US1217146A - Trunk-lock. - Google Patents

Description

M. Bum. TRUNK LocK. APPLICATION FILED MAY 31| |9l6.

2 SHEETS-SHEET l.

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TRUNK LOCK.

APPLICATION FILED MAY 31. |916.

Patented Feb.v27,1917.

2 SHEETS-SHEET 2 unire FFFQ.

MATTHEW Bonne, or CHICAGO, ILLINOIS.

TRUNK-Look.

new and useful Improvements in Trunk# Locks, of which the following is a speciica-v tion.

rhe essential object oi: this invention is to provide a trunk lock of the multiple-bolt type in which there are two bolts adapted to pass through or coperate with a suitable staple or latch. Both bolts are adapted to be operated by the same key, and each bolt `must be suitably actuated in order to lock or unlock the device.

ln the drawings forming part of this specification and in which like numbers of reference denote like parts wherever they occur, Figure 1 is a front elevation of a lock constructed in accordance with the invention, the removable section or cover of the casing being clamped or bolted in place; Fig. 2 is a view of' the parts as they appear when thef casing cover is removed; Fig. 3 is a view Vsimilar to Fig. 2, the outer one of the two pivoted tumblers which control the boltcarrying sliding plate` likewise being removed; Fig. 4 is a view similark to Figs. 2 and 3 in which the bolt-carrying sliding plate is exposed; Fig. 5 is a view showing the rocking bolt, the bolt-carrying sliding plate depicted in Fig. 4 being removed; Fig. 6 is a vertical sectional view of the line 6-6,

f F ig. Figs. 7 and 8 are views, respectively,

of the outer and inner tumblers by which the holt-carrying sliding plate is locked 1n place; Fig. 9 is a view of the bolt-carrying 5; Fig. 13 is a detail in section on the line' 6 6, Fig. 5; and Fig. 14 is a detail in section on the line 14-14, Fig. 11. Y

rFhe speciiic embodiment of the invention depicted in the drawings is that of a lock best adapted to be used upon a trunk or chest, in which the outer casing 1 within which all of the movable parts are contained, is mortised into the base or bottom part of the trunk. The strap 2 can be secured by screws 3 to the lid or cover of the trunk, and the staples 4, which are formed integrally Specification of Letters Patent. Fgmjnged Feb, Application leor May 31, 1916. Serial No. 100,778.

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with ori otherwise permanently secured to the vstrap 2, project outwardly and normally downwardly from the cover or lid, and are arranged in registration with suitable slots 5 in the top member 6 of the outer casing 1. The base-plate of the casing 1 bears posts 7 which are provided with a squared-off head y.from which the Screw-threaded .endS pro-A jects, and the removable cover-plate. 9; which both conceals and protects the operating parts, is adapted to be ,screwed or secured in placebynutslO7 resting against the heads 8 of posts 7.

.Projecting outwardly from the base-plate of the casing 1 is Athe'key'post 11, and the key 12 provided with the hollow end 13 isV adapted to lit overand revolvey around said key post 11 as an aXis. 'A tube 14 slotted at 15 is secured to the'cover-plate 9, and the aXis of said tube 14 coincides with the axis of the key post 11 and of the stem of the key 12. Said tube 14 is revolubly mounted upon the plate 9 andis permitted to move in a counter-clock-wisedirection 1 through only a few degrees of arc and then back again to a normal position. The arm 16 is secured to said tube 14 and extends radially therefrom, said arm being outside of the plate 9, but being placed closely to or in engagement with said plate. Upon the outside of plate 9 there isv fastened a spring-likel member 17 which is depicted in the drawings as having an ornamental shape, but which may be made of any desired shape. Said member 17 is fastened to the lplate 9 by rivets or bolts 18 at its right end but at its left end (Fig. 1), said member 17 is permitted to move toward o-r away from the plate 9. The inner side of the member 17, meaning the side which is adjacent to the plate 9 (Fig. 13) is hollowed out at 19 to receive the arms 16, said hollowed part 19 being provided with a beveled edge, so Vthat when the arm 16 is swung in a counter-clock-wise dir ction (Fig. 1),` said arm 16 will ride upon said beveled edge and will lift or force the member 17 outwardly or from the plate 9 for a short distance. rlhe right hand end of said member 17 cannot move on account of the bolts 18, but since the member .17 is made of spring metal or similar'material it will return to normal position in close engagement with cover-plate 9 whenever the arm 16 is placed as indicated by .the dotted lines in Fig. 1. The plate 9 is provided with the keyhole 20, which is in alinement with the slot in the tube 14, and the eye 21 of said keyhole serves not only to permit passage ot the pin 12 of the key thereto, but also permits the tube 14 to be secured Ato the plate 9. rlhe key depicted in the drawings is provided with thebit 22 in which the slot or gating V23 is cut, and said bit 22 is adapted to pass through the keyhole in the plate 9 as Well as through the slot 15 in the tube 14.

