US2072726A - Latch - Google Patents

Description

M. YARTYAN March 2, 1937.

LATCH Filed March 1B, 1936 2` Sheets-Sheet l )f1/nad' ATTORNEY March 2, 1937. M. YARTYAN 2,072,726

- LATCH Filed March 18, 1936 2 Sheets-Sheet 2 INVENTOR Mln/wr l/aryarb.

' ATTORNEY Patented Mar. 2, 1937 UNITED STATES PATENT OFFICE Application March 18,

11 Claims.

This invention relates to a device for latching or securing suitable appurtenances against movement in a particular position or any one of a number of different positions.

The device may be used advantageously in conjunction with a roll screen, curtain and the like. The device is useful, for instance, with a roll screen of the type disclosed in Letters Patent of the United States, No. 2,025,630, granted to me. In this type of screen the screen material is wound on and unwound from a spring roller, and the opposite side edges of said material move in vertical guides respectively. The device of the present invention obviates the usual ratchet and pawl of the roller, and will not only retain the screen material in position to fully occupy the window or door opening, but also serves to retain the screen material in different positions clear of desired portions of said opening.

The device enables a person to not only latch and unlatch an appurtenance, but also to operate or move the appurtenance, as for instance, the device will enable a person to unlatch a slidable s-creen, sash, curtain and the like, and to slide it down or up, or permit it to be drawn up by suitable means, and said device will automatically latch the screen, sash, curtain and the like upon release of the device.

The principal object of the invention is the provision of a device of the indicated character which is simple of construction; one which is of efflcient and substantial design for the purposes mentioned; and one which may be produced at low cost.

The nature of the invention and its distinguishing features and advantages will appear when the following specification is read in connection with the accompanying drawings, in which:

Fig. 1 is an inside view of a roll screen applied to a window frame, said screen being selected to illustrate the device of the present invention shown applied for use therewith, and portions of the screen and the frame being broken away.

Fig. 2 is a fragmentary section showing certain features of the device.

Fig. 3 is a view looking down on the parts shown in Fig. 2.

Fig. 4 is a fragmentary section showing additional features of the device.

Fig. 5 is an enlarged sectional view taken on the line 5-5 of Fig. 1.

Fig. 6 is a sectional view taken on the line 6-6 of Fig. 4.

Fig. '7 is a perspective view of one of the parts lof the device used as a retainer.

1936, Serial No. 69,459

Fig. 8 is a perspective view of a portion of the channel member showing the cam slots.

Fig. 9 is an enlarged sectional View taken on the line 9-9 of Fig. 1.

On reference to the drawings, it will be ap- 5 parent that there is shown a supporting and guiding structure I0 arranged in a window frame I I. The structure I0 comprises a sill bar I2, a housing or casing I3, and tubular guides I4. The lower ends of the guides I4 are adjustably connected 10 with the bar I2 by adjusting screws I5 swivelly connected with said bar as at I6. The upper ends of the guides I4 are connected with the Casing I3. The guides I4 are disposed vertically adjacent the side stiles of the frame II, and each of said guides has a slot Il extending longitudinally thereof throughout its length. A spring roller IS is arranged within the casing I3, and is operatively supported by suitable means which also serves to connect the casing I3 with the upper ends of the guides I4. The casing I3 has an opening extending longitudinally and in communication with the upper ends of the slots I1 in the guides I4, so that screen material I9 connected with the roller I8 may be wound on the roller and unwound therefrom while the opposite side edges of said material I9 moves in the slots I1 respectively. It is to be understood that the roller is under the influence of a rewinding spring to rotate it in order to rewind the material I9 on said roller. The device of the present invention, by way of example, is applied to the lower end of the material I9, to not only retain the material I9 in position to fully occupy the window opening, but also to retain said material in different positions clear of desired portions of said opening.

In accordance with the invention a metal strip equal in length to the width of the screen material I9, together with additional metal strips 40 2l and 22 respectively of the same length as the strip 20, are secured to the lower end of the material I9 by suitable means such as the screws and nuts 23. The material I9 is bent around the strip 2| and said strip is arranged between 45 the other strips 20 and 22, to thus effectually keep the material from pulling away from the strips. The strip 20 has a flange 24 extending along its lower edge throughout the length thereof. Said flange 24 projects inwardly beyond the strips 2| 50 and 22. The opposite ends of all of the strips are notched as at 25 so as to project into the guides I4 respectively through their slots I 1, and so as to clear the screws I5, in order that the flange '24 may be brought down in contact with 55 the sill bar I2. A metal channel member 2B of the same length of the ilange 22 extends along and rests on said flange, the open side of the channel member 25 being closed by the flange. 5 Bearing blocks 2l are arranged within the channel member 26, there being four in the present instance, and two being disposed at the ends of the channel member respectively, and two near the middle thereof. The bearing blocks 2l are l removably retained in place by frictional contact with the opposite side walls of the channel member. Use is made or a pair of latch elements 28 constructed of cross-sectionally round stock.

