US249583A - Die for forming bails - Google Patents

Description

1'.Nltr-,113D STATES PATENT OFFICE.

AHIJAH n.. BYRKETT, oF Tnov, onto.

/ Diel-'OR FORMING BAlLs.

SPECIFICATION forming part of Letters Patent No. 249,583, dated November 15, 1881.

Application iled July 15, 1881. (Np model.)

Y To all whom it may concern i Be it known that I, Amann R. BYRKETT, a

' citizen of the United States of America, residing atTroy, in the county of Miami and State of Ohio, have invented certain new and useful Improvements in Bails for Earth-Scrapers and Dies for Forming the Same; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference y being had to the accompanying drawings, and

to letters or figures of reference marked thereon, which forma part of this specicatiom This invention consists in an improved coustruction of bail for use in earth-Scrapers, and in a die for forming the same, as will be here- I inafter described and claimed.

In the drawings, Figure 1 represents, in perspective, my improved die resting uponan anvil-block. Fig. 2 represents, in perspective, 'my improved bail.

A represents the anvil-block. J is the die, which is secured upon said anvil-block in any desired manner. This dieis of semicircular form, and has formed Aupon its upper face a groove, Z. which extends across the top ot' the die and down each side thereof to the points marked m,"of a uniform width, said width corresponding to the thickness of the bar from which the bail is formed. The bail E is formed out of a hat bar of metal. This bar is heated and placed edge down within that part ot' the groove l in the top of the die. An upper die of semicircular form not shown) attached to a suitable drop-press is then brought down upon the die J,and the ends of the bar forced down over the sides of the die J, a part of each end entering into the outwardly-flaring portion u of the groove l. The downwardly-projectin g ends of the bar below the enlarged groove form the bail-arms, which are attached to the scraper, while those portions within the enlarged parts of the groove form the corners of the bail.. Immediately upon the bar being swaged to a semicircular form, an operator, by means of tongs `or any other suitable device, grasps the ends ot' the bar extending below the bottom of the die, and by giving thema quarter-turn twists that part of the bar within the enlarged groove one-fourth around, and thereby forms the twistupon which great strain is exerted in use, are.

rendered very strong and capable of sustaining a very considerablestrain. Where the corners of the bail are not twisted it is necessary, in order to produce a-bail sufficiently strong to withstand the strain exerted thereupon during the use of the scraper, either to re-enforce the front portion to which thedraft-link is attached or elseincrease thethickness, and consequently increase the weight of the corners. Otherwise the draft upon the bail will result in thepulling apart or fracture of the bail-arms.

By my construction I avoid thickening the bail at any part, and secure the same result as is attained where the corners are thickened, with alighter bail and with the use of less material. l

ln constructing bails'heretofore the custom has been to form them, by forging, of equal thickness throughout at the sides, and re-enforce the central or front portion to which the link is secured. compared with my method of construction, a .costly operation. It is also tedious. Bail-arms forged ot' equal size and weight throughout the length of the arms proper and with the corners of increased thickness are also more expensive than when constructed according to my improvement. g The cost of thelabor alonein forging is about sixty cents, while by forming them within dies,`as above described, the cost of the labor of manufacture would not exceed' tive cents on each bail.

By twisting the bail at the corners r, as seen in the drawings, it will be observed that the narrow edges of the bail-arms are. at the top and bottom, respectively, while the front por- `tion of thebail, to which the Adraft device is attached, has its edges in a horizontal direction. l thus insure. the least possible resist-4 ance of the bail-arms to the earth in draft than when the arms are arranged with their broad sides down, and also the least resistanceA to the draft by arranging the front portion with its ed ges horizontally.

By thus constructing bails I am enabled to produce a bail capable of sustaining anystrain to which it is liable to be subjected in use with This forging of the bail is, as

IOO

:t less expenditure of material and more ehea-p- 2. The die J ,havin g groove l n, substantially ly and rapidly than is possible wherev the hails as and for the purpose set forth.

are forged and 11e-enforced either at the corners In testimony whereof I affix my signature in or front portion, to which the draft mechanism presence of two witnesses.

5 is attaehed.

Having thus described my invention, what AHlJAH R. BYRKETT.

I claim as new therein isv l. A bail i'o'r earth-Scrapers, having twisted Witnesses corners r, substantially as and for the purpose T. B. KYLE,

1o described. CHAS. J. GOOCII.

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