US827178A - Lock. - Google Patents

Description

No 827,178. 'PA-TENTEDJULY 31, 1906.

I T. E. POLLMANN.

LOOK.

APPLICATION FILED APB.17,1905.

3 SHEETS-SHEET 1.

WITNESSES:

INVENTOR.

9. zfiwa; I vmma THE NORRIS PETERS C6,, wasnnvm'cu, u. c.

N0- szmvs. V PA-TENI'BD JULY'814, 1906,. :2. E. POLLMANN.

LOOK. APPLICATION FILED APE.17,1905.

3 BHEETS+SHEET 2.

WITNESSES;

|THE NORRIS PETERS can, WASHINGTON, n. c.

tion, such aswill the casing and'plates of the releasing-key coeperates. reference indicate like UNITED STATES. PA

J TONIUS E. POLLMANN, or BANT BY WiLi iELMsHAvEN; eERMANY.

Loo

To (ZZZ whom it may concern:

citlzen of Germany, and a resident of Bant by tain new and useful Improvements in Locks;

- and I do hereby declare the following to be a Specification of Letters Patent. Application filed April 17a 1905-. Seria1No.Z55,98fii e it known that I, ToNiUs E. PoL-LMANN, a

'Wilhelmshaven, Germany, have inventedcerfull, clear, and exactdescription of'the invenenable others skilledin the art to which'it appertains to make and'use the same, reference being had to the accompanying drawings and tothe figures ofreference marked thereon, which form a part of this specification. m ii My invention relates to coin-controlled more especially adapted for looking a bicycle,

locks, and is shown in the drawings'as being vehicle, or thelike to a wall, building, or post, but may also be adapted to nearly any use'to which a bolt-lock might be applied.

, The object of my invention is the provision of'a durable andefficient'lock of'the stationary class the arrangement,*operation, and parts of which are fully construction of the described in the following specification and; shown in the accompanying drawings, in.

which- Figure l is a -fro'nt elevation of the inven' tion with the front casing removed and showing the operative parts in normal or unlocked position. Fig. 2 is a similar view with the f operative parts shown in loekedposition-and portions thereof in section.

In the lower right-'hand'corner of this figure the mechan ism employed for locking the operativeparts to the backing plate is shown partly broken away, with the key in position therein and;

the parts in unlocked position.

parts shown in section. top and front detail views Fig.3 is a side elevation of my invention setup, with. Figs; 4 and 5 aref of aportion of the 3 locking mechanism designed to prevent tam pering with the look by unauthorized persons, and Fig; 6 is an outer side elevation of Like numerals of I parts in all the figures of the drawings.

the lock with which i vReferringto the drawings, 1 represents af wall, post,( )r other stationaryobject, and 2% the backing piece or plate of my. invention,

whichis bolted or otherwise rigidly secured;

to said'wall or post and has its perimeter 'formedwit'h an outwardly-projecting flangeg 2 andlshaped, 'as-shown'in the drawings, to: receive the operative partsofthein'vention. Removably secured to theouterf face. of the i down, as shown in Figs. 2 an v I end of-jthe' finger" 6 is pivoted a point 6 which is adapted-to be swung outwardly to ed by the L{ or other object 7 tertherewith by Patented July 31, 1906;

backing plate by meansjhereinafter d= f TENT OFFICE scrlbed, isthe plate 3 5 to which the operative parts ofimy in Figs. land 2, and thus made removable with 'said plate from the backing-plate Projecting. edge of the. backing-plate 2 in a plane there= with is the arm 4, which has its lower'and Q.

