US29738A - Improvement in casting cylinders for thrashing-machines - Google Patents
Improvement in casting cylinders for thrashing-machines Download PDFInfo
- Publication number
- US29738A US29738A US29738DA US29738A US 29738 A US29738 A US 29738A US 29738D A US29738D A US 29738DA US 29738 A US29738 A US 29738A
- Authority
- US
- United States
- Prior art keywords
- holes
- thrashing
- machines
- pattern
- 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
- 238000005266 casting Methods 0.000 title description 12
- 210000003467 Cheek Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
Definitions
- the nature of our invention consists in casting the cylinders of thrashing-machines with rectangular tapering holes in them for the reception of the teeth, as hereinafter more particularly set forth.
- Cylinders of thrashing-machines have heretofore been cast either with round holes, which required to be afterward squared or rendered rectangular by means of punches and chisels a difficult and expensive process-or without any holes for the teeth, which had to be inserted in holes expressly drilled for their reception.
- XVe have succeeded, by a peculiar construction and management of the iiask and chills, in producing rectangular and tapering holes sufficiently accurate in position and dimensions to receive theteeth, which are fitted without the holes being in any way altered after they leave the mold. This is a great economy of time, labor, and expense, and a valuable improvement in the art of casting.
- Fig. 1 represents the entire iiask, which consists of the cope C, the cheeks C, the bottom board, B, and the nowel N.
- trunnions T On the sides of the ilask are trunnions T for turning the iiask over in drawing the pattern.
- the pattern is made in two parts, P and P', and is united at the shoulder s, the parts being held in exact position by means of pins. (Shown in Fig. 2.)
- the pattern may either be perforated with rectangular and tapering holes h of the exact size and shape, and in the position required in the finished cylinder, or it may have round holes i for the reception of the pin projecting from the end or the ehillp, Fig. 5.
- the lower half of the pattern is exactly like the upper half.
- the process is as follows: The pattern being placed in the ask, the chills p are inserted through the holes h in the flask, andthe pins a on their ends are received. by the round holes 'i in the pattern. One chill is used for each hole that is to be made in the cylinder. The flask is then rammed inthe usual way, after which the chills p are removed and the pattern drawn. The pattern is drawn one-half from each end of the ilask, which is turned on its trunnions T for that purpose.
Description
UNITED STATES PATENT OEricE.
LUTHER \VHITMAN, OF W'INTHROP, MAINE, AND EZRA VHITMAN, OF BALTIMORE, MARYLAND.
IMPROVEMENT IN CASTING CYLINDERS FOR THRASHING-MACHINES.
Specification forming part of Letters Patent No. 29,73, dated August 21, 1860.
To all whom it my concern:
Be it known that we, LUTHER WHITMAN, of Vinthrop, in the State of Maine, and EZR-A VHITMAN,of Baltimore, in the State of Maryland, have invented an Improved Method of Casting the Cylinders of Thrashing-Machines; and we do hereby declare the following to be aeorrect description of the same, reference being had to the accompanying drawings, in which- Figure l is a perspective View of the iiask complete. Fig. 2 is a perspective view of the pattern. Fig. 3 is a vertical central section of the flask with the pattern in place. Figs. t and 5 are views of the chills.
The nature of our invention consists in casting the cylinders of thrashing-machines with rectangular tapering holes in them for the reception of the teeth, as hereinafter more particularly set forth.
Cylinders of thrashing-machines have heretofore been cast either with round holes, which required to be afterward squared or rendered rectangular by means of punches and chisels a difficult and expensive process-or without any holes for the teeth, which had to be inserted in holes expressly drilled for their reception. XVe have succeeded, by a peculiar construction and management of the iiask and chills, in producing rectangular and tapering holes sufficiently accurate in position and dimensions to receive theteeth, which are fitted without the holes being in any way altered after they leave the mold. This is a great economy of time, labor, and expense, and a valuable improvement in the art of casting.
To enable others to make use of our improved method, we will proceed to describe it with reference to the accompanying drawings, in which the same part is marked by the same letter of reference wherever it 0ocurs.
