US165972A - Improvement in the manufacture of metal knob-shanks - Google Patents
Improvement in the manufacture of metal knob-shanks Download PDFInfo
- Publication number
- US165972A US165972A US165972DA US165972A US 165972 A US165972 A US 165972A US 165972D A US165972D A US 165972DA US 165972 A US165972 A US 165972A
- Authority
- US
- United States
- Prior art keywords
- knob
- shanks
- tube
- manufacture
- recessed
- 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
- 239000002184 metal Substances 0.000 title description 30
- 229910052751 metal Inorganic materials 0.000 title description 30
- 238000004519 manufacturing process Methods 0.000 title description 22
- 210000001699 lower leg Anatomy 0.000 description 8
- 238000005266 casting Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 241001609372 Puschkinia Species 0.000 description 2
- 229910000754 Wrought iron Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N tin hydride Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/16—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings the coating being in the form of a bandage
-
- 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
- Y10T29/49599—Knob or knob shank making
-
- 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
- Y10T292/00—Closure fasteners
- Y10T292/82—Knobs
Definitions
- the object of my invention is ,to enable recessed knob-shanks, such as are described in the Letters Patent granted to Tuthill, Og-
- the first part of my 1" vention consists of the manufacture of such knob-shanks by the following operations performed in the order in which they are stated, viz: First, the production of an angular recessed tube of sheet metal, having the form internally of the knob-spindle, but with a shouldered recess at one side for engagement with the spindle spring, by first indenting the recess in the extended sheet metal and then bending the same into an angular tube. Second, the filling of this recessed tube with a core so as to prevent the entrance of melted metal into the tube and recess. Third, the casting of a mass of metal upon the said recessed knob-shank.
- Figure 1 represents a central longitudinal section of said knob-shank.
- Fig. 2 represents a transverse section of the same.
- Fig. 3 represents a view in perspective of a re Switchd angular tube such as is used in the manufacture of said knob-shank.
- the first operation is the production of the recessed angular .tube represented at Fig. 3 of the drawings.
- This is made of sheet metal, by preference of sheet iron, which, after being cut to the required form, is stamped between dies so as to indent a recess at a; it is then bent into a square tube, and is stamped a second time in dies with a square mandrel inserted in it so asto make its bore accurate.
- the recessed tube thus produced is fitted with a core, which may be a piece of wroughtiron somewhat longer than its bore, or may be made of core-sand, stiffened with a wire core bar.
- the tube with its core is inserted in a mold having a cavity of the form of the knob-shank to be produced. Then melted metal is poured into the mold so as to fill the same.
- the metal which I have used for this purpose is cast-iron.
- the result of the invention is that recessed knob-shanks can be produced at a sufficiently low cost to enable them to be sold in the market.
- the recessed tubes maybe tinned before being inserted in the mold, and this preparation is desirable if brass or other metal that will alloy with tin is used for completing the knob-shank.
- the improvement substantially as before set forth in the art of manufacturing knob shanks consisting of the following three operations, viz, first, the production of the recessed angular tube of sheet metal; second, the fitting of the said tube with a core; and, third, the casting of melted metal upon said tube.
Description
l. P. ADAMS. Manufacture 0f Metal Knob Shanks.
N0 165 972 Patentedluly 27,1875.-
N.PETERS PHDTDUTHOGRAFNER, WASHINGTON. U C
UNITED STATES JOHN POPKIN ADAMS, OF BROOKLYN, ASSIGNOR OF ONE-HALF HIS RIGHT TO JAMES A. RUTHVEN, OF NEW YORK, N. Y.
IMPROVEMENT IN THE MANUFACTURE OF METAL KNOB-SHANKS.
Specification forming part of Letters Patent No. 165,972, dated July 27, 1875; application filed April 7, 1875.,
To all-whom it may concern:
Be it known that I, JOHN PoPKIN ADAMS, of Brooklyn, in the county of Kings and State of New York, have made an invention of new and useful Improvements in the Art of Manufacturing Recessed Knob-Shanks, and of a new angular tube therefor; and that the following is a full, clear, and exact description and specification of the same.
The object of my invention is ,to enable recessed knob-shanks, such as are described in the Letters Patent granted to Tuthill, Og-
den, and Slawson, No. 89,708, to be manufactured at a low cost and of great accuracy. To this end the first part of my 1" vention consists of the manufacture of such knob-shanks by the following operations performed in the order in which they are stated, viz: First, the production of an angular recessed tube of sheet metal, having the form internally of the knob-spindle, but with a shouldered recess at one side for engagement with the spindle spring, by first indenting the recess in the extended sheet metal and then bending the same into an angular tube. Second, the filling of this recessed tube with a core so as to prevent the entrance of melted metal into the tube and recess. Third, the casting of a mass of metal upon the said recessed knob-shank.
In order that my invention may be fully understood, 1 have represented in the accompanying drawing a recessed knob-shank such as is produced by my invention.
Figure 1 represents a central longitudinal section of said knob-shank. Fig. 2 represents a transverse section of the same. Fig. 3 represents a view in perspective of a re cessed angular tube such as is used in the manufacture of said knob-shank.
The first operation is the production of the recessed angular .tube represented at Fig. 3 of the drawings. This is made of sheet metal, by preference of sheet iron, which, after being cut to the required form, is stamped between dies so as to indent a recess at a; it is then bent into a square tube, and is stamped a second time in dies with a square mandrel inserted in it so asto make its bore accurate.
The recessed tube thus produced is fitted with a core, which may be a piece of wroughtiron somewhat longer than its bore, or may be made of core-sand, stiffened with a wire core bar. The tube with its core is inserted in a mold having a cavity of the form of the knob-shank to be produced. Then melted metal is poured into the mold so as to fill the same. The metal which I have used for this purpose is cast-iron.
After the recessed shank has been thus produced it should be drilled, as at b, so as to make an opening for the insertion of a pin for disengaging the spring of the knob-spindle when this operation is necessary.
It will be perceived that inasmuch as the sheet metal which forms the tube is flat before it is made into the tube, it is then easy to indent into it the recess a in the precise position relatively to the end of the shank which it is to occupy in the knob-shank; also, that by thus forming the recess in an extended piece of sheet metal which is subsequently bent into a tube and incorporated in the knob-spindle, the cost of making a recess in the knob-spindle by working in the bore thereof through the open end of the bore is avoided.
The result of the invention is that recessed knob-shanks can be produced at a sufficiently low cost to enable them to be sold in the market.
If deemed expedient, the recessed tubes maybe tinned before being inserted in the mold, and this preparation is desirable if brass or other metal that will alloy with tin is used for completing the knob-shank.
I claim as my invention- 1. The improvement substantially as before set forth in the art of manufacturing knob shanks consisting of the following three operations, viz, first, the production of the recessed angular tube of sheet metal; second, the fitting of the said tube with a core; and, third, the casting of melted metal upon said tube.
2. The recessed angular tube of indented and bent sheet metal substantially as before set forth, the same being a new article of manufacture.
Witness my hand this 10th day of March,
JOHN POPKIN ADAMS. Witnesses:
GEORGE A. BURNELL, ARTHUR J. BAILEY.
Publications (1)
Publication Number | Publication Date |
---|---|
US165972A true US165972A (en) | 1875-07-27 |
Family
ID=2235381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US165972D Expired - Lifetime US165972A (en) | Improvement in the manufacture of metal knob-shanks |
Country Status (1)
Country | Link |
---|---|
US (1) | US165972A (en) |
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0
- US US165972D patent/US165972A/en not_active Expired - Lifetime
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