The slidable boltfcarrying plate 24, shown best in Figs. 4 and 9, comprises a llatv plate o1 metal provided With suitable perforations, the use and function of Which is hereinafter set forth, and bearing, also, certain operative parts thereupon. At its upper edge said plate 24: carries the bolt-members 25, which are preferably three in num- Y ber, separated by the spaces 26, and beneath said bolt members 25 are recesses 27 `formed by cutting away part oi the metal or" the sliding plate 24. l./lhen the staples 4 are allowed to enter the spaces26 the sliding plate 24 can be moved toward either the right or leit (Figs-2 and 3)', and under such circumstances the device will bey locked because the staples` 4 25, which bolts 25 are connected With the main body of the sliding plate 24 by the Webs 23. Since the strap 2 to which the staples 4 are fastened is permanently secured by screws 3 to the lid or cover 29, it

is obvious that the staples devoidof longitudinal movement and can be moved only toward or away from the casing 1 as the cover 29 is lowered or raised. The casing 1 being mortised in the main body or'` the trunk or other article upon which the lock is used is secured permanently in place, and the staples 4 are held by the bolts 25 When the parts are inthe positions depicted by way of example in Figs. 2, 3, and 4. llhen, however, the sliding` plate 24 and the bolts 25 are moved to a point Where the spaces .are in registration with the slots 5 in the top 6 of' the casing, the staples 4 may then be permitted to pass through the spaces 2 6,

and when the slots 5 and spaces 2G are 1n registration, but at no other time, the lid may be raised.

Secured to theV base-plate lis a-shank 30 (Fig. 4) the head or' which projects through the slot 3l in the sliding` plate 24. The head of this shank 30 is rounded off and the tumblers 32 and are pivotally mounted upon saidshank 30. 'llo each of said tumblers 32 and33 aspring fastened and said tumblers 32 and 33 are recessed or slotted at 35 and 3G. A. stud or projection 37 (Figs. 2 and 4) is carried upon the sliding plate 24`l Whichstud isreceived Within the slots 35 and which mustpass through the slots 36. Unless the proper key is used, the tumblers and33 will not be moved the right distance to permit the stud 37 to enter and pass through the longitudinal slots 36, and the will be heldin pla-ce by the bolts bit ot thekey 12 must be ot the right height and the slot or gating 23 must be cut at the right position and of the right depth.; otherwise when the key is revolved it Will not act properly upon the tumblers 32 and 33 and Will not move said tumblers to the exact positions Which they must respectively a tain in order to permit the stud 3.7 to ride into and through the slots 36, and, obviously, unless the stud 37- can enter the slot the sliding plate 24, together With the bolts 25 which are carried thereupon, must remain immovable. The sliding plate 24 carries a strap 33 recessed or slotted at 39, which member 33 receives the loose ends of the springs 34. The tumblers 32 and 33 are rocked upon the pin 30 as a pivot and moved in a counter-clockeivise` direction by the action of the key 12, but arereturned to normal orsta-rting position because of the resilience oi" the springsv34. rllhe member 38 is ol" a` sull'icient. length to permit it to engage thesjl'irings 34 regardless of the position of the sliding plate 24.A

