US2672041A

US2672041A - Tubular lock

Info

Publication number: US2672041A
Application number: US64735A
Authority: US
Inventors: Frederic K Heyer
Original assignee: Yale and Towne Manufacturing Co
Current assignee: Yale and Towne Manufacturing Co
Priority date: 1948-12-11
Filing date: 1948-12-11
Publication date: 1954-03-16
Anticipated expiration: 1971-03-16

Description

F. K. HEYER TUBULAR LOCK March 16, 1954 4 Sheets-Sheet 1 Filed Dec. 11, 1948 n m. 6 Mm IT m 5 on mm M 3 G v? v0. mm 5 w QM vi 3 Mm ow w m mm w mm (7 LO Q INVENTOR Ffk. Hyr BY ATTORNEY March 16, 1954 HEYER 2,672,041

TUBULAR LOCK Filed Dec. 11, 1948 '4 Sheets-Sheet 2 i .l'l. 1 11:14.

55 6 56 e6 66 7 69 58a 59 'l 60 W 5 I6 I I INVENTOR ATTORNEY March 16, 1954 F. K. HEYER 2,672,041

' TUBULAR LOCK Filed Dec. 11, 1948 4 Sheets-Sheet 3 I AITTORNEY March 16, 1954' HEYER I 2,572,041

I TUBULAR LOCK Patented Mar. 16, 1954 Thai! 1:

n st il: lie-z n ma a yoga, s or t Monolo hz e's io hpplication peceniber 11, 194 3 Serial No. 64,735

t ny

This invention relates to a tubular look, and more particularly, to the tubular lock d s ribed and claimed in my a plication for patent, Serial No. 698,936 filed September 24, 1946, which issued as Patent No. 2,538,688 on January -.1,6,.=1951.

In the said application -I show a rollback casin adapted. to be positioned in a transverse-bolt? formed in a door and to be united with alatch: bolt casing inserted in a bore beginning at the edge of the door and running toward the bore into which the rollback casing is secured. The roll-.- bael; casing shown in application houses a rollback adapted to be actuated by'a spindle that in turn is rotated by' a pair of spindle operators, there being one spindle operator at each end .of the rollbacl; casing. Each spindle operator is adapted to be maintained in a central neutral position by a pair of control andis rotatable clockwise or counter-clockwise from the said neutral position by a knob secured thereto.

In my earlier application, I-show a singlesolid I spindle positioned in the rollback casing and aperated by the two spindle operators so that the inside knob and the outside -k-nob arexotatable together at all times. Thus, iiiy .easlierizlock nan be characterized as comprising'a--r ollbackcasing having a pair of centrally positioned .spindlepperators capable of rotation independently of one another by knobs with the two spindle operators being joined for operation together when .a single 1 solid spindle assembled relatively thereto.

V -In my present application, Iuti-liz'e substantially the same rollback; casingas in my' earlier application and the very-same arrangement of spindle operators and spindle operator centering means. However, use an entirjeli differentvspin- 'dle construction so that the lmofps are iota-table relatively to one another. Similarly, -I provide means for locking the outside spindle operator and its knob against rotation, means being pmvided to allow rotation of the' outside spindleloperator upon suitable 'actuation' -oi keyioperated mechanism. -The control means foix effiectingkthe locking of the outside spindle operator and. the outside knob are mounted :in ithecinsidedenobiand are readily controlled 'as will .be :indicatedipresrently.

' In otherwor-ds l utilize substantiallythe same casing, rollback, and spindle -operator,construetion as in my earlier loch, -butlby providing itwo spindles instead of one, together with difierent knobs, -I obtain entirely different iiontrlolsafid entirely difier-ent operations; ZEherebyfl mama possible to utilize thebasic-combinationof my earlier application own d 191 store oorsfo tsi o apar m house doors, a d for er iholo lolio fi a W od i app eciat d by th se sk led hi the art;

a urth r featu e ov 'pmy in n n 1 ut a split spindle .oomnrised o tw Pa .0119 fiollfi outs de and one called inside, both spindleportsh n rm l o it ned wi he io lhe l contained in the rollba k easin t will n m ily appreciated that he i is do P t of th pli spindle is mo e outward o the if t it will no lon r be efie i o to a e th o l k? For so positi n n the spin le I ,t' zo'1mo mounted Within t is ollback Pos n a d actuated by an extremely novel const u t on of th in de knob. i

As a particular feature o the in en i n that is of considerable importance, th outsid spindle is pushed i wha m y b cons der the looked p i i h eof through th vh ol im o yi ldin means. l 'l'hereafitor, the lltdid SPi l l? may p? moved a t u h compres i n o the y eldi ,rheansit'o render the outside spindle e fiective, but .without'disturbing the means that were first used to move the outside spindle into its locking .posi; noni :Because of this onstructi n. on e the out: side vspindle is .placed in locked position by the operation of the means in the inside knob, it can be inaved into and out of locked position through other means without disturbing the setting ofthe means :in the inside knob. Those skilled in the lock artwill readily appreciate the extreme desir; abiliti of this functioning of my invention. As "a furthermore particular feature of them vention, the l'outside spindle when moved out of the rollback isladaptedtoibe'lockedagainst rota; tion so that a doubleilocking thereof is eiiected. -In7other 1'vords, .the outside .spindle'is not only not in engagement withthe rollback but is also held against rotation.

