US584281A - Charles b - Google Patents

Description

(No Model O. B. ALLEN. APPARATUS FOR WRAPPING PIPE GORE SPINDLES.

Patented June 8,1897;

No. 584,281. I

lax/6 1,301;

NITED STATES ATENT Fries.

CHARLES l3. ALLEN, OF BURLINGTON, NEW JERSEY, ASSIGNOR TO ANDREW I-I. MONEAL, OF SAME PLACE.

APPARATUS FOR WRAPPING PIPE-CORE SPINDLES.

SPECIFICATION forming part of Letters Patent No. 584,281, dated June 8, 1897. Application fil d October 27, 1896. Serial No. 610,208. (No model.)

To otZZ whom it may concern:

Be it known that I, CHARLES E. ALLEN, a citizen of the United States, and a resident of Burlington, Burlington county, New Jersey, have invented an Apparatus for Wrapping Pipe-Core Spindles, of which the following is a specification.

The object of my invention is to facilitate the wrapping of pipe-core spindles with hay or straw rope preparatory to coating the same with clay or moist earth in order to complete the core.

In the accompanying drawings, Figure 1 is a perspective view of apparatus constructed in accordance with my invention, illustrating the manner of laying the rope on the spindle. Fig. 2 is a front elevation of the apparatus, showing the mechanism for driving the corespindle. Fig. 3 is an end elevation of the apparatus, and Fig. 4 is a sectional view of the guide for the rope.

In molding large iron pipe, such as are used for water-mains, gas-mains, sewers, and the like, it is necessary to provide some means whereby the natural shrinkage of the metal due to cooling may be provided for. The accepted mode of preparing the cores so as to allow for the shrinkage of the metal and one which is in use in all pipe-foundries at the present day is to wrap the core spindles with what is known as straw or hay rope, usually rope made of hay, preferably that from the salt-marshes, which is twisted into shape by means of any ordinary rope-machine. After this rope has been applied to the core-spindle a layer of clay ormoist earth is put over the same and baked on and the core is then ready to be lowered into the moldin which the pipe is to be cast. When the molten metal is poured into the space between the core and the mold, it heats the sheet of earth or clay to such an extent that the rope is burned out and sufficient space is thereby created for the pipe to shrink during cooling without any danger of its becoming fastened to the corespindle.

It has heretofore been customary to wrap this rope 011 the core-spindle by hand. This method is very unsatisfactory, producing a very unevenly-wrapped core and one that is very loose. Moreover, the rope frequently breaks when guided by hand. In view, therefore, of the unsatisfactory manner in which the core-spindle is wrapped by hand I have devised a device for wrapping the core-spindle in such a manner that the rope will be closely and evenly laid 011 the spindle, therebyproducing a better foundation for the coating of clay or earth and insuring the casting of pipe of equal internal diameter and also lessening the danger of the rope breaking.

In Figs. 1, 2, and 3 of the accompanying drawings, A represents the core-spindle to be wrapped, and B the frame for supporting the same and in which it may be revolved. Carried also by the frame B is a guide rail or bar C, upon which is mounted a guide D, adapted to travel thereon for laying the rope on the core-spindle, and E is a reel for carrying the rope. 7o

The core-spindle maybe driven by any suitable mechanism for the purpose of laying the rope on the same, and one form of such driving mechanism is shown in Fig. 2 and will be fully described hereinafter. 7 5

The guide D is provided with gibs cl, adapted to grooves c in the guide rail or bar 0, and a spring 61 is also provided, held in place by an adjustable screw d for the purpose of increasing the frictional contact of one of the gibs with the guide-rail, so as to retard the travel of the guide and thus cause the rope to be wrapped more tightly around the corespindle. A blade F is provided, bolted to the guide D atf, having a portion f for keeping the last laybf rope pushed well up against that previously wrapped. This blade F is bent or curved atf as shown at Fig. 2, so as to permit the rope to pass between it and the guide D and down under the core-spindle, the 0 spindle being revolved in the direction of the arrow, Fig. 3. A hook g is also provided under which the rope passes as it comes from the reel E.

The reel E for the rope is mounted in suit- 5 able supports 6, and a spring 6 is interposed between the end of the reel and one of the supports e for the purpose of keeping the rope at a tension as it unwinds and preventing the unwrapping of the same from the reel should the rotation of the core-spindle be arrested from any cause, but not preventing the unwinding of the rope when it is being laid around the core-spindle.

