US3335586A

US3335586A - Lockable slider for slide fasteners

Info

Publication number: US3335586A
Authority: US
Inventors: Levine Abraham; Charles S Gehrie
Original assignee: Presto Lock Co Inc
Current assignee: Presto Lock Co Inc
Priority date: 1965-01-11
Filing date: 1965-01-11
Publication date: 1967-08-15
Anticipated expiration: 1984-08-15

Description

1967 A. LEVINE ETAL 3,335,586

LOCKABLE SLIDER FOR SLIDE FASTENERS Filed Jan. 11, 19 65 6 Sheets-Sheet l 3Q 46 no 64 78 [w f 26 x V W 4 1%] I 7 5 2a 44 34 52 so 5 58 60 50 24 F |E 3 INVENTORS ABRAHAM LEVNE AND BYCHARL-Eb $.GEHPJE ATTORNEY Aug. 15, 1967 A. LEVINE ETAL 3,335,586

LOCKABLE SLIDER FOR SLIDE FASTENERS Filed Jan. 11, 1965 6 Sheets-Sheet INVENTQRS ABRAHAM LEVI ME AMI:

CHARLES S. GEH RI E Aug. 15, 1967 LOCKABLE SLIDER FOR SLIDE FASTENERS Filed Jan. 11, 1965 6 Sheets-Shet Z INVENTORS ABRAHAM LEV\NEZ AND CHARLES S.G EHR\E A TORNEY A. LEVINE ETAL 3,335,586 r 1967 A. LEVINE ETAL 3,335,586

LOCKABLE SLIDER FOR SLIDE FASTENERS Filed Jan. 11, 1965 6 Sheets-Sheet 4 I36 202 lal X 44 120 ns INVENTORS ABRAHAM LEVINE AND CHARLE": a. c zwme ATTORNE g 15, 1967 A. LEVINE ETAL 3,335,586

LOCKABLE SLIDER FOR SLIDE FASTENERS Filed Jan. 11, 1965 6 Sheets-Sheet :j.

INVENTORS ABRAHAM LEVINE AND CHARLES s.qzHRu-:

ATTORNEY 15, 1967 A. LEVINE ETAL 3,335,586

LOCKABLE SLIDER FOR SLIDE FASTENERS Filed Jan. 11, 1965 6 Sheets-Sheet 6 INVENTORS ABRAHAM LEVINE AND CHARLE$ S. qEHnu:

United States Patent 3,335,586 LOCKABLE SLIDER FOR SLIDE FASTENERS Abraham Levine, Mend'ham, and Charles S. Gehrie, Montclair, N.J., assignors to Presto Lock Co., Inc., Garfield, NJJ., a corporation of New York Filed Jan. 11, 1965, Ser. No. 424,758 9 Claims. (CI. 70-68) ABSTRACT OF THE DISCLOSURE A lockable slider for slide fasteners which comprises a slider body and a pin type of pull member pivotally connected thereto. The pull member has a key operable locking mechanism mounted thereon. The locking mechanism includes a bolt which is resiliently mounted so that the bolt is resiliently maintained in its respective locked and unlocked positions. The slider body is provided with keeper means for cooperation with the bolt to maintain the pull member in locked position.

The invention relates to lockable sliders for slide fasteners, and is more particularly directed to improvements in lockable sliders of the type wherein the slider may be directly locked to the interlockable fastener elements of a slide fastener.

It has been proposed to provide lockable sliders for slide fasteners of a construction wherein a lock mechanism is mounted on the slider body so that the slider may be directly locked to fastener elements within the slider channel. Such prior art forms of lockable sliders increase the thickness of the slider body substantially and are unduly bulky. Also, in the prior art lockable sliders, substantial modification of the usual manufacturing proce dures has been required to permit incorporation or assembly of a lock mechanism with the slider body, some of such modifications requiring the elimination of the pull tab or member to which users of slide fasteners have become so accustomed.

An object of the invention is to provide a lockable slider wherein the pull tab or member has a lock mechanism associated therewith for cooperation with a keeper portion provided by the slider body to thereby permit retention of a pull assembly which is used in the usual and well-known way to open and close the slide fastener. Another object of the invention is to provide a lockable slider having a locking mechanism which does not appreciably increase the bulk of the slider.

A further object of the invention is to provide a lockable slider wherein the association of the lock mechanism with the slider does not necessitate any substantial change in the usual manufacturing process for making the slider with which the lock mechanism is associated.

