US1087193A

US1087193A - Door-lock.

Info

Publication number: US1087193A
Authority: US
Inventors: Robert Lee Skinner
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-05-03
Filing date: 1913-05-03
Publication date: 1914-02-17
Anticipated expiration: 1931-02-17

Description

R. L. SKINNBR.

DOOR LOOK.

APPLIGATIONHLBD MAY 3, 191s.

1,087,198. Y 'Patented Feb.17,1914.

sums-SHEET 1.

aau,

R. L. SKINNER.

DOOR LOCK.

APPLICATION FILED MAY 3, 1913.

Pateted Feb.17,1914.

2 SHEETS-SHEET 2.

5w vento@ aannam LEE SKINNEB.,

or LE ROY, NEWYOBK.

Specification of Letters latent.

Application led Hay 3, 1913. Serial No. 765,183.

To all 'whom it may concern:

Be it known that I, ROBERT L. SKINNER, of Le Roy, in the county of Genesee and 'State of New York, have invented certainV new and useful Improvements in Door- Locks; and I do hereby declare the following to be a. full, clear, and exact description ofv the same, reference being had to the accompanying drawings, formin a part of this specication, and to the re erence-numerals marked thereon. i Y

Y My present invention relates to locks and moreparticularly to knob. locks fordoors,

and it has for its object to rovide a simple,

cheap and eliicient lock of t e thrust spindle type so constructed that the-increased friction resulting from the pressure on the door in opening and which must be overcome by the latch during its retracting movement is greatly reduced. l -A further object of the invention is to provide a lock of this nature having a safety catch of an improved construction and possessing, among other advantages, characteristics whereby the catch may beset with the door open and the door then slammed and the latch locked against a second retraction untili released b the manipulation of the safety catch mechanism. l

To these andother ends the invention con sistsv in certain improvements and'combina'- tions of parts all as will be hereinafter more fully described, the novel features being pointed out in the claims atthe end ofthe specification.

In the drawings: Figure 1 is a horizontal section throu h a .door lock vconstructed in accordance w1th and illustrating one e m-.

bodiment of my` invention,.adjacent portions of the door and j amb being also shown and the parts v'being in normal position, thatiis, with 'the latch ready to be released by pressure on the knobs; Fig. 2 is asimilar view" with the latch retracted; Fig. 3 is asimilar view withthe latch in locked position and under the inuence of the safety catch; Fig. 4- is a. section talensubstantiallyon the line 4 4 ofv Fig.' 1; Fig.v 5 is a section through the same parts taken substantially. on -the line 5`5 of Fig. 3; Fig. 6 is a section taken on the line 6-'-6 of Fig. 5, and Fig. 7 isade- 'tail section taken 'substantially onthe line 7-7 of Fig;` 3. y

Similar reference numerals throughout the several figures indicatethe sam parts.

Referring more particularly to the drawings, A indicates the dori', and B the door usual aperture C and keeper plate D. The door A is preferably bored out as at E to lock mechanism. This supporting member outer end plate 2 flush with the edge surface of the door and an inner ring 3 (Fig. 4) which hold the supporting member snugly within the bore E. The outer end plate 2 is apertured at 3a to allow the projection therethrough of the outer end ofthe latch 4 which has an abrupt engaging face 5 and a beveled face 6 on the other or rear side, as usual. rlhe inner end of the latch 4 has an anguplns or projections 8 on the support 1 but the latch is normally held projected or in the pos1tion shown in Fig. 1 -by a spring 9 of the ends to the latch and support and preferably provided with a 'stifl'ening core 10 to prevent undue distortion thereof when compressed.

The door knobs 11 and their sleeves 12 are carried in xed relation ona transversely disposed thrust spindle 13 guided inthe escutch- -eon plates 14 of the door and provided at an intermediate point with a laterally project-ing cam l5. yArranged in the path of this cam 'is an u pstanding projection or abutment 16 at the inner extremity of the latch 4 In the operation ofthe lock as thus far described, when thedoor is to be opened it rocatory movement but is at the same time swung or displaced laterally as shown in lFig. 2v or in a direction away from 'the engaging face 5J- It will be noted in this connection that the lower guide pin 8 is ar- -ranged intermediate the -outer end of the latch "and the point to which the projectioiL 1 6 is carriedby the cam so that it acts as a' larly disposed portion 7 guided between two` and of the angularly disposed end portion 7 thereof. s

is .only necessary to pull one knob 11 (the gularly, the latchis givennot only a recip Patented Feb. rr, 1914i..

receive the main supporting member l of the preferably comprises in an integral piece an compression type connected at its respective casingfor jamb, the latter provided with the l fulcrum to effect this swinging movement. Thus, as the pressure necessary to operate the spindle 13 is exerted against the knob and hence against the door and communicated to the latch in its engagement with 'retra/cting movement as will be seen from inspection of Fig. 2. When the latch is in the extended position of Fig. l, however, the beveled face 6 is not in engagement with the end plate 2 but instead a squared-olf side of the latch adjacent thereto so that there is no tendency for itto perform this retracting function until after the movement has progressed some distance under the influence of the spindle 13 and cam 15 thereon.

