US1076822A - Coin-controlled lock. - Google Patents

Coin-controlled lock. Download PDF

Info

Publication number
US1076822A
US1076822A US1912704745A US1076822A US 1076822 A US1076822 A US 1076822A US 1912704745 A US1912704745 A US 1912704745A US 1076822 A US1076822 A US 1076822A
Authority
US
United States
Prior art keywords
coin
arm
key
plate
arms
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Willis S Farnsworth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
COIN CONTROLLED LOCK CO
Original Assignee
COIN CONTROLLED LOCK CO
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by COIN CONTROLLED LOCK CO filed Critical COIN CONTROLLED LOCK CO
Priority to US1912704745 priority Critical patent/US1076822A/en
Application granted granted Critical
Publication of US1076822A publication Critical patent/US1076822A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07FCOIN-FREED OR LIKE APPARATUS
    • G07F17/00Coin-freed apparatus for hiring articles; Coin-freed facilities or services
    • G07F17/10Coin-freed apparatus for hiring articles; Coin-freed facilities or services for means for safe-keeping of property, left temporarily, e.g. by fastening the property
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S70/00Locks
    • Y10S70/41Coin-controlled
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7441Key
    • Y10T70/7486Single key
    • Y10T70/7508Tumbler type
    • Y10T70/7559Cylinder type
    • Y10T70/7667Operating elements, parts and adjuncts
    • Y10T70/7706Operating connections
    • Y10T70/7718Intermediate

