US1107177A - Set-screw. - Google Patents

Set-screw. Download PDF

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Publication number
US1107177A
US1107177A US1911664560A US1107177A US 1107177 A US1107177 A US 1107177A US 1911664560 A US1911664560 A US 1911664560A US 1107177 A US1107177 A US 1107177A
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US
United States
Prior art keywords
screw
point
engaging
hole
plug
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
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Inventor
Ralph E Noble
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.)
MORGAN-GARDNER ELECTRIC Co
MORGAN GARDNER ELECTRIC Co
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MORGAN GARDNER ELECTRIC Co
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Publication date
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Priority to US1911664560 priority Critical patent/US1107177A/en
Application granted granted Critical
Publication of US1107177A publication Critical patent/US1107177A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/005—Set screws; Locking means therefor
    • 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
    • Y10T292/00—Closure fasteners
    • Y10T292/03—Miscellaneous
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7041—Interfitted members including set screw

Definitions

  • RALPH E. NOBLE or CHICAGO, ILLINoIs, AssIeNoR T0 MORGAN-GARDNER ELECTRIC COMPANY, or CHICAGO, ILLINOIS.
  • Figure 1 is a side view of a set screw embodying my invention, such screw having what is commonly known as a cup point and being partly broken away to show the interior construction;
  • Fig. 2 is a similar view of another screw showing-a sharp point orcone point;
  • Fig. 3 is another similar view showing a screw provided with a Hat point, such as commonly used in con-' nection with lathe dogs;
  • Fig. '4 is an end View of the screw shown in Fig. 1;
  • Fig. 5 is a side view of a set screw embodying my invention, such screw having what is commonly known as a cup point and being partly broken away to show the interior construction;
  • Fig. 2 is a similar view of another screw showing-a sharp point orcone point;
  • Fig. 3 is another similar view showing a screw provided with a Hat point, such as commonly used in con-' nection with lathe dogs;
  • Fig. '4 is an end View of the screw shown in Fig. 1;
  • Fig. 5
  • Fig. 6 is another modification showing an oval point
  • Fig. 7 is a further modifi- Specification of :Letters Patent.
  • Fig. 8 shows. a slight modification of a sleeve point
  • Fig. 9 is a further modification showing the point member as formed with a shank and shoulder
  • Fig. 10 is an end view of a chain link and bit showing the setuscrew in position
  • Fig. 11 is a side view of the-chain link.
  • a set screw which may be made of any material'mo-st suitable or desirable for the construction of the screw and providing its engaging end with a plug or engaging portion of difierent material, best adapted to serve forthcpurpose of engagement with the part which the screw is adapted to hold.
  • WhlCh for mining machine purposes is preferably made of machine steelor'steel which is sufficiently touglrand resisting so that the head, is "not apt to be twisted ofi, or the screw otherwise broken or injure in ordinary. use.
  • the end of the screw is pro; vided with a hole or recess 13, into which is fitted an engaging member or plug 14,
  • This plug or engaging member is preferably made to'fitv tightly'in the hole 13, and its inner end is made cone shaped in order to fit the bottom of the hole 13, as such hole would ordinarily be made by drilling into the end of the screw. On account oi? the plug '141- being.
  • theside thereof may be flattened or grooved as indicated'at 16 to allow the air to ass out from'the hole as the plug is being forced into place.
  • walls l'I-of the set screw around the hole 13 are preferably left sufiiciently thick and strongso that'they will not be bulged out ordet'ormed by the engaging plug or point This is particularlydesirable as, it the- .threads are forced out or otherwise deformed at thisend, of the screw, it would be ditiicult to remove the screw or to again use it.
  • the iglu'g or point 14 is preferably hardened suv ciently hard so that it will engage with, and cut into the surface of the bit or other art which it is adapted to hold in place, wit out injury to itself.
  • the screw 18 is provided at its engaging end with a slightly tapered hole 19, having a flat bottom which is adapted to receive the correspondingly tapered sharp pointed engaging member 20.
  • the screw 21, shown in Fig. 3 is provided at'its engaging end with a hole or recess 22, corresponding with the one shown in Fig. 1, but the engaging plug or member 23 ismade with a fiat or dog point.
  • the screw 24, shown in Fig. 5 is recessed at its lower end to receive a flat point engaging member 25.
  • the screw 26 shown in Fig. 6 is shown with an oval pointed engagingpiece 27 as indicated.
  • the screw 28 instead of being recessed, is turned down at its engaging end to form a shouldered extension 29.
  • the engaging ring or member 30 which fits closely over the extension, and has its inner end resting against the shoulder on the screw, while its outer end is sharpened as indicated at 31, for en gagement with the article to be held.
  • the engaging member 30, is preferably hardened and in order to temper the same'and also secure it in position, I prefer to heat it and place it in position and treat it so that it will be shrunk in place and tempered at the same time.
  • the screw 32 shown in Fig. 8 is provided with an engaging ring or sleeve 33, similar to that shown in Fig. 7, but sharpened by beveling in the opposite direction.
  • the screw 34 shown in Fig. 9 is provided at its engaging end with a hole 35, which is preferably made smaller than in the ones shown in the preceding figures which leaves a thicker wall for the same sized screw and also a substantial shoulder 36 at the end of the screw.
  • the engaging plug or member 37 is provided with a shank 38, fitting within the hole and with a shoulder 39 adapted to press against the shoulder-.36 or end of the screw as lndicated.
  • This engaging meniher is shown with a cup point, but obviously anyhdesired form ofpoint may be used therewit.
  • the screw While in most instances I prefer to make the screw of comparatively tough non-brittle material, and the point or engaging member of hard or tempered materia such as tern pered steel, yet in some instances, as where the set screw is to hold a piece of finished material, such as shafting and it is desired not to injure the same, I may malre the en gaging point or inset of comparatively soft material, which may be pressed closely in engagement with the article to be held without injuring the same.
  • one of the prmclpal uses of my improved set screw is in connection with mining machine chains.
  • a l nk 40 of one of such chains is shown in Flgs. 10 and 11, having a bit 41 inserted thercm in the usual manner, and providedwith a set screw 12, embodying my invention.
  • the set screw may be used repeatedly without liability of being broken or having its engaging end fiatened or batteredout, so as to injure the threads, as frequently occurs when such engaging end or point is not made sufficiently hard.
  • a set screw comprising a threaded body portion formed of iron or soft steel and having a head at one end and a hole 1n the opposite end, and a hardened steel point fitting tightly within said hole.
  • a set screw having a soft steel threaded body portion with a head at one end and shaped at the opposite end for receiving a point or engaging member, and a hardened engaging member tightly secured to said opposite end.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Description

