US973559A - Expansion-bolt. - Google Patents

Expansion-bolt. Download PDF

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Publication number
US973559A
US973559A US54158010A US1910541580A US973559A US 973559 A US973559 A US 973559A US 54158010 A US54158010 A US 54158010A US 1910541580 A US1910541580 A US 1910541580A US 973559 A US973559 A US 973559A
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Prior art keywords
shield
projections
aperture
expansion
bolt
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Expired - Lifetime
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US54158010A
Inventor
Henry W Pleister
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HENRY B NEWHALL
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HENRY B NEWHALL
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Priority to US54158010A priority Critical patent/US973559A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/12—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like
    • F16B13/124—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like fastened by inserting a threaded element, e.g. screw or bolt

Definitions

  • Figure 1 vis a vertical section through a i supportand theshie d, the bolt being shown in side elevation
  • Fig. 2 is an end view of the shield shown in F 1g. 1
  • F 1g- 3 IS a vertical sectional ⁇ IQW through a support showmgm slightly modified forni of shield in side elevation
  • Fig. 4 is a side elevation of a 1110(llfi'ed form of shield
  • Fig. 5 is a side elevation of another modified form of shield
  • 1 is any suitable support of brick, masonry, cement or any other support, in which an aperture 2, of a given diameter, has hceumade for I '35 the insertion of'the shield 3 of my expansion a 'holt.
  • I provide a plurality of projections 11, Hand 12, 12 located in a certain manner on the exterior sill-face of the shield and at. an angle to each other.
  • the projections 11, 11 are preferably arranged on the forward end of the shield 3 and are-formed of sue-ha height that that end of the shield is substantially equal to, or is slightly less, than the diameter of the aperture 2 within which the shield is to be mounted.
  • the other projections 12, 12 are preferably mounted at the rear or opposite end of the shield so that they are on the end which is nearest to the face 13 of the support 1 and consequently are on that portion of the shield which is the last to be inserted in the aperture 2.
  • the diameter of the shield plus the height of the projections 12 is alittle greater than the diameter of the shield plus the projections 11.
  • portion of the shield provided with the pro ections 12, 12 has a diameter. slightly in excess of the aperture 2 within which the shield is to be seated. This permits that portion of the shield provided with the projections 11, 11 to be readily inserted withinthe aperture 2 of the' support; 1 until the projections 12, 12 contact with the interior surface of the aperture 2.
  • projections 12 in the preferred form are of substantially a uniform height which for purposes of illustration is shown exaggerated in Fig. 1; they are alsoexaggerat'ed for the same purpose in the other figures of the drawing.
  • the two members to expand and firmly grip the surface of the aperture 2 in the support 1.
  • I preferably arrange the transverse projections 11, 11 at substantially right angles to the projections 12, 12. It will be readily seen that by such an arrangement the projections 12, 12 first become operative to hold the two parts 4 and 5 together within the aperture 2, ,but after the shield is expanded, in any suitable manner, the-end of the shield upon which the transverse projections 11, 11 ⁇ are mounted will be expanded to a greater extent than the front portionof the shield and consequently the main holding or friction of the shield within the aperture 2 will then be by means of the transverse projections 11, 11 which are arranged at right angles to the line of force which might be applied to the shield to withdraw it from the support; and, further, that the friction and the expanding force of these projections 11, 11 will be at a point removed from the face 13 of the support 1 and therefore less likely to crumble or mar it.
  • lVhile I preferably arrange the projections 11 and 12 in the term of ribs, they however may be varied withoutdeparting from the scope of my invention.
  • the ribs may be mutilated or broken such as shown in Fig. 5.
  • Such-an arrangcinent is shown in Fig. 3 wherein the longitudinal ribs 14, 14 are inclined. making the greatest diameter of the shield plus the projections at the end 15 which would be the last to be inserted within the aperture 2 of the support 1.
  • the transverse projections are arranged only at the inner end of the shield and while I have shown them extending back on the shield substantially half its length, this is a mere matter of degree for my invention is not to besenttedto this particular arrangement of the projections.
  • I may arrange the transverse projections at either end of the shield and place the longitudinal projections in the center, such an arrangement being shown in F ig.'6.
  • thou b not necessarily, form the exterior of the siield 3 of substantially a uniform diameter thereby forming a cylinder of substantially a uniform diameter, and vary the height, shape and contour of the transverse and longitudinal projections 11, 12,14 and 16.
  • the longitudinal projections 12, 12' or 14, 14 serve to prevent relative movement of the parts 4 and 5 and also prevent the rotation or movement of the shield within the aperture2, permitting the expanding member to be brought home within the shield 3 with a minimum amount of labor and without any lost motion.
  • the trans verse projections 11, 11 will readily slip within the aperture 2. It will take substantially little or no expanding force to cause them to engagewit-h the surface of the apeiture 2, and comparatively little expanding force to cause them to bite within the support whereby a. bolt anchor is obtainedconnection with several illustrative embodiments thereof, to the details of which I do not desire to'be limited, what is claimed as new and what it is desired-to secure by LettersPatent-is set forth in the appended claim.
  • a shield for expansion bolts comprising a. plurality of expansion members forming a cylinder having its exterior surface of substantially a uniform diameter throughout and provided with a tapered interiorsurface, transverse projections on the forward exterior surface of the expansion members and longitudinal projections upon the rear exterior surface of the expansion members, making that end of the expansion members of a diameter slightly greater than the end on which the transverse projections are

