US48022A - Improvement in casting shot and shell - Google Patents
Improvement in casting shot and shell Download PDFInfo
- Publication number
- US48022A US48022A US48022DA US48022A US 48022 A US48022 A US 48022A US 48022D A US48022D A US 48022DA US 48022 A US48022 A US 48022A
- Authority
- US
- United States
- Prior art keywords
- shell
- mold
- improvement
- shot
- casting shot
- 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
- 238000005266 casting Methods 0.000 title description 8
- 239000002184 metal Substances 0.000 description 8
- 239000004927 clay Substances 0.000 description 2
- 229910052570 clay Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/04—Centrifugal casting; Casting by using centrifugal force of shallow solid or hollow bodies, e.g. wheels or rings, in moulds rotating around their axis of symmetry
Definitions
- a dish, saucer, or table Ais shown as mounted on a vertical axis,B, having its bearings in a stout frame, C, and being provided with a pulley, D, around which a band may pass, to give it the requisite rotation 5 or it may be rotated by gearing, if preferred.
- the mold E is thus caused to roll about in various directions until the metal has been properly distributed and become set. It is obvious that a preponderance of weight at any point of the circumference of the mold would tend to depress that point, and thus alter the axis of rotation of the mold, thus insuring the uniform distribution of the metal in the shell.
- the mold can be made in heinispherical or other shaped sections, so as to permit the shell to be removed. It is obvious that when shot are cast instead of shell, the same law of rotation will produce an equalization ofthe density of all parts thereof.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adornments (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Casting Devices For Molds (AREA)
Description
NITED STATES PATENT OFFICE.
THOS. J. LOVEGROVE, OF PHILADELPHIA, PA., ASSIGNOR TO HIMSELF AND HENRY BALDWIN, JR., OF SAME PLACE.
Specification forming part of Letters Patent No. 48,00"
To all whom t may concern:
Be itknown that I, THOMAS J. Lo'vEG-Rovn, of the city and county of Philadelphia, in the State of Pennsylvania, have invented a new and useful Improvement in Casting Shot or Shell, of which the following is a full, clear, and exact description, reference being had to thcacoompanying drawings, which make part of this specification, and in which- Figure l represents a view in elevation of my improved apparatus for carrying out the objects of my invention, and Fig. 2 a vertical central section through the same at right angles to the position shown in Fig. 1.
It is the object of my invention to cast shot and shell of uniform density, andthus promote the accuracy of their Hight; and to this end my improvement consists in the use of aspherical mold placed loosely on a dish or table, to which al spinning motion is imparted, thus leaving the mold free to revolve in any direction.
In the accompanying drawings, which show one way of effecting the object of my invention, a dish, saucer, or table, Ais shown as mounted on a vertical axis,B, having its bearings in a stout frame, C, and being provided with a pulley, D, around which a band may pass, to give it the requisite rotation 5 or it may be rotated by gearing, if preferred. I prefer to make the dish A with a convex projection in the center, sloping outward toward the circumference, as shown in Fig. 2, as by this form of construction the spherical moldE is always kept near the circumference when accidental interruptions to its rotation may occur.
The operation of casting is as follows: The
desired quantity of molten metal having been poured into the mold E through a gate, (andi the gate closed with chalk or clay to prevent its escape,) the mold is placed upon the dish A, to which a rotary movementis imparted.
dated May 30, 1865.
The mold E is thus caused to roll about in various directions until the metal has been properly distributed and become set. It is obvious that a preponderance of weight at any point of the circumference of the mold would tend to depress that point, and thus alter the axis of rotation of the mold, thus insuring the uniform distribution of the metal in the shell. The mold can be made in heinispherical or other shaped sections, so as to permit the shell to be removed. It is obvious that when shot are cast instead of shell, the same law of rotation will produce an equalization ofthe density of all parts thereof.
It has been attempted heretofore to cast shells by using a mold revolving on a fixed axis; but this plan failed to secure the desired uniform thickness or density, owing to the fact that there was necessarily a xed point in the mold around which the metal could settle without disturbance-viz., the axis of motion. This objection is, however, entirely obviated by my improvement, as the axis of vrotation of my mold is constantly changing.
What I claim as my invention, and desire to secure by Letters Patent, is-
l. Casting shot and shell in aspherical mold, and afterward rotating said mold on a concave or dished surface, substantially in the manner described, for the purpose set forth.
2. The combination of a rotating concave table having a raised conical center with a spherical mold rolling freely thereon, as described.
In testimony whereof I have hereunto subscribed my name.
I T. J'. Lovnenovn.
Witnesses:
vM. D. BALDWIN, HENRY BALDWIN.
Publications (1)
Publication Number | Publication Date |
---|---|
US48022A true US48022A (en) | 1865-05-30 |
Family
ID=2117577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US48022D Expired - Lifetime US48022A (en) | Improvement in casting shot and shell |
Country Status (1)
Country | Link |
---|---|
US (1) | US48022A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2946092A (en) * | 1958-08-04 | 1960-07-26 | Barr Rubber Products Company | Apparatus for rotationally distributing a liquid charge within a mold |
-
0
- US US48022D patent/US48022A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2946092A (en) * | 1958-08-04 | 1960-07-26 | Barr Rubber Products Company | Apparatus for rotationally distributing a liquid charge within a mold |
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