Toggle bolt
Abstract
This record has no abstract on file.
Term
Term ended
Expired 13 October 1976, 49.9 years ago.
- Priority and filed
- Granted
- Expired
- Today
3 claims: 3 independent, 0 dependent
- 1Having thus described my invention. I ;claim:_ ;: ? 1. A toggle bolt comprising a barrel· haying a. cylindrical bore and including a plug at.its outer end, said plug, .having an;opening m uch, smaller, in. diameter., than...: said bore and arranged in spaced concentric relation;to .. the wall.,of the bore, said barrel . being proyided with: a pair of longitudinally extending slots which, extend? be-tween, the outer jand.inner ends: of .the. barrel) said-slots being generally of the same length, a toggle element permanently mounted within· the slots and movable-bodily within the slots and guided in such movement by 'said slots) a spherically curved pivot member rigidly mounted upon .the toggle eieinent adjacent to its longitudinal center and'slidably-mounted withinthe cylindrical bore of the barrel, the, spherically curved pivot member pivotally mounting the toggle element upon the inner face of said cytin^riqqj‘bore and also permitting of the longitudinal
- 22,9(
- 33 the toggle element, which in turn leads to and .blends with a smoothly curved or rounded shoulder portion 32. The rounded shoulder 32 in turn joins smoothly with the adjacent' longitudinal edge .33 of the toggle' element ife, mote from the longitudinal edge 28 thereof. The:end of the toggle element 21 remote from the reduced extension 27 is preferably smoothly curved or roundedas indicated af 34, and;: as shown in the? drawings,., the end 34 :is curved'generally reversely of the. curved end 29. for the full width of the. toggle element. The curved end 10 34 extends somewhat diagonally of the toggle element 21, to form at one side of the same a rounded corner 35. The use or operation of the toggle bolt is as follows: With the toggle element 21 assembled to the barrel 10.. id the manner shown/ the toggle element is swung to the 15 inactive position wherein it extends longitudinally , of or parallel to the barrel. In this position, the stop element 26 will engage the barrel upon opposite sides of the adjacent slot 18 to limit pivoting of the toggle element in one direction. It will be observed that when the toggle : 20 element is in the inactive position, Figure 3,. it is housed bodily within the barrel 10 in flush relation with, the barrel, so that the assembly has only the diameter of . the barrel and is entirely smooth and flush. When in the inactive position longitudinally of the barrel, the toggle 25 element 21 may be shifted longitudinally of the bore of the barrel as desired. The barrel 10, with the toggle element in .the inactive:. position, may now be inserted through an opening .36. formed in a plaster wall 37 or the like, with the head 30 11 of the banel arranged outermost for engagement with the face of the wall. The screw 14 is now inserted through the guide opening 13 and thrust forwardly until its leading end comes into camming engagement with the rounded end 29 of the extension 27. When this occurs, continued .35 forward movement of the screw 14 will immediately tUm . or pivot the toggle element 21 to the active position at . right angles to the barrel 10, as indicated in Figures 1 and 4 of the drawings. In such position, the'stop element 26 will again engage-the side wall of the barrel to pre- 40 vent further pivoting of the toggle element beyond its position at right angles to the barrel. When the toggle bolt is employed in a horizontal or nearly horizontal position, movement of the toggle element to the active position will be assisted by gravity, since the toggle element is overbalanced at its end adjacent to the extension 27, 45 However, an important feature of the present invention resides in the fact that the operation of the toggle ele- ., ment is not wholly dependent upon gravity, and where it is desired to use the toggle bolt in a vertical position, as when fastening an object to a ceiling or the.like, gravity 60 will not effect the Operation of the toggle element 21,. but,. ;: the insertion of the screw 14 alone will serve to shift the toggle element to the active position at right angles to the barrel, because of the camming engagement between : :, the forward end of the screw and the rounded portion 29 55 of the extension 27. After the toggle element has been turned by the screw . to the active position shown in Figures 1 and 4, the forward end of the screw will engage within the counterbore 25 and: be guided smoothly into the screw-threaded open- 60 ing 24. When this occurs, it is merely necessary to turn the. screw 14 with a screw,driver for threading the same through the opening 24 and