US2631877A - Lockable slide bolt assembly for doors and the like - Google Patents

Description

March 17, 1953 swo 2,631,877

LOCKABLE SLIDE BOLT ASSEMBLY FOR DOORS AND THE LIKE Filed July 28, 1950 IN VEN TOR.

Patented Mar. 17, 1953 LOCKABLE SLIDE BOLT ASSEMBLY FOR DOORS AND THE LIKE Mark Ainsworth, Kansas City, Mo.

Application July 28, 1950, Serial No. 176,495

1 Claim. 1

This invention has to do with closure structures, such as doors, windows and the like, and more particularly to a sliding bolt locking device adapted to be mounted on said structure.

The most important object of this invention is to present a sliding bolt structure that cannot be moved from the locking position without proper manipulation of the bolt and, also, to present means to prevent sliding of the bolt by one wishing to obtain an illegal entry.

Another important object of this invention is to present a sliding bolt structure that is economical to manufacture, light in weight and easily adapted to various closures.

Other important objects of this invention reside in the novel structure thereof which will become apparent during the course of the following specification, referring to the accompanying drawing, wherein:

Figure 1 is a perspective view of a lockable slide bolt assembly for doors and the like made according to one form of my present invention.

Fig. 2 is a cross-sectional view taken on line IIII of Fig. 1.

Fig. 3 is a perspective View showing a modified form of bolt for said assembly.

Fig. 4 is a view similar to Fig. 3, another modified form of bolt.

Fig. 5 is a plan view of the assembly mounted on a door and its jamb, showing a modified form of bolt keeper.

Fig. 6 is an enlarged, perspective View of the keeper shown in Fig. 5.

Fig. 7 is a view similar to Fig. 5, showing still another form of a bolt keeper; and

Fig. 8 is a perspective view showing a portion of the keeper of Fig. 7.

The form of the invention illustrated in Figs. 1 and 2 includes a sliding bolt structure broadly designated by the numeral I and mounted on a door I2 and a door jamb I4 respectively. A U- shaped frame I6 is rigidly affixed to the door I2 by a pair of wood screws I8 and 20. The legs 22 and 24 of the frame I6 have a pair of circular openings 26 and 28 respectively, adapted to slidably and rotatably receive an elongated-bolt 30 that is semi-circular in cross-section. The leg 24 has a slot 32 communicating with the opening 28 and with a second circular opening 34 adapted to receive the yoke or looped part of a padlock or like device (not shown) to prevent removal of the bolt 30, as will hereinafter be more fully explained. The leg 22 of frame I6 is slightly shorter than the leg 24 and both are arcuate on their free showing ends 36 and 38 respectively, as is clearly shown 2 in Figs. 1 to 4 inclusive, to prevent the snagging of clothing or the like and, also, to offer a pleasing appearance.

The bolt 30 has a pair of rectangular, spacedapart integral stop members 40 and 42 extending radially from one longitudinal edge thereof, the former carrying a bolt Or other removable stop element 44.

In one end 43 of the bolt 30 adjacent the leg 25, is an opening 50, adapted, as is the opening 34, to receive the looped portion of a padlock to prevent reciprocation of the bolt 30 and a handle member 52, similar in all respects to the stops 46] and 42, is disposed at the opposite end of the bolt 30.

End 48 of bolt 30 passes through an opening 54 in an elongated, rectangular keeper 56 mounted in a groove in the face of jamb I4 adjoining the door and having an arcuate free end 58 similar to the ends 36 and 38 of the frame legs 22 and 24 respectively. Communicating with the opening 54 is a notch 50 identical to a notch 62 of the leg 22. The notch 60 of the keeper 56 is located approximately degrees from the notch 62 of the leg 22 and the keeper 56 is releasably secured to the door jamb I4 by a number of wood screws 64 as is clearly shown in Fig. 1. p

The operation of the slide bolt is simple and very efiective. The bolt 30 is first moved into the frame I6 through the openings 28 and 26, with the stops 40 and 42 passing through slot 32 and opening 34, and the bolt 44 is then aflixed to the stop 40 to prevent complete withdrawal of the bolt 30 from the frame I6. To look the door I2, the bolt so is moved through the opening 54 of the keeper 56 and then turned in either a clockwise or counterclock-wise direction. In doing so, the stops 40 and 42 are moved out of register with the slot 32 and the openings 34. I

As Fig. 1 clearly shows, the structure above described is in a locked position. The openings 34 or 50 are adapted to receive the looped portion of a padlock to prevent withdrawal of the bolt from the locked or unlocked position and, therefore, makes the sliding bolt structure pickproof or burglar-proof.

Fig. 3 shows a modified form of sliding and ro- .tatable bolt I00, but the frame I6 is identical to the one shown in Figs. 1 and 2, and therefore, need not be described again. The bolt I00 has three stops and a handle I02, I04, I05 and I08, respectively, integral therewith, substantially the same as previously described with the exception that the stops I02 and I04 are substantially onehalf as large as the stop I06, and the handle I08.