Each oi said elements 28 consists of relatively l offset portions 29 and 3B respectively, and an intermediate portion 3l which joins theportions 29 and 39. The portions 29 and 3D are disposed parallel to each other, and the portion Iv is dispos-ed at a right angle to the portions 29 and 39.

The portion 29 constitutes a latch portion, the portion Sil'constitutes a handle portion, and the portion 3l constitutes a cam portion. Each of the elements 23 is supported by two of said bearing blocks 21 for movements with respect to said 2a channel member 26. The latch portion 29 of each element 28 is disposed within the channel member 26 and is received by the related bearing blocks 2T so as to move axially in opposite directions, and also to turn. The cam portion 3l SOprojects through a cam slot 32 in the channel member 26, and the handle portion is disposed outside of the channel member. When the latch portion is turning the portions 3D and 3I will each swing in an arc or Vice versa. A tubu- 1ar cross-sectionally round coupler constituting a handle is loosely connected or engaged with the handle portions 30 of the elements 28 so that said portions may have axial and turning movements with respect to said handle, the lat- 40" ter being designated 33. Each of the portions 30 projects only part way into the handle 33. Resilient means in the form of a coil compression spring 34 is arranged within the handle 33 and its opposite ends thereof bear on the handle portions 39 respectively. The spring 34 constantly tends to urge the elements 23 away from each other into projected position for the latching or securing engagement of the latch portions 2S, and said spring 32 permits the elements 28 to be 5,0` moved toward each other into retracted position for the disengagement of the portions 29. The walls of the slots 32 are disposed obliquely with respect to the axes of the latch portions, and constitute means xed in relation to the cam portions 3I to cooperate therewith to cause the movement of the elements 28 toward each other wherein the latch portions 29 move axially and turn in the bearing blocks 21 when the handle 33 is being pulled into the position indicated in V dotted lines in Figs. 3 and 9, thereby disengaging `the portions 29. Upon release of the handle 33 the spring 32 reacts and causing the elements 28 to move into their projected position for the engagement of the latch portions 29. These portions 29 are in line with keeper strips 35 extending along the guides Ill respectively and secured thereto for relative adjustment by screw bolts 36 carried by each strip 35, and received respectively in longitudinal slots 3l in the related guide Ill. Each strip 35 has a series of holes gaged with the strips 35 at different points by rea son of the slots 33, to retain the screen material I9 in diierent positions clear of desired portions of the opening of the frame Il, and that said portions 29 may be engaged in the slots 39 re\ spectively to prevent the material I9 being drawn up by the spring roller I8 beyond a certain point thereby stopping the latching assembly7 just below the casing I3. Thescreen material I9 will then be fully clear of the opening of the frame II. By engaging the latch portions 29 in the lowerrnost notches 38 respectively, the ilange 24 will be in contact with the sill bar I2 thereby excluding nies .and insects, it being apparent that the material I9 will span the area bounded by the strips on the lower end of said material, the casing I3, and the guides I4.

It is to be understood that the channel member 26 may be secured in place in any suitable manner, or its equivalent be formed integral with the strip 20. The channel member 26 may be welded to the strip 26. In the present instance the channel member is secured in place by a pair of retainers 43, there being one retainer associated with each of the bearing blocks 27 at the ends of the channel member respectively. Each retainer 2Q has a channel portion II formed on a plate portion d2. The portion 4I receives the end of the channel member with the block 2l resting.

on the bottom wall of the portion el. The portion 42 has a hole i3 therein to receive a screw bolt i4 which also extends through alined holes inthe strips 22, 2l and 22. When the latch portions 29 are engaged with the strips 35, the retainers le will relieve the flange 2-I of strain.

The strips 35 are vertically adjustable to compensate for adjustments of the sill bar I2 with respect to the guides I2 required to compensate for variations in the height of the frame construction. Thus it is possible to always bring the lange 24 down in contact with the sill bar I2.

From the foregoing it will be obvious that a person may exert a pull on the handle 33 which will cause the disengagement of the latch portions 29 from the keeper strips 35, for winding or unwinding the material I9; that when the pull on the handle is withdrawn the latch portions 29 will be automatically engaged with the keeper strips 35 by the spring 34 to retain the screen material slid down to the desired extent; and that the other advantages mentioned may be attained.

