US2076897A - Closure bolting and locking means - Google Patents

Description

April 13, 1937. H; H. KlsTNER i 2,076,897l

CLOSURE BOLTING AND LOCKlNG`MEANS Original Filed April 16, 1932 2 Shees--SheeiI l April 13, 1937.

H. H. KISTNER CLOSURE BOLTING ND LOCKING MEANS original Filed-April 16, 1932 2 sheets-sheep 2 a7 @na/VZW Patented Apr. 13, 1937 Herman H. Kistner, Baltimore, Md.,assig'norto The Kistner Lock and Appliance Company,

Baltimore, Md., a. corporation of Marylandk Applicatiohfiipril 16,1932, serial No. 605,729 j vrRenewed. Marchv 26, 1936 2o Claims.` (el.l 70-90) 'I'his invention relates to window sash looks and similar devices and aims generally toprovide improved locking means comprising means for bolti 1 ing members such as window sashes and the like "5 against relative opening movement.

Subsidiary to this general object, my invention further aims to provide a simple and effective bolting structure which may be positioned at any desired part of the meeting members to be locked s l0 together, which will be invisible from the exterior of the closure, and'which will render the closure incapable of being opened from the exterior and, incapable of being opened fIOm'the interior un less proper releasing `means be employedand properly manipulatsed.` Other aims of my 1n-v vention, severally and interdependently, arevto improve the details of construction oiV suchrbolting means and 'holding and releasing `means therefor, to provide a structure capable ofv being easily and most uncbtrusively mounted, and one incapable of dislodgment from the exterior `of the closure. .Y

Other objects and particular advantages of various featuresandcombinations of my invention will be made clearly apparent to those skilled in the art bythev following detailed descriptionof preferred embodiments of my invention shown in the accompanying` drawings, in which Figs. 1 through f6 illustrate oneembodiment` of my invention '(Fig. 1 being a perspective View of the same in locked position in the meeting rails of a sliding sash window provided with an o`rdi.`

nary rotary cam bolt; Figs. 2`and 3, vertical longitudinal sectional viewsfof such mounted em` bodiment in unlocked fpositionand in a position assumed inlocking and unlocking the same, re-LV spectively;l Figs'. 4 and 5,\transvers'e sectional views takenon thelines -t'and 5-5 respec-` tively of Fig. 3, looking in the direction ofthe 40 spective view of the lock body and key of this embodiment) l Figs. '7 through 10 illustrate a second embodiment of my invention (Fig. '7 being a vertical longitudinal sectional View of suchsecond embodiment in mounted position;` Fig. 8 a horizontal lon-` gitudinal sectional View taken on the line 8-8 of Fig. 7 looking in the 'direction of the arrows;V

Fig. 9, a transverse sectional'view taken on'the lines A9--9 Vof Figs, '7 and 8 looking inthe direc"l tion of the arrows; and Fig. l0, a perspective disassembly view of the shell of the lock-body of Figs. '7 through 9).; while Figs. 11 throught; show a third embodiment V oimyinventicn (Figs. V1l. all@ 1.2 ,being'horizon` arrows; `and Fig. 1.6,` a complete disassembly per'-,`

tal longitudinal sectional views of, such third embodiment in an intermediate position and in unl locked position, respectively; and Figs. 13 and. 14,v end and'transverse sectional viewsrespectivelyf taken on the lines l3|3, Fig.r12,'an'd'l4v-l4, Fig. 11.

Referring particularly toFigures 1 through 6 of the drawings, it will be seen that my inven` tion isv primarily intended to be employed inde@ pendently of the ordinary fastener provided for".- closures suchas sliding sash or easement winlj d'ovv's; and thati'n Figure 1 I have indicated such independent mounting of an embodiment of my j invention in the meeting rails 20, 2li of a pair of cambolt sliding sashes provided with la rotary fastener Z2-#23 of usual type.

