US1717388A - Method of making screws - Google Patents

Method of making screws Download PDF

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Publication number
US1717388A
US1717388A US293081A US29308128A US1717388A US 1717388 A US1717388 A US 1717388A US 293081 A US293081 A US 293081A US 29308128 A US29308128 A US 29308128A US 1717388 A US1717388 A US 1717388A
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US
United States
Prior art keywords
plating
making screws
blank
screws
slotting
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
Application number
US293081A
Inventor
George E Keeler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Keeler Brass Co
Original Assignee
Keeler Brass Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Keeler Brass Co filed Critical Keeler Brass Co
Priority to US293081A priority Critical patent/US1717388A/en
Application granted granted Critical
Publication of US1717388A publication Critical patent/US1717388A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B21K1/46—Making machine elements bolts, studs, or the like with heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/56—Making machine elements screw-threaded elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49982—Coating
    • Y10T29/49986—Subsequent to metal working

Definitions

  • Fig. 1 is a side view of a headed screw blank, the head being of the so-called oval type, other standard types of head being indicated by dotted lines.-
  • Fig. 2 is a side view of a screw blank with the head slotted.
  • Fig. 3 is a longitudinal section of a slotted screw blank with the plating thereon, the thickness of the plating being exaggerated for convenience in illustration.
  • Fig. 4 is a longitudinal section of a completed screw referred to by my-method.
  • the first step being the forming of the headed blank 1 shown in Fig.1.
  • the second step is the slotting step, as 2.
  • the third step is the plating, the plating being indicated at 3.
  • the fourth step is the polishing which might by some be regarded as a part of the plating step.
  • the polishing may be accom plished by tumbling or other well known methods.
  • the fifth or final step is the cutting of the threads 4 in the plated blank, this operation 1928. Serial No, 293,081.
  • the screw blanks maybe formed either by the solid die header or the so-called open die header, the open die header being less accurate in its work but more rapid and requiring the so-called shaving operation, that is, the flash or bur'must be trimmed off.
  • Screws may be rapidly produced by my improved methodand they are superior in that the plating may be highly polished and the threads are not dulled thereby.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)

Description

June 18, 1929. c. E. KEELER METHOD OF MAKING SCREWS Filed July 16, 1928 INVENTOR George E. Keeler I Patented June 18, 1929.
UNITED STATES PATENT OFFICE.
GEORGE E. KEELER,
OF GRAND RAPIDS, MICHIGAN, ASSIGNOR TO KEELER BRASS COMPANY, OF GRAND RAPIDS, MICHIGAN.
METHOD OF MAKING SCREWS.
Application filed July 16,
A structure Which is a preferred embodiment of my invention is illustrated in the accompanying drawing, in which:
Fig. 1 isa side view of a headed screw blank, the head being of the so-called oval type, other standard types of head being indicated by dotted lines.-
Fig. 2 is a side view of a screw blank with the head slotted.
Fig. 3 is a longitudinal section of a slotted screw blank with the plating thereon, the thickness of the plating being exaggerated for convenience in illustration.
Fig. 4 is a longitudinal section of a completed screw referred to by my-method.
In the accompanying drawing, I have illustrated the steps of my improved method, the first step being the forming of the headed blank 1 shown in Fig.1. The second step is the slotting step, as 2. The third step is the plating, the plating being indicated at 3. The fourth step is the polishing which might by some be regarded as a part of the plating step. The polishing may be accom plished by tumbling or other well known methods.
The fifth or final step is the cutting of the threads 4 in the plated blank, this operation 1928. Serial No, 293,081.
leaving the shank portion 5 and the head portion 6 with the unbroken plating thereon.
It has heretofore been common. practice to complete the screw and then plate it with a result that the thread was dulled by the plating and also by the polishing. By my method, the threads are left with a clear-cut sharp edge.
The screw blanks maybe formed either by the solid die header or the so-called open die header, the open die header being less accurate in its work but more rapid and requiring the so-called shaving operation, that is, the flash or bur'must be trimmed off.
These steps of heading and slotting may be formed in the usual or any desired manner.
Screws may be rapidly produced by my improved methodand they are superior in that the plating may be highly polished and the threads are not dulled thereby.
Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:
1. The method of making screws consisting of forming the headed blanks, slotting, plating the entire blank, polishing, and threading, as successive steps.
2. The method of making screws consisting 65 of heading, slotting, plating the entire blank, and finally threading.
3. The method of making screws consisting of forming the headed blanks, slotting, plating the entire blank, and threading, as successive steps.
In witness whereof I have hereunto set In hand.
y GEORGE E. KEELER.
US293081A 1928-07-16 1928-07-16 Method of making screws Expired - Lifetime US1717388A (en)

Priority Applications (1)

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US293081A US1717388A (en) 1928-07-16 1928-07-16 Method of making screws

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592100A (en) * 1968-05-09 1971-07-13 Hubbell Inc Harvey Binding screw having electrically insulated head
US4107805A (en) * 1977-05-09 1978-08-22 Gatzek Leo E Rivet making method and rivet
US4713855A (en) * 1985-12-13 1987-12-22 Whyco Chromium Company, Inc. Process for making self-drilling fasteners
US4773111A (en) * 1986-11-12 1988-09-27 Whyco Chromium Company, Inc. Selectively hardened self drilling fasteners and process for making the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592100A (en) * 1968-05-09 1971-07-13 Hubbell Inc Harvey Binding screw having electrically insulated head
US4107805A (en) * 1977-05-09 1978-08-22 Gatzek Leo E Rivet making method and rivet
US4713855A (en) * 1985-12-13 1987-12-22 Whyco Chromium Company, Inc. Process for making self-drilling fasteners
US4773111A (en) * 1986-11-12 1988-09-27 Whyco Chromium Company, Inc. Selectively hardened self drilling fasteners and process for making the same

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