1n the ftubular locks of the prior art, there is =frequentlyoproizideda ipushobutton on the inside knob for locking .the outside knob, and in nany locks lthe' push Tbuttori is depressed ,to lock .the outside =knoba'nd .then remains .olepresseol until the insideiknob =isrotated or (the latch-bolt is re tracted, ithese operations releasing the button .;for

lou'tward inovement. Where the look is applied to Ian .outside .door, it is generally :Ili fififihhifij? move-.th'e .push button into locked position and then maintain -it there until the push button is actually mamially released rather than aut ma ically released by the .olos hg of the door or the turning of the inside knob. vFor this purpose there arepmvided means wher b th .plfihi liil' spring and then rotated into locked position. Thereafter, to release the push button, it is rotated first in a reverse direction and then allowed to spring outwardly. Such operation of the push button is extremely difficult, especially for women and children. In another type of lock of this class, locking is effected by a turn button carried by the inside knob. This type of button is also difficult to manipulate.

I have conceived a construction using a push button that may effect locking without turning thereof. Thus, my push button, when pushed inwardly, effects a locking of the mechanism, the push button then moving outwardly again to a predetermined position, while leaving the mechanism locked. Upon a second inward pushing of the push button, it releases the locking mechanism and moves outwardly once again. In other words, my invention comprises the locking first by a first push on the push button and the release thereafter of the locking mechanism by a second push on the push button.

I have thus outlined rather broadly the more important features of my invention in order that the detailed description thereof that follows may be better understood, and in order that my contribution to the art may be better appreciated. There are, of course, additional features of my invention that will be described hereinafter and which will form the subject of the claims appended hereto. Those skilled in the art will appreciate that the conception on which my disclosure is based may readily be utilized as a basis for the designing of other structures for carrying out the several purposes of my invention. It is important, therefore, that the claims be regarded as including such equivalent constructions as do not depart from the spirit and scope of my invention, in order to prevent the appropriation of my invention by those skilled in the art.

Referring now to the drawings, Fig. 1 is a vertical section through the rollback casing of my lock and the inside and outside operating knobs. Fig. 2 is a section taken along the same lines as Fig. 1, but showing the outside spindle and outside knob locked against rotation. Fig. 3 shows the parts carried by the inside knob in a different operating position. Fig. 4 is a view taken along lines 4-4 of Fig. 2. Fig. 5 is a section taken along lines 5-5 of Fig. 2. Fig. 6 is a section taken along lines 66 of Fig. 2. Fig. '7 is an exploded view of the parts of the inside knob push button and the mechanism actuated thereby. Fig. 8 shows an inside knob equipped with a key operated mechanism for locking and releasing the outside spindle. Fig. 9 shows two of the important parts utilized in the combination of Fig. 8. Fig. 10 is a perspective view of the outside spindle. Fig. 11 is an elevation of the inside knob while Fig. 12 is an elevation of the outside knob. Fig. 13 is a partial vertical section showing the latchbolt casing and its relation to the rollback casing. Fig. 14 shows the latchbolt casing assembled to the rollback casing with the two knobs and their roses in operating position.

Referring now more particularly to the drawings, and especially Figs. 11 to 14 inclusive, the latchbolt casing of my invention is designated by reference numeral [0 and has mounted therein a latchbolt ll adapted to be retracted by a push piece [2 shown more particularly in Fig. 13. This push piece I2 is mounted for movement to the left in Fig. 3 upon rotation clockwise or counter-clockwise of the rollback l3 mounted within the rollback casing indicated generally. by refer- 4 ence numeral I4. It will be noted that the rollback casing has threaded sleeve portions I5 on which are adapted for rotation parts for supporting the roses [6. The inside knob of my lock is designated by reference numeral l1 and is adapted to have mounted therein a push button [8, the outside knob being designated by reference numeral l9 and carrying a cylinder lock best shown in Fig. 1 within which is mounted a key plug 22 best shown in Fig. 12.

The rollback casing I4 is formed of two halves, as is quite apparent through reference to Figs. 1, 2, and 14. Essentially, the rollback casing is exactly the same as that of my earlier application supra except that the two parts comprise a series of nesting lugs 23, each having an upstanding shoulder 24. By passing a wire 25 between the upstanding shoulders 24 of the lugs 23, the two casing halves are locked together and are prevented from separation. I have found this construction superior to that of my earlier casing construction wherein I use a series of matching lugs adapted to be locked together by a spring sleeve.

The latchbolt casing 10 has a pair of arms 26 adapted to enter the rollback casing M and to be locked thereto by means fully claimed and set forth in my earlier application supra. It is between these two arms 26 that the push piece l2 is positioned for actuation by the rollback it, also as set forth in my earlier application. To understand the present invention it is only necessary to know that I use a rollback to retract a latchbolt, my invention residing here in the control of the spindles that rotate the rollback.

The outside spindle operator of my invention is designated by reference numeral 21 as best seen in Figs. 1 and 2, and is mounted for free rotation relatively to the rollback casing l4. Part of the spindle operator 2'! lies within one of the sleeve portions of the rollback casing M, while part thereof is within a central rollback chamber of the rollback casing, a suitable retainer ring 28 being utilized for retaining the spindle operator 2'! against movement outwardly of the rollback casing.

