US3127208A

US3127208A - Locking retractor slide

Info

Publication number: US3127208A
Authority: US
Publication date: 1964-03-31
Anticipated expiration: 1981-03-31

Description

March 31, 1964 F. J. RUSSELL LOCKING RETRACTOR SLIDE 3 Sheets-Sheet 1 Filed March 24, 1961 mm m- NIH? FkED JRUSSELL INVENTOR.

BY ww 140mm ATTO RN EYS March 31, 1 F. J. RUSSELL 3,127,208

LOCKING RETRACTOR SLIDE Filed March 24. 1961 3 Sheets-Sheet 2 E'QED J. RUS EL IN VHV TOR.

ATTOIQN EYS BY 340% 6 jiwnfl/Am/ March 31, 1964 F. J. RUSSELL LOCKINGRETRACTOR suns 3 Sheets-Sheet 3 Filed March 24, 1961 mm 1 2? mi R QN L GN Om INVENTOR.

Iksp J. Bus SELL ATTORNEYS United States Patent 3,127,208 LQCKING RETRACTOR SLIDE Fred J. Russeii, 38% Don Felipe Drive, Los Angeles, Calif. Filed Mar. 24, 1961, Ser. No. 98,067 7 Claims. (Cl. 292-336.3)

The invention relates to door locks and in particular locks wherein spindles rotate whereby to manipulate a retractor slide which in turn operates a latch bolt. The invention has special reference to a locking mechanism subject to operation by a key or turn button so that the door can be locked or unlocked from one side or the other or perhaps both sides.

When a key is turned in a lock or a button is turned or pressed, as in the case of a privacy lock, some mechanism within the lock must be set in operation to lock against manipulation by the knob which is ordinarily employed to open the door. The more common expedients resorted to in locks of this kind has been to interpose some blocking device between a stationary part of the lock mechanism and the spindle so that the spindle cannot be rotated. Consequently, when the spindle is incapable of rotation, there is no agency capable of Withdrawing the latch bolt and hence the door is locked. When this expedient is resorted to, the mechanical elements compacted into a device of this kind often become undependable. If the lock is one intended to be locked from either side in order to, say, block rotation of both spindles, each spindle in turn must be provided with some blocking means to anchor it to a stationary portion of the device and preferably also something to carry over motion from the key-actuated lock or button on one side to the other. Because of the number of parts necessary and the relatively precise machining needed to assure dependable operation, these expedients often run up the cost of an already expensive item to an undesirable level. At the same time the number of parts capable of going wrong is also unnecessarily large, which adds to the undesirable features as well as the cost.

It is therefore among the objects of the invention to provide to provide a new and important locking device wherein the mechanism is blocked against opening by actually blocking movement of the retractor slide.

Another object of the invention is to provide a new and improved door lock wherein simple expedients are resorted to whereby to transfer motion from a key or button mechanism through the lock by the shortest route, thereby to quickly and positively lock the mechanism.

Still another object of the invention is to provide a new and improved locking mechanism for the retractor slide of a lock which can be operated by a key or locking button on either side but wherein the mechanism is simplified whereby to reduce the number and complexity of the parts as well as to improve the strength and dependability of the locking.

Still another object of the invention is to provide a new and improved simple, direct, blocking mechanism for locking operating parts of a door lock against opening which is not hampered in its operation by any variation in the resting positions of the knobs.

With these and other objects in view, the invention consists in the construction, arrangement and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter set forth, pointed out in the appended claims and illustrated in the accompanying drawings.

In the drawings:

FIGURE 1 is a longitudinal sectional View of the assembled device in locked position.

FIGURE 2 is a longitudinal sectional view of the device similar to FIGURE 1 in unlocked position.

FIGURE 3 is a cross-sectional view taken through center line of cam slots on the line 3-3 of FIGURE 1.

FIGURE 4 is a cross-sectional View of the device taken through center line of cam slots on the line 44 of FIGURE 2.

FIGURE 5 is a cross-sectional view of the device taken on the line 55 of FIGURE 1.

FIGURE 6 is a cross-sectional view similar to FIG- URE 5 but showing the retractor slide free and moved back as it would be in the act of opening the door.

