US2503042A - Condenser tube cleaner with resilient scraper elements - Google Patents
Condenser tube cleaner with resilient scraper elements Download PDFInfo
- Publication number
- US2503042A US2503042A US678221A US67822146A US2503042A US 2503042 A US2503042 A US 2503042A US 678221 A US678221 A US 678221A US 67822146 A US67822146 A US 67822146A US 2503042 A US2503042 A US 2503042A
- Authority
- US
- United States
- Prior art keywords
- scraper
- arms
- lugs
- tube cleaner
- cleaner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004140 cleaning Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
- B08B9/0553—Cylindrically shaped pigs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/12—Fluid-propelled scrapers, bullets, or like solid bodies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32606—Pivoted
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/53—Split end with laterally movable opposed portions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/70—Interfitted members
- Y10T403/7016—Diametric end slot is joint component
Definitions
- This invention relates to a tool for cleaning tubes or a tube cleaner, and more particularly to a tube cleaner of the type employed to remove deposits from. condenser tubes.
- a tube cleaner of a small size In cleaning condenser tubes, and especially those of small diameter, a tube cleaner of a small size must of necessity be employed, and yet it should be a cheap and simple article to manufacture, speedy and. effective in its cleaning action, and, despite its. smallisizarugged' and durable enough in. its construction to withstand the severe abuse it will encounter. upon its being shot through a condenser tube by fluid pressure and at fairly high velocities and then finally stopped abruptly by its sharp impact against an iron condenser or other heat exchanger. head after its emergence from the outlet end of the tube.
- the tube cleaner should possess a sufficiently flexible construction in combination with sufficiently resilient scraper blades to enable the tool to adapt itself to any abnormal irregularities within the tube, as encountered by it in its passage therethrough, and still permit the scraping blades of the tool to effectively clean the inside walls of the tube.
- a tube cleaner possessing all, the above described desirable properties for use in hydraulic shot cleaning-of condenser units with tubes of relatively small diameter, ranging down to as small as four-tenths of. an inch inside diameter.
- the. tool may advantageously be manufactured and usedfor cleaning large diameter condenser-tubes; and that when the tool is used with either 'large or small tubes, itmay be manually pushedfthrough the tube by a rod, as well. as being shot therethrough under fluid pressure.
- Fig. -1 is a side elevation of a cleaner embodying my invention.
- Fig; 2 is a view similar to, Fig. 1 but with the cleaner rotated 90?;
- Figs. 3 to 7 inclusive are. perspective views on,
- the cleaner as illustrated in the drawings, comprises a main body member having a circular head 2 and afiat shank 3.. Carried on this body is a resilient scraper element 4. There is a second body element5 secured. to this scraper and this in turn carries a second resilient scraper element 6,, to which in turnthere is attached another elementv 1.
- the scraper 4. is a generally 'V-shaped member formed of spring, steel or other metal, the scraper having two arms 4a which diverge toward their free ends and the free ends of which are turned outwardly to provide semi-circular scrapers 41), there being a hole 40 in each arm, as shown.
- the bend connecting the two arms is designated 4d.
- the free end of the shank 3' of the first body member is bifurcated, originally being in the form shown in dotted lines, providing a recess 8 into which the bend or base 4d of the scraper 4' is received, after which the bifurcated ends of the body are bent inwardly to form retaining lugs 9.
- This provides a method of retaining the scraper element flexibly on the body.
- the body element 5 is bifurcated at one end like the body 3, providing an opening l0 and lugs I I to hold the scraper element 6 which is exactly similar to scraper 4,.
- the other end of the body element v5 has a generally V'-shaped notch therein providing two forwardly extending arms l3, terminating in the lugs N that engage in open ings 4c of the scraper 4.
- the member 5 is thus flexibily connected in this manner with the body 3 and is in a plane .at right angles to body 3', so that its scraper elements are rotated with re spect to the axis of the assembly 90 from the scrapers 41) on the scraper element 4, and the scraper 4 is'confined by the arms l3 so that the scraper blades can exert the necessary pressure butth-e arms 4a cannot spread apart too far.
- the part 1 is shaped like the forward end of part 5, it being provided with a V-shaped notch between diverging arms 15 terminating in the lugs 16 to engage the openings 60 in the arms 6a of the scraper 6 and thus confine these arms from opening, out too far.