R. E. NOBLE.
SET SCREW. APPLICATION FILED D3018, 1911. 1, 1 07,177, Patented Aug. 11, 1914.
or dulled UNITED STATES PATENT OFFICE.
RALPH E. NOBLE, or CHICAGO, ILLINoIs, AssIeNoR T0 MORGAN-GARDNER ELECTRIC COMPANY, or CHICAGO, ILLINOIS.
SET-S REW.
Application filed December a, 1911. Serial no. 664,560.
To all whom it may concern:
Be it known that I, RALPH E. NOBLE, a
combination or use forms one of the specialfeatures of my invention. In mining machines having. cutter chains, or similar devices provided with cutting hits, it has been the ordinary practice to use set-screws for holding such bits in position. As these bits become dull it is necessary to. loosen the set screws in order to remove them, andsuch changing of bits may be necessary many times in a day. This frequent loosening and tightening of set screws causes the points or engaging ends to become battered unless such points or engaging end is suthciently hard. Heretofore, it has beenattempted to harden the points without hardening the whole screw, but it is an exceedingly diiiicult job, and the point is apt to break oil. it the whole screw is hardened or tempered, it is apt to be too brittle, so that the screw head is liable to be broken off when the screw is tightened. in order to overcome these objections and to provide a screw which may have a strong, tough body portion with a hard unyielding point or engaging portion, and which may be used repeatedly without injuring the same, l have invented or discovered the improved set screw'which is shown in the accompanying drawlngs.
in these drawings, Figure 1, is a side view of a set screw embodying my invention, such screw having what is commonly known as a cup point and being partly broken away to show the interior construction; Fig. 2 is a similar view of another screw showing-a sharp point orcone point; Fig. 3 is another similar view showing a screw provided with a Hat point, such as commonly used in con-' nection with lathe dogs; Fig. '4 is an end View of the screw shown in Fig. 1; Fig. 5
is a modification showing a flat point Fig. 6 is another modification showing an oval point; Fig. 7 is a further modifi- Specification of :Letters Patent.
Patented Aug. 11, 1914.
cation showing a point formed by means of a sleeve; Fig. 8 shows. a slight modification of a sleeve point; Fig. 9 is a further modification showing the point member as formed with a shank and shoulder; Fig. 10 is an end view of a chain link and bit showing the setuscrew in position; Fig. 11 is a side view of the-chain link.
-One of the principal features of my invention consists in providing a set screw which may be made of any material'mo-st suitable or desirable for the construction of the screw and providing its engaging end with a plug or engaging portion of difierent material, best adapted to serve forthcpurpose of engagement with the part which the screw is adapted to hold.
As shown in Fig. 1, 12 indicates a set' screw, WhlCh for mining machine purposes is preferably made of machine steelor'steel which is sufficiently touglrand resisting so that the head, is "not apt to be twisted ofi, or the screw otherwise broken or injure in ordinary. use. The end of the screw is pro; vided with a hole or recess 13, into which is fitted an engaging member or plug 14,
having a-cup point 15. This plug or engaging member is preferably made to'fitv tightly'in the hole 13, and its inner end is made cone shaped in order to fit the bottom of the hole 13, as such hole would ordinarily be made by drilling into the end of the screw. On account oi? the plug '141- being.
given a driving fit, theside thereof may be flattened or grooved as indicated'at 16 to allow the air to ass out from'the hole as the plug is being forced into place.
The
walls l'I-of the set screw around the hole 13 are preferably left sufiiciently thick and strongso that'they will not be bulged out ordet'ormed by the engaging plug or point This is particularlydesirable as, it the- .threads are forced out or otherwise deformed at thisend, of the screw, it would be ditiicult to remove the screw or to again use it. The iglu'g or point 14 is preferably hardened suv ciently hard so that it will engage with, and cut into the surface of the bit or other art which it is adapted to hold in place, wit out injury to itself. I
As shown in Fig; 2," the screw 18 is provided at its engaging end with a slightly tapered hole 19, having a flat bottom which is adapted to receive the correspondingly tapered sharp pointed engaging member 20.
The screw 21, shown in Fig. 3 is provided at'its engaging end with a hole or recess 22, corresponding with the one shown in Fig. 1, but the engaging plug or member 23 ismade with a fiat or dog point. The screw 24, shown in Fig. 5 is recessed at its lower end to receive a flat point engaging member 25. The screw 26 shown in Fig. 6 is shown with an oval pointed engagingpiece 27 as indicated.
