US567900A - Stephen c - Google Patents

Description

(No Model.)

s. @.HOUGHTON. l

-PERMUTATION LOCK.

-Iwaten'ted Sept. 1 5, 1896.

, l zur. m d. e 4 a m l To all whom, z3 may eoaccrnf:

'ihvrrnn y arrivi trice@ nrnnN c. nouenrong'fensan' rnAncisoo, CALIFORNIA..

PERM ovarios-Loca.

SPECIFICATION `forming part yof Letters Patent-lilo. '567,900, dated September 15, 18l96.

Application iiled May 28, 1895. 'Serlalliiol 550,909. (No I nodcl.)

lle it known that I, Strnrnnn C. lloUeH'roN, a citizen of the 'United States, residing at San Francisco, in the county of San Francisco and State of California, have invented cer tain new and useful Improvements in Permutation-Locks; and l` do hereby declare that the following is a full, clear, and exact description thereof. Y

My invention relates to perm citation-locks; and its `object is to provide a simple and cheap, but el'l'eetive, keyless lock having changeable combinations andadapted to be used for locking doors, drawers, Ate.

My invention is also particularly Vadapted to lock the driving-wheel of abieycle. This forms an effective preventionof theft and at the same time does'awaywii'h theinconvenience of separate chains and padlocks now commonly used. v

ln any situation, whether on a door, drawer, bicycle, or elsewhere, my lock is a permanent, although removable, attachment, and frein its exceedingly small size andlight'weight it forms an almost unnotieeable addition 'to thc structure upon which it is an attaelu'nent.

ln order that a clear understanding oi my invention maybe obtained, Idescribe it hereinafter in detail, and refer in my description to the accompanying d1awings,which,`in the detail views, show my lock enlarged beyond itsl actual size for the purpose of clearness.

In the drawings the lock is showrnas a matter of convenient illustration, as applied to the frame and crank-shaft of a saiety-bicycle of the diamond-fra1ne type, and Figure l 4is an elevation of the lock, in locked position,-

as applied at the junction of two tubes ofthe frame, a part of the .coupling and lthe crankshaft being shown in cross-section.` Fig'. 2 is a top plan of the same. Fig. Z3 is a central longitudinal section of. the lock. similar section ol' the lock-bolt. Fig. i is a cross-seetion on 'y i/ of liig. el', and Fig. (l is a cross-section on :o a; oi Fig. 3.

A represents an external cylindrical casing having abase-ilange a, by which it is secured to the door, dra\`vc1, bicyclef1an1e, Aor other structure te 4which it is fitted. l n the draw ings two screws 1i lare shown for attaching it -the crankshaft. In this position it is entirelyout of the Wayland need never be removed :from the machines and as it can be made less than an inch land a half yin length and can weigh less than two ounces it forms no appreciable addition to the machine either in size or weight. p Y 4 The open end ofthe casing receives a hol.-` low sleeve l5, which forms a guide'for the head ci the sliding bolt C, the .easing and sleeve bein g preferably threaded to make the latter easily removable. The bolt C passes entirely'tlncugh the easing, a hole cy being formed in the bottom of the latter to permit the beveled'or rounded end of the bolt to protrude. lnA a recess d in the bolt is pivoted a yielding latch e, which is pressed constantly locking-bolt forms a special feature of my invention and greatly adds to its convenience` 4and efiiciency, because at any time and by a single inward pressure the bolt is automatically locked without regard to the position ol the permutation rings or tuniblers. these tumblers the lower one j is a stationary ring which rests upon `ashoulder or ledge 7o oi' the lock-casing and is held in position in any suitable way, as by alpin Z, rising from rsaid ledge and entering a small vslot il in -tl1e The second .tumbler h is edge of the ring. operated by thelirst tuinblerg by means of the .pins it? g2, projecting from the respective tumblers, as indicated in dotted 'lines in Fig. 4) 1.). tumblers f/ and 7L to give sui'licient room for operating these pins. 'The ring or tumbler g) has a pin y projecting from its upper surface, which is struck and directly moved bythe turning of the bolt-head when pushed inwardly, the bolt-head having a corresponding pin 'b'. 'lll e tumblcrs are held V in place and prevented from moving upward by the sleeve B. l. As many o1' these rings or tu lnblers can be used as desired, and l show in illustration three, of which two are movable.

