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Publication numberUS1003527 A
Publication typeGrant
Publication dateSep 19, 1911
Filing dateNov 25, 1910
Priority dateNov 25, 1910
Publication numberUS 1003527 A, US 1003527A, US-A-1003527, US1003527 A, US1003527A
InventorsEdward C Smith
Original AssigneeEdward C Smith
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Anchoring device or bolt.
US 1003527 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)



1,003,527, Patented Sept. 19,1911.


nnwaanc. SMITH, or 'cHIcAGo, ILLINOIS.


[ all uiho'm 'it 'may concern:

Be it known' that I, EDWARD C. SMITH, a

. citizen 4of the United States, residingiat Chicago, in the county of Cook and State' of Illinois, have `invented certain new and useful Improvements in Anchoring Devices or Bolts, of which the following 1s a description.

My invention belongs to that general class of devices known as` anchoring devlces,l or

what are commonly called toggle bolts for anchoring bolts or screws in walls -or the like, Where the nature of the material ,of which the wall is made is such that` it will not permit the bolt or screw to take a firm or secure hold, for illustration, where the Walls are made of a composition of material or plaster, etc., that will easily cru1nble or break, it is 'diiiicult to satisfactorily secure fixtures thereto unless the bolts or' screws are provided with means for engaging the wall. This is particularly t-rue 1n the case where tile or hollow blocks or slabs are used or what is known as wire plaster. In many places it is impossible, or inconvenient, to work at the back or inner face of the wall, so that means are employed that may be passed through the bolt or screw hole and engage one of the inner faces. Most of these appliances require a very large hole as compared with the bolt diameter.

My invention has amon its objects the production of a small, simp e, compact, convenient, efficient and satisfactory device of the kind-described, that will pass through a comparatively small hole and afford a irm and permanent anchor for the bolt or screw. B'y the employment of my device it is necessary to make the opening through'the wall only a trifle larger than the size of the bolt, a feature that is most important where the iXture to. be secured has a narrow iiange or Where the screw holes are placed near the edge of the fixture or flange thereon. The

device as preferably constructed may also be very readily removed from the hole without enlargement of the same or disigurement of the wall.

To this end my invention consists in the novel construction, arrangement and coin,- bination of parts herein shown and described, and more particularly pointed out p inv the claims.

In the drawings, wherein like reference characters indicate like or corresponding Specification of Letters Patent.`

parts.: Figure l is a sectional view of apor-` tion ofa wall and the space back-of the same, showing the devi-ce in use. Fig; Zis' a perspective view of'my`p'referred form of device and the screw. .Figz is alongitudinal sec 'onal view in partof the same. 4 is a -front elevation of a portion 'of a fixture and wall, 4parts of th'e lsame being broken away. Fig. 5 is a. viewin elevat-ion of the inner face of the Wall. Fig. 6 illustrates the manner of positioning the device in use.

Patented sept. 19,1911.

y Application led November 25, 1910. Serial No. 594,175. l

Fig. 7` illustrates the manner of removing the device.

Referring to the drawings, in which my preferredform of device is shown, 1 represents a member which is preferably tubular and cylindrical in form, provided with threads on the interior thereof for engagement with a bolt or screw 4. It is unnecessary to threadthe member l throughout its length, and I therefore preferably contract the same in diameter throughout a portion Iof its lengt-h, as indicated at Q, and thread the same at the contracted portion, as shown.

at 3. `The member l may be of any desired length and of any suitable material. At one end I provide a bar -6-7, which is pivotally secured by a pin 8, or its equivalent, on the interior of thel tubular member l, which is slotted on one or both sides as at 5. rThe bar 6-7 is preferably made with one end 7 a triielonger than the other end 6, so that the force of gravity will tend to draw the bar down to operative position. It will be particularly notedthat the member or bar 6-7 is of less width and thickness and greater length than the diameter of the tubular member 1, so that it does-not extend beyond the same when in. folded position, as shown in Figs. 3 or 6. y

In Fig. 1, -I show two toggle bolts` for securing the fixture 141-15, provided with a flange 13 to the wall 9, which has a space 10 in back of t-he same. In use the holes 11 are drilled or bored through the wall 9, the

againstthe inner ace of the wall. If debe provided and sired, the forevoing ends muy be formed and the bar 6-7 be of sufficient width so that the bar is' frictionally held in any position.

' In this case if a screw or bolt of sufficient length is screwed against the curved or beveled end 61, it will open the bar, after which the bolt may be drawn into operative holding position. The members 1 may be of sufiiclent lengthto extend fiush, or. slightly beyond the outer face of the wall 9, as shown in Fig. 1. In eases where the wall is of greater thickness than the members 1, it is not necessary to havethem extend to the face, as, for example, referring to Fig. 6, they might reach only to the dotted line 1S.4 This is shown merely as an illustration, it being obvious'that their position will depend upon the wall on which the bolts are used.

