US252666A - Hoop-cutting machine - Google Patents

Description

(No Model.)

L. HOLT.

- HOOP CUTTING MACHINE. No. 252,666. Patented Ja11.24.1882.

UNITED, STATES ATRNT HOOP-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 252,666, dated January 24, 1882.

Application filed November 23, 1881. (No modeb) To all 'whom it may concern Be it known that I, LEONARD-HOM, a ritiY zen of the United States, residing at Concord,

inthe county of Merrimack and State of New Hampshire, have invented certain new and useful Improvementsin Hoop-Cutting Machines; and I do hereby declare that the following` is a full, clear, and exact description of the same,

reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Myinvention relates toimprovementsin hoopcuttiug machinesforcutting what arev known as half round hoops77 from an Ordinary round pole with the bark left on.

In my machinealongitudinal section of proper dimensions for a finished hoop is cut from an ordinary hoop-pole by revolving circular knives or cutters in a single passage through the machine, leaving the outside bark unbroken and the inside of the hoop smooth and complete,

without requiring further dressing or planing. I attain these objects by the mechanism and construction substantially as shown in the accompanying drawings, in which-f Figure l is a' perspective view of a machine embodying myinvention; and Fig. 2 is a detail view of the circular cutters, showing the manner of connecting themto the arbors.

The frame H, with its supports g, and standards K K form the frame-work of the machine,

adapted to carry the operating parts.

In the standards K K, upon each side, suitable recesses are made for'the insertion of Babbitt journal-boxes for bearing the journals of the arbors ff', upon which the cutters are secured, and these arbors project Abeyond the standards K K to allow the affixing ofthe requisite gearing to communicate power.

Between the standards upon thelwer arbor, f, is fixed a circular cutter, A, wthsharpeuell edge, and directly above ita similar cutter, A', is fixed upon the arborf', the lowermost point in the circumference ot' the vupper cutter, A', being as near as possible to the uppermost point in the circumference of the lower cutter, A, without actual contact, their cutting-edges revolvinginthesameperpendicularline. These cutters are fixed upon their respective arbors at any desirable point between the standards K K, and are held rigidly in position by sleeves a n, of suitable material, to insure the necessary support for the circular cutters inclosed between them. the sides of the knives A A' the sleeves taper in opposite directions nearly the whole length ofthe arbors between the standards K K,and assist in strengthening the arbors near the cen ter, where it is most desired. These sleeves are bored through the center, so as to slip on the arbors against fthe cutters after they are placed in position, and are then secured by nuts a at their outside ends, screwed tightly against the ends of the sleeves, as shown in Fig. 2. These nuts are turned directly upon ,the arbors and secured by threads cut for that purpose at suitable distances from either end.

At one side of the cutters A A' an upright roller, B, is sustained in a vertical position by journals at top and bottom suitably secured to the frame-work which connects the standards K K.

means of the crank e, attached to the end ofthe shaf'tp, or by other power by means ofthe-beltpulley d upon. the same shaft. This shaft p is supported byjournal-bearings upon the frame H, and may have connected to it a suitable pinion, meshing with the teeth upon a large gearwheel, s, in the usual mannen. The gear-wheel s is rigidly secured to one end of the arborj', which carries the lower cutter, A, and upon the opposite end of said arbor isa gear-wheel or pinion, b, engaging with the teeth ofa piuion, c, upon the end of the upper arbor,f'.

, When it is desired to operate the machine it is set in motion and one end of a round hooppole, such as forms the usual material for that purpose, is pressed against the'projecting front edges of the circular cutters at a point midway between the sleeves n n, its side resting lightly against the upright roller B. The cutters A A', turning in a direction toward the rear of the machine, draw the pole forward as the cutting proceeds, and serve to make the machine selffeedin g without the use of feed-rolls either in front of or behind the cutters. The entire absence offeed-rolls or bearings of an y kind except the cutters allows the operator to move the pole which is being cut in any direction; and the diameter of the cutters being such that a sufficient space is left between the sleeves a n to From the point ofcontact with IOO through all its sinuosities, and obtain a hoop' of the same thickness throughout its entire length.

Additional hoops may be cut from the same pole by turning a dilit'erent section to the cut,

ters, and repassingit through the machine, so long as a sufcient width ot' bark remains to makeacomplete hoop. The space between the roller B and the sides of the cutters A A', Fig. 2, determines the thickness of the hoop, and the roller B, being adjustable laterally at each end, may be set so as to cut hoops of any desired thickness.

It will he noticed in Fig. 2 that the edges of the circular cutters A A' are beveled so as to cut a flat and smooth surface upon the inside of the hoop. I am thus enabled to producea hoop with a finished inside surface, so as to obviate for most purposes the necessity for any further planing or dressing.

What I claim as my invention is- 1. In a hoop-cutting machine, the combination, with the upright adjustable roller B, of the circular cutters A A', having their edges beveled or inclined, substantially as and for the purpose set forth.

2. InV a hoopcutting machine, the upright adjustable roller B, in combinatiouwith the screw-threaded arbors ff', carrying circular cutters A A', secured thereon by sleeves n and screw-nuts a., substantially as and for the purpose specified.

In testimony that Iclailn the above I have hereunto subscribed my name in the presence ofy two witnesses.

a LEONARD HOLT.

Vitnesses:

V. CHARLES HAs'rINGs, E. H. W ooDMAN.

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