These, and other objects, and advantages of the invention will be apparent from the following detailed description, taken in conjunction with the drawings showing several preferred embodiments of the invention, in which:

FIG. 1 is a top plan view, on an enlarged scale, of a lockable slider made in accordance with one embodiment of the invention;

FIG. 2 is a vertical cross-sectional view taken approximately in the plane of line 22 of FIG. 1, this view showing the slider in its locked condition; 1 I

FIG. 3 is a view similar to FIG. 2, this view showing the slider in its unlocked condition;

FIG. 4 is an exploded view showing in perspective the pull member and the several elements of the lock mechanism which are associated therewith to provide the pull assembly;

FIG. 5 is a view taken in the plane of line 5-5 of FIG. 2 showing the relationship of the frame and locking bolt members of the locking mechanism when the slider is in its locked condition;

FIG. 6 is a view similar to FIG. 5 showing the same elements in their relationship when the slider is in unlocked condition;

FIG. 7 is a top plan view, also on an enlarged scale, of a second embodiment of a lockable slider made in accordance with the invention;

FIG. 8 is a vertical cross-sectional view taken approximately in the plane of line 8-8 of FIG. 7, this view showing the relationship of the elements of the locking mechanism when the slider is in locked condition;

FIG. 9 is a view similar to FIG. 8, this view showing the slider in its unlocked condition;

FIG. 10 is an exploded view showing in perspective the several elements of the locking mechanism and the pull member with which they are associated in the embodiment of the invention illustrated in FIGS. 7-9;

FIG. 10A is a bottom plan view of the frame member used in the locking mechanism of the embodiment of FIGS. 7-10.

FIG. 11 is a top plan view showing the relationship of the bolt member, locking member and associated spring means of the locking mechanism when the slider is in the locked condition as shown in FIG. 8; and

FIG. 12 is a view similar to FIG. 11 showing the relationship of the elements when the slider is in the unlocked condition as shown in FIG. 9.

Generally, a lockable slider made in accordance with the invention includes what has been termed in the art a pin lock slider; that is to say, a slider body having a pull tab or member pivotally connected thereto, the pull member being provided with pin means positionable between adjacent fastener elements to prevent movement of the slider when the pull member lies in a position adjacent the top wing of the slider. In accordance with the invention, the top wing of the pin lock slider is formed at the end thereof opposite the neck end with keeper means, and the pull member has a bolt member slidably associated therewith for movement into cooperative relation with the keeper means whereby pivoting of the pull member from its position adjacent the top wing is prevented. The pull member is further provided with means, as an integral part of the bolt member or in the form of a separate part, for releasably lockingthe bolt member in cooperative relation with the keeper means to thereby lock the slider to the slide fastener.

In greater detail, and referring to the embodiment of the invention as illustrated in FIGS. 16, a lockable slider made in accordance with this form of the invention comprises the usual slider body 20 and a pull member 22. As shown in FIGS. 2 and 3, the slider body comprises a bottom wing 24 and a top wing 26 which are connected to one another at their upper ends by the usual diamond or neck 28. The bottom wing is provided with the usual, opposite inturned side flanges 30, and the top Wing is provided with the usual, opposite inturned side flanges 32. The flanged top and bottom Wings, together with the neck, furnish the usual internal channel of substantially Y-shape for the interlockable fastener elements of a pair of slide fastener stringers (not shown) which are respectively engaged and disengaged upon the movement of the slider in up and down directions. In this illustrated form of the invention, the top wing 26 is provided with an opening 34 which is in communication with a diverging arm of the internal Y-shaped slider channel.

As is common in pin lock sliders, the pull member 22,

is connected to the slider body or the top Wing of the slider body, and for this purpose the top wing 26 is provided with a lug 36 having a transverse opening 38 therethrough which provides a fixed axis bearing for the pivotal connection of the pull member to the slider body.

The pull member comprises a pair of laterally spaced arms 40, 40' having inturned ends 42, 42' providing trunnions which are received in the bearing opening 38. One of the arms is formed to furnish pin means 44 adapted to extend through the opening 34 when the pull member lies in a position, or in its doWn position, adjacent the top Wing. In such position the pin 44 is located between a pair of adjacent fastener elements of a stringer and movement of the slider is prevented. When the pull member is lifted, the slider may be moved to open or close the fastener.