- the cleaner is an articulated structure having at least two of the two-bladed scrapers, with the blades of one being angularly rotated 90 from the other.
- Simple punch press operations may be used for shaping the parts. It may be cheaply constructed, has the necessary resilience but the scrapers are restrained from opening out too far; it may be made in small diameters and still have the desired qualities of flexibility, and the lugs 9 spaced from the opposite faces of the body 5, and the lugs I4 between which the body 3 extends, limit the relative flexing movement of the parts.
- a tube cleaner comprising a flat body member having a transverse slot adjacent one end thereof and a substantially V-shaped scraper element constituted of a continuous length of thin, fiat metal stock having the base of the V received in said slot whereby the element is restrained from turning transversely on an axis normal to the plane of the fiat body by the coacting surfaces of the fiat stock and the boundaries of the slot and also restrained against longitudinal movement, while the element as a whole may rock to a limited extent in a direction normal to the plane of the fiat body upon pressure being applied to one arm or the other and having the arms thereof extending longitudinally along the body in spaced relation thereto, the free ends of the scraper arms being turned outwardly to form blades which are spaced from the body.
- a fiat body element having a bifurcated end portion with inwardly turned spaced lugs and providing a transverse slot, a substantially V-shaped scraper element confined in the slot and retained therein by the inwardly turned lugs the scraper element being constituted of a continuous length of thin, fiat metal stock, the scraper element having arms which extend forwardly along the body and diverge from the flat sides of the body, the free ends of said arms being turned outwardly to provide scraper blades, the crotch of the V being in said slot whereby the scraper element may rock relative to the body in a plane normal to the sides of the flat body element while being restrained by the boundaries of the slot from turning on an axis which is normal to the face of said fiat body.
- a flat body element having a bifurcated end portion with inwardly turned spaced lugs and providing a transverse slot, a substantially V-shaped scraper element confined in the slot and retained therein by the inwardly turned lugs, the scraper element having arms which extend forwardly along the body and diverge from the fiat sides of the body, the free ends of said arms being turned outwardly to provide scraper blades, said arms each having an opening therein near the free end thereof, a second body element having an end portion similar to the first one with a similar scraper thereon, the opposite end of said secondbody member being bifurcated to provide ,legs which embrace the first scraper element, sa-id legs being provided with lugs that are entered in the openings in the arms of the first scraper element.
- a tube cleaner comprising-a .fiat. body member having a bifurcated end portion with inwardly turned lugs "providing a transverse slot in said body, a substantially V-shaped scraper element having the base thereof engaged in said slotand having arms which extend.
- each arm having an opening therein adjacent its free end, a second fiat body member at right angles to the first having a bifurcated end portion with inwardly turned lugs at one end thereof, which end portion embraces the said scraper element and the lugs of which are entered in the openings in the arms of said scraper element, the other end of said second body member being constructed similarly to said end of the first body member and having a similar scraper element thereon.
- a tube cleaner comprising a fiat body member having a bifurcated end portion with inwardly turned lugs providing a transverse slot in said body, a substantially V-shaped scraper element having the base thereof engaged in said slot and having arms which extend along the sides of the body, the free ends of the arms being turned outwardly to provide scraper blades, each arm having an opening therein adjacent its free end, a second fiat body member at right angles to the first having a bifurcated end portion with inwardly turned l ugs at one end thereof, which end portion embraces the said scraper element and the lugs of which are entered in the openings in the arms of said scraper element, the other end of said second body member being constructed similarly to said end of the first body member and having a similar scraper element thereon, and a bifurcated body having arms which embrace the second scraper and having lugs which enter the holes in the arms of the second scraper, which last named body limits the spreading of the arms of the second scraper.
- a tube cleaner comprising a fiat body member having a bifurcated end portion with inwardly turned lugs providing a transverse slot in said body, a substantially V-shaped scraper element having the base thereof engaged in said slot and having arms which extend along the sides of the body, the free ends of the arms being turned outwardly to provide scraper blades, each arm having an opening therein adjacent its free end, a second fiat body member at right angles to the first having a bifurcated end portion with inwardly turned lugs at one end there of, which end portion embraces the said scraper element and the lugs of which are entered in the openings in the arms of said scraper element, the other end of said second body member being constructed similarly to said end of the first body member and having a similar scraper element thereon, the second body element being telescoped between the lugs of the first body element, and the first body element being received between the said lugs on the arms of the second body element whereby relative pivoting movement of said body members is restricted.