I claim:

1. In a latch, latch members supported for movement into and out of latching position, resilient means acting on said latch members to urge them into their latching position, a handle loosely engaged with said latch members to move 7 the latter in unison, and means iixed in relation Yin relation to said latch members to cooperate therewith, as the handle is moved in one direction, to thereby move the latch members out of their latching position. v

3. In a latch, latch members supported for movement into and out of latching position, resilient means acting .on said latch .members to urge them into their latching position, a coupler constituting a handle slidably and turnably connected with said latch members to move the latter in unison, and means iixed in relation to said latch members to cooperate therewith, as the handle is manipulated, to thereby move the latch members out of their latching position.

4. In a latch, latch members supported for movement into and out of latching position, a tubular coupler constituting a handle slidably and turnably connected with said latch members, a coil compression spring within said handle acting on said latch members to urge them into their latching position, and means ixed in relation t said latch members to cooperate therewith, as the handle is manipulated, to thereby move the latch members out of their latching position.

5. In a latch, latch members, means supporting said latch members for axial movement in opposite directions and also for turning movement, a handle loosely engaged with said latch members, said latch members having axial and turning movement with respect to said handle, resilient means acting on said latch members to urge them axially into their latching position, and means xed in relation to the latch members to cooperate therewith, as the handle is manipulated to turn the latch members, to thereby move the latter axially out of their latching position.

6. In a latch, a pair of elements each constructed of cross-sectionally round stock and consisting of relatively oiset portions joined by an intermediate portion, the offset portions of each of said elements consisting of a latch portion and a handle portion, the intermediate portion of each of said elements consisting of a cam portion, means which receives the latch portions of said elements to support the latter for axial movement in opposite directions and also for turning movement, a tubular handle telescopically engaging the handle portions of said elements, so that the latter may have axial and turning movements with respect to said handle, a coil compression spring arranged within said handle whose opposite ends bear on the handle portions of said elements respectively, and means fixed in relation to said cam portions of said elements to cooperate therewith, as the handle is moved to turn said elements, to thereby move the latter axially to disengage said latching portions against the compression of said spring, and the spring serving to urge said elements axially to engage said latch portions when the handle is released.

'7. In a latch, slidable and turnable latch elements, resilient means to urge said elements into latching position, and a coupler constituting a handle slidably and turnably connected with said elements manipulatable to move said elements into unlatching position.

8. In a latch, slidable and turnable latch elements, resilient means to urge said elements into latching position, and a coupler constituting a handle slidably and turnably connected with said elements manipulatable to move said elements into unlatching position.

9. A latching assembly comprising a channel memben bearings in said channel member, elements having latch portions extending in said channel member and received in said bearings whereby said elements are supported for sliding and turning movements, said elements having handle portions disposed outside of the channel member, a tubular handle whose opposite ends slidably and turnably receive said handle portions respectively for the purpose of turning said elements and allowing the latter to slide with respect to said handle, resilient means within said handle which constantly acts on said handle portions to slide said elements into projected position to engage said latch portions, and cooperative means embodied by said channel member and elements to cause the latter to slide into retracted position to disengage said latch portions, when turning movement is imparted to said elements in response to the movement of said handle.

10. A latching assembly comprising a channel member, bearings in said channel member, elements having latch portions extending in said channel member and received in said bearings whereby the elements are supported for sliding and turning movements, said elements having handle portions disposed outside of the channel member, a tubular handle whose opposite ends slidably and turnably receive said handle portions respectively for the purpose of turning said elements and allowing the latter to slide with respect to said handle, resilient means within said handle which constantly acts on said handle portions to slide said elements into projected position to engage said latch portions, said channel member having slots therein disposed obliquely with respect to the axis of said latch portions, and said elements having cam portions extending through said slots respectively, said cam portions coacting with the walls of said slots to cause said elements to slide into retracted position to disengage the latch portions, when turning movement is imparted to said elements in response to the movement of said handle.

11. A latching device comprising a rigid strip adapted to be attached to a structure mounted for movement, said strip having a flange extending along its lower edge, a channel member extending along said flange and resting thereon, bearings in said channel member, elements having latch portions extending in said channel member and received in said bearings whereby said elements are supported for sliding and turning movements, said elements having handle portions disposed outside of said channel member, a tubular handle whose opposite ends slidably and turnably receive said handle portions respectively for the purpose of turning said elements and allowing the latter to slide with respect to said handle, resilient means within said handle which constantly acts on said handle portions to slide said elements into projected position to engage said latch portions, and cooperative means embodied by said channel member and elements to cause the latter to slide into retracted position to disengage said latch portions, when turning movement is imparted to said elements in response to the movement of said handle.

MINAS YARTYAN.

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