US1682521A

US1682521A - Door lock

Info

Publication number: US1682521A
Application number: US740138A
Authority: US
Inventors: Huttemann Wilhelm
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-09-26
Filing date: 1924-09-26
Publication date: 1928-08-28
Anticipated expiration: 1945-08-28

Description

Aug. 28, 1928.

w. HUTTEMANN DOOR LOCK Filed Sept. 26, 1924 amt WWW.

Patented Aug. 28, 1928.

UNITED STATES WILHELM HuTTEMANN, or COLOGNE, GERMANY.

DOOR LOCK.

Application filed September 26, 1924. Serial No. 740,138.-

This invention relates to a door lock of the kind in which the inner door handle is rotatable relative to the outer one.

Door locks of this type have already become known in which the inner handle has its hollow shaft rotatably mounted on the axle of the outer handle which is coupled to an abutment ring adapted to freely rotate around the axle of the outer handle and which ring is adapted toact directly or indirectly upon the latch bolt and. to effect, according to the angular locking position of the inner handle, by rotation of the same either the locking of the spring bolt or the pulling back of this spring bolt, the angular locking position of the inner handle being caused directly by a push knob on the same. The lock can therefore be locked without key from one side of the door. For opening the same from the other side a so-called locking cylinder is provided.

Compared with this known construct on the arrangement according to the 1nvent1on consists in that the angular adjusting of the inner handle is effected directly by hand, the locking positions of the same being controlled by a locking ball arrangement on the abutment ring and follower, the inner handle freely rotatable being arranged on the axle of the outer handle in such a mannor that a pin eccentrically arranged on the shaft of the inner handle is guided in an angular groove of the axle of the outer handle and that latch bolt and elbow lever (the latter as intermediate member for the inner handle and the latch bolt) are stamped from sheet metal, the lock case being composed of two parts having projections to be 1nserted into slots of the lock cramping board and connected at the other side by means of screws. the connection between the locking cylinder and the lock case being carried out in a special manner.

In the accompanying drawing the lnvention is illustrated by way of example.

Fig. 1 shows the elevation the inner parts of a door lock comprising two locking cylinders.

Fig. 2 is a cross section on line IIII of Fig. 1.

Fig. 3 is a cross section on line III-III of Fig. 1.

Fig. 4 is a cross section on l1ne IV -IV of Fig. 1.

Fig. 5 is a cross section on line V-V of Fig. 4.

Fig. 6 shows in elevation the pivot pin of the locking cylinder.

Figs. 7 and .8 show the abutment ring in two views.

Figs. 9 and 10 are two different views of the follower.

Figs. 11 and 12 are two different views of the elastic ring for the follower.

The door lock consists of the lock case composed of two

parts

1 and 2 attached by means of

projections

3, 3 in the lock cramping bord 4. The projections 3, 3' of the part 1 are riveted on the cramping bord 1, the corresponding projections of part 2 engaging loosely with the incisions of the cramping bord so that the lock cases can be taken to pieces. The two parts of the lock case are securely connected the one with the other by means of a sleeve 5. The quadrantshaped rims of the parts of the lock case which register accurately with one another when the parts of the lock case are being locked together provide the required hollow space for the accommodation of the several elements of the lock.

These elements are :-the latch bolt 6, the

angle lever 7, the abutment ring 8 with an abutment arm 9. the follower 10, the elastic ring 11, the spring 12 of the latch bolt, the

locking cylinders

13 and 1 1 for the inner side and for the outer side of the door, the dog 15 of the locking cylinders and the clamping bolt 16 serving as safety device for the locking cylinders.

The latch bolt 6 can be operated on the one hand by the handles and on the other hand by the locking cylinders. In the first case the arm a of the follower 1O acts upon the angle lever 7 which is made from sheet iron in the special shape shown in Figs. 1 and 2. The angle lever 7 is mounted on a short axle 17. The angle lever Thas an abutment 18 designed to come in contact with the cramping bord 4t and an arm 19 designed to act upon a projection of the latch bolt 6. The latch bolt 6 is movably guided in an aperture of the cramping bord 4 and on an abutment 20. \Vhen, by means of a handle, the follower is being rotated to the right the arm a of the follower acts upon the angle lever which pivots around the axle 17, the arm 19 pulling the latch bolt 6 back. The spring 12 of the latch bolt, which bears on the one hand against the abutment 20 of the lock case and on the other hand against the abutment 21 of the latch bolt brings the latch bolt back to the position of rest. The pulling back of the latch bolt. 6 by thelocking cylinder is effected through the intermediary of the dog 15 which acts upon an abutment 22 of thelatch bolt so that, when the pivot bolt 15 is turned to the right in the locking cylinder with the aid of the key the latch bolt is pulled'back. This movement can be executed with the aid of the locking cylinder 13 and of the looking cylinder 14, with which object in view the dog 15 is independent of the

