US2369853A - Screw driver - Google Patents

Screw driver Download PDF

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Publication number
US2369853A
US2369853A US43303242A US2369853A US 2369853 A US2369853 A US 2369853A US 43303242 A US43303242 A US 43303242A US 2369853 A US2369853 A US 2369853A
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US
Grant status
Grant
Patent type
Prior art keywords
socket
driver
surfaces
screw
bit
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
Inventor
William A Purtell
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.)
HOLO KROME SCREW CORP
HOLO-KROME SCREW Corp
Original Assignee
HOLO KROME SCREW CORP
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
Grant date

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B23/00Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/919Screw having driving contacts

Description

Feb. 20, 1945. w, A. PURTELL SCREW DRIVER Original Filed May 26, 1959 W fi R r WA mm %m 7% w y 1 Patented Feb. 20, 1945- SCREW DRIVER William A. Pnrtell, West Hartford, Conn., assignmto The Holo-Krome Screw Corporation, a corporation of Connecticut y 26, 1939, Serial No.

Original application Ma this application March Divided and 2, 1942, Serial No. 433,032

1 Claim.

My invention relates to screw drivers. I

It has among its objects to provide an improved driver for a socketed screw. A further object my invention is to provide such a driver for a socketed screw of the construction described and claimed in my copending application, Serial No. 275,903, filed May 26. 1939,, now Patent No. 2,285,461, of which this application is a divison. A still further object of my invention is to pro vide such a driver having binding or wedging means thereon of an improved construction and disposed in a new position on the driver and relative to the radially located ribs thereon and adapted to cooperate in an improved manner with cooperating binding surfaces On the screw enabling the latter to be readily connected to the driver and held thereon. Other objects include the provision of an improved combination of driver and screw. These and other advantages of my improvements will, however, hereinafter more fully appear.

In the accompanying drawing, 1 have shown for purposes of illustration certain embodiments which my. invention may assume in practice.

in this drawing:

Figure l is a side elevation oithe driver in the process of being inserted in the screw socket, the screw being shown in section to facilitate illustration;

Fig. 2 is a vertical section on line 2-2 of Fig ure 3, showing the driver in operative position in the screw socket;

Fig. 3 is a transverse section on Figure 2;

Fig. 4 is are 3;

Fig. 5 is a transverse section on line 5-5 of Figure l, and

Fig. 6 is a view similar to Figure 2 showing a modified construction.

line 3-3 oi a vertical section on line 5-6 of Fig- In the construction shown in Figures 1 to 5,-

inclusive, I have shown a screw head 5 having therein a turning socket, generally indicated at 2. or the construction described and claimed in said application, with an improved turning member or driver 3, likewise of the construction illustrated therein and receivable in said socket and cooperating therewith in an improved manner, as hereinafter brought out.

The socket 2 has a series of radially disposed flutes l having vertically convexvend surfaces 5v laterally flaring to the mouth of the socket, said surfaces providing binding portions 5 inclined at an angle to the axis of the socket which becomes more acute progressively toward the botof the socket.

tom of the socket. These end surfaces 5 are transversely arcuate or concave and taper so as to decrease in width toward and to the bottom of the socket. The sides 0! the fiutesare provided with surfaces s converging toward the axis of the socket. Between the flutes are abutments 8 having transversely concav faces l, the faces i being vertically convex and arranged so that the angle to the vertical becomes progressively more acute toward and to the bottom of the socket. The faces or surfaces '5 provide binding surfaces i Referring to the driver, it will be seen that it has'a hit 9, cut away laterally at a plurality of peripheral points to provide tapered ribs it conforming to and received in the major portions of the flutes 3. These ribs have end surfaces it conforming to and engaging the surfaces 5 and forming angles with the axis of the driver which become more acute progressively toward and to the lower end of the bit, the surfaces ll providing binding portions li The ribs are spaced apart by portions id, these portions tapering so as to become progressively wider toward and to the top of the socket and providing binding portions it cooperating with the binding portions i of the socket.

It will be seen that there is provided a, driver bit portion recessed at a plurality of peripheral points to provide lateral abutments, said abutments having lateral curiaces of substantial area forming angles with the axis of the driver which become more acute progressively toward and substantially to the lower end of that, between the abutments, the bit is provided with fluted portions having transversely convex inner surfaces of substantial area which also form angles with the axis oi the driver which become progressively mor acute toward and to the lower end of the bit. All oi these lateral surfaces of substantial area are adapted to provide binding surfaces cooperating with corresponding binding surfaces in the socket. The lateral surfaces on the ribs are of such dimensions as to space the lower end of the bit upwardly from the iioor or bottom of the socket as shown in Fig. 2, and, as bit and socket are so related to each other that the binding surfaces it on the bit engage the socket in a zone adjacent the bottom of the socket but are not engaged with the upper portion In Fig. 6, I have shown a modified form of driver. Here, the ribs on the driver are cut away or slabbed off, as indicated at it, within the the bit and shown in Fig. 4, the

mouth portion of the socket, the lateral dimensions of the bit being such, in this case. as to space the bit from the upper or mouth portion of the socket so that the binding surfaces on. the ribs are spaced downwardly from the mouth portion of the socket and upwardly from the bottom or floor of the socket, whereb the binding surfaces of the outer walls of the ribs are, relatively to depth of the socket, in an intermediate zone.

