US2272552A - Lock screw - Google Patents
Lock screw Download PDFInfo
- Publication number
- US2272552A US2272552A US253857A US25385739A US2272552A US 2272552 A US2272552 A US 2272552A US 253857 A US253857 A US 253857A US 25385739 A US25385739 A US 25385739A US 2272552 A US2272552 A US 2272552A
- Authority
- US
- United States
- Prior art keywords
- screw
- stem
- socket
- threaded
- relay
- 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
- 239000011810 insulating material Substances 0.000 description 3
- 229920001342 Bakelite® Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 230000027455 binding Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/32—Latching movable parts mechanically
-
- 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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
-
- 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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/284—Locking by means of elastic deformation
- F16B39/286—Locking by means of elastic deformation caused by saw cuts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
- H01R4/34—Conductive members located under head of screw
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
- Y10S411/924—Coupled nut and bolt
- Y10S411/929—Thread lock
- Y10S411/938—Distorted thread
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
- Y10S411/924—Coupled nut and bolt
- Y10S411/954—Wedged slotted bolt
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S439/00—Electrical connectors
- Y10S439/957—Auxiliary contact part for circuit adaptation
Definitions
- This invention relates, in general, to relays, particularly of the type employed in railway operation, and is more particularly directed to improvements therein.
- a main object of the present invention is to provide a self-locking bolt or screw which is cheap to manufacture, and very effective in performing its locking function.
- Fig. 2 is a fragmentary sectional view of a second application of the invention.
- Fig. 3 is a side view with parts in section, of the self-locking screw.
- Fig. 4 is an end view of the self-locking screw.
- a portion of a relay which is of the general type disclosed inthe U. S. Patent to O. S. Field, No. 2,199,335, of April 30, 1940, filed October 14, 1938, for Time element relays. Accordingly, the relay structure, other than the part relating particularly to the present invention, need be described in no great detail.
- the relay shown comprises an enclosed housing i, madepreferably of transparent material, such as glass, or other plastic material, and is closed by a top 2, of insulating material. Carried by the top is a coil 3, on a core which projects through the top and terminates in a pole shoe 4, cooperating with an armature 5, pivoted at 6 to a fixed member 1, carried by screws 8, supported by the top.
- the armature has adjustable spring biasing means 9, and carries an articulated contactfinger in, having a movable front point II, and a movable back point l2, to cooperate respectively with fixed front and back points l3 and It.
- the relay operates in the usual manner when its coil 3, (and of course the usual othercoil, not shown), is energized, to pick up its armature 5 and close the front points, and to release the armature 5, on deenergization, to close the back points, which last isthe condition as shown in Filg. 1.
- the fixed front and back points are supported from the relay top 2, by'means of screws l5, received in threaded sleeves I 6, carried by the top, as by molding them therein, or in any other suitable manner. While not shown in the drawing, other parts of the relay to be connected to the external circuits are treated in the same manner as these front and back fixed points.
- This screw comprises a head ll, of steel or the like, which is encased in a block N3 of insulating material, of a form to receive a wrench or other suitable tool, and carries a threaded stem l9.
- This stem is slotted longitudinally of its length by means of a saw or the like, to form a slot 20, which is left undisturbed at the one end 2
- FIG. 2 there'can here be seen the construction of the plug elements with which is employed. the present invention.
- Each plug element comprises a threaded stem 24, carrying a wrench receiving cup 25 having a rim 26.
- the plug itself includes a length of ribbon 21 of conducting material, relatively thin and wide, bent on itself to form a loop. The two free ends of the ribbon 21 are received in cup member 25, to be fastened therein as by spot welding, for example.
- This plug element is receivable in a circularly drilled socket element 32, as can be seen in Fig. 2.
- FIG. 1 there is here shown a first application of the invention, wherein the threaded sleeves l6, carried by top 2, receive selflocking screws S, such as described above with reference to Figs. 3 and 4.
- the washers 36 between which lead wires can be clamped, are carried by the stem of the locking screw S, and the screw locks itself in position in sleeve l6, and by being turned into the-sleeve, the head of the screw clamps the lead wires between the washers 38..
- a plug coupler is employed, and this includes a plug member 45, and a socket member 39, with interfltting matched edges or grooves 40 and H, whereby the member 19 can be accurately fitted in place on the plug member 45.
- the plug member is completed by' screwing plug elements, as described above, into the threaded sleeves I 6, the threaded stems 24 being adapted to be received therein. 1
- the socket member includes a housing 42, of insulating material, such as Bakelite, or the like, carrying socket sleeves or elements 43, preferably molded in place.