Aispaciug-ring 'mgis inserted between the IOO o l Whenmade according to-the drawings, howbe drawn outward to the position shown in' Fig. A

In applying my lock to a bicycle I prefer to attach it at the junction of two tubes of the frame above the crank-shaft, where it is entirely out of the way. A small hole is drilled in the tube-coupling and a corresponding hole or holes in the crank-shaft, as indicated in dotted lines, Fig. l. Ordinarily a single hole in the crank-shaft will be sufficient and will be so placed in relation to the cranks that at the moment of dismounting in the ordinary way it will bel approximately beneath the sliding bolt of the lock and preferably a little behind it. The bolt is easily pushed down by the hand, and if it should strike theshaft without entering the hole a very slight motion of the bicycle will cause the beveled or y rounded end of the bolt to enter the hole,

where it remains locked until the combination is so arranged as to permit its withdrawal. I have referred before to this feature by which the bolt can be instantly locked as one of the special advantages of my construction.

In ordinary riding there is practically no danger of the bolt slipping accidentally into the hole, since sufficient friction of the parts could be provided to prevent it from being jarred downward; but to absolutely and posi- -tively prevent any possibility of this occurring I have provided a retaining device. (Shown in Figs. 3 and G.) This is a light spring D, secured to the vtop of the sleeve B,

vand which follows the curve of the latter. Its free end is a tooth or projection n, which enters a groove o in the bolt-head, and it has also a thumb-piece p, by which it is released from the groove.

' It is quite practicable to do away with the thumb-piece and with any necessity for positively 'releasing the spring, because if the groove o be made quite shallow and of curved cross-section the bolt can be pushed in past the spring .without diicnlty, and the spring will automaticallysnap into the groove as soon as the bolt is drawn out far enough.

ever, it is an easy matter to release the spring and push in the bolt with onehand.

It should also be stated that the retainingspring can, if preferred,be placed withinthe casing, there being sufficient room below the tumblers, Fig.- 3, to secure such a spring to the interior wall of the casing. -In such a case the bolt itself is slightly grooved, enough for'the spring to seat itself. Such a spring so arranged will hold the bolt securely until a positive pressure is exerted in the bolt-head. This safety device is only used in situations where vjar and movement are expected. In. using my lock for doors, drawers, and the like it need not be provided.

lVhat I claim isl.. A permutation-lock having a easing, a series of rings therein, a bolt having sliding movement in said casing with a catch to engage the rings, said bolt being arranged to turn and operate the rings, said rings being inclosedwithin the casing-to be inaccessible except through the rotary bolt, substantially as described.

2. A permutation-lock having a casing, a series of rings therein, a bolt having sliding movement in said casing with a catch to en gage the rings, said bolt being arranged to turn and operate the rings which are inelosed within the casingl to be inaccessible except through the rotary bolt and means for holding the bolt retracted in all the positions to which it may be rotated consisting of the catch on the casing engaging an annular groove extending about the'bolt, substantially as described.

S. In apermutation-lock and in combina-A tion, a casing having an interior ledge or shoulder and an inner removable sleeve; a series of notched permutation-rings held between said sleeve and shoulder and inclosed within the casing to be inaccessible except through the locking-bolt; and a sliding bolt having a yielding latch and projecting through the end of the casing, said bolt being arranged to rotate and operate the rings substantially as described.

4. In a'perinutation-lock andin combination, a casing having an interior vledge or shoulder and an inner removable sleeve; a series of notched permutation-rings, one or more being movable, held between said sleeve and shoulder; a sliding and turning bolt projecting from the casing, and having a yielding latch and a circular groove, and a spring vengaging with said groove for holding said IOO IIO

Images