US1927495A - Cleaning apparatus - Google Patents
Cleaning apparatus Download PDFInfo
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- US1927495A US1927495A US596233A US59623332A US1927495A US 1927495 A US1927495 A US 1927495A US 596233 A US596233 A US 596233A US 59623332 A US59623332 A US 59623332A US 1927495 A US1927495 A US 1927495A
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- oil
- water
- tank
- pipe
- water pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S3/00—Vehicle cleaning apparatus not integral with vehicles
- B60S3/04—Vehicle cleaning apparatus not integral with vehicles for exteriors of land vehicles
- B60S3/044—Hand-held cleaning arrangements with liquid or gas distributing means
Definitions
- the cleaninvolves means for heating the oil prior to its 80 ing value of apermanent suspension of arelatively introduction into the water stream whereby an small quantity of oil and hot water under presentirely new and unexpected feeding action resure is set forth in the Durham patent and in sults.
- the heating of the. oil to approximately addition has been proven by years of successful the temperature of the water as contemplated in commercial application.
- the theory of operathis invention apparently causes the oil to aption as set forth in said patent, and as now proach the vapor phase and in so doing, to exhibit understood by those skilled in the art, is based lan entirely novel feeding action.
- the oil be a mineral oil having a paralhn base.
- This invention possesses special advantages in that the expense and trouble of providing and using compressed air may be dispensed with.
- the present invention utilizes the ,discovery that an improved cleaning fluid may be provided and a highly permanent or colloidal suspension of oil in water may be obtained with the elimination of the blast of air formerly employed, if a greater degree of subdivision of the oil is effected during the oil feeding and introducing operation as when the oil is fed into the water line while hot.
- This invention is therefore productive of the highly improved results flowing from a greater vsubdivision of the oil at the point of entering the water stream.
- This invention contemplates the use of hot -oil as distinguished from oil at ordinary temperatures as formerly employed.
- the heating is accomplished by causing the hot water supply pipe to pass through the -oil tank so that as here disclosed, the oil feed to the water line will be at a temperature equal to substantially Whereas it would be expected that the heating of the oil ⁇ would have the utility of lowering the viscosity of the oil, and would serve in winter, to .establish an operation substantially like that of summer, it has been found that an entirely new and unexpected feeding action results.
- the oil entering the water line Vin minute globules such as occasioned when fed from old types of apparatus, it enters as what appears to be a fan-shaped mist of innitesimal individual and separated particles, of size 4almost impercepticle to the naked eye, except collectively.
- the desired colloidal suspension may oe readily obtained with greater ease and less expense and that the inventioneliminates the necessity for using air at the nozzle and therefore is adapted for use in connection with an ordinary nozzle or .mechanical agitating means at the location of the nozzle.
- the apparatus disclosed comprises an oil tank lo'adapted to contain oil which may be introduced through a funnel controlled by the valve 12. fn the filling operation, the tank may be vented at the top by means of a valve 13, which controls a communicating passage between the upper portion of the tank and the external atmosphere.
- the tank is preferably provided with sight gauges 14, arranged to indicate the oil level throughout substantially the entire height of the tank. lt is of course obvious that a single sight gauge may be provided to replace the two sight gauges arranged as here shown.
- a supply of hot water under pressure is provided from any suitable source but which is directed through a pipe 115 which yenters the lower portion of tank 10 as shown in Figure 1.
- a valve 100 for controlling the supply of water.
- Pipe 115 passes to the central portion of the tank and is ⁇ then directed upwardly to a point near the top thereof and thence outwardly and downwardly to connect on the outside of the tank with pipe 15.
- a portionV of the water supplied in the line 15 is directed downwardly through a pipe 16, the passage in which may be controlled by the Vvalve 17, and then through pipes 18 and 19 past the ball check valve 20, and into the base Vof Ythe tank.
- the water thus introduced may be regulated as to quantity and upon entering the tank, acts t-o displace the oil upwardly in a manner to force the oil into the upwardly extending chamber 21, at the top of the tank and downwardly through the centrally disposed oil feed pipe 22.
