USRX2I2 - Improvement in machines for cutting wood and other screws - Google Patents

Description

W. KEANE.

Swaging Screws.

RX NO. 2. Reissud April 16, 1838.

qqxx REWEDDDC' UNITED STATFS THADDIUS PATENT OFFICEO NEW YORK.

IMPROVEMENT IN M'ACHlNES FOR CUTTING W000 AND OTHER SCREWS.

;MM 0x w/r Spcrliczilion forining pni-t of Letters Patent dntcd l"clrunry l`l, 1336; lcis'iue No. 2, (lnted April 1G, 18158 .To (dl wlwm it ma concern:

Be it known that "ILLIAM KENE, of the town of Monroe, iu the county ofOrange and the State of New York, was the iuventor of a new and useful Improveinent in the Machine for Making Screws, principally of the kind denominated 'ood-Screws; i' and I do hereby declarc that the following is a full and ex-' act description thereof.

In the acconipanying drawings, A A, Figure 1, represent the frame of the machine which is to support the revolving spindles and other parts of the apparatns. The threads are to be cut by means of two 'circular dies which re' 'olvc upon suitable axes with their periph eries nearly in contact with each other. A semicircular or other suitably-formcd groove is made iu the peripheryof each die, and upon these the thread ot' the screw is cut, by which a corresponding thread is to be formed upon the blank which is to bc made into a woodscrew. A tool very similar in form to this part of my instrument is used byjewelers and 'other small workers in metal for the purpose of milliug or forming threaddike orname'nts spirally upon gold wire and other articl. In Fig. 2 two such dies are represented as stationed upon the under side of a circular plate of iron which forms the cover of a revolving box. B, Figs. 1 anl 3, to' be present-ly describ a a are the revolving dies, which will vary,

in size according to the size of the screw which they are to cut; but for a screw of a medium size they may be about au inch and threefourths in daincter and half an inch thiek. Dies of this size mayhave their shafts b b 'half an inch'in diameter and two and a half inches long, revolving on ccntcxs adjusted by screws. The shafts are placed parallel to each other, as shown in the drawings. A greater number of such dies n'iay be used-as three, for example in wh ch their axes not be parallel to each other. The iron p lG is shown in place in Fig. 1, forining the co'ver of the box B, which revolves with the shaft DI upon which it is lrmly fixed, E E be= ii'g'whirls for the driving-bands from any suita e power.

B is a box of east-iron,\\'liich may bc seven inches high and six inches in diamet/er. The main use of this is to contain a mixture of oil and water, soapsuds, or othersuitable lubricating fluid which will keep the dies and the blank constantly lubricated during the operation of cutting,` and thus efi'eetually prevent the heating and weariug of the.parts,while it insu'res the smooth cutting of the screw. The shaft D may be two feetlong and one inch and a half in diameter. It is bored through its whole length, so as toreceive a sliding rod, F F, about three-fourths of an inch in diameter, around which it is to revolve freely.

G G are Steps attaehed to the frame A', upon which the shaft D revolves, being perforated also to allow the sliding rod to pass through it. This sliding rod is attached to au independent sliding frame, the upper and lower bars of which, c and d, are connected by the vertical rods e e. The slidng rod F doesnot revolve with the spindle D, through which it passes; but it has an independent sliding motion through said shaft, and also through the lower bar, d, of the sliding frame. huh,f, fastened upon it by means of a tighteningscrew, from which -proceed the guidearms g g, which slide upon the rods ee and prevent the rodl F from turning.

H is a spring which bearsupon the bar d and upon the hubf, allowing the rod to be' forced down, but reaeting against the hub, so as to'tend to' raisc it until it comes into coutact with the step G.

On the upper end of the slide-rodF there is a steel serew, h, the threadof which fits that; of the circular dies a a, and' it will be seen, therefore, that if this steel screw is raised, so

as to stand between the dies, the revolution.

of the box B, in which they are contained,will, by the aid of the screw, cause themto revolve on their axes, and lthat a like effect would be produced by raisim,r or lowering the sliding rod while the box B at rest. The cap or cover O of the box B has a perforation through its center, which is immediately-over the grooves in the dies, and through which' the blanks to be cut are fed to thern'. The blanks which have been' prepared by being headed und 'It hasa notched are passed into this opening, so that the point of theintended screw will rest upong V is the screw-holder which passes through the bar c, and is afilxed in its place by a tightening-serew, by which it is adapted to screws of various lengths. A leather strap,j, one endof whiclris made fast to the bar c of the sliding frame, has its opposite end attaehcd to and passing round the c'ircular hub k,which is made'to turn by means of the handle l. \Vhen these handles are foreed down,the sliding lframe, and consequently the screw-holder, will be raised. while the spring lH tends to bring it back-to its former position when al-` lowed to do so. The iron fixtures m m, at'

.tached to the frame A' A',sustain the hub k and its appendages. If square-headed screws are to be cut or other forms be' required, the holding apparatus must be adapted thereto.

Instead of .the spring H H,weighted levers have sometimes beenused, and they have been variously modified, so as to produce the same effect, and they answer the purpose perfectly well; but being move eomplicated than the plan above described, they are not preferrcd; nor does the claim to invention rest iu any degree upon one or the other ofthesc modes of procedure, they being deemed equivalents.

\Vhat is claimed as new in the above-described machine, and as the invcntion of the within-named WILLIAM KEANE, is-

1. The niauner of Cutting the threads upon the screws by means of maclrinery constructed and combined together substantially 'in the manner hcrein set forth-that is to say, hav ing two or more rcvolving c'ircnla-r dies with the required thread cut upon their periplr eries, and so placed that they may revolve vertical'ly on their axes, and be carried round horizontally with and by means of a revolving box, iu which is containcd a suitable lnbricatingiluid, as described.

2. The general construction and arrangc' ment of the respective parts of the said niachine, by means of which the blank is held while being cut, and liberated when cut, and again fed with a new blank, together wjth such variations of said construction and arrangement as shall not essentially alter its Character or mode of operation.

THADDEUS SELLICK.

\Vitnesses:

JAMES MILLER, RICHARD GURXEE.

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