US995417A

US995417A - Lock.

Info

Publication number: US995417A
Authority: US
Inventors: John Straka; Rudolph Lewis
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-09-26
Filing date: 1910-09-26
Publication date: 1911-06-13
Anticipated expiration: 1928-06-13

Description

Patented June 13, 1911.

' A TTORNEY.

J. STRAKA & R. LEWIS.

LOOK.

APPLICATION FILED SEPT. 26, 1910.

MIWVWI S JOHN STRAKA AND RUDOLPH LEWIS, OF KANSAS CITY, MISSOURI.

LOCK.

Specification of Letters Patent.

Patented J nne 13, 1911.

Application filed September 26, 1910. Serial No. 583,824.

To all whom it may concern:

Be it known that we, JOHN STRAKA, a citizen of Austria, and RUDOLPH LEWIS, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Locks, of which the following is a specification.

1 (1)ur invention relates to improvements in The object of our invention is to provide a lock which is simple in construction, cheap to manufacture and which is diificult to pick.

The novel features of our invention are hereinafter fully described and claimed.

In the accompanying drawings illustrative of the preferred form of our invention, Figure 1 is an elevation of one side of the lock, parts being broken away. In this view the bolt is shown in the locked position. Fig. 2 is an elevation of the other side of the lock, parts being broken away and the bolt being shown in the unlocked position. Fig. 3 is a vertical section on the dotted line ab of Fig. 4. Fig. 4 is a vertical section on the dotted line 0-d of Fig. 1. Fig. 5 is a side elevation of the key employed for manipulating the lock. Fig. 6 is a side View of one of the tumblers. Fig. 7 is a top view of the locking bolt.

Similar reference characters denote similar parts.

The drawings illustrate our invention applied to an ordinary form of mortise lock of which 1 denotes the body of the casing to which is secured in the usual manner by a screw 2 a cover 3. The upper part of the casing may be provided with a chamber 4 in which are contained, if desired the ordinary latch bolt 5 together with the mechanism for operating it.

The body 1 and cover 3 are respectively provided with parallel portions or .walls 6 and 7 which serve as partitions for dividing the lower part of the easing into one inter mediate and two outer compartments denoted respectively by 7 8 and 9. The outer compartments are respectively closed by two

covers

10 and 11 which serve as outer walls and which are secured to the partitions 6 and 7 respectively by screws 12 and 13. Slidably mounted in the intermediate compartment 7 is a locking bolt 14 which is provided at opposite sides with horizontal outwardly extending projections 15 which extend through slots 16 provided one in each partition 6 and 7. The partitions 6 and 7 are respectively provided on their outer sides with two cylindrical projections 17 on which are respectively pivoted in the chambers or compartments 8 and 9 two tumblers 18 of the usual construction and function, and which are provided each with a slot 19 the lower side of which is provided near its opposite ends with

recesses

20 and 21 which are adapted to receive therein the adjacent projection 15 of the locking bolt 14 for holding the bolt in the locked and unlocked positions. The lower edge of the bolt 14 is provided with the usual notch 22 for receivjpg the bit of a key employed to move the The outer sides of the partitions 6 and 7 are provided with bosses 23 having screw threaded holes for receiving the screws 12 and 13 and which have respectively secured to them one set of ends of a pair of springs 23, which have their other set of ends bearing respectively against the under edges of the tumblers 18 for forcing said tumblers into engagement with the projections 15 of the bolt 14. The outer sides of the partitions 6 and 7 are provided respectively with two bosses 24, preferably circular, and preferably extending to a position almost in contact with the inner sides of the

outer walls

10 and 11. The partitions 6 and 7 are provided with

keyholes

25 and 26 disposed so as to register with each other and respectively partially dividing the bosses 24, as shown in Fig. 4. The outer walls or covers 10 and 11 are also provided with

keyholes

27 and 28 which register with the

keyholes

25 and 26.

In Figs. 4 and 5 is best shown the form of key adapted to be employed to operate the bolt 14. This key is provided with a stem 29 having a bit which is provided with two wards 30 adapted, when the key is placed in the keyholes, as shown in Fig. 4 to receive therein the partitions 6 and 7 which serve as wards. The wards 30 are provided each with lateral recesses 31 adapted to respectively receive the bosses 24 so as to permit the turning of the key. The wards 30 divide the bit into an intermediate arm 32 and two outer arms 33. The arm 32 is adapted to be turned in the compartment 7 and engage with the bolt 14 in the notch 22. The arms 33 are adapted to be turned in the compartments 8 and 9 and respectively engage and operate the tumblers 18 to release the projections 15 from the

recesses

20 and 21 to permit the unlocking and locking movement of the bolt 14: actuated by the arm 32. 1 In the operation of the invention, the key is inserted in the

keyholes

25, 26 27 and 28, as shown in Fig. 4. If the bolt 14L is in the unlocked position shown in Fig. 2, the key is turned to the right, viewed in Fig. 2, thereby causing the arms 33 to swing the tumblers 18 so as to release the projections 15 from the recesses 21. Following this the middle arm 32 enters the notch 22 and forces the bolt let to the locked position shown in Fig. 1. Continued turning of the key in the same direction permits the arms 33 to pass from engagement with the tum blers 18 so that the projections 15 enter the notches or recesses 20, thereby holding the bolt it locked.

