US377317A - Tube-blank and method of waking the same - Google Patents
Tube-blank and method of waking the same Download PDFInfo
- Publication number
- US377317A US377317A US377317DA US377317A US 377317 A US377317 A US 377317A US 377317D A US377317D A US 377317DA US 377317 A US377317 A US 377317A
- Authority
- US
- United States
- Prior art keywords
- ingot
- blank
- metal
- core
- tube
- 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
- 230000002618 waking Effects 0.000 title 2
- 239000002184 metal Substances 0.000 description 58
- 229910052751 metal Inorganic materials 0.000 description 58
- 239000011162 core material Substances 0.000 description 50
- 238000000034 method Methods 0.000 description 16
- 238000005096 rolling process Methods 0.000 description 16
- 239000000463 material Substances 0.000 description 12
- 239000011819 refractory material Substances 0.000 description 8
- 239000004927 clay Substances 0.000 description 6
- 229910052570 clay Inorganic materials 0.000 description 6
- 238000009966 trimming Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 210000003414 Extremities Anatomy 0.000 description 2
- 241000223221 Fusarium oxysporum Species 0.000 description 2
- 210000000614 Ribs Anatomy 0.000 description 2
- 241000872198 Serjania polyphylla Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 241001436434 Withius Species 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 2
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 230000023298 conjugation with cellular fusion Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 235000009973 maize Nutrition 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000021037 unidirectional conjugation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/053—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure characterised by the material of the blanks
- B21D26/055—Blanks having super-plastic properties
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S29/00—Metal working
- Y10S29/038—Spot welding with other step
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49391—Tube making or reforming
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12292—Workpiece with longitudinal passageway or stopweld material [e.g., for tubular stock, etc.]
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12389—All metal or with adjacent metals having variation in thickness
- Y10T428/12403—Longitudinally smooth and symmetrical
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12486—Laterally noncoextensive components [e.g., embedded, etc.]
Definitions
- lav-ca ion relates to an improvement; in auizs and in the method or process of provide a tuim blank, paron or steel, which may be opened a seamless tube having an interior f superior finish, walls of a uniform rcguiariy increasing or dehg thickness, and free from tendency to these ends in view my invention con- ..irst eastin an got around a core of y material, and then, by flat 1 or by llatiand edge rolling combined, rc-
- V out-mg the cast ingot w th yielding refractory m. tor at therein to a Ll tteucd blank.
- Jnfy invention further consists in first castng an ingot around a core of yielding rcfracry material partially or entirely surrounded. previmisly-worhcd metal and then rcducno the cast ingot to a flattened blank.
- My invention further consists in first castan ingot around a core of refractory material; secondly, reducing the ingot to a flat toned form, and, f nally, trimming" the edges of liattened form to complch: the blank.
- ty iuvcntiim further consists in a tiattcned tune-blank having a partial or complete core lining of superior metal welded thereto.
- My invention further consists in certain steps of procedure and in features of construction, which will be hereinafter more fully de scribed, and pointed out in the claims.
- Figure 1 is a view of he ingot cast around a core of fractory material, the latter being completely iucascd'withiu aprimitive tube of previouslywrought metal.
- Fi 2 represents the same reduced to a flattened form, and
- Fig. :5 represents the same with edges trimmed or the completed blank.
- Figs. 2, .3, t 7, t5, 9 represent Serial No. 195,830. (X0 model.)
- Figs. 10 and 11 represent; modified exterior forms of blanks.
- A represents the ingot metal
- B the core of yielding refractory ma tcrial
- l the core-casing or ingohlining or previously-worlced metal
- I the completed blank.
- the ingotl preferably employ a core, 1 of powdered or finely-divided arefrae' tory material.v ⁇ Vhcn the said core is lncased in previously-'worked metal, which may be hereinafter referred to as superior metal, itmay consist of powdered or finely-divided graphite mixed with powdered ouiieelydivided dry fire brick or clay. W'hen used without such casing, it may.
- the ends may be plugged with metal or forged together or closed in any way that will prevent escape of the refractory material during the first few passes.
- my method of flat and edge rolling,- the ingot or blank the tendency of the refract' y material to escape at the ends is soon neutralized by the friction of the particles one with another and with the interior surface of blank.