FIGURE 7 is a cross-sectional view taken on the line 7-7 of FIGURE 1.

FIGURE 8 is a fragmentary transverse view taken on the line 88 of FIGURE 5.

FIGURE 9 is a fragmentary transverse View taken on the line 9-9 of FIGURE 6.

FIGURE 10 is a longitudinal sectional view of the assembled device in locked position as taken on the line Ill-10 of FIGURE 1.

In an embodiment of the invention chosen for the purpose of illustration there is shown the necessary parts of a door lock mounted in an opening 10 in a door 11. The parts consist in part of a two-piece frame 12, 12' enclosed in a housing 13, the frame having mounted thereon an outside spindle bearing 14 and an inside spindle bearing 15. A transversely reciprocating retractor slide 16 is manipulated alternatively by an outside tubular spindle 17 or an inside tubular spindle 18. The special mechanism featured in the invention herein disclosed consists in the main of what can be generally described as a blocker assembly capable of moving a blocker 19, shown in cross-section in FIGURES 1 and 2, from the position shown in FIGURE 2 to the position shown in FIGURE 1 where it lays behind the retractor slide 16, making it im possible to move the retractor slide by spindle operation to an unlocked position.

To more clearly understand the operation of the device, attention is directed to the structure and relationship of the retractor slide 16 to which is attached to a tailpiece 20 of a latch bolt (not shown) so that when the slide is moved in a direction from right to left, as viewed in FIG- URES 5 and 6, the latch bolt (not shown) will be withdrawn and the door will be unlatched.

When the retractor slide is unlocked and free to be moved, roll-backs 21 on the outside tubular spindle 17 or roll-backs 22 on the inside tubular spindle 18 are capable of being moved against

retractor shoulders

23 or 24, suggested by broken lines in FIGURES 5 and 6, depending on the direction of rotation, thereby to manipulate the retractor slide. A spring keeper 25 of substantially conventional construction contained within the housing 13 engages one end of a spring means 26, the other end of which is impressed against the retractor slide in the customary manner in order normally to urge the slide in a direction from left to right, as viewed in FIG- URES 5 and 6.

A cam sleeve 4%) is rotatably secured within the spindle 17 between a knob retainer 217 and a washer 49, the tabs 50 and 51 of which extend into openings 52 and 53, respectively, in the tubular spindle 17. The cam sleeve 49 includes a dovetail washer 41 which is joined with and a part of the cam sleeve 40. The dovetail washer has a noncircular opening 141 therein as shown in FIG- URE 7. This opening includes the

shoulders

60, 61, 62, and 63. On opposite sides of cam sleeve 40 are two

cam slots

42 and 43 which extend in a somewhat oblique circumferential direction, as is apparent in FIGURES 1, 2, 3, and 4.

Within the inside diameter of the cam sleeve 44) is located a blocker sleeve 46. The blocker 19 is secured to the end of blocker sleeve 46 by means of an. annular extension 55 on the blocker sleeve and snap ring 56.

On opposite sides of spindle 17 are located two

spindle slots

117 and 118, as seen in FIGURE 10. These slots extend axially along a certain length of spindle 17.

P1118

44 and 45, are located in and are a part of blocker sleeve 46 and extend outwardly from said blocker sleeve through

cam slots

42 and 43 respectively and also through

spindle slots

117 and 118 respectively. Thus, when cam sleeve 40 is rotated in one direction, the action of the

cam slots

42 and 43 on

pins

44 and 45 makes the blocker sleeve 46 and blocker 19 move axially Within spindle 17 from left as shown in FIGURE 2 to right as shown in FIGURE 1. The

spindle slots

117 and 118 limit the movement of the

pins

44 and 45 and therefore the movement of the blocker sleeve 46 to an axial direction within the spindle 17. When cam sleeve 40 is rotated in the opposite direction, the blocker sleeve 46 and blocker 19 move axially Within spindle 17 from right as shown in FIGURE 1 to left as shown in FIGURE 2.