By the invention, a driver is provided having a large binding area with respect to the screw socket, a part of this area being on the rib or wings and another part on the transversely convex suri'aces which are disposed between the ribs at the root portions of the latter. The relatively increased lateral binding area provided in this manner greatly facilitates the turning of the screw.

While I have in this application specifically described certain form which my invention may assume in practice, it will be understood that these forms have been shown for purposes of illustration, and that the invention may be modilied and embodied in other forms without de parting from its spirit or the scope of the appended claim.

What I claim as newi'and desire to secure by Letters Patent is:

z,see,ess

A driver for a socketed screw 0! the type having a turning socket therein and turning toolbinding means in said socket. comprising a driver bit portion received in said socket having recesses in the bit to provide lateral abutments, lateral surfaces of substantial area forming the bottoms oi the recesses and located between said abutments for binding engagement with the screw socket and forming angles with the axis oi. the driver which become more acute progressively towardthe lower end .of'the bit, said abutments also having lateral binding surfaces of substantial area forming angles with the axis of the driver which become more acute progressively toward the lower end of the bit, the extreme lower end of said bit having an area larger than that of the floor oi the socket and said abutments being cut back for -a predetermined distance in the zone located in the entrance to the mouth of the socket so as to limit the binding of the outer surfaces of the abutments with corresponding part in the socket to a region spaced upwardly from the bottom of the socket and downwardly from the top of the socket.

WILLIAM A. PURTELL.

US2369853A 1939-05-26 1942-03-02 Screw driver Expired - Lifetime US2369853A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US2285461A US2285461A (en) 1939-05-26 1939-05-26 Socketed screw
US2285460A US2285460A (en) 1939-05-26 1939-05-26 Screw
US2369852A US2369852A (en) 1939-05-26 1942-03-02 Driver for socketed screws
US2369853A US2369853A (en) 1939-05-26 1942-03-02 Screw driver

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US2285461A US2285461A (en) 1939-05-26 1939-05-26 Socketed screw
GB840140A GB546381A (en) 1939-05-26 1940-05-09 Improvements in or relating to socketed screws
GB839340A GB542524A (en) 1939-05-26 1940-05-09 Improvements in or relating to socketed screws
FR865655A FR865655A (en) 1939-05-26 1940-05-16 Improvements to recessed fasteners, such as screws
US2369852A US2369852A (en) 1939-05-26 1942-03-02 Driver for socketed screws
US2369853A US2369853A (en) 1939-05-26 1942-03-02 Screw driver

Publications (1)

Publication Number Publication Date
US2369853A true US2369853A (en) 1945-02-20

Family

ID=32111023

Family Applications (3)

Application Number Title Priority Date Filing Date
US2285461A Expired - Lifetime US2285461A (en) 1939-05-26 1939-05-26 Socketed screw
US2369853A Expired - Lifetime US2369853A (en) 1939-05-26 1942-03-02 Screw driver
US2369852A Expired - Lifetime US2369852A (en) 1939-05-26 1942-03-02 Driver for socketed screws

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US2285461A Expired - Lifetime US2285461A (en) 1939-05-26 1939-05-26 Socketed screw

Family Applications After (1)

Application Number Title Priority Date Filing Date
US2369852A Expired - Lifetime US2369852A (en) 1939-05-26 1942-03-02 Driver for socketed screws

Country Status (3)

Country Link
US (3) US2285461A (en)
FR (1) FR865655A (en)
GB (2) GB542524A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458391A (en) * 1947-07-26 1949-01-04 Lavietes David Paul Screw and driver
US2677985A (en) * 1949-07-11 1954-05-11 Hi Shear Rivet Tool Co Slotted screwhead
US2764197A (en) * 1952-10-07 1956-09-25 North American Aviation Inc Driver for recessed head screws
US2815054A (en) * 1953-09-08 1957-12-03 Phillips Screw Co Removal tool for recessed head screws
DE1160378B (en) * 1958-10-31 1963-12-27 Gkn Screws Fasteners Ltd Screwdriver for Phillips screws
US3187790A (en) * 1959-05-18 1965-06-08 Hi Shear Rivet Tool Company Screw and screw driver coupling
US3913647A (en) * 1974-05-28 1975-10-21 Edward T Arnn Screw driver
EP0206564A1 (en) * 1985-06-03 1986-12-30 Isotech Consultants Inc. Screw driving socket
US4703903A (en) * 1986-03-11 1987-11-03 Gilmore Mercer D Cassette tape winding device
US20060110237A1 (en) * 2004-11-23 2006-05-25 Richard Belinda Spline drive fastener system
US20080072717A1 (en) * 2006-09-25 2008-03-27 Stumpf William R Drywall screwdriver bit
US20120099944A1 (en) * 2009-06-24 2012-04-26 Osg System Products Co., Ltd. Screw tightening structure, screw and screw tightening tool
US20160245325A1 (en) * 2015-02-25 2016-08-25 Essence Method Refine Co., Ltd. Recessed screw, forming punch and driving tool

