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Publication numberUSRE16062 E
Publication typeGrant
Publication dateMay 5, 1925
Filing dateAug 11, 1921
Publication numberUS RE16062 E, US RE16062E, US-E-RE16062, USRE16062 E, USRE16062E
InventorsCharles C. Tomkinson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Bolt anchor
US RE16062 E
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

May"5, 1925 -c. c. TOMKINSON BOLT ANCHOR Original Fil d'Aug- 1 1921 0'. da z,

INVENTOR (Zar/es (T yam/K0750,

-Reis'sued May 5, 1925.

NITE STATES PATENT OFFICE.

CHARLES C. TQMKINSON, OF PLAINFIELD, NEW JERSEY, A SSIGNOR T JOHN EDWARD Y OGDEN, 0F MOUNTAINVILLE, NIEV YORK. v

BOLT ANCHOR.-

Original Ho.-1,487,290,.dated March 18, 1924, Serial No. 491,333, filed August 11, 1921. Application for reissue filed Octoberll, I924. Serial No. 744,293.

To all'whom it may concern:

Be it known that I, (HIARLES C. TOMKIN- son,

resident of Plainfield, countyof Union, and

Stateof New Jersey, United States of America, have mvented certain new and useful Improvements in Bolt Anchors, of

which the following is aspecificatio'n.

4 This invention relates to Bolt Anchors such as are used in walls of brick, stone, cementitious or other material not adapted to directly receive a threaded member.

. 4 One of the objects of thev invention is to.

provide an anchor having hard and soft metal parts so constructed and. arranged that the hard metal parts will. be deformed and expanded by the soft metal into engagement with t-he wall of the opening in which the anchor is located.

' One of the objects of the invention is to provide an anchor metal parts-so arran ed that the soft metal will be forced throng openings in the hard metal int-o en agement with the wall of the opening in a ditlon to expanding the hard metal.

Another .object of the invention is to provide an anchor comprising a hard metal shell and asoft metal expanding element,

the. shell having means for assisting in directing the movement of the soft metal when the latter is pressed or acted onby a thread member or bolt.

' Another object of the invention is to provide a new and improved method of securing an expansion shield in a 'wall opening and securing anobject to. be supported to the shield.

Further objects of'the invention will apear from the following specification taken 1n connection with the drawings, which form a part of this application, and in whichi Fig. 1 is an elev atlonal View of an expansion shield constructed in accordance with theinvention,

Fig. 2 is an and elevation of the outer end of the shield-shown. in Fig. 1.

Fig. 3 is a sectional elevation taken substantially on line- 3-3 of Fig. 1.

Fig. 4 is a sectional elevation of the shield shown in Fig. 1

-Fig. Bis a transverse sectional view a citizen ofjthe United States, and ahaving hard and soft of the shield is constructed to taken substantially on line 5-5 of Fig. 4. Fig. 6 is a sectional elevation of a shield shown in Fig. 1, but taken at right angles to the section shown in Fig. 4

Fig. 7 is a sectional elevation of the bolt anchor showing the anchor in expanded position in an opening or wall.

' Fig. 8 is a transverse sectional elevation 5 taken substantially on line 88 of Fig. 7

Fig. 9 is a sectional elevation of the con- I struction shown in Fi 7, but taken substantially at right ang es to Fig. 7.

Fig. 10 is an elevation. of another form of shield constructed in accordance with the invention, and

Fig. 11 is a transverse sectional elevation takensubstantia'lly on line 11- -11 of Fig. 10.

The invention may be briefly described as comprising a one piece shield of relatively tween the bottom and body portion and to or bolt and pass outwardly in the openings between the connectingmembers. ,In particular form of the invention shown, the bottom is conical in shape thereby directing the flow of the metal which is acted on by the bolti' The shield is alsowardly projecting lugs or preventing rotation of the shield.

rovided with outthe Like characters of reference desi ate corresponding parts in all views 0 the drawings.