Definitions

  • Patented ct. 28, 1913 Patented ct. 28, 1913.
  • Another object is to provide n .n zittaoln ment of the above ellnrznter which is adept ed to be mounted on the face or esentcheon plete of the look Without necessitating any ⁇ while another Coin is already in the pocket.
  • Fig. 2 is n side elevation of saine.
  • Fig. 3 is e rear
  • Fig. t is n detail of the meehenisln controlled by n Coin, showing it in its normal position with :i coin in place :is just deposited.
  • Fig. 5 is :t similar View showing the parts in their operated positions.
  • Fig. 6 is n. detnil section on the line V-V of Fig. e.
  • Fig. 7 is si section on the line Vil-VV of Fig. 5.
  • Fig. 8 is t section on the line X--X of Fig. 4.
  • Fig. 9 isn section on the line Y-Y oit Fig. 5.
  • Fig. l0 is n section on line Z-Z ot' Fig. l, partly in eleiietion;
  • lil the drzuvings it. represents the fece plate or escuteheon of an ordinary look, here shown its :i look of the Yale type, in which the bolt B is' operated by n bit C on :t revolnble barrel D, the rotation of wliieh is effected by ineens of n key it ⁇ in theusunl Well-known manner. l't will be apparent, however, the-t the invention is zipplirnble 'for use on other types of looks than that here shown; the one eseentizil feature required in the look being that the key be nnreinoynvble from the look when positioned et :in angie in relation to the keyhole.
  • ein innate-tent entiire of this invention resides in providing e. ineens ⁇ for normally retain innl the key in this angular position in the loeli; ⁇ with the bolt in its retrneted position, wliieh. Ineens een be'relensed toperniit the opei'ntion oit the ⁇ look only on elle deposit Oil n. certain eoin.
  • n ze 2 is rigidly mounted 'on the bnrrel lll? the enter t il being proyided tiitli n kefl ole i i the keyhole F. rllhis l d when the key le ont die barrel .5' it :ind nrnisbeing eon-- by ineens ot eerewe'- ti ed Ote' Y, formed r.
  • rlhis plate mounted on' its lower end. rlhis plate has a Vertical edge paralleling the outer edge of the arm 5 which abuts against the pin 8.
  • the pins 8-8 thus securely hold the lower end of the arm 5 against sidewise movement, but permit of its being oscillated by the rotation of the platei2, as will be ⁇ later described.
  • the inner edge pf the lower end of the arm 4 is designed to contact the pin 8 and is held thereagainst by means of a plate spring 10, mounted on a bracket 11 carried on the escutcheon plate- A, which spring bears against a pin 12 mounted on the arm 4.
  • rllhe pin v8 thus serves to limit the inward movement of the arm 4 and also limits its downward movement, when actuated by the plate 2, by
  • the arm 4 may be rocked ,outwardly away from the pin 8 in opposition to the Mounted on the lower end of the arm 4 xis an inwardly extending plate 14, which projects over the lower end of the arm 5 and forms a coin slot between the lower ends ⁇ of the arms 4 and 5, into which the coin maybe inserted through a slot 15 formed in the escutcheon A.
  • a coin deposited in the slot 15 is designed to come to rest upon p a shoulder or abutment 16 formed on the 'inner edge of the arm 5 where it is sup- 13 so as to prevent t-he plateQ being rocked by the key E sutliciently far to allow the latter to be disposedv in its vertical position in relation to the keyhole 3.
  • the key E is prevented from being withdrawn from the lock and also blocked against movement, thereby preventing the operation of the bolt B.
  • the coin. on passing over the abutment 16 falls upon a stop shoulder 18 on the inner edge ofthe lower end of the arm 5, where it comes to rest with its opposite edge against the inner edge of the arm 4.
  • the coin G in passing over the abutment 16 releases the lower end of the arm 4 so that it moves inwardly by the action of t-he spring 10 to throw the pinv 8 into engagement with a V-shaped notch 19 formed on the inner edge of the arm 4.
  • Formed inthe escutcheon plate 'A is aperfoi-ation 20 which registers with a similar perforation 21 formed in the plate 9, when the arm-5 is in its uppermost position, so
  • the coin G when resting upon the shoulder 18 as shown in Fig. 5, may be observed through the escutcheon plate.
  • the coin G in moving downward passes below the pin 8, as "indicated in dotted lines in Fig. 5, where it isreleased from the shoulder' 18 and deposited in any suitable receptacle
  • the arm 4 in moving upward is moved out; wardly by reason Yof the inclined face of the notch 19 riding over the'pin 8, so as to permit the coin G passing bet-Ween the lower end of the arm 4 and the shoulder 18 on the 'arm 5.
  • Van opposed co-acting wedge-shaped abuty ment between which and said sliding plate a coin is adapted to be held, and means carred by the sliding plate for advancing the l coin past said abutment.
  • a coin-controlled lock the combination with a sliding latch bolt, of a key-operated barrel for actuating, ⁇ the bolt, a pair of oppositely sliding arms connected with the barrel and reciprocal thereby, means co-acting with the arms to inclose a coin pocket, said arms having a limited yielding movement toward and from each other, and means coperating with the arms by which the key is normally held against withdrawal from the barrel.
  • a coin-controlled lock ⁇ the combination-with a sliding latch bolt, of a key-operated barrel for actuating ⁇ the bolt, a pair of oppositely sliding arms connected with'thev i barrel and ⁇ reciprocal thereby, means co-acting with the arms to inclose a coin pocket,
  • said arms having ⁇ a limited yielding movement toward and from each other, means cooperating with the,VKV arms by 'which the key is normally held against withdrawal from the barrel, and means in conjunction with the arms whereby, upon deposit of the coin, the bolt may be projected into locked position and 4the key withdrawn and subsequently the bolt retracted by the key, whereupon the key assumes its normal position against withdrawal until the deposit of another coin.
  • a turnable key-actuated member a pair of arms pivoted to the ,member on opposite sides of the center, a coin pocket formed by said arms, detent means for preventing the rotation of the member until the deposit of a coin in the pocket, and release mechanism controlled by the coin.
  • a coin-controlled lock the combination of a pair of parallel arms, a pivoted member to which said arms aie attached on opposite sides of the pivotal point, means for limitingr the movement of the pivoted' member, and means controlled by a coin between said arms for permitting an increased movement of the rockable member.
  • a coin-controlled lock the combination of a pair of parallel reciprocating members, a rockable plate for reciprocating said members controlled by a key, means for supporting a coinl between said members, means for limiting the movement of said members and the rockable plate, and means whereby an initial movement ot the rockable plate will co-act with the coin to permit e an increased movement of the rockable plate.
  • a pair ot oppositely disposed reciprocating members having a limited movement toward and Yfrom each other, a push bar carried by one of said members, a cam ⁇ face upon the other of said members directed toward said push bar, a coin chute for delivering a coin edgewise between said push bar and said cani tace, and means for reciprocating said members in opposite directions to grip said coin between said push bar and said cam face to separate the said members.

