US1752752A - Expansion shield - Google Patents

Description

2 Sheets-Sheet l Z2 Il R. E. OGDEN EXPANSION SHIELD Filed May 3, 1923 ,94 am K4 z5 z/ April 1, 1930.

ATTORNEY April 1, 1930 R. E. OGDEN 1,752,752

Y EXPANSION SHIELD Filed May', 1923 2 Sheets-Sheet 2 /6 fg/Ji M 362m" INVENTOR A TTORNE Y l Passed Appr. 1, 193e UNITED STATES PMENT OFFICE RAIPE OGDEN,-OF MOUNTAINVILLE, NEW YORK, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO J'. EDWARD OGDEN COEPANY, OF NEW YORK, N. Y., A. CORPORATION l' NEW JERSEY EXPANSION SHIELD Application led May. 8, 1923. Serial No. 636,390.

This invention relates to improvements in bolt anchors of the character employed for obtaining anchorage in walls of brick, stone and cementitious material not adapted to directly receive a threaded member.

One of the objects of the invention is to vprovide an expansion shield so const ruc.ted and 'arranged as to possess superior gripping qualities.`

Another object of the invention is to provide a shield and an expanding member for the shield so relatively constructed and arranged as to obtain gripping actions at a plurality of different points or areasc throughout the length of the shield.

Another object of the invention is to provide an expansion shield adapted to be used with and expanded by a driven expandlng member.

Another object of the invention is to provide an expansion shield comprising t wo exactly similar sections thereby rendering the sections interchangeable and reducingto a minimum the cost of manufacturing.

Another object of the invention is to provide an expansion shield particularly adapted for use with'a cable clamp.

Another object of the invention is to provide an expansion shield, a 'cableclamp and a bridle ring so relatively constructed and arranged that the ring has a shank for expanding the shield and.also has means for retaining the cable in position.

Further objects of the invention will appear from the following specification taken in connection with the drawings, which form apart of this application, and in which Fig. 1 is an elevational View of one form of expansion shield constructed in accordance with the invention.

Fig. 2 is an elevational view taken at right Y an les to Fig. 1.

Fig.y 6, but showing longer tabs than those shown in Figs. 1 to'6.

Fig. 8 is a sectional elevation of the construction shown in Figs. 1 and 2, but illustrating the shield in position in a wall opening and securing an object to the wall and showing one form of expanding element adapted for use in connection therewith.

Fig. 9 is a sectional elevation similar to Fig. 8, but showing a screw as the expanding element.

Fig. lO is an elevational view similar to F ig. 1, but showing wider tabs than those shbwn in Figs. 1 and 2.

Figs. 11 and 12 are sectional elevations taken respectively on lines'11-11 and 12-12 of Fig. 10.

Fig. 13 is a sectional elevation of another form of shield constructed in accordance with the invention in which an encircling band is used in the place of the tabs shown in the preceding figures.

Fig. 14 is a transverse sectional elevation taken substantially on line 141-14 of Fig. 13.

Fig. 15 is anelevational view illustrating another form of shield constructed in accordance with the' invention in which the metal at the edges of the shield sections is folded l invention, illustrating the Ishield as corru- 4 gated.

Fig. 18 is a transverse sectional elevation taken substantially online 18-18 of Fig. 17. Fig. 19 is an elevational 'view showing the shield mounted in a w'allopening and securing thereto a cable clamp and bridle ring.

Fig. 2O is an elevational view showing another form of bridle lring having the expanding elementformed integral therewith, and Fig. 21 illustrates' still another form of bridley ring adapted for use in connection with the shield'f` n The invention briey described consists in an expansion shield particularly adapted-for use with a driven expanding element. The shield is substantially cylindrical imshape and comprises a pair of exactly similar sections, each sec'tion having formed therein depressed portions adapted to receive means for securing the `sections together. In certain embodiments of the invention, each section is provided with tabs adapted to engage the other section and in other embodiments of the invention, the sections are secured together by a band engaging both sections. The and and tabs form excess metal and the depressions form internal projections or embossments adapted to be engaged by the expanding element.

The shield also has formed on its outer end a laterally extending ange and in use the shield is adapted to pass through the opening in an object to be secured and the iiange is adapted to seat against the object. The shield is particularly adapted for' use with a headed expandin element, such as a nail or screw and these e ements may be driven into the shield. The head of the expanding element serves to reinforce the flange on the shield. One use of the invention is shown in Fig. 19, wherein a bridle ring and cable clamp are secured to a wall,.but other applications or uses of the invention will be obvious to those skilled in the art. When used with a bridlefrin or cable clamp, these elements may be secure by 'any desired form of expanding element y or, as shown in Figs. 20 and 21, the bridle ring may be formed with a shank adapted to enter and expand the shield. Further details of the invention will appear from the following description.

