USRE6959E - Improvement in combination-locks - Google Patents

Improvement in combination-locks Download PDF

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Publication number
USRE6959E
USRE6959E US RE6959 E USRE6959 E US RE6959E
Authority
US
United States
Prior art keywords
tumblers
plate
lock
disk
turning
Prior art date
Application number
Other languages
English (en)
Inventor
Henry Clarke
Original Assignee
The Claeke lock Company
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Publication date

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  • My invention relates to keyless combinationlocks of the class in which a series of tumblers or slides move endwise in lines substantially parallel with the shaft or spindle of the lock, and constitutes an improvement on the lock shown in Letters Patent No. 109,386, granted to me November 22, 1870, which, so far as my knowledge extends, shows the first lock of the class hereinbefore referred to.v V
  • Figure 1 represents a front or face view
  • Fig. 2 a vertical section therethrough on the line as m of Fig. 1
  • Fig. 3 a horizontal section on the line y y of Fig. 2
  • Fig. 4 represents detail views of the slides or tumblers.
  • Fig. 5 represents a horizontal section on the line 2 z of Fig. 2; and
  • Fig. 6, a section similar to that shown in Fig. 3, delineating a modification of the lock.
  • the working mechanism of the lock is mounted on a case, A, adapted to be secured to the inner side of a door or drawer. A portion only of the mechanism is thus inclosed, the greater portion being incased within a sleeve, B, projecting through the outer plate or casing of the look.
  • This sleeve B passes loosely through the casing, in which it turns freely.
  • Teeth b, on the lower edge of this sleeve protrude throughnotches or slots in a plate, 0, capable of turning freely within the casing, and with the sleeve, the two being interlocked by bending one or more of the protruding teeth outwardly against the plate B.
  • This plate serves as a stop for, or as a means of actuating, the locking-bolt, as will hereinafter be explained.
  • a shaft or spindle, D passes through the lock-case and forms the axis or pivot of the mechanism.
  • This shaft may be lengthened so as to form a convenient medium for fastening the lock in position, and is secured by a nut, d, screwing onto the inner end of the spindle.
  • a washer, d is interposed between the back of the lockplate and the plate 0.
  • a plate, E provided with notches c in its periphery' for the passage of the tumblers or slides, is mounted upon the spindle, which also'carries at its outer end a disk, F, provided with perforations f for the passage of the tumblers, which disk forms the faceplate of the lock.
  • the tumblers G G are, by preference, of two classes, active and passive. They move endwise through the notches of the plate 0 and perforations in the,
  • disk F above mentioned, and are arranged concentrically around the central spindle D and inside of the sleeve B, against which they are pressed by springs h, which compensate their wear and create sufficient friction to hold them in the position in which they may be set.
  • the springs h are shown in the drawing as formed by cutting a sheet-metal cylinder into tapering strips, the number of which is equal to that of the tumblers G G, the strips extending nearly to the notched plate (3. All the tumblers are provided with fase notches g, for the purpose of misleading anyone endeavoring to discover the relative positions to which the notches of the active and passive tumblers may be brought to admit of the turning of the.
  • the active tumblers G are provided with grooves or notches g of such depth, and at such distance from the disk F, as to allow the teeth in the plate (3 to pass without coming in contact with said tumblers when in their lowest or innermost position.
  • the grooves or notches g of the passive tumblers G are at a greater distance from the disk than those of the active tumblers, thereby requiring the passive tumblers to be raised or withdrawn a certain distance, in order to bring their grooves into line with the turning plate to allow its teeth to pass through them.
  • the turning sleeve Bis surrounded by an ornamental band, I, capable of moving endwise upon it, but prevented from turning independently of it by a stop,t', workingin a slot in the band, extending nearly to its inner truded through the disk, and when' the band is shoved in'the tumblers are left thus protruding through the disk, in which position th notches of the passive tumblers are brought into line with the turning plate, and
  • those of the active tumblers are brought into the same line by pushing them inward, when the plate can be turned and the locking-bolt released by the turning of the band.
  • the turning plate 0 when in the locking position shown, bears against the back of a hook, J, turning on a pivot,j, and provided with a spring, j and athumb-piece, P.
  • the hook interlocks with a catch, K, se-
  • the arrangement of the lock can readily be. altered to suit the different objects to which it may be applied; for instance, the turning plate may be directly connected with a bolt corresponding with that of an ordinary look, as shown in Fig. 6, in which no springs are shown or required, or other modifications in shape or construction may be made, the principle hereinshown remaining unchanged.
  • Fig.1 the lock is shown as provided with a lid or cover arranged. to swing 'or slide back upon a pivot like the ordinary shield or cover for key-holes.
  • this cover is shown as provided with a flanged rim, to permit of its being slipped endwise over the band.
  • lid The use of either lid is to protect'the face of the lock and the tumblers from injury by blows, and to keep the parts clean and free from dust.
  • tumblers merely rest in their guideways, they can readily be removed or replaced by withdrawing the disk, and, as they are interchangeable, they can readily be shifted from one guideway to another to vary the combination.
  • Each hole in the disk through which a tumbler passes may for convenience be numbered or lettered.
  • Eight tumblers are shown in the drawings, respectively marked A, B, G, D, E, F, G, and H.
  • the active tumblers are supposed to be those indicated by the letters A, D, F, and H.
  • the operation of the lock is as follows: Suppose the parts to be in their locked position, as shown in Fig. 3, and it is desired .to unlock it.
  • the band I is pulled out, thus'protruding the ends of all the tumblers equally through the disk, the effect of which, as before explained, is to bring the notches of the passive tumblers into the proper position for the turning of the plate, which releases the bolt.
  • the band is then shoved in, leaving the tumblers protruding.
  • the active tumblers A D F H are then shoved in to their original position, bringing their notches into line with those of the false tumblers, and with the teeth of the turning plate.
  • 1870 has no lock-case, such as shown in the present instance, and its enveloping ring turns with the spindle, whereas inthe present case the spindle is fixed, forms the medium through which the turning sleeve and disk are secured to the case, and carries a notched plate and disk, through which the tumblers slide, and the endwise-moving band turns :with the sleeve independently of the spindle and of the face-plate, through which blers protrude.

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