subsequently drawing the toggle element 21 into clamping engagement with the inner inaccessible face of the wall 37. - 65 In the event that’ the toggle element 21 while in the inactive position, Figure 3, is initially near the head 11, rather than near the ring 20 as shown in Figure 3, the screw-14 will first shift the toggle element lengthwise of the barrel 10 a sufficient distance to'clear the inner face 70 of the wall 37, and then, the screw will epact with the -. rounded portion 29 to pivot the toggle element into its active position at right angles to the barrel 10. Addition- . ally, if ittie toggle bolt is employed in a horizontal position , as '‘shdlra in Figure' ‘3, the force *of gravity may tend to ‘ 75 2,908,196 movement of the toggle element with respect to the barrel when the toggle element is arranged transversely of said barrel, said pivot member having a radial screwthreaded opening formed therein at its center and extending transversely of the toggle element, said toggle element 5 being provided adjacent to its longitudinal center with an outwardly flaring guide recess leading into one end of the screw-threaded opening, a cam element carried by one end of the toggle element and extending to the outer adjacent edge of the toggle element and having a cam 10 face extending from said adjacent longitudinal edge of the cam element to a point adjacent to the longitudinal center of the toggle element, said cam face extending radially outwardly beyond the longitudinal center of the toggle element when the toggle element is in the 15 inner longitudinal position, a screw longitudinally movably mounted through the opening in the plug at the outer end of the barrel, said screw having an exterior diameter which is much smaller than the diameter of the bore of the barrel whereby the leading contacting end of 20 the screw is concentric with the barrel and arranged at the longitudinal center of the barrel, the arrangement being such that when the screw is shifted longitudinally within the barrel its leading end will first contact with the cam element and thereby swing the toggle element 25 upon its transverse axis to be arranged at substantially a right angle to the longitudinal axis of the barrel and the leading contacting end of the screw will be concentric with the barrel and the flaring guide recess to be guided thereby into the screw-threaded opening of the spherically 30 curved member, and means to limit the swinging movement of the toggle element with relation to the barrel. 2. A toggle bolt comprising a barrel having a cylindrical bore and including a plug at its outer end, said plug having an opening much smaller in diameter than 35 said bore and arranged in spaced concentric relation to the wall of the bore, said barrel being provided with a pair of longitudinally extending slots which extend between the outer and inner ends of the barrel, said slots being generally of the same length, a toggle element 40 permanently mounted within the slots and movable bodily within the slots and guided in such movement by said slots, a spherically curved pivot member rigidly mounted upon the toggle element adjacent to its longitudinal center and slidably mounted within the cylindrical bore of the 45 barrel, the spherically curved pivot member pivotally mounting the toggle element upon the inner face of said cylindrical bore and also permitting of the longitudinal movement of the toggle element with respect to the barrel when the toggle element is arranged transversely of said barrel, said pivot member having a radial screwthreaded opening formed therein at its center and extending transversely of the toggle element, said toggle element being provided adjacent to its longitudinal center with an outwardly flaring guide recess leading into one end of the screw-threaded opening, a cam element carried by one end of the toggle element and extending to the outer adjacent edge of the toggle element and having a cam face extending from said adjacent longitudinal edge of the cam element to a point adjacent to the longitudinal center of the toggle element, said cam face extending radially outwardly beyond the longitudinal center of the toggle element when the toggle element is in the inner longitudinal position, a screw longitudinally movably mounted through the opening in the plug at the outer end of the barrel, said screw having an exterior diameter which is much smaller than the diameter of the bore of the barrel whereby the leading contacting end of the screw is concentric with the barrel and arranged at the longitudinal center of the barrel, the arrangement being such that when the screw is shifted longitudinally within the barrel its leading end will first contact with the cam element and thereby swing the toggle element upon its transverse axis to be arranged at substantially a right angle to the longitudinal axis of the barrel and the leading contacting end of the screw will be concentric with the barrel and the flaring guide recess· to be guided thereby into the screw-threaded opening of the spherically curved member, and a stop element mounted upon the toggle element to engage the exterior of the barrel. 