The bolts 4 may be passed through 4the holes in the flanges 13, either before or after the tubular members 1 and bars 6 7 have been arranged in position. The bolts may be in the form of bolts or screws, .the head either being formed integrally, or, for example, in the form of a nut 17, as shown in Fig. 6, and washers or their equivalents may be employed as desired. I-Ience I do not Wish to be understood as limiting myselfv to any particular form of bolt or s crew 0r fixture. l

In Fig. 7 I illustrate how the device may be removed when desired. Referring to the figure, the part l. is pushed back until the bar 6-,7 will clear Which'a-wire 21, inserted throughj bar.

.or its equivalent, may be the member l to fold the In case it is not entirely folded, for

engagethe beveled or cam shape entirely close or fold the fdevice'ln The wire may be provided with d end Vand removing. a hooked end 22 (see dotted lines in Fig. 7) so as tov engage the end of themember' 1, so. that upon drawing the wire 21 outward the device is drawn through the hole 11. -If desired the hollow tube 20 (see Eig. 7) Vmay threaded to engage, vthe threads on 'the interior of the tube. By means of this tube 2O the wire may be used to fold `the bar as before described, the tube affording means for engaging and withdrawing4 the device. l

As before mentioned, the device may `-be used wherever found applicable, but it is particularly convenient in securing fixtures, boxes, shelves, brackets, telephones, etc., in position on walls. or ceilings, particularly whenl composed of avmaterial of the charac- .ter described. By makingsame in the form,

shown, it is very compact and requires a and internally threade lthe wall in folding, after.

hole of minimum size to Ainsert or Withdraw the device, thereby avoiding large 'holes and the necessity of plastering or puttying around the screws or fixture flange, or boring a hole that will extendbeyond the flange of the fixtures.

Having thus described my invention, it is obvious that various immaterial modifications may be made in the same Without departing from the spirit of `my invention. Hence I do not wish to be understood as limiting myself to the exact form, arrangement, construct-ion or combination of parts herein shown and described or uses mentioned.

What I claim as new and desire to secure by Letters Patent is 1. A device of the kind described, c0mprising an internally threaded tubular member, having a longitudinal slot on each side at one end thereof, a bar and means' for pivotally securing said bar between its ends in said slot, said bar being of less thickness and Width than the diameter of said tubular member and said tubular member having a passageway from end to end thereof for the insertion of an operating tool.

2. A device of the kind described', com- \prising a tubular member contracted in diameter throughout al ortion of its length,

d at said contracted portion, said member slotted at one end on one side thereof, a bar arranged in said slottedend, and means for pivotally securing the bar thereto, said bar of a less thicknessand widthl and greater length than the diameter of said tubular member.

3. In a device of the kind described, and in combination, a bolt and a member therefor, .said member comprising a tubular member contracted in diameter throughout a portion of its length and internally threaded at said lcontracted portion and slotted at its outer end, a bar positioned in said slot, and means for pivotally securing the said bar thereto.

4. Av device of the kind described, comprising a tubular .member contracted in diameter throughout a portion of its length, said member belng slottedat one end on one side thereof, a bar pivotally mounted in said slotted'end, and operating means engaging said member at the contracted portion thel'ef."

`In ytestimony whereof, I have hereunto signed my name in the presence of two subscribing v witnesses.

Witnesses: -RoY W. HILL,


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2814942 *May 24, 1955Dec 3, 1957Sinner John BCrypt front fastener
US3127808 *Jun 18, 1962Apr 7, 1964Bernice L DrybreadToggle bolt
US3312138 *Mar 2, 1965Apr 4, 1967Cumming James DExpansion shell for rock bolts
US4502826 *May 16, 1983Mar 5, 1985Centre De Recherche Industrielle Du QuebecToggle fastener
US5110243 *Jul 19, 1990May 5, 1992Oh Jung HApparatus for attaching objects to a panel
DE3325800A1 *Jul 16, 1983Jan 31, 1985Heinrich LiebigAdhesive anchor
DE102006052664A1 *Nov 7, 2006May 8, 2008Ulrich LouisSupport console attaching device for building wall, has part including slotted hole of lug that is harder than complete part, round steel bar including threaded hole at slot, and clamping spindle screwed with clamping nut
DE102008033308A1Jul 16, 2008Jan 28, 2010Ulrich LouisObject i.e. console, fastening device for stone wall of building, has projection arranged in slot at one of opposite slot walls such that projection stays in engagement with recesses of sections that pivot in slot and form stop for strap
U.S. Classification411/340, 248/251, 54/53
Cooperative ClassificationF16B13/0808