US1596292A

US1596292A - Filing-post lock

Info

Publication number: US1596292A
Application number: US68090A
Authority: US
Inventors: Charles T Nankervis
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-11-10
Filing date: 1925-11-10
Publication date: 1926-08-17
Anticipated expiration: 1943-08-17

Description

Aug. 17, 1926. igs azgz C. T. NANKERVIS FILING POST LOCK Filed Nov. 10. 1925 51 F612: a a.

spacing centers may Patented Aug. 17, 1926.

UNITED STATES PATENT OFFICE.

CHARLES T. NANKERVIS, OF INDIANAPOLIS, INDIANA.

FiLING-ros'r. LOCK.

Application filed November Other purposes of the invention are thef providing of such a structure that may be easily bound and incorporated in the filing covers; thatpermits the, quick aligning of postholeswhere the posts areslightly misplaced; and that may be supplied to the trade knocked down such that the post be determined and fixed upon assembly in the individual binderies. v I accomplish these and such minor objects as may be apparent in the following description by the means as illustrated in the accompanying drawing, in whicha Fig. 1 is a perspective view of a looseleaf filing book with a fragment of the cover removed to disclose the locking tube; Fig. 2, an enlarged side elevation of the base and locking tubes; Fig. 3, a fragmentary top plan view of the locking tube; Fig. 4, an enlarged vertical section taken on the line 44 in Fig. 3; and Fig. 5,a-similar vertical section as in Fig. 4 but with a modified form of locking bar. r

Like characters of reference indicate like parts throughout the several views.

As a foundation for my structure, I employ a length of hollow tubing as a support for the filing posts 11, rigidly fixed thereto, such that the tube 10 may be incorporated within the filing base 12 in the usual and well known manner to permit the posts 11 to project upwardly to receive the filing sheets 13. V

The locking mechanism proper is carried within the tube 14 which is adapted to be incorporated within the file cover 15 as indicated in Fig. 1, such that the posts 11 may pass through the tube 14, diametrically, to permit the cover 15 to raise or lower on the sheets 13 as they may be increased or decreased.

I insert within the tube 14, the two lockbars 16 spaced apart by the flexible link 17,

10, 1925. Serial No. 68,090.

the link 17 being pivotally secured to near the end of each, bar 16 by the rivets 18. This I link 17 is preferably made of thin spring steel and in its normal position is straight without bends. V

A screw nut 19 is centrally fixed to the link 17, and the thumb screw 20 is passed slidingly through the top wall of the tube 14 and screw-threadedly through the link 17 and the nut 19, to bring the shoulder 21 of the screw to bear against the top side of the lower wall of the tube '14. The screw has a reduced end portion 22 to. extend through the lower wall of the tube 14 and is riveted I over on the outer, under side of the tube, as indicated in Figs. 2, 4, and 5, so that the screw 20 may be freely turned, but cannot be withdrawn from the tube 14. In shipment, this screw 20 may be left out, to be assembled when the file is tobe made up.

As the screw 20 is properly turned,-the nut 19, being fixed to the link 17 and so pre vented from turning, will travel upwardly and the fiexible link 17 will also be carried upwardly to shorten its effective length, with the result that the lock-bars 16 will be drawn toward each other asindicated by the position shown in Figs. 2 and 4. The travel of the bars 16 is limited, however, since each bar 16 is drilled with a hole to match normally with the holes through the tube 14 throughiwhichthe posts 11 pass, and the bars 16, being provided with a very small clearance, usually not to exceed one sixty-fourth of an inch, willv contact the posts 11 Within the holes with a'pressure dependent upon the extent the link 17 is shortenedv by raising the nut 19in turning the'screw 20-a pressure sufiiciently great to make a locking grip of the bars 16 on the posts 11.

The link 17 may be threaded and the nut 19 carried independently of thelink, or in some cases be dispensed with. Also the nut 19 may be made in various widths to vary the distance from the central screw 20 to where the link 17 is flexed over the outlying shoulders of the nut 19, thereby varying the effective horizontal component of motion.

Each bar 16 is provided with a spacing lug 28 on each end, such that as the link 17 is bent upwardly to shorten it, the bars 16 can not lift upwardly by reason of the lugs 23 contacting the tube wall, and the movement of the bars 16 is thereby confined to no longitudinal movement only.

Referring to Fig. 5, I show a modified form of the lock-bar 16 wherein the lugs 23 are used on the outer ends only and omitted from the inner ends adjacent the link 17. By using this type of lock bar, the bar 16 grips the post 11 by tipping the inner end of each bar 16 upwardly so to reduce the effective diameter of the post hole in each bar 16, whereby the post 11 is very tightly gripped. It is obvious that a combination of the tilting and longitudinal moving bar action may be effected in this modified form.

To release the posts 11 from the lock-bars 16, the screw 20 is turned in the reverse direction to lower the nut 19, as indicated by the dash lines in Figs. t and 5, whereupon the bars 16 float freely about the posts 11.

As each bar 16 is pivot-ally secured to the link 17, the bar 16 may swing laterally within the limits of the tube walls to permit aligning with the post 11 that may be slight 1y out of the tube axial center line or bent, as is often the case.

Referring to Fig. 3, the holesthrough the tube 14 and bars 16 to receive the posts 11 may be drilled to fixed centers in advance, or the holes may be drilled to meet a different spacing afterwards at any time by merely drilling through the tube 14 and the bar 16 within as indicated by the dash lined holes 2%, such drilling being done without having to remove the bars :16 from the tube 14, and the cooperation of the parts is such that the bars 16 are alignedwithout further adjusting.

While I have here shown my invention in the form as now best known to me, and as it is obvious that the structure may be varied without departing from the spirit of the invention, I do not desire to be limited to the precise structure as shown, any more than may be required by the following claims.

I claim:

1. A file-cover locking membercomprising, a locking tube, lock-bars slidably carried within the tube, a link joining the lockbars, and means to deform the link whereby the said lock-bars may be drawn longitudinally toward each other.

2. In combination with filing posts, a filecover lock comprising a tube, lock-bars slidingly carried within the tube, a flexible link inter-connecting said lock-bars, a screw-nut aflixed to the under. side of the link, and a link-bending screw screw-threadedly passing through the link and the screw nut whereby the link may be deformed to pull the lock-bars toward each other.

3. In combination with filing posts, a filecover lock comprising a tube, lock-bars slidingly carried within the tube, a flexible link inter-connecting said lock-bars, a screw-nut afixed to the under side of the link, and a link-bending screw screw-threadedly passing through the link and the screw nut, said lock-bars being pivotally secured to the ends of the link, and having holes ther-ethrough normally registering with the holes through said tube to receive said posts.

4:. A file-cover lock member comprising a tube, a flexible lock-bar link, a lock-bar at tached to each end of the link and slidingly carried within the tube, a spacing lug on the inner end of each lock-bar, a spacing-lug on the outer end of each lock-bar, and a screw screw-threadedly passing through said link.

5. A file-cover lock member comprising a tube, a flexible lock-bar link, a lock-bar pivotally attached to each end of the link and slidingly carried within the tube, a spacing lug on the inner end of each lock-bar, a spacing lug on the outer end of each lockbar, and a screw screw-threadedly passing through said link.

6. A file cover lock member comprising atube, lock-bars slidingly carried within the tube, a flexible link interconnecting said lock-bars, a screw carried by the tube and passing through the link, a spacer carried on the screw under said link, and shoulders on said spacer adapted to contact the link at a distance from the screw to establish points CHARLES T. NANKERVIS.