The latch will be seen to be a spring latch that is, one that yields with the closing of the door independently of, the knobs and automatically projects itself into engagement with the keeper plate to be thereafter released only by manipulation of the knobs. In this instance, the retraction of ythe latch is effected in the ordinary manner by the riding of the incline 6 on the outer edge of the keeper plate. i

In order that the latch may be locked in I its extended position beyond the cont-rol of the knobs to permit the door to be opened only from the inside or through the use of a key from the outside, what will be termed a safety-catch mechanism is employed. rlhis comprises a detent 17 carried, in the present instance, by the latch itself on a pivot 18 (Fig. 4) and pressed downwardly Y b a spring 19 so that the normal tendency o the detent is to interlock at its ends with the spindle 13 by droppin into a depression 20 provided therein (see ig. 5). This engagement prevents inward movement of the latch and also prevent? any reciprocation of the thrust spindle 13 as will hereinafter appear.

Extending longitudinally through the center of the spindle 13 and rotatable therein through 90 is a stem or controlling member 21. The spindle is preferably made in two parts in order that this stem may be inserted i and the parts secured together b the sleeves 12 of the kno-bs 11 andalso by pins 22 which also serve to secure the sleeves in fixed position on the spindle. 0n the inside of the door,'the said stem may be rotated at all times by a finger portion 22a projecting from the center of that knob whereas on the outside the spindle is slotted at 23 to receive a key so formed as to interlock with a corre-V spondingly formed end portion 24 on the stem, the spindle being cut to form wards 25 as usually required in locks, In fact, the

said stem may be placed under the control of any particular kind of a key or lock mechanism suitable to the general structure shown and it is vnot thought that .a specific construction need be described any further in detail.

The detent 17 is normally held in an inop- -erative position by a cam or eccentric 26 on the stem 21 which, together with an extension thereof constituting al dog 27, occupies the recess 2O as shown in Figs. 1, 2 and 4. When it is desired to bring the safety catch into operatiouand to lock the latch against re-l traction by theknobs, the stem 21 is rotated to the left which 'throws the cam 26 out of a port-ion of the opening 20 but which causes the detent 17 to be raised by the dog 27 and to be still heldin an inoperative position. Besides its rotary movement, the stem 21 is also movable a limited distance longitudinally. Therefore, when the door is closed and the latch automatically retracts itself during which movement the inner end of the latch moves laterally in its guide 8 in one direction while the outer end is tilted in the other as before described, the detent 17 slips ofi' the dog and during the subsequent `outward movement of the latch into engagement with the keeper the detent rides along against` the flat surface 28 on one side thereof and finally drops into the recess 20 preventing a subsequent retraction of the latch or reciprocation on the part of the spindle 13.-

Torelease the latch from the safety catch, it is only necessary to rotate the stem 21 back to its former position either by means of the finger portion 22a on the inside or by the use ofa vkey on the outside. rThe cam portion 26 will then ride the detent 17 out of the recess 20 as shown in Fig. Ltand at the same time a cam surface 29 on the edge of the do 27 opposite to the straight edge 28 thereo engages/a cam surface 30 on the adjacent side of the recess 20 and returns the stem 21 in a longitudinal direction to its former position so that the dog 27 is brought back beneath the detent in readiness to raise 4 it again, while the dog and cam 26 together completely fill'the recess. Thus the safety catch may be set with the door open and the door then slammed shut and locked automatically as only one reciprocation or retraction of the latch is permitted after this setting of the mechanism. Should it be desired, however, to set .the latch while the door is closed, it is only necessary after raising thev dog 27 to manually impart the longitudinal movement-to the stem 21 that would otherwise be accomplished automatically by the detentA either by pressing on the thumb piece 22a or by moving the whole spindle 13, which will ordinarily have enough play tol carry the dog 27 from beneath the detent. ln fact, the engagement of these two last named parts is required for only an instant as the detent travels bef I. i,osmos yond the recess immediately the inward movement of the latch starts:

' It will be observed vthat only the one spring is necessary for the whole mechanism as the projection 16 on the latchriding the -cam 15 on the spindle. returns the latter to a normal or central position. The Athrust of the spindle in'one direction is halted by ciprocatory latch member having\an abrupt,

engaging face for coperation with the keeper plate and, a transversely disposed' i thrust spindle operating to retract the latch member, of a guide for' the latter adapted'to effect a lateral displacement thereof coincidently with its longitudinalreciprocation whereby its engaging face is caused to recede from -the keeper during vthe retraction of the latch. 2. In a lock, the combination with aY reciprocatory latch having anabru-pt en-gagf ing face for coperation with the keeper plate and a' transversely disposed thrust spindle operatingto retract the latch member, of a guide for the latter coperating with the inner end thereof and adapted to eect a lateral displacement. of the latch, coincidently with vits longitudinal reciprocation whereby its engaging face at the opposite'end is caused to recede from the keeper plate during the .retraction of the latch.

