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Publication numberUS1639231 A
Publication typeGrant
Publication dateAug 16, 1927
Filing dateMay 19, 1923
Priority dateMay 19, 1923
Publication numberUS 1639231 A, US 1639231A, US-A-1639231, US1639231 A, US1639231A
InventorsEdward Ogden John
Original AssigneeEdward Ogden John
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Bolt anchor
US 1639231 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

Aug.16.1927. '1,639,231

J. E. OGDEN BOLT ANCHOR Filed May 19, 1 923 2 Sheets-Sheet 2 4 j@ 'g Z/ 5' 46 IN VN TORl Patented Aug. 16, 1927.

JOHN EDWARD OGDENOF MOUNTAINVILLE, NEW .YORK.

' BOLT ANCHOR.

Application led May 19,

This invention relatesto improvements in bolt anchors of the character: employed yfor obtaining anchorage in walls ofbriclr, stone or cernentitious material notadapted to di-` rectly receive a threaded member.

One of the objects of thek invention is to provide an expansion Yshield so constructed and arranged as to possess ,superiori gripping qualities.

Another yobject of the invention isv to provide ya [shield and `expanding1 elements adapted to coact therewith, the shield and .elements being so relatively constructed and arranged as to'effect gripping connections at a plurality of diiiferent pointsor areas throughout the length of the shield.v

Another object of the invention is to providea vbolt anchor that canbe'set deep in awall opening or spaced' inwardly from the outer edge of the opening whereby the expansion thereof will not spall the concrete.

Further objects kof the invention willv appear from the `following specification taken yin connection with the drawings, which form a part of this application, and in which Fig. lis an elevational view illustrating a bolt anchor positionedin a wall opening' yand constructed in accordance with the in# vention.

Fig. 2 is aview similar to Fig. lbut show.-` ing the outer end of the shield expanded and the inner endvpartially expanded.

Fig. 3is a view similar tol Figs. 1` ,and 2, but showingbothjends of the shield expanded.

Fig. e is anpelevational view showing the shield and expanding elements.

Fig. 5 .is an end Vlevation of the innerA i endy f the bolt anchor illustrated in` Fig. `1.

Fig.. 6 vis an end elevation of the oppositev end of the boltanchor.

Fig. 7 is a transverse sectional elevation taken substantially on line 7-7 of Fig. 4.

Fig. 8 is alongitudinal sectional elevation of a bolt anchorillustrated in Figs. 1 'to 4.

Fig. 9 is an elevational V'view of thepex-k panding sleeve used at the outer end ofthe shield. l Y

Fig. A1() is an end elevation of the inner or tapered end of the sleeve.

Fig. 11 isan end elevationr of end of the sleeve."

yFig. 12 is an elevationalviewY similar to the opposite Fig.` 11, but showing the` sleeve as made up of apair of sections.

l A i is a view similar to Fig. 12, hat` 1923. serial No. 640,097.

showing a pair of sections, the plane of division betweenthe sections being at right 'angles to the plane of division between the of an expansion shield having expansiblev portions atboth ends and expanding elements at'both ends for expanding saidportions. In the embodiment of the invention shown the expanding element for the inner end consists of a nut tapered longitudinally and adapted to travel-longitudinally in the shield and force the expansible portions outwardly. The expanding element `for the lopposite end of the shield consists of a sleeve adaptedto be positioned within the outer endy of the shield.v The sleeve and shield Yhave coengaging portions v'such as lan inturned tab on Athe shield disposed vwithin an elongated slot in the sleeve. The shield is expanded by forcing the sleeveinwardly and by drawing the nut-y inwardly into the shield thereby pressing the exp'ansible' portions radially outward into Lfirm gripping engagement with the wall opening. Further details Vol the invention will appearfrom the following description.y

In the particular embodiment of t-he invention show-n, the expansion shield comprises a pair of sections 2O and 21 which are secured together intermediate their ends by a splitlring l22 seated in an annular depres- `sion 23. The shieldVV is adapted to be expanded at Abothfends and is formedV at its respective ends with?A a plurality of longitudinally extending, preferably tapered.

Vfingers '24 and 25.` 'The fingers 24 are inturnedattheir ends as shown at 26 and these ends 26 as shown in Fig. 5 overlap the outer end of the` expanding nut 27 and retain the nut withiny the shield.

The nut 27 has a substantially square end 28 and aA conical opposite end 29, these ends being; connected `by tapered,k portions; 30 adapted to engage and expandtlie shield.

particular shape 'of the inrit 's'not l the sleeve 33.