- a condenser tube cleaner comprising a fiat body member having a disk-shaped head at one end and having its other end bifurcated and with inwardly turned lugs at said-other .end, a twoarmed scraper entered in theibifurcated portion of said body member and having arms which extend along the body member-with outwardly turned blade portions at the-free ends thereof, each arm having a hole-therein near, its outer end, a second flat member in a plane perpendicular to the first and having forwardly extending arms at one end thereof with inwardly turned lugs at the ends thereof, said. arms embracing the scraper 0n the first body member and having the lugs thereof pass through the holes in thearnfs of's'aid scraper; the other end of the REFERENCES CITED
- the following references are of record in the file of this patent:
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning In General (AREA)
Description
Aprll 4, 1950 c. M. GRIFFIN CONDENSER TUBE CLEANER WITH RESILIENT SCRAPER ELEMENTS Filed June 21, 1946 INVENTOR CeciZM G JLfZJL ATTORNEYS Patented Apr. 4, 1950 UNITED: STATES PATENT OFFICE CONDENSERTUBE CLEANER WITH BESILIEN T SCRAPER ELEMENTS Cecil M; Griffin, Pittsburgh, Pa. I ApplicationJ-une 21, 1946, Serial No. 678,221
7 Claims. (Cl. 15-40%.06)
This invention relates to a tool for cleaning tubes or a tube cleaner, and more particularly to a tube cleaner of the type employed to remove deposits from. condenser tubes.
In cleaning condenser tubes, and especially those of small diameter, a tube cleaner of a small size must of necessity be employed, and yet it should be a cheap and simple article to manufacture, speedy and. effective in its cleaning action, and, despite its. smallisizarugged' and durable enough in. its construction to withstand the severe abuse it will encounter. upon its being shot through a condenser tube by fluid pressure and at fairly high velocities and then finally stopped abruptly by its sharp impact against an iron condenser or other heat exchanger. head after its emergence from the outlet end of the tube.
In addition, the tube cleaner should possess a sufficiently flexible construction in combination with sufficiently resilient scraper blades to enable the tool to adapt itself to any abnormal irregularities within the tube, as encountered by it in its passage therethrough, and still permit the scraping blades of the tool to effectively clean the inside walls of the tube.
According to. the present invention there is provided a tube cleaner possessing all, the above described desirable properties for use in hydraulic shot cleaning-of condenser units with tubes of relatively small diameter, ranging down to as small as four-tenths of. an inch inside diameter.
However, it is not desired to restrict the, scope or method of use of the specific embodiment of the tube cleaner as shown and described herein, but it is appreciated thatthe. tool may advantageously be manufactured and usedfor cleaning large diameter condenser-tubes; and that when the tool is used with either 'large or small tubes, itmay be manually pushedfthrough the tube by a rod, as well. as being shot therethrough under fluid pressure. p
My invention maybe more fully understood by reference to the accompanying drawings, in which: I
' Fig. -1 is a side elevation of a cleaner embodying my invention. I
Fig; 2 is a view similar to, Fig. 1 but with the cleaner rotated 90?; and
Figs. 3 to 7 inclusive are. perspective views on,
a larger'scal'e "of the several elements of the cleaner.
The cleaner, as illustrated in the drawings, comprises a main body member having a circular head 2 and afiat shank 3.. Carried on this body isa resilient scraper element 4. There is a second body element5 secured. to this scraper and this in turn carries a second resilient scraper element 6,, to which in turnthere is attached another elementv 1. I
The scraper 4. is a generally 'V-shaped member formed of spring, steel or other metal, the scraper having two arms 4a which diverge toward their free ends and the free ends of which are turned outwardly to provide semi-circular scrapers 41), there being a hole 40 in each arm, as shown. The bend connecting the two arms is designated 4d.
The free end of the shank 3' of the first body member is bifurcated, originally being in the form shown in dotted lines, providing a recess 8 into which the bend or base 4d of the scraper 4' is received, after which the bifurcated ends of the body are bent inwardly to form retaining lugs 9. This provides a method of retaining the scraper element flexibly on the body.