In Fig. 7, the screw 28 instead of being recessed, is turned down at its engaging end to form a shouldered extension 29. Around the extension is fitted the engaging ring or member 30 which fits closely over the extension, and has its inner end resting against the shoulder on the screw, while its outer end is sharpened as indicated at 31, for en gagement with the article to be held. In this instance the engaging member 30, is preferably hardened and in order to temper the same'and also secure it in position, I prefer to heat it and place it in position and treat it so that it will be shrunk in place and tempered at the same time.
The screw 32 shown in Fig. 8 is provided with an engaging ring or sleeve 33, similar to that shown in Fig. 7, but sharpened by beveling in the opposite direction.
The screw 34 shown in Fig. 9 is provided at its engaging end with a hole 35, which is preferably made smaller than in the ones shown in the preceding figures which leaves a thicker wall for the same sized screw and also a substantial shoulder 36 at the end of the screw. The engaging plug or member 37 is provided with a shank 38, fitting within the hole and with a shoulder 39 adapted to press against the shoulder-.36 or end of the screw as lndicated. This engaging meniher is shown with a cup point, but obviously anyhdesired form ofpoint may be used therewit.
While in most instances I prefer to make the screw of comparatively tough non-brittle material, and the point or engaging member of hard or tempered materia such as tern pered steel, yet in some instances, as where the set screw is to hold a piece of finished material, such as shafting and it is desired not to injure the same, I may malre the en gaging point or inset of comparatively soft material, which may be pressed closely in engagement with the article to be held without injuring the same.
As above indicated one of the prmclpal uses of my improved set screw is in connection with mining machine chains. A l nk 40 of one of such chains is shown in Flgs. 10 and 11, having a bit 41 inserted thercm in the usual manner, and providedwith a set screw 12, embodying my invention. It will be observed that by means of this arrangement, the set screw may be used repeatedly without liability of being broken or having its engaging end fiatened or batteredout, so as to injure the threads, as frequently occurs when such engaging end or point is not made sufficiently hard.
From the above description it Wlll be observed that my invention may be embodied in various different forms of set screws and I do not wish to be limited to the exact forms shown and described, except in so far as specified in the appended claims, but
What I claim and desire to secure by Letters Patent is:
1. A set screw comprising a threaded body portion formed of iron or soft steel and having a head at one end and a hole 1n the opposite end, and a hardened steel point fitting tightly within said hole.
2. A set screw having a soft steel threaded body portion with a head at one end and shaped at the opposite end for receiving a point or engaging member, and a hardened engaging member tightly secured to said opposite end.
3. The combination with'the barrel portion of a set screw having a hole in the end thereof, of an engaging point or member of extremely hard steel having a shank fitting in said hole, and having a shoulder fitting against the end of the barrel.
RALPH E. NOBLE.
Wi tnesses WV. R. CUMMINGS, Geo. M. Lorr.
US1911664560 1911-12-08 1911-12-08 Set-screw. Expired - Lifetime US1107177A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572613A (en) * 1945-11-27 1951-10-23 Bell Telephone Labor Inc Setscrew
US2676381A (en) * 1951-08-20 1954-04-27 United States Steel Corp Grip for testing machines
US2992669A (en) * 1958-08-18 1961-07-18 Standard Pressed Steel Co Socket set screw knurled tip
US3140635A (en) * 1962-05-04 1964-07-14 Davidson Leo Richard Fastening means for faucet handle
US3501993A (en) * 1968-12-17 1970-03-24 Henry F Swenson Setscrew with rotatable plastic end
US5611325A (en) * 1996-03-27 1997-03-18 Kudlacek; Donald S. Archery bow stabilizer
US20050180839A1 (en) * 2004-02-17 2005-08-18 Czarnek And Orkin Laboratories, Inc. Set screw with NiTi Tip
US20050191151A1 (en) * 2004-03-01 2005-09-01 Doug Gethmann Anti-rotation apparatus for use with threaded components
US20110277598A1 (en) * 2010-05-17 2011-11-17 Ee Jig Kim Adjustable socket wrench
US20170144283A1 (en) * 2015-11-24 2017-05-25 Safran Electrical & Power Non-metallic spline adapter extractor
US10215049B2 (en) * 2015-07-17 2019-02-26 Hamilton Sundstrand Corporation Air cycle machine lockout tool