As is ,wellknowm the parts of the usual rotary or cam bolt fastener, as`- 22,-23, are securedyby screwsI or th like in cooperating position, upon r V .y 20 the closure, makingthe structure readilygsus-j ceptible'to jimmying, which, in lthe case of' sliding sash windows provided with fastenersof the transversely movable abutting portions `ci" the type indicated at 2,2-23, in Fig. 1, is usually effectedpbyinserting a pryingtoolunderfthe the upper sash memberv 2l. isalso' well known, it is frequently possible fo'rfa 'maraudeij l' to insert a thin blade .between the members 20;4 2lra`nd undo the fastener, thisoperation'being commonly referred-toas sliciiig; and inaddition, by cutting a small holein'the'wiridow panf and inserting a suitablesr'i'i'all` instrumentL there? f through, unscrupulous persons have Virequently` been able Ito undo -nearly any type of "viastening means ordinarily employed.'

The device of my invention effectively'prevents!" opening from the exterior byanyof'thefabove means of sliding sash or other'clo'su'restofwhich` it may be 'applied' and inf addition has numerousV advantages from the standpoint of simplicity and cheapness of construction' and installation and unobtrusiveness and reliability in operation.

The form of the device illustrated in Figures" 1 through 6 comprises a body or casing 24, most` conveniently of` tubular form, provided `with arrl internal shoulder Vor abutment 25 at itsiorwra'rd end, shown as a continuous flange 4at said end." Within this body or casing 24 is mounted a pro?` -jectable bolt member` 2B, and associatedwith the bolt and casingI provide interengaging means,4

comprising a bayonet slot 21-28--29 and a locking pin ,3ft 'movable therein', adapted `to retain the bolt in projectedposition.

As bestshownin" 25` lower sash and forcing the same upwardly'topull out the screws holding the catch memberZitto Figs. 2 and 6, I prefer to mount the bayonet pin 3|) at the butt end of the bolt member 26 and to employ a bayonet slot of generally L-shaped formation with its foot portion 28 nearest the forward end of the body, and to provide the foot portion with an upturned toe portion 29 to receive the pin 30 and retain the bolt in a projected position and prevent release of the same unless the bolt be slightly projected from retained position to free the pin 30 from the toe or notch portion 29.

The bolt-member in the form shown is guided longitudinally by means of the iiange at the forward end of the casing and by means of a guiding element 3| extending between the boltmember 26 and the casing 24, and means is provided for urging the bolt member toward retracted position, by assembling a compression spring 32 between the abutment 25 of the casing and an abutment 33 carried by the bolt, and conveniently consisting of the front face of the guiding element 3|, which in the form shown comprises a flange integral with or secured to the bolt-member 26 and having a loose sliding fit in the casing 24.

Asis clearly indicated in Figures 2, 3 and 6, the bolt member 26 is preferably of such length that when retained in projected position, its butt end will lie within the butt end of the casing 24, and as it is desirable to avoid any substantial projection of the bolt from the closure members when in retracted position, I preferably make the boltbody 24 of a length to t flush with the exposed face of the closure-member 20, and make the projectable bolt-member of a length less or approximately no greater than the length of the bolt body 24 (see Fig. 2). In the form of Figures 1 through 6 the butt end of the bolt-member 26, which carries the locking pin 30, is made smooth and substantially non-engageable by any turning implement but is made smaller in diameter than the internal diameter of the casing 24 to expose a portion of the pin 3D in the space thus provided, to constitute an engageable portion to be utilized in moving the pin 30 in the foot portion 2 8 of the bayonet slot. By this construction I position the point of engagement for releasing the bolt assembly, when retained in projected position, so deeply within the casing as to render it extremely difficult to eiect disengagement thereof unless proper key means be employed.

In the form shown (see Figs. 3 to 6) such key means .comprises a central abutment portion 35 adapted to press against the butt-end of the bolt member 26 to effect projection of the same, and one or more forwardly projecting tongues 36 adapted to enter the space between the butt-end of the bolt 26 and the casing 24 to laterally engage the exposed portion of the pin 3U to move the pin to retaining and non-retaining positions in the foot portion 28 of the bayonet slot.