65 I of said-pla'te; Snugly mounted side edges formed with acontinuation of the flange 2 within" the groove or channel 4"? in the arm 4 horizontal portion from s'aidarm and-its upperend rigidly se cured inany suitable manner tothe face of the upper end of the L member 5, it is formed a'portion of its length witha dovetailed groove 5*, in which is reciprocally mounted the plunger 6' of the lock, which invention are attached, as shown downwardly from the lower Q is the Lshapedarm 5, which hasits foot or I projecting at right angles the plate 3 at its lower edge. Beginning at terminates at its=1ower1end in the Lrsha ed finger 6 the free end of which is adapte to.

register with a depression 5' portion ofl the member 5 and toseat therein when the plunger andlfinger permit the insertion within the space bound.-

member 5 and finger 6 of atire oot ofthe member 5'and point'6 when the plunger and finger are raised'on in unlocked position. I

I The loweringof theplungere prevented by reason of a lug 6 on its forward 1 face engaging the upper edge ofthe'trans versel y-disposed member 8, which is mounted to' have a longitudinal reciprocatory movement within thetwo bosses the plate 3 at eachside forced down. to locked pressure.

position by ncternal The left-hand side of the notch and the contiguous upper edge of the lug-6 I are pressed At-th'efree parted to the member s, which 1n thehorizontal to be' locked, which is;of; greater thickness than the spacebetween the l I land 2) which is normally-out position shown in to pass below thesame as the plunger 6 and connected -fing'erare the member 8.

are correspondingly beveled to permit said lug in its raising movement to force the member 8 to the left, and thus allow the lug to pass through the notch.

To effect a proper movement of the member 8 from without the casing of my device, as it may be desired to lower the plunger 6 and attached finger to look a wheel or other object to the foot of the L member 5, I provide a coin-controlled mechanism, as shown at the left of the plunger. A coin of the proper weight and size is deposited in the coin-chute 9 through a slot (not shown) provided in the side of the cover or outer casing 10, which is bolted or otherwise secured to .the plate 3 over the operative parts of the mechanism and has its rim seating snugly Within the flange 2 of the backing-plate 2. As the-coin leaves the lower end of the chute 9 it drops into a coin-receptacle 11, which is mounted at the end of the long arm of the lever 12 and has its lower portion tilted slightly outwardly, so that its back is not in exact parallellism with the plate 3, and its lateral orside flanges 11*? cut away at top and bottom, the upper cut portion being of suitable Width to allow the coin to pass therethrough, while the lower portion is more restricted, as shown. The lever 12 is pivoted at 12 to the plate 3 and terminates at its inner end in the short arm 12 which is adapted to project within a notch 13* in the lower end of the oscillatory member 13, which is pivoted at 13 to the plate 3. An arm 13 projects laterally from the member 13 toward the chute 9 and has a weight 13 mounted at its outer end to act as a counterbalance for the lever .12 and normally retain the coin-receptacle elevated directly under and in contact with the lower end of the chute 9. The member 13 has connection with the contiguous end of the movable locking member 8 through the mediu of the pivotally-connected links 14, thus causing an oscillation of the member 13 to impart a reciprocatory movement to It will thus be seen that as a coin drops into the receptacle 11 from the chute 9 its weight will overbalance the weight 13 and cause the outer end of the lever 12 to be lowered, thereby imparting an outward oscillation to the member 13 and a .movement of the locking member 8 sufficient to draw the notch therein in alinement with the lug,6. The parts remain in this position until the lower end of the lug 6 on the descending movement of the plunger 6 comes in contact with and causes an oscillation of the lever 15, which is pivoted at 15 to the plate 3 and has its opposite end in loose engagement with the coin-extracting slide 16. The coin-extractor 16 is mounted within and has its movement guided by the guide member '16, which is secured to the plate 3 and is disposed in the arc of move ment of the coin-receptacle 11. The extractor has its outer edge beveled or tapered toward its upper end to adapt said upper end to extend under the connected portion of the receptacle 11 and its gradually-thickening portion to project through an opening or cut-away portion in the lower p art of the receptacle in an intersecting plane therewith, as shown in Fig. 2, thus causing the lower edge of the coin to be forced outwardly from engagement with the side flanges 11 of the receptacle and permitting it to slide along the extractor 16 and drop within the removable coin-receiving box or receptacle 17, which is shown by dotted lines in Fig. 2. As soon as the coin is released from the receptacle 11 the lever 12 and members 8 and 13 are actuated to return to their normal positions by the counterbalance 13 The mechanism employed for locking the plunger 6 and attached finger in lowered. or locked position comprises the bell-crank lever or lifting-finger 18, which is pivoted at 18 to the plate 3 and has the end of its long arm loosely projecting within an opening 6, provided transversely in the upper end of the plunger 6 and the end of its short arm connected to the horizontally-movable block 19 through the medium of the pivotal link 18". The block 19 is mounted for movement in the horizontal leaders or guides 20, which project from the face of the plate 3, and is spaced a suitable distance from said plate to enable the short arm of the lever 18 to project between their contiguous faces, a slot (not shown) being provided in the outer end .of the lower guide or leader 20 for that purpose. The lever or lifting-finger 18, block 19, and plunger 6 are actuated to normally, remain or move to the positions shown in Fig. 1 by means of the spring 21, which is centrally coiled about the pivot of said lever or in substantial axial alinement therewith and has its ends crossed and one fixed. at 18 to the long lever-arm and the other fixed to a stud 22, projecting from the forward edge of the upper guide or leader 20.