The inner spindle operator is designated by reference numeral 29 and is mounted within the rollback casing M in substantially the same manner as is the spindle operator 21. A pair of control rings 30, best shown in Figs. 1 and 2, coact with a spring 3! and a longitudinal rib 32 of the rollback casing I4 to maintain the spindle operator 21 in a predetermined rotated neutral position relatively to the rollback casing l4. Thus, the control rings function through the spring 3% to return the spindle operator 2? to the position illustrated in Fig. 1 whenever the spindle operator is rotated clockwise or 1 counter-clockwise. Similarly, a pair of control rings 33 function to maintain the outer spindle operator 29 in a neutral rotated position relatively to the rollback casing M. The construction of the control rings and their manner of functioning is well set forth and claimed in my earlier application supra and is therefore not described in more detail here.

The rollback i3 is formed with a square bore 3 3 in which is adapted to be mounted the inner spindle and the outer spindle 36, the spindles being square and therefore slidable relatively to the bore 34 in the rollback H3. The spindles are similarly slidable in square bores of the two spindle operators. The end of the inner spindle 35 is turned down slightly at 31 as probably best seen in Fig. 7, to cut down the corners thereof and is formed with a pin "portion 38 lying within a bore-x39 ofthe spindle 35.

A slot All is termed on the upper sur'iaee of the inner spindleiias'best seen in Figs. 1 and 7, and cooperating with this slot 40 is the lug 4| of a slide .42. Slide 42 is formed with a groove 43 within which lies a spring 44, the right hand end of which as seen in Fig. bears against a surface of inner spindle operator 29, whereby to urge the slide 42 toward the'left in Fig. :1. The slide is retained against movement completely outwardly of the spindle'operator .29 through a scalp 45 applied to the endof the spindle operator 29 and having an inwardly extendingshoulder coasting with the curved end 46 of theslide 42. Inner spindle 35 is formed also with a bore 41 within which is positioned a compression spring 45, the left end of which presses against an arm 49 depending downwardly from slide 42 and equipped with a spring guiding pin v4.9a. It is the function of spring 48 to maintain the inner spindle 35 in its position of .Fig. .1 relatively to slide .2. It is the further function of the spring 48 to act as an intermediary between slide 42 and the spindle 35 whereby movement of the slide 42 to the right'in Fig. l willmove the spindle 35 to the right in Fig. l and to the position of Fig. 2. The spring 48 has a further function whereby to allow movement of the spindle 35 to the left from its position of Fig. 2 without moving slide 42, all as will be set forth hereinafter.

The inner spindle operator 29 carries a spring operated retaining plunger Sfinormally positioned in alignment with a bore of the left sleeve portion of the'rollback casing has seen in Figs. 1 and 2. The retaining plunger 50 .is adapted to enter a retaining bore 152 in a part 53 of the inner knoh it whereby when the knob is slipped over the spindle operator itwill be retained against outward movement as vfully'shown in the drawings. Naturally, by the mere insertion of a tool into the bore til, the retainin plunger 5.0 may be depressed and the knob "removed.

Knob I? is fashioned ofsheet, metal asis fully shown in the drawings and is adapted to-have secured thereto a cup 54. of sheet metal. best shownin Figs. 3 and 4. The knob I! is furthermore formed so as to have-a central opening 551 within which operates the push button [8 earlier referred to and probably best illustrated in Figs. 3 and 4 taken togetherwith Fig. '7.

Push button I8 is formed oisheet metal adapted to be forced over the end of a peculiarly shaped plunger 55 best seen in Fig. '1. Plunger 56 is formed with a central longitudinal slot 5'! with.r in which moves an odd-shaped detent 53 best illustrated in Figsl and3 and resembling best 1 an inverted U. One leg of the detent'fifl is designated by reference numeral 5.9,. and it moves relatively to a spring containing bore 63 of the plunger 56. A spring 6| lies within this bore 69 of the plunger 55 and acts to press the detent 56 into its position of Figs. 1 and 2. A Spring 62 is positioned between the bottom of the cupshaped member. 54 and a surface ofthe plunger 56 whereby normally'to urge the plunger 56 and the push button it into the position of Figs. '1 and 2. Slidably mounted about the plunger 55 is a sleeve-like push piece 63. best shown in. Fig. I. At the right hand end of the push piece title a pin .E- adapted for (reaction-with the arm 49 of the slide .2 as is fully shown in the drawings. Push piece 63 is formed with a longitudinal slot es adapted for alignment with the slot 510i the plunger L5G. lltalsdformed with-a transverse slot .65 .adaptedforcoaction with a dog 51 pivfl otally mounted at 58 within the .cup .54 and urged by a spring 69 'tewardrthe slot 66. "Push piece 53 is formed with :an'opening 10 adapted to expose a slot 1] in the plunger 56. Qperating within the opening 10 and within the slot 'll is part of a dog :12 pivoted at 13 to the cupid and urged by a spring 14 toward the slot :1 I.

When the parts are positioned as Fig. 1, the spring 52 holds the plunger .56 and the push but= ton [B in the position of .Fig. l, the outward movement of the plunger 56 being limited through coaction of the dog I2 with the shoulder Hat defining the right hand end of. the slot 11 in lunger 56. .At the same time, the dog 51 will pressagainst the upper surface of the'push piece $3 to the right of the slot '56 thereof. Pin es of thepush piecewill be against the depending arm 49 of the slide .42. Detent 58 will lie assess in Fig. .1, being held by itss ring 59a in the-particular position illustrated.