- the oil feed pipe 22 penetrates the wall of the tank at a suitable location such as at 23 and then extends upwardly through the feed control valve 24, sight gauge 25 and pipe 26, and connects withthe continuation of the main water line designated on Figure 1 as 27, 28 and 29. It will be seen from Figure 3 that the oil enters the sight gauge by passage through a nozzle '50 which is provided with a relatively small orifice 51.
- a oneway spring-pressed valve 30 is provided, the spring 31 of which is adjustable by means of cap Y32, to vary at will, the seating pressure of the valve.
- a pressure gauge k33 is preferably provided in communication with pipe line portion 29 by means of a connecting pipe 34. The lower end of pipe line portion 29 extends to and is connected with the pipe line 35 which leads to a location in convenient proximity to the place.
- invention constitutes an improvement over prior apparatus in that it is productive of a positive oil feed into the water line subject tothe minute control, and a greater sub-divisionof the oil in the water resulting in a more thorough mixture of oil and water in the water line.
- any suitable heating means may be employed for heating the oil prior to its introduction into the water line. This may be accomplished by means associated with the oil tank either in or around said tank or associated with the feed line from said tank so that the oil is brought to the proper elevated temperature.
- the advantage which results from utilizing the heated oil is that the apparatus is converted into what may be considered as a colloidal machine which produces colloidal suspensions of the type herein referred to, adapted for cleaning purposes without the utilization of compressed air or any particular action at the location of the spraying nozzle.
- An apparatus of the character described comprising in combination, a water pipe adapted to be connected at one end to a source of hot water under pressure and at its other end to a spray nozzle, a tank of oil, pipe connections for feeding water from said water pipe to said oil tank and oil from said oil tank to said water pipe and an adjustable check valve in said water pipe located between the points of connection with said water pipe of said water feed and oil. feed pipes, said water pipe passing through said tank of oil whereby to heat said oil to substantially the temperature of said water.
- An apparatus of the character described comprising in combination, ⁇ a water pipe connected at one end, to a source of hot Water, maintained under substantially uniform pressure and at its other end, to a spray nozzle, a tank of oil, having a portion of said water pipe passing therethrough in heat transferring association with said oil, a water feed pipe connecting said water pipe and tank of oil and an oil feed pipe connecting said tank of oil and said water pipe and means in said water pipe for decreasing the water pressure at the connection where the oil enters said water pipe.
- An apparatus for producing a collodial suspension consisting of the following elements, in combination; a Water pipe adapted for connection at one end to a source of hot water under pressure and at its other end to a spray nozzle, a tank containing oil having means associated therewith for heating said oil, a pipe connecting the lower portion of said oil tank, and said water pipe, and a second pipe connecting the top portion of said oil tank and said water pipe and a check valve in said water pipe located between the connections of said two pipes and constructed to permit the liow of liquid in said water pipe in the direction of from said first connecting pipe to said second connecting pipe while preventing now in the reverse direction.
- An apparatus for producing a colloidal suspension consisting of the following elements, in combination; a water pipe adapted for connection at one end to a source of hot water under pressure and at its other end to a spray nozzle, a
- a water pipe adapted for connection at one end to a source of hot water under pressure and at its other end to a spray nozzle, a tank containing oil having means associated therewith for heating said oil, a water feed pipe connecting the lower portion of said oil tank to said water pipe and an oil fed pipe connecting the top portion of said tank and said water pipe and means in said water pipe located between the connections of said two fed pipes for decreasing the water pressure in said water line whereby the pressure at the point of connection of said oil pipe and water feed pipe is less than the pressure in said tank.
- An apparatus for producing a colloidal suspension consisting of the following elements, in combination; a water pipe adapted for connection at one end to a source of hot water under pressure and at its other end to a spray nozzle, a tank containing oil having means associated therewith for heating said oil, a water feed pipe connecting the lower portion of said oil tank to said water pipe and an oil feed pipe connecting the top portion of said tank and said water pipe and means in said water pipe located between the connections of said two feed pipes for decreasing the water pressure in said water line whereby the pressure at the point of connection of said oil pipe and water feed pipe is less than the pressure in said tank, and a relatively small oil feeding orifice at the location of said last named connection.
- An apparatus of the character described for producing a colloidal suspension consisting of the following elements, in combination; a water pipe connected at one end to a source of hot water under pressure and at its other end to a spray nozzle, a tank of oil having means associated therewith, for heating said oil, a water feed pipe connecting said water pipe and tank of oil and an oil feed pipe connecting said tank of oil and said' water pipe and means in said water pipe for decreasing the water pressure at the connection where the oil enters said water pipe.
