CA1048780A - Apparatus for plugging holes in a metallurgical furnace - Google Patents
Apparatus for plugging holes in a metallurgical furnaceInfo
- Publication number
- CA1048780A CA1048780A CA75223436A CA223436A CA1048780A CA 1048780 A CA1048780 A CA 1048780A CA 75223436 A CA75223436 A CA 75223436A CA 223436 A CA223436 A CA 223436A CA 1048780 A CA1048780 A CA 1048780A
- Authority
- CA
- Canada
- Prior art keywords
- tubular member
- piston
- opening
- conical
- plugging
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
- F27D3/1509—Tapping equipment
- F27D3/1536—Devices for plugging tap holes, e.g. plugs stoppers
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
- C21B9/10—Other details, e.g. blast mains
- C21B9/12—Hot-blast valves or slides for blast furnaces
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Blast Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
- Basic Packing Technique (AREA)
Abstract
Abstract of the Disclosure An apparatus for plugging holes in an electric smelting furnace or the like is disclosed. The apparatus comprises first and second tubular members, the second being adapted to be secured to the first by means of two assemblies each of which may serve as either a release or a pivotal element about which the second tubular member may be rotated to facilitate loading and/or cleaning of either tubular member. A piston is provided which travels substantially the longitudinal extent of the first tubular member to extrude, under pressure, a material suitable for plugging a hole.
Description
1~)4~780 The preserlt invention rela-tes to an apparatus employed in tappiny procedures in electric smelting furnaces and more particularly, for plugging tapping holes therein.
It is well known in the smelting industry to employ a suitable material such as clay, paste, or the like for plugging tapping holes which may be conveniently provided at various locations in the furnace. Typically employed are so-called tapping guns which may consist of a tube with a piston operated by a compressor or similar arrangement. Operating pressures on - the piston typically are in the range 7-14 kg/cm . Pressures on the plugging clay or paste piston may be as great as 28 kg/cm , the pressure requirement being simultaneously a function of the type of plug paste employed and the smelting product. As will be apparent, the plug paste is ejected from the gun with great force.
Known tapping gun apparatus are so designed as to require filling of the tube through a closable hatch on the tube, -characteristically located over and slightly in front of the rearmost or completely retracted position of the piston. The !O size of the port associated with the typical hatch is, of necessity, of rather small diameter relative to the volume of -material which is to be forced therethrough, which volume generally ranges from about 30-50 liters. Thus, it is seen that a laborious, -;
.- - 1 - . ~ .
~' -.' ~': . ' : ~ ", ' ., , - : , :.' . ~: ' 10487l9(1 tedious and time consuming effort is involved, particularly in view of the necessity to manually operate the piston many times in order to fill the tube. There is also an inherent operator risk in this procedure as demonstrated by the frequency with which individuals actually sustain injuries to their hands during the course thereo.
In the typical arrangement hereinabove described, there is yet another drawback which has, again, occasioned time consuming, laborious and'tedious effort. As will be appreciated readily, clean7ng of such apparatus has been troublesome. In fact, in ~'any instances attempts at cleaning have not been altogether successful, there remaining a residual of hardened'or compacted-paste ~hich ' ' serves to degrade performance of the apparat~us during the course of subsequent tapping or pl~gglng operations.
A further design characteristic of known apparatus has been the relatively elaborate means for securing the typical tapered portion of such apparatus through which portion the plug paste is propelled. In that such portion, characteristically referred to as a mouthpiece or portion and generally fashioned in conical configuration, has been considered heretofore-as permanently fixed to the remainder of the gun, there has typically b'een provided an arrangement of at least four heavy nut a~d bolt ' 10~8780 assemblies. Permanent, in this sense, is a relative term since the mouthpiece or portion is subject to wear and occasional damage during the ordinary course of operation of the gun. Occasionally the mouthpiece is partially destroyed by liquid metal.
A.ccordingly, it is a general object of the present invention Uo provide an improved apparatus for plugging tapping holes in a furnace having design features which facilitate safe loading, efficient cleaning, maintenance and repair and further, giving rise to improved operating .
characteristics. ;.-With this object in view, there is provided apparatus for plugging holes in an electric smelting furnace or the like comprising a Eirst tubular member having accessible openings at the longitudihal extremes thereof, a piston operatively associated therewith being sized and adapted to be inserted therein and.displaced along the longi-tudinal axis thereof, a hatch formed in the tubular member the hatch being appropriately dimensioned to at least permit visual inspection of the contents of the tubular member, a second, generally tubular member having accessible openings at the longitudinal extremes thereof, a first accessible opening being dimensioned to be urged into intimate contact with the periphery of one of the accessible openings of the first tubular member and a second accessible ~ .