In the drawings, Fig. 1 represents the entire iiask, which consists of the cope C, the cheeks C, the bottom board, B, and the nowel N. On the sides of the ilask are trunnions T for turning the iiask over in drawing the pattern. The pattern is made in two parts, P and P', and is united at the shoulder s, the parts being held in exact position by means of pins. (Shown in Fig. 2.) The pattern may either be perforated with rectangular and tapering holes h of the exact size and shape, and in the position required in the finished cylinder, or it may have round holes i for the reception of the pin projecting from the end or the ehillp, Fig. 5. The lower half of the pattern is exactly like the upper half.
To cast a cylinder in this iiask the process is as follows: The pattern being placed in the ask, the chills p are inserted through the holes h in the flask, andthe pins a on their ends are received. by the round holes 'i in the pattern. One chill is used for each hole that is to be made in the cylinder. The flask is then rammed inthe usual way, after which the chills p are removed and the pattern drawn. The pattern is drawn one-half from each end of the ilask, which is turned on its trunnions T for that purpose. Vhen the pattern is removed, the chills p, having tapering ends of the exact shape of the holes it is desired to make in the cylinder, are inserted in the holes 7L of thc fiask, and abut against the core within it. The flask being thus completed, the metal is poured and forms a cylinder in a single piece, perforated with the proper number of rectangular tapering holes in the ,exact positions required for the reception of the thrasher-teeth. The chills are now removed andthe casting drawn, which completes the operation. It will readily be seen that the same result could be attained by having the rectangular tapering holes in the pattern, as at h h, Fig. 2, and inserting the chills p', Fig. 5, in them before rammming the flask; but we have found the method above described to be the best in practice. Straight holes-i. e., holes with parallel sides-can be made in the same way, but with more difficulty in drawing the chills. Such holes are, moreover, inferior to tapering ones, inasmuch as the latter afford the means of tightening the teeth by drawing them up by nuts on the interior of thevcylinder.
Ve believe, after long experience as extensive manufacturers of agricultural machinery, that no thrashing-cylinder cast in a single piece has ever been cast with holes in it of any shape for the reception of the teeth.
Having thus fully described our invention, The above speeieation signed and WitA what We claim, and desire to secure by Letnessed this 13th day of April, A. D. 1858. ters Patent, is-
i ,7' -T The method hereinbefoie described of eastgfUxqlglpxlTMAm ing thrashing-machine Cylinders in a single Y l piece, and having'1 rectangular tapering holes lVitnesses:
in them for the reception of the thrashing- JNO. G. THOMPSON,
tee'l-h, as set forth. CITAS. F. STANSRURY.
Publications (1)
Publication Number | Publication Date |
---|---|
US29738A true US29738A (en) | 1860-08-21 |
Family
ID=2099389
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US29738D Expired - Lifetime US29738A (en) | Improvement in casting cylinders for thrashing-machines |
Country Status (1)
Country | Link |
---|---|
US (1) | US29738A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4734089A (en) * | 1976-05-14 | 1988-03-29 | Baxter Travenol Laboratories, Inc. | Centrifugal blood processing system |
US4806252A (en) * | 1987-01-30 | 1989-02-21 | Baxter International Inc. | Plasma collection set and method |
US4834890A (en) * | 1987-01-30 | 1989-05-30 | Baxter International Inc. | Centrifugation pheresis system |
US4940543A (en) * | 1987-01-30 | 1990-07-10 | Baxter International Inc. | Plasma collection set |
US5529691A (en) * | 1987-01-30 | 1996-06-25 | Baxter International Inc. | Enhanced yield platelet collection systems and method |
US5690835A (en) * | 1991-12-23 | 1997-11-25 | Baxter International Inc. | Systems and methods for on line collection of cellular blood components that assure donor comfort |
