US435915A - William m - Google Patents

Description

(No Model.)

W. M. BROOKE. PERMUTATION LOCK.

No. 435,915. Patented Sept. 9. 1890.

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i|,|'| 72 b I HEINWWWIM Y a flay Jayme O o O O INVENTOR 86v @SLQQW BY WITNESSES ATTORNEY.

' UNITED STATES PATENT OFFICE.

WILLIAM M. BROOKE, OF BROOKLYN, NEW YORK, ASSIGNOR TO JOHN H. BARTON, OF SAME PLACE, AND JAMES J. EBERT, OF NEW YORK, N. Y.

PERM UTATlON-LOCK.

SPECIFICATION forming part of Letters Patent No. 435,915, dated September 9, 1890. Application filed August 22, 1889 Serial No. 321,633- (NO model.)

To all whom it may concern: In the drawings the tumblers O are shown Be it known that I, WILLIAM M. BROOKE, to be triangular in cross-section; but tumof Brooklyn, county of Kings, and State of blers of other forms in cross-section may be New York, have invented certain. new and used if the grooves in the bolt and holders 5 useful Improvements in Locks, of which the be made to correspond.

following is a full, clear, and exact descrip- IVhen the parts of the lock are assembled," tion, reference being had to the accompanyas indicated in Figs. 2 and 3, the guides 19 1) ing drawings, and to the letters of reference hold the bolt straight and the spring 0 keeps marked thereon. the bolt-shank in contact with the tumblers To The object of this invention is to provide 0. \Vhen the tumbler-grooves g g are an improved permutation -lock especially brought in line beneath the boltshank, as adapted for desks, trunks, 850. shown in Figs. 2 and 3,by the operators mov- Reference is to be had to the accompanying of the tumblers into such positions by ing drawings, forming part of the specificameans of the studs f f, the bolt maybe easily 15 tion, in which similar letters of reference inwithdrawn, because the bolt-grooves and dicate corresponding parts in all the figures. tumbler grooves are of like depth; but if any Figure l is a front elevation of my imone of the tumbler-grooves is out of line with proved lock. Fig. 2 is a rear elevation of the the others beneath the bolt that tumbler will same with back plate removed. Fig. 3 is a prevent the withdrawal of the bolt. It is 2o sectional elevation of the same on line 5c so, evident then that each tumbler may have a Fig. 2. Fig. 4. is an elevation of the inner number of grooves g g, and consequently face of the back plate. Fig. 5 is a perspecmany locking and unlocking combinations tive View of one of the tumblers. may be made, which combinations will be in- In the drawings, A represents the main dicated by the positions of the studs ff rela- 25 portion of the lock-case, in whose front are tively to certain of the figures m m on the two or more (in this case three) longitudinal face of the lock.

slots a a, and B is the back plate, having se- Having thus described my invention, I cured about centrally on its inner face two claim as new and desire to secure by Letters guides 19 b, between which extends a flat Patent- 8o 0 spring 0, that is also secured at one end on 1. In a keyless lock, the combination, with the said inner face of said back plate. the case-front provided with two or more \Vithin the lock-case two or more (in this longitudinal slots at a, of back plate B, procase three) tumblers O are arranged lengthvided with guides Z) Z), secured on its inner wise and parallel to each other and are held face, spring 0, tumblers 0, having transverse 5' apart in place against the case-slots a a by grooves g g and provided with studsf f, that holders D, secured on the inner face of the project through the slots a a, holders D, procase-front, said holders being provided with vided with transverse grooves, and bolt E, transverse grooves d d, in which the said having transverse grooves, all constructed, ar-

. tumblers are longitudinally movable, and ranged, and operated substantially as herein 9o 40 said tumblers C are provided with studs ff, shown and described.

that project through the slots 0. a, convenient 2. The combination, with the lock-case and to the hand of the operator. Each tumbler bolt and spring a, of the guides 12 b, substan- O has one or more (in this case one) transtially as and for the purpose described. verse grooves g 9 made in it, and the bolt E In testimony that I claim the foregoing I 5 has formed in its shank transverse grooves have hereunto set my hand, in the presence 72, h, (in this instance three,) corresponding of two witnesses, this 21st day of June, 1889. in number to the number of said tumblers.

The bolt E is designed to have its head WILLIAM M. BROOKE. firmly secured in the top of the desk or trunk Witnesses: o to which the lock is applied, so that its JACOB I. STOVER,

shank only shall enter the lock-case. HERBERT VALENTINE.

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