In the illustrated form of the invention, the lug 36 is made in an elongated form so that it may also provide keeper means in addition to the bearing for the pivotal connection of the pull member to the top wing of the slider body. Thus, the central elongated lug 36, which extends longitudinally of the top wing, is provided with the transverse bearing opening 38 at the neck end of the slider and with an overhanging portion 46 at the opposite end of the lug. The overhanging portion 46 projects lengthwise beyond the lower end of the top wing 26, thereby providing a shoulder 48 lying in a plane substantially parallel with but spaced above the plane of the top surface of the top wing 26. While the bearing means 38 for receiving the trunnions of the pull member and the overhang or keeper means 46 may be formed as separate projections of the top wing, it is preferred that the bearing and keeper means both be made as portions of an elongated lug, as illustrated, thereby simplifying the dies for making the slider body. Also, while the slider body, including the bearing means for the pull member and the keeper means, may be made by blanking and forming operations, it is preferred to make the slider body including its lug, by die casting.

As shown in FIG. 4, the pull member 22 has the usual plate portion 50 beyond the arms 40, 40' which are formed to provide the inturned trunnions 42, 42' and the pin 44. The arms 40, 40' are made of a length so that the elongated lug 36 may be cleared to allow the pull member to assume its down position as shown in FIGS. 2 and 3. The plate portion 50 is provided with an aperture 52 near the outer extremity thereof for the insertion of a thong as is common in the art. The plate portion differs from the usual pull member in that it is provided with a central keyhole-shaped aperture 54 to allow passage of a key (not shown). Also, as shown in FIG. 4, the pull member is provided at opposite sides with pairs of longitudinally spaced shoulders 56, 56' and 57, 57 for a purpose to be subsequently described.

With the pull member 22 in its down position or lying adjacent the top wing as shown in FIG. 2, a bolt member 58, which is slidably mounted with respect to the plate portion 50, is movable beneath the shoulder 48 to block or prevent the pull member from being pivoted from its position adjacent the top wing. As shown in FIGS. 2, 3 and 4, the pull member 22 and the bolt member 58 have assembled therewith a frame member 60, a cap 62, and a key barrel 64 for the mounting of the bolt member and to permit the bolt member to be releasably locked in cooperative relation with the keeper means provided by the top wing of the slider body. The bolt member 58 is supported for sliding movement between the frame member 60 and the pull member 22 to a position where the bolt member is under the shoulder 48 (FIG. 2) and a position where the bolt member is clear of the shoulder (FIG. 3).

As shown in FIGS. 4-6, the frame member 60 is formed with a longitudinally extending channel 66 of a width to receive the bolt member 58 with a close but longitudinally slidable fit. The bottom wall 68 of the channel is provided with a central aperture 70 to allow the end of a key to be received therein and to furnish a bearing permitting the key to be properly rotated. The opposite side walls 72, 72' of the channel 66 are provided with notches, the wall 72 being provided with a notch 74, and

.4 the wall 72 with a pair of longitudinally spaced notches 76, 76' for a purpose to be subsequently explained. The frame member is formed with laterally spaced, horizontal surfaces 78, 78' for engagement with the underside of the plate portion 50 of the pull member when the parts are assembled. The horizontal surfaces terminate in opposite, laterally spaced, upstanding side walls 80, 80'. These walls may be arcuately shaped for the purpose of affording a pleasing design for the pull assembly. The frame is open at its ends, and the end thereof which is adjacent the slider body has the Wall 68 centrally notched at 82 to allow the overhang keeper projection 46 to be cleared when the pull member assembly is pivoted to an up position.

The bolt member 58 is made of spring steel or any suitable metal which furnishes the desired resiliency. As shown in FIGS. 4-6, the bolt member is generally U-shaped and has a base portion 84 and a pair of arms 86, 86' extending from the base portion. The arm 86 is provided with a projection 88 on the outer side thereof near the top of the arm. The inner side of the arm 86 is provided with a cut-out which furnishes a pair of longitudinally spaced, diverging shoulders 90, 90 adapted to be respectively engaged by the tang of a key. The arm 86' is provided with a tooth or detent 92 on the outer side thereof at the top of the arm. The space 94 between the arms 86, 86' allows a key to be extended therethrough so that the end of the key may be received in the bearing opening 70 of the frame member 60.

As best shown in FIG. 4, the cap 62 comprises a body portion 96 having a central keyhole-shaped aperture 98. The body portion 96 has opposite, laterally spaced, downwardly extending walls 100, 100, these walls being arcuately-shaped like the walls 80, 80 of the frame member 60. The walls 100, 100' are spaced apart a distance slightly greater than the walls 80, 80', and are respectively provided with longitudinally spaced, downwardly extending, connecting tangs 102 and 102. The front end of the cap, or its body portion 96, is centrally notched at 104 for alignment with the notch 82 of the frame member to allow clearance of the pull assembly with respect to the overhang or keeper means 46 on the slide-r body.

