to the rod at the opposite ends of the tubular portion, a, piston slidably mounted on the rod between the abutments and of a length less than the space between the abutments and adapted to open the cylinder rearward of the piston to the cylinder forward of the piston through the ports as the rod is moved outward from the cylinder and to shut off the cylinder in the rear of the piston from the cylinder in front of the piston when the rod is moved into the cylinder and expel the air forward of the cylinder through the outlet port into the container, a valve slidably carried byV and yeldingly urged outward from the piston to close the outlet port from the cylinder when the piston is in its innermost position and shut off the container from the pump.

15. A liquid spraying device comprising a container, a discharge nozzle therefor, trunnions for pivotally mounting a pump on said container so as to permit the pump to extend longitudinally of` and in contiguous relation with the container in oneV position of the pump and laterally of the container in another position of the pump, an air inlet and a liquid discharge outlet for said container, each having a passageway communicating therewith leading through ports in said trunnions and connecting respectively with the pump and the discharge nozzle, and a valve in said liquid discharge passageway adapted to be opened or closed depending upon the position of said pump.

16. A liquid spraying device comprising a container, trunnions for pivotally mounting a discharge nozzle and a pump on a common axis extending transversely of said container, an air inlet and a liquid discharge outlet for said container, each having a passageway communicating therewith leading through ports in said trunnions and connecting respectively with the pump and the discharge nozzle, and a valve in said liquid discharge passageway adapted to be opened or closed depending upon the position of said pump.

17. A liquid spraying device comprising a. container, trunnions for pivotally mounting a discharge nozzle and a pump on said container, an air inlet and a liquid discharge outlet for said container, each having a passageway communicating therewith leading through ports in said trunnions and connecting respectively with the pump and the discharge nozzle, a valve in said liquid discharge passageway, and means including a cam associated with the trunnion mounting adapted to open said valve when the pump is in one position, and to close said valve when the pump is in another position.

18. A liquid spraying device comprising a container, a discharge nozzle therefor, means for pivotally mounting a pump on the exterior of the container, said means being constructed and arranged to adjust the pump to a position wherein it extends longitudinally of and in contiguous relation with the container or to a position extending laterally of the container, an air inlet to the container for the admission of air discharge from the pump, a liquid outlet from thecontainer, a continuous conduit between the liquid outlet and the discharge nozzle maintained in all positions of the pump, and means for opening the conduit when the pump is in one position, and for closing the conduit when the pump is in another position.

19. A liquid spraying device comprising a container, a discharge nozzle therefor, means for pivotally mounting a pump on the exterior of the container, said means being constructed and arranged to adjust the pump to a position wherein

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