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M. H. JACKSON
BOOK LOCK Fixed Oct. 21, 1927
, OF CHICA&O,
Application rfited ' October 21, 1927. :Serial .No.:227;6$8.
This invention relates:to book locks,and:ihas
among its objects the,provision''of a simple
locking- device •tha"t''jnay:be readily applied to
the' current forins'of books, particularly loose
5 leaf books, so .as. to prevent unauthorized
. opemn;g'0f the saine.' •'',..• .;••..."
Tliore are at presrat ^available books,-such as private ledgers and the -like, in which the book covers are provided .at their,edges with 10 a •built-in locking 'device ..••permitting the owner of the -book ;to hold the same locked, and ^preventing-others-from having iaccess to the ,contents:-thereof. ... •;•'••'
Very often it is desired to lock 'a book, the is covers of Avhich .-have -not a -built-in locking device. -By means of the ^device-tff the present invention any :of -the'Ordinary'books may be -transformed into a locked'.book 'by the .application of -a -very -simple locking';strap :ar2<> ranged to.be anchored between'the "book covers/and a lockingiclainp ;arra;iigeelito":embrace and hold-together-the'Opart hedges of the !,covers, the clamp having-.a suitable locking .connection with the .projecting .portion -of -the 25 strap.' • • '',..;• .;. ;'..'• ; '••"..
The invention .-will- be best understood /from the following description1-of an exemplification'thereof, .irefereace .being had .tovth.e accoiTvpanying'-drawings, .wherein,.' ' . :'!0 Fig. 1 is a perspective-view.-of-a?b0d"k',pro. .vided with a.locking-device according'to 'the invention; ••.-••.'•'..•
Fig. 2 is a transverse sectional view through Fig. 1. along ..the line II—II; , '
•'>5 .'Fig. 3 is a transwi'sc.sectionali'view through. a hook provided -with'sa...locking -device em-bo-dying a modification of the invention;
Fig. 4 is u .perspective vie^'.io'f-a portion of a book •illiisti'atiiig' tlie-*ipp1icatie:n.<of •. a Hiip.40 plcsnenia! locking;'device for holding the eri'd edges of a book.locked; .
Fig. 5 is a fragmentary horizontal section through Fig. 4;.and, '., - .. ' ,. ... 1 Fig. 6 is a. vertical -sectional view -through 45 a locking clamp adjustable for books -of -,dif-:' fei-ent thicknesses. . - , ...' . ••..,•: •'..
In Figs. 1 and 2 there is ilin'strated-for'the.
purpose of exemplifying the invention a loose
leaf book-of familiar :fornl in 'which a package
50 1 of substantially rectangular sheets or leaves
is clamped at one side, constituting the back
8 of the.book, between two rigid covers 4 and
5. The book illustrated in the drawing is of
the loose leaf type, the leaves being held on
55 posts 6 which are suitably locked in anchor
ing brackets .7 in the Tear edges 'of 'the two covers 4;and 5.
It is often -desired to -arrange such books so as to permit locking ..of the -open, edges o!f the covers :to prevent unauthorized inspec- (j-0 tioii'O-f the-coUtents'iof therbook, Heretofore, as far as lanx-rtw'are, special locking or clampin-g devices -had to be built in or otherwise permanently embodied In the covers of'.the book:1 in order .to'permit locking thereof. Aq- 0'3 cording to the preseiit iri-ventidn,.any book<oi the type'illustrated may -he .transformed into a locked book without making iany changes in the arrangement of'the, book .and' without requiring the.-provision-of ^special clah1ping;.de- 70 vices that are .permanently connected or fastened to ;the, covers, or :other ipar.ts.of-the -book.
-As shown in .the -drawing. I 'provide to this end ia sheet-metal strap 11 -having its *ear end 12 benefit .an angle-pi' 90° so'as to ..oiverlap the'rear• edges df thei leaves,^and its front end formed into a;loop>r -staple member 13 arranged, to project in. front, of 'the edges -.of the .book leaves. A -if-sharped -locking '.clamp or yoke 15 adapted to 'fit -over ;arid -hold together .the .open .edges -of -the book -covers 4 and 5:has -a perforation-or slot 1.6ladapted to fit over the loop 'member 13 rof -the strap so as -to -permit dnsertibn ':&£ fitie 'clamp -15 iover the,:-bo0'k .e4ges with :the Staple ^member -13 85 projecting through thelslot 16 in front thereof. A,small .padlock 1.7 may then ,be -passed tlKi/ough 'the opening:of -the:lo'op member 13 so:as io look the clamp -15 in place, ;preventing i-ts;'iremo-val -from over''the'-edges'b'f the boolc. • The-clamp 15/is-preferably riiade if rom rigi d .in a.teri al, -si i eh us br ijss: or steel, ,th at wi 1:1 not -i'ea.(Jny bend" qpeh..'' The''locking iclarnp 15 is ..preferably ;SO'shaiped-as to confonn to the contour of -the '.closed 'book •prdviiding ia sj).ecial holdingigrciove'sfitting ovei-each.'cr)ver edge. • .....' " .
