US2861813A - Improved cradle for warp dolly - Google Patents

Description

Nov. 25, 1958 F. E. RAlNEY 2,861,313

IMPROVED CRADLE FOR WARP DOLLY Filed 001;. 4, 1955 2 Sheets-Sheet 1 Fig./

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United States PatentO l IMPROVED CRADLE FOR WARP DOLLY Fred E. Raiuey, Anderson, S. C. Application October 4, 1955, Serial No. 538,397

2 Claims. (Cl. 280-143) This invention relates to improved dollies for transporting warp in a mill and particularly to improvements in the cradles which constitute parts of the dollies.

It is customary procedure to transport warp in mills by placing the same on a dolly and moving it from one location to another. Presently used dollies are fitted with pins which project into the warp in order to hold it fastened to the dolly. This is necessary in that the majority of dollies are made with leather covered cradles, the cradles becoming very slippery after they are used for a short period of time. This makes the pins or pegs essential in order to hold the warp securely on the dolly. The result of using such a dolly is that the pegs break the threads when the warp is placed thereon. Thread breakage is a serious failure in the operation of a mill where eificiency is essential. Moreover, the leather absorbs oil and oily substances and such substances are transferred to the warp as it is being carried on these dollies. The same difliculty is involved in canvas covered dollies. Ordinary wood dollies have been tried without success in that the wood splinters and becomes caught in the threads of the warp.

Accordingly, an object of this invention is to provide a dolly cradle with a molded cap, the cap being made of rubber, either natural or synthetic, or plastic, or a similar material which has the texture, coeflicient of friction and flexibility of or similar to rubber. In this way, the warp is held on the cradle by the friction between the warp and the surface of the cradle cap, thereby obviating the necessity of the deleterious pegs or pins and avoiding the loss encountered by their use and by the transference of oily substances to the warp.

A more specific object of the invention is to provide improved means for fastening the cap to the cradle base, these means serving a dual function of holding fast the means of fastening the cradle base to the dolly frame and of fastening the cradle cap to the cradle base.

A more specific object of the invention is to provide means for attaching a dolly cradle cap to its base by molding the cap directly on the base, there being apertures provided in the base in which projections from the cap are molded, and there being in addition, a wire frame connected to the base and embedded in the cap to thereby hold it firmly in place.

These together with other objects and advantage which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is an elevational view of a typical dolly that is supporting a typical warp, the dolly being fitted with two cradles made in accordance with the teachings of the invention;

Figure 2 is an end View of the structure in Figure 1;

Figure 3 is a plan view of the dolly cradle base;

Figure 4 is a side view of the base in Figure 3;

2,861,813 Ice Patented Nov. 25, 1958 Figure 5 is a longitudinal sectional view taken on an irregular line longitudinally down the cradle;

Figure 6 is a transverse sectional view taken on the line 6-6 of Figure 5; and

Figure 7 is a transverse sectional view taken on the line 7-7 of Figure 5.

In Figures 1 and 2, there is a standard warp form 8 on which the warp 10 is wound. Several types of warp forms are commonly found in mills, depending upon the type of machinery in the mill. Accordingly, the warp form 8 together with the warp 10 thereon is intended to demonstrate generally any type of standard warp and warp form.

Dolly 12 is one of a variety of dollies which are commercially available. The illustrated dolly 12, as do all the others, has a dolly frame .14 from which depends wheel mounts on which Wheels 16 are supported. Some dollies have two wheels, while others have three, and still others have four wheels. Each variety of dolly is presently used and presently available on the market.

The dolly 12 has two cradles 18 and 20' secured thereto on which the warp 10 is supported. The cradles are identical in construction, and therefore, Figures 3-7 describe cradle 18 only. Cradle 18 consists of a hardwood base 22 having a flat surface 24 on the bottom which is brought to bear against the frame 14 when assembling the cradle on the dolly. A smoothly curved upper surface 26, for example, an arcuate surface, is formed on the base 22. Cap 30 is disposed on this arcuate upper surface 26, and the cap has its smoothly con-toured arcuate surface 32 on which to rest the Warp 10 when mounting the same on the dolly 12.

Four bores 36, 37, 38 .and 39 are formed transversely through the base 22. Upper countcrbores 40, 41, 42 and 43, respectively, are drilled or otherwise formed in the base 22. le counterbores opening through the upper surface 26 of base 22 constitute recesses in which to accommodate means for both aiding and holding the cap 30 in place on the base 22 and preventing the bolts 44, 45, 46 and 47 from rotating in their bores. These bolts constitute means for fastening the base 22 firmly on the frame 1 5 of the cradle 12. Accordingly, they pass through openings formed in this base, and nuts are attached to the lower ends of the bolts.

