Патент USA US2105590код для вставки
Jan. 18, 1938. M. H. ETSTEN , 2,105,590 LOCK Filed March 19, 1936 - \mzm 2 Sheets-Sheet 1 Jan.'l8, 1938. M. H. ETSTEN , 2,105,590 LOCK Filed March 19, 1936 2 Sheets-Sheet 2 J5 17 19 7/70/77-11EtJZ‘erz, gawk...’ _ M Patented Jan. 18, 1938 2,105,590 UNITED STATES PATENT OFFICE 2,105,590 LOOK Morris H. Efsten, Fitchburg, Mass, assignor to Independent Lock Company, Fitchburg, Mass, a corporation of Massachusetts Application March 19, 1936, Serial No. 69,656 3 Claims. (01. 70-57) This invention relates to a device for locking diametrically opposite points to receive the bolts doors, the covers of a book, as for example a which ?t it accurately. In Fig. 5 is shown the ledger, or to serve as a substitute for a padlock, position in which the ledger is unlocked and the etc. covers can be removed. To look the ledger, the The principal objects of the invention are to two bolts are moved toward each other so that provide a lock with one or more inserted headed the two heads !2 contact, or nearly contact, with bolts which, when pushed into the proper place, each other as shown in Fig. 4. can be simultaneously locked in place by the The cylinder l3 includes a plug I4 which is turning of the lock plug through any desired arc provided with a projecting tumbler l5 operating to prevent the bolt or bolts from being moved; to in a groove H5 in the inside of the cylinder. At 10 provide a construction in which the ledger or door one end it is connected with a longitudinal slot i1 cannot be opened except by the party who has the extending along the cylinder. The plug is pro proper key, and to provide a construction in which vided with the usual tumblers H) which are the lock can be unlocked simply by inserting the adapted to be manipulated by a key 20 as shown key and turning it a quarter turn, for example, in Fig. '7. This key, when inserted, will move thus releasing the bolt or bolts. these tumblers to withdraw them so that the plug Other objects and advantages of the invention can be turned by the key and at the same time the will appear hereinafter. ' tumbler l5 will be turned with it in the groove l6, Reference is to be had to the accompanying thus preventing the removal of the plug. The 20 drawings, in which key and plug are turned only a quarter of a Fig. l is a sectional view of the two covers of a ledger showing the locking bolts and a preferred form of the lock in position holding them locked; Fig. 2 is an end view of the look as indicated by 25 the arrow 2 in Fig. 1; Fig. 3 is an opposite end view of the look as indicated by the arrow 3 in Fig. 1; Fig. 4 is a sectional view of the the bolts in locked position; 30 lock, showing Fig. 5 is a similar view showing the bolts in unlocked position; Fig. 6 is a longitudinal central sectional view of the lock showing it vin locked position with the key removed; 35 Fig. 7 is a similar sectional view showing the unit in locked position with the key inserted so that it is ready to be unlocked by a quarter revo lution of the key; Fig. 8 is a sectional view on the line 8—8 of 40 Fig. 6; Fig. 9 is a similar View slightly at one side thereof; Fig. 10 is a, face view of the end of the lock plug; Fig. 11 is a side view of the plug holding tum 45 bler, and ' , Fig. 12 is an edge View thereof. In the form- shown two ledger covers II] are illustrated each having an opening therethrough through which extends a locking bolt I I. The 50 two locking bolt's substantially meet at the center of the ledger and each is provided on the end with a cylindrical head l2. The ledger can be locked when these two heads are pushed into contact with each other. The two bolts support from the 55 cover It a lock cylinder 13 which is perforated at revolution preferably. The plug is provided with ~ two projections 2| spaced apart which, as shown in Fig. 4, will move around opposite sides of the two heads l2 and hold the bolts ll locked to gether as shown in Fig. 4. These projections 2| can be used for looking a single bolt and head, evidently. The key at this point can be removed and the lock can be unlocked again by inserting the key and turning it back a quarter of a revolu tion. This, as shown in Fig. 5, releases the heads l2 and allows the bolts to be drawn away from each other allowing the ledger, door, or the like, to be opened. This constitutes a very simple Way of looking a book, employing only one look and one key, the 3 look being located in a place in the book where it is not objectionable and is an improved feature of the book when the lock is used for that pur pose. Having thus described my invention and the us advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:— l. The combination of two bolts in axial align ment, and each having a transverse head at the inner end in axial alignment with the bolts, the bolts being movable to place the heads in position for enabling the bolts to be locked together, and a lock having means for locking said heads in contact with each other. 2. The combination of two bolts projecting oppositely, and a cylindrical head on the inner end of each bolt, of a lock cylinder into which said bolts are projectible, a plug in the cylinder having two projections substantially engaging > 2 ' 2,105,590 said heads to lock the bolts from movement, said plug being adapted to turn on its axis to bring said projections into either looking or unlocking position, and. means for holding the plug in the cylinder when locked. 3. The combination with two bolts secured one to each of two opposed covers, each bolt project ing inwardly from its cover and adapted to sub stantially meet midway between said covers, and a head on the inner end of each bolt, of a lock cylinder into which said two bolts are projectible, and a plug in the cylinder having two projections substantially engageable with said heads to lock 5 them together or to release them. MORRIS H. ETSTEN.