US1905983A

US1905983A - Detent for window sashes

Info

Publication number: US1905983A
Application number: US534393A
Authority: US
Inventors: John F Harder
Original assignee: Individual
Current assignee: Individual
Priority date: 1931-05-01
Filing date: 1931-05-01
Publication date: 1933-04-25
Anticipated expiration: 1950-04-25

Description

April 25, 1933..

J. F. HARDER DETENT FOR WINDOW SASHES Filed May l, 1931 Summer E J.F.Harder M764 Gttorncg Patented Apr. 25, 1933 UNrr STATES JOHN F. HARDER, F OMAHA, NEBRASKA DETENT FOR WINDOW SASHES Application filed May 1,1931. Serial No. 534,393.

lo vide an improved window fastening device composed of but few parts, which are novell in design and in which the manufacture and installation of the device will be economical and provide for the elimination of the conventional sash catches now employed.

A further object of this invention is to provide an improved window securing device by use of which both the upper and lower sashes of a window may be adjusted with respect to each other and locked together simultaneously in a selected open or closed position as desired. y Y

A Astill further object of this invention is to provide an improved window fastening device in which an improved form of catch is presented and carried by one of the sashes in a manner whereby the same may be caused to co-operate with a rack carried by the opposite sash at desired times, or the same may be secured in a disengaged or open position when so desired.

Other objects and advantages of this invention will be apparent from the following detailed .description wherein the invention will be more fully pointed out.

In the drawing wherein like numerals of reference refer to like or corresponding numerals throughout the several views:

Figure 1 is a vertical section taken through a window casing and the sashes thereof with the new device applied thereto.

Figure 2 is a fragmentary transverse section taken through one side of the same.

Figure 3 is a fragmentary face view of the sashes, showing the invention applied thereto.

Figure 4 is a top plan view of the catch means employed, showing the tongue of the same in a released position, and

Figure 5 is a side elevation thereof, partly in section.

Referring now to the numerals Vof reference upon the drawing for a more particular description, 10 designates a window frame having the parting strip 11, the inside stop 12 and the outside stop 13. The upper sash is shown as having a bottom rail 15 and a side rail 16. The lower sash is illustrated as having a top rail 17 and a side rail 18. The glass is indicated at 19. r

In accordance with the present invention, an elongated strip of sheet metal 20is employed to serve as a rack. This metal strip or rack 2O is corrugated transversely as 65 shown in Figure 1, thereby forming alternate concave and

convex portions

21 and 22 respectively. The strip 20 may be of any suitable length desired, and of desired ornamental appearance as it is exposed to the interiorof the room. This strip 2O is secured to theV side rail 16 of the upper sash in any suitable manner, such as by the use of nails,- screws, or other keepers 23. .It will be understood that the Vmetal strip 2O extends 75 along the side rail 16, that is vertically or in alinement therewith, and that it does not preferably projectV over the glass 19 as bestV shown in Figure 3.

Co-operatingwith the metal rack bar or strip 2O is a catch having a base member 24 on the lower sash whereby the two sashes may bel locked together. The base member or portion 24 of this catch unit is preferably seated upon the upper edge of the top rail 17 of the lower sash, and isv secured thereto as by the use of screws 25 inserted through suitable. apertures 26 formed through said base member 24 for this purpose.

