US2146864A - Studio bed - Google Patents

Description

Feb 14, 1939. E. J. STAUF'FER ET AL 2,146,864

STUDIO BED Filed Oct. 15, 1936 s Sheets-Sheet 1 Feb. 14, 1939. E. J. STAUFFER ET AL 2, L

- STUDIO BED Filed Oct. 15, 1936 3 Sheets-Sheet 2 Feb. 14, 1939. i E. J. STAUFFER ET AL 2,146,864

STUDIO BED Filed 001;. 15, 1956 3 Sheets-Sheet 3 Patented Feb. 14, 1939 STUDIO BED' Edward J. Stauifcr and Adolph Knosher, Naperville, Ill., assignors to Kroehler Mfg. 00., Chicago, 111., a. corporation of Illinois Application October 13, 1936, Serial No. 105,388

Claims.

This invention relates to improvements in studio beds and consists of the matters hereinafter described and more particularly pointed out in the appended claims.

The invention relates to a type of davenport or divan which includes a supplemental frame normally telescoped within the main frame of the davenport, but capable of withdrawal for the purpose of extending the main frame to provide a bed. In structures of the kind as heretofore made, the withdrawal of the supplemental frame from and its return to its normal position within the main frame, has been attended with difiiculty because it is almost impossible to move the supplemental frame within the main frame in either ,direction without moving one end ahead of the other, with the two frames in oblique relation, resulting in a binding between the ends of the supplemental frame and the ends of the main frame.

The object of the present invention is to provide operative connections between the main frame and the supplemental frame which will maintain the two frames in parallel relation when the supplemental frame is withdrawn from or pushed back into the main frame, with the two ends of the supplemental frame advancing or retreating abreast, so that there is no possibility of binding between the ends of the two frames.

Another object of the invention is to provide a construction of. the kind by means of which the withdrawal movement of the supplemental frame is positively limited when the supplemental frame has been fully withdrawn.

Another object of the invention is to provide legs for the supplemental frame at its back side, which is adjacent to the main frame when the supplemental frame is in extended position, which legs are automatically folded up out of the way when the supplemental frame is returned to its normal position in the main frame, and are automatically brought to vertical supporting position when the supplemental frame is withdrawn from the main frame to its outer limit of movement.

These and other objects and advantages of the invention will appear more fully as we proceed with the specification.

In the drawings: 7

Figure 1 is a top plan viewshowing the main frame at the right and the supplemental frame at the left as they would appear when entirely separated, but with the supplemental frame in alignment with the main frame as in the path it would follow when being moved into and out of the main frame.

Figure 2 is an end view of the supplemental frame.

Figure 3 is an end view showing the supple- 5 mental and main frame, with the supplemental frame withdrawn to its limit from the main frame.

Figure 4 is a perspective view of the back side of the supplemental frame.

Figure 5 is a perspective view of the front side of the main frame.

Figure 6 is an end view of the main frame, with the supplemental frame pushed into its normal position entirely within the main frame and showing in dotted lines the rails and mechanism connecting the two.

Figure 7 is a detail perspective view to be more fully described hereafter in the specification.

Figure 8 is a plan sectional view on an enlarged scale showing the details of the mechanism at one end of the supplemental and main frames.

Figure 9 is a view representing a section of Figure 8 in a plane indicated by the line 9-9 of Figure 8.

Figure 10 is a detail view of a locking device included in the mechanism.

Figure 11 is a sectional view showing said looking device in position.

Figure 12 is an end elevation of a part of the mechanism in the position occupied as the one leg of the supplemental frame begins to be folded up by the operation of the mechanism when returning the supplemental frame to the main frame.

Referring now to that embodiment of the invention illustrated in the drawings: Ill indicates the main frame of a studio bed and I I, a supplemental frame adapted to be telescoped laterally thereinto. The main frame comprises end members I2, I2, back and front members I3, I4, mounted on pedestals I5, I5, which support the main frame. The supplemental frame II comprises end members IB, l6 and front and back members l1, I8. Supporting legs I9, I9 are fixed to the front members ll. These parts are all of familiar construction and. eed no further description.