Although the parts thus far described sui-licer to constitute anv ordinary lock Which is, obviously, a lock so constructedl as to be readily manipulated and picked, it is because of the combination of the parts previously described With those hereinafter to be described that the more valuable and salient features ot the invention arise. rllhe pin or shaft 40 (Fig. 5) is rigidly secured to the base of the casing 1, and the trigger 41 is pivotally mounted upon said'pivot 4G. lllfhcn said trigger 41 is in the position depicted in the full lines of F ig. 5 the bolt 42 carried upon or integral with the trigger 41, will project beneath and across one of the spaces 5 through which a staple 4 must pass Whenever the lid 29 is to be locked or unlocked, and when the bolt 42 is in that position the staple 4 can neither venter or leave the space 5; hence, although the bolts 25, by their cooperation with the staple 4, serve to lock the sta-ples 4 in place or permit'thein to be moved as the case may be, the trigger 41 and the bolt 42 thereupon serve the same purpose, and it isV necessary to actuate both the trigger 41 and the sliding' pla-te 24 and to actuatev both of said members in the proper manner and at the proper time in order to permit the staples to be unlocked. rlhe trigger 41 is recessed at 43 beneath the bolt 42, and in said recessed or cutaway portion 43 the staple is adapted to be received When the trigger is in the full line position of Fig. 5. A spring is secured to the trigger 41 and one enr of said spring 44 normally engages the stud 45, the normal action of said spring 44 being to move the trigger from the full line to the dotted line position Whenever the trigger 41A is released. ln the trigger 41 is a recess or slot 46 (Fig. 11) Which receives the stud or projection 47 carried near one end of the springcontrolled rocking catch 48. The catch 48. is pivotally mounted upon a shaft 49 which passes through a bifurcated stud 50 formed upon the base of the casing 1, and the catch 48, therefore, is permitted to have a slight rocking movement traveling in aV plane at right angles to the plane in which the trigger 41 is adapted to rotate. When the parts are in the full line position of Fig. 5, the stud 47 will seat in the notch or recess 46 and will hold the trigger 41 in said full line position, but when, however, the left hand end (Fig. 11) of the catch 48 is moved away from the base member 1 said stud 47 is lifted out of the notch 46, kand thus the trigger 41 is snapped by the spring 44 from the full line to the dotted line position of Fig. 5. At a point adjacent to the key post 11 the metal of the casing 1 is removed at 51 and the beveled end 52 of the catch 48 is seated in said recess 51 (Fig. 14). When the edge 58 of the key-bit 22 rides over said beveled end 52, and when it is pressed thereupon, the beveled end 52 of the pivoted catch 48 is pressed toward the casingl, thereby moving the opposite end away from the casing and carrying the stud 47 out of the re Y cess 46, thus releasing the trigger so that it may be actuated by the spring 44.

The trigger 41 bears the shoulder 54, and upon the sliding plate 24 is a stud 55 (Fig. 9)'l Vhen the sliding plate 24 is pushed to- Vward the right in Fig. 9 or to the left in Figs. 2 and 8, the stud 55 will engage the shoulder 54, and will ride therealong, and as it does so, will actuate the trigger 41 and cause same to rotate upon its axis until it reaches the full line vposition of Fig. 5. When the trigger does reach that position, the stud 47 carried upon the pivoted catch 48 will seat in the notch 46 (Fig. 11) and lock the trigger in'place, and spring 56 in- Jferposed between the pivoted catch 48 and the casing normally tends to keep the stud 48 seated in the notch 46, but when the edge 58 o-f the key-bit 22 rides over the beveled end 52 of the pivoted catch 48, the catch thereby is caused to rock upn its pivot 49 against the resistance of the spring 56.

The stud 55 is upon that side of the sliding plate 24 which is exposed in Fig. 9, and upon the same side is a pivot 57 around or upon which'plate 58 is adapted to rotate. Said pivoted plate 58 is perforated at 59 and is normally kept in the position indicated in the full lines (Fig. 9) by the spring 60, the free end of which bears against the stud 61, and when the pivoted plate 58 is moved as hereinafter described to the dotted line posi: tion the perforation 59 in the plate 58 is adapted to register with the slot 62 formed in the sliding plate 24. At its lower edge (Figs. 4 and 9), the sliding plate 24 is provided With a recess 68 having the curved edges 64 against which the key-bit 22 is adapted to impinge, and when the key is rotated upon the key post 11 as an aXis, the key causes the plate 24 to slide in one direction or the other according to the direction of rotation of the key, because the key-bit 22 strikes the' edges 64 of the recess 68. rlhe j sliding plate 24 is provided with another re- 'space 65 without actuating the sliding plate 24. The member 17 carries the pin or stud 68 which projects inwardly through the outer cover 9 and through the slot 62 in the bolt-carrying plate 24. If the pivot-ed plate 58 be moved to the dotted line position of Fig. 9 at a time when the perforation 62 of said plate 58 is in registration with the stud 68, said stud will seat in the perforation 59 and will retain the pivoted plate 58 in the dotted line position. When, however, the tube 14 is rotated in a counter-clock-wise direction (Fig. 1) the arm 16 causes the left hand end of the spring metal plate 17 to be moved away from casing member 9; and as the member 17 thus moves, the stud 68 rides out of the. perforation 59 and the pivoted plate 58 is snapped back by means of spring to full line position (Fig.`9).