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445525A (en) * 1945-02-19 1948-07-20 Moses L Gulden Fastening device
US2445978A (en) * 1945-05-07 1948-07-27 Domnic V Stellin Socket head screw
US2556155A (en) * 1946-07-13 1951-06-05 Domnic V Stellin Socket head screw
US2800829A (en) * 1954-08-30 1957-07-30 Wesloc Screw Inc Cruciform recessed screw
US3108623A (en) * 1959-05-05 1963-10-29 Phillips Screw Co Tools for recessed head fasteners
US3872904A (en) * 1972-11-24 1975-03-25 John W Barlow Flex coupling fastener
JPS521960U (en) * 1975-06-23 1977-01-08
GB2098693B (en) * 1981-03-30 1984-09-12 Isotech Consultants Inc Screw driving socket and a punch for forming the socket
US4459074A (en) * 1981-12-15 1984-07-10 Russell, Burdsall & Ward Corporation Socket drive
FR2546584B1 (en) * 1983-05-26 1985-08-30 Decaut Et Btr Reunis Body screw feet reduced compared to organs screw Hexagon socket
GB2153033B (en) * 1984-01-17 1988-05-11 Barge Bulloneria Driving formations of screws
US5019080A (en) * 1990-02-13 1991-05-28 Trextron Inc. Drive system for prosthetic fasteners
WO1998038010A1 (en) * 1997-02-28 1998-09-03 Sofamor Danek Properties, Inc. Recessed drive fastener and cooperable driving tool
US6508098B2 (en) * 2001-06-04 2003-01-21 Water Gremlin Company Fishing sinker and method of making
US20030000351A1 (en) * 2001-06-28 2003-01-02 Ortho Development Corporation Interference fit screw driver
JP4205990B2 (en) * 2003-05-30 2009-01-07 日東精工株式会社 Driving slotted screw and driver bit
US20150266169A1 (en) 2013-05-10 2015-09-24 Bryce Fastener, Inc Methods and apparatus for asymmetrical fastening system
US9422965B2 (en) 2013-05-10 2016-08-23 Bryce Fastener, Inc. Methods and apparatus for asymmetrical fastening system
KR20160070091A (en) * 2013-10-10 2016-06-17 아큐먼트 인털렉추얼 프로퍼티즈 엘엘씨 Punch pins, associated sockets, and methods of forming sockets using punch pins
US9638234B2 (en) 2014-08-27 2017-05-02 Bryce Fastener Company, Inc. Methods and apparatus for multi-dimensional asymmetrical fastening system
US9821442B2 (en) 2015-10-19 2017-11-21 Bryce Fastener Company, Inc. Methods and apparatus for an enhanced driving bit

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458391A (en) * 1947-07-26 1949-01-04 Lavietes David Paul Screw and driver
US2677985A (en) * 1949-07-11 1954-05-11 Hi Shear Rivet Tool Co Slotted screwhead
US2764197A (en) * 1952-10-07 1956-09-25 North American Aviation Inc Driver for recessed head screws
US2815054A (en) * 1953-09-08 1957-12-03 Phillips Screw Co Removal tool for recessed head screws
DE1160378B (en) * 1958-10-31 1963-12-27 Gkn Screws Fasteners Ltd Screwdriver for Phillips screws
US3187790A (en) * 1959-05-18 1965-06-08 Hi Shear Rivet Tool Company Screw and screw driver coupling
US3913647A (en) * 1974-05-28 1975-10-21 Edward T Arnn Screw driver
EP0206564A1 (en) * 1985-06-03 1986-12-30 Isotech Consultants Inc. Screw driving socket
US4703903A (en) * 1986-03-11 1987-11-03 Gilmore Mercer D Cassette tape winding device
US20060110237A1 (en) * 2004-11-23 2006-05-25 Richard Belinda Spline drive fastener system
US20080072717A1 (en) * 2006-09-25 2008-03-27 Stumpf William R Drywall screwdriver bit
US20120099944A1 (en) * 2009-06-24 2012-04-26 Osg System Products Co., Ltd. Screw tightening structure, screw and screw tightening tool
US8545156B2 (en) * 2009-06-24 2013-10-01 Osg System Products Co., Ltd. Screw tightening structure, screw and screw tightening tool
US20160245325A1 (en) * 2015-02-25 2016-08-25 Essence Method Refine Co., Ltd. Recessed screw, forming punch and driving tool
US9962759B2 (en) * 2015-02-25 2018-05-08 Essence Method Refine Co., Ltd. Recessed screw, forming punch and driving tool

Also Published As

Publication number Publication date Type
US2285461A (en) 1942-06-09 grant
US2369852A (en) 1945-02-20 grant
GB546381A (en) 1942-07-10 application
GB542524A (en) 1942-01-14 application
FR865655A (en) 1941-05-30 grant

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