~ ' '- -, -'~ . ', - :
1~148~80 opening being dimensioned accord:ing as the requirements as pred.efined.by the size of a hole to be plugged., and means having a first and. a second portion for securing the second tubular'member to the first tubular member the means being adapted. to permit the second. tubular member to be released at a first portion of the securing means and. pivoted about a second. portion of the securing means.
, It is preferred that the second. tubular member or ' 10 mouth portion be of generally conical configuration.
' Preferably, the securing means are constituted.by - ' substantially id.entical assemblies each of which may comprise, for example, a hinge and a bolt adapted. to be releasabLy inserted. therein.
The hatch may serve the dual purposes of permitting visu~l inspection of the contents of the'main body or first tubular member of the apparatus, and., if appropriately sized.,'serving as an alternative entry port for the plugging paste. The latter is a particularly d.esirable feature in the event that it should.be the practice to replenish the.
supply of material incrementally rather than infrequently in larger amounts.
Desirably, a cannister~ e reservoir or container is provid.ed. appropriately sized. to be load.ed. into the main body and extracted upon exhaustion of the supply of , - : ' ' ' -,: ' ~ ,' . ' . ~', ''' ~.
10~7~
plugging paste or other material contained therein. In this arrangen-ent, the piston head is modified to be appropriately dimensioned for travel through a tubular chamber having a smaller diameter bore.
These and other aspects of the present invention will now be more fully described with reference to the single drawing figure presented by way of example only, and in whic~
is shown a somewhat schema-tic cross sectional view of an embodiment of the present invention.
Referring now to the Fig.,there is shown a main body ~r first tubular member 1, the chamber or bore of which is adapted to receive- a-piston 2 and permit its travel substantially the longitudinal extent thereof.
The piston 2, shown in its retracted or seated position, may be correspondingly adapted at its outer diameter to ~ _ sealingly engage-the inner diameter of the bore along the extent of its travel therethrough. A mouthpiece or portion 3 shown as having a generally conical configuration is positioned such that the periphery of its larger -diameter opening sealingly engages the periphery of an opening at the opposite longitudinal extreme of the main body or tubular member 1 from that into which is received the piston 2. The mouthpiece 3 is provided at its opposite longitudinal extreme with an opening preferably ... . . .
-.- : ,' ' '', ' sized to correspond to the diameter o~ a hole 10 of an electric smelting furnace pot 12 to be plu~ged.
- Securing of the generally conical tubular member : 3 into the position shown is accomplished by means of assemblies 4, 5 shown as substantially identical hinge and bolt arrangements. The bolts 5 are preferably and advantageously tapered.
From an'examination of the drawing figure it will be apparent that the assemblies 4, 5 additionally serve the purpose of allowing the mouthpiece 3 to be pivotally disen2aged from the tubular member l. A given tapered bolt 5 may be readily removed while its counterpart is maintained in its associated hinge 4. `
A hatch 6 may be provided in tubular member 1.
. .- .
Provision thereof isnot essential to proper operation of the apparatus. Rather, opening of the hatch 6 may facilitate visual inspection of the inter or of the tubular member 1. Accordingly, the port beneath the hatch 6 may be sized correspondingly small. If it is desired that the hatch 6 additionally serve as an alternative entry port for a material to be used in a plugging operation, the port may be somewhat larger in diameter.
''~'` '` `~: ~' ~' .
: - ~
.
1g)4~780 In the preferred embodiment a prepacked cylinder or cartridge 7, preferably of a material such as plastic cardboard or the like may be praced into the tubular member or main body 1. The out~er diameter of the cart-lidge 7 should be somewhat smaller than the inner diameter of the tubular member 1 as will be apparent. The diameter of the head of the piston 2 is.sized according as the requirement to pass freely through the tubular member 1, or alternatively, the cylinder 7.
In plugging operations the apparatus is connected to a source of compressed air or hydraulic cylinder (not shown) or other appropriate actuating means by means of a piston rod 8. The piston 2 is caused to be propelled forward through the tubular member 1 to propel the plugging m2terial through the opening in mouth portion 3 whereby a plugging operation is completed.
