US78769A - James swan - Google Patents

Description

J. SWAN.`

VW' Making Augers.

Patented June 9, 1868. Y

WHW/[555.5 .i

7%- Wm i NFETERS. PHOTO LITHQGRAP gnitru'tetes atrat @Hirn JAMES SWAN, CF SEYMOUR, CONNECTICUT.

'Letters Patent No. 78,769, dated June 9, 1868.

IMPROVEMENT IN THE MANUPACTURE OF AUGERS IANI) BITS.

' TO ALL WHOM ITMY CONCERN:

Be it known that I,JAMES SWAN, of.'Seymou1, in the county of` New Haven, and State of Connecticut, have invented anewand useful Improvement Ain Machinery forV Manufacturing Augersand Bits; and I do hereby declare that the following is a. fullpclear, and exact description thereof, which'will enable those skilled in the art to make and use the same, reference beinghad to the accompanying drawings,`forming part of thisspeci- A fication.

This invention relates ton. new andimproved machine for upsetting the lips of curved or gauge-lip angers and bits. 4 Y

In manufacturing angers and bits of the above description, it is necessary to leave a. sufficient thickness of metal at the bit and to admitof the' spur or screw being formed, after which the lips require to be reduced and brought to a. knife-like edge at their cutting-parts, which process is termed upsctting, and hashitherto been mostly done by hand, but the most skillful workman can scarcely obtain a.' perfect form of cutters, and perfect uniformity in the two 'lips israrely ever obtained.

My,inventionY operates well, and performs the work expeditiously, with but very little manipulation on the Ypart of the operator.

In the accompanying sheet of drawings- Figure 1 isla front view of my `invention. I j

Figure 2, a plan or top view of the lower part of the, same, the upper part being removed, as indicated by the line :v 2:, fig.- 3,

Figure 3, a side sectional View of the same, taken in the line y y, iig. 2.

Figure 4, an undervor face view of the swaying 01' drawing-dic.

Figure 5, a side view of an auger to be operated upon.

Figure 6, n. side view of an auger finished by my invention.

Similarvletters of reference indicatecorresponding parts.

A A represent two jawsconnected at one end by a pivot. a, and having` dies, B B, inserted :in their opposite ends to receiveand hold the screw-portion of the auger C while vits cutters or lips, b b, are being operated upon, Athe two jaws being brought together und held by a lever, D, as will be fully understood by referring to figs. 1 and 2. v

The upper surfaces ofthe dies B B are grooved or hollowed'out to conform to the desired shape of the lips or cutters, a-s shown at c c in fig. 2. A

E represents a. curved'standard,i`which is attached to one of the jaws of the machine.` This standard projects forward,.and has a cylindrical socket, G, at itsfront end, in which avertical arbor, H, is fitted and allowed to turn and work'up and down freely. n i

iOn this arbor H, within the socket G, there is fitted a spiral spring, I, the upper end of the spring being attached to the arbor, and-the lower end attached to the bottom of the socket, asshown clearly in iig. 3.

This spring I has a. tendency to`kcep|the arbor H elevated as high as it is designed to go, and tothe lower end ofthe arbor there is attached a cylindrical hub, d', in which the sive-.ying ordrawing-dies J J are fitted, the lower surfaces or faces of which :are slightly inclined. i I

On` the upperpart of'the arbor H there is tted loosely a. bevel-wheel, K, into which a corresponding whcel,

L, gears, the latter being-on a horizontal shaft, M, the bea-rings of which are connected to the socket Gr.

The beviel-wheel K has an upright pin, d, Yattached to it, and a pin,- e, projects horizontally from the upper part of the arbor H, as shown in iig. 1'. A

The shaft. M has a, cam,N, firmly `secured uponit,vagainst which the upper end' of arborH is kept in cona tact by the spring I. A i

By this arrangement of the cam, spring, and gearing, as shown and described, two motions are given the arbor H, to wit, an up-and-down and a rotary movement, the arbor being depressed or forced downward by the notion' of the prominent portion of the cam N, and forced upward by the spring I, when the prominent portion of the cam passes the upper end of the arbor. s

The rotary movement is given the arbor when the latter is forced down iu consequence ofthe pin d of Vthe wheel K coming in contact With the pine ofthe arbor. v

A quarter revolution, however, is only given the arbor H, as, Whentlie arbor is thrown upward, the pin e ofthe arbor clears the pin cl ofthewheel K. l

The arbor H, in turning thevquarter revolutioiras specified, Winds up thespring I,' which, as soon as the arbor rises suiici'ently to cause the pin eto clear the pin d, throws or turns back the arbor H to its original position, alpin,f, in the hub, d', of-the arbor coming in contact with a, pin', g, in the under side of the standard E, these pins serving as a stop, (see tlg. l.)

Y The dies J J, when the arbor H is forced down and turned, act upon the lips or cutters b b ofthe auger or bit, and draw themlout to athiu edge, giving them the proper shape 0`r form. v

In fig. 5, bx represents the thick edges of an unfinished lip or cutter, and b, 5g. 6, the inishedlipfor cutter operated upon by mydinv'ention.

I I claim as new, and desire to secure by Letters Patent- Y 1. The rising and falling, and partially-rotating arbor H, provided ivith the swaying and drawing-dies J J, in combination with the holding-dies B B, all arranged substantially as and for the purpose set forth.

2. The combination of the cam N, bevel-wheels K L, pins d e, arbor H, and the spring I, all arranged to operate the arbor the manner substantially as and for the .purpose set forth.

JAMES SWAN. Witnesses:

CHAs. DOUGLAS,

E. H', KNIGHT.

Images