The cap 30 is preferably molded on the base 22. The molding operation will be carried out in the customary way, that is, under heat and pressure. This being the case, projections 50, 51, 52 and 53 are formed in the counterbores 40, 41, 42 and 43 and around the heads of the bolts. These projections not only adhere to the Walls of the counterbores but also adhere to the heads of the bolts and retain the cap 32 in place on the cap base 22 and prevent the bolts from rotating.

Also aiding in holding the cap 30 in place on the base 22 are a number of other projections, such as the one shown in cross-section at 58 (Figure 6), the latter being substantially triangular in cross-section and integrally formed on one wall of the skirt 60, the latter depending from the four edges of the top portion of cap 30 and adhering to the side walls and end walls of the cradle base 22. Projections 58 are fitted in elongated slots 64 (Figure 4) that are formed on an are near the curved surface 26 of the base 22. One or more of the projections 53 has a direct connection to the top portion of cap 30 in order to further assure that the cap does not become separated from the base 20. This direct con nection is formed by drilling a passage 67 at an angle through the top surface 26 of base 22 and into one of the slots 58. The rib 68 forms a direct connection in passage 67 between projections 58 and the main upper body portion of cap 32(Figure 6).

base 22 is a wire frame 71 which extends around the.

four corners and sides of the base 22 near the upper surface 26 thereof. This wire frame passes through corner notches, as those at 70 and 72, in base 22 and extends over the curved slots 64. The ends of the wire frame 71 are formed with eyes 74 and 75, these eyes having nails or screws 77 passed therethrough in order to hold them fastened to the base 22. Additional screws, nails or staples are used where found necessary for firmly attaching the wire frame to the base 22.

It is desired that the cap 30 be molded on the base 22. In the molding process, not only are all of the projections formed, but also the wire frame 71 is molded in the skirt 60.

In practical use, after the dolly is fitted with one or more cradles of the construction described above, the dolly is ready to support a warp cylinder without the necessity of pegs or pins. The selection of rubber or plastic to form the cap 30 is such that a fairly non-slip coaction is had between the warp and the surface 32 of the cradle. Good grades of rubber and plastic are now available which are quite impervious to the attacks of most of the substances with which the cradle is likely to come into contact in a mill. Therefore, the cradle will last along time before any servicing or replacement is necessary.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

1. In a dolly, a dolly cradle comprising a base having a cradle surface, apertures in said base, slots in the sides of said base opening into said apertures communicating with the cradle surface of said base, projections on said base extending into said slots, recesses in the cradle surface of said base, vertical bores formed through said base and communicating with said recesses, bolts disposed in said bores having their shanks projecting from the bottom of said base and their heads disposed in said recesses, a wire frame, fasteners secured to said base and holding said wire frame in position peripherally about said base, a resilient cap molded onto said base having a smoothlycurved surface which provides a seat on which to accommodate a mill warp, a skirt depending from said cap and extending around the edges of said base enclosing said wire frame and said fasteners whereby said cap is secured to said base, projections extending from said cap and accommodated in said recesses to interlock said cap to said base, said cap having portions which are accommodated in said apertures and said slots and enclose sections of said base whereby said cap will be firmly held to said base.

2. In combination, a base adapted to be mounted on a dolly frame, a cap on said base, said cap having a smooth 1y curved surface which provides a seat on which to accommodate a mill warp, projections extending from said cap, said base having recesses therein accommodating said projections in order to interlock said cap to said base, a skirt depending from said cap and extending around the edges of said base, means in said skirt and connected to said base for securing said cap to said base, the last mentioned means including a wire frame embedded in said skirt, said base having fasteners secured thereto and also embedded in said skirt, said fasteners holding said wire frame secured to said base, said skirt having projections extending therefrom, said base having curved slots in which the last mentioned projections are located, and connecting webs extending from the last mentioned projections to a spaced portion of said cap and passing through said passages.

References Cited in the file of this patent UNITED STATES PATENTS 1,233,200 Dessau July 10, 1917 1,310,028 Mahan et a1 July 15, 1919 1,364,330 Stephenson Jan. 4, 1921 1,608,552 Ellis Nov. 30, 1926 1,780,724 Short Nov. 4, 1930 1,784,781 Bronson Dec. 9, 1930 1,947,824 Bronson Feb. 20, 1934 2,026,501 Jensen Dec. 31, 1935 2,084,014 Bronson June 15, 1937 2,332,991 Commire Oct. 26, 1943 2,569,118 Sherman Sept. 25, 1951 2,606,039 La Rue Aug. 5, 1952 FOREIGN PATENTS 370,758 Great Britain Apr. 14, 1932

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