US2364059A - Spray device - Google Patents

Description

Dec. 5, 1944- F. DELFCEETAL SPRAY DEVICE Filed May 27, 1942 INVENTORS [mm/9a E 051/215 BY Jim/v M W/u/mna ATTORNE in each of the views, andin which'.

Patented Dec. 19,44

' SPRAYDEVICE I Edward F.

Deuce andJolm M. Williams, Brooklyn, N. Y. i

Application May 27, 1942, Serial No. 444,757,

6 Claims. (01. 299-93) This invention relates to spray devices and more particularly devices of this kind commonly referred to'as fire extinguishers and the-object ofthe invention is to provide a device of this kind employing a sealed dischargeend with a crank operating the device automatically releasing the seal in the rotation of the crank, and further in so constructing the walls of the tubular casing or cylinder as to provide means for insulating as well as reinfOlcing the same, in addition to reducing the weight of the entire device and also providing a gripping surface on the cylinder facilitating a more firm grip thereon. The novel features of theinventionwill be best understood from the following description when taken togetherwith the accompanying drawing, in which certain embodiments of the invention are disclosed, and in whichthe separate parts are designated bysuitable reference characters Fig. 1 is a sideand sectional view of a device made according to the invention, and

Fig; 2 is a plan view of the device, as seen in Fig. 1, with part of the construction broken away and in section.

crank employed to class describedhaving means normally sealing the discharge endthereof with means for automatically releasing the seal upon operating the discharge the fluid from the device. i I i i i In the drawing I0 represents the main cylinder, l

of the devicewhich is in theform of a relatively thin walled tube jacketed by an outer corrugated tube I| spaced from the tube II), which space is preferably filled with a suitable insulation I2 to insulate the contents of thexspray devicefrom high temperatures, and also to form a cushion;

,In-theconstruction shown, thetube I0 is of greater length than the tube II forming upper and lower terminal ends I3 and ,with. which topand bottom caps I5 and I6 are coupled. The cap I5 may be permanently secured in: position by welding,l,brazing or otherwise; whereas the cap I5 is detachably mounted in position to faciliother purposes.

In spraydevices and ,particularlythose come monly referred to as fire extinguishers, ithas been customary to employ rather complicated mechanismscontrolling the operation of the devices, and as arule, most of the devices have been quite heavyin comparison with the size thereof and, furthermore, no precautions have been taken to reinforce the cylinders of the devicesand further to insulate the devices, particularly where -the same are exposed to high temperatures such for example, as hanging indirect sunlight, and

still further, devices of this kind have usually employed smooth cylinders, handling of which have beendiflicult. g It is the purpose of our invention to first construct a device of outstanding simplicity,,thus materialy reducing themanufacturing cost: fur ther to lighten the structure as much as possible by using two spaced thinwall tubes, the inner of which forms the cylinder proper and the outer a reinforcing wall, which also provides, by virtue of the corrugations therein, a gripping surface which facilitates the firmer gripping of the device; still further the spacing of the walls facilitates the insertion of an insulating medium between the wallsto protectthe contents of; the

device from excessive temperatures to which. the

'same may be exposed. It is a still further feature of our inventiontoprovide a device of the The cap I6 has a depressed annular wall I1, in I one sectionof whichisarranged a filling plug I8, by means of which the cylinder I0 may be filled with the desired chemical or fluid to be used in the device. Centrally of the inner surface of thecap I6 is a socket I9 for supporting the lower end of atubular screw shaft 20, the lowerendof the shaft having a number of apertures, opening into the bore 22 of the shaft sothat fluid can pass upwardly through the shaft vand be discharged through the nozzle end 23 thereof.

The cap I5 is substantially in the form of an inverted cup, the walls being contracted toward the outer, closed end 24 of the cup. This end has 1 an aperture 25 therein, through which the nozzle 23 protrudes beyond the outer surface ofthe wall 24. Adjacent the aperture. Z5;is avent aperture26. a H; w At-oneside of the cap I 5 is an enlarged portion, in which is formed aradialbore ortpassage 21, directly, abovewhich is a large rectangular openinglor slit 28. In the boretfl is arranged bush+ ings29spaced apart bya packing 30 andin these I I I bushingsisa pin or shaft iiI to the inner end of which is secured a beveled pinion 32 and-mounted onthe outer square end 33 is acrank 34 secured in positionby a screw 35. The crank 34 has at its free end a knob orfingerpiece 36,byW ich the same maybe "rotated and projectingjfromhthe pivot end of the crank is an, arm 31 havingon the inner lsurfacej thereof cams38 .adapted to cooperatewith an outwardly projectingfinger 33 on a pawl 40. k

repair, cleaning or The pawl 40 is arranged in the opening 38 and is pivoted as seen at 4!. A spring 42 is employed to normallyextend the pin end 39 from the cap to be engaged by the cam 38 and also to hold the pawl in engagement with a catch 43 on a cover 44.

