US3752518A

US3752518A - Door bolt

Info

Publication number: US3752518A
Application number: US00182701A
Authority: US
Inventors: F Cannell
Original assignee: Individual
Current assignee: Individual
Priority date: 1971-09-22
Filing date: 1971-09-22
Publication date: 1973-08-14
Anticipated expiration: 1990-08-14

Abstract

A door bolt for attachment to the inner side of a door to be secured thereby includes a tubular body member having a pair of bars positioned therein for axial movement thereof. Mounting brackets secure the tubular body member to the door and the bars are moveable out of the ends of the tubular member into openings formed in the door casing. Openings formed in the center section of the tubular body member receive the hasp of a padlock between the inner opposed ends of the bars to hold the same in spaced relation with the outer ends engaging the openings in the door casing. A padlock body is applied to the hasp. Openings in the bars inwardly of the ends thereof enable the padlock hasp to be positioned there through when the bars are in innermost engaging position and be held in such position by said hasp and padlock body.

Description

United States Patent Carmel] Aug. 14, 1973 DOOR BOLT Primary Examiner-Richard E. Moore [76] Inventor: Fred J. Cannell, 2818 Idlewood Attorney-Webster Harpman Ave., Youngstown, Ohio 44511 [22] Filed: Sept. 22, 1971 [57] ABSTRACT PP 182,701 A door bolt for attachment to the inner side of a door to be secured thereby includes a tubular body member [52 us. CI. 292/42, 292/259 having a P bars Positioned therein for axial move- [51] Int. Cl. E05c 9/04 thereof Mounting brackets secure the tubular [58] Field of Search 292/32; 42, 148, member F and the bars are "mveable 70/64 out of the endx; of the tubular member into openings J; formed in the door casing. Openings formed in the cen- 5 References Cited ter section of the tubular body member receive the hasp of a padlock between the inner opposed ends of UNITED STATES PATENTS I the bars to hold the same in spaced relation with the 3; 332 22; 2 outer ends engaging the openings in the door casing.'A 3 7/1924 Spurfier "292/42 x padlock body is applied to the hasp. Openings in the l3479 10/1914 Phipps 292/148 bars inwardly of the ends thereof enable the padlock hasp to be positioned there through when the bars are FOREIGN PATENTS 0R APPLICATIONS in innermost engaging position and be held in such po- 966,l57 3/1950 France 292/42 sition by said hasp and padlock body. 853,639 12/1939 France 292/148 3 (Claims, 3 Drawing Figures PATENIEM: 14 ms INVENTOR. FRED J. CANNELL I 2 m o ATTORNEY v 3 sail; a in.-

DOOR BOLT BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to door bolts of the type normally employed to hold a door in closed position in a door opening.

2. Description of the Prior Art Prior structures of this type have comprised bars in interconnecting means for moving the same simultaneously as seen in Pats. .Nos. 932,383, 2,066,705 and 2,167,875.

This invention provides a positive means of spacing the inner ends of the bars with respect to one another in the provision of the hasp of the padlock acting as a spacing device locked in position by the padlock body.

SUMMARY OF THE INVENTION A door bolt for mounting on the inner surface of a door in a doorway arranged to direct a pair of bars outwardly into openings in the door casing and including a tubular body member slideably receiving the pair of bars and mounting brackets for securing the tubular member to the door. Openings in the center section of the tubular member corresponding in spaciang with the width of the hasp of a padlock are provided so that a hasp of a padlock positioned there through prevents the bars from being moved toward one another and thus insures the retention in the openings in the door casing. Openings are formed in the bars inwardly of their inner ends and spaced to receive the hasp of the padlock when the bars are in end to end engagement with one another and out of registry with the openings in the door casing whereby the hasp of the padlock and the padlock body holds the bars in unlock-ed position.

DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view with parts broken away of a door in a door casing with the door bolt installed thereon.

FIG. 2 is an enlarged cross-sectional detail of the device seen in FIG. 1.

FIG. 3 is an enlarged vertical section on line 3--3 of FIG. 1.

DESCRIPTION or THE PREFERRED EMBODIMENT In its simplest form the door bolt comprises a tubular body member opened at its opposite ends and mounted horizontally on the inner surface of a door 11 by means of a pair of mounting brackets 12 which incorporate spacers 13 so as to position the tubular body member 10 outwardly with respect to the inner surface of the door 11. The general arrangement is best illustrates in FIG. 1 of the drawings and the spacers 13 may be seen in the enlarged detail of FIG. 3 of the drawings. The mounting brackets 12 are secured to the door by bolts 14 with nuts 15 positioned on the inner side of the door and on the mounting brackets 12.

