US5173A

US5173A - Machinery for

Info

Publication number: US5173A
Authority: US
Publication date: 1847-06-26
Anticipated expiration: 1864-06-26

Description

UNITED sTATEs PATENT ojEErcE..;`

JOHN MCCUNE, OF SENEGVILLE, OHIO.

MACHINERY FOR CUTTING TENONS 0N ENDS OF SPOKES,

Specification of Letters Patent No. 5,173, dated June 26, 1847,

To all whom t may concern.'

Be it known that I, Jol-IN MGCUNE, of Senecaville, in the county of Guernsey and State of Ohio, have invented a new and useful Mode of Cutting Round Tenons on the Ends vof Spokes of CarriageNVheels After the Spokes are Driven into the Hub, which is described as follows, reference being had to the annexed drawings of the same, making part of this specication. f

Figure 1 is a side elevation of the apparatus.' Fig. 2 'is a front view of cutter stock. Fig. 8 is a perspective view of the side of the knife next the stock, showing the right angled cutter.

The apparatus by which the round tenons arecut on the spokes, consists of a stock or block A, into which are inserted two adjustable posts B, B, containing adjustable boxes C C, in ,which are placed a shaft or mandrel D, having two branches E, at one end, and a crank F at the other end, and a gage G near the middle, said shaft having a longitudinal as well as a rotary motion, produced by the operator applying his hand to the crank F, turning and pressing it forward toward the spoke to be tenanted, or borne up by a spiral spring, wound around the said shaft or mandrel D, and bearing against the gage and post, or caused to revolve or advance simultaneously in any convenient way, the outer extremities or ends of the branches being made straight, and parallel, and in the form of screws, and passed through a stock H, or combined set of blocks, in which the cutter is fastened for cutting the tenons on the spokes. This stock is composed of four blocks H H H H, and four plates I I I I, held together by means of parallel transverse screws J, inserted through them transversely, the two parallel long blocks having shoulders at the middle, against which the two short blocks are brought and secured, and having a metallic block K with a concave rest, for the spoke placed below the knife, to prevent the wearing of the wood, an opening L being made in the center of the combined block, to admit the end of the spoke to pass through, while the cutter takes off the wood from the outside, leaving the center solid to form the tenon, which passes into the center of the said combined block. The cutter-,M, is an obtuse angled plate, with two cutting edges one vertical and the other at right angles thereto. The cutter is fastened over the .central opening by screws, having a throat behind it designed to let the chips pass through it freely. The metallic plates which may be increased Vor diminished vin number, for the purpose of moving the block to which the cutter'is fastenedfarther from the center of the openingfin order to increase the size of the tenen t0 be. cut.l `When` vrequired to be enlarged more plates must be inserted and when required to be diminished the plates must be removed.

The cutter'l M is made of a cast steelplate, Il

in the' form of an obtuse angle, as above stated, with two oblong mortises to admit` set screws, kby which it ismfastened and vad.-

justed to the revolving stock, having one of its sides M made sharp to makethe vertical cut, and a lip m at right` angles, also made ,A l

Sharp fortakins @if the..,SLf1rP1uS Wood from passes through the central opening. The

cutter stock H, is fastened to the two 175 around"'the center, forming thefte'nonwhich'y l The apparatusis secured to the spoke 'to be tenanted by means of two semi-oval straps P P, fastened by their lower ends by screws to the stock A, sok as to embrace the spoke to be tenanted, which is inserted into the space embraced by said straps, bringing that portion of the spoke whichv is to form the shoulder, even with the inner side of the inner strap P which is carried toward the cutter, the space inside the straps if too large for the spokes being bushed, or made to receive other straps, in order vto make it correspond to the sizes of the spokes; the spokes being held firmly therein, by a screw Q, having a semi-circular bed plate R, at the end thereof, which is pressed against the under side of the spoke, drawing the strap P, down upon the spoke, by which the appa* ratus for cutting the tenon is held firmly in a suspended position, upon the end Vof the spoke during the operation of cutting .the tenon. Vhen the angle of the axis of the mandrel or shaft, is required to be changed in order to make it correspond with the'alngle of the required tenon, the nuts a, b on Y the screw posts must be turned so as to raise one end, and depress the other end. The

apparatus being suspended, to the end of a spoke' of a wheel7 in a horizontal position, and the screw Q turned vagainst the under side thereof, forces down the stock A, drawaV round tenon in the center, which passes into the center' of the stock H the full length,

which is determined by the gage collar G,

which is set to strike against the post B, when the cutter has advanced over the spoke as far as it is intended to go. The screw Q.

is then turned to the left, and the apparatus f removed to another spoke Which is treated in a similar manner. And so on with all the spokes;

Thecircle' of the inner circumference of the fellies, must be described on the spokes2 vafter being secured in the hub, by means o1 a tram, or other suitable implement, so as to be seen clearly that the curved end of the strap P may be brought to said scribe, and

, then Athe gage collar G being set in the reyquired position on the mandrel, Will be made l i Vitnesses to come in contact with the post, the moment the cutter reaches the aforesaid' circular line, when the advance of the cutter vvill be arrested, by which operation, all the shoulders of the spokes will be in the same circle.

The vertical knife or cutter is set slightly inclining, so as to cause it to take feed toward the shoulder of the tenon, Without the :necessity of pushing it forward by hand.

I am aware that round tenons have been cut on spokes of carriage Wheels, in various Ways, but, I am not aware of their ever llaving been cut by anapparatus similar to that above described, suspended to the end of leach spoke, during the operation of cutting the tenon; and,

Therefore, What I claim as my invention,

Zand desire to secure by Letters Patent, is

The before described mode of cutting roundtenons on the ends of the spokes of :carriage Wheels, by means of an apparatus constructed as above described, suspended to the end of each spoke, during the operation gof cutting the round tenon thereon.

JOHN MCCUNE.

WM. P. ELLIOT, ALBERT E. H. JOHNSON.