- An apparatus of the character described for producing a colloidal suspension consisting of the following elements, in combination; a water pipe connected at one end to a source of hot water under pressure, and at its other end to a spray nozzle, a tank of oil having means associated therewith for heating said oil, a water feed pipe connecting said water pipe and tank of oil and an oil feed pipe connecting said tank of oil and said water pipe, means for decreasing the water pressure at the connection where the oil enters said water pipe and'means at said last named connection constituting a relatively vminute oil feeding orifice.
Description
sept. 19, 1933. F M, H|| GER|NK 1,927,495
CLEANING APPRATUS Filed March 2, 1932 Patented Sept. 19, 1933 c -i Unirse STATES PATENT orgies CLEANING APPARATUS FrankM. Hilgerink, Chicago, 111. Application March k2, 1932. Serial No. 596,233
s claims. (o1. 299-84) This invention relatesr to a new and improved effected have been highly successful in commerapparatus for producing a permanent suspension cial applications, particularly in view of the iinof oil in water, in the nature of a colloidal susproved results realized over the prior practice of pension, which has special usefulness and value hand washing and scrubbing and the like. Howas a cleaning iiuid adapted for removing oil, ever, the uses for this type of cleaning process 60 grease and dirt from surfaces such as the mehave so increasedvand the necessity for greater tallicA and other surfaces of locomotives, railway efliciency has become so important the present cars, machinery and the like. invention has been developed as a marked im- The type of oil suspension and the nature of the provement over the processes and apparatus herecleaning fluid produced by the apparatus of this tofore knownand used.
invention will be better understood by referring Accordingly, it is an object of the present into United States Patent No. 1,135,001 issued on vention to provide an apparatus which will pro- April 13th, 1915, to Durham and McGuirk, whereduce a greater sub-division of the oil particles in the Value of a suspension of nely divided oil in the water or at least produce an oil and water particles in water as a cleaning fluid for the pursuspension which is more active in its cleaning 70 poses herein referred to is set forth. The Durham properties than suspensions heretofore provided patent however, provides a method for obtaining and used.
`an oil suspension which involves the feeding of a It is a further object of this invention to prorelatively small quantity of oil into a water line vide an apparatus for feeding predetermined '20 which terminates with a spraying nozzle, and, quantities of oil to a stream of hot waterwhich 75 the use of an air blast at the nozzle for ejectment is effective to cause a greater subdivisionof the oil with the oil and Water miXture. In other words, in water at the point of introductionl than has Durhams process utilizes air under pressure as been possible heretofore. In the accomplishment the means for subdividing the oil and as the means of this object, the apparatus of this invention producing the desired oilsuspension. The cleaninvolves means for heating the oil prior to its 80 ing value of apermanent suspension of arelatively introduction into the water stream whereby an small quantity of oil and hot water under presentirely new and unexpected feeding action resure is set forth in the Durham patent and in sults. The heating of the. oil to approximately addition, has been proven by years of successful the temperature of the water as contemplated in commercial application. The theory of operathis invention apparently causes the oil to aption as set forth in said patent, and as now proach the vapor phase and in so doing, to exhibit understood by those skilled in the art, is based lan entirely novel feeding action. Under these upon what is believed to be an electro-chemical circumstances, the oil, when ejected, from the activity of the oil particles when sub-divided to nozzle of the control valve enters the water stream 3,5 that degree, productive of apermanent or colloidal in the form of a mist which is highly suggestive suspension in water. of the action of a gas. This characteristic be- The impingement, as when directed from a havior is represented in Figure 3 of the drawing.
nozzle under pressure, of such suspension is found The individual oil particles are many times to exhibit a remarkable cleaning effect which is smaller than those obtained by oil feeding mechagreatly in excess of the cleaning effects, acting nisrns of 'priorart cleaning devices of this type.