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining And Supports For Tunnels (AREA)

Description

H. W. PLEISTEK. EXPANSION BOLT.
APPLICATION FILED P235 1910.
Patented 001125, 1910.
17 nigiugfiim,
- 77: 1 4 I r WITNESSES}, ms my W. m W49 n ATTORNEY HENRY W. PLEISTER,
i .To all whomit may concem:
'45 bolt 8.
' 1 UNITED STATES rarest OFFICE.
OF WESTIIELD, NEW JERSEY, ASSIGNOR TO HENRY B. NEW- HALL, OF PLAINFIELD. NEW JERSEY.
' EXPANSION-BOLT.
Be it known that I, Hnxnr \V. Pnars'rnn, a citizen of the United States, and a resident of Weslficl'd; in the county of Union and State of New Jersey, have invented certazn new and useful Improvements in Expansionllolts, of \vlllCll the following is a specification. taken in connection with the accompapying drawings, which form a part of the 1() same.
' shown several illustrative embodiments of. my invention m which the same reference numerals refer to similar parts in the several figures. v s
Figure 1 vis a vertical section through a i supportand theshie d, the bolt being shown in side elevation; Fig. 2 is an end view of the shield shown in F 1g. 1; F 1g- 3 IS a vertical sectional \IQW through a support showmgm slightly modified forni of shield in side elevation; Fig. 4 is a side elevation of a 1110(llfi'ed form of shield; Fig. 5 is a side elevation of another modified form of shield; and Fig.
(l is a side elevation of another modified form of shield.
In the illustrative embodiments of this invention shown in the drawing, 1 is any suitable support of brick, masonry, cement or any other support, in which an aperture 2, of a given diameter, has hceumade for I '35 the insertion of'the shield 3 of my expansion a 'holt.
l have shown this shield made of two parts 4 and 5, (Fu 2) though this number may l e varied wit tout departing from my i invention.
Simply for purposes of illustration, but with no idea; however. of limiting my invcntimx, I have shdwirthe shield 3 provided with interior screw threads 6 to coiiperate with the male screw threads 7 upon the lag It is to be distinctly understood, however, that the interior of the shield 3 may be plain or may be provided with machine screw threads or any other form, those shown being. as noted. simply for purposes of illustration.
5.5 diameter from onoendto the other. On
Specification of Letters Patent.
Application filed February 2, 1910.. Serial No. 541,580.
this exterior surface ofthe shield, and upon each section 4 and 5, I provide a plurality of projections 11, Hand 12, 12 located in a certain manner on the exterior sill-face of the shield and at. an angle to each other. [The projections 11, 11 are preferably arranged on the forward end of the shield 3 and are-formed of sue-ha height that that end of the shield is substantially equal to, or is slightly less, than the diameter of the aperture 2 within which the shield is to be mounted. The other projections 12, 12 are preferably mounted at the rear or opposite end of the shield so that they are on the end which is nearest to the face 13 of the support 1 and consequently are on that portion of the shield which is the last to be inserted in the aperture 2. The diameter of the shield plus the height of the projections 12 is alittle greater than the diameter of the shield plus the projections 11.
Preferably that portion of the shield provided with the pro ections 12, 12 has a diameter. slightly in excess of the aperture 2 within which the shield is to be seated. This permits that portion of the shield provided with the projections 11, 11 to be readily inserted withinthe aperture 2 of the' support; 1 until the projections 12, 12 contact with the interior surface of the aperture 2. These projections 12 in the preferred form are of substantially a uniform height which for purposes of illustration is shown exaggerated in Fig. 1; they are alsoexaggerat'ed for the same purpose in the other figures of the drawing.
7 As shown in Fig. 1 the two portions 4 and 5 of the shield are brought together and substantially half of the shield can be readil inserted within the'aperture 2 until the longitndinal projections 12, 12 contact with the interior surface of the aperture. Pressure, or a soft blow. u on the two lnemlnas 4 and '5 of the shield Wlll then cause the longitudinal projections 12, 12 to bite into the surface of the aperture 2 and form shallow longitudinal furrows within which the projections 12., 12 will be seated. This serves to hold the two portions 4 and 5 of the shield 3 together and in positito permit them to readily coiiperate with the expanding, means which may be a lag screw such as shown in Fig. 1, a machincbolt. or any other suitable expanding member. hi-1h upon inserting within the shi ld 23 wilt (when :1