Description

W. S. FARNSWORTH. G01N GONTROLLED LOCK. APPLICATION FILED JUNE zo, 1912.
Patented ct. 28, 1913.
www l Hun! a Willmann" 1N VENTOR y iiNrrnn sfrATiisj 'PAfinNT onnion.
, WILLIS s. FANNSWONTH, oNHs'AN InANCIsCo, CALIFORNIA, AssIeNOR 'I'O COIN CONTNOLLED LOCK CO., or SAN FRANCISCO, CALIFORNIA, A CORPORATION or CALFORNIA.
COIN-CONTROLLED LOCK.
noteee.
T all whom i may concern.'
Be it known that I, ilILms S. FAnNswon'rii, n Citizen of the United States, rei elevation.
Specification of Letters Patent.
Application filed .Tune 20, 1912.
siding in the city and county of San Fre-n- 1 Cisco and State ot Californie, have Invented new nnd useful .improvements in CCin-COn trolled Looks, of which the following is :il
specification.
looks, and particularly pertains to n lock in which the operation of the key vtherefor is Controlled by e Coin.
It is the object of this invention to provide 'ii Coin-Controlled look, by ineens oit which the latch bolt ot the lock will be prevented from being operated nntil the deposit of A proper token, and which is so Constructed its to admit of the key being withdrawn or thrown only on the deposit of' zt proper Coin or token.
Another object is to provide n .n zittaoln ment of the above ellnrznter which is adept ed to be mounted on the face or esentcheon plete of the look Without necessitating any `while another Coin is already in the pocket.
it.. ifni'theiobject is to eonstrnet e. Coineontrolled attachment nf'liieh will occupy n minininni ninonnt oil? spnoe. which will have :i niiniinnni nninber ot' parts end in which the ooinedmneing ineens or the ineens by wliiel'i Coin is innde etten torelease the lool-I is nieeh niiieelly find positively nettinrted. in contrndistinetion to the ordiniiry c'oi...-Contijolled nieelinniein or l ieke wherein the eoin nets sii'nply by le ontion residen in n ,ted to be ope i. er niern'is :for noi roellnble member :igziinst mote le :t the'key in iin angular position in to the keyhole of the look., seid niet 's opereble on the deposit oi.E n nein to Y, init the key being turned to throw the tout: molt und ther/r ,ter be with diinn'n.
llie in ention eoneists of the pn the Construction ond eon'ibi Mien i I :is will be hereinafter more fully deseribed ind elziiined, beting reference to the teneinpnnying driinfings, in whiehM Figure l is n' iront View ot e loeli'witb the nttnehnient'appliedy showt. bolt the Fetented Unt.. 28,1913.. serial No. 704,745.
thrown sind the key Withdrawn. Fig. 2 is n side elevation of saine. Fig. 3 is e rear Fig. t is n detail of the meehenisln controlled by n Coin, showing it in its normal position with :i coin in place :is just deposited. Fig. 5 is :t similar View showing the parts in their operated positions. Fig. 6 is n. detnil section on the line V-V of Fig. e. Fig. 7 is si section on the line Vil-VV of Fig. 5. Fig. 8 is t section on the line X--X of Fig. 4. Fig. 9 isn section on the line Y-Y oit Fig. 5. Fig. l0 is n section on line Z-Z ot' Fig. l, partly in eleiietion;
lil the drzuvings, it. represents the fece plate or escuteheon of an ordinary look, here shown its :i look of the Yale type, in which the bolt B is' operated by n bit C on :t revolnble barrel D, the rotation of wliieh is effected by ineens of n key it `in theusunl Well-known manner. l't will be apparent, however, the-t the invention is zipplirnble 'for use on other types of looks than that here shown; the one eseentizil feature required in the look being that the key be nnreinoynvble from the look when positioned et :in angie in relation to the keyhole. ein innate-tent entiire of this invention resides in providing e. ineens `for normally retain innl the key in this angular position in the loeli;` with the bolt in its retrneted position, wliieh. Ineens een be'relensed toperniit the opei'ntion oit the `look only on elle deposit Oil n. certain eoin.
lnV ceri .fing ont my present intention, n ze 2 is rigidly mounted 'on the bnrrel lll? the enter t il being proyided tiitli n kefl ole i i the keyhole F. rllhis l d when the key le ont die barrel .5' it :ind nrnisbeing eon-- by ineens ot eerewe'- ti ed Ote' Y, formed r. he elote 2" net in eenl iit the roekllhe nrins jneent to the e ee'entol rlhe erin. 5 i lower een Aetween outwardly ndingi p. end ineen-ted on the beek eeentelieonim.; the erin i lo" nnneeted to the beek the esentelieon it.;
plate 9 mounted on' its lower end. rlhis plate has a Vertical edge paralleling the outer edge of the arm 5 which abuts against the pin 8. The pins 8-8 thus securely hold the lower end of the arm 5 against sidewise movement, but permit of its being oscillated by the rotation of the platei2, as will be` later described. The inner edge pf the lower end of the arm 4 is designed to contact the pin 8 and is held thereagainst by means of a plate spring 10, mounted on a bracket 11 carried on the escutcheon plate- A, which spring bears against a pin 12 mounted on the arm 4. rllhe pin v8 thus serves to limit the inward movement of the arm 4 and also limits its downward movement, when actuated by the plate 2, by
