US120096A - Improvement in making rubber stereotypes - Google Patents
Improvement in making rubber stereotypes Download PDFInfo
- Publication number
- US120096A US120096A US120096DA US120096A US 120096 A US120096 A US 120096A US 120096D A US120096D A US 120096DA US 120096 A US120096 A US 120096A
- Authority
- US
- United States
- Prior art keywords
- stereotypes
- mold
- improvement
- press
- making rubber
- 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
- 229910001369 Brass Inorganic materials 0.000 description 6
- 239000010951 brass Substances 0.000 description 6
- 239000011505 plaster Substances 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 4
- 239000004636 vulcanized rubber Substances 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000011507 gypsum plaster Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
- B29C33/3857—Manufacturing moulds, e.g. shaping the mould surface by machining by making impressions of one or more parts of models, e.g. shaped articles and including possible subsequent assembly of the parts
Definitions
- My apparatus consists of a press adapted for the application to it of dry heat, and constructed with an extended bed or table, on which the mold may be set to dry.
- the said mold consists of a bed of plaster, Contained within an inclosing-rim or chase of brass and the matrix may be formed in the face of the said plaster by means of common type.
- the entire press is constructed of brass to adapt it for the more free conduction of heat.
- Figure l is a longitudinal section of the apparatus.
- Fig. 2 is a transverse section thereof at as m, Fig. 1, having the mold I and rubber sheet K in place.
- Fig. 3 is aperspective view of the mold detached.
- the mold In applying the apparatus I form the mold with plaster in the way that stereotype-molds are made.
- the mold thus produced is placed on the table H to dry, the platen O is screwed down in contact with the bed B, and the lamp G placed beneath in order to heat the press. This being accomplished, a piece of the necessary size cut from the sheet of soft vulcanized-rubber composition is laid upon the face of the mold, and the latter placed within the press, a piece of paper being placed over the rubber sheet.
- the platen I) is nowscrewed down, forcing the rubber into all the cavities of the matrix, so as to produce a sharp and accurate impression in relief.
- the rubber type or stamp After remaining thus within the heated press for a limited period, say ten minutes, the rubber type or stamp will be completely and permanently formed, and may after cooling be taken out of the mold and applied to the face of a block or stock of suitable form for use.
- the entire press and the table H and chase J are constructed of brass to adapt them to take the heat more readily and uniformly.
Description
HENRY u. PERKY. Making Rubber Stereotypes.
' Patented Oct. 1
:NVFNTORQ W 0}? A T E ST. 7% flaw,
PATENT OFFICE.
HENRY D. PERKY, OF WASHINGTON, DISTRICT OF COLUMBIA.
IMPROVEMENT IN MAKING RUBBER STEREQTVPES.
Specification forming part of Letters Patent No. 120,096, dated October 17, 1871.
To all whom it may concern:
Be it known that I, HENRY D. PERKY, of the city of Washington, in the county of Washington, District of Columbia, have invented a certain Improved Method of Producing Flexible Forms for Printing, of I which the following is a specification My apparatus consists of a press adapted for the application to it of dry heat, and constructed with an extended bed or table, on which the mold may be set to dry. The said mold consists of a bed of plaster, Contained within an inclosing-rim or chase of brass and the matrix may be formed in the face of the said plaster by means of common type. The entire press is constructed of brass to adapt it for the more free conduction of heat.
In the drawing, Figure l is a longitudinal section of the apparatus. Fig. 2 is a transverse section thereof at as m, Fig. 1, having the mold I and rubber sheet K in place. Fig. 3 is aperspective view of the mold detached.
A represents the frame; B, the bed; 0, the platen; D, the screw; and E, the hand-wheel of a press. These parts may be of any common form. This press is supported on feet F, so as to admit beneath the bed a lamp G for the purpose of heating it. From the bed extends on one side a shelf or table, H, on which the mold is placed to dry, while the press is being heated. I represents the body of the mold, formed of plaster of Paris or other suitable material; and J a metallic rim or chase,'within which it is contained. K is the sheet of rubber composition, upon which the impression is taken in relief.
In applying the apparatus I form the mold with plaster in the way that stereotype-molds are made. The mold thus produced is placed on the table H to dry, the platen O is screwed down in contact with the bed B, and the lamp G placed beneath in order to heat the press. This being accomplished, a piece of the necessary size cut from the sheet of soft vulcanized-rubber composition is laid upon the face of the mold, and the latter placed within the press, a piece of paper being placed over the rubber sheet. The platen I) is nowscrewed down, forcing the rubber into all the cavities of the matrix, so as to produce a sharp and accurate impression in relief. After remaining thus within the heated press for a limited period, say ten minutes, the rubber type or stamp will be completely and permanently formed, and may after cooling be taken out of the mold and applied to the face of a block or stock of suitable form for use.
The entire press and the table H and chase J are constructed of brass to adapt them to take the heat more readily and uniformly.
I claim as my invention- The process herein described for producing flexible printing-forms from vulcanized rubber composition by the combined agency of pressure and dry heat, applied as above set ibrth.
Witnesses: HENRY D. PERKY.
OOTAVIUS KNIGHT,
WM. H. BRERETON, Jr. (164)
Publications (1)
Publication Number | Publication Date |
---|---|
US120096A true US120096A (en) | 1871-10-17 |
Family
ID=2189543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US120096D Expired - Lifetime US120096A (en) | Improvement in making rubber stereotypes |
Country Status (1)
Country | Link |
---|---|
US (1) | US120096A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040258745A1 (en) * | 2003-04-08 | 2004-12-23 | Toshiya Kai | Pharmaceutical composition containing artificial oxygen carrier |
-
0
- US US120096D patent/US120096A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040258745A1 (en) * | 2003-04-08 | 2004-12-23 | Toshiya Kai | Pharmaceutical composition containing artificial oxygen carrier |
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