- a core so formed will readily disintegrate when external pressure is applied to the ingot.
- the core-casing or ingot-lining consists ,preferably, of wrought metal-iron or steel-freed as far as possible from redshortness and having its surface toward the ingot metal bright and in good. condition for forming a weld.
- the object of the core of refractory material is the same when thecasing of superior metal is used as when the core material is used alone,
- the amount of refractory material required for this purpose when a casing of superior metal is used naturally depends upon the thickness of the casing and the properties than could be employed without such partial casing; second, it furnishes a smooth regular and dense interior to the ingot. This in. most cases is of greater importance at the edges of the slit than elsewhere, since it is at those points that the greater strain will come in opening greater the blank, and there is where the danger of splitting occurs both in fiat rolling and in opening.
- the casing forms a finished interior and welds to the ingot metal so perfectly as to almost or quite lose its identity.
- the refractory core either alone or with its partial or complete superior metal casing, having been located within a mold, the ingot metal is cast around it, producing an ingot such, for example,as shown in Fig. 1, the shape preferred being rectangular in cross-section, with corners beveled or rounded;
- the shape of the core is preferably a Hat oval in cross-section, as shown in said. Fig. 1, and
- the sides of the ingot at points opposite the extremities of the longer transverse axis of the cavity are preferably thinner than at intermediate points, since the former admits of the pressure from the rolls in ilat rolling being exerted more directly on the core material, and thereby prevents the crowding of core ma tcria'i or the ingot metal, or both, laterally during the rolling, while the thinning oi" the ingot metal at the edges of the core admits of reducing the ingot to a coi'npleted black with but slight edge-finishing, or possibly without any edge-finishing.
- the ingdtits thus formed is reduced, either by hammering or by fiat rolling, edge rolling combined, to a flattened formsuch as is represented in Fig. 2, for example.
- the reducing-rollers are'preferably so shaped or applied in such a manner that the reduced ingot, as represented in Fig. 2, will have the metal disposed so that there will be a somewhat increased thickness of metal at the ends d and at one or more corresponding points,
- the bulging of the metal is preferably at points about one-half the distance from the edges to the center of the flattened-form, as shown in Fig. 2; but they might be located at other points, and more or less than two pairs of such ribs might be formed.
- the flattened form shown in Fig. 2 may become the completed blank ready to be opened up into a tube without further finish; but when such care has not been taken or has failed to produce the desired results, the blank iscompleted by trimming the edges of the flats tened form, and thereby making the metal at the ends of the completed blank the desired thickness.
- the metal at intervening points is for the purthe edges and sides of the core during the process of reducing the ingot to the flattened form, or partly during both, the lining or casing of superior metal becomes welded to the ingot metal, and the completed IIO blank has the appearance oi a homogeneous mass of metal provided with an interior slit.
- the fellewing saeps viz: the sou ssentially, of afiattzenedmetallicband partial Ol. complete lining of supelantially as set forth. will: for making aseamless tube, conenially, of aliattened l metallic band w or complete lining of supei and gmvided with Walls thickened bszantially as set forth.
Description
(No Model.)
O. A. MARSHALL.
TUBE BLANK AND METHOD OF MAKING THE SAME. N0. 377,317.-
atented Jan. 31
dramas fjlLkRl-QES Paras Friesa Ahiili MEN-50E? BF ii/iAKlNG THE SAME.
SPECIFICATION forming part; of Letters Patent No. 377,317, dated January 31, 1888.
Application filed March 19, 19.86.
is and i n the Method or and. I do hereby declare the following dear, and xact ('leseription of the ch as wilt enable others skilled in ,ch it upper-thins to maize and use to be. a
some;
lav-ca ion relates to an improvement; in auizs and in the method or process of provide a tuim blank, paron or steel, which may be opened a seamless tube having an interior f superior finish, walls of a uniform rcguiariy increasing or dehg thickness, and free from tendency to these ends in view my invention con- ..irst eastin an got around a core of y material, and then, by flat 1 or by llatiand edge rolling combined, rc-
V, out-mg the cast ingot w th yielding refractory m. tor at therein to a Ll tteucd blank.
Jnfy invention further consists in first castng an ingot around a core of yielding rcfracry material partially or entirely surrounded. previmisly-worhcd metal and then rcducno the cast ingot to a flattened blank.