To correlate particular keys with particular locks and prevent manipulation of the pin 30 by means of thin instruments such as knife blades or the like, I provide the casing 24, adjacent its butt-end, with one or more inwardly extending protuberances 31 which may be variously spaced and positioned longitudinally and circumferentially about the casing 24, and which are preferably in the form of small pins driven through the wall of the casing as best indicated in Fig. 6, with their heads projecting from the outside of the casing to comprise means for limiting their entry and means for biting into the wooden sash-frame 20 to more securely hold the boltbody 24 in mounted position. To cooperate with these protuberances or guard pins 31 the key element (see Figs. 3 and 6) may be provided with one or more circumferential grooves 38 to align with the pins during turning movement of the key and with one or more slots 39 to provide for axial movement of the key to and from locking position. With the arrangement shown, the pins 31 and grooves 38 and 39 cooperate to prevent removal of the key with the bolt in projected position, unless it be so far turned as to provide for seating of the pin 30 in the toe 29 of the bayonet slot upon withdrawal of the key.

The assembly of this form of my bolt structure, as indicated in Figure 6, is a very simple matter involving merely the insertion of the spring and bolt assembly into the casing 24 aligned for insertion of the single pin 30 through a portion of the bayonet slot 21-28-29 and into the pin receiving hole 39 of the bolt-member 26, after which the pins 31, which may have been already partially inserted, may be quickly pressed home to complete the assembly. It will be noted that in this form of my device the single pin 30 serves as a locking pin, serves in conjunction with the rear end of the bayonet slot as means to limit the retraction of the bolt, and serves, at its exposed portion, as means manipulable to effect release of the parts from= projected position.

The mounting of this form of my device in the window frame is equally simple, it being necessary merely to provide a straight hole through the meeting rail 20 to enable driving home therein of the bolt assembly, and to provide an aligned recess in the body proper of the cooperating closure member 2| into which the bolt member 26 may be projected. Another advantage of the design is that the device may be withdrawn bodily from the window frame by any suitable tool that can be inserted within the open end of the casing 24 to engage behind the pins 31.

In the preferred installation of my device I provide a lining thimble 40 for this recess, preferably hardened at its bottom 4| to prevent access to the end of the bolt by drilling from the exterior of the closure member 2|, and this liner may be provided with a continuous or discontinuous flange 42 juxtaposed to the body of the closure member 28 when the closure is locked, to guard against driving of the bolt-assembly from its mounted position by application of force to the thimble 4|J. As shown in Figures 1 through 5, the iiange 42 may be employed to receive attaching screws 43, if this be desired.

As an example of another of the numerous forms in which my invention may be embodied, I have illustrated in Figures 7 through 10 a form thereof in which the tubular casing is formed in two parts secured together to form a unitary body member, and in which the device is adapted to be operated by a screw driver or like implement. In this form of my device the parts corresponding to those of the embodiment of Figures 1 through 6 are indicated by similar reference numerals with the subscript a and it is thought unnecessary to extend this description by further reference thereto. The tubular body 24 of this embodment is provided with an internal channel or structure eiTective as an L-shaped bayonet slot, by means of a slotted sleeve 44, best shown in Figure 10, held in place by any suitable means, such as the machine screws 45. The pin 3|!a of this embodiment is shorter than the pin 30 of the former embodiment and is adapted to be moved in the slot 21a of the sleeve 44 during projection and retraction of the bolt and to be moved out of alignment Awith the slot to abut the foward end 28a of the sleeve to hold the bolt 2liEL in projected position. Furthermore the sleeve` 44 may be provided with a notch 29a to correspond to the toe 29 of the bayonet lslot in the embodiment of Figures 1 through 6, and for the same purpose.

In this embodiment the spring abutment 33a is shown as a split` ring seated in a groove in the bolt-member 26a, and this element may Vserve in addition to the flange a to guide the boltmember 26EL in the casing 24a, or it may be simply a loose ring, the guiding means being constituted by the inner end of the sleeve 44 and the rear end of the bolt 26a, which (as indicated in dotted lines in Fig. 8) remain in engagement at 3|a when the bolt is in projected position. vFurthermore in this embodiment the slot 21a may extend the entire length of the sleeve 44, asshown, and abutment of the front face 28a of the sleeve 44 with the abutment 33a of the bolt, may be depended upon to limit the extent of retraction of the bolt member 26a. In this form, no `part of the pin 3i)a is exposed When the bolt is retained in projected position, but the butt-end of the bolt is provided with a kerf 46, enabling the employment of screw-driver-like means indicated at 41,

- to Aoperate the bolt .from retracted to retained in two parts, one fitting within the other.

position and vice versa. l

`In assembling thisembodiment of the invention it is only necessary to snap the spring ring 33a into the groove of the' bolt 26a, which may already have the pin 3|la secured in place, and to drop the coil spring 32a and this assembly into the casing 24a, insertthe sleeve and secure the same as by the machine screws 45.