Like housings 20, 20 are mounted at the back corners on the end members l6, [6 of the supple- 50 mental frame II. An equalizing rod or shaft 2|, located below the plane of and near the frame member I8, is rotatively mounted in said housings. 22, 22 indicate ratchet wheels fixed on said shaft 2| within said housings. The shaft 2| pro- 55 jects at its ends, as indicated at 2 la, beyond said housings for a purpose presently to be described.

A hook-like keeper 23 is pivoted in each housing adjacent the ratchet wheel 22 therein on a pin 24, so as to be capable of an up-and-down swinging movement in a plane parallel to said ratchet wheel (see Figures and 11). Said keeper has a laterally disposed tongue 25 which is adapted to engage between the teeth of said ratchet wheel when the keeper is permitted to drop by gravity. This locks the ratchet wheel and also the equalizer shaft 2| against rotation. When this hook end 23a is engaged from below in a manner to be later described, the keeper 23 is swung upwardly on its axis pin 24 so as to release, the ratchet wheel 22.

On the ends of the main frame are provided horizontal metal channels'2l, 21 which provide ways for the housings 20, 20, when thesupplemental frame 7 II is telescoped into the main frame l0. Each channel 21 has a bottom flange or rail 28 provided with holes 29 spaced longitudinally of the rail-,adapted for engagement as a rack with the teeth of an associated ratchet Wheel 22. The holes 29 in the rails 28 on the two ends of the main frame are disposed in lines extending parallel to the front and back mem: bers of the main frame. Thus, when the ratchet wheels 22 are engaged in said holes and the supplemental frame is pushed inward or outward with reference to the main frame, the equalizing shaft 2|, rotating with said ratchet wheels, will insure an identical equal movement of each end member l6, l6 of the supplemental frame with reference to each end member l2, I2 of the main frame. j V

The front ends of the rails 28 are inclined downwardly, as indicated at 2811 (see Figures 3 and 5) and the web of the channel of each way is formed to provide an abutment-30 at the end of said inclined part and at one side of the line of the ratchet holes 29, in a position to be struck by the associated end 21a of the equalizing shaft,the two abutments acting to arrest and limit the withdrawal movement of the supplemental frame from the mainframe. V

I Short plates 28?), extend parallel to the downturned'ends 28a of the rails 28 and are spaced above the same, so that when the housings are pushed backward into the ways provided by the channelsZT, the ends 2laof the equalizer bar will engage the bottom edges of said plates and be held so that the ratchet wheels 22 are held in engagement with the rack presented by the holes 29 on the rails 28. The plates 28b terminate short of the abutments 30' to leave spaces for the passage of the'projecting ends 21a of the equalizer bar 2| and the engagement of the ratchet wheels 22 with'the ratchet holes 29 in the rails 28 when first assembling and connecting the supplemental frame with the main frame. In this operation-the hooked ends 23a of the keepers 23 engage the inclined ends 28a and are lifted so as to disengage the lateral tongues of said keepers from their respective ratchet wheels 22, which are then free to rotate.

The channels 21, 21 have top horizontal rails 39a, providing the top of the ways in which the housings 20, 29 traveland each housing has struck up from it a lug 3| (see Figures 4 and 11) for guiding engagement with said top rail, which holds the associated ratchet wheel in operative engagement with the bottom rail after the shaft ends 2la have passed rearwardly beyond the plates 28!).

32, 32 indicate legs pivotally mounted upon the end members [6, I6 of the supplemental frame at pointsspaced forward of the housings 20, 20. 33, 33 indicate angle plates having upright members 33a, 33a secured, respectively, to the end members It, IS of the supplemental frame and horizontal members 33?), 33b secured, respectively, to the bottom sides of said end members and the back members. Each leg 32 is pivoted to an upright member 330. of the angle member by a loose rivet 34. A horizontally movable latch plate 35 is pivoted by a rivet 36 to the horizontal member of each plate 33. Said latch plate is notched on its edge to provide spaced, opposed shoulders 31, 31, which are adapted to engage opposite edges of the associated pivoted leg 32 and lock it in vertical position. Each latch plate is provided with 2. depending flange 38 formed to present front and back cams 39 at its opposite ends. Each latch plate is normally held'in engagernent with the inner face of the associated leg 32 by means of a coiled spring 40 taking be-- tween an ear 4| fixed to the horizontal member 331) of the angle plate 33 and the depending flange 38 of the latch plate 35. At the top of each leg 32 and extending towards the associated housing 29, is provided a heel 42. A laterally extending shoulder 43 on the angle plate 33 limits the swinging movement of the leg 32 towards the back by its engagement with the top side of said heel.