Let us now see what happens when the push button 18 ispressed inwardly or to the right in Fig. 1. As the push button lemoves to theright. it carries with it the detent58 and the push piece es, all moving against the force of the sprin 62 and spring .44.. Naturally. movement to the ri ht will cause the pin end .64 of the push pie-2e 63 to move the slide 42 into the position of Fig. 2. thereby acting through the spring 48 to-ef e movement to the right of the inner spindle .35 and the outer spindle 36. During this. movement the cam surface, 53a of thedetent 58 will merely act to press the dog 61 upwardly against the or f ts spri t9,-.after wh eh the det nt 8 will be positioned to the right of the .dog 51. As soon as the slot .66 of the push piece 5.3 moves opposite and under the dog .61, that do will ride into the slot 65 as shownin Fi s. 2. 3 and r and the push piece 63 willthereafter be locked in h position of Fig. 1. However, push bu ton it and the plunger 5.6 do return to the position of Figs- 1 and 2, and to explain this movement'an intermediate position of the pushbutton t8 and the plunger 56 is illustrated in. Fig. 3.

During movement of the push button If! and plunger .56 to the left from-a position in whi h the right end of detcnt 58 is at h 'l'ight 0t (10% er, the surface 582) of the'detent. 58 Will ride against the dog 5'! and will be held by the, dog 8-! against further movement to the left with the plunger 55. This will allow the downwa dly tapered end suriaee. l5 ofthe plun er 56 o move with the push button 18. away from t s 5 and outfrom. under thebottomei the i ht hand le of the detent 58. This is pos l because spring as is morenoweriul than springfil. At this pointthe detent-dij willmove. downwardly to the position of'Fig. 3 through the compression of spr n 'tl. with do .5 ammine the deten w wa d y to allow .detent- 8 o move t the. left of dog filand back its normal relation to th 'plunser 56 and the p sh butt n leillustrat d in 1 and 2. In other words, a the p sh button 13 moves to the left of Fig. '3tothe posi tion of Fig.2, it leaves hepush p ec beh nd ts urelyilockedby the de 6 d tent 58 bein first cammed below the dog 5'! and then pushed outwardl by nsu in 6i i to its o mal posihas relat vely t the pus 'button t.

In the position the. parts havenew r ach d. the slide 4 and th pushpieee- 3am eld by he do 61 so as o maintain the spindles and 36 in the position illustrated in Fig. 2. Let-us asume-it new-becomes.desirabletoellowmovement of the spindle 35 to the left from its position of Fig. 2 and back to its position of Fig. 1. This movement will be imparted to the spindle by the influence of means acting against the outer spindle 3S, and also by the spring 44 operating between slide 42 and inner spindle operator 29. However, such movement of the spindles cannot be accomplished until push piece 63 is released from the dog 61. Such release is effected by a second inward movement of push button [8, this inward movement being considerably less, however, than was required to move the parts originally into the position of Fig. 2.

Thus, if push button I3 is moved to the right in Fig. 2, surface 58a of the detent 58, being held against downward movement as in Fig. 3 by a solid surface of the plunger 56, acts solidly against the dog and moves it firmly against the force of its spring 69 so as to withdraw it from the slot 68. Immediately thereafter, the push piece 63 is moved to the left and back to its position of Fig. l relatively to push button l8. In order words, the same push button that effects a movement to the right of the spindles when first depressed, releases the spindle holding mechanism and allows a movement thereof to the left upon a second and sequential depression thereof. The extreme value of this part of my construction will be appreciated at once by those skilled in the art.

During all this movement of the several parts just described, dog 12 acts as a limiting member relatively to the push piece {i3 and the plunger 56. The outerspindle 36 may be formed of a single piece as best illustrated in Fig. 10. Thus, it will have at its right end a cylindrical portion 18 having a cam surface projecting therefrom and designated by reference numeral 79. Upstanding from this cylindrical portion I3 is a guiding and locking member 80 formed with a slot 8i adapted for coaction with a rib 32 formed as an integral part of the right hand sleeve portion of the rollback casing 14. On the other hand, the outer spindle 36 may be formed of square stock for ready assembly, as best illustrated in Figs. 1 and 2, to a cylindrical member 18a, having a cam portion 79a. and a guiding and locking member 38a formed with a slot 8Ia. Actually, whether or not the parts are constructed as in Figs. 1 and 2 or as in Fig. 10 is immaterial to the operation of the invention.

When the outer spindle 36 is in its position of Fig. l, the left end thereof is within the bore 34 of the rollback so that rotation of the spindle by the outside spindle operator 21 will effect rotation of the rollback. Moreover, the slot8 la of the guiding and locking member 80a is to the left of the rib 82 so that the spindle 38 is free to be rotated by the spindle operator 2? within which it slides. However, when the spindle 36 is moved to the position of Fig. 2 through actuation of the push button [8 as earlier described, the slot Bla of the guiding and locking member 85a will ride over the rib 82, thereby locking the outer spindle 33 against rotation. Outside spindle 36 is, in the position of the parts in Fig. 2, outside of the bore 33 of the rollback so as not to prevent the rotation of the rollback by and with the inner spindle 35. At this point, it will be well to indicate that through the cutting away of the inner spindle 35 at 37, a safety zone is created so that the inner spindle in the position of the parts in Fig. 2 may be free to rotate even though a part thereof is within the square bore of the now locked spindle operator 21.

