US527406A

US527406A - Expansion- bolt

Info

Publication number: US527406A
Authority: US
Publication date: 1894-10-16
Anticipated expiration: 1911-10-16

Description

(No Model.) v

I. CHURCH. EXPANSION BOLT.

No. 527,406 Patented Oct. 16,1894.

29 g wmu rectangular orothor' exterior formation.

l the bolt in position.

tions on lines X X and Y Y, respectively oi spectively on the same lines of a liar-"redo fire-res Ferrari? firewall..

ISAAC (JUURGH, OF 'l( )LEDO-, ()IIIO.

ereaweaoa eorn SPECIFICATION forming part of Letters Patent I l'o. 52?,516, dated October 16, 189 4:;

- Application filed llrcembcr 1,1393. Serial No. 492,438. (Ndmodel-l beinghacl to the accompanying drawings, and

to the numerale of reference marked thereon, which form. part of this specific My invention relates to an e and has for its object, to 1 wide an t an ble shell or missing having inclined sides upon WlllO-ll an inclined out may he dra a to ere pand the samawith the base of the shell ex tending traosvereely across its diameter to serve era a contact point for the end the bolt, to cause the not to travel alongthe thread of the bolt as soon as the contact is attracted.-

A further object is to coustruot an. experieilole shellllavlug inversely inclined. nterior sides, and means for expanding the shell at all points along its length.

-A further obj out is to construct an expand ing shell with an interior inclined surface, either round, rectangular, hexagonah'or polygonal in cross section to allow closing either round, winged expanding devicee or those of The invention consistsin the parts and. com. bination of parts, hereinafter described and pointed out in the claims.

In the drawings: Figure 1 iii a side view of the expansion bolt located within the pelvic ration of an object in which itis to he secured,

parts. Fig. 2 is a longitudinal transverse eeotion of the shell and expanding devices, with In these two viewe 's, the shell is shown prior to being expandeth llig. 3 is a longitudinal trausveree .ecotloi'i ot the shell and expanding devices, showing the shell expanded. Figs. l and 5 are crose ec-- Fig. 2. Figs. 6 and 7 are cross sections remodified form of construction.

1 designates the expansible shell, compris ing two semi-ciro ular sections in exterior cross section; each section having a transverse bottom web 2, preferably formed with a right-- angled flange 3 transversely perforated to eceive a headed. rivet 4: of greater length than the thickness of the two iianges,to' ElllOlY the sections of shell to separate tothe desired or pen ion. lliaoh semicircular section is prcferahly flanged at the upper end, thereby formiog a concentric ring 5 uporith'e interior, and centrally of the circumference of each section there is a longitudinal slot 6, extending from the Web to the flange, thereby dividing the shell into four eapaasillle portions. The interior oi. the shell is inversely inclined, the outer portion inclining; from the center out warilly and. thelowor portion 8, from the cor or toward. the inner end. 'Locatcd o l 'he inner end is an inversely inelined autsl threaded. to receive the screw threaded end of a belt or stub 10, and if the scribed. the shell is inserted within the perfo-v ration formed in the object to which the bolt is to be attached with the not 111 its extreme inner position.

when upon further revolution of the bolt, the not will. travel up the inclined sides of the shell, and. separate the sections to the desired expansion. value, as it obviates the necessity-0t providing a bearing for the head of the bolt in order to draw the nutwlthiu the ehel, as it is often desirable to employ a stub bolt as shown in Fig. 8, and lirsteecure the same in place before adding an eject tobe secured thereto.

In order to provide for a double grip of the I shell withir the perforation, there is provided a3; expander 1.2,Wl2ih is located in the outer This arrangement is of great l1 radial wings; 11, to enter

slots

6, 1

The belt is screwed through the not, until the-end contacts with the Well,

end of the shell-and has an inverse inclinar tion to that of the portion 7 ofthe shell,

whereby when the expander is forced into the shell, an equal distance to the "draw of the nut, there is an equal expansion, and ec oeq uently all goal grip, along the eutiredength of the shell. Expander 1 2 is preferably formed.

shell to its 'fullextent, to allow the shell to contract to its smallest diameter, protrudes through the shell to serve as a means for forcing the expander into the shell.

The advantage of theinvention will be apparent. First, it allows of expanding the lower end without first interposing a block or object between the head and shell; second, it

allows of the use of a'nut of any desired. exterior formation; and, third, it provides for a double grip, or in other words, a grip of the shell alike at each end; and finally, it issimple in construction and inexpensive in manufacture.

What I claim is- 1. luau expansion bolt, a sectional shell having oppositely inclined inner face and a rigid transverse end web, means upon the web for securing the sections ,in assembled position, a nut in the shell, and means for movingthe nut, and expanding the shell.

2. In an expansion bolt, a shell formed of two sections, each section havinga rigid transverse Web expansibly connected together, an

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inversely inclinedv nut, and a bolt passing through the nut and contacting with the web. 3. In an expansion belt, a shell having an oppositely inclined inner face, an end Web at one end, and a concentric ring at the opposite end, a nut and an expander inthe casing the expanderbeing held from displacement by the concentric ring,and a bolt passing through said expander and screwed into the nut.

4. In an expansion bolt, a shell having an inversely inclined interior surface, a nut and an expander in the shell, the expander having a manual application, and a bolt passing through the same and screwed into the nut, by which means the nut is moved.

5. In an expansion belt, a shell having inclined interior faces, and polygonal sides expanders in the same of corresponding shape in cross section, and means for moving the expanders, and expanding the shell.

I In testimony that I claim the foregoing as 'my own I hereby affix my signature in presence of two witnesses.

ISAAC CHURCH.

lVitnesses'z, vWILLIA WEBSTER, CARROLL J WEBSTER.

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