Secured to the plate 3 at the left or inner end of the leaders 20, as shown in Figs. 1, 2, 4, 5, and 6, is a rectangular casing or frame 23, which has the side thereof facing the leaders left open. Mounted for horizontal reciprocal movement within this frame are a plurality of superimposed plates 24, which are capable of independent movement toward and away from the inner ends of said leaders. These plates have their inward movements limited by the cars 24 thereon acting as stops which coact with the contiguous edge 23 of the front side of the frame 23, as shown in Figs. 2 and 5.

The ends of the leaders or guides 20 adjacent to the casing or frame 23 are partially cut away, as shown at 20 in Fig. 4, and projecting from these cut-away portions are the upper and lower studs 22 and 22, re-

in longitudinal alinement with the block 19 is a tumbler 27, which has projections formed notch 19*,provided near the inner end of the block 19 in its upper or lower'edges, as the case may be, when said block is moved to the left a predetermined distance by the lowering movement of the plunger 6. The ends of .the tumblers 27 are caused to be oscillated out of the path of the. block 19 on the inward movement thereof by reason. of the beveled. corners of said block coming in contact with the projections on the tumblers. When the block 19 is in the position shown in Fig. 1, the tumblers 27 each have, their inward movement limited by a lip 27 thereon en gaging the contiguous portion of the leaders or guides 20. At the end of each tumbler adjacent to the casing or frame 23 isformed -a finger 27 which projects in the path of movement of and a'buts laterally against the inner edges of a portion of the plates 24, as the combination of the lock may require, thus causing an inward movement of the plates to impart, an outward oscillatory movement to the tumblers in opposition to the springs 28 and to disengage the projections thereon from the notches in the block 319, which unlocks and permits the plunger 6., lifting-finger 18,

and block 19,actuated by the spring 21, to

' return to their normal or unlocked positions,

are moved from without the inclosing casing as shown in Fig. 1.

The proper. combination of the plates 24 or cover 10 by means of a fiat rectangular key-29, which has its inner end formed with a series of arbitrarily-arranged pins or projections 29 of varying lengths, which are adapted'to pass through alining apertures in the vertical plate 25 and have contact with the outer ends of the plates 24, coacting with .the tumblers 27, orseat within sockets of varying depths therein, whereby an inward pressing of the key imp arts-the desired movement to theproper plates 24. For the purpose hereinafter described the key 29 is prevented from withdrawal from the lock except when. the plunger is lowered and the several parts in locked position by reason of a spring-pressed dog 30 being mounted on the stud 22 and having its hooked end normally retained in engagement with a notch 29 in the lower edge of said key. This dog is caused to be released from engagement with thekey 29 on the inward or looking movement of the block by reason ofthe rearwardlyprojecting finger 30 thereon being engaged by a pin 30 or cam-surface formed on the inner side of said block, as shown in In order to provide a safeguard against the lock being tampered with or unlocked by per sons not-holding a key therefor, I pivot an.

spectively. Mounted 'on each of these studs auxiliary tumbler 31 to the upper guide or leader 20 at 32 and form a projection 31 thereon, adaptedto project through an opening or slot in the leader and be thrown by the "action of a spring 33 into engagement with termediate of sai end and the proj ection31 The tumbler 31 is.