The shield constructed in accordance withinvention comprisesa body portion 20,

III a bottom 21 and deformable strips 22 which connect the-body portion to the bottom. A plurality of lugs 23 is formed on the outer wall of the body portion 20 and thw I prevent the rotation of the shield in t e wall opening. The bottom 21 has an inner surface 24 conical in shape, or, expressed in other words, the surface 24 forms an acute.

angle with the inner wall of the shield for a purpose hereinafter set forth.

'lhe otherend of the shield has a threaded into the shield, the inner end of the bolt will engage the soft metal filler 26 and Will force the filler laterally through the openings 27 between the strips 22 and this movement of the soft metal will also deform the strips 22 forcing them laterally into engagement with the wall opening as shown. particularly in Fig. 9. This flow of the soft metal is directed and assisted by the conical bottom surface 24.

In Figs. 10 and 11 another form of the invention is shown andin this form each of the strips 22 has formed thereon one' or more outwardly extending ribs 29 and when the strips 22 are deformed the ribs.

will be pressed into firm and tight engagement with the wall opening thereby assisting inretaining the shield in place.

From the above description, it will be seen that an exceedingly firm and-secure anchorage may be obtained by utilizing the construction described and furthermore that the construction is simple, practical and comprises few parts.

Although certain specific embodiments of the invention havebeen illustrated and described, it will be understood that the invention is capable of further modification and that changes in the construction and in the arrangement of the various cooperating parts may be 'made without departing from the spirit or scope of the invention. as expressed in the following claims.

lVhat I claim is: c

1. An anchor comprising a one piece expansion shield of relatively hard metal and having expansible elements and an expanding element consisting of a mass of relatively soft metal positioned within said shield, and substantially filling the space between said expansible elements.

2. An anchor comprising a one piece expansion shield of relatively hard metal and having expansible elements and. perforations and an expanding element of relatively soft metal positioned within said shield and adapted to expand said elements and to extend through the perforations.

An anchor comprising a one piece ex pansion shield of relatively hard metal and having expansible elements, an expanding element of relatively soft metal positioned within said shield, and means for directing the flow of the soft metal laterally as the expanding element is compressed.

4. An anchor comprising a ,one piece exshield for directing the flow of the soft metal laterally as the expanding element is compressed.

5. In an anchor, a shield having a closed bottom, spaced strips connecting the bottom to the body of the shield and a soft metal expanding element positioned in the shield adjacent the bottom and substantially filling the shield within the strips.

6. In an anchor, a shield having a closed bottom, spaced strips connecting the bottom to the bod of the shield, a, softmetal expanding e elnent positioned in the shield adjacent the bottom and substantially filling the shield within the strips, and means carried by the bottom of the shield for directing the soft metal laterally through the spaces between the strips and against the strips as the soft metal element is compressed.

7 In an anchor, a shield having a closed bottom, spaced strips connecting the bottom to the body of the shield and a soft metal expanding elementpositioncd in the shield adjacent the bottom and substantially filling the shield within the strips, said bottom having an inwardly extending conical surface for directing the soft metal laterally as the expanding element is compressed.

8. A perforated expansion shield having .a closed bottom provided with a surface inclinedto the wall of the shield.

9. A one piece perforated expansion shield having a closed bottom providedwith a surface inclined to the wall of the shield.

10. A one piece expansion shield having spaced, longitudinal, deformable strips, and a soft metal mass disposed adjacent to and adapted to deform said strips. 4

11. In combination. a one piece expansion shield having spaced, longitudinal, deformable strips, and a soft metal, expanding element in the shield and adapted to deform the strips. v

12. A one piece expansion shield of relatively hard metal comprising a body portion, a closed bottom and a plurality of spaced longitudinal strips connecting the body portion to the bottom.

13. A one piece expansion shield of relatively hard metal comprising a body 'portion, a bottom and a pluralityof spaced longitudinal strips connecting the body portion to the bottom, said bottonrhav-in an inwardly extending portion having sur aces forming an acute angle with the Wall of the shield.