3 The stop I04 is bent approximately at a right angle to radial stops I02 and H16 and the bolt I has an opening 1 I0 formed in one end thereof similar to the opening 50 of the bolt 30.

The operation of this modified bolt structure is similar to that first described with one exception. To completely withdraw the bolt 19 from the frame It, an additional turn of the bolt I00 must be made in order for the stop I 64 to pass through the slot 32 and the opening 34 of the frame I6. Removal and replacement of the bolt 44, which has been eliminated in the form of Fig. 3, becomes unneoessary, Fig, 3 shows the bolt H16 in the unlocked position.

Fig. 4 shows a still further modified form of a sliding and rotatable bolt 2&0 with the identical frame 16 illustrated in Figs. 1 to 3 inclusive. The bolt 266 has three spaced-apart stops and a handle 232, 264, 296 and 258 respectively, the stops 264 and 206 being spaced a considerable distance apart, as is clearly illustrated. The stop 282 is adjacent an opening 2 i near one endof the bolt 26B, and the stop 264 is spaced substantially midway between the legs 22 and 24 of the frame l6 when the bolt 2.68 is in the unlocked position, as shown in Fig. and when the stop 266 is on the outermost side of the leg E i.

The operation or" the bolt 26! is similar .tothose previously described with the additional factor that the stop 262 passes through the n tches 66 and 62 of the keeper 56 and the leg 22 respectively, which again requires an additional manipulation of the bolt 2% to obtain complete withdrawal and unlocking of a door or window E2 .to which it is attached, as the case may be. it is noted that the stops 266 and ZBBembrace the leg 24 and the stop 2 2 is disposed on the outermost face of keeper 56 when the bolt 289 is locked, cooperating in preventing accidental unlocking. To remove thebolt 286 from the frame [6, the belt 266 must be rotated to align the stop 262 with the slot -68 after the bolt 2% is shifted to move the stop 266 through the opening 3% and the slot 32.

- forward of a slight bend 363 are a pair of .bolt- Either of the bolts 36 or receiving openings 3i 6. 163 will slide into either of the openings tlfiand may be locked therewith, if so desired. The bracket-304 has a pair of openings 312 adapted to receive screws as shown in Fig. 5, to attach the keeper-'35s to the closure jamb i i.

In operation, thekeeper we may he utilizedin substantially the same way as the keeper 56 and in connection therewith if desired. The keeper 306 is designed to hold the closure 12 ajar in order to permit circulation of air throughout a room and when the keeper-3E5} is not being used, it can be raised or lowered out of position, there being enough clearance between the leg 3% and the heads of the screws 3 Hi to permit such swinging movement.

Figs. 7 and 8 illustrate a third form of keeper 460 which is adapted to be affixed to jamb M. The frame It and any one of the sliding and rotatable bolts 36, IE0 or 200 may be used with keeper 406. The keeper 460 consists of a U- shaped member 402 which may be attached to the lamb M by any suitable means, such as by wood screws 406.

Member 402 has a pair of openings not shown, adapted to receive an eye bolt 463 on which is threaded a nut 416, as shown in Fig. 7. Secured to the eye bolt 408 is a chain M2 that in turn joins with an elongated member 4M through an opening N6 of the latter. Member AM of keeper 406' is complemental with and of a lesser diameter than that of the three previously-described bolts. Depending from one link 418 of chain M2 is a hook 426.

In operation, the member M4 is slid through the bolt of the frame it and the corresponding frameopenings and is heldin'place thereby. The hook 426 can be placed in any one of the links of the chain M2 to shorten or lengthen the latter, with .the result that the deer 12 may be opened a greater or lesser amount. Also, the door {2 may be completely closed without removing the member M4 from the bolt and the frame.

Having thus described the invention, whatis claimed as new and desired to be secured by Letters Patent is:

In latch structure, a U-shaped frame having a pair of spaced, parallel legs, each having anopening therein, onset the legs being provided with a slot registering with the opening thereof janelongated bolt rotatably mounted in the opening for reciprocable movement on its longitudinal axis; and a pluralityof laterally extending, co-planar, stop members on the bolt, one of the stop members being adjacent one end of the bolt, presenting a handle, a second and a third stop member beingdisposed betweenthe handle and the opposite end of the bolt, and between the said legs when the bolt is at one end of its path of travel, said stop members all being movable through the slot upon rotation of thebolt relativeto the frame to align the stops with the slot, said stop members being spaced for receiving the one leg therebetween when the bolt is rotated to move the stop members 'out of alignment with said slot, said secondstop member being disposedbetween said one stop member and the third stop member, and

the third stop member being provide'diwith' releasable means for holding the same against movement through theslot.

MARK AINSWORTH.

REFERENCES CITED The following references are of record in the .file of this patent:

UNITED STATES PATENTS

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