The operation of the parts is as follo-ws Assuming that at the locked position the sliding plate 24 is at the @Xtreme left of the casing 1, as indicated in Fig. 4, that the trigger. 41 is in the full line position (Fig. 5),

yand that the pivoted plate 58 is in the full oted plate 58. The first revolution of the,

key will move the sliding plate 24 for about half its full length of travel or until the projection 37 seats in the middle recesses 35, The operator continues the revolution of the key giving it a second complete revolution, hy means of which second revolution the sliding plate 24 will be carried to the dotted line position of Fig. 2, in which position the slidng plate 24 is at the eXtreme right of the casing. When the key makes said second revolution, it forces the plate toward the right, because of the engagement of the bit 22 upon the left edge 64 (Fig. 9) or right edgej64 (Fig. 4) of the recess 63. lt is 0bvious that as the sliding plate 24 moves from the full line position of Fig. 2 tothe dotted line position in the same hgure, the recesses 26 which separate the bolts 25 from each other come into registration with the recesses or slots 5 in the upper edge of the casing 1, but although in such position the bolts 25 do not prevent Vwithdrawal of the staples 4, the lid 29 cannot be lifted because the boltr42 on the pivoted trigger 41 still serves to re tain the staples 4 inlocked position indicated in Figs. 1 and 5 of the drawings. ln order to release the trigger 41, it is necessary to continue the rotation of the key until the bit 22 reaches the angle shown in Figs. 2 and 3, same being about the position as the 9 on the ordinary clock dial, and when the key is thus moved, it must be pushed toward the base of the casing 1 and away from the cover-plate 9; that is to say, the key would have to be pushed downwardly in Figs. 6 and 12 so that the edge 53 of the bit 22 will press upon and move the beveled end of the .nose 52 of the pivoted catch 48. As the edge 53lthus engages the pivoted catch 48, it de press-es one end of said catch while elevating the other, thus lifting the stud 47 out of the notch 45, whereupon the spring 44 snaps the pivoted trigger 41 to the dotted line position of 5, inwhich position the bolt 42 is out of the path of travel of the staple 4 and, so far as the trigger 41 is concerned, the` lid 29 may be raised. The operator thereupon must turn the key in a counter clock-wise direction and move it through about 280 of arc until the key stands at about the posin tion of the 12 on a clock dial, and in thus moving in the counter-clockwise direction, the bit 22 again entersthe recess 63, engages the right-hand edge 64 (Fig. 9), thus causing the sliding plate 24 to move a short distance tonf'ard the left (Figs. 2 and 3'), until the recesses 2G are in registration with the staples 4.

lVhen it is desired to lock the device, the lid 29 is lowered and the staples 4 resume the position indicated in FiOs. 1 and 5, and the key is rotated in a counter-elock-wise direction for at least two complete revolutions, thus causing the plate 24 to travel toward the left until it reaches the full line position of Fig. 2j which movement of the plate 24, because of the coperatien of the stud 55 with the'sheulder 54 upon the trigger 41, causes said trigger to be moved from the dotted line position (Fig. to the full line position, whereupon the stud 47 will seat inthe notch 46 and retain the trigger 41 in the full line position until it is again released.

lf the key be rotated once or oftener after the plate has reached the full line position (Fig. 2), the bit 22 will strike the bottom edge 69 of the pivoted plate 58 and will cause said plate to rock upon its pivot 57 until the perforation 59 in said plate is in registration with the slot 62 in the sliding plate 24 (Fig. 9); whereupon the stud 68, which projects through the slot 62, will seat in said notch 59 and keep the plate 58 elevated. lf the key then be rotated in the clockwise direction, it will not aetuate the sliding plate 24r because the right-hand edge (Fig. 4) ofthe Vrecess 55 is beyond the path of travel of the-.bit 22', and it is not until the plate 5S'is released from the dotted line position of Fig. 9 that the key can actuate the sliding plate ln order that 'the plate 5S may thus be released, the key is moved to the full line position of Fig. 6 and given a slight turn in a counter-elock-wise direction. rllhe bit 22 will engage one edge or wall of the slot 15, 'and thus tube 14 will be slightly rotated and the radial arm 1G will be swung'th'rough ya few degrees of arc until it rotates the left end' (Fig. 1) of the spring-like member 17, to which the stud G8 is secured. iisthev members 17 and 9 are thus slightly separated from each other, the stud 68 is caused to move out of the notch or perforation 59, whereupon the spring 60 returns the plate 58 to full line position (Fig. 9).