The body element 5 is bifurcated at one end like the body 3, providing an opening l0 and lugs I I to hold the scraper element 6 which is exactly similar to scraper 4,. The other end of the body element v5 has a generally V'-shaped notch therein providing two forwardly extending arms l3, terminating in the lugs N that engage in open ings 4c of the scraper 4. The member 5 is thus flexibily connected in this manner with the body 3 and is in a plane .at right angles to body 3', so that its scraper elements are rotated with re spect to the axis of the assembly 90 from the scrapers 41) on the scraper element 4, and the scraper 4 is'confined by the arms l3 so that the scraper blades can exert the necessary pressure butth-e arms 4a cannot spread apart too far.
The part 1 is shaped like the forward end of part 5, it being provided with a V-shaped notch between diverging arms 15 terminating in the lugs 16 to engage the openings 60 in the arms 6a of the scraper 6 and thus confine these arms from opening, out too far.
Thus the cleaner is an articulated structure having at least two of the two-bladed scrapers, with the blades of one being angularly rotated 90 from the other. Simple punch press operations may be used for shaping the parts. It may be cheaply constructed, has the necessary resilience but the scrapers are restrained from opening out too far; it may be made in small diameters and still have the desired qualities of flexibility, and the lugs 9 spaced from the opposite faces of the body 5, and the lugs I4 between which the body 3 extends, limit the relative flexing movement of the parts.
It is understood that the scope of the present invention is not to be limited to the specific embodiment shown and described herein, except as limited by the scope of the following claims.
I claim:
1. A tube cleaner comprising a flat body member having a transverse slot adjacent one end thereof and a substantially V-shaped scraper element constituted of a continuous length of thin, fiat metal stock having the base of the V received in said slot whereby the element is restrained from turning transversely on an axis normal to the plane of the fiat body by the coacting surfaces of the fiat stock and the boundaries of the slot and also restrained against longitudinal movement, while the element as a whole may rock to a limited extent in a direction normal to the plane of the fiat body upon pressure being applied to one arm or the other and having the arms thereof extending longitudinally along the body in spaced relation thereto, the free ends of the scraper arms being turned outwardly to form blades which are spaced from the body.
2. In a tube cleaner, a fiat body element having a bifurcated end portion with inwardly turned spaced lugs and providing a transverse slot, a substantially V-shaped scraper element confined in the slot and retained therein by the inwardly turned lugs the scraper element being constituted of a continuous length of thin, fiat metal stock, the scraper element having arms which extend forwardly along the body and diverge from the flat sides of the body, the free ends of said arms being turned outwardly to provide scraper blades, the crotch of the V being in said slot whereby the scraper element may rock relative to the body in a plane normal to the sides of the flat body element while being restrained by the boundaries of the slot from turning on an axis which is normal to the face of said fiat body.
3. In a tube cleaner, a flat body element having a bifurcated end portion with inwardly turned spaced lugs and providing a transverse slot, a substantially V-shaped scraper element confined in the slot and retained therein by the inwardly turned lugs, the scraper element having arms which extend forwardly along the body and diverge from the fiat sides of the body, the free ends of said arms being turned outwardly to provide scraper blades, said arms each having an opening therein near the free end thereof, a second body element having an end portion similar to the first one with a similar scraper thereon, the opposite end of said secondbody member being bifurcated to provide ,legs which embrace the first scraper element, sa-id legs being provided with lugs that are entered in the openings in the arms of the first scraper element.
4. A tube cleaner comprising-a .fiat. body member having a bifurcated end portion with inwardly turned lugs "providing a transverse slot in said body, a substantially V-shaped scraper element having the base thereof engaged in said slotand having arms which extend. along the sides of the body, the free "ends "of the arms be'-' ing turned outwardly to provide scraper blades, each arm having an opening therein adjacent its free end, a second fiat body member at right angles to the first having a bifurcated end portion with inwardly turned lugs at one end thereof, which end portion embraces the said scraper element and the lugs of which are entered in the openings in the arms of said scraper element, the other end of said second body member being constructed similarly to said end of the first body member and having a similar scraper element thereon.
5. A tube cleaner comprising a fiat body member having a bifurcated end portion with inwardly turned lugs providing a transverse slot in said body, a substantially V-shaped scraper element having the base thereof engaged in said slot and having arms which extend along the sides of the body, the free ends of the arms being turned outwardly to provide scraper blades, each arm having an opening therein adjacent its free end, a second fiat body member at right angles to the first having a bifurcated end portion with inwardly turned l ugs at one end thereof, which end portion embraces the said scraper element and the lugs of which are entered in the openings in the arms of said scraper element, the other end of said second body member being constructed similarly to said end of the first body member and having a similar scraper element thereon, and a bifurcated body having arms which embrace the second scraper and having lugs which enter the holes in the arms of the second scraper, which last named body limits the spreading of the arms of the second scraper.