In the preferred filling operation, the mouthpiece - 3 is partially released from one of the hinges 4 by re-moval of an associated bolt 5. The mouthpiece 3 may then be pivoted about the opposing assembly 4, 5 to 1~4~78(~
allow complete or partial Eilling of the tubular member 1 or, alternatively, the insertion of a canister 7 therein.
In a cleaning operation, the mouthpiece 3 is partially released and. pivoted.in precisely the same manner as that required for fi~ling operation. Resid.ual material may then be pushed backward.by insertion of an appropriate rod through the smaller d.iameter accessible opening in the mouthpiece 3. It will be apparent that another technique for cleaning might be employed in that there are two accessible openings.
Cleaning of the tubular member-l is accomplished. in a well known manner.
' Rep].acement or repair of the mouthpiece 3 is accomplished by removing both bolts 5 from their associated hinges 4 and. completely removing the mouth-piece 3.
- It will be und.erstood that the claims are intend.ed to cover all changes and. modifications of the preferred 20 embodiment of the invention, herein chosen for the pur- .
pose of illustration, which d.o not constitute departures from the spirit and. scbpe of the, invention.
... . . .
.. - -, ... .. .. .
.; , :.
It is well known in the smelting industry to employ a suitable material such as clay, paste, or the like for plugging tapping holes which may be conveniently provided at various locations in the furnace. Typically employed are so-called tapping guns which may consist of a tube with a piston operated by a compressor or similar arrangement. Operating pressures on - the piston typically are in the range 7-14 kg/cm . Pressures on the plugging clay or paste piston may be as great as 28 kg/cm , the pressure requirement being simultaneously a function of the type of plug paste employed and the smelting product. As will be apparent, the plug paste is ejected from the gun with great force.
Known tapping gun apparatus are so designed as to require filling of the tube through a closable hatch on the tube, -characteristically located over and slightly in front of the rearmost or completely retracted position of the piston. The !O size of the port associated with the typical hatch is, of necessity, of rather small diameter relative to the volume of -material which is to be forced therethrough, which volume generally ranges from about 30-50 liters. Thus, it is seen that a laborious, -;
.- - 1 - . ~ .
~' -.' ~': . ' : ~ ", ' ., , - : , :.' . ~: ' 10487l9(1 tedious and time consuming effort is involved, particularly in view of the necessity to manually operate the piston many times in order to fill the tube. There is also an inherent operator risk in this procedure as demonstrated by the frequency with which individuals actually sustain injuries to their hands during the course thereo.
In the typical arrangement hereinabove described, there is yet another drawback which has, again, occasioned time consuming, laborious and'tedious effort. As will be appreciated readily, clean7ng of such apparatus has been troublesome. In fact, in ~'any instances attempts at cleaning have not been altogether successful, there remaining a residual of hardened'or compacted-paste ~hich ' ' serves to degrade performance of the apparat~us during the course of subsequent tapping or pl~gglng operations.
A further design characteristic of known apparatus has been the relatively elaborate means for securing the typical tapered portion of such apparatus through which portion the plug paste is propelled. In that such portion, characteristically referred to as a mouthpiece or portion and generally fashioned in conical configuration, has been considered heretofore-as permanently fixed to the remainder of the gun, there has typically b'een provided an arrangement of at least four heavy nut a~d bolt ' 10~8780 assemblies. Permanent, in this sense, is a relative term since the mouthpiece or portion is subject to wear and occasional damage during the ordinary course of operation of the gun. Occasionally the mouthpiece is partially destroyed by liquid metal.
A.ccordingly, it is a general object of the present invention Uo provide an improved apparatus for plugging tapping holes in a furnace having design features which facilitate safe loading, efficient cleaning, maintenance and repair and further, giving rise to improved operating .
characteristics. ;.-With this object in view, there is provided apparatus for plugging holes in an electric smelting furnace or the like comprising a Eirst tubular member having accessible openings at the longitudihal extremes thereof, a piston operatively associated therewith being sized and adapted to be inserted therein and.displaced along the longi-tudinal axis thereof, a hatch formed in the tubular member the hatch being appropriately dimensioned to at least permit visual inspection of the contents of the tubular member, a second, generally tubular member having accessible openings at the longitudinal extremes thereof, a first accessible opening being dimensioned to be urged into intimate contact with the periphery of one of the accessible openings of the first tubular member and a second accessible ~ .
