US164764A - Improvement in dies for forming screw-threads - Google Patents
Improvement in dies for forming screw-threads Download PDFInfo
- Publication number
- US164764A US164764A US164764DA US164764A US 164764 A US164764 A US 164764A US 164764D A US164764D A US 164764DA US 164764 A US164764 A US 164764A
- Authority
- US
- United States
- Prior art keywords
- threads
- dies
- improvement
- forming screw
- die
- 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
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000136 polysorbate Polymers 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
- B21D39/20—Tube expanders with mandrels, e.g. expandable
Definitions
- My invention relates to an improvement in dies for the purpose of stamping screw-threads upon metallic collars for lamps and other articles, as will be more fully described hereafter.
- the accompanying drawings represent my invention.
- A represents a steel block, with a circular cavity, a, narrowing toward the bottom.
- the die 13 which consists of three parts, C, which may be taken apart, to allow the collar, which is placed over it, to be taken out after it has been stamped.
- a screwthread, I On the inside of the upper part of the cylindrical opening in the center of this die B is a screwthread, I), which corresponds to another screwt-hread, e, upon the outside of the upper part of the die E, which has its place in the cylin-
- the die E consists of four parts, two of which, (I, occupy, at opposite sides of the circumference, nearly onehalf each of the space, leaving between them two vacant places opposite to each other, to be filled by the pieces g.
- the four pieces (1 g are pivoted at the bottom G, so that they may be made to incline inward toward the central opening 0, left open for the introduction of a steel wedge, F.
- the die E formed in four pieces, all of which are pivoted so as to close inward, substantially as described.
Description
F. RHIND.
Patented June 22, 7875.
ENVENTBR:
TNESEEB.
THE GRAPH"; C(LPHOTO LITH.39& 41 PARK PLACEJLY.
.drical opening of the die B.
Unrrnn STATES FRANK RHIND,
AND CLOCK COMPANY, OF
error- Parent or BROOKLYN, new YORK, Assrenon To BRISTOL BRASS BRISTOL, CONNECTICUT.
Specification forming part of Letters Eatent No. 164,764, dated June 522, 1875;
application tiled January 13, 1875.
To all whom it may concern:
Be it known that I, FRANK RHIND, of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Dies for Forming Screw-Threads; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being bad to the accompanying drawings, which form part of this specification.
My invention relates to an improvement in dies for the purpose of stamping screw-threads upon metallic collars for lamps and other articles, as will be more fully described hereafter. The accompanying drawings represent my invention.
A represents a steel block, with a circular cavity, a, narrowing toward the bottom. Into this cavity is placed the die 13, which consists of three parts, C, which may be taken apart, to allow the collar, which is placed over it, to be taken out after it has been stamped. On the inside of the upper part of the cylindrical opening in the center of this die B is a screwthread, I), which corresponds to another screwt-hread, e, upon the outside of the upper part of the die E, which has its place in the cylin- The die E consists of four parts, two of which, (I, occupy, at opposite sides of the circumference, nearly onehalf each of the space, leaving between them two vacant places opposite to each other, to be filled by the pieces g. The four pieces (1 g are pivoted at the bottom G, so that they may be made to incline inward toward the central opening 0, left open for the introduction of a steel wedge, F.
When the collar is placed over the die 13, its inside, upon which the scrcw-threzul is to be stamped, will be found between the screwthreadsupon the dies B and E, the latter of which, having movable sides, will yield inward, so as to make the placing and removing of the collar easy. The steel wedge, having been placed in the center of the die E, is now forced downward, whereby the parts of I, and 1G provided with screw-threads are brought to bear upon that part of the. collar placed be tween them upon which the impression is to be made. o
By thus stamping the threads, not only can lighter or thinner metal be used, but the whole operation is performed much more quickly and cheaply than heretofore.
Having thus described my invention, 1' claim--.
1. The combination of the recessed block A, divided dies 13 and E, and wedge F, substantially as shown.
2. The die E, formed in four pieces, all of which are pivoted so as to close inward, substantially as described.
In testimony that I claim the foregoing I have hereunto set my hand.
FRANK RHIND.
Witnesses:
JAMES C. CLoYD, lIORA'ilO 1*. Avnn'iLL.
Publications (1)
Publication Number | Publication Date |
---|---|
US164764A true US164764A (en) | 1875-06-22 |
Family
ID=2234173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US164764D Expired - Lifetime US164764A (en) | Improvement in dies for forming screw-threads |
Country Status (1)
Country | Link |
---|---|
US (1) | US164764A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3056197A (en) * | 1960-02-17 | 1962-10-02 | Scovill Manufacturing Co | Method of making coupling ferrules |
-
0
- US US164764D patent/US164764A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3056197A (en) * | 1960-02-17 | 1962-10-02 | Scovill Manufacturing Co | Method of making coupling ferrules |
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