3. A toggle bolt comprising a barrel having a cylindrical bore and including a plug at its outer end, said plug having an opening much smaller in diameter than said bore and arranged in spaced concentric relation to the wall of the bore, said barrel being provided with a pair of longitudinally extending slots which extend between the outer and inner ends of the barrel, said slots being generally of the same length, one of said slots having inwardly converging beveled edges, a toggle element permanently mounted within the slots and movable bodily within the slots and guided in such movement by said slots, a spherically curved pivot member rigidly mounted upon the toggle element adjacent to its longitudinal center and slidably mounted within the cylindrical bore of the barrel, the spherically curved pivot member pivotally mounting the toggle element upon the inner face of said cylindrical bore and also permitting of the longitudinal movement of the toggle element with respect to the barrel when the toggle element is arranged transversely of the barrel, said pivot member having a radial screw-threaded opening formed therein at its center and extending transversely of the toggle element, said toggle element being provided adjacent to its longitudinal center with an outwardly flaring guide recess leading into one end of the screw-threaded opening, a cam element carried by one end of the toggle element and extending to the outer adjacent edge of the toggle element and having a cam face extending from said adjacent longitudinal edge of the cam element to a point adjacent to the longitudinal center of the toggle element, said cam face extending radially outwardly beyond the longitudinal center of the toggle element when the toggle element is in the inner longitudinal position, a screw longitudinally movably mounted through the opening in the plug at the outer end of the barrel, said screw having an exterior diameter which is much smaller than the diameter of the bore of the barrel whereby the leading contacting end of the screw is concentric with the barrel and arranged at the longitudinal center of the barrel, the arrangement being such that when the screw is shifted longitudinally within the barrel its leading end will first contact with the cam element and thereby swing the toggle element upon its transverse axis to be arranged at substantially a right angle to the longitudinal axis of the barrel and the leading contacting end of the screw will be concentric with the barrel and the flaring guide recess to be guided thereby into the screw-threaded opening of the spherically curved member, and means forming inwardly converging beveled faces upon the toggle element adjacent to its longitudinal edge and inwardly of such edge, said beveled faces engaging the beveled edges of said slot when the toggle element is in the inner longitudinal position and to engage the exterior of the barrel when the toggle element is in the outer transverse position. References Cited in the file of this patent UNITED STATES PATENTS 557,361 Church----------------Mar. 31,1896 1,084,284 Merrill________________Jan. 13,1914 2,609,723 Stubbs_____________Sept. 9,1952 FOREIGN PATENTS 115,373 Germany--------------Nov. 19,1900
Independent claims3
38 paragraphs in 2 sections, as filed
Oct. 13, 1959 a. a. apfelzweig 2,908,196
TOGGLE BOLT
Filed July 25, 1957
<img file="US2908196A_D0001.tif" />
<sup>BY</sup> (3ATTORNEY
United States Patent Office
2,908,196
Patented Oct. 13, 1959
2,908,196
TOGGLE BOLT
Alex A. Apfelzweig, Palm Springs, Calif.
Application July 25, 1957, Serial No. 674,209
Claims. (Cl. 85—3) i <sup>10</sup>
The present invention relates to a toggle bolt. 15 An important object of the invention is to provide a toggle bolt or fastener for use in securing various objects to lath and plaster walls and similar structures wherein the material of which they are composed is not adapted to be screw-threaded for coaction with a threaded bolt 20 or to coact frictionally with a retaining means.
A further important object of the invention is to provide a toggle bolt which can be manufactured very cheaply and economically, and which may employ as the screw-threaded member thereof an ordinary stove bolt 25 or screw of standard design, there being no necessity to employ a specially machined screw, or the like.