The outer spindleoperator -21 has pinned thereto at 83 an outer knob l9 formed of sheet metal 84 shaped to contain therein a cylinder 20 equipped with the usual key plug 22 having an operating bar 85. It is the function of the bar 35 to rotate a cam 86 equipped with a cam surface 8'! adapted for coaction with the cam surface 19a at the end of the cylindrical portion 18a that rotates with outer spindle 36. A spring 88 bears at its left end within a shallow bore 89 in cylindrical portion 18, or a bore 89a in the cylindrical part 18a of the modification of Fig. l or 2. In either case spring 88 urges the spindle 36 to the left in the position of the parts in Figs. 1 and 2, the right hand end of the spring 88 bearing against a surface of the cam 86 and being guided by a suitable guide pin 90 formed integrally with the cam 86. It is the function of the spring 88 to maintain the outer spindle 36 firmly against the inner spindle 35, whereby the outer spindle 35 will follow the inner spindle 35 to its extreme left position shown in Fig. 1 while resisting the movement of the two spindles to the right into the position of Fig. 2.

Let us say now that the spindle 36 has been moved into the position of Fig. 2 wherein it is locked against rotation and locks also the spindle operator 2?. The outer knob is now, of course, held against rotation and entry through the door on which the lock is applied is impossible. Of course, anyone can operate the inside knob and the inside spindle 35 to retract the latchbolt so that egress is possible. With the parts thus positioned in Fig. 2, should a key be inserted in the key plug and the plug rotated, its bar 35 will rotate cam bringing the cam surface 8? against the cam surface 190. It will now be possible to move the cylindrical member 18a to the left, bringing the slot 8 I 11 away from the rib 32, Whereupon the parts will be positioned as shown in Fig. 1. At this point, the outer spindle 36 has been released for rotation and may rotate with the knob 59 and spindle operator 2! to retract the latchbolt through rollback l3.

During this movement of the spindle 35 to the left, the spindle 35 was also moved to the left, compressing the spring 48 and bringing shoulder Ma, defining the left end of the slot 43 of spindle 35, away from the lug 4| of the slide 42. This movement of the inner spindle 35 does not in any way affect the positioning of the slide #32 and the push button [8 and its associated mechanism, including push piece 63 that holds slide 42 in the position of Fig. 2. Therefore, once the latchbolt is retracted and the knob I9 is thereafter allowed to move with the cylinder and key plug 22 back to the position of Fig. 2, the spindle 33 must also move to the right to its position of Fig. 2. In other words, the parts will once again be locked, and should re-entry be desired, the key plug 22 must once again be rotated.

The operation of my invention will now be quite apparent. Thus, it will be seen that with the parts in the initial position of Fig. 1, a full depression of push button iii will effect a locking of the outer spindle 36 and the outer knob i9 through a movement of the spindle 33 to the right, This movement is effected through the intermediary of the relatively strong spring 58 operating against the relatively weak spring 83 that holds the outer spindle 35 firmly against the inner spindle 35. With the parts locked as in Fig. 2, they may be released by a slight inward movement of the push button 18 sumoient to bring surface 58a of the detent 58 against the dog 61. If the parts remain locked as in Fig.

operation from the outside is possible through actuation of the key plug- 22. Thus, rotation of the key plug 22 will through the cam surface 8.! operate a cam surface 79a, and effect 'a movement of the spindle 36 to the left from its position of Fig. l sufficient to unlock the spindle and bring it into the square bore of the rollback l3. Such movement does not disturb the push button It and its associated mechanism, but effects only the compression of the spring 48 so that a return of the cylinder 2-13 and key plug 22 with the knob I9 back to the position of Fig. 2 will effect the return of the parts into the locking position through the operation of the spring 48. Therefore, once the locking mechanism is locked from the inside, it can be released permanently by a slight depression of the push button [8. It can be released temporarily at any time from the outside by rotation of the key plug 22.

Under some circumstances, the key plug 22 may be arranged to operate through a particular distance so that it will lock the outer spindle 36 in release position even though the push piece 63 is locked by dog ill in its position of Fig. 2. Under such circumstances, the latchbolt may be retracted by both the inside and outside knobs regardless of the positioning of the push button and its control mechanism.

Referring now to Figs. 8, 9, and 10, I show a modification of the construction of the inside knob. Thus, the inside knob Ila of Fig. 8 is substantially a duplicate of the knob ill of Fig. 1, except that it carries, instead of the push button and its associated mechanism, a cylinder lock 9! equipped with a key plug 92 that rotates an end bar 93 adapted to rotate a cam 94, best shown in Fig. 9. Cam 94 is mounted within the inside spindle operator 29 and is held in position by the scalp 45, this being the same scalp that is utilized in the first modification described to hold slide 42 in position.

Cam 94 is formed with a cam surface 95 adapted for coaction with the curved surface 45 at the left end of slide 42, this being the same curved surface that in my first modification fits against the end of the scalp 46. .In the modification of Fig. 8, rotation of the key plug 92 will cause the cam surface 95 of cam 94' to coact with the curved surface 45 of slide 42 to move the said slide 42 in exactly the same manner as the said slide is actuated by push piece 63 and its pin 66 in my first modification. In other words, rotation of the key plug 92 will eifect the locking of the outer spindle in the same manner as this locking is accomplished by push button 18 in the first modification. The particular construction described is intended for use in installations where unauthorized locking of the outside knob or unauthorized releasing of the outside knob must be prevented. Thus, no one can lock or unlock the outside knob of the modification of Fig. 8 except by a key out to fit the key plug 92. In all other respects, the operation of the parts of Figs. 8, 9, and is exactly the same as that of my earlier modification and need not further be described here.

