US917765A - Machinery for upsetting the edges of rolled-metal plates. - Google Patents

Description

' w/ T/VESS E G. J. HOSKINS.

MACHINERY FOE UPSETTING THE EDGES 0P ROLLED METAL PLATES.

APPLIOATIOLI IILED JAN. 29, 1908.

917,765. A Patented Apr. 13, 1909.

2 SHEETS-SHEET 1.

rue NORRIS PETERS ca., WASHINGYON, n. c.

e J. HOSKINS. MACHINERY FOR UPSETTING THE EDGBSOP ROLLED METAL PLATES.

I APPLIOATION FILED JAN. [9,1908. 9 1 7,765 Patented Apr. 13; 1909.

2 $HEETSSHEET 2. .7

T ng UNITED snares PATENT GEORGE JOHN HOSKINS, OF BURWOOD, NEAR SYDNEY, NEW SOUTH WALES, AUSTRALIA.

MACHINERY FOR UPSETTING- THE EDGES 0F RCLLED-METAL PLATES.

Specification of Letters Patent.

Patented April 13, 1909.

Application filed January 29, 1908. Serial No. 413,257.

To all whom it may concern:

Be it known that I, GEORGE JonN Hos- KINS, a subject of the King of Great Britain, residing at St. Cloud, Burwood Road, Burwood, near the city of Sydney, in the county of Cumberland, State of New South )Vales, Commonwealth of Australia, have invented certain new and useful Improvements in Machinery for Upsetting the Edges of Rolled-Metal Plates, of which the following is a specification.

This apparatus has been devised for the purpose of upsetting the edges of rolled metal plates with a view to make such edges of dovetail form, (in section) and the invention is specially applicable to the preparation of the iron or steel plates that are used in the manufacture of wrought iron or steel pipes of the locking-bar type.

The invention comprises three elements, (1) an adjustable clamp and guide for the plates, (2) rotating hammers that strike the two edges of the plate as it is being passed through the machine, and (3) a sizing and polishing a pliance that trims and polishes the dovetai ed edges before the plate leaves the machine. But in order that the invention may be properly understood, reference is made to the accompanying sheets of drawings, in which,

Figure 1 is a plan of the machine, one side being partly in section. Fig. 2 is a side elevation of the same. Fig. 3 is an end elevation of the same, one of the pillars that contains one of the rotating hammers, being partly in section, and the sizing appliance is removed. Fig. 4c is a detail showing, in plan, the adjustable clamp and guide for the plate. Fig. 5 is an end view of the same, the gripping device being omitted, and Fig. 6 is a sectional elevation of the sizing and polishing appliance.

A is the bed plate of the machine from which rise two towers or pillars B, B these towers are adjustable laterally by means of a right and left handed screw C that is worked by a winch handle C operating spur gear C The towers B, B move laterally in guides 7), 6 The clamps and guides D, D are secured to the towers by means of bows d, d and bolts d and therefore when the towers are moved laterally, the clamping devices will move with them. The reason why the towers and clamping devices are susceptible of lateral movement is that the machine may be adapted to different widths of plates.

The side of each tower nearest the longitudinal axis of the machine is cut away, so as to permit of the passage of the plate E, and of the impact of the hammers upon the edges of the plate. The clamping and guiding devices D, D, which are formed of blocks, are secured one on either side of the longitudinal axis of the machine and in front of the cut away parts of the towers. These clamping blocks will rest upon tables b that project from the inner faces of the towers. Each clamping device consists of two clamping blocks, one above the other, between which the plate E will be laid and loosely secured (so that the plate E can freely slide forward) by the set screws d. The edges of each clamping block D, D most adjacent to the rotating hammers, are curved inward in arcs c that are concentric with the aXes of the hammers, and these curves perform a most important function.

In Fig. 4 it will be seen that the corners of the edges of the plate E just project beyond the arcs e of the blocks D, D the dotted circles with the arrows represent the peripheral line and direction of rotation of the hammers; as the hammers strike the corners and the edges of the plate, the edges will be progressively and continuously upset by the impact of the hammers, without the exercise of any great force beyond the force inherent in the velocity of the hammers, and the edges of the plate will be forced back against the faces of the blocks D, D forming an upset of dovetail form. The hammers are secured on vertical shafts F, F axially centered in the towers B, E the vertical shafts are preferably made tapering and the bosses of the hammers are secured thereon by cotters f (see Fig. 3). Each hammer is constructed of a top and bottom plate G, G, of any suit able shape, (but preferably oval) and, centered near the ends of the plates G, G, are heavy rollers g, g, which constitute the striking surfaces of the hammers. There may be one or more of such roller strikers, but two, as shown in the drawings, has been found to give the most satisfactory results. The vertical shafts F, F, are continued above the tops of the towers, are bushed in long bearings H, H and are provided with pulleys J, J to receive the belts j, which connect the machine with any suitably placed power shaft such as K. The plate is pulled through the machine by any suitable appliance. We have found from experience that it is best to haul it through by any suitable hauling gear. To that end the end of the plate I is gripped by a jaw such, that the harder the strain on the hauling rope the tighter the grip. The jaw L is shown in Figs. 1, 2 and 4, and the plate '13 is wedged into it by the wedge Z.