the two members to expand and firmly grip the surface of the aperture 2 in the support 1. I preferably arrange the transverse projections 11, 11 at substantially right angles to the projections 12, 12. It will be readily seen that by such an arrangement the projections 12, 12 first become operative to hold the two parts 4 and 5 together within the aperture 2, ,but after the shield is expanded, in any suitable manner, the-end of the shield upon which the transverse projections 11, 11 \are mounted will be expanded to a greater extent than the front portionof the shield and consequently the main holding or friction of the shield within the aperture 2 will then be by means of the transverse projections 11, 11 which are arranged at right angles to the line of force which might be applied to the shield to withdraw it from the support; and, further, that the friction and the expanding force of these projections 11, 11 will be at a point removed from the face 13 of the support 1 and therefore less likely to crumble or mar it.
lVhile I preferably arrange the projections 11 and 12 in the term of ribs, they however may be varied withoutdeparting from the scope of my invention. For instance the ribs may be mutilated or broken such as shown in Fig. 5.
In some instances I arrange the longitudinal ribs inclined, making that end of the shield upon which they are mounted substantiallva frustu n of a cone. Such-an arrangcinent is shown in Fig. 3 wherein the longitudinal ribs 14, 14 are inclined. making the greatest diameter of the shield plus the projections at the end 15 which would be the last to be inserted within the aperture 2 of the support 1. In some cases I may form the longitudinal project-ions tapering from the center 16 to each of its ends 17, 17 (Fig. 4) in which case the maximum friction or bite of the longitudinal ribs will be at the point 16.
Preferably the transverse projections are arranged only at the inner end of the shield and while I have shown them extending back on the shield substantially half its length, this is a mere matter of degree for my invention is not to be liniitedto this particular arrangement of the projections. In some cases I may arrange the transverse projections at either end of the shield and place the longitudinal projections in the center, such an arrangement being shown in F ig.'6. In all cases, however, 1 preferably, thou b not necessarily, form the exterior of the siield 3 of substantially a uniform diameter thereby forming a cylinder of substantially a uniform diameter, and vary the height, shape and contour of the transverse and longitudinal projections 11, 12,14 and 16.
When an expanding member provided with screw threads is used to expand 'th different members 4 and 5 of the shield, the longitudinal projections 12, 12' or 14, 14 serve to prevent relative movement of the parts 4 and 5 and also prevent the rotation or movement of the shield within the aperture2, permitting the expanding member to be brought home within the shield 3 with a minimum amount of labor and without any lost motion. By arranging the cylinder ofa substantially uniform diameter the trans verse projections 11, 11 will readily slip within the aperture 2. It will take substantially little or no expanding force to cause them to engagewit-h the surface of the apeiture 2, and comparatively little expanding force to cause them to bite within the support whereby a. bolt anchor is obtainedconnection with several illustrative embodiments thereof, to the details of which I do not desire to'be limited, what is claimed as new and what it is desired-to secure by LettersPatent-is set forth in the appended claim.
I claim a A shield for expansion bolts comprising a. plurality of expansion members forming a cylinder having its exterior surface of substantially a uniform diameter throughout and provided with a tapered interiorsurface, transverse projections on the forward exterior surface of the expansion members and longitudinal projections upon the rear exterior surface of the expansion members, making that end of the expansion members of a diameter slightly greater than the end on which the transverse projections are
US54158010A 1910-02-02 1910-02-02 Expansion-bolt. Expired - Lifetime US973559A (en)

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