To assemble the parts of the pull assembly, the bolt member 58 is first laid in the channel 66 of the frame member 60 with the projection 88 located in the recess 74 as shown in FIGS. 5 and 6. The distance between the side walls 72, 72' of the frame members channel 66 is dimensionally selected so that the arm 86' of the bolt member having the detent 92 is resiliently stressed when the detent is positioned in either of the notches 76 or 76. The bolt member 58, within the channel 66, is sandwiched between the frame member 60 and the plate portion 50 of the pull member, with the bolt member longitudinally slidable with respect to its underlying and overlying members. The cap 62 is placed over the plate portion 50 of the pull member, with the key barrel 64 positioned therebetween and located within the opening 98 of the cap. As shown in FIGS. 24, the key barrel, which is provided with the usual slot 106, has an overall diameter greater than the opening 98 and is beveled at 108 for engagement with the wall provided by a countersink 110 (FIGS. 2 and 3) so that the key barrel cannot escape. The tangs 102, 102' of the cap extend below the lower edges of the frame members side walls 80, 80 so that they may be bent back onto the underside of the frame member to secure the assembly together. The shoulders 56, 56' and 57, 57' at the sides of the pull member confine the opposite ends of the walls 80, 80' of the frame member to prevent the frame member, and the key barrel and cap assembled therewith, from moving longitudinally with respect to the pull member. Only the bolt member of the pull assembly is capable of longitudinal movement within the limits permitted by the projection 88 of the bolt member as stopped by the opposite ends of the notch 74 (FIGS. 5 and 6).

FIG. 3 shows the slider with the pull assembly in its down position so that the slider cannot be moved to open or close the fastener. However, in this position the slider is not locked to the fastener, for the pull assembly may be lifted or pivoted to the up position to permit the fastener to be opened or closed. In such condition of the slider, the bolt member 58 is related to the frame member 60 as shown in FIG. 6, the base portion 84 of the bolt member clearing the notch 82 in the frame member, also the notch 104 in the cap, and allowing the pull assembly to be grasped and pivoted to an up position wherein the pin 44 is lifted out of engagement from between a pair of fastener elements in an arm of the internal Y- shaped channel of the slider. From FIGS. 2 and 3, it will also be apparent that the locking mechanism associated with the pull member does not increase the height of the slider beyond the top surface of the lug 36 which is not any higher than in an ordinary slider.

To positively lock the slider upon a slide fastener, the

bolt 58 is shifted from the position shown in FIGS. 3 and 6 to the position shown in FIGS. 2 and 5. This is accomplished by extending the key through the slot 106 in the key barrel until the end of the key is seated in the bearing opening 70 in the frame member. With a tang of the key in engagement with the shoulder 90 of the bolt member in its position of FIG. 6, rotation of the key causes the bolt member to assume the position shown in FIGS. 2 and 5 where the base 84 of the bolt member underlies the shoulder 48 of the overhang or keeper portion 46 of the slider body. As a result, the pull assembly is bolted and locked to the slider body, and cannot be lifted or pivoted to an up position. The pin 44 is held between a pair of fastener elements on a stringer within an arm of the sliders internal channel, and the slider cannot be moved. To unlock the slider, the key is rotated in an opposite direction whereby a tang thereof engages the shoulder 90' to cause the bolt member to be shifted to the position shown in FIGS. 3 and 6. In moving the bolt member, with a key, to its locked and unlocked conditions, and vice versa, the detent 92 on the stressed arm 86' respectively enters the notches 76 and 76', and vice versa, with an audible click to releasably lock the bolt member in such respective positions. In this form of the invention, the resilient form of the bolt member with its detent 92 include-s the means for holding or locking the bolt member in its bolted and unbolted positions. The key itself, without any auxiliary means, serves to move the locking bolt member 58 to locked and unlocked positions and vice versa.

The form of the invention illustrated in FIGS. 7l2 is similar to the form of the invention illustrated in FIGS. 1-6 as hereinbefore described in the respects that a slider body is provided with keeper means and the pull member has a bolt member associated therewith for cooperative relation with the keeper means; also, the pull member has pin means for positioning between the fastener elements of a slide fastener. The embodiment of the invention illustrated in FIGS. 7-12 however is different in the respects that the pin means on the pull member is differently located, the slider body is modified to accommodate the different location of the pin means, and separate or additional locking means is associated with the bolt member to maintain the bolt member in its bolted position.

