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Publication numberUS843271 A
Publication typeGrant
Publication dateFeb 5, 1907
Filing dateNov 8, 1905
Priority dateNov 8, 1905
Publication numberUS 843271 A, US 843271A, US-A-843271, US843271 A, US843271A
InventorsJohn S Hanlon
Original AssigneeJohn S Hanlon
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 843271 A
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Description  (OCR text may contain errors)

PATENTBD FEB. 5, 1907.




Specification of Letters Patent.

Patented. Feb. 5, 1907.

To all whom it may concern:

Be it known that I, JOHN S. HANLON, a citizen of the United States of America, re.- siding at Willimansett, in Chicopee, in the count of Hampden and State of Massachusetts, ave invented new and useful Im rovements in Expansion-Nuts, of which t e following is a specification.

This invention relates to the class of improvements in expansion-nuts which are used to rigidly secure together two pieces of material of any suitable kind, as wood and iron, iron and masonry, or concrete andwood,

&c.; and it has for its object to provide a means which can be quickly and easily secured in place to attain the desired result.

The invention is fully illustrated in the accompanying drawings, and more particularly defined by the scope of the claims.

In the drawings forming part of this application, Figure 1 is a sectional View of the improvement as used. Fig. 2 is a longitudinal sectional view of the improvement. Fig. 3

is a vertical section on the line 3 3, Fig. 2,

taken through the key and barrel of the nut. Fig. 4 is a sectional view of a modification through the longitudinal slot in the barrel, showing the key after it has been pushed outwardly by the bolt after it has been screwed into the barrel and also showing holding-teeth on the bottom of the barrel. Fig. 5 is a vertical section through the barrel on the line 5 5 Fig. 4. Fig. 6 is a bottom plan view of the modification of the barrel, showing teeth or lugs diametrically opposite the key.

Referring to the drawin s, a designates a part of the material in whic the barrel of the improved nut is to be inserted.

' 1) indicates the bottom of the hole made by an ordinary bit in case the nut is to be inserted in wood.

. 0 designates the barrel of the nut, which is generally of iron or any suitable material.-

his barrel is internally threaded for a eater portion. of its length, as shown, while 5 designates the bored-out end of the barrel of larger diameter than the threaded portion. e indicates a vertical slot, which is cut lengthwise of the barrel and o ening into the threaded portion and in whic is adapted to be inserted a key f, made of iron, steel, or any suitable material. The shape of this key is triangular, the lower side of which has a smooth surface, (designated by 9,) as clearly shown in the drawings, while the upper edge ard size, with a squared head (shown in Fig. 1) and adapted to be turned by a wrench in the ordinary manner, while Fig. 4 shows I the ordinary machine-made bolt having a head is, with a transverse slot m therein when the bolt is to be turned by a screw-driver.

Referring particularly to Fig. 2, it is seen that the bolt t is turned outwardly, so that the teeth of the key f are flush with the outer edge or periphery of the hole of the barrel. W en the key f and bolt '5 are in this position, the nut can be readily inserted into a circular opening, which has previously been made in the woodwork or masom'gg of the structure, to which it is desired that a piece or attachment, as p, (shown in Fig. 1,) may be rigidly secured.

In the operation of this expansion-nut upon turning the bolt i into the barrel '0 the threads (1 thereon will slightly embed themselves into the key f, while at the same time the key f is forced outwardly by reason of the threaded end of the bolt engaging the inclined surface of the key when it stands in this position, as shown in Fig. 2, and by the continued pressure of the bolt & thereon the key is forced or embedded into the material, whatever it may be--as wood, brickwork, or masonry constructionthe bolt '1', being rotated until the head is brought firmly against the piece or attachment 1). In forcing the key f outward the threads on the end of the bolt are necessarily mutilated when the same are embedded into the key. The slot 6 is preferably made by milling, which 0 eration produces at the same time the inc ined shoulders s and t. The slot e ismilled of such a length that the inclined shoulders serve the purpose of preventing the key f from dropping inward into the barrel. When the bolt is screwed into the barrel, the forward end of the key is first moved outward, the rear shoulder t preventing the key from being moved rearward by the bolt. When the forward end of the key has been raised for a certain distance by the inward movement of the bolt '11, the key is rocked about the forward end of the bolt, throwing the rear end of the key outward into the position shown in Fig. 4. This rocking movement of the key is produced by the forward end of the key being elevated first until sufficient esist IOO ance the material qto its-further-movement is met, when this resistance will serve to rock the keyon the end of. the bolt i,as thesame is screwed into the barrel to throw out the rear end of the same, the key then assuranmg the position shown in Flgs. I and 4. These two shoulderss and I; serve the further.