The cover has a yoked end 45 pivoted to the cap, as seen at 4B and on the pivot 46 is a spring 41 which engages the cover and the wall 24 so that when the cover islreleased hythe pawl 4.0. the spring 41 will automatically move the cover into fullyopened position out of the path of the discharge nozzle 23.

Supported centrally of the cover 44 is a thimblefshaped cup 48, in which is arranged a sealing.

pad or disc 49 seated upon the end-oi the nozzle 23 by a spring 50, so that the end of the nozzle is sealed when the cover is in closed position.

The cup 48 also supports a springsealing ringer discharge :the contents :of the cylinder :in lthe --movement of theplunger in theldirection of the bottom cap lfi. 3

The :unit "53 comprises a sleeve portion .54 threaded -to engage the screw threads :55 of the shaft 11210, :the sleeve including an enlarged cas ing portion 56 with which is coupled apacking- :gland supporting sleeve 5! ands-this sleeve also serves to support the cup 58-of the plunger in.-

cluding the reinforcing inner and outer *facings -59 and 60 therefor. ilhe innerfacing *ha's angularly extending spring fingers "61 which serve *to firmly support the angular flange portion 62 of the cup 58 *in engagement with :t'he wall of the cylinder whereas the facing -60 has spri g members 63 which serve to backup the cup v58.

The sleeve 51 forms ajseatfor a coil spring "64 which bears against ;a number of packing discs or rings 65 whicheollectively form-the packing- ;glandlbetween the ,pi'stoniand plunger 53 and the shaft 20, The cup part 56 and the sleeve part .5! have cooperating flanges 66 and fil which form the support for the cup shaped piston 53. It will thus ;be seen that the two parts 156 and '51 collectively formthe complete assemblage of the piston or -p1ungerunit*53,

It will "be understood that when the spray .device is in position I on'use, the piston or plunger 35 will be in its raised position in the cylinder inder is grasped "in the left hand and ,held "by this hand near the cap end "I and the remainder of "the' cylinder is placed between the arm and the body of the operator; the right hand grasps the handle 36 of the crank and "the crank *is rotated. In a partial rotation of the crank, one of the-cams 38 will engage the finger 39-t0 trip the pawl 30; thus releasing the cover 44 allowing it to move' into open position. Continued rotation of the crank will gradually feed the plunger 53 -downwardlyzin the cylinder and discharge the fluid through the nozzle 23. This operation will be continuedurrtil the device has-served its-purpose, after which the cover may be swung into closed position again sealing the nozzle and this is done with the handle or crank in the normal position.

It will be apparent that spray devices of this kind may be made in many sizes, that is to say, from handling a small quantity of fluid to a relatively large quantity thereof and where excessive amounts of fluid are used and the device becomes quite heavy, additional supporting straps may be employed as with othersplay devices commonly known in the art. Inusing the-device :as a fire extinguisher and for emergency uses, relatively small units are constructed from a half quart to two quarts of fluid. A more or less standard sizeior such devices has been the conventional oneguart size.

However, by reason of the lightness in construction and economy in construction of our device .a vquart and 'a half size can be adapted as a standard. This will add fifty per cent more fluid to care for greater degreesof a fire emergency without adding materially to the total weight of the complete device.

In :many insulationsof devices under consideraqtion, particularly when used ,in .motor vehicles, asoline stations and other places where theldevices ma come in direct contact with sunrays or exposed to the high temperatures thatimay pro vai'l .in.a-room or compartment,1these hightemperatures :have proved to beiniurious to the devicezor the contents thereof. EIo :obviate zthis, at least to a major degree, we employ the insulated wall-structure whioh enable such devices to withstand much higher temperatures thanhave-hcrctofore been possible, without anyinjurious-effect upon the device. ;;It .will also be apparent --.that the fiornugated outer wall structure, in conjunctionwith the insulating and cushioning material,

will guard toa degreeagainst the denting of the syrups and the like.