In the particular embodiment of the invention illustrated in Figs. 1 to- 7 inclusive, the shield comprises a pair of sections 20 and 21, each section have a iiange 22 at its outer end, these flanges forming a single ianged end for the shield when the sections. are secured together.

The two sections of the shield are exactly alike and each section has a pair of longitudinally spaced tabs 23 formed at'one of its c dges and a single tab 24 formed at the opposite edge and disposed intermediate the pair of tabs. The edge of the section having the siigle tab has formed at each side of said tab a epression 25 disposed in alinement with the tabs of the pair at the opposite edges. The edge of the section havin the air of tabs has formed therein interme 'ate t 's pair and alinement withf-the single tab on the opposite edge a de ressibn 26. These depressions forin inward y extending protuberances or einbossments and are engaged by the expanding element 'when this element is forced into the shield. l When the sections are secured together. as lllustrated in the drawings, the tabs of each sectionoverlap the other-section and seat in the depressionsformedtherein. These depressions in conjunction withjthe tabs form an excess of metal which is 'expandedinto firm, gripping engagement with the inner surface of the wallropening.

The depressions25 and 26 form shoulders at the ends thereof for confining the excess metal of the tabs and insure the radial expansion of the tabs by the expanding element.

Furthermore, the tabs are retained against possible shearing or relative longitudinal movement with reference to the shield. When the shield is expanded the interlocking of the tabs or excess metal inthe depressions and. engagement of the tabs in the wall opening securely retains the shield against withdrawal.

In the embodiment of the invention shown in Fig. 8, an object 30 has an opening 31 therein of substantially the same diameter as the outer diameter of the shield. The' shield is, therefore, passed through this opening and positioned in the wall opening and thereafter an expanding element such as a nail 32 is driven into the shield expanding it into firm, gripping engagement with the wall opening. The nail preferably has 'a tapered end 33 and a head 34. The head 34 serves to reinforce the flange 22 of the shield thereby aiding and retaining the object 30 in position.

The shield may, however, be used in conjunction with a screw 36 such as illustrated in Fig. 9 and this screw may be driven in or screwed into the shield.

The sectional view in Fig. 7 differs from the showings in the preceding figures in that the tabs 37 are longer than the tabs 23 and 24 and it should be understood that these tabs may be made in any desired form or shape.

In Figs. 10, 11 and 12, the tabs 39 and 40 are formed wider than those shown in the preceding figures. Y

In the embodiment of the invention illustrated in Figs. 13 and 14, the shield sections 20 and 21 are formed with longitudinal depressions 41 and the sections are secured together by means of an elongated split band 42. The depressions 41 form shoulders in the shield at the ends thereof. These shoulders serve to confine the sleeve or split band 42 and to prevent relative longitudinal movement between the band and shield when the sleeve is inserted or driven into the opening and to prevent withdrawal of the shield after by the depressed portions 41. When the shield and band are expanded by the member 32 or 36 the inner shoulder prevents the band from being forced longitudinally inwardly alon the shield as the intermediate shoulder is bent by the action of the expandingl member. In Figs. 15' and 16 the shield sections 20 and 21 are .depressed throughout the major portion of the lengthand the metal at the edges of the sections at the depressed portions thereof is folded back on the outer surface of the shield as shown at 43. Each section adjacent the outer end thereof is provided with a depression 44 and a tab 45, the tab of one section seating in the depression of the other section.

In Figs. 17 and 1s the Shield is provided this flange has an opening 55 for receiving the shank of the securing and expanding element 32. When the parts are assembled as shown in Fig. 19, the shield is first passed through the opening in the cable clamp ange 51 and the bridle ring is then positioned with its ange 54 abutting the flange 22 of the shield. The expanding and securing element 32 is theninserted through the opening 55 and the flange 54 of the bridle ring and into the shield. This element will then expand the shield into a firm' and gripping engagementwith the wall openin In Fig. 20.y a bridle ring 56 is illustrate this ring having a flange 57 and a shank 58 This form of bridle ring may be used without any other expanding or securing element. A

In Fig. 21 the bridle ring 59 has formed thereon an annular flange 60 and an integral shank 61.

From the foregoing specification, it will be seen that a very simple and practical expansion shield construction has been designed and that the shield is well adapted to perform the desired functions and accomplish the objects set forth. It will also be noted that this shield is especially7 adapted for use with cable clamps and bridle rings.

