US897256A - Machine for edging metal plates. - Google Patents

Description

06. z f' MA No. 897,256. PATENTED AUG. 25, 1908.

J. FRASER & T. GRAY.

MACHINE FOR EDGING METAL PLATES.

APPLICATION FILED FEB. 26, 1908 4 S ETS SHEET 1 WITNESSES: I INVENTORS By filrma A TTORNEYS No. 897,256. PATENTED AUG. 25, 1908. J. FRASER & T. GRAY MAGHINE FOR EDGING METAL PLATES.

APPLICATION FILED FEB. 25, 1908.

4 SHEETS-3H3ET 2.

INVENTORS IV/TNLSSES: Z 2

A TTORNE Y5 No. 897,256. PATENTED AUG. 25, 1908. J. FRASER & T. GRAY. MACHINE FOR EDGING METAL PLATES.

APPLICATION FILED FEB.25, 1908.

4 SHEETSSHEET 3.

4 SHEETS-SHEET 4.

PATENTED AUG. 25, 1908.

J. FRASER & T. GRAY. MACHINE FOR EDGING METAL PLATES.

APPLIOATION FILED 11113.25, 1908.

INVENTORS *HTMNM I TTUAAI )5 JOHN FRASER AND THOMAS GRAY, OF PATERSON, NEW JERSEY.

MACHINE FOR EDGING METAL PLATES.

Specification of Letters Patent.

Patented Aug. 25, 1908.

Application filed February 25, 1908. Serial No. 417,720.

To all NF/ION) it me 1/ concern:

Be it known that we, Jo'nN FnAsEn, a citizen of the United States of America, and 'luonAs GRAY, a subject of the King of Great Britain and lreland, both residents of Paterson, in the. county of l. assaic, in the State of New Jersey, have invented certain new and useful lmprovements in Machines for Edging Metal Plates, of which the following is a s 'iecilicatimi.

This invention relates to a machine more particularly intended for use in the manufacture of metal pipes with rivetless longitudinal joints from metal plates, and the invention consists in an improved construction of machine for the upsetting and planing of the longitudinal edges of the plates by means of which the rivetless joints are produced.

in the accompan. \'ing drawings in which is shown a machine embodying our invention, F igure 1 is a plan view of the main part of the machine; Fig. 2 is a cross section on the line 22, Fig. l, but drawn to a larger scale; Fig. 3 is a similar view with the tool holders adjusted to a narrower width of plate; Fig. 4 is a section on the line. l4, Fig. 1, on the same scale as Fig. 3; Fig. 5 is a cross section on the line 5 5, Fig. 1, drawn to the same scale as Fig. l Fig. 6 is an end view of the machine; Fig. 7 is a longitudinal section of the traveling work carriage. only; Fig. 8 is an outside elevation of the main part of the bed plate; Fig. 9 is a similar inside elevation of the same; and Fig. 10 is a vertical section of one of the hydraulic cylinders for raising and lowering the work clamps.

In machines heretofore used for the purpose. of upsetting and planing the edges of metal plates for the use abole mentioned, it has been customary to mount the plate upon a stationary work bed and operate upon the same by means of a traveling tool carriage. It has been found impractical to construct and operate. a machine of that character to work on both edges of such plates beyond a very limited width. Moreover, even on. plates of moderate width the upsetting niachines with traveling tool carriages have involved the use of side bearings and side strain, the use of a very long feed screw shaft specially supported but very liable to get out of order, with excessive and uneven Wear on the bearingfaces and the production of plates with uneven edges and consequent loss of product.

The work to be done by these machines is widths of plates to be operated on.

very hcavy'and destructive and. one of the first essentials is great strength of the machine. lhis primary requirement has been secured in our machine and the dillicultics above mentioned overcome by the construction which we will now describe.

Vile provide a stationary bed a and tool carriers b, and combine therewith a longitudinally traveling work carriage c. This construction permits us to materially lighten the weight of the bed a, which acts solely as a support for the work carriage and the tool standards, while the whole strain of the upsetting operation is borne by the tie bolts d and d, which unite .the opposite tool-carrying frames 1) both. above and. below the work carriage. The tool carrying frames comprise essentially standards provided with slides e'resting on transverse slidewaysf on the side frames of bed a and carrying suitable cutting or planing tools 9 and upsetting rollers 71, the former to trim the plate to the desired width and the latter to upset the edges of the plate to the desired amount, while limit rolls 1' are set to the required thickness of the upset.

The adjustment of the tool holders to the width of the plate is secured by adjusting the nuts cl on the threaded ends of the tie rods (1, which pass through sockets on the frames 1). After the adjustment has been made the tool holders are secured to the bed plate by bolts k passing through suitable holes in the flanges on the two standards and side frames of the bed.