The guide bar or rail 0 is held in its position adjacent to the core by means of bolts 0, which engage the flange 1) of the frame B and pass through the ends of the guide bar or rail and are secured in place by thumb-nuts c Suitable notches are cut in the flanges of the frame, so that the guide-bar may always be secured in place in its proper position with relation to the core.

In Fig. 2 is shown the mechanism for driving the core-spindle. H II are fast and loose pulleys, respectively, mounted on the shaft H which is adapted to suitable bearings in the frame J. At the outer end of the shaft H is a pinion h, engaging a gear-wheel K, mounted on the end of a shaft K, also adapted to bearings in the frame J. The center of this gear-wheel K is arranged in line with the center of the core-spindle A, and the gudgeon (t of the core-spindle is adapted to enter a pocket in the hub of the gear-wheel K and be held therein by means of a pin 70. The gudgeons a of the core-spindle are adapted to suitable bearings b'in the frame B, and for convenience, as the cores are beinglifted in and out of the bearings all the time, the top half 19 of the bearings is hinged at b so that it may readily be thrown back when the core-spindle is to be lifted out. When the core-spindle is in the frame and the gudgeons are seated in the bearings 19, the hinged top His held in place by means of a screw-bolt 72 In operation the rope to be wound around the core-spindle is first wound around the same two or three times and the end is then tucked in so as to prevent its-pulling out. The rope is then placed over the guide D in front of the blade F and under the hook g. The core-spindle is then caused to revolve and the rope passes from the reel onto "the core-spindle and is laid evenly and firmly by the guide. The curved portion f of the arm F pushes the last lay of the rope firmly up against that previously wrapped and also serves to push the guide D along its rail 0 as the rope is laid on the core-spindle.

Any desired means of maintaining the blade F in contact with the last-applied coil of the rope maybe used, the frictional retarding device, however, being preferred.

I claim as my invention- 1. In a machine for wrapping pipe-core spindles, the combination of the spindle, means for rotating the same, a guide for the wrapping-rope, and means carried by the guide, adjacent to the spindle and conforming thereto, for imparting side pressure to the convolution last applied to the spindle, substantially as specified.

2. In a machine for wrapping pipe-core spindles, the combination of means for mountin g and rotating said spindle,a longitudinallytraversable guide for the wrapping, and provision for retarding the longitudinal movement of the guide, whereby the successive convolutions of the wrapping will be pressed together as they are formed.

3. In a machine for wrapping pipe-core spindles, the combination of means for mountin g and rotating said spindle,alongitudinallytraversable guide for the wrapping, and a frictional retarder for said guide.

4:. 'In a machine for wrapping pipe-core spindles, the combination of means for mounting and rotating said spindle,a longitudinally. traversable guide for the wrapping having a blade for bearing against the side of the last convolution applied to the spindle, and provision for retarding the movement of the guide, whereby the successive convolutions of the wrapping will be pressed together as they are formed.

5. In a machine for Wrapping pipe-core spindles, the combination of means for mountin g and rotating said spindle,a longitudin allytraversable guide for the wrapping having a blade for bearing against the side of the last convolution applied to the spindle and a portion adjacent to said blade for directing the incoming wrapping to the spindle, and provision for retarding the movement of the guide, whereby the successive convolutions of the wrapping will be pressed together as they are formed.

6. In a machine for wrapping pipe-core spindles, the combination of means formounting and rotating said spindle,a longitudinallytraversable guide for the wrapping, a grooved bar on which said guide can slide, a gio adapted to the grooved bar to prevent turning of the guide and provision for retarding the movement of the guide whereby the successive convolutions of the wrapping will be pressed together as they are formed.

7. In a machine for wrapping pipe-core spindles, the combination of means for mountin g and rotating said spindle,a lon gitudinallytraversable guide for the wrapping, a grooved bar on which said guide can slide, a gib adapted to the grooved bar to prevent turning of the guide, and a spring for pressing said gib into the groove and causing-friction al retardation of the guide.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES B. ALLEN.

WVitnesses:

MURRAY 0. BOYER, H. F. REARDON.

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