6. A tube cleaner comprising a fiat body member having a bifurcated end portion with inwardly turned lugs providing a transverse slot in said body, a substantially V-shaped scraper element having the base thereof engaged in said slot and having arms which extend along the sides of the body, the free ends of the arms being turned outwardly to provide scraper blades, each arm having an opening therein adjacent its free end, a second fiat body member at right angles to the first having a bifurcated end portion with inwardly turned lugs at one end there of, which end portion embraces the said scraper element and the lugs of which are entered in the openings in the arms of said scraper element, the other end of said second body member being constructed similarly to said end of the first body member and having a similar scraper element thereon, the second body element being telescoped between the lugs of the first body element, and the first body element being received between the said lugs on the arms of the second body element whereby relative pivoting movement of said body members is restricted.
7. A condenser tube cleaner comprising a fiat body member having a disk-shaped head at one end and having its other end bifurcated and with inwardly turned lugs at said-other .end, a twoarmed scraper entered in theibifurcated portion of said body member and having arms which extend along the body member-with outwardly turned blade portions at the-free ends thereof, each arm having a hole-therein near, its outer end, a second flat member in a plane perpendicular to the first and having forwardly extending arms at one end thereof with inwardly turned lugs at the ends thereof, said. arms embracing the scraper 0n the first body member and having the lugs thereof pass through the holes in thearnfs of's'aid scraper; the other end of the REFERENCES CITED The following references are of record in the file of this patent:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US678221A US2503042A (en) | 1946-06-21 | 1946-06-21 | Condenser tube cleaner with resilient scraper elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US678221A US2503042A (en) | 1946-06-21 | 1946-06-21 | Condenser tube cleaner with resilient scraper elements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2503042A true US2503042A (en) | 1950-04-04 |
Family
ID=24721897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US678221A Expired - Lifetime US2503042A (en) | 1946-06-21 | 1946-06-21 | Condenser tube cleaner with resilient scraper elements |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2503042A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US92752A (en) * | 1869-07-20 | Improvement in boiler-flue scrapers | ||
| US358304A (en) * | 1887-02-22 | Device for cleaning gun-barrels | ||
| US742644A (en) * | 1900-12-19 | 1903-10-27 | Sherwood Mfg Company | Tube-cleaner. |
| GB190520038A (en) * | 1905-10-04 | 1906-01-18 | Robert Brown | Improvements in or connected with Boiler Tube Scrapers and the like. |
| US1373999A (en) * | 1920-07-22 | 1921-04-05 | Drummond Alexander Cochran | Gun-cleaner |
| US1501759A (en) * | 1920-07-13 | 1924-07-15 | Ducasse Louis Hippolyt Auguste | Tube scraper |
| US1859148A (en) * | 1929-11-30 | 1932-05-17 | Joseph R Maclear | Boiler tube scraper |
| US2317542A (en) * | 1941-08-11 | 1943-04-27 | Bernard V Brunt | Device for cleaning tubes |
-
1946
- 1946-06-21 US US678221A patent/US2503042A/en not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US92752A (en) * | 1869-07-20 | Improvement in boiler-flue scrapers | ||
| US358304A (en) * | 1887-02-22 | Device for cleaning gun-barrels | ||
| US742644A (en) * | 1900-12-19 | 1903-10-27 | Sherwood Mfg Company | Tube-cleaner. |
| GB190520038A (en) * | 1905-10-04 | 1906-01-18 | Robert Brown | Improvements in or connected with Boiler Tube Scrapers and the like. |
| US1501759A (en) * | 1920-07-13 | 1924-07-15 | Ducasse Louis Hippolyt Auguste | Tube scraper |
| US1373999A (en) * | 1920-07-22 | 1921-04-05 | Drummond Alexander Cochran | Gun-cleaner |
| US1859148A (en) * | 1929-11-30 | 1932-05-17 | Joseph R Maclear | Boiler tube scraper |
| US2317542A (en) * | 1941-08-11 | 1943-04-27 | Bernard V Brunt | Device for cleaning tubes |
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