~ ' '- -, -'~ . ', - :
1~148~80 opening being dimensioned accord:ing as the requirements as pred.efined.by the size of a hole to be plugged., and means having a first and. a second portion for securing the second tubular'member to the first tubular member the means being adapted. to permit the second. tubular member to be released at a first portion of the securing means and. pivoted about a second. portion of the securing means.
, It is preferred that the second. tubular member or ' 10 mouth portion be of generally conical configuration.
' Preferably, the securing means are constituted.by - ' substantially id.entical assemblies each of which may comprise, for example, a hinge and a bolt adapted. to be releasabLy inserted. therein.
The hatch may serve the dual purposes of permitting visu~l inspection of the contents of the'main body or first tubular member of the apparatus, and., if appropriately sized.,'serving as an alternative entry port for the plugging paste. The latter is a particularly d.esirable feature in the event that it should.be the practice to replenish the.
supply of material incrementally rather than infrequently in larger amounts.
Desirably, a cannister~ e reservoir or container is provid.ed. appropriately sized. to be load.ed. into the main body and extracted upon exhaustion of the supply of , - : ' ' ' -,: ' ~ ,' . ' . ~', ''' ~.
10~7~
plugging paste or other material contained therein. In this arrangen-ent, the piston head is modified to be appropriately dimensioned for travel through a tubular chamber having a smaller diameter bore.
These and other aspects of the present invention will now be more fully described with reference to the single drawing figure presented by way of example only, and in whic~
is shown a somewhat schema-tic cross sectional view of an embodiment of the present invention.
Referring now to the Fig.,there is shown a main body ~r first tubular member 1, the chamber or bore of which is adapted to receive- a-piston 2 and permit its travel substantially the longitudinal extent thereof.
The piston 2, shown in its retracted or seated position, may be correspondingly adapted at its outer diameter to ~ _ sealingly engage-the inner diameter of the bore along the extent of its travel therethrough. A mouthpiece or portion 3 shown as having a generally conical configuration is positioned such that the periphery of its larger -diameter opening sealingly engages the periphery of an opening at the opposite longitudinal extreme of the main body or tubular member 1 from that into which is received the piston 2. The mouthpiece 3 is provided at its opposite longitudinal extreme with an opening preferably ... . . .
-.- : ,' ' '', ' sized to correspond to the diameter o~ a hole 10 of an electric smelting furnace pot 12 to be plu~ged.
- Securing of the generally conical tubular member : 3 into the position shown is accomplished by means of assemblies 4, 5 shown as substantially identical hinge and bolt arrangements. The bolts 5 are preferably and advantageously tapered.
From an'examination of the drawing figure it will be apparent that the assemblies 4, 5 additionally serve the purpose of allowing the mouthpiece 3 to be pivotally disen2aged from the tubular member l. A given tapered bolt 5 may be readily removed while its counterpart is maintained in its associated hinge 4. `
A hatch 6 may be provided in tubular member 1.
. .- .
Provision thereof isnot essential to proper operation of the apparatus. Rather, opening of the hatch 6 may facilitate visual inspection of the inter or of the tubular member 1. Accordingly, the port beneath the hatch 6 may be sized correspondingly small. If it is desired that the hatch 6 additionally serve as an alternative entry port for a material to be used in a plugging operation, the port may be somewhat larger in diameter.
''~'` '` `~: ~' ~' .
: - ~
.
1g)4~780 In the preferred embodiment a prepacked cylinder or cartridge 7, preferably of a material such as plastic cardboard or the like may be praced into the tubular member or main body 1. The out~er diameter of the cart-lidge 7 should be somewhat smaller than the inner diameter of the tubular member 1 as will be apparent. The diameter of the head of the piston 2 is.sized according as the requirement to pass freely through the tubular member 1, or alternatively, the cylinder 7.
In plugging operations the apparatus is connected to a source of compressed air or hydraulic cylinder (not shown) or other appropriate actuating means by means of a piston rod 8. The piston 2 is caused to be propelled forward through the tubular member 1 to propel the plugging m2terial through the opening in mouth portion 3 whereby a plugging operation is completed.
