US3019045A - Door handle assembly - Google Patents

Description

Jan. 30, 1962 E. JAGGI 3,019,045

DOOR HANDLE ASSEMBLY Filed June 4; 1959 2 Sheets-Sheet 1 v ,,r"//// IIIIIIIIIIIIIII// Jan. 30, 1962 E. JAGG| 3,019,045

DOOR HANDLE ASSEMBLY Filed June 4, 1959 2 Sheets-Sheet 2 United States Patentf) 3,019,045 1 DOOR HANDLE ASSEMBLY Emanuel Jaggi, 2 Hoenggerstrasse, Zurich, Switzerland Filed June 4, 1959, Ser. No. 818,179 Claims. (Cl. 292-353) The present invention relates to a door handle assembly, and has the main object of providing a device for the connection of the connecting bar of a door with the door handles, door knobs or the like in a manner allowing easy assembling and dismantling without the use of a tool.

In most of the devices used for connection of door handles or door knobs to a connecting bar, the latter has at both ends, in its longitudinal center, a serrated slot into which pins pushed through holes of the handles penetrate. Embodiments are also known, in which the bar, usually of a square profile, is provided near the ends at one of its faces with serrations into which engages a spring, a pawl or a pin. The'embodiment having pawls is complicated and involves the use of screws having conical heads, while thespring is-pressed by a screw or the like from outside into the serrations.

In all known devices of this kind the door handles or the like must be drilled through for the insertion of screws or pins. As is well known, this involves the danger that the screws or pins may work loose as a result of many pulls upon the handles or the like, and may even drop off and so get lost. When the screws and pins are secured by riveting or in a similar way, dismantling becomes extremely difficult, and in any case is impossible without the use of tools.

All these disadvantages are overcome by the present invention, according to which I provide a door handle assembly, comprising in combination: a pair of door handles each having a stem provided with a bore and at least one row of serrations in the said bore, a connecting bar having serrations upon one face thereof complementary to the said serrations in the bore, and at least one compression spring attached to the end portion of the said connecting bar on its face opposite to that upon which said serrations are formed and abutting the inner face of the bore of the associated door handle, said spring biasing the serrations of the said connecting bar and of the said door handle into engagement.

These and other features of my said invention will become apparent from the following description of an embodiment thereof given by way of example with reference to the accompanying drawing, in which:

FIG. 1 is a plan view, partly in section, of the device,

FIG. 2 is a perspective view of the connecting bar,

FIG. 3 is a broken plan view of one end of the connectmg bar illustrated in FIG. 2 shown on an enlarged scale.

F111 this a perspective view of a variant form of the connecting bar,

FIG. 5 is a plan view, partly in section, similar to FIG. 1, showing a variant form of the device, and

FIG. 6 is a semi-diagrammatic end view of still an other form of connecting bar.

As shown in FIG. 1, on both sides of the door 1 a door handle 2 is arranged, each being rotatably journalled with its round stem 3a in a facial disc 3 fixedly connected to the door. Each door handle 2 has a bore 4 of square profile, one face of which, preferably the one nearest the grip of the door handle, is provided with serrations 5. The latter may be cast in, rolled in, or arranged in a ledge 6 inserted and fixed within the bore 4.

The connection of the two door handles is eifected by the connecting bar 7, over the ends of which the same are pushed. The connecting bar has likewise a rectanguother, a compression spring, e.g. designed as a leaf spring.

9, assuring this engagement at each end of the bar. As will be seen in the drawing, these leaf springs lie each in a recess 10 of the connecting bar 7 and are fixedly attached to the bar by a rivet 11 or the like. The leaf springs have an outwardly cambered shape and are pressed against the connecting bar when the door handles are pushed over the same. Thereby, automatically, the serrations 5 and 8 are forced into one another and the connecting bar and the door handles are connected with one another with a goodfit, which is due particularly to the form of teeth (FIG. 3') chosen.