Another important object of the invention is to provide a toggle bolt having a construction and mode of operation enabling the device to be used in any position, 30 such as horizontal or vertical, and wherein the toggle element is not wholly dependent upon gravity for the proper operation of the bolt.
Another object is to provide a toggle bolt construction, wherein the improved toggle element has a novel coac- 35 tion with the standard screw employed for shifting the toggle element to the active position, regardless of the position of the toggle bolt assembly during use.
A still further object is to provide a toggle bolt of the above-mentioned character which is highly compact in 40 construction, very slender when the toggle element is in the inactive position, and reliable and efficient in operation.
A further object is to provide a toggle bolt for use upon walls, ceilings or other panels having a relatively wide range of thicknesses.
Other objects and advantages of the invention will be apparent during the course of the following description.
In the accompanying drawings, forming a part of this application, and in which like numerals are employed to designate like parts throughout the same,
Figure 1 is a perspective view of a toggle bolt in accordance with the invention.
Figure 2 is an exploded perspective view of the same.
Figure 3 is a central vertical longitudinal section through the toggle bolt showing one adjusted position of the same during use.
Figure 4 is a further sectional view similar to Figure 3 and showing a subsequent adjusted position of the toggle bolt in use.
Figure 5 is a transverse vertical section taken on line 5—5 of Figure 3.
Figure 6 is a similar section taken on line 6—6 of Figure 3.
Figure 7 is a similar section taken on line 7—7 of Figure 4.
Figure 8 is a fragmentary central vertical section through a slightly modified form of toggle bolt.
Figure 9 is an enlarged transverse vertical section taken on line 9—9 of Figure 8.
In the drawings, wherein for the purpose of illustration are shown preferred embodiments of the invention, attention is directed first to Figures 1 through 7, wherein the numeral 10 designates generally an elongated cylindrical barrel or sleeve of preferred length, and provided at one end with an enlarged flat annular head 11, preferably formed integral therewith. Near its end having the head 11, the barrel comprises a relatively short thick walled portion 12 having a central longitudinal opening 13 formed therethrough for the free passage of a screw 14, such as an ordinary stove bolt or the like. The screw 14 has a head 15 provided with the usual screwdriver slot 16, as shown. If preferred, the inner face· of the head 11 may be provided at diametrically opposed points thereon with integral prongs 17 to prevent turning of the barrel 10 during use.
The barrel 18 is provided in its side wall at diametrically opposed points with a paii· of longitudinal slots 18, and these slots preferably extend from points 19 near and inwardly of the head 11 through the remote end of the barrel, as shown in Figure 2. It may thus be seen that the slots 18 extend longitudinally of the barrel 10 throughout the major portion of its length. The end of the barrel 10 remote from the head 11 is partly closed by a ring 20, soldered, welded or otherwise rigidly secured therein as indicated. The ring 20, in effect, constitutes a barrier at the adjacent ends of the slots 18, as shown.
A plate-like clamp or toggle element 21 is provided, and being of a thickness to engage snugly through the slots 18 of the barrel 10 in the manner shown. The toggle element 21 is provided near its longitudinal center with a spherically curved enlargement 22, integral therewith, and projecting equidistantly beyond opposite sides of the toggle element, as shown clearly in Figure 5. The spherical enlargement 22 is adapted to be received snugly yet slidably within the smooth cylindrical bore 23 of the barrel 10, whereby the toggle element 21 is rendered freely pivotal upon the barrel in the plane of the slots 18. The toggle element 21 has a screw-threaded opening 24 formed therethrough transversely at the center of the spherical enlargement 22. This screw-threaded opening 24 is parallel to the opposite flat sides of the toggle element 21 and normal to the narrow longitudinal edges of the toggle element, as shown in the drawings. The screw-threaded opening 24 is countersunk at one end thereof as indicated at 25, to form a pilot or guide for the forward end of the screw 14.