l plate spring 10.
lao
reason of its engagement with a shoulder 13 formed on the arm 4. It'will be observed that the arm 4 may be rocked ,outwardly away from the pin 8 in opposition to the Mounted on the lower end of the arm 4 xis an inwardly extending plate 14, which projects over the lower end of the arm 5 and forms a coin slot between the lower ends` of the arms 4 and 5, into which the coin maybe inserted through a slot 15 formed in the escutcheon A. A coin deposited in the slot 15 is designed to come to rest upon p a shoulder or abutment 16 formed on the 'inner edge of the arm 5 where it is sup- 13 so as to prevent t-he plateQ being rocked by the key E sutliciently far to allow the latter to be disposedv in its vertical position in relation to the keyhole 3. By thisconstruction the key E is prevented from being withdrawn from the lock and also blocked against movement, thereby preventing the operation of the bolt B.
In the operation of the invention when it is desired to ythrow the bolt B and withdraw the key E, a token of a certain diameter or denomination is vdeposited in the slot 15, where it comes to rest upon the abutment 16 between the lower ends of the arms 4 and 5, as before described and as shown in Fig. 4.' The shoulder 13 being spaced a short `distance abovethe pin 8 will admit of a limited downward movement of the arm 4 and a consequent slight rotat-ion of the plate .2. This movement 'of the plate 2 is effected by turning the key E, after Athe coin G is deposlted, 1n such -a manner as to move the arm 4 in a downward direction and the arm 5 'in an upward direction. 'The upward' movement of the arm 5, carries the coin Gr therewith so as to bring its upper edge into contact with the lower edge of the coinpusher 17 on the? arm 4. The downward movement of the arm 4 causes the member 17 to engage the coin G and move it downwardly in oppo-sition to the arm 5, causing it to press against the abutment 16- and force the arm 4 outward away from arm 5, as indicated in dotted lines in Fig. 4, so as to 'cause,the shoulder 13 to clear the pin 8. This will admit of a continued rotary movement of the key Ey and the plate 2, so as to throw the bolt B into locked position and dispose the key E in t-he vertical position and admit of its being withdrawn from the lock. In thuslocking the bolt, arm 5 moves up and arm 4 down. The coin. on passing over the abutment 16 falls upon a stop shoulder 18 on the inner edge ofthe lower end of the arm 5, where it comes to rest with its opposite edge against the inner edge of the arm 4. The coin G in passing over the abutment 16 releases the lower end of the arm 4 so that it moves inwardly by the action of t-he spring 10 to throw the pinv 8 into engagement with a V-shaped notch 19 formed on the inner edge of the arm 4. Formed inthe escutcheon plate 'A is aperfoi-ation 20 which registers with a similar perforation 21 formed in the plate 9, when the arm-5 is in its uppermost position, so
g that the coin G, when resting upon the shoulder 18 as shown in Fig. 5, may be observed through the escutcheon plate. The coin G in moving downward passes below the pin 8, as "indicated in dotted lines in Fig. 5, where it isreleased from the shoulder' 18 and deposited in any suitable receptacle The arm 4 in moving upward is moved out; wardly by reason Yof the inclined face of the notch 19 riding over the'pin 8, so as to permit the coin G passing bet-Ween the lower end of the arm 4 and the shoulder 18 on the 'arm 5. The moment the coin G is released from between the shoulder 18 and the arm 4, the latter is moved back into its normal position by means of the plate spring 10, thereby re-positioning the `pin 8 -below the shoulder 13 onl the arm 4 in such a position as to prevent the operation of the lock until another coin has been deposited.
From the foregoing it is seen that the arms 4-5 in conjunction with the escutcheon plate A and back plate 14 and shoulders 16*18 constitute in effect a slidingpocket for the coin, 'through which pocket the coin Vis advanced step by step positively; first,
when engaged by the pusher 17; 'and secondly', by the engagingof the abutment 16 -behind Athe coin, the arm 4 yielding toward and from arm 5 suiicient to accomplish the desired purpose.
Having thus described my invention, what I vclaim and desire to secure by Letters Patent is- 1. In a coin-controlled lock, the combination of a latch bolt, a barrel for reciprocating the same, a key for turning the barrel,