As a further illustrative embodiment of my invention I have indicatedin Figs. 11 through 14, a form thereof employing a flat key and a key plate retained in place by an outer shell made In the drawings of this formof my invention I have indicated parts corresponding to those of Figures l through 6 by similar reference Anumerals with the subscript b to render unnecessary repeated description thereof. l

In this embodiment of my inventionthe guiding means SIb and spring abutting means 33b are embodied as a loose ring or washer slipped over the bolt into engagement ,with `a pin conveniently the single'pin 30h which is thus provided with an additional function inaddition to those served by the pin 30 in the embodiment of Figs. 1 through 6. The key in this embodiment is flat and may have its extensions 3|;b of such length as to push the sleeve 3|b, 33h slightly forward (see Fig. 1l) to take the tension of the spring off the bolt before its portion 35lo engages the bolt and during movement of the pin 3|)b in the foot and toe of the bayonet slot or'channelZTb, 28h, 29h. In this embodiment the pins 31h are shown extending to such depth that slots 48 are out into the bolt to provide for reception thereof, although this is a matter of choice in my invention, and the pins 31h have no heads external of the inner section of the tubular body 24h. A key plate 49, which may be fixed or movable, is secured against the butt-end of thertubular body 24b by .means of a flanged shell and is provided with cut away portions 5| to enable entry of the key. When fixed, as in the form shown, the plate and key must be formed to provide for relative rotation during movement of the pin 30b in the foot key plate 49 is ilxed and with certain locations of the pins, 37b, it may be desirable that provision be made for misalignment of the cut-away portions 5| and the toe 29D of the bayonet slot, as in the form shown. Notohes in the flat key, corresponding to the grooves 38 of the key shown in Figures 3 and 6, provide for turning of the key past the pins 37b, in` turning the pin Bb in the foot 28b of the bayonet slot. Y

In the form shown, to project the bolt 26h the key is inserted through the horizontally aligned cut-outs 5|, is pushed until the bolt 2Gb is fully projected, and is then turned clockwise, as viewed in Figure 14, a full one-half turn, andwithdrawn in horizontal position leaving the pin 3b engaged in the toek 291 of the bayonet slot. To release the bolt from projected position, the key is again inserted horizontally, pushed forward until the pin 3|)b is lifted out of the toe 29h, and rotated three-fourths of a turn counterclock- Wise, as viewed in Figure I4 to bring the pin 30b -into alignment with the leg 2lb of the bayonet slot, when the key must then be turned clockwise one-fourth turn to align with the ways 5| to enable retraction of the bolt. Ii desired, suitably positioned pins 3l `may be employed to make it necessary to hold the kep pushed in to enable this last one-fourth turn of clockwise movement necessary to withdraw it from the lock and allow retraction of the bolt under the inuence of the spring 32b or such other means as may be employed to urge the bolt toward retracted position.

In connection with certain features of my present application, particularly the association with an embedded projectable bolt installation of `a lining thimble suchas the thimble 48, 4|, 42, reference is made to my Patent No. 1,899,466, dated February 28, 1933.

In the light of the drawings and foregoing description it will be obvious to those skilled in the art that the several features of my invention may be embodied in numerous specific forms and that the forms particularly shownand described are to be considered merely illustrative of my invention and not restrictive thereof.