Having fully described our invention, .v'vhat we claim asnew and desire .to secure byLetters Eatent, is: l r

1. Aspray device comprising an elongated cylinder, a cap closing one end .of the cylinder, at screw'shaft arranged longitudinally of the axis of said cylinder, .a plunger in threaded engage ment with saidshaftand movable longitudinally of the cylinder intherotation of said shaft, means comprising ,a crank mounted in said cap for r0- ,tating said .shaft, said shaft being tubular .in

form and having a nozzle discharge opening through said cap, a cover pivoted to the cap and engaging the nozzle discharge for sealing said discharge, a spring for automatically-moving the cover into open ;p0sition,a pawl device on the cap and operatively engaging said cover to sup port the cover in closedposition' against the action of said spring, means on said crank operatively engaging the pawldevice to release said cover automaticallyupon rotation of the crank to discharge the contents of said cylinder, said cylinder comprising an inner straight wall tube and an outer tube having terminal ends projecting beyond the-outer-tube, said-cap engaging one ofsaid terminal ends, and another closure cap engaging the other terminalend.

:2. A spray device comprising an elongated vey linder, a leap closing one lendiwof the cylinder, is.

screw shaft arranged longitudinally of the axis of said cylinder, a plunger in threaded engagement with said shaft and movable longitudinally of the cylinder in the rotation of said shaft, means comprising a crankmountedin said cap for rotating said shaft, said shaft being tubular in form and having a nozzle discharge opening through said cap, a cover pivoted to the cap and engaging the shaft, tensional means supporting the packings in engagement with said shaft, and yieldable i means supporting the periphery of the plunger in firm engagement with the cylinder wall.

upon rotation of the crank to discharge the contents of said cylinder, said cylinder comprising an inner straight wall tube and an outer tube having corrugations extending longitudinally, said inner tube having terminal ends projecting beyond the outer tube, said cap engaging one of said terminal ends, another closure cap engaging theother terminal end, a body of insulating material between said inner and outer tubes, and said caps abutting the outer tubes and sealing said insulating material.

4. In a fire extinguisher comprising an elongated cylinder having caps at opposite ends of i the cylinder and means in one of the caps and operating in the cylinder for manually discharging the contents of said cylinder, said cylinder comprising an inner straight walled tube and an outer tube having corrugations extending longitudinally thereof, said inner tube having terminal ends projecting beyond both ends of the outer tube, and said caps being supported on the terminal ends of the inner tube and in abutting relation to the ends of said outer tube.

5. In a fire extinguisher comprising an elongated cylinder having caps at opposite ends of the cylinder and means in one of the caps and operating in the cylinder for manually discharging the contents of said cylinder, said cylinder comv prising an inner straight walled tube and an outer 3. A spray device comprising an elongated cyf linder, a cap closing one end of the cylinder, a screw shaft arranged longitudinally of the axis ofsaid cylinder, a plunger in threaded engagement with said shaft and movable longitudinally of the cylinder in the rotation of said shaft,

means comprising a crank mounted in saidcap for rotating said shaft, said shaft being tubular in form and having a nozzle discharge opening through said cap, a cover pivoted tothe cap and engaging the nozzle discharge for sealing said discharge, a spring forautomatically moving the cover into open position a pawl device on the cap and operatively engaging said cover to support the cover in, closed position against the action of said spring, means on said crank operatlvelyengaging the pawl device to release said cover automatically upon rotation of the crank to discharge the contents of saidcylinder, a plurality of packings on the plunger encircling the screw tube having corrugations extending longitudinally thereof, said inner tube having terminal ends projecting beyond both ends of the outer tube, said caps being supported on the terminal ends of the inner tube and in abutting relation to the ends of said outer tube, and a body of insulating material arranged between and spacing said inner and outer tubes. i i

6. In a fire extinguisher comprising an elongated cylinder having a controlled discharge at one end thereof, a screw shaft extending longitudinally of the casing with means at the first named end of the casing for manually rotating said shaft, a plunger having a cup shaped part in threaded engagement with said shaft, a plurality of packing discs in said part and around said shaft, means coupled with said part for tensionally supporting the discs in engagement with the shaft, and tensional means on the plunger for supporting the periphery thereof in firm engagement with the wall of said cylinder

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