jointly, provided by, first, the dislodging action Y It should be understood that the feeding mechaof the stream, and secondly, the washing and disnism here described produces a colloidal suspensolving effects of the oil and water. Apparently sion of oil in water without requiring increased the oil particles possess a marked afnity for the subdivision at the ejecting nozzle and therefore particles of foreign matter with the result that it is unecessary for the purpose of securing good O O the washing andV dislodging effects are greatly cleaning results to provide ejecting nozzles of multiplied in producing the unusual and effective special construction. In certain instances howcleaning action. v ever, if desired, it is entirely in keeping with this The commercial application of this -type of disclosure to use a nozzle which may produce @0 cleaning iiuid, up to the present time, has inmechanical agitation or toutilize compressed air volvedthe use of a blast of air, introduced into at the nozzle to agitate and further mix the susthe hotk mixture of oil and water at the location pension just priorto ejectment.
of the nozzle in substantially the manner de- The action here described is obtainable with scribed in the Durham patent above referred to. any of a large number of different types of oils.
This method and apparatus by which it was The only restriction is that `the oil must be a 1.10
vthat of the water.
freely flowing oil and it is preferred although not absolutely necessary, that the oil be a mineral oil having a paralhn base.
This invention possesses special advantages in that the expense and trouble of providing and using compressed air may be dispensed with.
These and other objects not specifically enumerated are contemplated for the present invention as will readily appear to one skilled in the art as the following description proceeds.
The present invention utilizes the ,discovery that an improved cleaning fluid may be provided and a highly permanent or colloidal suspension of oil in water may be obtained with the elimination of the blast of air formerly employed, if a greater degree of subdivision of the oil is effected during the oil feeding and introducing operation as when the oil is fed into the water line while hot.
This invention is therefore productive of the highly improved results flowing from a greater vsubdivision of the oil at the point of entering the water stream. This invention contemplates the use of hot -oil as distinguished from oil at ordinary temperatures as formerly employed.
In the present disclosure, by way of example the heating is accomplished by causing the hot water supply pipe to pass through the -oil tank so that as here disclosed, the oil feed to the water line will be at a temperature equal to substantially Whereas it would be expected that the heating of the oil `would have the utility of lowering the viscosity of the oil, and would serve in winter, to .establish an operation substantially like that of summer, it has been found that an entirely new and unexpected feeding action results. Instead of the oil entering the water line Vin minute globules such as occasioned when fed from old types of apparatus, it enters as what appears to be a fan-shaped mist of innitesimal individual and separated particles, of size 4almost impercepticle to the naked eye, except collectively.
It is estimated that the oil particles are from .one-ftieth to one hundredth the size of the particles formerly obtained. It is believed that this action is attributable to the fact that the oil at the higher temperature has approached the vapor phase and .in this condition of existence is subject to .an entirely different behavior upon entering the water stream.
With this in mind, it will be appreciated that the desired colloidal suspension may oe readily obtained with greater ease and less expense and that the inventioneliminates the necessity for using air at the nozzle and therefore is adapted for use in connection with an ordinary nozzle or .mechanical agitating means at the location of the nozzle.
The .nature of the invention may be more readily understood by referring to the accompanying drawing in whichthat the apparatus disclosed comprises an oil tank lo'adapted to contain oil which may be introduced through a funnel controlled by the valve 12. fn the filling operation, the tank may be vented at the top by means of a valve 13, which controls a communicating passage between the upper portion of the tank and the external atmosphere. The tank is preferably provided with sight gauges 14, arranged to indicate the oil level throughout substantially the entire height of the tank. lt is of course obvious that a single sight gauge may be provided to replace the two sight gauges arranged as here shown.
In connection with the tank, a supply of hot water under pressure is provided from any suitable source but which is directed through a pipe 115 which yenters the lower portion of tank 10 as shown in Figure 1. Just before entering the tank, it is preferable to provide a valve 100 for controlling the supply of water. Pipe 115 passes to the central portion of the tank and is `then directed upwardly to a point near the top thereof and thence outwardly and downwardly to connect on the outside of the tank with pipe 15.