In the preferred filling operation, the mouthpiece - 3 is partially released from one of the hinges 4 by re-moval of an associated bolt 5. The mouthpiece 3 may then be pivoted about the opposing assembly 4, 5 to 1~4~78(~
allow complete or partial Eilling of the tubular member 1 or, alternatively, the insertion of a canister 7 therein.
In a cleaning operation, the mouthpiece 3 is partially released and. pivoted.in precisely the same manner as that required for fi~ling operation. Resid.ual material may then be pushed backward.by insertion of an appropriate rod through the smaller d.iameter accessible opening in the mouthpiece 3. It will be apparent that another technique for cleaning might be employed in that there are two accessible openings.
Cleaning of the tubular member-l is accomplished. in a well known manner.
' Rep].acement or repair of the mouthpiece 3 is accomplished by removing both bolts 5 from their associated hinges 4 and. completely removing the mouth-piece 3.
- It will be und.erstood that the claims are intend.ed to cover all changes and. modifications of the preferred 20 embodiment of the invention, herein chosen for the pur- .
pose of illustration, which d.o not constitute departures from the spirit and. scbpe of the, invention.
... . . .
.. - -, ... .. .. .
.; , :.
Claims (2)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Apparatus for plugging holes in an electric smelting furnace comprising a tubular member open at a first end there-of, a piston operatively associated with said tubular member being sized and adapted to be inserted therein and displaced along the longitudinal axis thereof, a generally conical mem-ber having accessible openings at the longitudinal extremes thereof, a first accessible opening being dimensioned to be urged into contact with the periphery of the first end of said tubular member and a second accessible opening being dimensioned according as the requirements as predefined by the size of a hole to be plugged, and means joining said tubular member to said conical member with said first accessible opening and said opening of the first end being in register, said means comprising two hinge means spaced horizontally ap-proximately 180 degrees from each other, each said hinge means comprising cooperating leaf members joined by a tapered bolt, one leaf of each said hinge means being affixed to the tubular member and being mounted on the exterior thereof and the other said leaf member being affixed to the conical member and being mounted on the exterior thereof, each said tapered bolt being easily removable, removal of either one of said tapered bolts permitting the conical member to be rotated about the other of said tapered bolts to a point where the entire cross-sectional area of said opening of the first end of the tubular member is exposed and unobstructed by the conical member, and removal of both said tapered bolts per-mitting separation of said conical member from said tubular member.
2. Apparatus as claimed in claim 1 and further comprising a replaceable member dimensioned and adapted to be inserted into said tubular member, said replaceable member containing a material for plugging a hole and being further adapted to receive said piston therein and to allow travel of said piston therethrough.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO741186A NO132503C (en) | 1974-04-02 | 1974-04-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1048780A true CA1048780A (en) | 1979-02-20 |
Family
ID=19881546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA75223436A Expired CA1048780A (en) | 1974-04-02 | 1975-04-01 | Apparatus for plugging holes in a metallurgical furnace |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS5191808A (en) |
| BE (1) | BE827472A (en) |
| CA (1) | CA1048780A (en) |
| CS (1) | CS193044B2 (en) |
| DE (1) | DE2513590A1 (en) |
| ES (1) | ES436134A1 (en) |
| FI (1) | FI750901A (en) |
| FR (1) | FR2266132A1 (en) |
| IN (1) | IN141215B (en) |
| IT (1) | IT1034210B (en) |
| NO (1) | NO132503C (en) |
| PH (1) | PH14579A (en) |
| RO (1) | RO65042A (en) |