It will beobvious from the foregoing description ofthe parts and of the operation of the lock that a person must know how to use the lock. lf, for example, the parts are in the dotted line position (Fig. 9), the key might rotate indefinitely without accomn plishino' anything, and the user must know that the rst step required is to produce the partial revolution of tube 14, and thus in sure the release of the pivoted plate 5S. Even after the sliding plate 24 and the bolts 25 carried thereupon are moved to the point where the staples 4 can pass through the slots 25, the bolt 42'on the trigger 41 still prevents the staple 4 from moving, and the operator must know when and how to release the pivoted trigger 41. This lock, there4 fore, possesses some of the advantages of a combination lock because certain knowledge upon'the part of the operator is necessary to operate the device, for even though a person ,should be provided with a properly-litting key, and might thus be able to move the sliding plate 24 and bolts 25 to an appropriate position, that of itself will not unlock the device, for the staplesv cannot be moved until the trigger 4l is released. lf the user should not care to carry his key with him, he can safely leave it in the lock because even though the key were there in place, an unauthorized person would not know how to use the key and could not open the lock. lt is obvious that the trigger 41 may be placed upon the right side (Fig. 5) of the lock instead of on the left, this being simply a reversal of parts necessitating a change in the sequence of operations; and the position of the pivoted catch 48 may be shifted so that instead of being actuated on the last rotation oi' the key, it is to be actuated at a different time, The beveled nose 52 at one end of the pivoted catch 48, must project a slight distance above the surface of the base plate oit' the casing 1; otherwise the edge 53 of the bit 22 would not trip the catch 48. The exact shape of the catch 48 is, of course, immaterial, and numerous chan-ges in the details and construction of parts may be made without departing from the scope of the invention.

I claim as my invention:

1. In a-lock of the character described, the combination of a casing and a bolt-carrying sliding plateadapted to be received therewithin, means carried upon said plate adapted to coperate with and be engaged by the key, and a spring-controlled bolt adapted to be unlocked by the action ot the key and to be locked by the action of said sliding plate.

2. In a lock of the character described, the combination of a casing, a bolt-carrying sliding plate provided with recesses, which recesses are adapted successively to receive the key thereby to actuate said bolt-carrying plate, a pivoted member also carrying a bolt, and means actuated by the key for operating said pivoted member` 3. In a lock of the character described, lthe combination of la casing, a bolt-carrying sliding plate provided with recesses, which recesses are adapted successively to receive the key, thereby to actuate said bolt-carrying plate, a pivoted mgmber also carrying a bolt, and means actuated by thekey for operating said pivoted member, said sliding plate and said pivoted bolt being actuatable independently of each other.

4. In a lock of the character described, the combination of a casing, a bolt-carrying sliding plate, a casing within which said plate is received, there being openings in said sliding plate into which the means to be locked are adapted to pass, a pivoted member also cooperating with the means to be locked, means independent of said sliding plate adapted to permit the movement of said pivoted member in one direction, 'and means actuated by the plate adapted to cause the movement of the pivoted member in the opposite direction.

5. In a lock of the character described, the combination of a casing, a bolt-carrying sliding plate adapted to be received therewithin, said plate being adapted to be actuated by the key, a bolt mounted in the casing, and means intermediate said last-mentioned bolt and said plate whereby said last-mentioned bolt is moved in one direction' by said plate, and means actuated by the key adapted to move said last-mentioned bolt in the opposite direction. Y

6. In a lock of the character described, the

combination of a casing, a bolt-carrying Y catch thereby to permit said bolts to moveV in one direction, and means intermediate said boit and said sliding plate whereby said bolt is moved in the opposite direction by said plate.

7. In a lock of the character described, the combination of a casing, a bolt-carrying sliding' plate adapted to 4be received therewithin, said plate being adapted to be actuated by the key, a bolt mounted in the casing, a pivoted trigger upon which said last-.mentioned bolt is carried, a pivoted catch adapted to coperate with said trigger and hold same against movement, means for actuating said trigger when said catch is released, means cooperatingr with the key and adapted to actuate said catch., thereby to release the trigger, and means intermediate said trigger and said plate whereby said trigger is moved in one direction by the actuation of said plate. l

8. In a lock of the character described, the combination oi a casing, a bolt-carrying sliding plate adapted to be received therewithin, said plate being adapted to be actuated by the key, a bolt, a trigger upon which said bolt is mounted, a pivot 'secured to the casing and upon which said trigger is adapted to rotate, a rocking catch adaptedto rock 1n a plane which intersects the plane of n movement of said trigger, means intermediate said Vcatch and said trigger whereby said trigger is adapted to be retained in one position by said catch, means adapted to actuate said trigger when said catch is released, said casing being recessed and one end of said catch-being received within'said casing-recess, said end thus retained being adapted to be engaged and actuated by the key, and

means intermediate said trigger and saidv sliding-plate, said means being adapted to translate the reciprocatory movement of said sliding plate into rotation of said trigger about its'pivot as an aXis.

