US448240A

US448240A - Spring-holding-bracket

Info

Publication number: US448240A
Authority: US
Publication date: 1891-03-17
Anticipated expiration: 1908-03-17

Description

PnTnnT FFICE.

CHARLES KADE, OF CIIICAGO, ILLINOIS.

SPRING-HOLDING-BRACKET.

SPECIFICATION forming part of Letters Patent No. 448,240, dated March 1'?, 1891.`

(No model.)

To @ZZ whom, it may concern,.-

Be it known that I, CHARLES KADE, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have inventedpcertain new and useful Improvements in Spring-Holding Brackets, of which the following is a specification.

My invention relates to brackets for attach* in g the ends of coiled-wire connecting-springs to two parts or members-such as the base and rocker of platform rocking-chairs or a door or transom and wall, and generally, whenever two parts are to be connected, so that one may have a limited movement with relation to the other.

These brackets are usually cast from metal, and in order to give them sufficient strength they must be heavy. There are certain difficulties encountered in casting these brackets-such, for example, as providing` them with apertures through or into which the end coils of the spring are to be passed. There are also certain defects in these brackets, of which the liability to break under the blows of the tool used in driving or setting the fast* enings is perhaps the greatest. These wellfounded objections to the common forms of brackets for attaching coiledwire springs has caused them to be displaced to some extent by the use of springs formed from flat strips of steel provided with integral attachingbrackets; but the coiled spring has certain features of superiority over the flat spring which make them preferable and popular.

Itis the object ot' my invention to produce a bracket which is adapted to the requirements of use with coiled-wire springs, and which is free' from the defects and difficulties of manufacture of cast brackets.

In carrying out my invention I form the bracket from a sheet or plate of metal, preferably steel. The plate is taken in the fiat state and blanks are cut ot' such shape that when bent on two parallel lines there will be provided a flat member to be secured to the surface to which the bracket is attached, a iiat member at right angles to the rst and which is adapted to enterbetween the end coil of the spring and the next adjoining coil, and an upturned flange parallel to the firstdeseribed member and perforated for the passage of the end coil, and adapted also to provide a stop therefor to prevent the spring from working out. From the body of the second member there is also turned out a lug, which is perforated and throughwhich the end coil is also passed to prevent the spring from work' ing away from the bracket. The apertures for the passage of the fastenings and for the end coil of the spring are made in the blank.

In the accompanying drawings, Figure l is a perspective view showing a spring connected by brackets of my improved construction to two parts or members, which may he the portions of the rocker and base-rail of a base rocking-chair. Fig'. 2 is a plan view of the blank from which the bracket is cut, said blank having apertures for the fastenings and for the passage of the end coil and a semicircular punching delining the lug before mentioned. Fig. 3 is a side elevation of the bracket complete with the exception of corrugations therein to strengthen the bracket, and Fig. 4 is a similar view of the preferred form of bracket complete.

In the drawings, A B represent two parts connected by the coiled spring C attached to the parts by means of my improved bracket. Said bracket is made from a plate or sheet of metal, preferably steel, the blank being of approximately the form shown in Fig. 2, and having produced therein, by preference, apertures a for the passage of the fastenings, whereby to secure the bracket to the parts A or B, the apertures b for the passage of the end coil of the spring and the circular cutting CZ defining the lug. The blank is then subjected to the action of a press, whereby it is bent along the lines fc x and @j gj to produce the flat attaching member D, the supporting member E, and the upturned flange F. At the same time the lug G maybe turned up so as to bring the aperture therein at an angle to the apertures in the upturned ange. The bracket in this condition is shown in Fig. 3. The final operation consists in stamping or pressing the plate to form corrugations g, in order to strengthen the bracket where alight, thin metal is used 5 but where a heavier plate is employed these corrugatio'ns may be omitted. The spring is attached to the bracket by inserting the free end of the last coil through one of the apertures b in the upturned Han ge, and then by twisting the spring IOO said free end is caused to pass successively through the aperture in the lug and through the aperture at the opposite end of the upturned flange, and is finally brought to rest with its en'd abutting against the outside of the upturned flange, as clearly shown in Fig. l. In this way one-half or more in width of the end coil of the spring may be supported upon a horizontal member of the bracket, While the spring is prevented from moving away from the bracket by reason of the lug and from movement in line With the 11p-turned flange by its passage through the apertures thereof; and it is prevented from unscrewing, as before stated, by the engagement of the free end of the last coil with the 11p-turned flange. When both ends of the spring arc thus secured andthe brackets firmly attached, the spring has its end coils rigidl5T connected to the brackets while it is permitted to flex freely by the opening of its coils to permit the movement of one or both of the parts with relation to each other.

The bracket above described is much lighter and stronger than the usual cast-bracket, and

W it can be attached by driving the screws and Without any liability of breaking the bracket thereby. This bracket may be made of sufficient length to hold the ends of' two springs side by side or in the form of the usual double bracket.

I do not limit my invention to the precise forms of construction nor method of manufacture, nor to the materials used. The lug G might be turned out from the member D instead of from member E, and the flange F might have its central portion cut away, so as to provide lugs instead of a continuous flange, although the flange is preferred, as it strengtheus the bracket. The end coil of the spring might be passed behind the lug instead of through it, and the apertures in flange F may be vertical slots opening at the upper ends of the lugs.

I claiml. Aholding-bracket forcoiled-wire springs, constructed from sheet metal bent to provide a fasteningflange, and a holding member angularly bent at its front margin and provided with separated seats for the end coil and adapted to lform a stop for the free end thereof, and a holding-lug to engage the end coil, substantially as described.

2. A holding-bracket for coiled-wi re springs, constructed from sheet metal and bent to provide a fastening-flange, and a holding member having an angular flange at its front margin perforated for the passage of the end coil and adapted to form a stop for the free end of said coil, and a holding-lug to engage the end coil, said bracket having corrugations therein, substantially as described.

3. A spring-holding bracket constructed from sheet metal bent in parallel lines to provide a member to be secured to an object, a supporting member at rightI angles to the fastening member, said supporting member having turned up from its body a perforated holding-lug, and a marginal flange extending parallel to the holding member and at right angles to the supporting member, said flange being perforated toward its ends for the passage of the end coil of the spring, substantially as described.

y CHARLES KADE. \Vitnesses:

E. L. HUBER, C. C. LINTHICUM.