US561684A

US561684A - Mattress-frame

Info

Publication number: US561684A
Authority: US
Publication date: 1896-06-09
Anticipated expiration: 1913-06-09

Description

(No Mom.) f

T. R. MUELLER 8a R. J. PRBUSS.

MATTRESS FRAME. N@ 5611684' Patented'une 9, 1895- jo ffm-f:

UNITED STATES PATENT EEicE.

THEOPHILUS R. MUELLER AND RUDOLF J. PREUSS, OF MILVAUKEE, XVISCONSIN.

MATTRESS-FRAM E.

SPECIFICATION forming part of Letters Patent No. 561,684, dated .T une 9, 1896.

Application filed November 27, 1895. Serial No. 570,292. (No model.)

T @ZZ zt'tom t may concern:

Be it known that We, THEOPHILUS R. MUEL- LER and RUDOLF J. PREUSS, of Milwaukee, in the county of Milwaukee and State of lV iscousin, have invented a new and useful Improvement in Mattress-Frames, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

Our invention has relation to improvements in mattress-frames, having particular reference to that class of mattress-frames in which the woven-wire mattress is attached to a cross-bar at the head and foot, with means device. Fig. 2 is a vertical sectional view on the line 2 2 of Fig. 1. Fig. 3 is a vertical sectional view on the line 8 3 of Fig. 2. Fig. L1 is an inverted plan view of the bracket. Fig. 5 is a vertical section on the saine plane as Fig. 2 of a modified form of construction, and Fig. 6 is atransverse section of another modification. y

Referring to the drawings, the numeral G indicates the side rail of the frame provided near one end with an elongated recess 7, one end of said recess having advisably extending therefrom a groove 8. A bracket is seated upon the cut-away end portion of the side rail and its inner end .rests against the shoulder 9 of said side rail. The bracket consists of a bed-piece 10, an outer side wall 11, end walls 12 12', and a top liange 13, which `[lange extends inwardly7 for a short distance. The

under side of the bed-piece is provided with a rectangular enlargement or projection la, which is of suicient width to just fit in the elongated recess 7, as clearly shown in Fig. 3. A slot 15 extends through the bedpiece and the rectangular projection 1l of said bed-piece, the slot extending longitudinally for a desired distance. Bolt-holes 1G 16 are made at opposite ends of the slot. The inner end wall 12' of the bracket is preferably provided with a projecting tongue 17, which is adapted to lit in the groove S when the bracket is properly adjusted to the side rail.

A movable cross-bar is provided, consisting oi two

sections

18 and 19, provided, respectively, with a registering tongue and

groove

18 and 19. The edge of the wire mattress 2O is adapted to be passed between the opposing faces of the sections of the cross-bar, said sections being held together by means of nails, bolts, or screws, such as 21.

A headed bolt 22 passes loosely through an opening therefor in the end wall 12 of' the bracket and thence through alined openings in the cross-bar 1S 19. The inner end of this bolt is threaded and may extend loosely into an opening in the inner end wall 12', although this is not absolutely necessary, as successful results can be obtained if the end of the bolt terminates short of the innerend wall. The inner end of the bolt, however, is preferably extended into the opening of this wall 12, as the bolt is thereby rendered more rigid and secure against strain.

For securing the bed-piece of the bracket irrnly to the side rail I provide a bolt 23, which passes through the outer of the holes 16, the head of said bolt being eountersunk in the upper iiaring end of the hole. The lower end of the bolt is threaded to receive thereon a locking-nut 21. This threaded en d and the nut thereon are disposed within a recess 25, formed in the under face of the side rail, so that there will be no projecting parts to prevent the side rail from resting smoothly on the bed-frame.

Passing vertically through the end of the section 18 of the cross-bar is a bolt 2U, the

head thereof resting upon the top of said scction of the cross-bar. The lower end of the bolt is threaded, and passing through the lon-- gitudinal slot 15 enters the recess 7. The nut 27 is fitted on the threaded end within the recess, and the width of the recess is narrow enough to prevent the nut from rotating with the bolt when said bolt is turned.

Located upon the threaded portion of the bolt 22 is a nut 28, which nut is adapted to bear against the inner face of the section 18 of the cross-bar. As the wire mattress exerts a pull or tension inwardly on the crossbar, it is obvious that said cross-bar is brought firmly against the nut 2S, so as to practically make the nut in one with the cross-bar. In operation, therefore, by turning the bolt 22 the movable cross-bar will be moved in or out, according as to the direction in which the bolt is turned.