My invention. further consists in first castan ingot around a core of refractory material; secondly, reducing the ingot to a flat toned form, and, f nally, trimming" the edges of liattened form to complch: the blank.
ty iuvcntiim further consists in a tiattcned tune-blank having a partial or complete core lining of superior metal welded thereto.
My invention further consists in certain steps of procedure and in features of construction, which will be hereinafter more fully de scribed, and pointed out in the claims.
in the accompanying drawings, Figure 1 is a view of he ingot cast around a core of fractory material, the latter being completely iucascd'withiu aprimitive tube of previouslywrought metal. Fi 2 represents the same reduced to a flattened form, and Fig. :5 represents the same with edges trimmed or the completed blank. Figs. 2, .3, t 7, t5, 9 represent Serial No. 195,830. (X0 model.)
ingots having modified forms of core, and Figs. 10 and 11 represent; modified exterior forms of blanks.
In the several figures, A represents the ingot metal; B, the core of yielding refractory ma tcrial; (l, the core-casing or ingohlining or previously-worlced metal, and I) the completed blank.
In forming the ingotl preferably employ a core, 1 of powdered or finely-divided arefrae' tory material.v \Vhcn the said core is lncased in previously-'worked metal, which may be hereinafter referred to as superior metal, itmay consist of powdered or finely-divided graphite mixed with powdered ouiieelydivided dry fire brick or clay. W'hen used without such casing, it may. consist of powdered or finely-divided graphite with powdered or finely-divided fire-clay mixed sparingly therewith, the clay having been mixed in a damp state and the water having been expelled by subsequent bakin The latter steps are for the purpose of rendering the core sufficiently cohercnt'to retain its form while the ingot metal is being cast around it.
. I, prefer to cast the ingots with the core incloscd at, the ends by ingot; metal. \Vhcn this is not done, the ends may be plugged with metal or forged together or closed in any way that will prevent escape of the refractory material during the first few passes. By my method of flat and edge rolling,- the ingot or blank the tendency of the refract' y material to escape at the ends is soon neutralized by the friction of the particles one with another and with the interior surface of blank.
\Vhen working with my preferred form of ingot, the matter of closing the ends is of minor importance, except in the case of the. edge thickness being very smalhwhcn the solid ends aid to prevent splittin Other forms of ingot I work so as to reduce the core to the form of a thin layer as soon as practicable.
A core so formed will readily disintegrate when external pressure is applied to the ingot.
The above constituents, while forming an ellicient core, are selected from numerous subusing or lining, whichmay be anything between no casing whatever and a complete casing, would naturally determine the degree of coherence required of the refractory core.
The core-casing or ingot-lining consists ,preferably, of wrought metal-iron or steel-freed as far as possible from redshortness and having its surface toward the ingot metal bright and in good. condition for forming a weld.
The object of the core of refractory material is the same when thecasing of superior metal is used as when the core material is used alone,
in so far as it prevents the interior walls of the casing from welding during the reducing process. The amount of refractory material required for this purpose when a casing of superior metal is used naturally depends upon the thickness of the casing and the properties than could be employed without such partial casing; second, it furnishes a smooth regular and dense interior to the ingot. This in. most cases is of greater importance at the edges of the slit than elsewhere, since it is at those points that the greater strain will come in opening greater the blank, and there is where the danger of splitting occurs both in fiat rolling and in opening.
In cases where the edge strengthening is not necessary, because of the final shape of the tube or little strain in opening, the casing forms a finished interior and welds to the ingot metal so perfectly as to almost or quite lose its identity.
The refractory core, either alone or with its partial or complete superior metal casing, having been located within a mold, the ingot metal is cast around it, producing an ingot such, for example,as shown in Fig. 1, the shape preferred being rectangular in cross-section, with corners beveled or rounded;
The shape of the core is preferably a Hat oval in cross-section, as shown in said. Fig. 1, and
the sides of the ingot at points opposite the extremities of the longer transverse axis of the cavity are preferably thinner than at intermediate points, since the former admits of the pressure from the rolls in ilat rolling being exerted more directly on the core material, and thereby prevents the crowding of core ma tcria'i or the ingot metal, or both, laterally during the rolling, while the thinning oi" the ingot metal at the edges of the core admits of reducing the ingot to a coi'npleted black with but slight edge-finishing, or possibly without any edge-finishing.