A pair of bars 16 are slideably positioned in the tubular body member 10 and their total combined length is substantially the same as the over-all length of the tubular body member 10.

By referring to FIG. I of the drawings it will be seen that the door 1 l is positioned in a door opening defined by a frame 17 and that there are openings 18 in the frame 17 in axial alignment with the bars 16. It will occur to those skilled in the art that the openings l8 may extend into the wall itself in which the doorway is positioned. In FIG. 1 of the drawings the bars 16 are shown extending outwardly, oppositely of the tubular body member 10 and into the openings 18 in the door casing 17. In such position they will prevent the door 11 from being opened.

In order that the bars 16 may be retained in such locked or bolted position a padlock hasp 19 is positioned through vertically aligned openings 20 in the tubular body member 10 in the central area thereof and which openings 20 are spaced with respect to one another a distance the same as the spaced vertical legs of the hasp l9 and which spacing falls between the inner ends of the bars 19 when they are in outermost position as seen in FIG. 2 of the drawings in solid lines. In such position as illustrated in FIG. 2 of the drawings the outer ends of the bars 16 are engaged in the openings 18 in the door casing as hereinbefore described.

A padlock body 21 is applied to the hasp l9 and the locking arrangement thus secured.

The tubular body member 10 is also provided with a pair of slots through which pins 23 engaged in the bars 16 extend so that the same can be moved thereby. In order to open the door 1 l with respect to the doorway defined by the door casing 17, the padlock body 21 must be unlocked, the hasp l9 removed therefrom and upwardly through the openings 20 in the tubular body member 10 whereupon the bars 16 may be moved toward one another as seen in broken lines in FIG. 2.

By referring to FIG. 2 of the drawings it will be seen that each of the bars 16 have a vertical opening 24 formed therein inwardly from the inner ends thereof and spaced so that they will align vertically with the openings 20 in the tubular body member 10 when the bars 16 are in end to end engagement as seen in the broken line illustration in FIG. 2 of the drawings. In such position the hasp 19 of the padlock will register with the vertical openings 24 and thus hold the bars 16 in innermost position within the tubular body member 10 and in unlocked relation to the openings 18 in the door casing 17.

Those skilled in the art will observe that the spacing of the tubular body member 10 with respect to the surface of the door 11 permits the usual padlock body 21 to engage upon hasp l9 and it will be further seen that the hasp 19 is preferrably modified to have a substantially horizontal upper portion connecting the parallel arms thereof so that it will lie closely with respect to the upper surface of the tubular body member 10 and thus prevent the application of a pry bar thereto.

The above described structure provides a relatively inexpensive, highly efficient door bolt which may be simply and easily attached to a door in a doorway, as for instance, in a store building or other commercial structure and wherein the door is bolted on the inside in such manner as to prevent it from being removed by force. It may also be applied to the exterior surface of a door by merely reversing the bolts 14 and positioning the nuts 15 on the inside of the door; the structure being such that it will resist efforts to pry it away from the door or the door casing in which the ends of the bars 16 are engaged when the device is in locked position.

Although but one embodiment of the present invention has been illustrated and described, it will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the spirit of the invention.

1 claim:

1. A door bolt for application to a door in a doorway defined by a casing and comprising a tubular body member of substantially the same length as the width of the door, means for mounting the tubular body member on the door with the ends adjacent to the casing, a pair of bars slideably disposed in the tubular body member and arranged for movement into and out of openings in the door casing, a padlock including a hasp and a removable lock body; said hasp of said padlock registering with vertical openings in said tubular body member centrally thereof and between the inner ends of said bars when the same are engaged in said openings, said hasp being of a size and so positioned in said openings in said tubular body to prevent retraction of said bars.

2. The door bolt set forth in claim 1 and wherein openings are formed in the bars inwardly of their ends and spaced with respect thereto for registry with said openings in the said body member and said hasp when said bars are in end to end engagement within said tubular body member.

3. The door bolt set forth in claim 1 and wherein the hasp of the padlock has spaced parallel arms and an innerconnecting member formed substantially right angle thereto so as to be closely spaced with respect to said tubular body member.

* 1 i i I