The operation and functioning of my invention should now be clear to those skilled in the art.

I now claim:

1. In a lock of the class described,- a rollback, a pair of spindles, means mounting said spindles for sliding movement transversely relativelyto said rollback, both said spindles being normally positioned with a part thereof in operating relation to said rollback, an operator, means mounting said operator for movement relatively to said rollback, spring means extending between said operator and said spindles whereby movement of said operator efiects movement of said spindles transversely of said rollback through the intermediary of said spring means, and means for moving said spindles relatively to said operator against the pressure of said spring means.

2. Ina lock of the class described, a rollback having a bore, a pair of spindles slidable in said bore transversely relatively to said rollback and each adapted to rotate said rollback, both said spindles being normally positioned in said bore with a part thereof in operating relation to said rollback, an operator, means mounting said operator for movement relatively to said rollback, and spring means extending between said operator and said spindles whereby movement of said operator effects movement of said spindles through the intermediary of said spring means to move one of said spindles out of said rollback bore.

3; In a lock of the class described, a rollback having a bore, a pair of spindles slidable in said bore transversely relatively to said rollback and each adapted to rotate said rollback, both said spindles being normally positioned in said bore with a part thereof in operating relation to said rollback, an operator, means mounting said operator for movement relatively to said rollback, spring means extending between said operator and said spindles whereby movement of said operator effects movement of said spindles through the intermediary of said spring means to move one of said spindles out of said rollback bore, an outside knob for rotating said one of said spindles to rotate said rollback, and means carried by said knob for moving said spindle back into said rollback bore against the pressure of said spring means. 7

4. Ina lock. of the class described, a housing, a rollback in said housing having a bore, an inside and an outside spindle rotatably mounted on said housing with both spindles having portions in said rollback bore in operating relation to said rollback and slidable relatively thereto, an operator, means mounting said operator on said housing for movement relatively thereto, and spring means extending between said operator and said spindles whereby movement of said operator effects movement of said spindles through the intermediary of said spring means to move said outside spindle out of the rollback bore.

5. In a lock of the class described, a housing, a rollback in said housing, an inside and an outside spindle rotatably mounted on said housing with both spindles in operating relation to said rollback and slidable relatively thereto, an operator, means mounting said operator on said housing for movement; relatively thereto, and spring means extending between said operator and said spindles whereby movement of said operator efiects movement of said spindles through the intermediary of said spring means.

6. In a lock of the class described, a rollback having a bore, a pair of spindles slidable in said bore transversely relatively to said rollback and eachadapted to rotate said rollback, both said spindles being normally positioned in said bore with a part thereof in operating relation to said rollback, an operator, means mounting said operator for movement relatively to said rollback, spring means extending between said operator and spindles whereby movement of said operator eiTects movement of said spindles through the intermediary of said spring means to move one of said spindles out of said rollback bore, and means for moving said spindle back into said rollback bore against the pressure of said spring means.

7. In a lock of the class described, a housing, a rollback in said housing having a bore, an inside and an outside spindle rotatably mounted on said housing with both spindles having portions in said rollback bore in operating rotation to said rollback and slidable relatively thereto, an operator, means mounting said operator on said housing for movement relatively thereto, spring means extending between said operator and said spindle whereby movement of said operator 'efiects movement of said spindles through the intermediary of said spring means to move said outside spindle out of the rollback bore, and key operated means carried by said housing for moving said spindle back into said rollback bore against the pressure of said spring means. 8. In a lock of the class described, a housing, a rollback in said housing having a bore, an inside and an outside spindle rotatably mounted on said housing with both spindles having portions in said rollback bore in operating relation to said rollback and slidable relatively thereto, an operator, means mounting said operator on said housing for movement relatively thereto, and spring means extending between said operator and said spindle whereby movement of said operator effects movement of said spindles through the intermediary of said spring means to move said outside spindle out of the rollback bore, inside and outside knobs for rotating said inside and outside spindles, means carried by said inside knob for effecting movement of said operator to move said outside spindle out of said rollback bore, and means carried by said outside knob for moving said spindle back into said rollback bore against the pressure of said spring means. 9. In a lock of the class described, a housing, a rollback in said housing having a bore, an inside and an outside spindle rotatably mounted on said housing with both spindles having portions in said rollback bore in operating relation to said rollback and slidable relatively thereto, an operator, means mounting said operator on said housing for movement relatively thereto, and spring means extending between said operator and said spindle whereby movement of said operator effects movement of said spindles through the intermediary of said spring means to move said outside spindle out of the rollback bore, an outside knob for rotating said outside spindle to actuate said rollback when said spindle is within said rollback bore, and key operated means carried by said knob for moving said spindle back into said rollback bore against the pressure of said spring means.