with a slot or notch 31?. normally held elevated with the projection 31 thereon out of engagement with the I notch 34in ithe block 19 by means of a hori zontally-oscillatory member'35, which is pivoted at 35? to the lower guide or leader 20 and adapted tohave its enlarged face in contact with the inner ends of the plates 24 not included in the lockingcombination or having contact with the tumblers 27. When the member 35 is in normal position, as shown in Figs. land 2 and by dotted lines in Fig. 5, its upper reduced end is in engagement with the under surface of the tumbler 31- and re- .tains it in elevated position.

v Should any of the plates 24 not engaging the tumblers 27 be pushed inwardly by a person tampering with the lock, the member 35 would be moved on its pivot to the position shown in Fig. 5, with its upper reduced end in register with the slot or notch 31 in the tumbler 31, thus permitting said tumbler to be moved by the action of the spring 33 until its projection 31 engages the notch 34 in the block 19.

When the auxiliary tumbler 3 1 has been thus thrown into engagement with the block 19, the parts may be unlocked by a special key 36,. provided for that purpose, or the plate 3 and attached parts may .beremoved from engagement with the backing-plate 2, as hereinafter described, to permit an ordinary key to beinsert ed 'in the keyhole 37 through the plate 3 and turned to throw the member 35 back to its normal position, and thus elevate thetumbler 31 out of engagement with the block 19 after which the tumblers 27 may be released therefrom in the usual manner.

The key 36 is shown in Figs. 2 and 5 and comprises a. hollow-rectangularmember similar in shape and size to the key 29 and formed at itsinner end with pins 36 similar to those of said key 29. Mounted to have lateral movement within the hollow portion of the key is a bar 36 which has its outer end made rigid to a grip 36, adapted to be moved laterally of theend of the key and its inner end formed with a laterally-projecting pin 36 which is normally retained within the body of the key by one or more contraction springs 36, acting on the bar'36 One of thepurposes of the key 26'is to efe feet a release, of the auxiliary tumbler 31 from engagement with the block 19, which cannot be accomplished by the key 29. When used in this connection, the key 36 is insertedin the lock with the pins 36* thereon in contact with the same plates 24 as are operated on by the pins of the key 29 and the pin 36 carried by the movable bar 36 projecting upwardly in position to have contact with the pin 31 on the tumbler31. The bar 36 in the key is now moved upwardly to cause a shooting or outward movement of the pin 36 sufficient to engage the pin 31 and raise the tumbler 31 from engagement with the block 19. As the tumbler 31 is raised the key is pushed in to effect a release of the tumblers 27, thus unlocking the block 19 and permitting it to return to normal position. When the pin 36 is in extended position, said pin, the bar 36*, and grip 36 assume the positions relative to the key-body 36. (Shown in the lower right-hand corner of Fig. 2.)

In order to prevent additional strain on the block 19 and tumblers 27, due to an up ward pressure on the plunger 6 and attached finger when the parts are in locked position, as shown in Fig. 2, I form a series of teeth 18 at the end of the long arm of the lifting-finger 18, which are engaged by corresponding teeth 18 on the lower surface of the opening 6 as the plunger 6 is raised independently of the lifting-finger 18.

An antifriction-roller 38 for contact with the inner surface of the casing or cover 10 as the plunger is raised or lowered is mounted in suitable bearings at the upper end of the plunger 6 and is adapted to prevent a bind ing of said plunger within the dovetailed groove in the guide member due to lateral pressure being exerted on the finger 6 as it is forced down.

At the lower right-hand corner of the plate 3 is secured a device for locking the plate 3 to the backing-plate 2. The locking elements of this device comprise a spring pressed bell-crank lever 39 and notched boss 40, which latter projects from the face of the backing-plate 2 through an aperture 11 in the plate 3 and is engaged by the horizontal arm of said lever 39, as shown in Fig. 3. To effect a release of the lever 39 from the boss 40, I insert the end of the key 36 through a slot in the under side of the cover and into the box 42, which is mounted on the plate 3, with the pins 36 thereon projecting through registering apertures in the upper end of said box and the longer ones in engagement with the end of a second box 43, that is mounted over and adapted to have a vertically-reciprocatory movement on said first box 42, as shown in Fig. 2. As the key is inserted the box 43 is raised against the tension of the springs 43 until the pin 36 in the key comes in alinement with an aperture in the side of the inner box 42 adjacent to the vertical arm of the lever 39, the said aperture being uncovered by the raising of the box 43. The release of the catch 39 from the boss 40 may now be effected by moving the bar 36 in the key to the left, so that the pin 36 passes through the aperture in the box 42 and engages and causes the catch to be oscillated out of engagement with the boss, as shown in Fig. 2.