As the strain on the bracket is for the most part at its outer end, the bolt 23 is used for securing the bracket to the rail firmly at that point, while the tongue 17, iitting the groove S, is sufcient to hold the inner end of the bracket in position. If desired, however, an additional bolt could be passed through the inner bolt-hole 16. Thisinner bolt-hole, however, is more especially provided for the purpose of permitting of the bracket being applied at the opposite end of the side rail or of the cross-bar, so as to make said bracket interchangeable. The same is true in regard to the hole in the inner end wall 12', which, not being absolutely necessary for the end of the bolt 22, is more especially provided in order to make the bracket reversible.

The top flange 13, with the bedpiece 10, forms ways or guides,between which the crossbar travels,while the side wall 11 is especially adapted for strengthening the device and for covering its operative mechanism on the outside and protecting it from bedclothing which is placed over the mattress and hangs down on the outside of the frame.

The vertical bolt 26 performs an important function, which will now be mentioned. It is obvious that if this bolt were not provided in case of warping of the movable cross-bar and consequent tendency to bend the bolt 22 would under such circumstances be compelled to withstand the entire strain of preventing the bar from turning. Vhere the warping or shrinking is considerable the bolt itself would also be bent or the bracket itself broken. This is successfully prevented by the provision of the vertical bolt 26, which relieves bolt 22 of the entire strain and at the same time as the lower end of said bolt 26 enters the recess 7 the adjustment of the cross-bar is permitted, all that is necessary in order to obtain such adjustment being to turn the bolt 26 by the application of a wrench or other suitable tool to the head thereof, the nut 27 on the lower end being held against turning by the side walls of the recess 7.

The bottom rectangular projection 14 of the f bed-piece not only serves to strengthen the bed-piece at the point where said bed-piece is slotted, but, furthermore, overcomes the tendency of the bracket to turn laterally with the cross-bar when said cross-bar shrinks or warps, by reason of the fact that said rectangular projection ts in the recess 7. lt will be understood that this device constructed as described is adapted, in connection with another similar device at the other end of the same cross-bar, to adjust the tension of the woven -wire fabric on its frame. The fabric is rigidly secured to the frame at the other end or adjustably secured at such point, as desired.

In Fig. y5 we have shown two modified features of construction, one consisting in arranging the nut 2S on the bolt 22 within a socket 18 therefor in the under side of the cross-bar 19. The edge of the square nut bears against the upper wall of the socket and is held against rotation thereby. The other modiiied feature consists in prolonging the recess 7 downwardly toward the under side of the side rail 6, as indicated by 7', the lower end of said prolongation communicating with a recess 7 in which the nut 27 is countersunk. By this arrangement the de vice is further strengthened and all the several parts thereof securely locked together.

Fig. 6`shows a still further modication, wherein instead of employing the vertical bolt 26,passin g through the cross-bar, through the elongated slot 15, and entering the recess 7, we use a horizontal bolt 29, which passes through an elongated slot 30 in the side wall 11 and enters an opening 31 therefor in the section 19 of the cross-bar. This opening 31 communicates with a vertical recess 32, ex tending up from the under side of section 19, and the extremity of the bolt within the recess carries a nut 33, which bears against the upper wall of the recess and is thereby prevented from turning with the bolt when said bolt is turned. The vertical bolt 26 is preferably used; but this modiiied form just described may, if preferred, be adopted and will serve to effect a similar function as the vertical bolt, although, perhaps, not as efficiently. Under this construction when it is desired to adjust the cross-bar all that is necessary to be done is to apply a wrench to the head of the bolt 29, and thereby loosen the same.

W' hat we claim as our invention, and desire to secure by Letters Patent, is-

In a mattress-frame, the combination, of a side rail having a cut-away portion forming a shoulder, the shouldered portion provided with a groove, a bracket rigidly secured to the side rail, said bracket consisting of a bed-piece, and end walls, the inner end wall bearing against the shoulder of the side rail,

IOO

IIO

In testimony whereof We affix our signatures in presence of two Witnesses.

THEOPHILUS R. MUELLER. RUDOLF J. PREUSS.

Ttnesses ARTHUR L. MORSELL, ANNA V. FAUST.