f ment formed on the other arm.
2. In a coin-controlled lock, the combina.- ton with a latch bolt, of a barrel connected therewith to move the bolt, a key for operating' the barrel, coin-controlled mechanism permitting of but a single complete reciprocation of the bolt on 'the deposit of a single coin, said mechanism including va pivoted plate connected with the barrel :tor sliding movement, a pocket formed with said plate,
Van opposed co-acting wedge-shaped abuty ment, between which and said sliding plate a coin is adapted to be held, and means carred by the sliding plate for advancing the l coin past said abutment.
3. ln a coin-controlled lock, the combination with a sliding latch bolt, of a key-operated barrel for actuating,` the bolt, a pair of oppositely sliding arms connected with the barrel and reciprocal thereby, means co-acting with the arms to inclose a coin pocket, said arms having a limited yielding movement toward and from each other, and means coperating with the arms by which the key is normally held against withdrawal from the barrel.
4. ln" a coin-controlled lock,`the combination-with a sliding latch bolt, of a key-operated barrel for actuating` the bolt, a pair of oppositely sliding arms connected with'thev i barrel and` reciprocal thereby, means co-acting with the arms to inclose a coin pocket,
said arms having` a limited yielding movement toward and from each other, means cooperating with the,VKV arms by 'which the key is normally held against withdrawal from the barrel, and means in conjunction with the arms whereby, upon deposit of the coin, the bolt may be projected into locked position and 4the key withdrawn and subsequently the bolt retracted by the key, whereupon the key assumes its normal position against withdrawal until the deposit of another coin.
5. The combination with a latch bolt, oit a barrel having a lug to operate the bolt, a key to operate the barrel, and coin-controlled mechanism including; a sliding coin v pocket connected with the barrel to allow the latch bolt to be operated only on the deposit of a proper token.
6. In a lock, the combination of a turnable key-actuated member, a pair of arms pivoted to the ,member on opposite sides of the center, a coin pocket formed by said arms, detent means for preventing the rotation of the member until the deposit of a coin in the pocket, and release mechanism controlled by the coin.
7. In a coin-controlled lock, the combination of a rockable member controlled by a key, a pair of parallel arms connected with said rockable member, means for limiting the movement of the rockable member, means for supporting` a coin between said arms, and means whereby the coin Will act lo permit an increased movement of the roekable member.
8. ln a coin-controlled lock, the combination of a pair of parallel arms, a pivoted member to which said arms aie attached on opposite sides of the pivotal point, means for limitingr the movement of the pivoted' member, and means controlled by a coin between said arms for permitting an increased movement of the rockable member.
9. In a coin-controlled lock, the combination of a pair of parallel reciprocating members, a rockable plate for reciprocating said members controlled by a key, means for supporting a coinl between said members, means for limiting the movement of said members and the rockable plate, and means whereby an initial movement ot the rockable plate will co-act with the coin to permit e an increased movement of the rockable plate.
10. ln ay coin controlled lock, the combination cfa pair of reciprocating members, means for reciprocating said members in opposite directions, a stop for one of said members, and means controlled by a com for renderingsaid stop ineffective to limit the movement of said member.
ll. In a coin controlled lock, a pair ot oppositely disposed reciprocating members having a limited movement toward and Yfrom each other, a push bar carried by one of said members, a cam `face upon the other of said members directed toward said push bar, a coin chute for delivering a coin edgewise between said push bar and said cani tace, and means for reciprocating said members in opposite directions to grip said coin between said push bar and said cam face to separate the said members.
ln testimony whereof l have hereunto set my hand in the presence oit two subscribing witnesses. l WLLS S. FARNSWURTH. Witnesses:
lit. B. TREAT, C. MCCULLOUGH.
llo
US1912704745 1912-06-20 1912-06-20 Coin-controlled lock. Expired - Lifetime US1076822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US1912704745 US1076822A (en) 1912-06-20 1912-06-20 Coin-controlled lock.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1912704745 US1076822A (en) 1912-06-20 1912-06-20 Coin-controlled lock.