- the socket elements 43 are internally threaded, at their outer ends, to receive self-locking screws S, as described above, on which are washers 36, between which lead wires can be clamped, in the same manner as described above in connection with Fig. 1.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Description
0. S. FIELD LOCK SCREW Filed Jan. 31, 1939 5 6 Y 5 R M r m M N 0 L W *T... m0 A 3 Ha 5... 1
Y B M? w 4 2 01 5 44M Patented Feb. 10,. 1942 LOCK scaEw Oscar S. Field, Rochester, N. Y., assignor to General Railway Signal Company, Rochester, N. Y.
Application January 31, 1939, Serial No. 253,857
1 Claim.
This invention relates, in general, to relays, particularly of the type employed in railway operation, and is more particularly directed to improvements therein.
A main object of the present invention is to provide a self-locking bolt or screw which is cheap to manufacture, and very effective in performing its locking function.
Further objects, purposes and characteristic features of the present invention will appear as the description -progresses, reference being made to the accompanying drawing, showing, solely by way of example, and in no manner whatsoever in a limiting sense, one embodiment of the invention. In the drawing- Fig. 1 is a side section, with parts shown in elevation, of a relay employing the invention.
Fig. 2 is a fragmentary sectional view of a second application of the invention.
Fig. 3 is a side view with parts in section, of the self-locking screw.
Fig. 4 is an end view of the self-locking screw.
Referringnow to the drawing, and first to Fig. 1, there is here shown a portion of a relay which is of the general type disclosed inthe U. S. Patent to O. S. Field, No. 2,199,335, of April 30, 1940, filed October 14, 1938, for Time element relays. Accordingly, the relay structure, other than the part relating particularly to the present invention, need be described in no great detail.
The relay shown comprises an enclosed housing i, madepreferably of transparent material, such as glass, or other plastic material, and is closed by a top 2, of insulating material. Carried by the top is a coil 3, on a core which projects through the top and terminates in a pole shoe 4, cooperating with an armature 5, pivoted at 6 to a fixed member 1, carried by screws 8, supported by the top. The armature has adjustable spring biasing means 9, and carries an articulated contactfinger in, having a movable front point II, and a movable back point l2, to cooperate respectively with fixed front and back points l3 and It.
The relay operates in the usual manner when its coil 3, (and of course the usual othercoil, not shown), is energized, to pick up its armature 5 and close the front points, and to release the armature 5, on deenergization, to close the back points, which last isthe condition as shown in Filg. 1.
The fixed front and back points are supported from the relay top 2, by'means of screws l5, received in threaded sleeves I 6, carried by the top, as by molding them therein, or in any other suitable manner. While not shown in the drawing, other parts of the relay to be connected to the external circuits are treated in the same manner as these front and back fixed points.
Referring now to Figs. 3 and 4, there is here shown the self-locking screw employed in this invention. This screw comprises a head ll, of steel or the like, which is encased in a block N3 of insulating material, of a form to receive a wrench or other suitable tool, and carries a threaded stem l9. This stem is slotted longitudinally of its length by means of a saw or the like, to form a slot 20, which is left undisturbed at the one end 2|, but at the other end 22, it is spread apart, to cause the slot to assume a V- shape, when viewed from the end of the screw.
When the screw as thus formed is turned into a circular threaded opening, the sprung-apart halves frictionally bind against the threaded receiving socket to produce a locking action. Perhaps more important is that the two corners and edges of the V slot at the opened end of the V, tend to bite, or dig, into the receiving thread, one producing more effect when the screw is tumed into the socket, and the other producing more when the screw is turned out of the socket, as is obvious, whereby to produce a screw which locks itself in any given position.
For example, if the screw be turned clockwise, as viewed in Fig. 4, the edge and corner 23 is what produces the biting-in or binding action, described just above.
Referring now to Fig. 2, there'can here be seen the construction of the plug elements with which is employed. the present invention.
Each plug element comprises a threaded stem 24, carrying a wrench receiving cup 25 having a rim 26. The plug itself includes a length of ribbon 21 of conducting material, relatively thin and wide, bent on itself to form a loop. The two free ends of the ribbon 21 are received in cup member 25, to be fastened therein as by spot welding, for example.
This plug element is receivable in a circularly drilled socket element 32, as can be seen in Fig. 2.
