USRE2904E - Improved machine for rolling, shaping, and forging file-blanks, fliers - Google Patents

Description

UNITED STATES PATENT OFFICE.

DAVID BLAKE, ASSIGNEE OF JAMES DODGE, OF WATERFORD, NEW YORK.

' IMPRovEn MACHINE FA'oR ROLLING, s'HAPlNaAND roRGlNG FILE-BLANKS, rutas, AND orHEh'METALLIc ARTICLES 0F SMALL DIMENSION.

Specification forming part of Letters Patent No. 54,310, dated May l, 1366; Reissued No. 2,904, dated March 31,1868.

To all whom 'it may concern: Beit known that JAMES DODGE, of Waterford, in the county of'Saratoga and State of New York, but now temporarily residing at Manchester,in the county of Lancaster, in the Kingdom ot' Great Britain, has invented, constructed, and applied to use certain new and nset'ul improvements in the mode ot' manufacturing, by rolling and forging, [ile-blanks, Iiiers,7 and other metallic articles ot' small dimension, and in the apparatus for accomplishing the same; and it is hereby declared that the following specilcaton,'taken in connection with the drawings making a part'of the same, is a full, clear, and exact description thereof.

Figure l-represents an elevation, viewed from the left-hand side, of the rolling-machine, showing the peculiar arrangement and construction of the apparatus in connection with the clutch-box for starting and stopping such machine. y Fig. 2 represents a front elevationl ot' theapparatus, showing more particularly the position of the rollers with dies or matrices formed therein for rolling the metal, and the pair of jaws or levers, also supplied with dies or matrices for forging. Fig. 3 represents an elevation, viewed from the right-hand side, of the machine, illustrating more clearly the jaws or levers for forging, and also the arrangement of mechanism for actuating the same; and Fig. 4 represents an arrangement of tappets -for actuating the under jaw i-n place of the eccentrics. f

The invention herein described, so far as it relates to theimprovement in the mode of manufacturing the various articles to which it is adapted, involves the use of two sets of apparatus, one of which must operate upon the metal by rolling it and the other by compressing or swaging it, the shape of the article heing predetermined by the pattern of the acting part of such rollers and compressors. The process of manufacture requires the alternate use of these two sets of apparatus, whose combined effect tends to the production of one result, but whose separate action produces opposite consequences, so far at least that the one tends to correct the errors which the other is disposed to occasion.

The invention of the said JAMESy DODGE retals above the bearings ot' the vtop roller, and

are moved-nearer to or farther from each other by a righ t-and-left-handed screw,which is pro- .vided with a. collar that is held by snugs in a central block. Byturning this screw theV Wedges are moved, and increase or decrease the distance between the rolls. The steps ot the top roller are held up, so as to bear against the wedges, by means ot' springs inserted between the steps of the rollers. The lewer one of vthe rollers employed in the rolling process is furnished with toppels or litters, which act upon the movable lever or jaw of the pair of jaws for forging or pressing the metal, the whole being operated by gearing. The power is communicated to the rolls by means of a clutch-box having steel-faced clutches and worked by levers actuated by a treadle. The upper rolleris furnished with a swell or cam, which at a certain part of the revolution lifts a bolt that raises the clutchbox lever and throws the clutch out of gear, and simultaneouslya projection on the same roller comes into contact with ashort arm or stop and eHects the instantaneous stoppage of the rollers. This takes place at every entire revolution ot' the rollers,so that the attendant has suliicient time to adjust the metal and to place it properly under the rollers or jaws. The operator places his foot on the treadle and withdraws the short arm and bolt. The latter` releases a spring, which forcesthe clutch-box into gear and starts the machine.

In order that the inven tion may be better understood and explained in detail, I have hereunto attached sheets of drawings made upon ascale of about three inches to the foot, simi-` lar letters of reference being marked upon cor responding parts on all figures.

In" Figs. 1, 2, 3, and 4, a a is the framing of the machine, supporting the rollers b and b.-

The top roller, b', is capable of being raised from or lowered nearer to the bottom rolli-*Q'ila` in acentral block, so that by twining the screws e the wedges are moved and increase or decrease the distance between the rollers.

' The top roller, b', is furnished with a swell or cam, h, which ata certain partot the revo'- lntion lifts the bolt i, which raises the lever 7c in connection therewith and actuates the clutchbox l, which is furnished with steel clutches, thereby throwing such steel clutch ont of gear. Simultaneously the projection m on the roller b' comes into contact with the short arm or stop a, secured ou the bell-crank lever o, and thus eii'ects theinstantaneous stoppage of the rollers b and b', which stoppagelis eiected at every entire revolution ofthe rollers, thereby giving the attendant sutlicient time to adjust the metal to be operated upon under the rollers orjaws; and it will be evident that by addin g lifts 7 or cams the rollers may be stoppedl more frequently than' once every revolution.

When ready to start the operator places his i'oot on` the treadle p, which immediately withdraws the short arm or stop n and the bolt t'.

The latter releases the spring g, which forces' (through the medium of the lever 7c) the clutch l into gear and starts the machine. The movement or action of the under lever or jaw employed for forging blanks 7 in conjunction with the xed top jaws, s, is obtained by means of the eccentric t. secured on the pinion or driving-shaft u. (Seen in Fig. 1.)

The rollers b and -b and the pair ot' jaws r which is provided with a collar,f, which is held bythe suugsgg and s are provided with dies or matrices to suit the dilerent form and shape of the lcblanks or other ymetallicarticles required.

The grooves l1;"2f1jn the rollers and the recesses in the trices employed for rolling and forging round, half-round, and angular tile-blanks, andare shown as examples. The movement ot' this lower jaw may also be ei'ected by means of a cam 4or tappets,ifrpreferred, as seen in Fig. 4. In the present instance the rolling apparatus and the compressing or swagin g apparatus we exhibited as mounted upon one frame. This, however, though convenient and desirable, is not essential, as it is obvious that the same mode of operation will be accomplished w-hen -the two sets of apparatus exist as separate machines. l

It is to be understood that the invention of the said JAMES DODGE does not comprehend broadly the usc in alternation of rolling and swaging machinery for forging and shaping metallic articles but What is elamedas the invention 3f thesaid JAMES DODGE isv l l. The combination, with a rolling apparatus having an intermittent movement, ofa swaging ai'iparatus, all constructed substantially as described, and so used alternately that a piece of metal will, as the mean ettect ofthe rolling and swaging operations, substantially in the manner hereinhefore set forth. i.

2. Governing the rotation ot the rollers so as to stop and start such rotation at any desired time or. position by the means described or by other mechanical equivalents.

3. The combination and use 0E the wedges and springs, constructed and arranged as de scribed, for regulating the distance ot' the rollers.

DAVID BLAKE.

Vitnesses: v

WM. W. RICKARD, C. LEONARD PENDLETON.

jaws exhibit the form ot' ma be fashioned into shape,

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