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572613A (en) * 1945-11-27 1951-10-23 Bell Telephone Labor Inc Setscrew
US2676381A (en) * 1951-08-20 1954-04-27 United States Steel Corp Grip for testing machines
US2992669A (en) * 1958-08-18 1961-07-18 Standard Pressed Steel Co Socket set screw knurled tip
US3140635A (en) * 1962-05-04 1964-07-14 Davidson Leo Richard Fastening means for faucet handle
US3501993A (en) * 1968-12-17 1970-03-24 Henry F Swenson Setscrew with rotatable plastic end
US5611325A (en) * 1996-03-27 1997-03-18 Kudlacek; Donald S. Archery bow stabilizer
US20050180839A1 (en) * 2004-02-17 2005-08-18 Czarnek And Orkin Laboratories, Inc. Set screw with NiTi Tip
US7320570B2 (en) * 2004-02-17 2008-01-22 Czarnek And Orkin Laboratories, Inc. Set screw with NiTi tip
US20050191151A1 (en) * 2004-03-01 2005-09-01 Doug Gethmann Anti-rotation apparatus for use with threaded components
US20110277598A1 (en) * 2010-05-17 2011-11-17 Ee Jig Kim Adjustable socket wrench
US10215049B2 (en) * 2015-07-17 2019-02-26 Hamilton Sundstrand Corporation Air cycle machine lockout tool
US20170144283A1 (en) * 2015-11-24 2017-05-25 Safran Electrical & Power Non-metallic spline adapter extractor
US10596688B2 (en) * 2015-11-24 2020-03-24 Safran Electrical & Power Non-metallic spline adapter extractor

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