US2550361A

US2550361A - Sitting furniture

Info

Publication number: US2550361A
Application number: US765924A
Authority: US
Inventors: Lofgren Sigfrid
Original assignee: Madrass Fabriken Dux AB
Current assignee: Madrass Fabriken Dux AB
Priority date: 1943-11-16
Filing date: 1947-08-04
Publication date: 1951-04-24
Anticipated expiration: 1968-04-24
Also published as: GB604989A; CH261596A; BE479611A

Description

' April 24, 1951 s, L'OFGREN 2,550,361

SITTING FURNITURE Filed Aug. 4, 1947 2 Sheets-Sheet 1 2 SheetsSheet 2 Filed Aug. 4, 1947 FIE.6

Patented Apr. 24, 19 51 SITTING FURNITURE Sigfrid Liifgren, Malmo, Sweden, assignor to Madrass-Fabriken Dux Aktiebolag, Malmo, Sweden, a corporation of Sweden Application August 4, 1947, Serial No. 765,924 In Sweden November 16, 1943 Section 1, Public Law 690, August 8, 1946 Patent expires November 16, 1963 3 Claims. 1

The present invention relates to sitting furniture and particularly to easy-chairs and the like. constructed as a detachable part, but it is also known to construct also the back and a front edging, supporting the seat in front as detachable parts, which are hooked onto a pair of separate *sideframes forming legs and an arm support on In such sitting furniture the seat is often either side of the easy-chair. The object of this construction is to enable the easy-chair to be disassembled when stored and dispatched, so that little space is required for its accommodation. In the constructions hitherto known, how- 1 ever, it is necessary on assembly of the easy-chair to secure the side frames and the seat by means OfQWOOd screws or the like, which for their applicationrequire a solid screw-driver and in any case some practice in handling such a tool. a The present invention has for its object to provide such a construction that the easy-chair or the like may easily be assembled by practically any- 1 body without the aid of any tool whatever.

The invention will be more fully described with I reference to the accompanying drawings showing some different embodiments thereof.

- Fig. 1 is a perspective view of an easy-chair to which the invention is applied.

.Fig. 2 shows a vertical section through the easy-chair.

Fig. 3 shows in a detail section along the section line III-III in Fig. 1 how the back and the lateral frame members are hooked on to each other.

Fig. 4 is a horizontal section through the easychair seen from below.

Figs. 5 and 6 show detail sections along the section lines V-V and VI-VI in Fig. 4, respectively.

Fig. 7, in the same manner as Fig. 4', shows a somewhat modified embodiment of the arrangement according to the invention.

Fig. 8 shows a detail section along the VIII-V111 in Fig. 7.

,In the same manner as Figs. 4 and 2, respectively, Figs. 9 and 10 show another pair of somewhat difierent embodiments, and finally Fig. 11, in the same manner as Fig. 4, shows still another modification of the construction of the easy-chair.

The easy-chair has two side frames, each comprising a fore-leg I and a hind-leg 2 permanently secured together by means of a lateral edging 3 and by means ofan arm support 4. In the assembled condition of the easy-chair, the two side frames are connected to each other at the back by means of the back 5 and at the front by means line 2 of a front edging 6. Both the back 5 and the front edging 6 are detachably hooked on in the previously known manner to the side frames by means of hooking devices illustrated as far as the back is concerned in Fig. 3, according to which the hooks I are disposed on a fittingattached to one lateral edge of the back and coacting with a fitting 8 which is provided on the side frame and has openings for the said hooks. Thehooking of the back 5 and the front edging 6 on to the side frames may be easily carried out by practically anybody without using any tool whatever. Instead of an edging connecting the lateral frame members to each other at the back, there is provided at the lower end of the back a slat 9 (see Figs. 2 and 10), on which the rear edge of the seat Ill rests. In front, the seat rests on the front edging 6.

In the assembled condition of the easy-chair the back 5 must not be displaceable in relation to r the side frames, as the hooks I would then be disengaged from the fitting 8, so that the easy-chair would come apart. In order to positively hold the back 5 down in its proper position by means of the seat Ill resting with its rear edge against the slat 9, the seat I0 must be secured in its position in relation to the side frames. Hitherto this has been effected by securing the seat to the lateral edgings 3 by means of wood screws, which after assembly of the easy-chair were screwed through the lateral edgings into the wooden frame work of the seat. For this purpose a solid screw-driver was required, which was not always at hand, and in addition there was the risk of the fastening together not being properly carried out or of the easy-chair being damaged, if the work was carried out by a person altogether unaccustomed to the use of tools. According to the invention, the construction is made in such a way that no tool whatever is required for securing the seat in position. According to the invention the lateral edgings 3 are for this purpose provided in their insides with longitudinal grooves I I, and the seat, at the two lateral edges thereof, is provided with projections I2 fitting into the grooves I I, as is best shown in Fig. 5. On application theseat is pushed backwards into its proper position in which the rear edge thereof overlies the slat 9 on the back and thereby locks V two side frames. The grooves II and the projections. I2v coacting therewith, however, are not alone sufficient to fulfill the task of effectively 3 preventing an unintentional falling apart of the easy-chair. There must be provided some means for securing the seat in its proper position, for if the seat could slide forward even very little from this position, it would loose its support on the slat 9 at the lower end of the back, so that the back could come loose from the side frames e. g. when trying to lift the easy-chair by the back. The means of preventing the seat. from.

sliding from the proper position is, according to the invention, a simple stop member, which possibly becomes active automatically whenpushing the seat into its proper position and which in any case renders superfluous'the use of any tool on assembly of the easy-chair.

