US1688371A - Window-glass channel - Google Patents

Description

Oct. 23, 1928.

E. W. M. BAILEY WINDOW GLASS CHANNEL Filed June 30, 1927 I I r v r r 4 I 1 I I I 1 1 r I I l/ l I I/ 1 1 i r/ a 1 1 1 1 1 4 z I I l r/ I a I. Z a a b Patented Oct. 23, 1928.

EDWIN W. INL BAILEY, 0F AMESBURY, MASSACHUSETTS.

WIN DOW-GLASS CHANNEL.

Application filed June 30,

This invention relates to that class of win-- dow glass channels which are primarily designed to receive the edge portion of the window glass in closed body automobiles and which comprise a sheet metal strip bent in channel form and arranged in a groove formed to receive the same in the window casing.

It is common practice, in the manufacture of metal automobile bodies, to form the channel receiving grooves so that the sides thereof are fixed, thereby making it necessary to place the channel strip in the-groove and secure it in position by some suitable means. While this may beaccomplished by means of bolts passed through the bottom of the channel into the'casing, or by an adhesive, yet either of these means are objectionable, the first because it is too expensive and the second because it is insecure. Moreover, when the channel is felt lined, as shown for example in my prior Patent 1,521,168, the difliculty in attempting to secure the channel by bolts passing through its base portion is considerably increased.

The object of this invention is to provide a metal channel of the type above referred to with means whereby the same will become securely locked in position in a metal sided groove by theract of forcing it therein and without substantial increase in the manufacturing cost of the channel( I accomplish this object b providing the' channel'strip with a series 0 oppositely disposed tongues which are formed with the channel and are arranged topermit the channel to be forced into the casing groove and prevent its removal. I

For a more complete description of the invention, reference is made to the following specification, in connection with the accom; panying drawing in which Fig. 1 is a 'front elevation of a section of window casing containing a metal channel embodying my invention.

Fig. 2 is a side elevation of the channel.

Figs. 3 and 4 are sectional views at lines 33 of Fig. 1 and 4-4 of Fig. 2 respectively, Fi 4 being on a greatly enlarged scale.

fn the drawing a indicates a common form of metal window casing of an automobile body', said casing having a groove 6 therein,

the sides .of which are as nearly perpendicular to the bottom as it is possible to make them with forming dies.

The channel a is of the type shown in .1927. Serial No. 202,650.

said Patent No. 1,521,168, being of thin, flexible and somewhat resilient sheet metal, bent in U-form, to provide a base and two sides.

According to my invention I form from the channel, at suitable intervals throughout the length thereof, a series of pairs of short tongues 05 at each side of the channel by cutting a slit in the side longitudinally, or parallel to the base and cutting two slits transversely from the ends of the longitudinal slit, so that they extend past the line where the side is bent outward from the base, said tongues being bent outward from their respective sides to positions in which they extend slightly obliquely to the plane of the baseor outwardly from the base when the channel is in position.

The end edges e, of the tongues are formed to extend parallel to each other and to the sides of the channel and the distance between said edges is made slightly greater, (in practice a small fraction of an inch) than the perpendicular distance between the sides of the groove 1) in which the channel is to be placed.

With the above described construction, when installing the channel in the casing groove, it will be held in a position in which its bottom will be parallel to the bottom of the groove, and then it will be forced directly therein while held in this relation. As the tongues 03, when the channel is in this position, extend obliquely outward, they will engage the sides of the groove at their edges, or inner corners and will be sprung slightly outward, or in towards the adjacent sides of the channel, as it is forced inward, as from Elie fpll line to the dotted line position of The extent to. which the tongues d are sprung in towards their adjacent sides'is in practice very slight, and is permitted either by a slight bending of the bottom of the c iannel or of the tongues themselves,- or of both, but the action of forcing the channel into the groove causes the tongues to be sprung slightly towards each other by reason of the pressure of the sides of the casing groove thereagainst, so that the tongues will be engaged with the sides of the groove with considerable force, The channel will be forced inward until its base firmly engages the bottom of the groove, as indicated in Figs. 3 and 4. As the tongues d, when the channel is in this position, project outward at a slight angle to the bottom of the groove, it follows that any force tending to pull the channel outward from the groove will tend to increase the force with which the tongues engage the sides of the groove, as the end edges of the tongues already engage the sides of the groove with a firm frictional engagement and any tendency to cause the channel to be pulled out will thereby tend to cause the tongues to swing inward, so as to increase the distance between their edges. lVhether, by this action, the sides of the groove would be slightly spread, or the tongues would be slightly imbedded in said sides, or would be slightly bent, depends on conditions, but the ultimate effect would be the same, which is to prevent the removal of the channel. As a result there will always be a strong frictional engagement of the channel with the sides of the groove tending to hold it in place and tending to increase in force as the demands thereon are increased. It may be noted in this connection that the longitudinal slits in the sides which are made in forming the tongues are square and thus provide a sharp corner for engagement with the sides of the groove when the tongues are bent outward slightly, as shown.