For detaching a door handle 2, the grip thereof is firstly gripped with the whole hand, and by a pressure towards the door 1 in the direction of the arrow I the spring 9 in this door handle is completely pressed on to.

the connecting bar. Such motion of the door handle also pivots the handle about its lowermost contact with the' facial disc 3 to raise the connecting bar 7 and disengage the serrations 5 and 8. As a result of this disengagement, the handle may be pulled off of the connecting bar by pulling it away from the door in the direction of the arrow II while holding it in the position just described.

Practical tests have shown that when opening and closing the door a pressure in the direction I and a pull in the direction II are never applied to the door handle at the same time. Accordingly the possibility is excluded that the door handle may be pulled oif the connecting bar inadvertently.

From the foregoing it is clear, that the door handles and the connecting bar can be connected with one an other without the use of any tool, and can be separated from one another in the same way. This is an essential economic advantage, particularly when it. is taken into consideration that this work can now be carried out in much shorter time than hitherto. Moreover in known securing devices, as experience has shown, the screws or pins serving as securing means are often lost and have to be replaced.

The serrations 8 of the connecting bar 7 may be stamped or pressed upon the bar, or the bar may be cast with the serrations upon it; or the serrations may be pressed into a separate ledge 14 (FIG. 4) to be attached to the connecting bar. It is also possible to connect the connecting bar 7 at one end fixedly to one door handle 2, and to provide it with serrations and a spring at the other end only (FIG. 5). In certain circumstances serrations 8 and leaf springs 9 may also be provided on two faces (FIG. 6). Instead of a door handle of course a round or olive-shaped door knob may be used.

While I have described herein and illustrated in the accompanying drawings what may be considered typical and particularly useful embodiments of my said invention I wish it to be understood that I do not limit myself to the particular details and dimensions described and illustrated; for obvious modifications will occur to a person skilled in the art.

What I claim as my invention and desire to secure by Letters Patent, is:

1. A door handle assembly, comprising in combination: a pair of door handles each having a stem provided with a bore having at least one row of transverse serrations in the bore, a connecting bar having serrations complementary to the serrations in the bore in each door handle, and at least one compression spring attached to each end portion of said connecting bar on its face opposite to that upon which the serrations are formed and abutting the inner face of the bore of the associated door PatentedJan. so, 1962,

handle, said spring biasing the serrations of said connecting bar and of said door handle into engagement.

2. A door handle assembly as claimed in claim 1, wherein the. said compression spring is attached to said connecting bar at each end and is a leaf spring.

3. A doorhandle assembly as claimed in claim 1, wherein thesaid 'connecting bar. has a square profile, two

of said rows of serrations being provided on the same face of then. said connecting bar, each of the said doorhandles being provided with complementary serrations capableso fi being pushed over thesaid rows of serrations at. eachend of the connectingbar;

4. A v door handle assembly as claimed in claim 1, \vhereiniherowsof serrations of said connecting bar and said bore are provided upon ledges, and saidledges arev fixedly attached to the" longitudinal side portion of said connecting bar and within the bore insthe stem of each said doonh'andle, respectively,

5. A door handle assembly comprising a door handle formed ,with a stem having. arectangular bore, a connecting bar ofrectangular cross-section adapted to-pass through thedoor andLto enter the rectangular bore in the stern ofsaid door handle, said handle having in the bore of it sqstemaa series, of transverse serrations formed on each of two adjacent longitudinalfaces in the bore, and an end springstwillholdthe series of serrationsin said bore in; contact with the-t respective series; of serrations. on said;

bar, andwhereby radial movement of said handle vwith; respect to said bar; may compresssaid springs, permit dis;

engagement of said serrations, and permit removal of;

said handle from said connectingba z ReferencesCited inrthe file of thispatent UNITED STATES. PATENTS 346,566 Tippett et al. Aug. 3,,1886- 654,102. McHardy July 17', 1 900 1,951,188 Elaherty Mar. 13, 1934 2,517,075 Aquila Aug. 1, 0 2,534,012 Gadpaille l )ec. 12, 1950 i i l

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