As shown in FIGS. 79, the slider body 110 comprises top and bottom wings 112 and 114 having respective side flanges 116 and 118. The flanged top and bottom wings are connected to one another at their upper ends by a neck 120, the flanged top and bottom wings and the neck furnishing an internal channel of substantially Y shape. The slider body differs from the usual slider body in that the bottom flanged wing 114 is made longer than the top flanged wing and, as shown in FIGS. 8 and 9, extends beyond the plane, designated 122, in line with the lower edge of the top wing. The illustrated slider, when assembled with a pair of slide fastener stringers,

has the fastener elements in interlocking engagement situated upon the extension 124 of the bottom wing.

As previously described, the top wing 112 of the slider is preferably provided with .a central, elongated, longitudinally extending, integrally formed lug 126, which is provided with a transverse opening 128 at its upper or neck end of the slider to receive the trunnions 130, of a pull member 132. The opposite or lower end of the lug has a portion 127 which overhangs the lower end of the top wing thereby providing an abutment or shoulder 129 extending beyond the plane 122.

The pull member 132 has a pair of laterally spaced arms 134, 134' at the ends of which the inturned trunnions 130, 130 are located. Pin means in the form of a pair of detents 01' pins 136, 136' are formed integrally with the pull member 132 and extend from the underside thereof. As shown in FIG. 10, the pins 136, 136' are longitudinally offset an amount equal to the pitch of the fastener elements on a stringer, so that when the pull member 132, and the parts associated therewith, are in the down position as shown in FIGS. 8 and 9, the pins will enter between a pair of adjacent fastener elements on each of the stringers which have their fastener elements interlocked in the area where they overlie and are supported by the extension 124 of the bottom wing. Accordingly, the arms 134, 134' are of a length, and the pins 136, 136' are located on the underside of the pull member 132, so that the pins clear the top wing 112 when the pull member and its associated elements are in a horizontal or down position adjacent the top wing.

As also shown in FIG. 10, the plate portion 138 of the pull member is made to lie in a diiferent but parallel plane with respect to the plane of the spaced arms 134, 134' by bending the arms out of the plane of the plate portion as illustrated. The plate portion 138 of the pull member is provided with a series of spaced apertures 140 for the connection of a cap 142 thereto. The cap and the plate portion of the pull member when connected serve to house and support a bolt member 144, resilient means or a spring member 146, a locking member 148 and a key barrel 150. The plate portion of the pull member is provided with a central aperture 151 to receive and serve as a bearing for the end of a key.

As shown in FIGS. 10 and 10A, the cap 142 has substantially the same or generally trapezoidal shape as the plate portion 138 of the pull member. The cap, which preferably is formed by die casting, is provided at its forward end with a central notch 152 for alignment with the opening between the arms 134, 134 of the pull member so that there will be no interference with the overhang portion 127 of the lug on the slider body when the cap connected to the pull member is pivotally raised from the down position shown in FIGS. 8 and 9. The underside of the cap preferably is provided with integrally formed, spaced, connecting studs 154 which are extended through the openings 140 in the plate portion 138 of the pull member. The lower extremities of the connecting studs are swaged over with a suitable tool to firmly connect the cap to the pull member.

The underside of the cap 142 is formed to provide guide means and stop means for the bolt member 144, and is further formed to house the spring member 146, the locking member 148 and the key barrel 150. Accordingly, and as shown in FIG. 10A, the wall 156 of the cap is formed on its underside with a recess 158 adjacent the front end of the cap and a recess 159 adjacent the oppo site end of the cap. The recesses provide laterally spaced, longitudinally extending side walls 160, 160 and 161, 161 which receive the portions of the sides of the bolt member 144 with a close sliding fit. A central keyhole-shaped aperture 162 extends through the wall 156 to receive the upstanding, slotted boss portion 164 of the key barrel 150. The underside of the wall 156 is provided with a countersink 166 within which is received the annular flange 168 5 of the key barrel as shown in FIGS. 8 and] 9. The countersink 166 is of a diameter to also receive the locking member 148 and a portion of the spring member 146. The underside of the cap is further formed with a pair of laterally spaced shoulders 170, 170' which cooperate with means provided by the bolt member 144 to limit the extent of the sliding movement of the bolt member when it is moved to unbolted or non-blocking position. As shown in FIGS. 8 and 9, the key barrel 150 is countersunk on its underside, at 171, to allow a portion of the locking member 148 to be received therein.

As shown in FIG. 10, the bolt member 144 is a generally rectangular piece the front end of which is provided with a central projection 172 which is adapted to be received beneath the shoulder 129 of the overhanging keeper portion 127 of the lug (FIG. 8). Except for the projection 172 and ear portions thereof, which are about to be described, the bolt member is of a width so that its sides 174, 174' are received within the recesses 158 and 159 with a close sliding fit between the walls 160, 160 and 161, 161' of the cap. The bolt member is thereby .guided for longitudinal sliding movement with respect to the pull member 132 and the cap 142 between which it is situated.