Referring again to Fig. 1, there is here shown a first application of the invention, wherein the threaded sleeves l6, carried by top 2, receive selflocking screws S, such as described above with reference to Figs. 3 and 4.
In this form, the washers 36, between which lead wires can be clamped, are carried by the stem of the locking screw S, and the screw locks itself in position in sleeve l6, and by being turned into the-sleeve, the head of the screw clamps the lead wires between the washers 38..
Thus, in this form of the invention, in which the self-locking screw is employed, various usual lock nuts are entirely unnecessary.
In a second form for connecting the wires to the relay, as shown in Fig. 2, the top 2, with its sleeves I, are exactly the same as described above. In lieu, however, of self-locking screws for making the connections, a plug coupler is employed, and this includes a plug member 45, and a socket member 39, with interfltting matched edges or grooves 40 and H, whereby the member 19 can be accurately fitted in place on the plug member 45.
The plug member is completed by' screwing plug elements, as described above, into the threaded sleeves I 6, the threaded stems 24 being adapted to be received therein. 1
. The socket member includes a housing 42, of insulating material, such as Bakelite, or the like, carrying socket sleeves or elements 43, preferably molded in place. The socket elements 43 are internally threaded, at their outer ends, to receive self-locking screws S, as described above, on which are washers 36, between which lead wires can be clamped, in the same manner as described above in connection with Fig. 1.
The above rather specific description of one form of this invention, has been given solely by way of example, and is not intended, in any manner whatsoever, ina limiting sense. It is to be understood that the present disclosure contemplates covering all such modifications, variations and adaptations, as may appear desirable from width extending diametrically through the stem and longitudinally from the outer end of the stem toward said head for a distance greater than the diameter of the stem, said slot dividing said stem near its outer end into bifurcated portions of semi-cylindrical form, said bifurcations then being spread apart by opposed torsional forces along oneside of the stem only at its outer end and thus separated by dimensions progressively varying both longitudinally and transversely of said stem, said bifurcations thereby affording biting edges along one side of said stem adjacent its outer end to engage with the threads of the socket, the outer threaded end of said stem being beveled to facilitate initial engagement and meshing of the threads of the stem with the threads of the socket.
. OSCAR S. FIELD.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US253857A US2272552A (en) | 1939-01-31 | 1939-01-31 | Lock screw |
US385321A US2291458A (en) | 1939-01-31 | 1941-03-26 | Relay |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US253857A US2272552A (en) | 1939-01-31 | 1939-01-31 | Lock screw |
Publications (1)
Publication Number | Publication Date |
---|---|
US2272552A true US2272552A (en) | 1942-02-10 |
Family
ID=22961988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US253857A Expired - Lifetime US2272552A (en) | 1939-01-31 | 1939-01-31 | Lock screw |
Country Status (1)
Country | Link |
---|---|
US (1) | US2272552A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2881652A (en) * | 1955-07-14 | 1959-04-14 | Frank H Swaim | Hollow self-tapping and self-locking screw |
US2947024A (en) * | 1956-11-06 | 1960-08-02 | Jr Frank Czudak | Spectacle hinge and pivot stud therefor |
US3134290A (en) * | 1962-08-23 | 1964-05-26 | Robertson Co H H | Corrosion resistant metal screw with a plastic head |
US3506377A (en) * | 1968-02-23 | 1970-04-14 | James D Thackrey | Bolt construction |
US4643513A (en) * | 1985-12-12 | 1987-02-17 | Martin Charles B | Universal electrical connector |
US5199837A (en) * | 1991-10-16 | 1993-04-06 | Textron Inc. | Ultrasonic insert stud and method of assembly |
-
1939
- 1939-01-31 US US253857A patent/US2272552A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2881652A (en) * | 1955-07-14 | 1959-04-14 | Frank H Swaim | Hollow self-tapping and self-locking screw |
US2947024A (en) * | 1956-11-06 | 1960-08-02 | Jr Frank Czudak | Spectacle hinge and pivot stud therefor |
US3134290A (en) * | 1962-08-23 | 1964-05-26 | Robertson Co H H | Corrosion resistant metal screw with a plastic head |
US3506377A (en) * | 1968-02-23 | 1970-04-14 | James D Thackrey | Bolt construction |
US4643513A (en) * | 1985-12-12 | 1987-02-17 | Martin Charles B | Universal electrical connector |
US5199837A (en) * | 1991-10-16 | 1993-04-06 | Textron Inc. | Ultrasonic insert stud and method of assembly |
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