The operation of my invention is as follows: The normal position of the several parts of the mechanism is as shown in Fig. 1, the plunger 6 and attached finger being elevated or in unlocked position and the key 29 locked against withdrawal from the look by reason of the dog 30 engaging the notch 29 in said key To effect a lowering or locking movement of the plunger 6 to enable an object to be locked to the foot of the member 5, a coin of the proper weight is dropped into the chute 9. As the coin falls from the chute into the receptacle 1] its weight overbalances that of the weight 1.3 on the member 13, thus causing a lowering of the long arm of the lever 12 and imparting oscillation to the member 13 and a longitudinal movement to the member 8 sufficient to move the notch therein in register with the lug 6 on the plunger 6. The plunger may now be lowered to locked position. Near the limit of lower movement of the plunger the lug 6 thereon comes in contact with the lever 15 and causes an, upward movement of the coinextracting slide 16, which engages and emits the coin from the receptacle 11, thus freeing it of its load and permitting it to be returned to its normal elevated position by the action of the counterweight 13. As the plunger 6 is lowered the lifting finger 18 is drawn down against the tension of the spring 21, thus causing the block 19 to move to the left and be engaged and locked by the tumblers 27. As the block 19 is engaged by the tnm blers 27 the dog 30 is freed from engagement with the key 29, thereby permitting the re moval of the latter from the look by the person who deposited the coin, which he carries until he wishes to release the locked article from the apparatus. The release is accom plished by inserting the key within the receiving-slot therefor with its pins 29 proj ecting within the apertures in the plate 25 in contact with the outer ends of the proper plates 24 contained in the lock combination. As the key is pressed inwardly the plates 24: are likewise pressed against and cause a release of the tumblers 27 from engagement with the block 19, thus permitting a return of the block 19, lever 18, and plunger 6 to their normal unlocked positions, due to the action of the spring 21 on said lever. When it is desired to remove the plate 3 and attached parts from the backing-plate 2, the key 36, which is left in charge of some one near where the apparatus is mounted, is inserted within the box 42 and manipulated, as

engagement with the notch in the boss 40,

after Which the operative parts -may be removed. 7 v

[It is obvious that such changes in the form, proportion, and

minor details of arrangement and construction ,oftheparts-as may fairly fall within the scope of my invention be made withoutdepartingfrom' the spirit or sacrificing any of the advantages t ereof.

i or bolt,

I While I have shown and. described both the lock and the coin-controlled mechanism by which the lock in its present arrangement I 5 is made operative,-I do not wish to confine myself to the use of this mechanism in connection with my look, as other means for releasing the plunger=6 might be employed.

Having thus describe my invention, what I claim as new, and desire to secure by Letters Patent, is I f 1. The combination in a lock, of a bolt or plunger having an opening in a' portion thereof, said opening. having one side provided with teeth, a lever having one end in loose engagement with the openmgin the bolt or plunger and provided with teeth for engagin the teeth in said opening when an inward pressure is applied to the bolt or plunger, and mechanism for locking the lever and bolt or plunger in one position of movement,

2. The combination in a'lock, of a plunger a separate reciprocatory element, a lever having one arm in connection with the plunger or bolt and its other arm connected to said element whereby they are caused to have dependent movement, means for retaining said parts in locked position, means for releasing said means to permit an unlocking movement of said parts and means for causing an automatic return of the plunger or bolt and locking parts to normal or unlocked position whenreleased.