The toggle element 21 is provided upon its longitudinal edge remote from the counter-bore 25 with an integral stop lug or element 26, which projects slightly beyond the 50 opposite flat faces or sides of the toggle element for limiting pivotal movement of the toggle element in both directions, as will be further explained. The stop element 26 is of thin or shallow construction, as shown, so as to be substantially flush with the periphery of the bar65 rel 10 when the toggle element 21 is in the longitudinal or inactive position indicated in Figure 3 of the drawings.
Toggle element 21 is constructed so as to be overbalanced at one end upon its pivotal portion 22. Such overbalanced end of the toggle element is provided with 60 an integral longitudinal extension 27 of reduced width, although being of the same thicknes as the remainder of the toggle element. The reduced extension 27 is formed adjacent to the longitudinal edge 28 of the toggle element which carries the stop element 26, Figure 3. 65 The end 29 of the extension 27 is smoothly rounded, as shown, for camming engagement with the end of the screw 14. The reduced extension 27 has a straight longitudinal edge portion 30, joined smoothly with the rounded end portion 29, and disposed substantially at 70 the longitudinal center line of the toggle element. The straight edge portion 30 leads to and blends smoothly into a reversely curved shoulder or cam portion 31 of
1,196 ' ' <sup>4</sup> partially pivot the toggle ..element toward its active position prior to the introduction of the screw 14. In this event, the forward end of the screw will merely engage the rounded edges 31 and 32 rather than the rounded part 29, for completing the pivoting of the toggle element to its active position as shown in Figure 4. The rounded end 34 of the toggle..-element will assure that there is no binding of the toggle element with the ring 20, during the action of the screw for shifting the toggle element to the active position.,.....,...., ...., -,
With reference to Figures 8 arid 9, a slight modification of the invehtiomis!shown, wherein, the longitudinal.edges of one of the slots 18 are beveled in diverging relation, Figure 9. For coaction with the slot 18 having the beveled edges, the toggle element 21 is provided, along one longitudinal edge with an elongated flared enlargement having diverging beveled edges 26' to be seated against the beveled edges of the slot 18 when the toggle element is extending longitudinally of the barrel 10. With this arrangement, the beveled, edges :26 of the toggle element 21 .constitute an integrakstop for,the toggle.ele-?. ment to limit its pivoting in both/directions, as/shown in: Figures .8 and 9. When the toggle element 21 is in the.; inactive positonshown, in Figure 8, the edges 26' engagec within, the; beveled slot 118 ? and, the, stop: enlargement .of the, toggle,element:is perfectly .flush with the outer sur-. face of the cylindrical barrel 10. When the toggle element 21 is in the active position, at right angles to the barrel 10 as shown in broken lines in Figure, 8, the integral; stop: enlargement haying the, edges 26a:alsp4iniits;theswinging.. movement of .the toggle element;,: through contact Of the stop enlargement with the barrel 10, The.: stop? enlarge?! ment extends, from a point adjacent the periphery; of .the barrel 10, Figure 8, to the end of the toggle element having: / the: cam portion 27,.<sub>;</sub>., The,.,stop enlargement does not extend along the remainder of the longitudinal edge of the element 21. ...... .... ,. .
It is desired to point put additionally, that, with the above arrangementin Figures 8 and 9, it is unnecessary to employ the separate stop element 26 shown and described in the first form ofthejinyention,. which separate,! stop element is not perfectly flush with the periphery of the barrel 10. All other parts of the toggle bolt in <sub>; </sub>Fignres 8 and 9 are identical in construction and operation with the parts previously described in connection with the first form of the invention.
In. connection with both fprrns of the invention, it is desired to,state that it. is entirely feasible .to form the various parts from metal, molded plastics material or the like, If the parts are .molded from, plastics, or the like, the ring or element 20 may be formed integral with; the barrel TO. . , ...
It is to be understood that the forms of the invention herewith shown and. described. are to be taken as..preferred embodiments of the same, and.that various; changes in the shape, size and arrangemerit of parts, may be /resorted to, without, departing;from., the. spirit of the invention or the;scope ofthe subjoined claims. .?