As also shown in FIG. 10, the body portion 176 of the bolt member is formed intermediate its length with a pair of oppositely extending ears 178, 178 which are formed for cooperation with the spring member 146 and the stops 170, 170' provided by the cap. As illustrated, the ears 178, 178' are respectively provided with converging sides 180, 180 and 182, 182'. Also, the ears are respectively provided with opposite, centrally located notches 184, 184 at their outer ends. Intermediate the ear portions of the bolt member, an aperture 181 is provided and made of a configuration to furnish a stop 183 for a portion of the locking member 148, as will be subsequently described. The outer extremity of the plate portion 176 may be provided with an aperture 186 to allow a thong to be secured to the member.

The spring member 146 functions both to resiliently maintain the bolt member 144 in its bolted and unbolted positions, and to resiliently maintain the locking member 148 in its locking and unlocked positions. As shown in FIG. 10, the spring member is generally U-shaped and comprises a base portion 188 and a pair of laterally spaced arms 190, 190 extending from the base portion. The base portion is provided with a central projection 192; also, the base portion is cut away for a portion of its height at 194 so that the spring member may straddle the bolt member at the end thereof between the projection 172 and the ears 178, 178'. The cut-out 194 is slightly wider than the distance between the sides 174, 174' of the bolt member. The arms 190, 190' of the spring member are outwardly bent at their ends 196, 196, such bent ends being receivable in the notches 184, 184' of the bolt members ears 178, 178' when the bolt member is in unbolted position, and to engage the ears sides 180 and 182' when the bolt member is in its bolting position.

The locking member 148 is in the form of an annular disk having a central aperture 198 to allow the passage of a key. The locking member disk is formed with an upwardly extending, arcuately-shaped, key-engaging portion 200, and is provide on its underside with a downwardly extending locking projection 202. The locking projection is adapted to extend into the opening 181 provided in the bolt member 144. The locking member disk also is formed at its periphery, at diametrically opposite sides of the disk, with a pair of notches 204, 204', which are adapted to respectively receive the projection 192 of the spring member 146, depending upon whether the locking member is in either its locked or unlocked position.

FIG. 9 shows the slider in its unbolted and unlocked condition. In such condition, the bolt member 144 is fully retracted whereby the projection 172 is out from under the shoulder 129 of the lugs overhang portion 127. Although in this position the pins 136, 136 are positioned between adjacent fastener elements on each of a pair of stringers upon which the slider is mounted, and the slider cannot be moved to either open or close the fastener, the pull assembly (pull member 132, bolt member 144, spring 146, locking member 148, key barrel 150 and cap 142) may be grasped and lifted about the pivotal connection provided by the bearing 128 and the trunnions 130, and the slider can be moved to open and close the fastener. In such unbolted and unlocked position, the bolt member 144 cannot be further retracted because the sides 180, 182' of the ears abut the stops provided by the shoulders 170, 170 on the underside of the cap 142. As shown in FIGS. 9 and 12, the locking projection 202 of the locking member 148 is free of the sides defining the bolt member aperture 181, and in non-blocking position. The ends 196, 196 of the spring member 146 are positioned in the notches 184, 184' of the bolt member, and the projection 194 of the spring member is positioned within the notch 204 of the locking member.

To bolt the pull assembly to the slider body and thereby prevent the pins 136, 136 from being lifted out from between the fastener elements of a slide fastener, manual pressure is applied to the bolt member .144 in the direction of the arrow X as indicated on FIG. 9. This causes the bolt member to slide forward and the projection 172 to move under the shoulder 129 of the lugs overhang keeper portion 127. The force imparted to the bolt member to slide it to the bolted position shown in FIG. 8, causes the ends 196, 196 of the spring member to ride out of the notches 184, 184' and onto the ears sides 180, 182 as shown in FIG. 11. As a result, the bolt member 144 is also resiliently maintained in its bolted position, and a force is required, applied in a direction opposite to the direction of bolting, to move the bolt member to the unbolted position of FIG. 12.

To look the bolt member in its bolted position, a key is inserted through the slot of the key barrel with the lower extremity of the key seated in the aperture 151 of the pull member 132. A tang along the length of the key engages an edge of the upstanding portion 200 of the locking member 148, and upon rotation of the key the locking member is rotated from the position shown in FIG. 12 to the position shown in FIG. 11, the rotation of the locking member being stopped when the locking portion 202 engages the stop 183 provided by the bolt member. In such position of the locking member 148, the bolt member is blocked and cannot be retracted without the aid of the key and rotation of the locking member in an opposite direction, or to the position shown in FIG. 12. In the locking position of the locking member, the locking member is resiliently maintained in such position by the mating cooperation of the spring projection 192 with the notch 204 of the locking member.