The traveling work carriage is built up of a series of longitudinal girders (four shown) a, a, and transverse beams p with an intermediate plate or plates 0, all secured together, and to the outer ends of the transverse beams are secured on the underside longitudinal bearing plates 1) to travel on corresponding longitudinal bearing faces (1. on the side frames of the bed a. To the underside of the two central girders a, n, is secured a rack 25, into which gears a pinion u on a shaft 2 (Figs. 2 to 6), driven from any suitable source of power ,P, Fig. 6. Upon the surface of the table are secured longitudinal stringers q, (1, the two outer ones being laterally adjustable, as indicated in Figs. 2 and 3, for different The plate to be operated on is laid upon these stringersq, q and is clamped thereon by the clamping frame. This clamping frame cornprises longitudinal girders 1", 1", the two contral girders 7', 1', being united by up er or lower plates 1' (Figs. 2 and 3), while t e two outer girders r one laterally adjustable towards or from the central ones, according as the stringers g are adjusted inwardly or outwardly. As best seen in Figs. 5, 6 and 7, thegirders 1', 1' are connected together at their ends by cross beams w, w, which in turn 'are supported on vertical plungers 12 worka ing inhydraulic cylinders 13 secured to the opposite ends of the work table. We prefer to make the cylinders 13 duplex, with plungers at opposite ends, and the two-chambers not in communication with each other, as shown in Fig. 10. The lower plungers 14 (Figs; 6 and 7) bear upon yokes or stirrups 15 extending up over the cross beams w, w; We prefer to em loy two pairs of plungers at each end of t e table. By letting the fluid out of the lower and larger cylinders and into the upper cylinders the plungers 12 will be raised to elevate the clam ing frame for the. withdrawal of a finished p ate and the inser tion of a new plate on the table. By letting the fluid out of the upper cylinders and into the lower ones, the clamping frame will be rouglit down tight onto the plate on the work table to hold it fiat while being operated on by the laning tools and upsetting and finishing rolls.

As will be seen on reference to Figs. 2 and 3, a characteristic feature of our machine is that the inner faces of the tool-carrying standards I), b, are out under immediatel below their tool-carrying parts I), so that the latter may overhang or project over the edges of the table, when the standards I) have to be adjusted towards each other to work on the narrower widths of plates.

It will be seen that owing to the tying together of the tool-carrying standards above and below the work table, no side bearings are required to take up side thrust and give trouble from wear. And only the tool-carrying standard parts need to be made mas-- sive and of great stren th, the extended ends of the bed being mere y re uired to support the weight of the work an its carriage and being free from other strain.

We do not claim in this case the overhang feature of construction of the toolcarrying standards, as that forms a subject of another application for patent filed by us July 22nd, 1908, Serial No. 444,858.

We clalm as our invention:

1. A machine for edgin plates, having a stationary bed, and a trave f g work carriage mounted thereon, in combination with toolcarrying standards on opposite sides of the bed and sets of means separate from the bed for tying together the said standards both below and above the work table.

stationary bed, and a trave 'ng work carnage mounted thereon, in combination with laterally adjustable tool-carrying standards 'on opposite sides of the bed and means for tyin together the said standards both below an above the work table.

3. A machine for edging plates, having a stationary bed and a trave ing work carriage mounted thereon, in combination with standards on opposite sides of the bed-carrying tools to operate on opposite edges of the plate and tie rods conneotin the two standargis together both-below and above the work ta e.

4. A machine of the character described, having a stationary bed, a movable work carriage mounted thereon, and means for securing the work thereto, in combination with laterally adjustable tool-carrying standards mounted on said bed on opposite sides of said erate simultaneously on opposite edges of t e work and means for tying together the said standards both below and above the work table.

5. A machine for edgin plates, having a stationary bed and a trave 'ng work carriage mounted thereon, in combination with standards carrying tools on opposite sides of the bed to operate on opposite edges of the plate,

el1ng work carriage, in combination with carriage, and carrying a series of tools to o tool-carryjng standards, tie rods adjustably connecting the standards together both above and'below the work table, means for securing the standards to the bed in the positions to which they are adjusted and clamping-means for the plate extending substantia y the length of the carriage, the parts of said clamping means which are located nearest the standards being also laterally adjustable.

In testimony whereof we have signed our names to this specification, inthe. presence of two subscribing witnesses. I

' JOHN FRASER. THOMAS GRAY. Witnesses:

WILLIAM ABBE, HUBERT Howsou.

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