US2070963A - Strap for upholstery springs - Google Patents

Description

Feb. 16, 1937.

s. E. S'CHWARTZMAN Filed June 20, 1955 I w 0/ w 5 g LET (Q/X. fl v A M b. w u.

I N VEN TOR.

S m H M Wy M .N 5 F". w W Q MQ Patented Feb. 16, 1937 UNITED STATES PATENT OFFICE 2 Claims.

The invention relates to the assembling of upholstery springs such as are used in bed springs, furniture, automobile seats and the like and more particularly to a strap for use with such springs.

It has for one of its main objects to provide a strap which may be used for effectively securing the spiral springs, commonly used in the upholstery art, so as to prevent them from tilting or shifting. Another object is to provide a strap which will make it unnecessary to tie or knot the ends of the spiral springs, as it is now customarily done.

A still further object is to provide a strap of this type which may be used with upholstery spiral springs of various kinds and sizes and which may be assembled with such springs in various manners. Additional objects are to provide a strap of extremely simple construction which can be manufactured and assembled with the spiral springs at a very nominal cost.

These and various other objects and advantages Will be readily understood from the following description and from the accompanying drawing of preferred embodiments of the invention,

in which, however, various modifications may be made without departing from the scope of the appended claims. In the drawing Fig. l is a plan View showing several spiral springs assembled with straps made in accordance with the invention,

Fig. 2 is a side view of one of the straps shown in Fig. 1,

Fig. 3 is another plan view showing the straps assembled to the spiral springs in a somewhat difierent manner,

Fig. 4. is a plan view of a modified strap, and

Fig. 5 a side view of Fig. 4.

Referring now to Figs. 1 and 2, in which a plurality of spiral springs are shown at it], the

invention resides in the construction of the straps shown at H. These straps are each made up of a metal strap in the center of which a slit I2 is sheared. The metal on opposite sides of the slit is preferably offset as shown in Fig. 2 so as to form a slot of sufficient width to enable it to be passed over the end convolution I3 of any of the spiral springs l0. Circular openings I4 are preferably punched at each end of the slit [2, while holes l5 are punched in the outer ends of the straps.

As shown, the straps are placed across the end convolutions of the springs by entering these through the slots in the straps. One of the straps connected with each spring is also pushed through the slot in the other strap as plainly shown.

In Fig. 1, the ends of the straps are connected together, so that the holes l5 of two adjacent links align, and helical springs l6 are secured in these holes to connect together the adjacent rows of spiral springs. The helical springs shown at I! 5 may be connected directly to the frame in which the whole assembly is contained. Similar springs are employed at the opposite end and at both sides of the assembly to connect it to the frame when such is used. 10

In Fig. 3 the spacing of the spiral springs I0 is somewhat different, and in this case the individual straps are connected together by means of spiral springs l8. It Will be noted, that when the straps are placed as illustrated in Figs. 1 and 3, the free 15 end IQ of the spiral spring I!) is held in the hole l4 together with a part of the second convolution of the spring. This construction secures the end of the wire and eliminates the necessity of knoting the wire as is now commonly resorted to. 20

In Figs. 4 and 5, two slots 29 and 2| are sheared in the strap and the part 22 between these slots offset sufficiently to form a slot 23 through which the wire of the spiral spring may be passed. Olfsets, such as shown at 26 and 21, may also be 25 made transversely of the strap, adjacent to the openings [4, so that the convolution of the spring II] will rest in these offsets.

While the straps have been shown attached diagonally to the spiral springs, it is evident that 30 they might as readily be assembled at right angles to the whole structure. In like manner, it is also evident that, instead of shearing a slit in the straps, a piece of the metal might be cut away as to form a slot. 35

From the foregoing it will be seen that these straps are very simple in construction and that they are easy to attach. It will also be seen that they will effectively secure the spiral springs in their correct positions and prevent them from 40 tilting, as is often the case in the ordinary construction. It will also be noted that, by making the straps in various lengths or by arranging them in various manners, they may be assembled with the spiral springs in many different 45 designs or combinations.

Having described the invention and its objects what I claim is new and wish to protect by Letters Patent is:

1. A device of the class described comprising 50 a pair of intersecting straps each having a slot intermediate of its ends and one strap passed through the slot in the other; the upper convolution of a spiral spring passed through the slots in both straps; the slots made of a length 55 substantially equal to the diameter of the said slots in both straps; the slots made of a length convolution; and the straps located s'ulestantialsubstantially equal to the diameter of the said 1y at right angles to each other. convolution; the straps located substantially at 2. A device of the class described comprising right angles to each other; and means provided 6 a pair of intersecting straps each having a slot in each end of each strap for connecting them 5 intermediate of its ends and one strap passed with other adjacent straps.

through the slot in the other; the upper convolution of a spiral spring passed through the SAMUEL E. SCHWARTZMAN.

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