US102924A - Ellis doty - Google Patents

Description

s iitted States flaiwt @titille vented' certain new "and .useful plained. i y l Figure lis a side elevation of a shearing-machinc Y with my improvement applied.

ELLIS ncrv,- or JANnsvILLi-a; Wis-cousin."

' Letters PtcntNo. 102,924, dated May 10,1870.

IMPROVEMENT 'IN MACHINES FCR PUNCHING- METAL.

The Schedule referred to in. these Letters Patent makingpart of the same.

To all whom it tmay concern: y

r Be it known that I, ELLIS DO TY, of Janesville, in the coimty of Rock and State of Wisconsin, ,have iu- Improvements in Shear-ing andBunching-Machines3 and I do hereby declare that' the following is a full,.clcar, and exact description thereof, reference being had to-theaccom- Apanying drawings, making. part of this specification,

and to the letters of `reference.marked thereon, like letters indicating likeparts wherever they occur.

'p To enable others skilled in the art to construct and use my invention, Iwill `proceed to describe it.

. My inventionlrelates to machines for shearingor punching metals; and

The invention consistsl l r First, in a -novel device for operating the machine by means of au cogenti-ic; and, r

;Second,1n novel manner of securing the bearings or-bnshing for the sliding part, as hereinafter ex- Figure-4 isa similar view of a combined shearing and punching-machine, showing the operating device applied in a diierent manner. r Y

Figures2 and 3 are 'sectional views of the portion containing the slide exhibiting the manner of' inserting the bearings therefor. l In order to operate the movable blade of a shearing-machine, or the punch `of a punching-machine, I makeuse of'an eccentric secured to a shaft or arbor,

which eccentric has a yoke passing around it, and has a`Tshaped groove in its end,wl`1crerit bears upon the i moving part ofthe blade or punch, as represented in thc drawings. y

`In fig. l, I have represented this device applied to ashearing-machine, of that class which `has its upper or movable blade jC attached toa block, B, which..

slides up and down in a strong box or bearing made on the front part of the tra-me. y In making such machines, the bearing or box for y the reception of the slide B is formed by'casting the frame with a rectangular recess in its side of proper size to` receive the slideI B, and then' bolting a. plate,

;D, onthe front side'of the same.

. In applying my invention to such a machine, I form the top of the slide B with a T-shaped projection or tongue, as sliown at a, fig. 2, and t'the saine into a corresponding groove in the lower straight face of a yoke, A, which yoke I then mount upon an eccentric, E, which latter is secured rigidly upon a shaft, O, as

. represented in figs. 1 and 2.

It will be seen thatbythus connecting thc's'lide or block B and the yoke A, the'latter will be free to move transversely to the former, and that, therefore,

as the shaft() revolves, carrying with it the eccentric E, the yoke, while moving transversely, will canse the block B to move vertically. By this plan I obtain a very compact and powerful machine, and as the yoke A has a bearingou the block across its entire end, it follows that there is' much less wear and tear than where the eccentric is connected to the slide by links and pins, as is usually done. a

It is obvious that this device or arrangement may beI used with equal facility and advantage in those machines, `whether punching or shearing, in which a vibrating arm or lever is used to cnt or punch with, as illustrated in g. 4.

In .this case, the movable blade C is attached to a lever, G, which is pivoted at n, after thev style of ordinary hand-shears.

In such a machine, the eccentric and yoke are secured upon the shaft O at the rear end of the machine, the yoke A being inverted,`and connected with the rear end of the lever G in the samemanner that it was to the' block B in the former case. Y

The shaft O may be operated by a lever, as repre sented in lig, l, for l1and-machines, or it may have a gear-wheel or pulley secured upon it, and befdriveu by any suitable power.

In constructing machines in which the slide B is used, as represented in fig. 1, it has been customary to make the recess for the slide somewhat larger than the slide itself', and then till it up by pouring Babbitt metal in around the slide, to furnish a'bearing surface for the latter.

In shearing machines, wh'erc there is always a strong side pressure, and acorresponding tendency of the moving bladeto slide off to one side, this Babbitt metal is worn away with greatrapidity, thus soon allowing vthe slide to become too'loosc, in which case the machine will not operate well..

. Asjtbis recess or bearing is cast in the solid frame of the machine, and as these flames are of such a'size and shape that they cannot be readily placed or secured o'n a planer to plane out the sides ofthe recess, so as to give the slide a bearing of the frame, and, as previously stated, the Babbitt metal proves not tobe durable, I' remedy thesedifiiculties in th'e following manner:

I make the recess, as before`,`larger l than the slide B. I then provide a series of flat.l strips of steel, or i other suitable metal, dressed off on one face perfectly true and smooth. I then place the slidein its box, fit the strips or plates b of steel next to and close against the -faces of the slide B, as' represented in tig. 3, and

`then fill'the space with Babbitt metal, as represented by c in figs. 2 and 3. ,Y

In this way I secure the steel strips or plates firmly and truly in place, and provide a durable bearing'sur' directly on the iron.l

face for the slide B in n very simple and expeditious manner. Whitt I claim is As represented in iig. 3, the Babbitt metal will fill The combination of the eccentric E and the sliding the space between the edge of the steel strips on the yoke A, constructed and arranged to opera-te substanbroad face of the siide, and thus combine the advanti( ily as described. tages of an anti-friction and. a steel or hard bearingsurface.

Having thus described my invent-ion,

ELLIS DOTY.

This pien of securing hardened bearing-surfaces Witnesses: maybe applied in ali cases, where such are desired, P. J. FRYER, with ease and facility, and when worn the bearings H. A. DOTY.

can be reset with very little trouble or expensen

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