A portionV of the water supplied in the line 15 is directed downwardly through a pipe 16, the passage in which may be controlled by the Vvalve 17, and then through pipes 18 and 19 past the ball check valve 20, and into the base Vof Ythe tank. The water thus introduced may be regulated as to quantity and upon entering the tank, acts t-o displace the oil upwardly in a manner to force the oil into the upwardly extending chamber 21, at the top of the tank and downwardly through the centrally disposed oil feed pipe 22.
vThe oil feed pipe 22 penetrates the wall of the tank at a suitable location such as at 23 and then extends upwardly through the feed control valve 24, sight gauge 25 and pipe 26, and connects withthe continuation of the main water line designated on Figure 1 as 27, 28 and 29. It will be seen from Figure 3 that the oil enters the sight gauge by passage through a nozzle '50 which is provided with a relatively small orifice 51. At the juncture of pipe portions 27 and 28, a oneway spring-pressed valve 30, is provided, the spring 31 of which is adjustable by means of cap Y32, to vary at will, the seating pressure of the valve. A pressure gauge k33 is preferably provided in communication with pipe line portion 29 by means of a connecting pipe 34. The lower end of pipe line portion 29 extends to and is connected with the pipe line 35 which leads to a location in convenient proximity to the place.
where the cleaning operations are performed. Inasmuch as one oil tank and its accompanying oil feeding mechanism is, under ordinary practice, sufficient to supply cleaning fluid to a plurality of nozzles it will be usual to extend pipe line 35 sufficiently to enable the connection of a number of take-off pipes or hoses 36; corresponding to the number of nozzles to be used. As the nozzles will be duplicates of each other in construction and in the manner of connecting with pipe line 35, only one is here shown, which will be understood to be representative of any desired number or types which can be conveniently supplied from one tank and cil feeding mechanism.
invention constitutes an improvement over prior apparatus in that it is productive of a positive oil feed into the water line subject tothe minute control, and a greater sub-divisionof the oil in the water resulting in a more thorough mixture of oil and water in the water line.
Referring now particularly to Figures 2 and 3,
the marked difference in the feeding action will be noted, and from Figure 3, it will be observed that the heating of the oil is productive of a fanlike stream of minute particles which are many times smaller than the globules produced with unheated oil. v
In actual performance, the difference in the particle size is even greater than here represented as the size of the particles in Figure 3 have been exaggerated for the purpose of illustration.
In operation, it is preferable to employ water under pressure at a temperature of approximately between 130 and 160 degrees F. However, the saine advantageous feeding action results with a water and oil temperature as low as 110 to 120 degrees F.
It is to be understood that any suitable heating means may be employed for heating the oil prior to its introduction into the water line. This may be accomplished by means associated with the oil tank either in or around said tank or associated with the feed line from said tank so that the oil is brought to the proper elevated temperature. The advantage which results from utilizing the heated oil is that the apparatus is converted into what may be considered as a colloidal machine which produces colloidal suspensions of the type herein referred to, adapted for cleaning purposes without the utilization of compressed air or any particular action at the location of the spraying nozzle.
I claim:
1. An apparatus of the character described comprising in combination, a water pipe adapted to be connected at one end to a source of hot water under pressure and at its other end to a spray nozzle, a tank of oil, pipe connections for feeding water from said water pipe to said oil tank and oil from said oil tank to said water pipe and an adjustable check valve in said water pipe located between the points of connection with said water pipe of said water feed and oil. feed pipes, said water pipe passing through said tank of oil whereby to heat said oil to substantially the temperature of said water.
2. An apparatus of the character described, comprising in combination, `a water pipe connected at one end, to a source of hot Water, maintained under substantially uniform pressure and at its other end, to a spray nozzle, a tank of oil, having a portion of said water pipe passing therethrough in heat transferring association with said oil, a water feed pipe connecting said water pipe and tank of oil and an oil feed pipe connecting said tank of oil and said water pipe and means in said water pipe for decreasing the water pressure at the connection where the oil enters said water pipe.
3. An apparatus for producing a collodial suspension consisting of the following elements, in combination; a Water pipe adapted for connection at one end to a source of hot water under pressure and at its other end to a spray nozzle, a tank containing oil having means associated therewith for heating said oil, a pipe connecting the lower portion of said oil tank, and said water pipe, and a second pipe connecting the top portion of said oil tank and said water pipe and a check valve in said water pipe located between the connections of said two pipes and constructed to permit the liow of liquid in said water pipe in the direction of from said first connecting pipe to said second connecting pipe while preventing now in the reverse direction.
