US1221534A

US1221534A - Lock.

Info

Publication number: US1221534A
Authority: US
Inventors: Mathias Halvorson
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-12-14
Filing date: 1916-12-14
Publication date: 1917-04-03
Anticipated expiration: 1934-04-03

Description

M. HALVORSON.

LOCK- APPLICATION FILED DEC. I4. 1916.

1 ,2% 1,53% Patepted Apr. 3, 1917.

INVENTOR WITNESSES ATTOR N EY lltll a 1; r nip LOCK.

Specification of Letters Patent.

Patented Apr. 3, 1917.

Application filed December 14, 1916. Serial No. 136,984.

To all whom it may concern:

. Be it known that I, MATHIAS HALVORSON, a citizen of Norway, residing at Hubbard, in the county of Marion and State of Oregon, have invented certain new and useful Improvements in Locks, of which the following is a specification.

The present invention relates to locks and is more particularly concerned with that type of lock comprising a sliding bolt which is locked in position by a plurality of slidin Fig. 1.

ing tumblers which are operated by a key insertible in the look.

It is a main object of the invention to produce a device as above described possessing simplicity and durability, the size and arrangement of whose tumblers may be varied so that various combinations may be obtained for these looks.

The features of the invention reside in the specific construction .and combination and arrangement of parts which will be later referred to in detail as the specification proceeds. It is to'be understood however, that variations and modifications in the construction may be resorted to that fall within the legitimate scope of the appended claims. 1

In the drawings which illustrate the in vention;

Figure 1 is a front elevation of the lock showing the same as applied to the usual door.

Fig. 2 is a front view of the look with the face plate removed.

Fig. 3 is an end' view of the lock looking in the direction of the arrow 0; as indicated Fig. 4 is a view taken substantially on lines 44 of Fig. 1.

Like characters denote similar and like parts throughout the specification and drawings.

Referring in detail to the drawings the lock, constructed in accordance with the present invention, preferably comprises two opposing plates '1 and 2 which are secured together in juXta-relation by sultable. fastening means, such as the bolts 3 and which provide a housing for the lock mechanism. The inner face of the plate 2, which may be termed the back plate is formed, preferably, adjacent its lower edge with a homzontally extending recess 4 which provides, when the

plates

1 and 2 are secured together, a passage way through the lock housing for the sliding bolt 5. The bolt 5 is ofsuch length as will permit both of its ends to extend beyond the passage when the bolt is shifted in its locking position. One face of 0 the bolt 5 has a suitable recess 6 therein to receive a stud 7, the recess 6 being of such length as will limit to a desired degree the shifting movement of the bolt 5 into and out of looking position. It will also be ob vious that the stud 7 prevents the withdrawal or removal of the bolt 5 from the lock housing when the

plates

1 and 2 are secured together as shown in Figs. 3 and 4.

The inner face of the back plate 2 is fur ther formed with a plurality of vertical recesses 8, disposed above the recess 4 and communicating therewith. These recesses 8 are of a substantially uniform length and are adapted to have slidably disposed therein the tumblers 9 which are preferably, but not necessarily, of a length corresponding to the length of the recesses 8. The lower ends of the tumblers 9 are adapted to engage in the notches 10, of which there are a number corresponding to the number of the tumblers 9, formed on the upper edge of the sliding bolt 5. i i

A key-way 11 is formed in the back plate 2 and extends. inwardly from one end of the housing substantially horizontally so as to intersect the recesses 8 at a point below the upper ends of the tumblers when the latter are in a position shown in full lines in Fig. 2, each tumbler 9 being suitably recessed to correspond with a key way 11 in order to permit the latter to extend through the lock housing from one end'to the 'furthermost recess 8 without obstruction when the turn blers 9 are, in the position shown in full lines in Fig. 2. It will thus be seen that when it is desired to unlock the sliding bolt 5 from its position shown in full lines in Fig. 2 and to shift it into position shown in dotted lines of the same figure, it is only 100 necessary to insert a suitable key into the key way 11 which will lift the tumblers 9 out of the notches 10 in the bolt 5.

A key 12 is adapted to be inserted in the guide-way 11 and has a multiplicityof teeth 105 or lugs 13 thereon in a number correspond ing to the number of recesses 8, and which engage the tumblers 9 at 14 when the key is lifted into the position shown in dotted lines of Fig. 2. When the key is lifted to its fullest extent all of the tumblers 9 are moved out of the notches 10 of the bolt 5,

flby a handle or finger piece of the key.

It Will be noted that after the tumblers and sliding bolt 5 have been shifted into position shown in dotted lines of Fig. 2 it will be impossible to withdraw the key from the key way-.11, this being. especially prevented by the pins 16 projecting laterally into the key-way 11 adjacent the top wall thereof.