| SE (1) | SE414426B (en) |
| TR (1) | TR19490A (en) |
| ZA (1) | ZA751500B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180666A (en) * | 2013-05-23 | 2014-12-03 | 宜兴市新芳铜厂有限公司 | Inlet nozzle for heat-preservation furnace |
| CA3129886C (en) * | 2019-03-13 | 2024-01-16 | Franck MORELLATO | Tap hole plug gun |
| CN113574186A (en) * | 2019-03-13 | 2021-10-29 | Tmt出铁测量技术有限公司 | Taphole blocking gun |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5231217Y2 (en) * | 1971-06-30 | 1977-07-16 |
-
1974
- 1974-04-02 NO NO741186A patent/NO132503C/no unknown
-
1975
- 1975-03-10 PH PH16894A patent/PH14579A/en unknown
- 1975-03-11 ZA ZA00751500A patent/ZA751500B/en unknown
- 1975-03-12 IT IT21183/75A patent/IT1034210B/en active
- 1975-03-13 TR TR19490A patent/TR19490A/en unknown
- 1975-03-25 FI FI750901A patent/FI750901A/fi not_active Application Discontinuation
- 1975-03-27 DE DE19752513590 patent/DE2513590A1/en not_active Ceased
- 1975-03-27 FR FR7509757A patent/FR2266132A1/en active Granted
- 1975-03-28 JP JP50039042A patent/JPS5191808A/ja active Pending
- 1975-03-29 ES ES436134A patent/ES436134A1/en not_active Expired
- 1975-03-31 RO RO7581846A patent/RO65042A/en unknown
- 1975-04-01 SE SE7503695A patent/SE414426B/en unknown
- 1975-04-01 CA CA75223436A patent/CA1048780A/en not_active Expired
- 1975-04-02 BE BE155016A patent/BE827472A/en not_active IP Right Cessation
- 1975-04-02 IN IN657/CAL/75A patent/IN141215B/en unknown
- 1975-04-02 CS CS752242A patent/CS193044B2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA751500B (en) | 1976-10-27 |
| PH14579A (en) | 1981-09-24 |
| BE827472A (en) | 1975-07-31 |
| AU7938375A (en) | 1976-09-23 |
| FR2266132A1 (en) | 1975-10-24 |
| NO132503B (en) | 1975-08-11 |
| CS193044B2 (en) | 1979-09-17 |
| JPS5191808A (en) | 1976-08-12 |
| FR2266132B1 (en) | 1978-08-18 |
| IN141215B (en) | 1977-02-05 |
| ES436134A1 (en) | 1976-12-01 |
| NO132503C (en) | 1975-11-19 |
| RO65042A (en) | 1979-08-15 |
| DE2513590A1 (en) | 1975-10-23 |
| FI750901A (en) | 1975-10-03 |
| SE414426B (en) | 1980-07-28 |
| TR19490A (en) | 1979-04-17 |
| IT1034210B (en) | 1979-09-10 |
| SE7503695L (en) | 1975-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0160786B1 (en) | Dispensing device for a container containing viscous products | |
| DE2533256A1 (en) | Blood sampling syringe with piston boss for piston rod - has rear of piston sealing into end guide of cylinder | |
| CA1048780A (en) | Apparatus for plugging holes in a metallurgical furnace | |
| DE2502056A1 (en) | APPARATUS AND METHOD FOR CLEANING THE INSIDE OF LONG CYLINDRICAL CHAMBERS | |
| EP0726805B1 (en) | Device for preparing bone cement | |
| US4577112A (en) | Movable enclosure for the replacement and transportation of contaminated parts and complementary casing for such an enclosure | |
| US2192081A (en) | Device for recoil control | |
| US4072250A (en) | Apparatus for plugging holes in an electric smelting furnace or the like | |
| NZ290344A (en) | Bearing grease packer | |
| EP3094585B1 (en) | Drainage device | |
| DE3833504C2 (en) | ||
| DE1783075B1 (en) | Hollow electrode shut-off device | |
| DE102005016879A1 (en) | Device for unloading a mortar cartridge | |
| US5921181A (en) | Pneumatic cartridge expressing device | |
| US3682456A (en) | Metallurgical furnace with cartridge clay gun means | |
| US4244562A (en) | Powder injection apparatus for injection of powder into molten metal | |
| DE19802211C2 (en) | Device for removing the powder gases contained in a weapon barrel | |
| DE20212101U1 (en) | Apparatus for sealing inflatable objects such as tires for vehicles having a connector unit with a releasable closure | |
| DE2303540A1 (en) | DEVICE TO PREVENT UNCONTROLLED LEAKAGE OF GASEOUS HYDROCARBONS WHEN FILLING CONTAINERS, IN PARTICULAR TANK WAGONS, WITH MINERAL OIL PRODUCTS | |
| EP0249790A2 (en) | Apparatus for thermally spraying welding products | |
| DE4240014C2 (en) | Loading device | |
| DE3729318A1 (en) | Lifting device | |
| US3097017A (en) | Extraction method and apparatus | |
| DE3833506C2 (en) | ||
| DE2128703C3 (en) | Gun storage with mantlet |