4. An apparatus for producing a colloidal suspension consisting of the following elements, in combination; a water pipe adapted for connection at one end to a source of hot water under pressure and at its other end to a spray nozzle, a
tank containing oil having means associated` therewith for heating said oil, a water feed pipe connecting the lower portion of said oil tank to said water pipe and an oil feed pipe connecting the top portion of said tank and said water pipe and means in said water pipe located between the connections of -said two feed pipes for decreasing thewater pressure in said water line whereby the pressure at the point of connection of said oil pipe and'water feed pipe is less than the pressure in said tank.
5.-An apparatus for producing a colloidal suspension consisting of the following elements, in combination; a water pipe adapted for connection at one end to a source of hot water under pressure and at its other end to a spray nozzle, a tank containing oil having means associated therewith for heating said oil, a water feed pipe connecting the lower portion of said oil tank to said water pipe and an oil fed pipe connecting the top portion of said tank and said water pipe and means in said water pipe located between the connections of said two fed pipes for decreasing the water pressure in said water line whereby the pressure at the point of connection of said oil pipe and water feed pipe is less than the pressure in said tank.
6. An apparatus for producing a colloidal suspension consisting of the following elements, in combination; a water pipe adapted for connection at one end to a source of hot water under pressure and at its other end to a spray nozzle, a tank containing oil having means associated therewith for heating said oil, a water feed pipe connecting the lower portion of said oil tank to said water pipe and an oil feed pipe connecting the top portion of said tank and said water pipe and means in said water pipe located between the connections of said two feed pipes for decreasing the water pressure in said water line whereby the pressure at the point of connection of said oil pipe and water feed pipe is less than the pressure in said tank, and a relatively small oil feeding orifice at the location of said last named connection.
'7. An apparatus of the character described for producing a colloidal suspension consisting of the following elements, in combination; a water pipe connected at one end to a source of hot water under pressure and at its other end to a spray nozzle, a tank of oil having means associated therewith, for heating said oil, a water feed pipe connecting said water pipe and tank of oil and an oil feed pipe connecting said tank of oil and said' water pipe and means in said water pipe for decreasing the water pressure at the connection where the oil enters said water pipe.
8. An apparatus of the character described for producing a colloidal suspension consisting of the following elements, in combination; a water pipe connected at one end to a source of hot water under pressure, and at its other end to a spray nozzle, a tank of oil having means associated therewith for heating said oil, a water feed pipe connecting said water pipe and tank of oil and an oil feed pipe connecting said tank of oil and said water pipe, means for decreasing the water pressure at the connection where the oil enters said water pipe and'means at said last named connection constituting a relatively vminute oil feeding orifice. v Y
FRANK M. HILGERINK.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US596233A US1927495A (en) | 1932-03-02 | 1932-03-02 | Cleaning apparatus |
US655317A US1927496A (en) | 1932-03-02 | 1933-02-06 | Cleaning process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US596233A US1927495A (en) | 1932-03-02 | 1932-03-02 | Cleaning apparatus |
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US1927495A true US1927495A (en) | 1933-09-19 |
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US596233A Expired - Lifetime US1927495A (en) | 1932-03-02 | 1932-03-02 | Cleaning apparatus |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5310116A (en) * | 1992-12-01 | 1994-05-10 | The Broyhill Company | Drift control enclosure for an agricultural sprayer |
US6622934B1 (en) * | 1998-03-18 | 2003-09-23 | Fuji Photo Film Co., Ltd. | Liquid spraying apparatus |
-
1932
- 1932-03-02 US US596233A patent/US1927495A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5310116A (en) * | 1992-12-01 | 1994-05-10 | The Broyhill Company | Drift control enclosure for an agricultural sprayer |
US5361992A (en) * | 1992-12-01 | 1994-11-08 | Broyhill Craig G | Drift control enclosure for an agricultural sprayer |
US5431341A (en) * | 1992-12-01 | 1995-07-11 | The Broyhill Co. | Drift control enclosure for an agricultural sprayer |
US6622934B1 (en) * | 1998-03-18 | 2003-09-23 | Fuji Photo Film Co., Ltd. | Liquid spraying apparatus |
US20040026531A1 (en) * | 1998-03-18 | 2004-02-12 | Fuji Photo Film Co., Ltd. | Liquid spraying apparatus |
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