To hold a hooked end 57 of the blocker in correct POSI- tion, there is provided a slot 58 in the outside sleeve bearing 14. The slot extends within the right-hand end of the sleeve hearing, as viewed in FIGURES l and 2, into the frame 12 so that the hooked end 57 when properly operated can be passed into a chamber 59 within the interior of the frame, 12, 12' to the position shown in FIGURE 1. An opening 54 in outside tubular spindle 17 extends circumferentia-lly about 106 degrees so that the outside tubular spindle 17 can be rotated freely without interference from the blocker 19' in order to manipulate the retractor slide 16 in the normal manner when it is not blocked by blocker 19 (shown in FIGURE 2).

Nonrotatably confined in a conventional manner within the outside tubular spindle is an outside key-operated mechanism 27 which is joined rotationally with a tailpiece 31. The tailpiece 3 1 extends into the non-circular opening 141 (see FIGURE 7) of the dovetail washer 41. When rotated in one direction by operation of the outside key-operated mechanism 27, the tailpiece 31 engages the shoulders 60 and 63 of the dovetail washer 41, thus rotating cam sleeve 40 in one direction. When rotated in the other direction, the tailpiece 31 engages the

shoulders

61 and 62 of the dovetail washer 41, thus rotating cam sleeve 40 in the opposite direction. Though not shown in detail, the same relationship exists between a tailpiece 36 of an inside key-operated mechanism 28 housed in the inside tubular spindle 18 and an extension sleeve 33.

In order to rotationally connect the inside key-operated mechanism 28, its tailpiece 36 and the extension sleeve 33 (all located in the inside tubular spindle 18) with the cam sleeve 40 (located in the outside tubular spindle 17), a shaft 29 is non-rotatably joined at one of its ends to the extension sleeve 33, its other end comprising two shoulders 129 and 229' (see FIGURE 7) which extend through the non-circular opening 141 of the dovetail washer 41. Shaft 29 also includes a shoulder 48 which at all times is urged against the dovetail washer 41 by a coiled spring 47, one end of which bears against shoulder 48 and the other end of which bears against blocker sleeve 46, thus holding shoulders 12 9 and 229' of shaft 29 within noncircular opening 141 of dovetail washer 41 at all times. The left-hand end of shaft 29 (as shown in FIGURE 2) includes a recess 30 which clears the tailpiece 31. When shaft 29 is rotated by the inside key-operated mechanism 28, the shoulders 129 and 229 (see FIGURE 7) engage shoulders 60, 63 or

shoulders

61, 62, respectively, of dovetail washer and thus rotate cam sleeve 40.

In operation let it be assumed that the parts are in unlocked position, as shown in FIGURE 2, which would.

also prevail with respect to the parts as shown in FIG- URES 4, 6 and 9. The blocker 19 and its hooked end 57 is withdrawn and the retractor slide 16 is free to reciprocate when acted upon by one or another of the roll-

backs

21 or 22. Obviously the roll-backs rare operated by actuation of the tubular spindles in the customary fashion which is the movement depended upon for withdrawing the latch bolt (not shown) through the agency of the tailpiece 20. In this position the

cam slots

43 and 42 visible in FIGURES 3 and 4 are rotated to such a position that their respective pins 44 land 45 are at the outer ends of the cam slots 43 and 42 (cam slot 43 shown in FIGURE 2). When the outside key-operated mechanism 27 is then manipulated, the tailpiece 3-1 is rotated in a counter-clockwise direction (see FIGURE 7), which in turn rotates the cam sleeve 40. This motion forces the

pins

45 and 44 down the

cam slots

42, 43 and since the

pins

45 and 44 can only move axially, being channeled in outside tubular spindle slots 117 and 118 (see FIGURE 10), the pins in consequence will shift axially from left to right, as viewed in FIGURES 1 and 2, until they reach the other end of the cam slot, as shown in FIGURE 1.

