US1257998A - Push-button latch. - Google Patents

Description

A. BQ GRUBER.

reusH uom LATCH.

APPLICATION FILED, QCT- 1l, 1917.

Patented Mar. 5, 1918.

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PUSH-BUTTON LATCH.

apeeication of Letters Patent.

Patented Mar.. 3, tFile,

application led October lll, 1917. Serial No. 196,065.

To all lwhom t may concern:

Be it known that l, ARCHIBALD B. Groen, a citizen of the United States, residing at San Bernardino, in the county of San Bernardino and State of California, have invented certain new and useful Improvements in Push-Button Latches, and l do declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates generally to hardware, -and more particularly to certain new and useful improvements in push button lalches for use on drawers, doors and the li e.

The primary object of the invention is to provide a latch construction having a sliding bolt and means for sliding the bolt, this means being in push button.

Another object of the invention is to greatly simplify devices of this class, and to provide a construction which will be inexpensive, ecient and reliable in operation, and well adapted to the purposes for which it is designed.

With these and other objects in view, the invention consists o f certain novel features of construction, and the combination and arrangement of parts as will be hereinafter fully described and claimed.

ln the accompanying drawings forming a part of the application, and 1n which similar reference characters designate corresponding `parts throughoutthe several views.

Figure 1 is a horizontal sectional view through a door or the likewhich is equipped with a device constructed in accordance with this invention, shown in section;

Figs. 2, 3, and 4 are detailed sectional views taken on the plane indicated by the lines 22, 3--3 and l-t respectivelyA of Fig. l; Fig. is a disassembled view of a portion of the device, some of the parts of which are shown in L,section and Fig. 6 is a view similar to Fig. 1 of a modified form of latch.

said device being also the form of a plunger or Referring more particularly to the drawings, and especially to Figs. 1 to 5, the letter d desi ates a door or the like in connection with w ich a latch is to be used. The door is provided with a circular mortise B which extends from its outer edge thereof, and this mortise B communicates near its inner end with the retracted portion C of a mortise D, the latter extending transversely of the door A from one side thereof. lf it is desired to operate the door from the other side thereof it is only necessary to duplicate the parts on said other side.

Disposed withinthe mortise D is a tubular case 1, the latter being open at both of its ends and bein provided substantially midway of its en s with an integrally formed internal annular rib 2. The inner edge of the rib 2 forms the wall of a circular opening through which projects a shank 3 which extends axially from oneI end of a latch bolt ll. The vother or outer end of the latch bolt 4 is beveled as at 5 for an obvious purpose.

The free end of threaded to adapt it for connection to the adjacent end of a yoke 6, said end being necessarily provided with an internally threaded opening 7. The other end of the yoke 6 is provided with a slot 8 on its exterior side, and this slot is adapted to receive a screw driver when the yoke/is to be connected to the shank 3 of the bolt 4, it being understood that the bolt 4C is held stationary while the yoke 6 is turned.

rlhe last mentioned end of the yoke 6 is beveled on its inner side at two diametrically o posite points as shown at 9, these points eing opposite the opening 10 which extends diametrically through the yoke, the latter being cylindrical. in cross sectional contour to fit into the rear end of the tubular easel.

The 4reference numeral 11 represents a plunger which is disposed in the retracted portion 6 of the mortise D and which extends through an opening 12 in the adjacent side of the case 1 and has a beveled face 13 to engage the adjacent beveled face 9 of the rear end of the yoke 6. Illhis plunthe shank 3 is screw ger 11 is provided with an axially extending shank or stem 14, the free end of which is screw threaded to t into a suitable opening or recess in the inner side of a button or head 15, bthe latter being disposed in the mortise D adjacent the outer end of the same. The button or vhead 15 is preferably disposed flush with the adjacent face or side opening through of the door A when it is in its normal position.

A wear plate 16 is disposed in abutting relation to the inner end of the larger portion of the mortise D and held in place by means of suitable securing elements here shown in the form of screws 17 which extend into the body of the door A. The plate 16 is provided with a centrally arranged which the shank 14 of the plunger .11 extends. This opening is less in diameter than the plunger 11 so that it serves as a means for holding the plunger in place.

