US2146A - Improvement in metallic screws - Google Patents
Improvement in metallic screws Download PDFInfo
- Publication number
- US2146A US2146A US2146DA US2146A US 2146 A US2146 A US 2146A US 2146D A US2146D A US 2146DA US 2146 A US2146 A US 2146A
- Authority
- US
- United States
- Prior art keywords
- screws
- improvement
- heads
- molds
- shank
- 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
- 210000001699 lower leg Anatomy 0.000 description 16
- 239000002184 metal Substances 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 238000005266 casting Methods 0.000 description 10
- 229910001369 Brass Inorganic materials 0.000 description 8
- 239000010951 brass Substances 0.000 description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 8
- 229910052725 zinc Inorganic materials 0.000 description 8
- 239000011701 zinc Substances 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 6
- 229910052718 tin Inorganic materials 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N tin hydride Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 6
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 4
- 229910052787 antimony Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 241000271039 Agkistrodon Species 0.000 description 2
- 229910000497 Amalgam Inorganic materials 0.000 description 2
- 241000220010 Rhode Species 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2618—Moulds having screw-threaded mould walls
Definitions
- I T0 @ZZ whoml it may concer/L Be it known that I, JOHN LUTHER, ofVarren, in the county of Bristol and State of Rhode Island, have invented a new and useful I1nprovement in casting composition screws with brass, copper, iron, or other hard metallic heads,with tin, lead, zinc, antimony, or other soft metallic bodies combined, which is described as follows, reference being had to the annexed drawings of the same, making part of this specication.
- Figure l isthe mold ready to be filled; Fig. 2, ahead and shank, and Fig. 3 a screw finished.
- the molds c are made in the usual manner of making molds for casting small articles, and of any convenient size for casting any required number of screws at a single pouring ⁇ of the composition.
- rlhe process is the same in making screws with copper, zinc, iron, or other metallic heads, except that these metals are to be substituted for brass in the operation of casting.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
Description
v UNITED STATES PATENT OFFICE..
JOHN LUTHER, OF VARREN, RHODE ISLAND.
IMPROVEMENT` IN METALLIC SCREWS.
Specification forming part of Letters Patent No. '2. |46, dated .lune 26, 1841.
I T0 @ZZ whoml it may concer/L Be it known that I, JOHN LUTHER, ofVarren, in the county of Bristol and State of Rhode Island, have invented a new and useful I1nprovement in casting composition screws with brass, copper, iron, or other hard metallic heads,with tin, lead, zinc, antimony, or other soft metallic bodies combined, which is described as follows, reference being had to the annexed drawings of the same, making part of this specication.
Figure l isthe mold ready to be filled; Fig. 2, ahead and shank, and Fig. 3 a screw finished.
For screws with brass heads I prepare the pieces of metal intended to 'form the heads of the screws with Shanks, by casting or 'hammering them to a proper shapefrom the metal. A, Fig. 2, represents one of them. I then prepare a composition or amalgam of tin, lead, zinc, and antimouy by melting these metals together in the kettle, and, when in a liquid state, with aladle pouring it into the molds(` previously heated) until they are all nearly filled. I next introduce a shank, A, of a head, B, (previously tinned to cause the composition to adhere,) into the center of each mold c,which shank will of course displace as much of the liquid as the size of the part of the shank immersed, and cause the composition to rise around the shank until it reaches its head or t-he surface of the molds.
The molds c are made in the usual manner of making molds for casting small articles, and of any convenient size for casting any required number of screws at a single pouring` of the composition. When the composition metal has cooled sufficiently to become solid, I apply the molds with the heads to a revolving burr of a common turning-lathe which will polish the heads, and then to a revolving circular saw which will cut the grooves for the screw-driver. I then open the molds and iind a set of strong and perfectly-formed screws such as that represented atD, Fig. 3. rlhe process is the same in making screws with copper, zinc, iron, or other metallic heads, except that these metals are to be substituted for brass in the operation of casting.
Any one of the above-named metals will answer singly, or two of them, and will adhere to the center pin or shank of the head, provided itbe previously tinned for that purpose. y
What I cla-im as my invention, and which I desire to secure by Letters Patent, is
Making cast screws with iron, brass, or copper heads and shanks, while the body and thread are made of tin, lead, zinc, antimony, or any soft metal, or any of these combined.
JOHN LUTHER.
IVit1iesses:
ALFRED BoswoRTH, AMASA MASON.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2146A true US2146A (en) | 1841-06-26 |
Family
ID=2062436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US2146D Expired - Lifetime US2146A (en) | Improvement in metallic screws |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2146A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5518679A (en) * | 1995-01-17 | 1996-05-21 | Sta-Rite Industries, Inc. | Method and apparatus for making a component having interior and exterior threads |
-
0
- US US2146D patent/US2146A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5518679A (en) * | 1995-01-17 | 1996-05-21 | Sta-Rite Industries, Inc. | Method and apparatus for making a component having interior and exterior threads |
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