As the

pins

44 and 45 are shifted axially, so also is the blocker sleeve '46 shifted axially from left to right, as shown in FIGURES 1 land 2, moving as described from the location shown in FIGURE 2 to the location shown in FIGURE 1. The hooked end 57 slides freely in the slot 58 until it enters the chamber 59. Since the tubular spindles are not rotated during manipulation of the outside key-operated mechanism 27, the retractor slide 16 will maintain the position shown in FIGURE 1 and hence the hooked end 57 will fall into a position of engagement with the inside end of the retractor slide 16, HS shown in FIGURE 1. When in this position the retractor slide 16 cannot move from right to left, as viewed in FIGURE 5. Therefore, although an attempt may be made to rotate either of the tubular spindles 17 or 18 in the customary manner to impress the roll-back against one or another of the retractor shoulders 23, 24, the rotation will be unavailing to manipulate the tailpiece 2% for the latch bolt because the retractor slide is blocked against movement. This is accomplished without it being necessary to interpose any blocking element between the frame or other stationary portion of the device and either of the tubular spindles.

When the device thereafter is to be unlocked, the tailpiece 31 of the outside key-operated mechanism 27 is rotated in a contrary or clockwise direction (see FIG- UE 7). This causes the cam sleeve 40 to be rotated in a corresponding direction and movement will force the

pins

44 and 45 along the

respective cam slots

42 and 43 to the opposite ends which will cause the pins and the attached blocker sleeve 46 to be moved in a direction from right to left, as viewed in FIGURES 1 and 2. This movement is accompanied by a corresponding movement of the blocker 19 and the hooked end 57 from the position of FIGURE 1 leftward to the position of FIGURE 2, within the slot 58. Thereafter the retractor slide is again free for manipulation in the customary fashion by operation of the tubular spindles.

Locking and unlocking, as accomplished by manipulation of outside key-operated mechanism 27 and its tailpiece '31, may alternately be accomplished by manipulation of inside key-operated mechanism 28 and its shaft 29. In effect, mechanism 28 substitutes for mechanism 27, and shaft 29 substitutes for tailpiece 31.

While the invention has herein been shown and de scribed in what is conceived to be the most practical and preferred embodiment, it is recognized that departures may be made therefrom within the scope of the invention, which is not to be limited to the details disclosed herein but is to be accorded the full scope of the claims so as to embrace any and all equivalent devices.

Having described the invention, what I claim as new and desire to secure by Letters Patent is:

1. A door lock comprising a relatively stationary frame having a bearing member on one side thereof, a tubular spindle rotatably mounted in the bearing member and having roll-back means thereon, a latch retractor slide member reciprocatably mounted in said frame and having a path of movement in a transverse direction, and means on the slide member engageable with said roll-back means for operation thereby, and a blocker mechanism for said slide member comprising a shaft rotatably mounted within said tubular spindle, a cam sleeve within said tubular spindle surrounding said shaft, said shaft having an engagement with said cam sleeve when moved in a rotational direction, said cam sleeve having an oblique cam slot therein, a blocker s eeve mounted within said cam sleeve, said blocker sleeve and said cam sleeve being subject to rotation relative to each other, a cam on said blocker sleeve extending into the cam slot, a blocker on said blocker sleeve having a portion thereof extending radially and an extension on said first portion extending in an axial direction into said frame, relatively stationary means in said lock having an axially sliding and nonrotational engagement with said blocker whereby to inhibit rotation of said blocker relative to said retractor slide, said blocker being slidable bet-ween a blocking position in the path of movement of said slide and an unblocking position, a portion of said retractor slide being in engagement with said blocker in blocking position whereby to inhibit movement of said slide by rotation of said spindle.

2. A door lock comprising a relatively stationary frame having inside and outside bearing members on respectively opposite sides, an outside spindle rotatably mounted in the outside bearing member and having roll-back means thereon and an inside spindle rotatably mounted in the inside bearing member and having roll-back means thereon, a latch retractor slide member reciprocatably mounted in said frame and having a path of movement in a transverse direction, and means on the slide member engageable with said roll-back means for operation thereby, and a blocker mechanism for said slide member comprising a shaft rotatably mounted within said spindles and extending through said slide member, a cam sleeve within one only of the spindles, said shaft having an engagement with said cam sleeve when moved in a rotational direction, said cam sleeve having an oblique cam slot therein, a blocker mounted within said cam sleeve, said blocker and said earn sleeve being subject to rotation relative to each other, a cam on said blocker extending into the respective cam slot, a blocker having one portion element on said blocker extending radially therefrom and another portion extending in a direction substantially parallel to the shaft, relatively stationary means in said lock having an axially sliding and nonrotational engagement with said blocker whereby to inhibit rotation of said blocker relative to said retractor slide, said blocker being slidable between a blocking position in the path of movement of said slide and an unblocking position, an inner portion of said retractor slide while in extended position being in engagement with said blocker when the blocker is in blocking position whereby to inhibit movement of said slide by rotation of said spindles.