The: anchoring [Strap '11 may !be:-either -narrow, 'Us -shd wn'-in Figs, 'l.-amd 2,' or it ihay conform in -size: to -a full leaf or -sheet sof sthei:book ib:0 and have, perforations 'fitting' over i-lle posts 6 so as to be placed between the leaves :df the book just' as, an additional: leaf. : 'Inithe'molificatipn - of -the "invention, illustrated in,Fags. 1 and 2 the strap is of relatively narrow 105 width and is intended to be inserted over the top leaves of the book directly underneath the upper cover 4, and in order to provide a more convenient connection between the loop member 13 of the strap and the clamp 15, the no
front end of the strap is offset downwardly so as to bring out the loop approximately at the middle of the leaf package 1.
In most cases a simple downwardly bent
5 portion 12 in the rear of the strap 11 will be sufficient to hold the strap "firmly anchored at the back of the.book, but, if desired, the rear end portion may be formed so as to give any desired degree of anchorage, for in
10 stance, by providing a perforation in the strap fitting over a post 6 that holds the leaves together. Such construction is shown in Fig. 3, wherein an anchoring strap 11' has its rear end perforated to fit over the post 6
15 of the book, the front end of the strap projecting/into the slot 16 of the locking clamp : 15, like the arrangement of Figs. 1 and 2.
The locking arrangement of my invention is also adapted to be applied for locking the
20 upper or lower edge of the book. Such arrangement is shown in Figs. 4 and 5 wherein an anchoring strap 20, resembling the shape of a rectangular triangle, is anchored between the fear edges at the lower end of the
25 book and has a loop member 21 projecting in front of the lower edge of the leaf package and is arranged to fit into a locking clamp 15' similar to the'clamp 15 described above. The locking clamp may be locked in place by a
30 padlock inserted through the loop 21. Instead of a padlock locking connection between the loop members 13, any other locking connection may, of course, be used, for instance, the lock may be embodied .directly
35 in the locking clamp 15. .
The locking clamp may be also arranged to be adjustable for books of different thicknesses, as shown in Fig. 6, the clamp consisting of two parts 25, 26 adapted to fit over the
40 book edges, and telescopic or overlapping portions 27, 28 extending towards and fitting
- into each other, the overlapping portions being provided with slots 29 through which the loop member of the anchoring strap may be
45 inserted. The slots .29 in the overlapping portions of the upper and lower clamping members, 25 and 26, respectively, are arranged to register so that the loop member IB may be inserted therethrough to provide
50 different thicknesses of the clamp.
The invention is susceptible of many other modifications that will suggest themselves to those skilled in the art and it is, accordingly, desired that' the appended, claims be given a
55 broad construction commensurate with the scope of the invention within the art. I claim:
1. The combination with a book having a pack of leaves and a pair of relatively rigid
covers, of a locking device therefor compris- on ing a loose strap anchored between the covers, a loose clamp adapted to fit over and hold together the open edges of the covers, and a • locking connection between the strap and the clamp. a;;
2.: The combination with a book having a pack of leaves and a pair of relatively rigid covers clamped to one side of said pack, of a locking device therefor comprising a strap anchored between the covers at the back edges 70 of the sheets and having a portion projecting in front of the open edges of the leaves, a loose clamp adapted to fit over and Isold together the open edges of the covers, and a locking connection between the projecting portion of 7.r> the strap and said clamp.
3. The combination with a loose leaf book having a pack of loose leaves and a pair of binder covers having means for clamping said pack of leaves at the back edge thereof, so of a locking device therefor comprising a strap anchored between the covers at the back edge of said leaves, a clamp adapted to fit over and hold together the open edges of the covers, said strap having a projecting portion s~> extending in front of the open edges of the leaves, and a locking connection between .said projecting portion and said clamp.
4. The combination with a book having a pack of sheets, a locking strap bound with the on sheets, a clamp adapted to embrace free edges of said sheets, and means for locking said clamp to said locking strap.
5. The combination with a book having a pack of sheets, an anchoring strap bound with os said sheets, an extensible clamp adjustable for different thicknesses embracing said sheets at the outer edges thereof, and means for locking said clamp to said strap.
6. The combination with a book having a 100 pack of leaves and a pair of covers, of a locking device comprising a strap anchored between the covers, a clamp adapted to engage and hold together the open edges oif the covers and a locking connection between the strap I0,r> and the clamp.
7. The combination with a book having a pack of leaves and a pair of covers therefor, of a locking device comprising a strap anchored between the covers, a clamp adapted 110 to engage and hold together the open edges
of the covers, said clamp being adjustable for various thicknesses, and a locking connection between the strap and the clamp.
In testimony whereof I have hereunto sub- 115 scribed my name.
MARSHALL H. JACKSON.