I claim as my invention:

l. A sash-lock comprising a body, a projectable bolt movable in said body to position its bolting end in retracted and projected positions with respect to the front end of said body, said i bolt being of such length that in its projected position its butt-end lies within the butt-end oi said body, means for urging said bolt toward retracted position, interengaging means extending between said bolt and body and adapted to rei.

tain said bolt in a projected position, way-means through the butt-end of said body providing for entry therethrough of means to project said bolt and effect retaining interengagement of said interengaging means to hold said bolt projected and subsequently to manipulate said interengaging means to release said `bolt from retained position that it may be returned to retracted position under the iniluence lof said first named means, said body being of a length to be inserted in a sash member with its butt-end flush with the surface of the sash member and being uniformly of its maximum tubular size throughout a substantial portion of its length including its buttend extremity, and thereby, when driven into place in a sash member, presenting a generally smooth exterior at its butt-end and thus effectively eliminating any way by which said body might be pried loose from the sash member while locking the same.

2. A sash-lock comprising a. tubular bodyhaving an integral shell adapted to be forced into a. bore in the sash and provided with openings at both ends and a bayonet slot in its inside wall adapted to retain a pin at the forward end of the slot, a projectable bolt movable in said body to position its bolting end in retracted and projected positions with respect to the forward end of said body and providedv with a bayonet pin movable in said slot and adapted to be retained at the forward end thereof when said bolt is projected, said bolt being of such length that in its projected position its butt-end lies within the buttend of said body, whereby a key is enterable through the opening in the butt-end of said body and engageable with said bolt and pin assembly to project the same and effect retention thereof by the forward end of said slot and subsequently to disengage said pin from its retained position at the forward end of said slot, said body being provided adjacent its butt-end with at least one inwardly extending protuberance positioned in the path traversed by said key in manipulating said assembly to cooperate with a slot-arrange'- ment provided on said key and enable manipulation of said key as aforesaid, and means disposed between the forward end of said slot and the forward end of said body for urging said assembly to retracted position.

3. A sash-lock comprising a one-piece rtubular body having an internal shoulder at one end and a generally L-shaped bayonet slot with its foot toward said end, a bolt slidable within said internal shoulder to position its bolting end in projected and retracted positions with respect to said body and provided with a bayonet pin movable in said slot and adapted to be retained at the foot end thereof when said bolt is projected. said bolt being of such length that in its projected position its butt-end lies within the butt-end of .said body, whereby a key is enterable through the opening in the butt-end of said body and engageable with said bolt and pin assembly to project the same and turn it to eiect retention thereof by the forward end of said slot and subsequently to disengage said pinrfrom its retained position at the foot end of said slot, said body being provided adjacent its butt-end with at least one inwardly extending protuberance positioned in the path traversed by said key in manipulating said assembly to cooperate with a slot-arrangement provided on said key and enable manipulation of said key as aforesaid, and means disposed between the forward end of said slot and said internal shoulder for urging said assembly` to retracted position.

4. A sash-lock according to claim 3 in which the butt-end of said bolt is of less diameter than the interior of said body, to expose a part of said bayonet pin in the space thus provided, and in which said key is of tubular shape and of a size to fit into said space, and in which said slot arrangement extends longitudinally and circumferentially of said tubular key to enable the aforesaid manipulation thereof.

5. A sash lock according to claim 1, further provided with studs extending through the walls of said body to coordinate the particular lock with a particular means to project the bolt and manipulate the interengaging means, said studs extending outside said body to constitute means for biting into a wooden frame in which said lock may be mounted, to further assist in preventing removal of the lock from the sash member while locking the saine.

6. A sash vlock according to claim 1, further provided with studs extending through the walls of said body to coordinate the particular lock with a particular'means tovproject the bolt and manipulate the interengaging means, said studs having heads resting against the outer wall of said body to limit the entry of said studs therein and to constitute means for biting into a wooden frame in which said lock may be mounted, to further assist in preventing removal of the lock fromy the sash member while locking the same.

'7. In a sash-lock of the type comprising a tubular body and operable by a key inserted through the rear end thereof, studs extending through the walls of said body to coordinate 'the lock and key, said studs extending outside said body to constitute means for biting into a wooden fram-e in which said body may be mounted to assist in retaining said body therein.

8. In a sash-lock of the type comprising a tubular body andoperable by a key inserted through the rear end thereof, studs extending through the walls of said body to coordinate the lock and key, said studs having heads resting against the outer wall of said body to limit the entry of said studs therein and to constitute means for biting into a wooden frame in which said body may be mounted to assist in retaining said body therein.