Although certain specific embodiments of the invention have been particularly shown and described, it will be understood that the invention is capable of 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 I in the following claims.

What I claimis:

1. In combination, an expansion shield comprising a pair of sheet metal sections, each section having tabs thereon overlapping and engaging the other section and having inwardly extending embossrnents on the inner surface thereof formed by depressions in the shield, said depressions receiving'said tabs, and an ex airdmg element adapted to be driven into t e, shield from the outer end thereof and having a diameter as great as the maximum inner diameter of the shield, said expanding element being adapted to engage the embossments and force outwardly the embossments and tabs.

2. In combination, an expansion shield comprising-a pair of sheet metal sections, each section having tabs thereon ,overlapping and engaging the other section and having oppositely disposed depressions forming inwardly extending embossments on the inner surface thereof, the tabs being seated in the depressions, and an expanding element adapted to be driven into. the shield from the outer end thereof and having a diameter substantially y as great as the maximum inner diameter of the shield, said expanding element being adapted to engage the embossments and force outwardly t-he embossments and tabs.

3. In combination, an expansion shield comprising a pair of sections `formed of sheet metal, each section having a plurality of tabs and a plurality of depressions extending into the bore of the shield,`said tabs and depressions being so relatively arranged that the tabs of each section engage the depressions in the other section, and an expanding ele-` ment adapted to be driven into the shield from the outer end thereof and to engage the inwardly extending depressions and force said depressions and tabs outwardly.

4. In combination, a substantially cylindrical expansion shield comprising a pair of sections, each section having tabs thereon overlapping and engaging the other section and havin portions thereof depressed forming inwardly extending embossments on the inner surface thereof, said depressions receiving said tabs, and an expanding element adapted to be driven into the shield from the outer end thereof and toengage said embossments and force the embossments and tabs outwardly.

5. A substantially cylindrical expansion shield comprising a pair of sections,'means for securing the sections together, said means including depressionsforming inwardly extending embossments, decreasing the internal diameter of the shield and excess metal ldisposed in said depressions, and a driven expanding member ada ted to engage the embossments and force t e embossments and excess metal outwardly.

6. In combination, a substantially cylindri-` cal expansion shield comprising a pair of sec-l tions, said sections bemg depressed to form a plurality of pairs of inwardly extending oppositely disposed embossmentson the inner surface thereof, excess metal on the outer surface ofthe shield disposed in the depressions and ,holding said sections together, and an expanding member'adapted to be driven into the shield from the outer end thereof and to engage 4the embossments and force the shield sections outwardly. c 7. In combination, an expansion shield of hard metal having its bore constricted at an intermediate portion of its length and a thin divided flange of non-expansible metal integral with the shield about one end thereof and' substantially at right angles to the shield axis, and an expanding element adapted to engage and expand the constricted ortion and having a head adapted to over` ap ,and reinforce said flange.

8. In combination, an expansion shield having depressed portions constricting the bore and having a ange at one end thereof, excess metal on the outer surface of the shield disposed in the de ressed portions and an expanding element having a head adapted to coact with the flan-ge to reinforce said iiange.

9. In combination, an open ended expan sion shield having a depressed ortion constricting the bore and having a ange at one end thereof, metal disposed on the outer surface of the shield and disposed in the de ressed portion and an expanding element having a head adapted to coact with the flange to reinforce said flange.

10. An expansion shield comprising a sheet metal, substantially cylindrical open ended tubular member having a Hange at one end extendin laterally beyond the outercylindrical sur ace of the shield and having depressions formed in and extending into the bore of the member thereby decreasing the internal diameter thereof and metal on the outer surface of the shield disposed in said depressions.

11. An expansion shield' comprising a sheet metal tubular member having a iange at the outer end thereof extending laterally beyond the outer cylindrical surface of the shield, said shield having a longitudinal parting therein, said member being depressed at one side of the parting and having a tab bridging the parting and disposed in the depression, the depression constricting the bore of the shield. l

12. In combination, an expansion shield formed of sheet metal and having a flange at the outer end thereof and having a depression therein constricting the bore of the shield and forming shoulders at the ends of the de ression and metal on the outei surface o the shield and disposed between said shoulders and' in the depression, and an expandin element adapted to be driven into the s ield from the outer end thereof and Vhaving a diameter substantially as great as the maximum inner diameter of the shield.

In Witness whereof, I have hereunto set my hand this 1st day of May, 1923. v

RALPH E. OGDEN.

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