US1691716A - Caster-mounting bracket - Google Patents

Description

Iov. 13, 1928.

'W. F. HEROLD (FASTER MOUNTING BRACKET Filed Jan. 5, 1926 INIf'ENTOR. WHLTER F HERULIJ;

A TTORNEY.

Patented Nov. 13, 1928.

UNITED STATES 1,691,716 PATENT orr cs.

WALTER F. HEROLD, OF UPPER MONTCLAIR, NEW JERSEY, ASSIGN'OR TO THE JBASSICK COMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORATION 0F- CONNECTICUT.

cnsrnn-ivioun'rine BRACKET.

Application filed January ject of the invention being to provide abracket of this character adapted to furnish a top center pintle bearing, and in which the load strain between such bearing and the supported structure may be transmitted in the most efficient manner, and side strain set up during movement of the furniture will not tend to twist or loosen the bracket.

To this end it is particularly proposed to provide a bracket in which the attaching rivets may be positioned below the top center bearing and in the direct vertical planes of the load strains, and further to provide a lateral area within the bracket constituting an unimpeded free space for the attaching of the rivets at the most desirable points for the efficient support of the load and side strains imposed on the bracket.

Heretofore such brackets have included pintle socket or securing means which eX- tended vertically about the pintle in such manner as to necessitate attachment of the rivets in off-set relation to the vertical load strains, so that there was a decided tendency to distort and loosen the bracket and to impair the swivelling action of the caster.

A further object is to provide yieldable holding means at the bottom of the bracket for retaining the pintle, which will have no tendency to retard the swivelling of the caster, and further to provide such means which at no time is called upon to carry any stress due to side motion or side strains, so that such holding means is practically free of wear or deterioration. V

A still further object is to provide a bracket in the formof a hanger having a top center bearing for the caster pintle, and having its ends extended directly beneath the end of the furniture leg, so that the load strainp rimarily taken up by the attaching rivets is secondarily transmitted directly to thebottom of the leg, so that there is'practically no load strain on the bottom pintle retaining element, and it may therefore be made of relatively thin metal.

Other objects are to provide a bracket which may be economically formed from 5, 1926. Serial No; 79,322.

sh-eel "metal, and in which the metalmay be so shaped as to effectually withstand the excessive loads and strains to which such devices are often subjected.

With the above and'other objects in View, an embodiment of the invention is shown in the accompanying drawings, andthisem= bodim'ent will be hereinafter more fully described with reference thereto, and the invention will be finally pointed out in the claims.-

In the drawings:

Fig. 1 is an elevation of the inner side of p a metal angle iron leg, having a bracket and caster, according to the present embodiment ofthe invention, attached thereto;

Fig. 2 is a rear elevation of the same with the caster removed; Fig. 3 is a top plan view of the structure as shown in Fig. 2;

Fig. 4 is a bottom plan view thereof; Fig. 5 is a vertical sectional View, taken along the line -55' of Fig. '3, and showing the caster pintle in place; r Fig. -6 is a perspective view showing the several parts of the bracket in separated re lation;

.Fig. 7 isa perspective view showing the parts of the bracket assembled; and I Fig. 8 is a plan view of a piece of sheet metal, and showing the manner in which a succession if pieces for forming the main part ofthe bracket maybe cut therefrom in nestedrelation. I

Similar reference characters indicate corresponding parts throughout the several figures of the drawings. I

Referring to the drawings, the caster mounting bracket, according to the present embodiment of the invention, is adapted to be attached to the angle iron metal leglO, and comprises a onepiece'hanger including an upper horizontal portion 11 of substantially triangular shape, and side portions 12 and 13' bent downwardly at right angles thereto in right angular relation to each other, these portions 12 and 13'bei11gspaced along their adjacent vertical edges in coin tinuation of a diagonal edge 14 at the corner of the 'top portion which spans the rounded corner 15 of the leg, so that the bracket will fit snugly at the inner side of the leg, as

-bracket for carrying with respect to the outer vertical edges of ing flange 16 adapted to render the top portion substantially rigid. IA top center pintle bearing portion 17, of truncated cone shape, is pressed upwardly in the top portion 11, and is provided centrally with an inverted cone bearing center 18 pressed therein.

At their lower ends the side portions 12 and 13 are provided with downwardly 6X- tending tongues19 adapted to be inserted through slots 20 in abase plate 21 and bent outwardly beneath the outer marginal edge portions of said plate. The base plate is of substantially segmental shape, its right angular edges beLng substantially flush with the outer edge of the leg, while its rounded edge 22 provides suflicient area within the the pintle retaining means, presently to be described. i

A pintle receiving opening 23 is provided in the base plate in axial alignment with the top center bearing. The pintle retaining meansis carried upon the base plate, and in the present embodiment consists of a cup member 24 having a central pintle receiving opening 25 in line withthe opening 23, and secured by projecting ears 26 inserted through slots 27 n the base plate and bent over upon the under surface, thereof. WVithin the cup member there is loosely engaged and retained a split spring ring 28, its inner diameter being smaller than that of the openings 23 and 25, and its outer diameter smaller than the inner diameter of the cup member this spring ring adapted, as will presently more fully appear, to retain the caster pintle fric- I tionally.

' The bracketis secured to the leg by means of rivets 29 engaged in holes30 in the side portions 12 and 13 and holes 31 in the legs.