Contents2
1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| GB2584396A | Cited by | United Kingdom | Search report |
| US8974166B2 | Cited by | United States of America | Applicant |
| US5331531A | Cited by | United States of America | Search report |
| EP0468679A1 | Cited by | European Patent Office (EPO) | Examiner |
| EP0874168A1 | Cited by | European Patent Office (EPO) | Search report |
| US3707898A | Cited by | United States of America | Search report |
| US5876169A | Cited by | United States of America | Search report |
| US7611316B2 | Cited by | United States of America | Search report |
| US6435789B2 | Cited by | United States of America | Applicant |
| US9587661B2 | Cited by | United States of America | Applicant |
| US6884012B2 | Cited by | United States of America | Search report |
| US5236293A | Cited by | United States of America | Search report |
| US3861268A | Cited by | United States of America | Search report |
| KR102094242B1 | Cited by | Republic of Korea | Search report |
| US3127807A | Cited by | United States of America | Search report |
| US3280540A | Cited by | United States of America | Search report |
| US9826802B2 | Cited by | United States of America | Search report |
| US2009003962A1 | Cited by | United States of America | Pre-grant |
| EP3913235A1 | Cited by | European Patent Office (EPO) | Search report |
| WO9013751A1 | Cited by | World Intellectual Property Organization (WIPO) | International search |
| US8985877B1 | Cited by | United States of America | Search report |
| US8905695B2 | Cited by | United States of America | Search report |
| US8821094B2 | Cited by | United States of America | Applicant |
| US4116104A | Cited by | United States of America | Search report |
| US3211042A | Cited by | United States of America | Search report |
| US4120231A | Cited by | United States of America | Search report |
| US2006182515A1 | Cited by | United States of America | Pre-grant |
| WO2017177256A1 | Cited by | World Intellectual Property Organization (WIPO) | International search |
| EP0468679B1 | Cited by | European Patent Office (EPO) | Examiner |
| US3248994A | Cited by | United States of America | Search report |
| US2006182515A1 | Cited by | United States of America | Pre-grant |
| US9044110B2 | Cited by | United States of America | Applicant |
| US8449236B2 | Cited by | United States of America | Search report |
| DE3914507A1 | Cited by | Germany | Search report |
| US10871180B2 | Cited by | United States of America | Applicant |
| US8950992B1 | Cited by | United States of America | Search report |
| EP0183983A2 | Cited by | European Patent Office (EPO) | Search report |
| US5749687A | Cited by | United States of America | Search report |
| WO2021233736A1 | Cited by | World Intellectual Property Organization (WIPO) | International search |
| US2015272286A1 | Cited by | United States of America | Pre-grant |
| US5221169A | Cited by | United States of America | Search report |
| US5139377A | Cited by | United States of America | Search report |
| US2005053444A1 | Cited by | United States of America | Pre-grant |
| US4997327A | Cited by | United States of America | Search report |
| US3927597A | Cited by | United States of America | Search report |
| GB2584396B | Cited by | United Kingdom | Search report |
| US9394932B2 | Cited by | United States of America | Applicant |
| US2014010617A1 | Cited by | United States of America | Pre-grant |
| AU622795B2 | Cited by | Australia | Search report |
| US1084284A | Cites | United States of America | Search report |
| DE115373C | Cites | Germany | Search report |
| US2609723A | Cites | United States of America | Search report |
| US557361A | Cites | United States of America | Search report |
2 priority claims, no other members on record
Priority claims2
| Document | Office | Kind | Date |
|---|---|---|---|
| 67420957 | United States of America | A | |
| US19570674209 | – | – | – |
Numbers
- Publication, DOCDB
- 2908196
- Publication, EPODOC
- US2908196
- Application
- 674209
- Application, DOCDB
- 67420957
- Application, EPODOC
- US19570674209
Titles
- English
- Toggle bolt
Classification
- CPC, 1
- F16B13/0808
- IPC, 1
- F16B13 08