Publications (1)

Publication Number Publication Date
US1076822A true US1076822A (en) 1913-10-28

Family

ID=3145053

Family Applications (1)

Application Number Title Priority Date Filing Date
US1912704745 Expired - Lifetime US1076822A (en) 1912-06-20 1912-06-20 Coin-controlled lock.

Country Status (1)

Country Link
US (1) US1076822A (en)

Similar Documents

Publication Publication Date Title
US999044A (en) Coin-controlled lock.
US1076822A (en) Coin-controlled lock.
US1237138A (en) Lock.
US1374908A (en) Door-locking device
US1260763A (en) Lock.
US2603335A (en) Sheetsxsheet i
US699301A (en) Combined lock and latch.
US982689A (en) Safety-lock.
US1933263A (en) Coin controlled lock
US1149990A (en) Coin-controlled lock.
US1120294A (en) Coin-controlled lock.
US1394559A (en) Coin vending-machine
US470508A (en) Coin-operated vending apparatus
US1096671A (en) Coin-controlled lock.
US1160978A (en) Lock-guard.
US638353A (en) Securing device for bicycles or other articles.
US1595747A (en) Coin-controlled lock
US1308734A (en) A corpora
US1444325A (en) Coin lock
US1055178A (en) Coin-controlled lock.
US1394475A (en) Counter for locks
US491159A (en) Combination-lock
US1027940A (en) Planooraph co
US1162121A (en) Automatic mail-pouch-locking appliance.
US2215374A (en) Coin controlled lock