3. In a lock, a bolt or plunger, a lever having one arm in connection with said bolt or plunger, a sliding member having connection with the other arm of said lever, one or more tumblers for engaging and retaining said memberin one position of movement, means coacting ith said tumblers adapted when moved to cause their release from said member to permit a movement thereof and means for causing an automatic return of the parts to position when said member is released by the tumblers;

4- In a lock, a bolt or plunger, a movable block, means for imparting movement from one to the other of said elements, one or more tumblers for engaging and retaining said block in one position of movement, a plurality of movable members mounted to have contact with said tumblers and adapted when moved to cause a release of the tumblers from engagement with said block.

5. In a look, a bolt or plunger, a movable one to the other of said and means for effecting a return connected tion. r i

6. In a lock, an L member, a

of said block'an plunger.

for coacting with the foot of said member the plunger ing a retraction of the ment is released. a u

7. In a lock, the combination with a recippos1tion of movement, a plurality of plates cause a release ofthe tumblers from said'element to permit. a movement thereof.

able element, of a series of tumblers mounted in position to have engagement with and rement, a series adjacent tosaid tumblers with a portionin and means movable by a movement of said movable member, of mechanblo ck in one position of movement, means for releasing said tumblers from said engagement, means independent of said releasingmovably mounted adjacent to said tumblers with a portion in contact therewith, means i I forimparting movement to said plates to I.

8. In a lock, the combination with a movengagement therewith, a key for imparting movement to said members to cause a move- 1 ment of said tumblers to release said element, 1

element and having engagement with said parts to normal or unlocked posi I guided by said member and havingja finger j when saidfplunger'is-in extended position, a sliding element, a lever connecting said phinger and element whereby a movement of one. is imparted to the other, mechanism for locking said element against movement when is extended, and means for Causv i plunger when-said ele- "'1 roc atory' element, of a series of tumblers for engaging and retaining said element in one tainsaid element in one position of move-V of movable members mounted IOO,

amow

bolt, and means for connect- 7 said member in one position is 'in locked position, said element having a fixed pivot. v

10. In a lock, the combination with a movable locking member, of one or more tum- J blers for'locking said member in one position of movement, a plurality of movable plates,

a portion of which have engagement withw and are adapted when moved lease of the tumblers from said member, an auxiliary tumbler mounted to ment with said member, and a have engagemovable eleto cause a re 1 ment normally positioned to retain said auXilliary tumbler out of, engagement with said member and movableby a movement of the plunger and latter means in one position of notch therein in registration with the lug to an opening in its inner end formed with .the other arm of the lever, and means for secting that of the bolt or plunger, a bellcrank lever connecting said bolt or plunger and said member for causing them to move in unison, means for locking the movable member to retain the bolt or plunger in eX- tended position, and mechanism for locking the bolt or plunger in inclosed or unlocked position.

14. In a lock, a backing member, a plate removably secured to said backing member and having a downwardly and outwardly disposed projection extending from one side thereof, a plunger guided in its movement by said projection and having a finger projecting therefrom adapted to coact with the outj wardly-dispos: d portion of the projection, a movable block, means connecting said plunmember having l ger and block for imparting a movement infrom one to the other, one or more tumblers ternal teeth, a lever having one end loosely for engaging and retaining said block in one inserted in said opening whereby an oscillaposition of movement, means for causing a tion thereof imparts movement tothe bolt, release of said tumblers, and means for norsaid lever being provided with teeth to coact mally retaining the plunger and block in unwith the-teeth on the bolt when an inward locked positions. pressure is exerted on the bolt, means for In testimony whereof I have hereunto normally retaining said lever in one position, signed my name to this specification in the a movable element having connection with j presence of two subscribing witnesses.

locking said element in one position of move- TONIUS POLLMANN' plates not engaged by said first-mentioned tumblers to permit the auxiliary plunger to engage said member.

11. In a lock, a reciprocatory plunger having a lug thereon and an L-finger projecting laterally therefrom adapted to coact with a fixedobject when the plunger is lowered, a member disposed in the path of said lug and provided with a notch normally out of register with said lug, means for causing a move- I ment of said member adapted to place the permit a lowering of the plunger, means for effecting a return of the plunger to normal position, and mechanism for locking said their movement.

12. In combination, a bolt ment. Witnesses 13. In combination, a bolt or plunger, a A. WIESS, member having its plane of movement inter- J AS. SIER.

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