12 and 13.

portant and any desired form of tapered expanding element may be used.

Certain of the tapered fingers 25 at the opposite end of the shield are turned inwardly as shown at 31. These inturned ends are received in longitudinal slots 32 formed in a sleeve 33. The remaining fingers 25 which are indicated at 25X are not inturned but lie along the flat surfaces of the sleeve 33 and function as guides, and retainers for the sleeve and are made of the proper lengths to gauge the position of the shield in the hole. The sleeve 33 as particularly shown in Figs. 9 to 11 is tapered at one end as shown at 34 and is substantially square.

in section at the other end and attention is called to the fact that the sleeve 33 is formed of heavier stock or is thicker than the wall of the expansion shield.

When the bolt anchor is Vassembled the parts are disposed in the position illustrated in Figs. 4 and 8 Where the nut 27 is disposed within the tapered fingers 24 at one end of the shield and the sleeve 33 is disposed within tapered fingers 25 and 25X at the other end of the shield. The inturned ends 31 of certain of the fingers 25 are located in the slots 32 in the sleeve 33 and the other fingers 25 as shown particularly in Fig. 6 extend along the flat outerV faces of The sleeve illustrated in Figs. 9, 10 and 11 is formed from a single piece of material but the sleeve may be sectional as shown in Figs. In Fig. 12 the sections are divided in a plane at right angles to the center lineY of the slots 32 and in Fig. 13 the sections are divided in a plane coinciding with the center line of the slots.

In Figs. 14 and 15 the shield comprises a pair of sections 4G and 41 having tapered fingers 42 formed at one end only theieof. At the opposite end are formed inwardly extending tabs 43 adapted to be positioned in the slots ofthe sleeve.

1 In Figs. 13 to 18 inclusive a slightly dif ferent shape of sleeve is illustrated. The sleeve in this instance comprises a pair of sections '45 and 46 having longitudinally extending, tapered ridges or corrugations 47. Slots 48 corresponding tothe slots 32 in the other form of sleeve are disposed with their vcenter line coinciding with the plane of di- `the insertion of the shield in the hole. Af-

ter the anchor has been so inserted, the nut 27 and the sleeve 33 can be drawn together lengthwise in the shield by means of the bolt 50 or in any other suitable manner a sufficient distance to cause the ends of the Vshield to expand into engagement with the wall opening as shown in Fig. 2. The bolt 50 can then be withdrawn and the sleeve can be driven in flush with the surface of the wall it this has not been accomplished by the previous operation, thereby expanding this end of the shield into firm gripping'V 4 engagement with the wall opening.

Attention is called to the fact that the expansible portions of the outer end of the shield are spaced'inwardly tromA the outer edge of the Wall opening and, therefore, the expansion of thisV end of the shield does not spall the concrete. The bolt can then be reinserted and the object 51 to be secured in position Y can be firmly supported. As the bolt 50 is turned Vin the nut 27, the nut will be drawn longitudinally in the shield to some such position as that illustrated in Fig. 3 if this end of the shield has not been fully expandl ed by the previous operation. In this Yfigure it will be seen that the shield is expande-fl i into firm gripping engagement with the wall opening by the nutand by the sleeve.

Another method of expanding this shield.

would be to place it Within the hole sothat Y the outer end of the sleeve 33 Vis flush with the surface of the wall or slightly protruding. The work 51 is then placed in position and the bolt 50 inserted. Vilhe bolt '50 when manner as those illustrated in the VIn'eceding figures and. therefore, a description ofthe use thereof is not deemed necessary. Y

The corners of nut 27 and'of the sleeve 33 `are drawn into the interior of the shield in the fully expanded positions Vand there is no tendency for them to be released when the bolt 50 is removed. The bolt can be removed at will without disturbing the shield.

Although certain specific embodiments of the invention have beenparticularly shown and described, it will be understood that the invention is capable of modification and' that changes in the construction and,V in the arrangement of the various cooperating parts may be made without departing from the spirit or scope of the invention as eX- pressed in the following claims.

TNh'at l claim is:

1. In combination, an expansion sh-ield i comprising a plurality of sectionseach section having a plurality of longitudinally e};- tending lingers at each end thereof,` said fingers being tapered in width, and expanding elements disposed within said fingers.

2. In combination, an expansion shield comprising a plurality of sections, each section having a plurality of longitudinally extending lfingers at each end thereof, said fingers being tapered in width, and expanding elements disposed within said fingers, one of said expanding elements having flat surfaces engaged by the inner surfaces of the nngers.