3. In a lock, the combination with an' M apertured supporting member, a reciprocatory latch member carried thereby having an outer end normally-projecting through the aperture and provided with an abrupt en-` gaging face on one side for cooperation with the keeper and a beveled face on the other side and a transversely disposed thrust spindle operating to retract ythe latch member, of a guide for the latter coperating with the inner end thereof and adapted Ato eii'ect 'Y a lateral displacement of the latch coincidently with its longitudinal reciprocation whereby the engaging face is caused to recede from the keeper plate during the re. traction ofthe latch, the beveled face at its outer end beihg arrangedl to coperate meanwhile With a wall of the aperture in the support' to accelerate the retracting movement.

4. In a lock, the combination with a 'reciprocatory latch member havin an abrupt engaging face at its outer en'd or coperation With the keeper plate and a transversely dlsposed thrustspindle operating to retract the latch^l member,'of a guiding memb er coperating with an iintermediate portion of the latch and a pa 1t adapted to engage vthe l latch beyond Ythe guiding member and to rock it on the v latter to elfecta lateral displacement of the outer endY coincidently with its recziprocation whereby its engaging face is caused to recedefrom the keeper during the retraction of the latch.

5. Ina lock, the combination-with a reciprocatory latch 4member having anabrupt on the spindle .l

engaging-.face alt its outer end for copera tion with the keeper plate land a transversely disposed thrust spindle operating to retract spindle being provided vwith coperating the vlatch member, said latch member and' -abutments one of which' has a cani face, of

a guiding member on the support coperating withv a l'portion of the latch member intermediate the said abutment and thefouter end of the latch member whereby the engagement of the abutment on the spindle' effects a lateral displacementofthe outer kend lof the latch member coi-ncidentlyjwith its longitudinal reciprocation and its engaging -face is lcaused to recede fromfthe v keeper during the retraction 'of the latch.

6. In a lock, the combination with a reciprocatory latch member and a transversely disposed thrust spindle operating-to Aretract the latch member, of a sa ety catch embody# ing a detent carried onone of the members and adapted '.to yinterlock withv the otherwherebyv bothfthe retraction of the latch and the thrust of the spindle is prevented.

7. In a lock, the combination with av re#y ciprocatory latch member and a'transversely -rlisposed thrustspindlefoperating to retract he latch member, of-.a safety catch embodying a detent carried on one of the members dgfhavin'g'bff and.' on positions in which 'latter itl is adapted to interlock with the otherv member wherebyfboth the retraction" of the'latch and the thrust'of the'spindle isi prevented, and 4a controlling device for thev .detent carried by the thrust spindle and arranged to hold the detent in one of its said positions. N v v 8. In a lock, the combinationwith a re' ciprocatory latch and a transversely disposed thrust spindle yoperating to retract the latch, of a safety catch embodying a detent carried'by the latch and having a nor- `mal tendency to interlock with the thrust.l

spindle and afrotary controlling device eX- tending 'through thespindle and embodying a cam. operating to throw thedetent toan inoperative spindle.

position with reference to the I v'125 9. In' a lock, the combinationwith a re v i ciprocatory latch and 'a transversely dis- 1 posed` thrust spindle operating to retract l the latch, of a safety catc h embodying a de'- tent carried by one lof "the, parts and Ahavaso;

ing a normal tendency to interlock. With the other, a controlling device operating to throw the detent to an inoperative position and means f r automatically displacing the controlling means to allow the detent t0 assume an operative position upon the next reciprocation of the latch.

l0. In a lock, the combination With a reciprocatory latch and a transversely disposed thrust spindle operating-to retract the latch, of a safety catch embodying a detent carried by one of the parts and havinga normal tendency tointerlock with the other, a controlling device normally operating to hold the detent in' its operative position, means set by the movement of the controlling device in one direct-ionl for automatically displacing the latter during the next '.reciprocation of the latch to permit the detent to assume an operative position and means for manually so displacing'theontrolling device independently of any recip-V rocation of the` latch.

Jl1. ln a lock, the combination With a reciprocatory latch and a transversely disposed thrust `spindle operating to retract the latch, of a safety catch embodying a detentA carried by one of the parts and having a normal tendency to interlock With the other, a controlling device Within the spindle norymally operating to hold. the 'detent in its inoperativey position, means set by the rotamamas tion of the controlling device for automatically displacing the latter longitudinally during the next reciprocation of the latch to permit the detent to assume an operative position and means for manually so displacing the controlling device independently of any reciprocation of the latch.

12. `-ln a lock, the combination with a reciprocatory latch and a transversely ldis-v stem adapted to holdthe detent in inopera.

tive position when the stem is rotated to carry the said part thereon out ofthe recess, the detent being adapted to' ride oil of the dog when reciprocated and to actuate the same laterally to move the stem longitudinally Wherebythe detent is permitted to engage Within the recessand prevent subsequent reciprocation of the latch:

HUBERT LEE SKINNER.

Witnesses:

FRED Sn'rz, l CHAS. W. SKnvNER.