US153196A - Improvement in molding celluloids for dentists and others - Google Patents
Improvement in molding celluloids for dentists and others Download PDFInfo
- Publication number
- US153196A US153196A US153196DA US153196A US 153196 A US153196 A US 153196A US 153196D A US153196D A US 153196DA US 153196 A US153196 A US 153196A
- Authority
- US
- United States
- Prior art keywords
- molding
- celluloid
- dentists
- celluloids
- improvement
- 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
- 229920002160 Celluloid Polymers 0.000 title description 10
- 238000000465 moulding Methods 0.000 title description 6
- 238000000034 method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 241000723346 Cinnamomum camphora Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 229960000846 camphor Drugs 0.000 description 1
- 229930008380 camphor Natural products 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
- B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts
Definitions
- the object of my invention is to soften blank pieces of celluloid intended to be used for dental and other purposes, in order to render them sufficiently plastic to be molded into the form required for the purpose for which they are to be used, and to produce other results, which will be described in this specification, by the use of dry heat, without the intervention of a bath of oil, water, steam, or other substance than hot air, as has hitherto been the practice of using.
- This apparatus consists of a cup oroven, A, a cover and press in one piece, B, a conical loose jacket, 0, and a screw, D, as shown in the accompanying drawing.
- the cup or oven A is cast or otherwise made solid, with lugs on the bottom to serve as legs or to fasten legs to; also, lugs at the top edge to support the loose jacket O.
- the top edge is beveled inwardly to support the cover and press. There may be glazed openings a in the cup to enable the operator to observe the process as it goes on within.
- the outer edge of the cover is beveled below inwardly, so as to lit the beveled surface of the upper edge of the cup or oven.
- the press is made in one piece with the cover, and has its upper part projecting above the same, to give strength and stiffness.
- the sides of the press are so inclined in relation to each other, that at the top they tit accurately within the cup or oven, and at the lower end are at least an eighth of an inch distant from the interior surface of the same.
- the lower ends of the sides are connected by a piece or bottom which serves as a bed for the flask containing the celluloid-blank.
- This bottom ofthepress is at least three-eighths of an inch from the bottom of the cup or oven.
- the press is thus suspended in the cup or oven.
- the screw is arranged as shown in the drawing, as clamp-screws usually are, and is operated by a handle, while the press is held firm by a suitable wrench.
- the loose jacket is of conical shape, with the upper edge turned over inwardly tofit on the shoulders of the upper lugs, so that it is suspended thereby, and serves to bring or conduct the heat from the flame below in close contact with the exterior surface of the cup or oven. This flame may be obtained by the use. of gas, oil, alcohol, or other suitable agent.
- All the apparatus, except the screw and loose jacket, should be made of brass or other metal that does not readily oxidize...
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Dental Preparations (AREA)
Description
R. F. HUNT. Molding Celluloid for Dentists and Others] N0j153,196; Patentedluly21,1874.
WWW. (XX/5&7
THE GRAPHIC CO FHDTD-LlTH.39 841 PARK FLADE,N.Y.
UNITED STATES PATENT QFFICE.
IMPROVEMENT IN MOLDING CELLULOIDS FOR DENTISTS AND OTHERS.
Specification forming part of Letters Patent No.
153,196, dated July 21, 1874; application filed June 29, 1874.
To all "whom it may concern:
Be it known that I, It. FINLEY HUNT, of \Vashington, District of Columbia, have invented an Apparatus for Softening Blank Pieces of Celluloid, of which the following is a specification The object of my invention is to soften blank pieces of celluloid intended to be used for dental and other purposes, in order to render them sufficiently plastic to be molded into the form required for the purpose for which they are to be used, and to produce other results, which will be described in this specification, by the use of dry heat, without the intervention of a bath of oil, water, steam, or other substance than hot air, as has hitherto been the practice of using.
To enable those skilled in the art to make and use my invention, I will proceed to describe the same with reference to the acco1npanyin g drawings, in which- Figure 1 represents an exterior view of the apparatus I employ and Fig. 2 represents a vertical section through the same.
To accomplish the above-named object, I use the apparatus herein described. This apparatus consists of a cup oroven, A, a cover and press in one piece, B, a conical loose jacket, 0, and a screw, D, as shown in the accompanying drawing. The cup or oven A is cast or otherwise made solid, with lugs on the bottom to serve as legs or to fasten legs to; also, lugs at the top edge to support the loose jacket O. The top edge is beveled inwardly to support the cover and press. There may be glazed openings a in the cup to enable the operator to observe the process as it goes on within. The outer edge of the cover is beveled below inwardly, so as to lit the beveled surface of the upper edge of the cup or oven. These beveled surfaces are ground together, so as to make a close joint. The press is made in one piece with the cover, and has its upper part projecting above the same, to give strength and stiffness. The sides of the press are so inclined in relation to each other, that at the top they tit accurately within the cup or oven, and at the lower end are at least an eighth of an inch distant from the interior surface of the same.
The lower ends of the sides are connected by a piece or bottom which serves as a bed for the flask containing the celluloid-blank. This bottom ofthepress is at least three-eighths of an inch from the bottom of the cup or oven. The press is thus suspended in the cup or oven. The screw is arranged as shown in the drawing, as clamp-screws usually are, and is operated by a handle, while the press is held firm by a suitable wrench. The loose jacket is of conical shape, with the upper edge turned over inwardly tofit on the shoulders of the upper lugs, so that it is suspended thereby, and serves to bring or conduct the heat from the flame below in close contact with the exterior surface of the cup or oven. This flame may be obtained by the use. of gas, oil, alcohol, or other suitable agent.
All the apparatus, except the screw and loose jacket, should be made of brass or other metal that does not readily oxidize...
I am aware that heat has been heretofore used to render the celluloid-blanks plastic tion with a bath of oil, water, steam, or other fluid. My invention of using the dry heat, without the intervention of these substances, is quicker, cleaner, and more economical than the methods hitherto used, and at the same time seasons and hardens the molded celluloid better by vol-utilizing more rapidly and driving off the camphor, which is the solvent of the celluloid.
What I claim as my invention is- 1. The process of softening and molding celluloid or celluloid-blanks, for dental and other purposes, with dry heat, by means substantially such as herein described.
2. The herein-described apparatus for softening and molding celluloid or celluloidinclosed chamber and a press, in and by means of which dry heat is applied by conduction to the flask or mold containing the celluloid, substantially as herein described and for molding, but it has been used in connecblanks, consisting essentially of a combined
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US153196A true US153196A (en) | 1874-07-21 |
Family
ID=2222607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US153196D Expired - Lifetime US153196A (en) | Improvement in molding celluloids for dentists and others |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US153196A (en) |
-
0
- US US153196D patent/US153196A/en not_active Expired - Lifetime
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