The ingdtits thus formed is reduced, either by hammering or by fiat rolling, edge rolling combined, to a flattened formsuch as is represented in Fig. 2, for example. The reducing-rollers are'preferably so shaped or applied in such a manner that the reduced ingot, as represented in Fig. 2, will have the metal disposed so that there will be a somewhat increased thickness of metal at the ends d and at one or more corresponding points,
blank between the The object of the increased thickness d, on opposite sides of the ends.
at the ends is to furnish theadditional metal required in opening up the ends without reducing the general thickness of the tube-wall at those points, and the exterior bulging of pose of providing work, and hence bite for a pair of rolls to draw the blank over a ball or mandrel. The bulging of the metal is preferably at points about one-half the distance from the edges to the center of the flattened-form, as shown in Fig. 2; but they might be located at other points, and more or less than two pairs of such ribs might be formed.
When the relative thicknesses of the ingot metal opposite are determined carefully with aview to econ; omyin material and a saving in the rolling process, the flattened form shown in Fig. 2 may become the completed blank ready to be opened up into a tube without further finish; but when such care has not been taken or has failed to produce the desired results, the blank iscompleted by trimming the edges of the flats tened form, and thereby making the metal at the ends of the completed blank the desired thickness.
During the process of casting the ingot, or
orby fiat and 1 the metal at intervening points is for the purthe edges and sides of the core during the process of reducing the ingot to the flattened form, or partly during both, the lining or casing of superior metal becomes welded to the ingot metal, and the completed IIO blank has the appearance oi a homogeneous mass of metal provided with an interior slit.
The modified form of core shown in Figs. 4,
5, 6, 7, 8, and 9 represents a few of the numerous forms which may be employed in forming the ingot, and the modifications shown in Figs.
10 and 11 represent two of the many forms which the blank may the rollers. g V
The particular form of blank which is adapted to be opened into a circular, tube is not herein particularly pointed out and distinguished from blanks adapted for other forms of tubes, as the same is intended to form the subject-matter of aseparate application, and, so far as the explanation herein made may be applicable to the circular form only, I wish to reserve the privilege of mating the same a part of said separate application.
Having fully described my inventiomwhat I claim as new, and desire to secure by Letters Patent, is
1. In the process of making a tube-blank, the following steps, viz: first, casting an ingot around a core, the wall of which consists wholly have as it comes from 011;), L sf .wperiei. I :iub'rior lining of superior metal, rereiiucmg ingot to a e ingot to aflattened form byfiab and ternai are. mg, and trimming the edges. In process making e formaking aseamless tube,c0n-
the fellewing saeps viz: the sou ssentially, of afiattzenedmetallicband partial Ol. complete lining of supelantially as set forth. will: for making aseamless tube, conenially, of aliattened l metallic band w or complete lining of supei and gmvided with Walls thickened bszantially as set forth.
In making seamless tubes, conlly, 0f afia'ntened metallic band l 5 rf or complete lining of supe- 40 301m by Ii-m and. edge r0 trimmed. edges, substantially In the process "f 'tliefollowiiig sore, 5W0 .iizzmetz'icallye 20 which extend near r the on tbeiutemn':
meny wi'iereof I have signed this on i we presence of twp subscrib- 1 mSiES.
A. MARSHALL. 'Witnesses:
' (F. JL'MALONEY,
A" MONTGOMERY.