The base member 24 is provided with spaced apart eyes or bearings 27 which may comprise extensions of the base plate 24 curled upwardly in substantially cylindrical form from the outer edge of the plate 24. The bearings 27 are adapted to receive a pivot pin 28,'the ends of which are flattened or upset to prevent axial movement of the pin 28 and its displacement from the catch member. The catch or detent is indicated at 29 and it is curved or bent outwardly and is beveled at its outer end for entrance into the groove or depression 21 of the rack 2O and to clear the convex portion or ridge 22. The detent 29 is carried upon a substantially vertically disposed plate portion 2O which has eyes or tongues 41 rolled over and engaging about the pin 28, and having a pivotal bearing thereon. An expansible coil spring 30 is mounted on the intermediate portion of the pin 28. One end of the spring 30 is disposed against the base member 24 and the other end of the spring 30 against one of the eyes 41 of the catch member. The coil spring 30 acts to hold the detent 29 in yieldable engagement with a notch of the rack bar 20. A finger piece 31 is provided for gripping the catch or detent 29 and it is preferably struck outwardly from between the eyes 41 of the plate 40. The iinger piece 31 extends at substantially right angles to the plate 40. This finger piece 31 is normally disposed slightly above the base member 24 in substantially horizontal position where it may be depressed toward the base member 24 in the act of moving the catch or detent 29 out of engagement with the rack bar 20.

The plate 24 further carries a holding lug 42 pivotally mounted at 43 and, as best shown in Figures 3 and 5, is provided with an upwardly extending portion 44 having a recess or slot 45 in one side. A spring 46 is secured at one end to the member 44 and at its opposite extremity is attached to a rivet 47, or the like, for normally urging the lug 42 to swing in one direction. The pivot 43 is oset to one side of the longitudinal center of the plate 24 so as to bring the slot into register with and to receive the finger piece 31. The spring 46 urges the lug 42 toward the finger piece.

In the operation of the device, assuming that a person desires to provide ventilation within the building, dwelling or sleeping quarters, it is an easy operation to first depress the finger piece 31 and move the detent 29 from the full line position shown in full lines in Figure 1 into position out of engagement with the rack 20, shown in dotted lines in the same figure, and at the same time to swing the lug 42 laterally and then free it to engage the finger piece 31 in the slot 45 of the lug 42 for retaining the detent 29 free from engagement with the rack 20. The upper and lower sashes may now be moved to the desired positions for purposes of ventilation or the like.

To accomplish the foregoing the operator will place his finger or hand upon the finger piece 31 and press the same downwardly and then cause the locking member 42 to engage the finger piece 31 as best shown in Figures 1 and 5. The detent 29 is thus held from the strip or rack bar 2O until the lug 42 is moved laterally to the dotted line position of Figure 4 when the finger 31 is released and the spring 30 causes the detent 29 to engage the rack or strip 2O for selectively locking or latching the sash in a fixed open or closed position. The only permissible movements of the sashes in relation to one another are to close the sashes if they were opened. The configuration of the detent means 29, and action of the spring 30 retains the detent in engagement with the concave portions 21 of the strip 20 at all times whereby the lower sash is not permitted to change its location with respect to the upper sash except only in a manner whereby the opening 50 is made smaller.

It will be obvious that should an unauthorized person or burglar attempt to gain entrance through the window-opening that he cannot enlarge the opening without breaking theJ window sash and create an alarming noise.

From the foregoing description it is thought to be obvious that a window fastening device constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and facility with which it may be assembled and operated, and it will also be obvious that my invention is susceptible of some change and modification without departing from the principles and spirit thereof and for this reason I do not wish it to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice, except as herein claimed.

What is claimed is:

A window fastening device comprising, a corrugated strip adapted to be attached vertically upon a window sash, a base plate forI attachment to an opposite sash, a detent pivotally mounted on the base plate and having its upper end curved and beveled for engagement with the corrugated strip to interlock the sashes against relative overlapping movement, a spring carried by the base plate and engaging the detent to normally urge the latter against the corrugated strip, said detent having an outstanding finger piece lying normally in spaced relation above the base plate and adapted to be depressed for manually releasing the detent from the strip, and a latterly movable holding lug mounted on the base plate in line with the finger piece and biased into a position in engagement with the finger piece, said lug having an undercut slot in one side for receiving the finger piece by edgewise movement of the lug for holding the finger piece downwardly.

In testimony whereof, I have aflixed my signature.

JOHN F. HARDER.