44, 44 indicate plates fixed to and rising above the front member 14 of the'main frame in a line of travel of the heels 42 of the legs 32 and of the cams 39, 39 of the latch plates 35. (See Figures 1 and 5.)

The end members I6 of the supplemental frame have fixed to their outer faces near the front of the supplemental frame, inclined plates 41 having notches 46 (see Figures 2 and which notches are adapted to engage the top edges of the plates 44, 44 on the main frame, when the supplemental frame has been pushed fully home into the main frame,the bottom edges of the plates 41 sliding up on the top edges of the plates 44 to raise the front of said supplemental frame until the plates 44 come abreast of the notches 46 when the front end of the supplemental frame drops with said notches 46 in locked engagement with the plates 44.

To assemble the supplemental frame with the main frame, with the operating devices hereinbefore described properly connected, we proceed as follows: Consider the two frames arranged in alignment, as in Figure 1, with the supplemental frame supported onits legs l9 and 32. The back of the supplemental frame is brought to position in close proximity to the-main frame, with the ends 2la of the equalizer bar above the spaces between the plates 2% and the abutments 39 at the front end of the channel bars 21. The back end of the supplemental frame is then dropped. This brings the ratchet wheels 22, 22 into engagement with the holes 29 of the rack rails 28. In this way an identical tooth in each ratchet wheel is brought into engagement with the end hole 29 of the rack bar. At the same time the hook end 23a of each keeper 23 engages the rail end 28a and lifts the keeper, thus disengaging the tongue 25, from the associated ratchet wheel 22, leaving the ratchetwheels and equalizer shaft 2! free to rotate.

The supplemental frame is now pushed into the main frame. In the first part of this movement, the rear cams 39 of the latch plates 35 strike the sides of the upright bars 44, as illustrated in Fig ure '7. This swings the latch plates 35 away from the legs 32, so as to free said legs for pivotal movement. As the supplemental frame is further pushed into the main frame, the legs 32 strike the top edges of the upright plates 44 on the main frame and are swung upwardly on their pivots 34 to horizontal position,the latch plates being maintained in inoperative position by reason of the engagement of their flanges 38 as they pass along in contact with the vertical edges of the upright plates 44.

In the further movement of the supplemental frame into the main frame, the bottom ends or the rollers thereon of the legs 32, ride on the rails 28 of the channels 21. The movement of the supplemental frame is continued until it has been shoved fully home into the main frame. Just as or before it reaches this position, lugs 45 extending from the rails 28 near the back main frame member l3, are struck by the heels 42, now in vertical instead of horizontal position. In the movement of the supplemental frame into the main frame, the latch plates 35 have been held from engaging position by the legs 32. When the heels are struck as above described, the legs are disengaged from the latches and the heels come into locking position between the shoulders 3'l, 31 of the latches 35 to hold said legs in a position above the rails 28, so that, when the supplemental frame is withdrawn from the main frame, said legs will not strike the upright plates 44 at the front side of the main frame (as shown in dotted lines in Figure 6). Just as the supplemental frame reaches its innermost position within the main frame, it is locked in this telescoped relation by the engagement of the notches 46 on the inclined plates 41 with the upright plates 44 on the main frame.

To reverse the operation and bring the supplemental frame into extended relation, the front side of the supplemental frame is first lifted to disengage the notched plates 41 from engagement with the plates 34. The supplemental frame is then withdrawn,the legs 32 in this withdrawal movement finally passing above the plates 44. When the supplemental frame has almost reached its outermost position, the forward cams 39 on the latch plates strike the plates M and disengage the latches from their locked relation with the heels 42 of said legs. This permits the legs to drop by gravity towards vertical position and as the heels 42 pass the plates 44, the bottom ends 420, of said heels strike or drag over the top ends of said plates it and act to complete the swing of the legs 32 to vertical position in which the legs are arrested by the engagement of the heels 42 with the lugs 63. The legs are then locked in this position by the latches 35 which swing to engage them between the shoulders 31 of the latches. The withdrawal movement of the supplemental frame is arrested by the equalizing shaft ends 2la. striking the abutments 39 at the ends of the channels 21.

