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Publication numberUS2408450 A
Publication typeGrant
Publication dateOct 1, 1946
Filing dateMar 24, 1944
Priority dateMar 24, 1944
Publication numberUS 2408450 A, US 2408450A, US-A-2408450, US2408450 A, US2408450A
InventorsSchrader Raymond D
Original AssigneeV Ray Van Wey
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Broken stud remover
US 2408450 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

a Oct. 1, 1946. sc A 2,408,450

BROKEN STUD REMOVER Filed March 24, 1944 Patented Oct; 1, 1946.

UNITED STATES PATENT OFFICE BROKEN STUD REMOVER Raymond D. Schrader, Peoria, 111., assignor to V. Ray Van Wey, Pekin, Ill.

Application'March 24, 1944, Serial No. 527,983

1 Claim.

1 The present invention relates to new and useful improvements for removing broken studs from engine blocks and other places where the bolt or stud has been broken off below the surface of the block.

An important object of the present invention is to provide a screw-threaded member having a bit formation at its lower end and adapted to bite into the end of the broken stud and also to pro: vide means for rigidly supporting the screw threaded member While the same is engaging the broken stud and while the screw threaded member and stud are being removed.

A further object is to provide a device of this character of simple and practical construction,v

which is eflicient and reliable in performance, relatively inexpensive to manufacture, easy to operate and otherwise well adaptedfor the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawing forming part hereof, wherein like numerals refer to like parts throughout and in which Figure 1 is a fragmentary vertical sectional view of an engine block showing the tool in position for removing a broken studtherefrom and with parts of the tool shown in section,

Figure 2 is a top plan view,

Figure 3 is a perspective view of one of the spacing members, and

Figure 4 is an end elevational view of the broken stud removing member.

Referring now to the drawing in detail Wherein for the purpose of illustration I have disclosed a preferred embodiment of the invention,

"the numeral 5 designates an engine block having the threaded tap or bolt holes 6 therein for securing the engine head (not shown) in position. The numeral 1 represents a stud or bolt which has been broken off in one of the bolt holes 6.

In carrying out my invention bolts 8 are threaded in the opening 6 at opposite sides of the broken stud I and positioned on the bolt and resting on the top of the engine-block are spacing spools 9 on which are supported the ends of a bridge member II], the bridge member having slots II in its end portion for adjustably receiving the bolts 8 and the bridge member is secured in a fixed position by the head of the bolt.

The bridge member is also formed with a central threaded opening l2 adapted to receive an internally and externally threaded sleeve l3 having a hexagonal head I4 at its upper end for re- Sleeve I3, and thereby augment the latters re-' .sistance to pressure.

The lower end of the screw I5 is formed with a head l8 adapted to bite into the top of the broken stud and to firmly engage the broken stud to remove the latter from the bolt holes 6 by a retracting movement of the sleeve 13.

It will also be understood that the screw l5 and sleeve l3 may be constructed of various sizes for use in extracting or removing various sized broken studs.

It will be apparent that the device of the present invention may be employed efiectively on any broken ofi stud regardless of the pitch of the threads thereon. Likewise, it is effective for the removal of any broken ofi. stud irrespective of whether such stud be flush with the plane surface of the block, or countersunk in the block, or with its end protruding from the block, and without requiring any prior drilling or like action thereon. Furthermore, it is obvious that this device may be used for the insertion of bolts or screws into position in blocks where the conventional means for such positioning can not be employed.

It is believed the details of construction, operation and advantages of the device will be readily understood Ifrom'the foregoing without further detailed explanation.

Having thus described the invention, What I claim is: l

A broken stud remover comprising a bridge member, slots in each endof said bridge member, bolts positioned in said slots and adapted for securing said bridge member to the work at opposite sides of a broken stud to be removed from said work, removable spacing members on the bolts for spacing said bridge member above the work, a threaded opening in said bridge member intermediate its ends, an internally and ex- Mounted in

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2752671 *Jan 19, 1953Jul 3, 1956Louis AlyeaMethod of removing threaded shafts
US2851768 *Dec 21, 1953Sep 16, 1958Ellis James AllenThreaded insert removing and applying tool
US3363488 *Sep 23, 1965Jan 16, 1968Wagner AlbertAlignment jig for removing studs from truck hubs
US3508321 *Dec 15, 1967Apr 28, 1970Aai CorpMethod for extracting broken studs
US3949459 *Jul 22, 1974Apr 13, 1976Marenchin John ATransmission tools
US4020541 *Apr 21, 1976May 3, 1977Grosch Gottlieb WHead shaft breaking tool
US4080708 *Dec 10, 1976Mar 28, 1978Esco CorporationMethod of repairing a dredge cutterhead
US4646413 *Jun 18, 1985Mar 3, 1987Tri Tool Inc.Tube extractor drill jig
US5303619 *Jul 9, 1992Apr 19, 1994Cole Wilbur C SenWrench assembly for propane tanks and gas grills
US5320003 *Apr 15, 1993Jun 14, 1994The Highfield Mfg. CompanyWrench for underground valves
US5349736 *Feb 26, 1993Sep 27, 1994Hart To Sensible Products, Inc.Method and tool for pulling clutch from washing-machine motor
US5546834 *Apr 16, 1990Aug 20, 1996Gable; JackTool for removing threaded fasteners
US7272886 *Mar 20, 2003Sep 25, 2007David John ThomsonBearing press support adaptor
US7988443 *May 31, 2009Aug 2, 2011Hon Hai Precision Industry Co., Ltd.Mold clearing tool
US9132487 *Nov 12, 2012Sep 15, 2015Beydler CNCTool for removing broken threaded fasteners
US20050086781 *Mar 20, 2003Apr 28, 2005Thomson David J.Bearing press support adaptor
US20090317508 *May 31, 2009Dec 24, 2009Hon Hai Precision Industry Co., Ltd.Mold clearing tool
US20130266913 *May 23, 2013Oct 10, 2013Nobel Biocare Services AgDental implant, a dental implant kit and a method of securing a dental bridge to the jaw of a patient
US20140133928 *Nov 12, 2012May 15, 2014Scott A. BEYDLERTool for Removing Broken Threaded Fasteners
CN101612780BJun 24, 2008May 8, 2013鸿富锦精密工业(深圳)有限公司Demolding assistant tool
DE1106706B *May 14, 1956May 10, 1961Hermann Werner K GWerkzeug zum Loesen und Anziehen von Schrauben, insbesondere von in Blechbauteilen sitzenden Senkkopfschrauben
DE19707428A1 *Feb 25, 1997Oct 2, 1997Zbigniew JablonskiJig for centre boring of broken off threaded shaft i.e. bolt
DE19707428C2 *Feb 25, 1997Jul 30, 1998Zbigniew JablonskiZentrierwerkzeug zum Zentrieren eines Bohrers, verwendbar für die Entfernung defekter oder abgebrochener Schrauben, Gewindebolzen oder dgl.
DE19812989C2 *Mar 24, 1998Aug 17, 2000Zbigniew JablonskiDurch einen Preßschlag aufsetzbare Zentrierbohrbuchse zum Entfernen von bündig abgebrochenen Schrauben oder Gewindebolzen
U.S. Classification81/53.2, 29/259, 29/402.3, 29/426.5, 81/462, 81/441, 470/96
International ClassificationB25B27/14, B25B27/18
Cooperative ClassificationB25B27/18
European ClassificationB25B27/18