10. In a lock of the class described, a rollback, a pair of spindles slidable transversely relatively to said rollback and each adapted to rotate said rollback, both said spindles being normally positioned with a part thereof in operating relation to said rollback, a push piece for pushing said spindles relatively to said rollback whereby to move the outer of said spindles into locked position, a knob for rotating the inner of said spindles, a dog for locking said push piece in depressed position to maintain said outer spindle looked, a push button in said knob for pushing said push piece into its depressed position upon a first push on said push button, and means where-- by said push button moves said dog to release said push piece for outward movement out of depressed position when said push button is pushed inwardly a second time.

11. In a lock of the class described, a rollback having a bore, a pair of spindles slidable in said bore transversely relatively to said rollback and each adapted to rotate said rollback, both said spindles being normally positioned in said bore with a part thereof in operating relation to said rollback, a push piece, means mounting said push piece for movement relatively to said rollback with a part of said push piece adapted to move said spindles to position one of said spindles out of said rollback bore, a knob, a dog for locking said push piece in depressed position to maintain said one spindle looked, a push button in said knob for pushing said push piece into its depressed position upon a first push on said push button, and means whereby said push button moves said dog to release said push piece for outward movement out of depressed position when said push button is pushed inwardly a second time.

12. In a lock of the class described, a rollback, a pair of spindles slidable transversely relatively to said rollback and each adapted to rotate said rollback, both said spindles being normally positioned with a part thereof in operating relation to said rollback, a push piece for pushing said spindles relatively to said rollback whereby to move the outer of said spindles into locked position, a dog for locking said push piece in de pressed position to maintain said outer spindle looked, a push button for pushing said push piece into its depressed position upon a first push on said push button, and means whereby said push button moves said dog to release said push piece for outward movement out of depressed position when said push button is pushed inwardly a second time.

13. In a lock of the class described, a rollback having a bore, a pair of spindles slidable in said bore transversely relatively to said rollback and each adapted to rotate said rollback, both said spindles being normally positioned in said bore with a part thereof in operating relation to said rollback, a push piece, means mounting said push piece for movement relatively to said rollback with a part of said push piece adapted to move said spindles to position one of said spindles out of said rollback bore, a dog for locking said push piece in depressed position to maintain said one spindle locked, a push button for pushing said push piece into its depressed position upon a first push on said push button, and means whereby said push button moves said dog to release said push piece for outward movement out of depressed position when said push button is pushed inwardly a second time.

14. In a lock of the class described, a rollback having a bore, a pair of spindles slidable in said bore transversely relatively to said rollback and each adapted to rotate said rollback, both said spindles being normally positioned in said bore with a part thereof in operating relation to said rollback, an operator, means mounting said operator for inward movement relatively to said rollback, spring means extending between said operator and said spindles whereby said inward movement of said operator effects movement of said spindles through the intermediary of said spring means to move one of said spindles out of said rollback bore, means locking said operator in its inward position once it is depressed into said posi- :aevaon tion, an outside knob tor rotating said oneof said spindles to rotate said rollback, and means carried by said knob for moving said spindle back into said rollback bore against the pressure of said spring means while said operator remains locked in its inward position.

15. In a lock of the class described, a rollback having a bore, a pair of spindles slidable in said bore transversely relatively to said rollback and each adapted to rotate said rollback, both said spindles being normally positioned in said bore with a part thereof in operating relation to said rollback, an operator, means mounting said operator for inward sliding movement relatively to said rollback, means extending between said op erator and said spindles whereby movement of said operator effects movement of said spindles through the intermediary of said means to move one of said spindles out of said rollback bore, means locking said operator in its inward position once it is depressed into said position, an outside knob for rotating said one of said spindies to rotate said rollback, and means carried by said knob for moving said spindle back into said rollback bore while said operator remains locked in its inward position.

16. In a lock of the class described, a housing, a rollback in said housing, an inside and an outside spindle rotatably mounted on said housing with both spindles in operating relation to said rollback and slidable relatively thereto, an operator, means mounting said operator on said housing for inward and outward movement relatively thereto, spring means extending between said operator and said spindles wliereby'inward movement of said operator effects movement of said spindles through the intermediary of said spring means, means for locking said operator in its inward position, an inside knob having a push button, means whereby a first push on said push button moves said operator inwardly whereupon it is locked, and means whereby a second push on said push button releases said operator from said locking means for outward movement.

17. In a lock of the class described, a housing, a rollback in said housing, an inside and an outside spindle rotatably' mounted on said housing with both spindles in operating relation to said rollback and slidable relatively thereto, an operator, means mounting said operator on said housing for inward and outward movement relatively thereto, means extending between said operator and said spindles whereby inward movement of said operator eiiects movement of said spindles through the intermediary of said means to move said outside spindle out of operative relation to said rollback, an outside knob for rotating said outside spindle to actuate said rollback, and key operated means carried by said knob for moving said spindle back into operative relation to said rollback while said operator remains in its inward position, said means extending between said operator and said spindles being constructed to permit said spindle movement.

18. In a lock of the class described, a housing, a rollback in said housing, an inside and an outside spindle rotatably mounted on said housing with both spindles in operating relation to said rollback and slidable relatively thereto, ancperator, means mounting said operator on said housing for movement relatively thereto, spring means extending between said operator and said spindles whereby movement of said operator effects movement of said spindles through the intermediary of said spring means to move said outside spindle out of operating relation to said rollback, inside and outside knobs for rotating said inside and outsidespindles, a key plug carried by said inside knob and rotatable for efiecting movement of said actuator to move said outside spindle out or operating relation to said rollback, and means carried by said outside knob for moving said spindle back into operative relation to said rollback against the pressure of said spring means.