9.*A sash-lock comprising a unitary tubular casing having an internalshoulder Aat its sash meeting end and at its other end a generally longitudinal channel terminating at a lateral abutment wat its inner end functioning as a bayonet slot, a bolt proportioned to lie within said body and projectable through said shoulder to bolting position, an abutment on said bolt lying in spaced relation to said shoulder internally of said body between said lateral abutment and shoulder in retracted position of said bolt, a coiled compression spring between the second named abutment and shoulder, a pin in said bolt spaced from said second abutment and positioned for movement in the channel and into engagement with the lateral abutment, movement of said bolt into retracted position being stopped by interengagement of said pin and said lateral abutment when the bolt is rotated, and means providing for the engagement of said pin and lateral abutment by a turning means to eiect alignment or misalignment of the pin with the longitudinal portion of said channel and said lateral abutment to retain or release said bolt from projected position, whereby said compression spring is prevented from accidentally engaging said channel in all positions of said bolt.

10. In a llock of the type described intended for use in a closure member having a cylindrical opening to receive it, a metal cylindrical shell with one ends adapted to be wholly embedded Within said closure member to have a pressed t with the walls of said opening, one end of the shell being fitted for the reception of a rotatable` and endwise movable key, a key-actuated spring tensioned bolt reciprocably mounted within said shell for projection through the opposite end against the spring resistance, guard means extending within the key receiving end of said shell to obstruct actuation of the bolt by means other than the key, and spaced means extending outwardly from the surface of the shell and `embedded in the closure member for preventing displacement of the shell.

11. In a lock of the type described intended for use in a closure member having a cylindrical opening to receive ita metal cylindrical4 shell with open ends adapted to be wholly embedded iwithin said closure member to have a pressed fitjwith the walls of said opening, one end of the shell being iitted for thereception of va rotatable and endwise movable key, a key-actuated spring tensioned bolt reciprocably mounted within said shell for projection through the opposite `end against `the spring resistance, and guard means ,bore in a softer material, one end of the shell being for the reception of a rotatable and endwise movable key, akey-actuated spring tens'ioned bolt reciprocably mounted within said `shell for projection through the opposite end against the spring pressure, 'acircumferentially fextending abutment in said shell, and means on `the bolt adapted in its projected position to engage the abutment and prevent retraction of said bolt by said spring pressure, and means associated with said abutment and bolt to prevent rotation of said bolt in its normal projectedposition, said associated means being disengageable byinward movement of the key to engage and move said bolt axially against the spring pressure, and spaced guard means within the hey receiving end of said shell for obstructing the entrance and rotation of bolt manipulating means other `than said key, said guard means providing internal engaging means for an implement for withdrawing said shell from the bore.

i3. A sash lock comprising a body, a projectable bolt movable in said body to positions holding end in retracted and projected positions with respect to the iront end of said body, said bolt being oi such length that in its projected position its butt-end lies within the butt-end of said body, means for urging said bolt toward retracted position, interengaging means extending between said bolt and body and adapted to retain said bolt in a projected position, guard means at the butt-end of said body providing a selective way for entry therethrough of a correspondingly selective key to project said bolt and` effect retaining nterengagement of said interengaging means to hold said bolt projected and subsequently to manipulate said interengaging means to release said bolt from retained position that it may be returned to retracted position under the influence of said rst named means.

lll. A sash lock comprising a body, a projectable bolt movable in said body to position its holding end in retracted and projected positions with respect to the front end of said body, said bolt being of such length that in its projected and retracted positions its butt end lies within the butt end of said body, means for urging said bolt toward retracted position, interengaging means extending between said bolt and body and adapted to retain-said bolt in a projected position, guide means at the butt-end of said bolt providing a limited sliding non-rotatable connection between said bolt and a correspondingly shaped key whereby to project and rotate said bolt and effect retaining interengagement of said interen-gaging means to hold said bolt projected and subsequently to manipulate said'interengag- 4ing means to release said bolt fromfretained posi- `tion that it may be returned to retracted posivtion under the inuence of said first named means.