3. In combination, an expansion shield comprising a plurality of sections. each section having a plurality of longitudinally extending lingers at each end thereof, said fingers being tapered in width, and expanding elements disposed `within said fingers, one of said expanding elements having fiat surfaces engaged by the inner surfaces of the lingers and having portions disposed between said fingers. l

4. A bolt anchor comprising a sheet metal expansion shield having longitudinally extending fingers with inturned end portions and a tapered sleeve for expanding said shield having slots receiving the inturned ends of the fingers, the ends of the slots limiting the movement of the sleeve relative to the shield. Y

5. A bolt anchor comprising an expansion shield having longitudinally extending fingers with inturned end portions and a tapered sleeve for expanding' one end portion of said shield having slots receiving the inturned ends of the fingers, and a tapered expanding element for the other end of said' shield.

6. A bolt anchor comprising a shield having expansible portions and a sleeve adapted to expand said portions and having a slot' therein intermediate the ends thereof, said shield having a tab received in saidslot and confined by the ends thereof.

7. In a bolt anchor, an expansion shield comprising a plurality of sections, each section having longitudinally extending fingers at each end thereof and' a pair of tapered expanding elements adapted to travel longitudinally in said shield andexpand said ngers said expanding elements having flat surfaces engaged' by said fingers.

8. A bolt anchor comprising an expansion shield having longitudinally extending tapered fingers at both ends thereof and expanding elements disposed within said fingers, one of said expanding elements consisting of an elongated sleeve extending beyond the end of the shield, said elongated sleeve being provided with longitudinal slots, and the ends of some of the tapered fingers at the end of the shield within which said' sleeve is disposed being inturned to engage said slots.

9. A bolt anchor comprising an expansion shield having longitudinally extending tapered fingers at both ends thereof and expanding elements disposed within said fingers, one of said expanding elements consisting of an elongated sleeve extending beyond the end of the shield, said elongated sleeve being provided with longitudinal slots shorter than said sleeve, and the ends of some of the tapered fingers at the end of the shield within which said sleeve is disposed being inturned to engage said slots, the engagement of the int-urned fingers with the ends of the slots being arranged to limit the longitudinal movement of the sleeve.

10. A bolt anchor comprising an expansion shield having longitudinally extending spaced fingers at each end thereof and an expanding element at each end of said shield having substantially flaty surfaces engaged by the inner surfaces of said fingers and parallel to the shield axis.

11. A bolt anchor comprising an expansion shield having longitudinally extending spaced fingers at each end thereof and an expanding element at each end of said shield having substantially fiat surfaces contacting with the inner surfaces of said fingers and parallel to the shield axis and having portions extending between said fingers.

12. A bolt anchor comprising an expansion shield having longitudinally extending spaced fingers atr each end thereof and an expanding element at each end of said shield having substantially flat surfaces adjacent said fingers, one of said expanding elements having a slot therein and one of the fingers having an offset end received in said slot whereby relative movement between the said slotted element and the shield is limited.

. 13. A bolt anch-or comprising an expansion shield having longitudinally extendingv fingers at each end thereof, a threaded expanding element disposed within said lingers at one end of the shield and a sectional Ahollow tubular expanding element at the other end of the shield, and means engaging the sections ofthe tubular element for limiting the movement of said element relative to said shield.

14. A bolt anchor comprising an expansion shield having longitudinally 4extendingfingers and a hollow sleeve for expanding Y the shield and having flat surfaces contacting with said fingers, and means for limiting the movement ofsaid sleeve relative to said shield.-

15. A bolt anchor kcomprising an expansion shield having longitudinally extending fingers and a hollow sleeve for expanding the shield and having Hat surfaces contacting with said fingers, and means for limiting the movement of said sleeve in both directions relative to said shield.

In witness whereof, I hereunto set my hand this 17th day of May 1923.

. 1 JOHN nnwxznn oennn.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3974734 *Jun 14, 1974Aug 17, 1976Maechtle FritzExpandable anchor stud
US5169269 *Jan 28, 1992Dec 8, 1992Shunji TatematsuOne-strike wedging type blank nail
US5816759 *May 8, 1997Oct 6, 1998Illinois Tool Works Inc.Expansion anchor and method therefor
US6293743Sep 18, 1998Sep 25, 2001Illinois Tool Works Inc.Expansion anchor and method therefor
Classifications
U.S. Classification411/26
International ClassificationF16B13/06
Cooperative ClassificationF16B13/068
European ClassificationF16B13/06D4B