Publications (1)
Publication Number | Publication Date |
---|---|
US377317A true US377317A (en) | 1888-01-31 |
Family
ID=2446320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US377317D Expired - Lifetime US377317A (en) | Tube-blank and method of waking the same |
Country Status (1)
Country | Link |
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US (1) | US377317A (en) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2957230A (en) * | 1955-08-01 | 1960-10-25 | Olin Mathieson | Method of making plate or sheet metal articles having hollow sections |
US2983993A (en) * | 1955-08-01 | 1961-05-16 | Olin Mathieson | Sheet or plate metal articles having hollow sections and method of making the same |
US2983994A (en) * | 1955-08-01 | 1961-05-16 | Olin Mathieson | Metal articles having hollow sections and method of making same |
US2986810A (en) * | 1959-02-11 | 1961-06-06 | Continental Can Co | Production of composite metal stock having internal channels |
US3029155A (en) * | 1959-08-21 | 1962-04-10 | Continental Can Co | Enamel-powder resist systems |
US3036369A (en) * | 1955-06-29 | 1962-05-29 | Revere Copper & Brass Inc | Method of making fluid conducting elements |
US3058181A (en) * | 1959-07-08 | 1962-10-16 | Continental Can Co | Art of preparing ingots with discontinuities and integrated bonds |
US3061924A (en) * | 1959-03-06 | 1962-11-06 | Continental Can Co | Production of internally cladded laminate metal stock |
US3062403A (en) * | 1957-03-12 | 1962-11-06 | Emery I Valyi | Pressure vessel and method of making same |
US3077661A (en) * | 1958-03-28 | 1963-02-19 | Howard A Fromson | Method of making composite seamless tubing |
US3078567A (en) * | 1958-03-05 | 1963-02-26 | Howard A Fromson | Method of forming thin-walled metal tubing |
US3123899A (en) * | 1964-03-10 | Townhill | ||
US3144712A (en) * | 1959-04-01 | 1964-08-18 | Continental Can Co | Preparation of non-homogeneous metal stock having regions of relatively low notch sensitivity |
US3150936A (en) * | 1963-08-20 | 1964-09-29 | James G Hunt | Tungsten tubing extrusion billet |
US3201861A (en) * | 1960-03-31 | 1965-08-24 | Fromson H A | Method of making a double-walled tube |
US3206838A (en) * | 1955-12-29 | 1965-09-21 | Olin Mathieson | Heat exchanger element |
US3247583A (en) * | 1962-03-21 | 1966-04-26 | Continental Can Co | Production of externally finned sheet stock |
-
0
- US US377317D patent/US377317A/en not_active Expired - Lifetime
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3123899A (en) * | 1964-03-10 | Townhill | ||
US3036369A (en) * | 1955-06-29 | 1962-05-29 | Revere Copper & Brass Inc | Method of making fluid conducting elements |
US2983993A (en) * | 1955-08-01 | 1961-05-16 | Olin Mathieson | Sheet or plate metal articles having hollow sections and method of making the same |
US2983994A (en) * | 1955-08-01 | 1961-05-16 | Olin Mathieson | Metal articles having hollow sections and method of making same |
US2957230A (en) * | 1955-08-01 | 1960-10-25 | Olin Mathieson | Method of making plate or sheet metal articles having hollow sections |
US3206838A (en) * | 1955-12-29 | 1965-09-21 | Olin Mathieson | Heat exchanger element |
US3062403A (en) * | 1957-03-12 | 1962-11-06 | Emery I Valyi | Pressure vessel and method of making same |
US3078567A (en) * | 1958-03-05 | 1963-02-26 | Howard A Fromson | Method of forming thin-walled metal tubing |
US3077661A (en) * | 1958-03-28 | 1963-02-19 | Howard A Fromson | Method of making composite seamless tubing |
US2986810A (en) * | 1959-02-11 | 1961-06-06 | Continental Can Co | Production of composite metal stock having internal channels |
US3061924A (en) * | 1959-03-06 | 1962-11-06 | Continental Can Co | Production of internally cladded laminate metal stock |
US3144712A (en) * | 1959-04-01 | 1964-08-18 | Continental Can Co | Preparation of non-homogeneous metal stock having regions of relatively low notch sensitivity |
US3058181A (en) * | 1959-07-08 | 1962-10-16 | Continental Can Co | Art of preparing ingots with discontinuities and integrated bonds |
US3029155A (en) * | 1959-08-21 | 1962-04-10 | Continental Can Co | Enamel-powder resist systems |
US3201861A (en) * | 1960-03-31 | 1965-08-24 | Fromson H A | Method of making a double-walled tube |
US3247583A (en) * | 1962-03-21 | 1966-04-26 | Continental Can Co | Production of externally finned sheet stock |
US3150936A (en) * | 1963-08-20 | 1964-09-29 | James G Hunt | Tungsten tubing extrusion billet |
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