The detachable caster consistsof'the usual horn 32 having a caster wheel 33 rotatably carried therein upon an axle 34, and having a pintle 35 secured in its upper transverse portion, the lower end of the pintle being provided with a flange or shoulder 36 engaging the upper surface of the horn. The pintle'is provided at its lower portion with an enlarged diameter cylindrical portion 37, tapering, as at 38, to the upper smaller diameter portion, and between said portion 37 and the shoulder 36 there is preferably formed'a rounded fillet surface 39. vAt the upper end of the pintle there is provideda cone-shaped recess tOadapted to rotatably engage the caster bearing 18. of the bracket. The diameter of the pintleis such that the upper portion will pass freely through the spr ng ring 28, while the lower portion 37 will expand said ring and be thus held thereby against dropping out of the leg, the ring being snugly held about the pintle and freely portion 11 by suitabledies,

rotatable within the cup member 24. In the operative or engaged position of the caster,

as shown in Figs. 1 and 5, the pintle has thrust bearing upon the center bearing 18 of the bracket, being held verticallyby thebase plate, the spring ring 28 firmly retaining it against dropping out, but permitting it to rotate freely within the socket without impedance. The ring may have any desired degree of frictional binding engagement upon the pintle, but in any case will havefree rotary movement within the cup member 24.

It is obvious that with thespresentconstruction, having a top center bearing and a base retaining means spaced therefrom, that the inner surfaces of the side portions 12and '13 are. within an unobstructed lateral area,

so that it is possible, with the pintle removed, to ,secure the rivets. at any desired points therein, the free space within the bracket permitting the use of a riveting machine at the inner side of the leg. In particular, the

construction permits the rivetsto be so placed that their horizontal axes intersect the vert'cally disposed pintle, and the load strain transmitted from the upper bearing to the leg may be transmitted directly in the theoretically correct load strain lines. Thus any unbalanced strain is prevented and the chances of distortion and looseness elimi nated; Obviously, where it has heretofore been necessary to apply the rivets in offset relation, the load strain was unbalanced, and side strain set up through movement of the furniture would tend to rock the bracket about its pivot points, impairing the swivelling act'on of the caster and causing loosev ness. 7

Inasmuch as the'flange ends 19 extend directly beneath the leg end and take up secondary load strains, the base plate 21 is practically free of such strains, and may there fore be formedof relatively thin metal, or other suitable material.

In Fig. 8 I have illustrated the manner in flange 16 of thenextblank. Simultaneously with the bending operation the bearing portion 17 is preferably pressed into the .top

, I have illustrated and described a preferred and satisfactory embodiment of the invention, but itis obvious that changes may be made therein, within the spirit and scope thereof as defined in the appended claims.

Having thus described my invention, what being provided with end flange portions bent I claim and desire to secure by Letters Patent is 1. In a furniture support mounting bracket for attachment to an angle iron support, a removable pintle, element, a transverse sheet metal top portion including a pintle bearing portion, an attachment-portion integral with and bent downwardly from said top portion, said top and attachment portions acting as a suspension support between the pintle and said angle iron support a base plate having a pintle receivin opening and supported by said attachment portion in spaced relation to said top portion, the space between said top and base portions providing a laterally unobstructed pocket between said portions upon removal of thepintle whereby said attachment portion is laterally accessible at its inner side along lines intersecting the pintle when the latter is in place.

2. In a furniture support mounting bracket for attachment to an angle iron support, a removable pintle element, a transverse sheet metal top portion including a pintle bearing portion, attachment portions integral with and bent downwardly from said top portion at two adjacent sides in angular relation to said top portion and to each other, said top and attachment portions acting as a suspension between the pintle and said angle iron support a base plate having a pintle receiving opening and supported by said attachment portions in spaced relationto said top portion, the space between said top and base portions providing a laterally unobstructed pocket between said portions upon removalof the pintle whereby said attachment portions are laterally accessible at their inner sides along lines at right angles to said attachment portions and intersecting the pintle when the latter is in place.

3. In a furniture support mounting bracket for attachment to an angle iron support, a transverse sheet metal top portion including a pintle bearing portion, a pair of attaching portions bent downwardly from said top portion along two adjacent sides in angular relation to each other, a base plate having a pintle receiving opening and supported by said attaching portions in spaced relation to said top portion, said attaching portions outwardly to an extent substantially corresponding to the metal thickness of said angle iron support to retain said base plate and adapted to engage directly beneath the lower end of said angle iron support, whereby thrust on said top portion is adapted to be transferred to said angle iron support, the space between said top'and base ortions providing a laterally unobstructe pocket between said portions whereby said attachment portions are laterally accessible at their inner sides.

4. In a furniture support mounting bracket for attachment to an angle iron support, a transverse sheet metal top portion having a pintle bearing pressed therein, vertical at tachment portions integral with and bent downwardly therefrom along two adjacent sides in angular relation to each other, a base portion having a pintle receiving opening and supported by said attaching portions in spaced relation to said top portion, whereby said vertical attachment'portions are laterally accessible at their inner sides.

5. In a furniture support mounting bracket a transverse sheet metaltop portion having a pintle bearing portion, vertical attachment portions integral with and bent downwardly from said top portion at two adjacent sides at right angles to said top portion and at ri ht angles to each other,'a reinforcing flange bent from said top portion along a third'side diagonally with respect to said attaching portions, a base portion having a pintle receiving opening and supported said attaching portions in spaced relation to said top portion, whereby said vertical attaching portions are laterally accessible at 1 their inner sides.

6. In a furniture support mounting bracket, a transverse sheet metal top portion having a pintle bearing portion, vertical attachment portions integral with and bent downwardly from said top portion in angular relation to each other, integral reinforcing means formed in said top portion in opposed relation to said attachment portions and transversely to a centralvertical plane between said attachment portions, a base portion having apintle receiving opening and supported by said attachment portions in spaced relation to said top portion, whereby said attachment portions are laterally accessible at their inner sides.

Signed'at Bridgeport, in the county of Fairiield and State of Connecticut, this 22nd day of December, 1925.

WALTER F. HEROLD.

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