9. In a lock of the character described, the

' combination of a casing, a bolt-carrying sliding plate adapted to be received therewithin, said plate being adapted to be Yactuated by the key, a bolt upon said sliding plate, a second bolt in juxtaposition to said first-mentioned bolt, a movable staple adapted to coperate with both of said bolts, said staple being secured to the member to be locked, a spring-controlled trigger `upon which said second-mentioned bolt is carried,

a pivoted catch adapted to rock in a plane which intersectsl the plane of rotation of said rigger, said catch being provided at one end `with a beveled head adapted to be engaged by the key, means adjacent the other end of said catch whereby said catch is adapted to retain said trigger in a predetermined position, and means intermediate said trigger and said sliding plate adapted to translate the'reciprocatory movement of said plate into movement of said trigger upon its pivot as an axis. Y

i0. lln a lock of the character described, the combination of casing, abolt-earrying sliding plate adapted to be received therewithin, said plate being adapted to be actuated by the key, a bolt upon said sliding plate, a second bolt in juxtaposition to said tiret-mentioned bolt, a movable staple adapt- Ved to cooperate with both of said bolts, said staple being` secured to the member to be locked, a spring-controlled trigger upon which' said second-mentioned bolt is carried, a pivoted catch adapted to rock in a plane 1 n which inteisects the plane of iotation of said trigger, said catch being provided at one end with a beveled head adapted to be engaged by the key, means intermediate the other end ot said catch whereby said catch is adapted to retain said trigger in a predetermined position, and a projection and shoulder cooperating therewith and adapted to translate the movement of said plate into movement of said trigger upon its pivot as an axis.

il. ln a lock of the character described, the combination of a casing, a bolt-carrying sliding plate provided With recesses adapted successively to receive the key, said key being adapted to enter said recesses and thereby translate the rotation of said key into longitudinal movement oi' said plate, a pivoted trigger, a bolt in connection With said pivoted trigger, a rocking catch,ineans intermediate said catch and said trigger whereby said catch is adapted to retain said trigger in one position, one end of said trigger being disposed in the path of travel ot said key and being located at a point Where said key will engage the same when said key has passed out of said recesses in said sliding plate.

l2. ln a lock of the character described, the combination of a casing, a bolt-carrying sliding plate, a staple carried* upon the member to be locked, said staple being gaged by said bolt when said plate is at the limit ot its path of travel in either direction, said staple being adapted to be released from said bolt When said sliding plate is in a position intermediate the extreme limits ot its path of travel, a pivoted member, a bolt in connection with said pivoted member, said second-mentioned bolt being adapted to engage the same staple that is engaged and locked by said first-mentioned bolt, a key adapted to actuate said sliding plate, and means adapted t0 be engaged by the key and being located intermediate said key and said pivoted plate, said last-mentioned means being adapted to be engaged by the key at a time when said rst-mentioned bolt coperates ivith and locks said staple.

13. ln a lock cic the character described, the combination of a casing, a bolt-carrying sliding plate, a staple carried upon the member to be locked, said staple being engaged by said bolt when said plate is at the limit of its path of travel in either direction, said staple being adapted to be released rom said bolt when said sliding plate is in a position intermediate the extreme limits .oit its path of travel, a pivoted member, al bolt in connection with said pivoted member, said second-mentioned bolt being adapted to engage the saine staple that is engaged and locked by said first-mentioned bolt, means intermediate said pivoted member and .said sliding plate and adapted to translate the sliding movement of said plate into rotary movement of said pivoted member, a rocking catch, means intermediate one end .of said catch and said pivoted member and adapted to cause said catch to lock said pivoted member in one position, the other end vot said catch being placed in the path of travel of the key, and beingadapted to be engaged yand moved by said key, said key being adapted to actuate ,said plate when said key is partially rotated and being -adapted to engage said catch when said key is further rotated.

In testimony whereof l have atlixed my signature.

' MATTHEW? BURDA.

Gopies of this patent may Yne obtained 4for ve'eents each, by addressing the Commissioner of Eatents,

Washington, D. C.

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