It is believed that the advantages and improved results of the invention will be apparent from the foregoing description of several preferred embodiments of the invention. It will be understood that various modifications and changes may be made without departing from the spirit and scope of the invention as sought to be defined in the following claims.

We claim:

1. A lockable slider for a slide fastener having interlockable elements, said slider comprising top and bottom flanged wings joined by a neck at one end to provide an internal Y-shaped channe-d for engaging and disengaging the interlockable fastener elements, a pull member having a pair of laterally spaced arms and a plate portion, said plate portion having an aperture to allow the passage of a key, the top wing and the ends of the arms being cooperatively formed to pivotally connect the pull member to the top wing, pin means provided by the pull member positionable between fastener elements to prevent movement of the slider when the pull member lies in a position adjacent the top wing, said top wing being formed at the end opposite the neck end with an overhang portion extending beyond the wing, a frame member having a longitudinally extending channel underlying the plate portion, a cap having a key barrel opening overlying the plate portion and connected to the frame member, a key barrel intermediate the cap and the plate portion exposed in said key barrel opening, a bolt member positioned in said frame member channel and guided for movement to bolted position beneath said overhang portion whereby pivoting of the pull member from its position adjacent the top wing is prevented, said bolt member being formed to provide means engageable by a key whereby the bolt member may be moved to bolted position and to unbolted position clearing the overhang portion, and cooperable means provided by the frame member and the bolt member for releasably maintaining the bolt member in its respective bolted and unbolted positions.

2. A lockable slider as set forth in claim 1, wherein the bolt member is a substantially U-shaped member, the base portion being receivable beneath the overhang portion in bolted position, one arm of the bolt member being resiliently related to the second arm and having a detent, the second arm being formed to provide a projection; and wherein the frame member is formed to provide a pair of longitudinally spaced notches for respectively receiving said detent, said frame member further being formed with a notch to receive said projection to limit the extent of movement of the bolt member.

3. A lockable slider as set forth in claim 1, wherein the top wing is provided with an aperture in communication with an arm portion of the Y-shaped channel; and wherein the pin means provided by the pull member comprises a pin formed integrally with an arm of the pull member, said pin extending through the top wing aperture when the pull member lies in a position adjacent the top wing.

4. A lockable slider as set forth in claim 1, wherein the top wing is provided with an integrally formed, central, longitudinally extending, elongated lug, said lug being formed to provide both the bearing receiving the trunnions and the overhang portion.

5. A lockable slider for a slide fastener having interlockable elements, said slider comprising top and bottom flanged wings joined by a neck at one end to provide an internal Y-shaped channel for engaging and disengaging the interlockable fastener elements, a pull member having a pair of laterally spaced arms and a plate portion, the top wing and the ends of the arms being cooperatively formed to pivotally connect the pull member to the top wing, pin means provided by the pull member positionable between fastener elements to prevent movement of the slider when the pull member lies in a position adjacent the top wing, said top wing being formed at the end opposite the neck end with an overhang portion extending beyond the wing, a bolt member overlying the plate portion, a cap overlying the bolt member connected to the plate portion, said cap being formed on the underside thereof to guide the movement of the bolt member to bolted position beneath said overhang portion whereby pivoting of the pull member from its position adjacent the top wing is prevented, and means cooperable with the bolt member for locking the bolt member in its respective bolted and unbolted positions.

6. A lockable slider for a slide fastener having interlockable elements, said slider comprising top and bottom flanged wings joined by a neck at one end to provide an internal Y-shaped channel for engaging and disengaging the interlockable fastener elements, a pull member having a pair of laterally spaced arms and a plate portion, the

top wing and the ends of the arms being cooperatively formed to pivotally connect the pull member to the top wing, pin means provided by the pull member positionable between the fastener elements to prevent movement of the slider when the pull member lies in a position adjacent the top wing, said top wing being formed at the end opposite the neck end with an overhang portion extending beyond the wing, a bolt member having an aperture for the passage of a key overlying the plate portion, a cap having a key barrel opening overlying the bolt member connected to the plate portion, a locking member and a key barrel, said cap being formed on the underside thereof to guide the movement of the bolt member to bolted position beneath said overhang portion whereby pivoting of the pull member from its position adjacent the top wing is prevented, said underside of the cap housing said locking member and key barrel with the latter exposed in said cap opening, said locking member being mounted for rotation and having an upstanding projection for engagement by a key and a locking portion extending from the underside thereof positioned in said bolt member aperture, said locking portion blocking the retraction of the bolt member when the bolt member is in bolted position, and resilient means cooperable with the locking member and the bolt member for resiliently maintaining the bolt member in its respective bolted and unbolted positions and for resiliently maintaining the locking member in its respective locking and unlocked positions.