14. A one piece expansion shield. having a closed bottom and having perforations in the wall adjacent the bottom, the bottom having an inner surface formin an acute in the wall adjacent the bottom, the bottom having a conical inner surface 16. A one piece expansion shield of relatively hard metal comprising a body portion, a closed bottom and a plurality of spaced, lon itudinal, ribbed strips connecting the b y portion to the bottom.

17. A one piece expansion shield of relatively hard metal comprising a body portion, a closed bottom and a plurality of spaced, longitudinal strips connectingthe body portion to the bottom, said strips hav ing transverse outwardly. projecting portions. I

18. An anchor comprising a one iece expansion shield of relatively har metal. having a threaded bolt-receivln portion and having expansible elements and an expanding element of relatively soft metal positioned within said shield and transversely filling the space between said expa-nsible elements.

19. An anchor comprising a one pansion shield of relatively har metal, having a bolt receiving opening and having expansible elements and an expanding element consisting of a mass of relatively soft metal extending across the path of a bolt positioned in the bolt receiving opening.

20. An anchor comprising a one piece expansion shield of relatively hard metal having a threaded opening for receiving a bolt and haying lateral openings and an expanding element of relatively soft metal disposed in the path of movement of a bolt positioned in the threaded opening and in a position to pass through the lateral openings.

21. An anchor comprising a one iece expansion shield of relatively har metal, having a bolt receiving opening and a closed end opposite said openin and having expansible elements and an eizpanding element consisting of a mass of relatively soft metal disposed in said closed end and in the bolt receiving opening. 1

22. In an anchor, a shield having a closed bottom and lateral openings adjacent the bottom and a soft metal expanding element positioned in the shield adjacent the bottom.

v 23. 'In an anchor, a shield having a closed bottom and lateral openmgs'and expansible portions adjacent the bottom and a soft com ression an piece ex-- metal expanding element positioned in thc shield adjacent the bottom.

24. The method of securing a fastening to a wall, ceiling or other support consisting in inserting the fastening in the hole in the Wall, ceilingor other support, pressing a compressible substance. located within the fastening against an expanding member located in the fastening to force openings in the fastening by both compression and wedging action and into binding contact with the walls of the hole, and then securing the object to be supported to the fastening so held in the hole.

25. The method of securing a fastening to a wall, ceiling or other support consisting in inserting the fastening in the hole in the wall, ceiling or other support, presing a compressible substance located within the fastening against a wedge located in the fastenin to force (portions of the compressible su tance ra ially in two directions through openin in'the fastening by both wedging action and into bin ing contact with the walls'of the'hole, and then securing the object to be supported to the fastening so held in the hole.

26. The method of securing a substantially rigid expansion bolt to a wall, ceiling or other su port consisting in inserting the substantial y ri 'd expansion bolt in the hole in the wall, ceiling or other support, pressing a compressible substance located within the substantially rigid expansion bolt against an expanding member located in the substantiallyrigi d expansion bolt, to force portions of the compressible substance radially through openings' in the substantially rigid expansion bolt by both compresion and wedging action, and into binding contact with'ithe walls of the hole backfrom the surface of said wall or other support, and then securing the object to be supported to the substantially rigid expansion bolt.

27. A new article of manufacture comprising an expansion bolt having a hollow perforated portion adapted to extend into a hole and means to support a bolt or screw, compressible material mounted within the hollow perforated portion, and adapted to be forced radially through the perforations to make a bond or grip with a wall or other suitable support.

In witness whereof, I have hereunto set myhand this th day of October, 1924.

CHARLES C. TOMKINSON.

ortions of the compressible substanceradia ly through

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2535079 *May 2, 1944Dec 26, 1950United Air Lines IncMethod of upsetting a hollow rivet
US2849866 *Oct 14, 1953Sep 2, 1958Fredrik Flygare AdolfRoof-bolting
US5044852 *Feb 18, 1988Sep 3, 1991Theodore Sweeney & Company, Inc.Vacuum fixed adhesively secured fastener
US5352066 *Nov 26, 1991Oct 4, 1994The Eastern CompanyMine roof/bolt anchor assembly and method of installation thereof
US6955515 *Dec 9, 2003Oct 18, 2005International Business Machines CorporationLocking turn pin