To hold the plunger 11 in its retracted position and incidentally to hold the button 13 normally with v its outer face disposed flush with the adjacent face or side of the door A, a coil spring 18 is disposed between the plate 16 and the button 15, said coil' spring surrounding the shank 14 of the plunger 11 as shown.

The latch bolt 4 is normally held in projected position by means of a coil spring 19 disposed between the head of the bolt and the annular rib 2 formed in the case 1. This coil spring surrounds the shank 3 of the bolt. The operation of the device will be readily understood without description other than stating that in order to retract the latch bolt 4, it is only necessary to move the plunger ,11 farther into the opening 10 of the yoke 6 by pushing or depressing the button 15 farther into the mortise D. This causes the beveled end of the plunger 11 to engage one of the beveled edges of the outer end of the yoke 6 and cause a sliding rearward movement of the yoke and consequently the bolt 4. As soon as the pressure is relieved from the button 15, the various parts of the device will be returned to their normal positions under the action of the coil springs 18 and 19. f

In assembling the different parts of the device together, the coil spring 19 is irst j disposed around the shank 3, and the shank and bolt are inserted into one end of the case 1, the free end of the shank extending through the opening formed by the inner edge of the annular rib 2 into the other end of the case. The yoke 6 is then inserted into this other end of the case, and connected to the shank 3 in the manner hereinbefore explained. The case 1 is then driven into the mortise 3, and will be retained therein by the frictional engagement between the mortise and the outer side of the case and also by the plunger 11 which is later extended through the opening 12 in the case.

In Fig. 6 of the drawings, a slightly modiied form of the invention is shown in which the door A is provided with a mortise B and a mortise E of uniform size throughout its length and of circular shape. The mortise E extends transversely 0f the door from one side thereof into communication with the mortise B. If it is desired to operate the door from the other side thereof it is only necessary to duplicate the parts on said other side. Disposed within the mortise E and having threaded connection with the adjacent side of the case 1 is a tubular lining 20. Slidable in this lining 20 is a plunger 21, the inner end of which is beveled the same as the plunger 11 is beveled, while its outer end is provided with an internally threaded recess 22 adapted to receive the externally threaded end of a stem 23. This stem 23 extends through a bore 24 arranged in a knob 25 and has a head or button 26 formed at its other or outer end. The knob 25 is threaded to the end of the tubular lining 20 which extends a slight distance beyond the adjacent side of the door A, and has its bore 24 enlarged at its outer end as at 27 so as to receive a coil spring 28 which is disposed betweenthe button 26 and the inner end of the enlarged portion 27 of the bore. The action of thismodied form of the invention is similar to that of the preferred form before mentioned.

From the foregoing description, taken in connection with the accompanying drawings, the construction, use and operation of the device will be readily understood without a more extended explanation.

As various changes in form, proportion, and in the minor details of construction may be resorted to without departing from the spirit of this invention, it is to be understood that I do not wish to be limited to the construction herein shown and described other than as claimed. It is also to be understood that this latch device can be proportioned and equipped in combination with various locks and for various purposes.

I claim A device of the class described comprising a, tubular case open at both ends and provided with an integrally formed rib on its interior side midway of its ends, a latch bolt slidable within one end of said case and having a shank projecting axially from the other end thereof through the o ening formed by the inner edge of said ri into theJ other end of said case, the free end of said shank being screw threaded, a yoke disposed in said other end of said case and having an internally threaded opening in its lnner end to removably receive the threaded memos end of said shank, the other end 0f Said'yoke bemg provided on its exterior sid@ Wlth a slot to receive a tool for turning said yoke tothread it to said shank, a e011 spring sur- 5 rounding said shank and disposed between the head of said bolt and. the adjacent side vof said rib, and means engaging said yoke for moving said bolt.

In testimony whereof have hereunioeet my hand in the presence of ibwo subseribmg 10 Witnesses.

A RCMBALD B. GRUBER.

Witnesses: l

LEANDER A. CLARK, Louis Gr. Moyens.

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