3. A door lock comprising a relatively stationary frame having inside and outside bearing members on respectively opposite sides, an outside spindle rotatably mounted in the outside bearing member and having rollback means thereon and an inside spindle rotatably mounted in the inside bearing member and having rollback means thereon, a latch retractor slide member reciprocatably mounted in said frame having a path of movement in a transverse direction and means on the slide member engageable with said roll-back means for operation thereby, and a blocker assembly for said slide member comprising a shaft rotatably mounted within only the outside spindle, a cam sleeve within the outside spindle surrounding said shaft, said shaft having a non-rotatable engagement with said cam sleeve when moved in a rotational direction, said cam sleeve having a pair of circumferential oblique cam slots therein, said outside spindle having opposite axially extending slots therein respectively adjacent said cam slots, a blocker sleeve having a portion thereof rotatably mounted within said cam sleeve and surrounding said shaft, cams on said blocker sleeve extending into the respective cam slots and axially extending slots, another portion of said blocker sleeve comprising a blocker on said blocker sleeve extending radially outwardly and having an end extending axially endwardly therefrom, said blocker and said blocker sleeve being movable axially into and out of blocking position in said path of movement in response to rotation by said shaft, an inner edge portion on the exterior of said retractor slide while in extended position being in engagement with said end of said other portion of said blocker when the blocker is in blocking position whereby to inhibit movement of said slide by rotation of said spindles, and a shaft extension in said inside spindle non-rotatably secured to said shaft and rotatable to effect operation of said cam sleeve alternatively with respect to operation through the outside spindle.

4. A door lock comprising a relatively stationary frame having a bearing member on at least one side thereof, a tubular spindle rotatably mounted on the bearing member and having roll-back means thereon, a latch retractor slide member reciprocatably mounted in said frame for movement in a transverse direction between an extended locked position and a withdrawn position, a tail piece extending from a latchbolt, said tail piece being engageable in an outward direction only with said slide, and means on the slide member engageable with said roll-back means for operation thereby, and a blocker assembly for said slide member comprising a first cam element within said tubular spindle, a second cam element in operating engagement with the first cam element, actuating means extending axially through the spindle from one of the cam elements to the exterior, and a blocker in operating engagement with the other of said cam elements whereby said blocker is movable in response to actuation of said cam elements between blocking and unblocking positions, said retractor slide having a shoulder means on the exterior in alignment with the blocker when the retractor slide is in locked position and having a position of engagement with said blocker when the blocker is advanced to blocking position, said position of engagement being at a location removed from said tail piece whereby the retractor slide is held in said locked position while said tail piece remains free from engagement with said blocker.

5. A door lock adapted to operate a latch bolt and comprising a relatively stationary frame having a bear ing member on at least one side thereof, a tubular spindle rotatably mounted on the bearing member and having roll-back means thereon, a transverse slideway in said frame, a separate latch retractor slide member slidably mounted in said slideway, a tail piece extending from a latch bolt, said tail piece extending into smd slide member, said slide member being movable transversely into operating engagement with the tail piece in only an unlatching direction, said slide member being reciprocatably mounted in said frame for movement in transverse direction between an extended locked position and withdrawn position, and means on the slide member engageable with said roll-back means for operation thereby, and a blocker assembly for said slide member comprising a first cam element within said tubular spindle, a second cam element in operating engagement with the first cam element, one of said cam elements being slidable in an axial direction, a blocker in operating engagement with the cam element which is slidable in an axial direction, actuating means extending axially through the spindle from the other cam element whereby said blocker is slidable in response to actuation of said cam elements between blocking and unblocking positions, said retractor slide having a shoulder means on an inside exterior edge thereof in alignment with the blocker when the retractor slide is in locked position and engageable with said blocker when the blocker is advanced to blocking position whereby the retractor slide is held in said locked position.