Suitable cutout portions 17 are provided in the key to receive thepin 16 when the key is lifted in'the position shown in dotted lines of Fig; 2 so as topermit the effective liftingof all of the tumblers 9 to unlock the bolt 5. Although it is here shown as preferable to provide the sliding bolt with a number of notches corresponding to the number of tumblers and thereby prevent the withdrawal of the-key from the key-Way when the bolt is in its'effective position, it may be desired, how ever, to provide several additional notches, not shown, in the bolt so as to permit all of thetumblers to gravitate back intocorresponding notches-in the bolt and permit the keyto be likewise moved out of the path of the ins 16 and fromthe key-way 11.

To effect various combinations of locks constructed 'inaccord'ance'with the present invention, the provision of a multiplicity of tumblers as shown permits a varying arrangement of the tumblers which may be effected by varying the. width of certain of the tumblers 9 and oftheir corresponding recesses8. 7, By so varying the width of the tumblers and'their corresponding recesses there must be lilr'e'variationslin the widths of the'lugs '17 on their respective keys. Furthermore the arrangement of the pins 16 may be varied so that one or more of said pins will lie out'of alinement with certain other pin'san'd thereby necessitate the recess 7 '17 to' be of varying depths to permit-the key to be lifted'to itsfullest extent'in order to effect the lifting or shifting of all of the tumbl'ersout of the passage land notches 10.

Thus it will be manifest that by virtue of the "various"arrangements, which may be effected by varyin'g'the widths of the tumblers and the arrangement of the pin 16, that a sufficient number of combinations may be obtainedin lugs of this type as to render the same desirable. and burglar proof.

'To'lock the lock it is only necessary to lift the key 12 in a position shown in dotted lines of Fig. 2"which will lift the tumblers entirely'from the passage 41 and permit the bolt fitobeshifted in the full lines of Fig. 2, and

then by'rel'e'asing the key the tumblers together with the key will gravitate downwardly into the position shown in full lines of Fig. 2. In this position the key will meet with no obstructions and may be withdrawn from the key-way 11. To effect the unlocking of the lock, it is only necessary to insert the key into the key-way and to lift the same into the position shown in dotted lines of Fig. 2, which as will be readily understood, lifts all of the 'tumblersfrom' the passageway. land permits the bolt to be shifted into an unlocking or ineffectual position.

The front plate 1 of the lock is provided with complementary recesses 11 which together with the recess 11 provides the key- Way above referred to. However the recess 11 is reduced at the entrance to the keyway, as clearly shown in Fig. 3, to a small opening 18 which slidably receives the guiderib 19 on the key. It will be again readily seen that further combinations of the lock may be effected by varying the position of the opening 18 with respect to the keyway 11 thereby necessitating the change of position of the guide-rib 19 on the key.

For-facilitating the operation of the sliding bolt 5' a suitable handle or gripping means 20 is provided on one end thereof.

The lock may be secured at any convenient portion on a door as'illustrated in Fig. 3 so r' that an end of the sliding bolt 5 will project 90 into a keeper 21 secured to the jamb or other suitable portion of a door or like structure.

lVhat I claim: 1. A look comprising a front and back plate adapted to be secured together in juxta-relation to provide a housing for the lock mechanism, one of said plates being formed with a recess extending horizontally therethrough, and a multiplicity of vertically arranged recesses communicating with said horizontal recess, a bolt slidably disposed in said horizontal recess and having a plurality of notches formed therein, tumblers slidably disposed in said bolt for holding the latter in looking position, said housing having a horizontal key-way formed therein extending from one end thereof transversely through said tumblers, a key insertible in said'key-Way and having a multiplicity of lugs formed thereon arranged correspondingly to said tumblers, said key being adapted to be lifted in the key-way to bring 'saidlugs in engagement with the tumblers for moving the tumblers out of engagement with the notches in said sliding bolt, and a plurality of pins laterally extending into said key-way and adapted to be variably arranged therein, said key having a plurality of recesses therein to receive said variably 5 arranged pins, when the key is lifted, to perhalt the effective lifting movement of the key.

2. A look comprising a housing, a bolt slidably extending through said housin a multiplicity of tumblers slidably mounted in the housing in substantially parallel alinement, said housing having a key-way extending from one end thereof transversely through said tumblers, a plurality of projections laterally extending into said keyway and adapted to be variably arranged, a key insertible in the key-way and having a multiplicity of lugs arranged to engage said tumblers, said key being adapted to be shifted to bring the lugs into engagement with the tumblers whereby the latter are moved key having a plurality of recesses therein adapted to receive said variably arranged projections to permit the effective lifting 15 movement of the key.

In testimony whereof I aflix my signature in presence of two witnesses.

MATHIAS HALVORSON. Witnesses:

' J. J. FosMARK, Toivr DYBOAD.

Copies; of skim patent may be obtained for five cents each, by addressing the Commissioner of Patenta, Washington, D. 03