19. In a lock of the class described, a push piece, a spring pressing said push piece to an unlocking position, locking means movable by said push piece when depressed against the force of said spring, a dog for locking said push piece in a depressed looking position, a push button for pushing said push piece into its depressed posi tion upon a first push on said push button whereupon it is locked by said dog, and means whereby said push button moves said dog to release said push piece for outward movement out of depressed position when said push button is pushed inwardly a second time.

20. In a lock of the class described, a push piece, a spring pressing said push piece to an unlocking position, locking means movable by said push piece when depressed against the force of said spring, a'dog for locking said push piece in a depressed locking position, a push button for pushing said push piece into its depressed position upon a first push on said push button whereupon said dog locks said push piece in said depressed locking position, a spring for pressing said push button outwardly away from said push piece to its original position, and a detent member movable with said push button for moving said dog out of locking position upon a second push on said push button whereby to release said push piece for movement by its spring to its unlocking position.

21. In a lock of the class described, a push piece, a spring pressing said push piece to an unlocking position, a dog for locking said push piece in a depressed locking position, a push button for pushing said push piece into its depressed position upon a first push on said push button, a detent carried by said push button and yieldingly held in a predetermined position relatively thereto, said detent moving said dog to a release position when said push button is pushed inwardly a predetermined distance, said detent thereafter releasing said dog to lock said push piece upon further inward pushing of said push button and push piece, a spring for pressing said pushbutton outwardly away vfrom said push piece to its original position, said detent during said outward movement functionally by-passing said dog to leave it in its position locking said push piece, and the inward movement of said push button and detent thereafter a limited distance effecting the release movement of said dog to release said push piece for movement by its spring toward its unlocking position.

22. In a lock of the class described, a push piece, a dog for locking said push piece in depressed position, a push button for pushing said push piece into its depressed position upon a first push on said push button, and means whereby said push button moves said dog to release said push piece for outward movement out of depressed position when said push button is pushed inwardly a second time.

23. In a lock of the class described, a push piece, a dog for locking said push piece in depressed position, a push button, a spring pressing said push button outwardly relatively to said push piece, the depression of said push button moving said push piece into a depressed position whereupon it is locked by said dog in said depressed position, a detent movable with said push button, means mounting said detent for positive movement with said push button inwardly in the direction of said push piece, and for yielding movement in a reverse direction, said detent having a cam surface for moving said dog out of locking position as it moves past said dog during the inward stroke of said push button and detent, said detent yieldingly moving relatively to said dog during the return stroke of said push button to leave said dog in locking position.

24. In a lock of the class described, a knob, a push piece carried by said knob, a dog for looking said push piece in depressed position relatively to said knob, a push button mounted on said knob, a spring pressing said push button outwardly of said knob and relatively to said push piece, the depression of said push button moving said push piece into a depressed position whereupon it is locked by said dog in said depressed position, a detent movable with said push button, means mounting said detent for positive movement with said push button inwardly of said knob, and for yielding movement in a reverse direction, said detent having a cam surface for moving said dog out of locking position as it moves past said dog during the inward stroke of said push button and detent, said detent yieldingly moving relatively to said dog during the return stroke of said push button to leave said dog in locking position.

25. In a lock of the class described, a locking member, a knob, a push piece carried by said knob, a dog for locking said push piece in depressed position relatively to said knob, a push button for pushing said push piece into its depressed position upon a first push on said push button, and means whereby said push button moves said dog to reelase said push piece for outward movement out of depressed position when said push button is pushed inwardly a second time.

26. In a lock of the class described, a locking member, a knob, a push piece carried by said knob, a dog for locking said push piece in depressed position relatively to said knob, a push button mounted on said knob, a spring pressing said'push button outwardly of said knob and relatively to said push piece, limit means for limiting the movement of said push button outwardly of said knob, the depression of said push button moving said push piece into depressed position whereupon it is locked by said dog in depressed position, a release part movable with said push button outwardly of said knob thereafter and relatively to said push piece and dog, said release part moving into position, once past and outside relatively to said dog, whereby upon depression of said push button thereafter it moves said dog to release said push piece for movement outwardly of said knob.

27. In a lock of the class described, a locking member, a knob, a push piece carried by said knob, a dog for locking said push piece in depressed position relatively to said knob, a push button mounted on said knob, a spring pressing said push button outwardly of said knob and relatively to said push piece, limit means for limiting the movement of said push button outwardly of said knob, the depression of said push button moving said push piece into depressed position whereupon it is locked by said dog in depressed position, a release part carried by said push button and lying in a position to extend inwardly of said dog when said push button is depressed, said release part being movable with said push button outwardly relatively to said knob thereafter and relatively to said push piece and dog, said release part moving into position, once past and outside relatively to said dog, whereby upon depression of said push button thereafter it moves said dog to release said push piece for movement outwardly of said knob.

FREDERIC K. HEYER.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 351,107 Hicks Oct. 19, 1886 474,519 Candee May 10, 1892 1,903,190 Neldner Mar. 28, 1933 1,968,285 Egan July 31, 1934 2,210,080 Hover et al Aug. 6, 1940 2,238,066 Mantz Apr. 15, 1941 2,389,819 Schlage Nov. 27, 1945 2,417,195 Hargreaves Mar. 11, 1947