By locating the tumblers 18 at the outer sides of the partitions 6 and 7 and by providing the outer sides of said partitions with the bosses 2%, and by providing the two outer covers or

walls

10 and 11, the lock is rendered extremely difficult to pick.

lVe do not limit our invention to the structure shown and described, as various modifications and changes in construction within the scope of the appended claims may be made without departing from the spirit of our invention.

Having thus described our invention, what we claim and desire to secure by Letters Patent, is

1. In a lock, a lock casing having front and rear walls and two partitions parallel with each other and with said walls, and which with the walls :torm three compartments, the two partitions each having a longitudinal slot, and the partitions and front and rear walls having keyholes registering with each other, a longitudinally slidable bolt mounted in the middle compartment and provided at opposite sides with two projections which extend respectively through the slots in the partitions, and two tumblers mounted respectively in the two outer compartments and respectively engaging said projections for holding the bolt locked and unlocked.

2. In a lock, a lock casing having front and rear walls and two partitions parallel with each other and with the said walls, the partitions with the walls forming three compartments, the partitions each having on its outer side a boss, each partition having a,

longitudinal slot, and the partitions and front and rear walls having key holes which register with each other, the key holes in the partitions partially dividing said bosses respectively, a longitudinally slidable bolt mounted in the middle one of said compartments and having at opposite sides projections which respectively extend through said slots into the outer compartments, and two tumblers mounted respectively in said outer compartments and respectively engaging said projections for holding the bolt locked and unlocked.

In a look, a lock casing having two parallel walls each having a slot, the walls having keyholes which register with each other, a slidable bolt located between said 1; ls and having two projections respectively extending through said slots, and two lers located respectively at the outer said walls and respectively engaging s' l projections for holding the bolt in the hacked and unlocked positions.

l a look, a lock casing having two lel walls each having a slot, the walls 1g key holes which register with each each wall having on its outer side a boss which is partially divided by the key hole in said wall, a slidable bolt located between said walls and having two projections respectively extending through said slots, and two tumblers located respectively at the outer sides of said walls and respectively engaging said projections, for holding the bolt locked and unlocked.

$3. In a lock, a lock casing having two parallel walls each having a slot and each serving as a ward, the walls having key holes which register with each other, a slidable bolt mounted between the walls and having two projections extending respectively through said slots, two tumblers located respectively at the outer sides of said walls and respectively engaging said projections for holding the bolt locked and unlocked, and a key insertible in said keyholes and provided with a bit having two wards for receiving respectively the wards of the casing, the wards in the bit dividing the bit into two outer and intermediate arms for respectively operating the tumblers and the bolt. 7 V

6. in a lock, a lock casing having two aarallel walls each having a slot and each serving as a ward and having onits outer side a boss, each wall having a keyhole partially dividing the boss on said wall and registering with the keyhole of the other wall, and each wall having a slot, a slidable bolt located between said walls and having two project-ions respectively extending through said slots, two tumblers located respectively at the outer sides of said walls and respectively engaging said projections for holding the bolt locked and unlocked, and a key insertible in said keyholes and provided with a bit having two wards for respectively receiving the wards of the easing and adapted to respectively receive said r t sses, the wards in the bit dividing the bit into two outer and intermediate arms for respectively operating the tumblers and the bolt.

'4'. In a lock, a lock casing having front and rear walls and two parallel partitions with form three compartments, the partitions serving as wards and having each a slot, the partitions and front and rear walls having keyholes which register with each other, a bolt slidably mounted in the middle compartment and having two projections respectively extending through said slots, two tumblers mounted respectively in the outer compartments and respectively engaging said projections for holding the bolt locked and unlocked, and a key insertible in said keyholes and having a bit provided with two wards for respectively receiving said wards of the casing and dividing the bit into two outer and one intermediate arms adapted to respectively enter the outer and middle compartments for respectively operating the tumblers and the bolt.

8. In a. lock, a lock casing having front and rear walls and two parallel partitions which form three compartments, the partitions serving as wards and having each a slot, the partitions and front and rear walls having keyholes registering with each other, each partition having on 1ts outer side a boss partially divided by the key hole in said partition, a slidable bolt mounted in the compartment between the partitions and having two projections respectively extend- 30 and a key insertible in said keyholes and 35 having a bit provided with two wards for respectively receiving the two partitions and the bosses thereon and dividing the bit into one intermediate and two outer arms adapted to respectively enter said compartments respectively for respectively engaging the two tumblers and the bolt for operating the same.

In testimony whereof we have signed our names to this specification in presence of 45 two subscribing witnesses.

JOHN STRAKA. RUDOLPH LEWIS.

WVitnesses:

E. B. I-Iousn, FLORENCE M. VENDIG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.