7. A lockable slider as set forth in claim 6, wherein the bolt member has a pair of oppositely extending ears at the sides thereof, said ears each being notched; wherein the locking member is an annular disk notched at diametrically opposites thereof; and wherein the resilient means comprises a U-shaped spring, the base portion of the spring being formed to straddle the bolt member, said base portion having a projection receivable in the notches of the disk in the respective locking and unlocked positions of the locking member, the arms of the spring being formed at their ends to be received within said ear notches in the unbolted position of the bolt member and to extend over the ears in the bolt members bolted position, said cap being formed for engagement with said ears to limit the bolt members movement when retracted to unbolted position.

8. A lockable slider as set forth in claim 6, wherein the bottom wing is provided with an extension at its lower end and the pin means provided by the pull member comprises a pair of longitudinally olfset pins located on the pull member to overlie said extension when the pull member lies in a position adjacent the top wing.

9. A lockable slider as set forth in claim 6, wherein the top wing is provided with an integrally formed, central, longitudinally extending, elongated lug, said lug being formed to provide both the bearing receiving the trunnions and the overhang portion.

References Cited UNITED STATES PATENTS 2,256,680 9/1941 Lemmer 24-205.14

2,262,188 11/1941 Marinsky 24-205.14

2,972,793 2/ 1961 Burbank 24-205.14

3,212,304 10/1965 Feinberg -71 FOREIGN PATENTS 1,257,360 2/ 1961 France.

BOBBY R. GAY, Primary Examiner.

Claims

1. A LOCKABLE SLIDER FOR A SLIDE FASTENER HAVING INTERLOCKABLE ELEMENTS, SAID SLIDER COMPRISING TOP AND BOTTOM FLANGED WINGS JOINED BY A NECK AT ONE END TO PROVIDE AN INTERNAL Y-SHAPED CHANNED FOR ENGAGING AND DISENGAGING THE INTERLOCKABLE FASTENER ELEMENTS, A PULL MEMBER HAVING A PAIR OF LATERALLY SPACED ARMS AND A PLATE PORTION, SAID PLATE PORTION HAVING AN APERTURE TO ALLOW THE PASSAGE OF A KEY, THE TOP WING AND THE ENDS OF THE ARMS BEING COOPERATIVELY FORMED TO PIVOTALLY CONNECTED THE PULL MEMBER TO THE TOP WING, PIN MEANS PROVIDED BY THE PULL MEMBER POSITIONABLE BETWEEN FASTENER ELEMENTS TO PREVENT MOVEMENT OF THE SLIDER WHEN THE PULL MEMBER LIES IN A POSITION ADJACENT THE TOP WING, SAID TOP WING BEING FORMED AT THE END OPPOSITE THE NECK END WITH AN OVERHANGING PORTION EXTENDING BEYOND THE WING, A FRAME MEMBER HAVING A LONGITUDINALLY EXTENDING CHANNEL UNDERLYING THE PLATE PORTION, A CAP HAVING A KEY BARREL OPENING OVERLYING THE PLATE PORTION AND CONNECTED TO THE FRAME MEMBER, A KEY BARREL INTERMEDIATE THE CAP AND THE PLATE PORTION EXPOSED IN SAID KEY BARREL OPENING, A BOLT MEMBER POSITIONED IN SAID FRAME MEMBER CHANNEL AND GUIDED FOR MOVEMENT TO BOLTED POSITION BENEATH SAID OVERHANG PORTION WHEREBY PIVOTING OF THE PULL MEMBER FROM ITS POSITION ADJACENT THE TOP WING IS PREVENTED, SAID BOLT MEMBER BEING FORMED TO PROVIDE MEANS ENGAGEABLE BY A KEY WHEREBY THE BOLT MEMBER MAY BE MOVED TO BOLTED POSITION AND TO UNBOLTED POSITION CLEARING THE OVERHANG PORTION, AND COOPERABLE MEANS PROVIDED BY THE FRAME MEMBER AND THE BOLT MEMBER FOR RELEASABLY MAINTAINING THE BOLT MEMBER IN ITS RESPECTIVE BOLTED AND UNBOLTED POSITIONS.