rotatable cylinders

23 and 21 of the locking cylinders.

The pulling back of the latch bolt by means of the inner handle is effected in a similar manner as by means of the outer handle, but through the intermediary of the abutment ring 8 which actsin this case with an angular abutment upon the arm I) of the follower and causes thereby the rotation of the follower to the right, as the inner handle is loosely mounted on the handle axle, as can be seen from Fig. 4 which shows thatthe shaft 25 of the inner handle (Fig. admits an angular rotation of 90 around the handle axle as the handle axle has an angular groove 26 in which a stud 27 of the axle shaft is guided which serves at the same time to prevent removal of the handle from the axle.

The shaft 25 of the inner handle is coupled with the ring 8 by means of studs 28 which engage with corresponding incisions of the handle shaft.

The inner handle can be brought into three positions, the first position being the normal horizontal position, in which by simple depression of the inner handle the latch bolt is pulled back.

In this position the latch bolt can be pulled back also by simple depression of the outer handle The second position of the inner handle is displaced 45 and the third position 90. In these angular positions theinncr handle is locked, by a special locking ball mechanism, on the abutment ring and on the, nose. The locking mechanism is constructed so that in the abutment ring two catch balls 29 are located at an angle of 180 said balls being thicker, or having a greater diameter, than the wall of the abutment ring 8, so that the balls project from the surface of the ring. The projecting portions of the balls engage with correspondingly shaped cavities 30 in the follower 10 (Figs. 9, 10) so that, when the ring is being rotated by means of theinner handle, the

follower 10 is pushed back, through the action of the spring 11 (Figs. 11, 12) by the balls which now get out of .the cavities 30 to engage again with the next following cavities under the action of spring 11 whereby the innervhandle is adjusted-in the next following angular position. There are three pairs of cavities arranged in the surface of the follower in accordance with the three positions of the handle.

The follower 10 is returned into the original postion b the action of the ring-shaped spring 11. The shaft 31 of the outer handle comprises a portion 32 of square cross section for the follower and a cylindrical portion 33 onwhich the inner handle is rotatably mounted.

In the horizontal position of the inner handle the abutment 9 of ring 8 occupies the position shown in Fig. 1. W'hen the inner handle is turned the abutment 9 and the angular abutment c participate in this angular rotation so that abutment 9 comes in front of and in contact with the angle lever 7 so that the angle lever and consequently the outer handle are locked and cannot execute an angular rotation. The outer handle is loc ed at this position of the inner' handle and cannot be operated by hand. The latch bolt is not impeded in its movements that it can be pulled back by means of the locking cylinder if the dog 15 is rotated, if the dooris slammed it is automatically pushed back and locked.

lVhen the inner handle is turned the abutment 9 of ring-8 gets in front of the abutment 3 1 of the latch bolt 6 and locks the same. In this position of the inner handle the angle lever 7 and the outer handle are loclc'ed and the latch bolt cannot be pulled back with the aid of the

locking cylinders

13 and 14. The fixation of the lockin cylinders, which can be carried out only if the lock has been mounted in'thc door is effected in such a manner that two projec- .tions 35 provided on the ends of the locking cylinders, displaced the one with re gard of the other are made to engage with corresponding apertures 36 of the

parts

1 and 2 of the lock case from the outer side and then turned 90, into the position shown in Fig. 1, these projections v3.") coming thus into close contact with the walls of the lock case. In order to make it possible that the two cylinders 13 and 14- 'are simultaneously rotated they are connected by a pin 37 fixed on the one cylinder and which is inserted into the other cylinder if the two cylinders are inserted and both at the same time into the lock case.