purpose of preventing the nut from being drawn outward or forced inward after the bolt has elevated the key to the position shown. These shoulders serve to lock the".

teeth or serrations 'u on the opposite sideof the same, the purpose of these-teeth: being that as the key f is forced outwardly on one side of the barrel the teethu on the" opposite side of the barrel are at the same time embedded in the material on that side of the barrels This construction has the advan-' tage of producing an even pressure on opposite sides of the barrel.

One of the advantages of this improved expansion'nut is that it is adapted to beused with bolts of ordinary standard gage.

One of the advantages of the enlarged bored end (1 of the barrelc is that it provides a receptacle" in which the loose material'or borings of the. hole may be collected, and

thus avoids exercisin any great care by the workman in thoroug y cleaning after the hole is bored or drilled.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

1. In an expansion-nut, a barrel internally threaded for a eater part of its length and having a slot with inclined walls intersecting the threaded ortion of the barrel midway of its length an in one side of the barrel, a tria lam-shaped keyhavingteethonthe outer surface thereof and removably inserted in said slot and engaging the'inclined walls, a threaded longitudinally-movable bolt for engaging said key and said internal] -threaded arrel, the inner end of the bolt orcing the key outward and retaining the same in its outward position.

2. In an expansion-nut, a barrel, 9. longitudinally-threaded aperture therein, a slot midway of the length of the barrel and having an inclined wall, a triangular-shaped key loosely mounted in said slot and engaging said inclined' wal'l, a threaded bolt for moving said key outward.

3. In an expansion-nut, a barrel having an internally-threaded opening therethough, a 5 longitudinal slot having two inclined walls and facing'each other in opposite directions, ,7 said slot opening into said threaded o ening,

a key substantially of a wedge shape ocated in said slot, one angle or apex of said key en- 7 gaging one inclined wall of said slot, and another angle or apex of said key engaging theother inclined wall of said slot when in normal position whereby the'key is revented from dropping into the barrel, an whereby 7 5"- the rear wallserves tolock the key to thebarrel, when extended.

4. In an ex ansion-nut, a barrel, a threaded aperture t erethrough for a greater portion of its length, a slot intersecting the threaded aperture and having two inclined. walls, a triangular wedge located in said slot and extending into the threaded aperture, two-sides of the wedge engaging said inclined walls and one edge of said Wedge having 5 teeth oppositely located from the threade part of t e barrel, and teeth on the opposite side of said barrel, the teeth on said Wedge and said barrel pointing in the same direction, andmeans engaging the threaded aperture for forcing said wedge outwardly.



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3269251 *Aug 17, 1964Aug 30, 1966James Bass HenryThreaded inserts with sliding segmental securing means
US3312138 *Mar 2, 1965Apr 4, 1967Cumming James DExpansion shell for rock bolts
US3552258 *Jul 20, 1965Jan 5, 1971Warner Clifford CBolt anchors
US4566832 *Nov 8, 1983Jan 28, 1986Hilti AktiengesellschaftSleeve-shaped expansion dowel
US4614471 *Mar 27, 1984Sep 30, 1986Hilti AktiengesellschaftExpansion anchor
US4830316 *Mar 30, 1988May 16, 1989Fischerwerke, Artur Fischer Gmbh & Co. KgMounting unit
US4902179 *Jul 8, 1987Feb 20, 1990Jtb, Inc.Drywall fastener
US5147166 *Oct 22, 1990Sep 15, 1992Jtb, Inc.Wall anchor
USRE36622 *Nov 4, 1996Mar 21, 2000Hilti AktiengesellschaftDrywall fastener
Cooperative ClassificationF16B13/04, Y10S411/922