15. A sash lock comprising a one-piece tubularl metal'body having an open butt-end and an inwardly anged forward guide end, a bolt adapted to be loaded into said body throughthe open butt-end thereof and being movable in said body to position its holding end in retracted and pro-' jected positions with respect to the front end thereof, a shoulder on said bolt substantially midway its length and constituting, `with said inwardly flanged end of said body, a guide means for said bolt, a coil spring around said bolt between said guide means for urging said bolt `toward retracted position, interengaging means between said bolt and body including a bayonet slot in the body and a pin member insertable through'said slot, into engagement'with the butt` end of said bolt and adapted to retain said'bolt in `projected position, and guard means removthrough of a correspondingly `selective key to project said bolt and effect retaining engagement of said interengaging moans to hold the bolt pro'.-

jected and subsequently to inanipulatesaid interengaging Ymeans Ytorelease the bolt' from retained position that it may be returned to retractedipositicn under the inuence of said spring.

i6. A sash lock comprising a one-piece tubular metal body having an open unlanged butt-end and an inwardly flanged forward guide end, a bolt adapted to be loaded into said body through the open butt-end thereof and being movable in said body to position its holding end in retracted and projected positions with respect to the iront end thereof, a shoulder on said bolt substantially midway its length and constituting with said inwardly flanged end of said body a guide means for said bolt, a coil spring around said bolt between said guide means for urging said bolt toward retracted position, interengaging means between said bolt and body including a bayonet slot in the body and a pin member insertable, through said slot having engagement with the butt-end of said bolt and adapted to retain said bolt in projected position, and a plurality of circumferentially spaced guards removably connected to and extending inwardly from the open butt-end of said body and constituting a selective way means for the entry of a correspondingly selective key to engage and manipulate said bolt into projected and retracted positions.A

1'?. An improved lock installation comprising a sash member, a sash lock including a body, a normally retracted spring tensioned bolt movable in said body to position its bolting end in retracted or projected positions with respect to the front end or" said body, interengaging means extending between said bolt and body and adapted io retain said bolt in a projected position, way means through the butt-end of said body providing for entry therethrough of a key to project said bolt and effect retaining interengagement of said interengaging means to hold said bolt projected and subsequently to manipulate said interengaging means to release said bolt from retained position that it may be returned to retracted position under the influence of said first named means, said body being of a length to be inserted in a sash member with its butt-'end `flush with the surface of the sash member and also having a diameter relative to the diameter of the opening in said member so that when press driven therein it is held in place within the sash member solely by reason of the frictional engagement between the lock body and the interior of the sash member, thereby presenting a secure installation having a generally smooth exterior at its butt-end and thus eiectvely eliminating any way by which said body might be 10 pried loose from the sash member while locking the same.

18. An improved lock installation comprising a sash member, a sash lock having a body of a length to be inserted in a sash member with its butt-end ush with the surface of the sash member, a normally retracted spring tensioned bolt movable in said body to position its bolting end in retracted or projected positions with respect to the front end of said body, interengaging means extending between said bolt and body and adapted to retain said bolt in a projected position, way means through the butt-end of said body providing for entry therethrough of a key to project said bolt and effect actuation of said bolt, said lock body being of a diameter corresponding to the size of the opening in the sash member and provided adjacent the butt-end thereof with means projecting from the body into the sash member, so that when the body is press driven therein, a tight secure installation is provided, characterized by a generally smooth exterior at its butt-end, thus effectively eliminating any way by which said body might be pried loose from the sash member while locking the same.

19. A sash lock installation comprising a sash lock as defined in claim 1,4, and a sash member having an opening therein of su'cient length to completely house the body of the lock and of slightly smaller size than the tubular portion of the body of the lock, whereby the sash lock may be pressed into said opening into tight frictional engagement with said sash member With its buttend flush with said sash member and thus effectively eliminating any way by which said body might be pried loose from the sash member while locking the same.

20. A sash lock installation comprising a sash lock as defined in claim 16, and a sash member having an opening therein of suflcient length to completely house the body of the lock and of slightly smaller diameter than the body of the lock whereby the lock body may be press driven into the sash member and wholly embedded therein by tight frictional holding engagement therewith, thus effectively eliminating the necessity of extraneous securing means and also any way in which the lock member might be pried loose from the sash member while locking the same.

HERMAN H. KISTNER.

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