It is particularly important that the trans verse slits which are made in forming the sides of the tongues be extended, to or slightly into the base portion of the channel, so that the tongues will be bent outward at what may be considered as the side edges of the base, or will extend in practical continuation of the base, as distinguished from a formation in which the tongues would extend from the sides somewhat remotely from the base as, in the position shown, the tongues will not interfere with the action of the sides in providing a yielding support for the glass, while they would prevent yielding of the sides if located, for example, near the middle of the sides. The base also forms a rigid means for receiving the thrust of the tongues.

The force of frictional engagement of the tongues with the sides of the grooves is also suflicient to hold the channel against longitudinal movement in the groove, but usually the ends of the channel will be in abutment with the ends of the grooves.

lhe operation of forming the tongues 1n the channel does not materially increase the cost of production of the channel, as they may be automatically formed by a simple punching operation.

While the construction described is particularly advantageous when used in connection with the groove of a metal casing, on account of the dilliculty ordinarily encountered in securing a channel of this type in metal groove, it may obviously be advantageously employed in connection with a channel in a wooden casing.

I claim:

1. A sheet metal window glass channel for a window casing groove, composed of a base and two sides and having a pair of tongues formed therewith and projecting oppositely from the base beyond the sides in position for yieldable engagement with the sides, of a casing groove as the channel is forced towards the bottom thereof.

2. A sheet metal window glass channel for a window casing groove, composed of a base and two sides and having a pair of tongues formed therewith and projecting at opposite sides thereof adjacent the line of connection of the sides and base and extending in slightly divergent relation to the plane of the base, the normal distance between the ends of the tongues being slightly greater than the distance between the sides of the groove and said tongues being yieldable to permit the channel to be pressed into the groove towards its bottom.

3. A sheet metal window glass channel for a window casing groove, composed of a base and two sides and having a tongue out from one side and bent outwardly therefrom along a longitudinal line adjacent the line of connection between the base and side, said tongue being arranged for yieldable engagement at its end with the adjacent side of the casing groove when the channel is inserted therein, to hold the opposite side of the channel in abutment with the opposite side of the groove.

4:. A sheet metal window glass channel for a window casing groove, composed of a base and two sides and having a tongue out from each side and bent outward therefrom along longitudinal lines adjacent the lines of connection between the base and sides respectively, the normal distance betwen the ends of the tongues being slightly greater than the width of the casing groove, and said tongues being arranged for yieldable engagement withthe sides of the groove, to permit them to be sprung outwardly as the channel is forced into the groove towards its bottom.

5. A sheet'metal window glass channel for a window casing groove, composed of a base and two sides and having a tongue out from each side and bent outward therefrom along longitudinal lines adjacent the lines of connection between the base and sides respectively, the end edges of said tongues being parallel to the sides of the channel and the normal distance therebetween being slightly greater than the width of the casing groove, said tongues being arranged to yield outward when engaged at their ends with the sides of the groove as the channel is forced into the groove.

6. A sheet metal window glass channel for a window casing groove, composed of a base and two sides and having a tongue cut from each side by a longitudinal slit therein and two transverse slits which extendfrom the Hill ends of the longitudinal slit into the base portion, the tongues thereby formed being bent outward from the sides to positions in slight divergence with relation to the plane 5 of the base, in which the distance between their end edges is slightly greater than the distance between the sides of the casing groove, and said tongues being adapted to yield towards the sides of the channel as it is pressed into the casing roove.

' In testimony whereof,% have signed my name to this specification.

EDWIN W. M. BAILEY.

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