In order to lock the cylinders against back rotatioira clamping bolt 16 is arranged between the lock case and one of the cylinders and engages partly into a corresponding groove of the one of the cylinders. This clamping bolt 16 is inserted from the side of the cramping board 4, after the locking '

cyl inders

13 and 14 have been inserted, and having a screw bolt securely screwed on the cramping board 4. The dog 15 (Fi 2) of the two locking cylinders is mounte in one of the cylinders (for instance the cylinder 14) like a stud. and it, is securely but rot a tably journaled in the two end plates of the locking cylinders. The locking cylinder 13 has two abutments 38 for the dog 15 when it is being brought into the position for locking the latch bolt. The dog 15 has a cross shaped incision 39 in order to be gripped by the key in the horizontal position or in the vertical position.

I claim 1. A door lock of the type described comprising in combination an outer door handle, an inner door handle rotatable relative to the outer handle, a spindle for said inner handle a latch bolt, a follower connected to said outer door handle a rotatable ring coupled to the inner handle so as to move in unison therewith said ring being arranged at the side of the said follower rotatably about the spindle, means for causing the ring to engage with the follower and make the same turn directly when the inner handle is turned for operating said latch bolt, said ring being free to move independently in the reversed direction, and means for enabling the ring to arrest said outer handle independently of the latch bolt when the inner handle is turned in the direction opposite the normal one.

2. A door lock of the type described, comprising in combination an outer door handle, an inner door handle rotatable relative to the outer handle, a latch bolt, a follower connected to said outer door handle a lev r controlled by said follower and serving as operating means between said follower and said latch bolt, a rotatable ring coupled to the inner handle so to move in unison therewith said ring being arranged at the side of the said follower rotatably about the spiiajlle, means for causing the ring to engage with the follower and make the sa me t urn directly when the inner handle is turned for operating said latch bolt, said ring being free to move independently in the reversed direction, and means for enabling the ring to arrest said lever and said outer handle independently of the latch bolt when the inner handle is turned in the direction opposite the normal one, said latch bolt being free to move when said outer handle is thus arrested.

A door lock of the type described, comprising in combination an outer door handle. an inner door handle rotatable relative to the outer handle, a spindle for said inner handle a latch bolt, a follower connected to said outer door handle, a lever controlled by said follower and serving as operating means between said follower and said latch bolt, a rotatable ring coupled to the inner handle so as to move in unison therewith said ring being arranged at the side of the said follower rotatable about the spindle, means for causing the ring to err gage with the follower and make the same turn directly when the inner handle is turn ed for operating said latch bolt, said ring being free to move independently in the reversed direction, and means for enabling the ring to arrestsaid lever and said outer handle independently of the latch bolt when the inner handle is turned in the direction opposite the normal one, said latch bolt being free to move when said outer handle is thus arrested, means enabling said inner handle to arrest both latch bolt and outer handle in another position of reversal, and a yieldable catch to automatically engage said inner handle in its different positions when the inner handle is being turned by hand.

4. A door lock of the type described comprising in combination a latch, an inner handle, a spring controlled follower having spherical cavities and rotatable balls in said cavities of the follower designed to automatically adjust said inner handle accurately in said latch and in the locking positions when said inner handle is turned by hand.

5. A door lock of the type described comprising in combination with an outer handle and with an inner handle, an axle on said outer handle, a hollow shaft on said inner handle pivotable around said axle of the outer handle and having a angular groove and a cotter for attaching said hollow shaft of the inner handle on said axle of the outer handle engaging with said groove of the axle of the outer handle so that the hollow shaft of the inner handle is guided in preserving its rotatability with regard to the axle of said outer handle,

6. A door lock of the type described, com prising in combination with the cramping board, a lock case composed of two parts stamped from sheet iron each part having a circular aperture with two lateral extensions, two locking cylinders, two opposite lugs late ally projecting from each of said locking cylinders designed to engage with said lateral extension of the circular apertures of the parts of the lock case,'and a stud projecting from the end plate of one locking cylinder engaging with a cavity of the other locking cylinder said lugs of the locking cylinders serving to secure the locking cylinders in their posl ion in the lock case when said cylii'idcrs after having been inserted are rotated 90 and a clamping bolt projecting from the crai'nping board of the lock case and engaging with a groove of one of the locking cylinders.

In testimony whereof I aflix my signature.

lVILHELM HUTTENMANN.