It will be obvious from the foregoing that from the time the supplemental and main frames are assembled and their operating mechanisms connected, in any movement of the supplemental frame, either into or out from the main frame, a parallel relation is maintained between the two frames and that there is no possibility of distortion of the ends of the two frames at any time. The proper assembly is insured by the spaces between the abutments 36 and the plates 28 at the forward ends of the channels, which enforce the engagement of like teeth of the two ratchet wheels connected by the equalizer bar into identical and corresponding holes 29 in the ratchet rails 28, and the equalizer bar maintains identical and equal rotative movement of the ratchet wheels as the supplemental frame is pushed intoor out of the main frame.

While in describing our invention we have referred to certain details of construction and arrangement, it is understood that the invention is in no way limited thereto, except as may be pointed out in the appended claims.

We claim as our invention:

1. In a studio bed having telescoping main and supplemental frames, said frames having end members, means providing horizontal ways on the end members of the main frame, each way including a rack rail provided with an abutment at its forward end, short guide plates above said rails spaced to leave gaps at the rear of said abutments, housings mounted at the corners of the supplemental frame at the back side thereof, an equalizer shaft mounted in said housings with its ends projecting beyond said housings, and ratchet wheels fixed to said equalizer shaft within said housings, said equalizer shaft ends being adapted to be inserted through said gaps at the rear of said abutments to bring corresponding teeth of said ratchet wheels into engagement with corresponding teeth at the front ends of said rack rails.

2. In a studio bed having telescoping main and. supplemental frames, said frames having end members, means providing horizontal ways on the end members of the main frame, each way including a rack rail provided with an abutment at its forward end, short guide plates above said rails spaced to leave gaps at the rear of said abutments, housings mounted at the corners of the supplemental frame at the back side thereof, an equalizer shaft mounted in said housings with its ends projecting beyond said housings, ratchet wheels fixed to said equalizer shaft within said housing, said equalizer shaft ends being adapted to be inserted through said gaps at the rear of said abutments to bring corresponding teeth of said ratchet wheels into engagement with corresponding teeth at the front ends of said rack rail, and a gravity operated keeper in each of said housings normally locking said ratchet wheels against rotation but being adapted to be disengaged when said ratchet wheels are initially engaged with said rack rails.

3. In a studio bed having telescoping main and supplemental frames, said frames having end members, means providing horizontal ways on the end members of the main frame, each way including a rack rail having a short, downwardly inclined front end provided with an abutment at its forward end, short guide plates above said rails spaced to leave gaps at the rear of said abutments, housings mounted at the corners of the supplemental frame at the back side thereof, an equalizer shaft mounted in said housings with its ends projecting beyond said housings, ratchet wheels fixed to said equalizer shaft within said housing, said equalizer shaft ends being adapted to be inserted through said gaps at the rear of said abutments to bring corresponding teeth of said ratchet wheels into engagement with corresponding teeth at the front ends of said rack rail, and a gravity operated keeper in each of said housings normally locking said ratchet wheels against rotation but being adapted to be disengaged when. said ratchet wheels are initially engaged with said rack rails.

4. In a studio bed having separable telescoping main and supplemental frames, means providing horizontal ways on the main frame, each way including a rack rail, housings mounted at the back of the supplemental frame adapted for movement in said ways, an equalizer shaft mounted in said housings, ratchet wheels fixed to said equalizer shaft within said housings, and means on said ways for guiding said shaft to bring corresponding teeth of said ratchet Wheels into engagement with corresponding teeth at the front end of said rack rails, when inserting said supplemental frame into said main frame.

5. In a studio bed having separable telescoping main and supplemental frames, means providing horizontal ways on the main frame, each wa including a rack rail, housings mounted at the back of the supplemental frame adapted for movement in said ways, an equalizer shaft mounted wheels are initially engaged with said rack rails. 15

EDWARD J. STAUFFER. ADOLPH KNOSHER.

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