6. A door lock comprising a relatively stationary frame having a bearing member on each side thereof, a tubular spindle rotatably mounted in each of said bearing members and each said spindle having roll-back means thereon, a latch retractor slide member being slotted on the sides and being reciprocatably mounted in said frame for movement in transverse direction between an extended locked position and a withdrawn position and means on the slide member engageable with said roll-back means for operation thereby, and a blocker assembly for said slide member comprising a first cam element within one only of said tubular spindles, a second cam element in operating engagement with the first cam element, a common actuating means located in all conditions of operation in a position extending axially through the spindles and through the slotted sides of the slide member from one of the cam elements to the exterior on both sides of the lock, and a blocker in operating engagement with the other of said cam elements whereby said blocker is movable in response to actuation of either of said actuating means and said cam elements between blocking and unblocking positions, said retractor slide having a shoulder means in alignment with the blocker when the retractor slide is in locked position and engageable with said blocker when the blocker is advanced to blocking position whereby the retractor slide is held in said locked position.

7. A door lock comprising a relatively stationary frame having a bearing member on at least one side thereof, a tubular spindle rotatably mounted on the hearing member and having roll-back means thereon, a latch retractor slide member reciprocatably mounted in said frame for movement in a transverse direction between an extended locked position and a withdrawn position and means on the slide member engageable with said roll-back means for operation thereby, and a blocker assembly for said slide member comprising a cam sleeve rotatably mounted in said spindle and having an obliquely extending camway thereon, a blocker having a portion thereof having an axially movable and non-rotatable mounting in said sleeve, and a pin on said blocker extending into engagement with said camway, rotatable actuating means extending through the spindle from said sleeve to the exterior, said blocker having another portion extending radially outwardly of the sleeve and axialiy toward said retractor slide, said other portion of said blocker being slidable in response to actuation of said sleeve between blocking and unblocking positions, said retractor slide having an inwardly facing shoulder means in alignment with the blocker when the retractor slide is in locked position and engageable with said blocker when the blocker is advanced to blocking position whereby the retractor slide is held in said locked position.

References Cited in the file of this patent UNITED STATES PATENTS 1,776,945 Georgison Sept. 30, 1930 1,899,380 Arste Feb. 28, 1933 2,434,288 Schlage Jan. 13, 1948

Claims

4. A DOOR LOCK COMPRISING A RELATIVELY STATIONARY FRAME HAVING A BEARING MEMBER ON AT LEAST ONE SIDE THEREOF, A TUBULAR SPINDLE ROTATABLY MOUNTED ON THE BEARING MEMBER AND HAVING ROLL-BACK MEANS THEREON, A LATCH RETRACTOR SLIDE MEMBER RECIPROCATABLY MOUNTED IN SAID FRAME FOR MOVEMENT IN A TRANSVERSE DIRECTION BETWEEN AN EXTENDED LOCKED POSITION AND A WITHDRAWN POSITION, A TAIL PIECE EXTENDING FROM A LATCHBOLT, SAID TAIL PIECE BEING ENGAGEABLE IN AN OUTWARD DIRECTION ONLY WITH SAID SLIDE, AND MEANS ON THE SLIDE MEMBER ENGAGEABLE WITH SAID ROLL-BACK MEANS FOR OPERATION THEREBY, AND A BLOCKER ASSEMBLY FOR SAID SLIDE MEMBER COMPRISING A FIRST CAM ELEMENT WITHIN SAID TUBULAR SPINDLE, A SECOND CAM ELEMENT IN OPERATING ENGAGEMENT WITH THE FIRST CAM ELEMENT, ACTUATING MEANS EXTENDING AXIALLY THROUGH THE SPINDLE FROM ONE OF THE CAM ELEMENTS TO THE EXTERIOR, AND A BLOCKER IN OPERATING ENGAGEMENT WITH THE OTHER OF SAID