US5790183A (en) * | 1996-04-05 | 1998-08-04 | Kerbyson; Gerald M. | High-resolution panoramic television surveillance system with synoptic wide-angle field of view |
US5993370A (en) * | 1987-01-30 | 1999-11-30 | Baxter International Inc. | Enhanced yield collection systems and methods for obtaining concentrated platelets from platelet-rich plasma |
US6007725A (en) * | 1991-12-23 | 1999-12-28 | Baxter International Inc. | Systems and methods for on line collection of cellular blood components that assure donor comfort |
US6071423A (en) * | 1987-01-30 | 2000-06-06 | Baxter International Inc. | Methods of collecting a blood plasma constituent |
US20030102272A1 (en) * | 1987-01-30 | 2003-06-05 | Baxter International Inc. | Blood processing systems and methods |
-
0
- US US29738D patent/US29738A/en not_active Expired - Lifetime
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4734089A (en) * | 1976-05-14 | 1988-03-29 | Baxter Travenol Laboratories, Inc. | Centrifugal blood processing system |
US4806252A (en) * | 1987-01-30 | 1989-02-21 | Baxter International Inc. | Plasma collection set and method |
US4834890A (en) * | 1987-01-30 | 1989-05-30 | Baxter International Inc. | Centrifugation pheresis system |
US4940543A (en) * | 1987-01-30 | 1990-07-10 | Baxter International Inc. | Plasma collection set |
US5529691A (en) * | 1987-01-30 | 1996-06-25 | Baxter International Inc. | Enhanced yield platelet collection systems and method |
US5993370A (en) * | 1987-01-30 | 1999-11-30 | Baxter International Inc. | Enhanced yield collection systems and methods for obtaining concentrated platelets from platelet-rich plasma |
US6071423A (en) * | 1987-01-30 | 2000-06-06 | Baxter International Inc. | Methods of collecting a blood plasma constituent |
US20030102272A1 (en) * | 1987-01-30 | 2003-06-05 | Baxter International Inc. | Blood processing systems and methods |
US5690835A (en) * | 1991-12-23 | 1997-11-25 | Baxter International Inc. | Systems and methods for on line collection of cellular blood components that assure donor comfort |
US6007725A (en) * | 1991-12-23 | 1999-12-28 | Baxter International Inc. | Systems and methods for on line collection of cellular blood components that assure donor comfort |
US6071421A (en) * | 1991-12-23 | 2000-06-06 | Baxter International Inc. | Systems and methods for obtaining a platelet suspension having a reduced number of leukocytes |
US5790183A (en) * | 1996-04-05 | 1998-08-04 | Kerbyson; Gerald M. | High-resolution panoramic television surveillance system with synoptic wide-angle field of view |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US29738A (en) | Improvement in casting cylinders for thrashing-machines | |
US30054A (en) | Improvement sn molds for rifle-balls | |
US32527A (en) | Improved nail or screw head | |
DE1433935A1 (en) | Modeling device for foundry purposes | |
US32399A (en) | Improvement in patterns for thimble-skeins | |
US28261A (en) | Improvement in molding iron pipes | |
US30044A (en) | Improvement in casting pipe | |
US30525A (en) | Improvement in molding cast-iron wheels | |
JPS5695446A (en) | Chill block positioning jig | |
US38047A (en) | Improvement in molds for casting horseshoes | |
US47937A (en) | Improvement in molding cores | |
US580928A (en) | Molding fence-posts and making cores for same | |
US22830A (en) | Himoffi | |
US217296A (en) | Improvement in combined chaplet and anchor for horizontal cores | |
US39189A (en) | Improvement in casting boxes for carriage-axles | |
US18111A (en) | Improvement in casting bearings in iron wheels | |
DE364609C (en) | Method of making casting molds | |
US682486A (en) | Molding apparatus. | |
US32465A (en) | Improvement in molding stove-griddles | |
US221741A (en) | Improvement in cores for casting puppets | |
US16688A (en) | Improvement in casting skeins for wagons | |
US28277A (en) | Improvement in molding shot and shells | |
US29668A (en) | Improvement in casting screw-augers | |
US21319A (en) | Manufacturing shears | |
US24527A (en) | Improvement in patterns for casting stove-covers |