hen the edges of the plate have been upset into the dovetail form, by the combined operation of the clamps D, D and the hammer-strikers g, g, the plate will reach the sizing and finishing appliance shown in Figs. 1 and 6. This device includes upper and lower pairs of rollers M, M respectively, between which the plate E will pass; the function of these rollers is to prevent the plate from buckling when the pressure of the sizing and polishing rollers N, N is felt. The rollers M, M are loose upon their respective shafts m, m so that they serve as antifriction rollers. Intermediate between the shafts m, m are the sizing rollers N, N on vertical axes. The sizing rollers N, N are carried by plungers n, n which are capable of a limited longitudinal lateral movement in the frame, the object of which will be more fully described hereafter. The sizing rollers N, N are made with a central groove of nearly suflicient size to admit the dovetails that have been formed on the edges of the plate. The rollers N, N, are loose on their axes. As the late is hauled along, the top and bottom e ges of the dovetail will be scraped against the top and bottom faces of the grooves in the rollers N, N, and any burs, superficial inequalities or slight differences in the width of the plate at different points will be scraped off. This apparatus is self adjusting. The shafts m, m are connected together at each end by cross-heads O, O and in the center of each cross head is a boss, or stud 0, 0 that projects inward and bears against the external ends of the plungers n, n that carry the rollers N, or N Should one side of the plate be not quite parallel with the other side, the sizing rollers will reduce or eliminate the inequality and this will be rendered possible by the accommodating nature of the structure of the machine. Thus, the top and bottom shafts m, m being braced together by the cross-heads 0, 0 the whole will move in the frame and slide as one, the studs or projections 0, 0 will bear against the ends of the plungers a, n, and the whole will be shifted to one side or the other exactly equally, and this action will continue until the edges of the whole plate have been treated as described.

It may be pointed out that the plates of different thicknesses require a lateral adjustment of the clamping devices D, D To that end the bows, (Z, (Z are provided with adjusting screws I, P whereby the clamping devices I), I) may be moved in or out as desired. The necessity for this adjustment arises from the fact that a thin plate requires more hammering than a thick plate, in order that, relatively, a greater body may be given to the dovetail on thin plates.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is:

I. A machine for upsetting the edges of rolled metal plates comprising a pair of guiding blocks for each edge of a plate, the passes between each pair of blocks being in alinement, each pair of said blocks having a portion of the outer edge recessed and a portion projecting outwardly, a portion connecting the recessed portion with the projecting portion and corresponding in form with the cooperating part of the hammer, and hammers arranged in cooperative relationship with the blocks and in such position that they can operate upon opposite sides of the same portion of a plate.

2. A machine for upsetting the edges of rolled metal plates comprising a pair of guiding blocks for each edge of a plate, the passes between each pair of blocks being in alinement, each pair of said blocks having a portion of the outer edge recessed and a portion projecting outwardly, a curved portion connecting the recessed portion with the projecting portion, and rotating hammers arranged in cooperative relationship with the blocks and in such position that they can operate upon opposite edges of the same portion of the plate, said curved portion of the blocks being concentric with the circular path traveled by the hammers.

3. In a machine of the class described, a pair of guiding blocks for each edge of a plate, the passes of the guide blocks being in alinement, means for adjusting the pairs of blocks toward and from each other, hammers arranged in cooperative relationship with the blocks and in such position that they can operate upon opposite edges of the same portion of a plate, and means for operating the hammers.

4. In a machine of the class described, a pair of towers, means for adjusting said towers toward and from each other, a pair of guiding blocks carried by each tower, the passes between the guiding blocks being in alinement, and rotating hammers carried by each tower and arranged to operate on a work piece as it is passed between the guide blocks.

5. In a machine of the class described, a pair of towers, means for adjusting said towers toward and from each other, a pair of guiding blocks carried by each of said towers, the passes between the blocks being in alinement, means for adjusting the blocks I to the right or to the left, substantially as deon the tower so as to regulate the space between the two pairs of blocks, and hammers carried by the towers and arranged to opcrate on a work piece as it is passed. between the guide blocks.

6. In a machine of the class described, a pair of towers, horizontally rotating ha1n mers in each tower, said towers having recesses in their adjacent faces, a pair of guiding blocks in each recess, the passes between the blocks being in alinement, means for adjusting the distance between the pairs of blocks, and the rear side of each pair of blocks having a curved recess therein concentric with the path of the revolving hammers and in horizontal alinement therewith.

7. In a machine of the class described, a sizing and polishing appliance consisting of two horizontal shafts mounted so as to permit of free longitudinal movement in the line of the axes, antifriction rollers supported on said shafts, the said antifriction rollers receiving the plate between them, cross heads connecting the horizontal shafts together, grooved rollers having the grooves therein on a line with the space between the antifriction rollers, vertical axles for said rooved rollers, horizontally movable members carrying said axles and studs on the cross heads adapted to engage with said movable members whereby the whole structure is moved scribed.

In a machine of the class described, a pair of towers, means for moving said towers toward and from each other, a pair of guiding blocks on each tower having their passes in alinement and adapted to guide a plate horizontally, hammers arranged in the towers adapted to operate on the edges of the plate as it is passed between the guides, a sizing appliance comprising a pair of grooved rollers having vertical axes, the grooves in said rollers being in the same horizontal plane as the passes between the guiding blocks, the grooved portions of said rollers being arranged to operate upon the edges of a plate as the plate leaves the guides, rollers M, M, located above and below the pass between the grooved rollers, horizontal axles for said rollers M, Ed, said axles being slidable in the direction of their axes and means for connecting the axles of the rollers M, M, and the supports for the grooved rollers together so that all of said rollers may be moved laterally together.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

GEGRG-E JOHN HOSKINS. il itnesses MANFIELD NEWTON, VINCENT NEWTON.

Images