According to the embodiment shown inFigs. 2, 4 and 6 the stop member is a stop spring [3' attached on the underneath side of the seat l9 and its wooden frame work, respectively, whichon insertion of the seat dodges the front edging 6. when passing the same and then, at that. very moment when the seat. has reachedits proper position, snaps down insidev the front edging 6 and supports itself against the inside thereof, possibly'in a recess provided in the inside of the:

edging 6 for this particular purpose, so that the stop spring t3 must thereafter be pressed up again by special action by means of e. g. the thumb, in order that the: seat shall again be displaceable forwardly.

Accordingto the embodiment shown in Figs; '7. and 8 the stop member is a stop wedge M'i'nsertable by hand" into grooves provided therefor in. the underneath side of the wooden framework. of the seat iii and in the inside of the front edging 6, asisclearly shown in Fig. 8.

According to the embodimentshown in Fig. 9;.

the stop member is a stop arm i5, one end 161 of which is rotatably mounted on the underneath side of the seat It or rotatably bears on a sup-- porting member provided on the seat and the other end of which coacts with e. g. an: arcuate provided for thesame in the inside of the frontedging 6 and in the underneath side of the seat i0.

Additional embodiments of the stop member more or less similar to the above are of course conceivable. The grooves H for the lateral projections 1-2 of the seat provided in the insides of the lateral edgings- 3 should not emerge so as to be visibleat the front of the easy-chair, as the appearance of the easy-chair would thereby be impaired. As shown in Figs. 2, 7 and 9-, the grooves H and the projections 12- may decrease in depth from the rear ends" towards the foreends, which latter may end at some distance behind the front faces of the lateral frame members. However, it is also possible to let the grooves H- and the projections l2 extend all the way to the front side of the side frames and to conceal their ends at the front by letting the front edge of the seat I 9- project over them, as

shown inFig. 10.

What I claim and desire to secure by Letters Patent is:

1. A piece of sitting furniture comprising a pair of spaced apart side frames, a back between said side frames adjacent the rear edges thereof, a first set of interengaging means on. said side frames andsaid: back for supporting said back between said side frames and rigidly interlockingsaid side frames at the rear by means of said back, said interengaging means allowing disengagement of said back from said side frames by moving said back upwardly in relation to said side frames, a transverse bar extending between said side frames adjacent the front edges thereof, a second set of interengaging means on said side frames and said transverse bar for supporting said transverse bar between said side frames and rigidly interlocking said side frames at the front by means of said transverse bar, said second set of inter-engaging means allowingdisengagement of said transverse bar from said side frames by moving said transverse bar upwardly in relation to said side frames, a seat between said side frames extending substantially in the fore and aft direction of said side frames, a third set of interengaging means on said seat and said side frames interlocking said seat and said side frames for preventing movement of the rear portion of said seat upwards in relation to'said side frames, said third" set of interengaging means allowing disengagement of said seat from said side frames by moving saidseat forwardlyin relation to said side frames, a slat on said back, said seat overlying said slat and also said transverse bar for locking saidback and said transversebar against disengaging movement upwards in relation to said side frames, and locking means for locking said seat against movement forwardly in relation to-said side frames.

2. A piece of sitting furniture comprising a pair of spaced apart-side'frames, a back between said side frames adjacent the rear edges thereof, a first set of interengagingmeans on said side frames and said back for supporting said back between said side frames and rigidlyinterlocking said side frames at the rear by means of said back, said interengaging means allowing disengagement of said back from said side frames by moving said back upwardly in relation to said side frames, a transverse bar extending between said side frames adjacent the front edges thereof, a second set of interengaging means onsaid side frames and said transverse bar for supporting saidtransverse bar between said side frames and rigidly interlocking said side frames at the frontby means of said transverse bar, said second set of interengaging means allowing disengagement of said transverse ba from said side frames by moving said transverse bar upwardly in relation to said side frames, a seat between said side frames extending substantially in the fore and aft direction of said side frames, a third set of interengaging means on said seat and said side frames supporting said seat between said side frames and allowing disengagement of said seat from said side frames by moving said seat forframes, and locking means for locking said seatagainst movement forwardly in relation to said side frames;

3-. A piece of sitting furniture according to claim 2, in which said locking means comprises SIGFRID LOFGREN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Number Name Date Clough Dec. 3, 1878 Albergoli Sept. 27, 1921 Sterbenz Oct. 11, 1927 Percival June 19, 1928 Nebel Apr. 19, 1932 Mueller Oct. 26, 1943 FOREIGN PATENTS Country Date Austria Dec. 11, 1922 Germany Aug. 29, 1923