US533977A

US533977A - Machine for milling or corrugating sheet metal

Info

Publication number: US533977A
Authority: US
Publication date: 1895-02-12
Anticipated expiration: 1912-02-12

Description

2 Sheets-Sheet 1.

(No Model.)

W. WESTLAKB. MAGEINE EOE MILLING 0E GOEEUGATING SHEET METAL.

eb. I2, 1895.

.- WITNESSES:I

ATTRNEY (No Model.) 2 Shets-Sheet '2.

W. WESTLAKE. MACHINE FOR MILLING 0B. GOERUGATING SHEET METAL.

No. 533,977. Patented I'eb.'12,1895.

WITN ESSES UNITED vSTATESA` PATENT OFFICE.`

WILLIAM wEsTLAKE, on BROOKLYN, NEW YORK.

MAcl-HNE FOR MlLLlNG OR'OORRUGATmG SHEET METAL.

SPECIFICATION forming part of Letters Patent-No. 533,977, dated February 12, 1895.

Y Application led September 8,1394. Serial No. 522,419. (No model.)

To ZwwI/n, it may concern:

13e it lknown that I, WILLIAM WESTLAKE, a cltizenof the United States, residing at Brooklyn, Kings county, New York, have invented certain new and useful Improvements in Ma-l chines for Milling or Corrugating Sheet Metal, of which the following is a specification.

This invention relates to the class of maohines which employ milling wheels or knurls for forming corrugations in sheet metal, and the object of the invention is to provide a simple machine adapted for milling Or corrugatlng the turned-up .marginal iiange on a sheet of metal to be employed for a stoveboard, or for other purposes. The invention will be fully described here- Inafter and its novel features carefully defined in the olaims. Y

In the accompanying drawings which illustrate an embodiment of the invention-Figure 1 is a side elevationof the machine. Figs. 2 and 3 are horizontal sections, taken respectively, on the lines x2 and m3 in Fig. 1. Fig. 4 is a plan view of the front end of the sheetsupporting table, showing the milling .wheels In plan. Fig.5 is a fragmentary plan view of the milling wheels, on a large scale, and Fig. 6 is a section of Iche same on line 006 in Fig. 5. Fig. 7 is a fragmentary view of a is an end view of the machine.

1 is the frameof the machine which may be constructed of metal or wood,or of both, in any form best suited to the purpose. In the upright portion 1X of the frame is rotatively mounted a driving shaft 2 carrying tight and loose belt-pulleys 3 and a bevel-wheel 4. The shaft 2 may bedriven in anyl convenient manner from any source of power. Mounted in brackets 5 and Gon the upright part kof the frame, is a shaft 7 on which is fixed a bevel-gear wheel 8 which gears with the wheel 4 on the driving shaft. On the lower end of shaft 7 is secured one wheel, 9, of a pair of milling wheels, the other wheel, 9X, of the pair being secured on the lower end of ashaft 7X. This shaft 7K is mounted in two bearing-

blocks

10 and 11. (See Figs. 2 and 3.) The upper block 10 is mounted pivotally in the upper bracket 5 on screws or pins 12, and is connected to the block 11 by a bar 13. The block llis mounted in a slot in the lower bracket 6 and has some play therein to allow the milling wheel 9X to be moved into and out of gear f with the wheel 9. Normally, themilling wheels are held apart, or out of engagement by some means, andpreferably, bya spring. This may be a coil spring 14 arranged between the block 11 and the frame. In order to press the milling wheel 9x forcibly into gear with 6o rthe wheel 9 when a sheet of metal is interposed between t'he wheels, a screwl is employed, arranged as shown in' Figs. 1 and 3. This screw is driven through the upright part of the frame and bears on the block 1l. The 65 .shaft 7 drives the shaft 7K through the medium of gear-wheels 7 a on the respective shafts.

On the frame 1 is mounted a sheet-supporting table 16 which will be hinged, for convenience, to the frame at 16x. This table, as here 7o shown,'extends from the hinging point 16x forward to about the point where the pitch circles of the respective milling wheels meet, as seen in'Fig. 4, and will be provided at its front'edge with a stop or gui'de 17 for the 75 sheet of metal. Preferably, there will be two stops, one at each side of the milling wheels.

, Means are employed for raising the front end of the table 16 and kany suitable known means may be used for the purpose. The de- 8o vice herein shown comprises (see Fig. 8) a bridle, 18, secured to lugs, 19, on the table and connected at their upper ends to a cord or chain, 18x, which passes over pulleys, 19x, on

a beam above and is provided with a Weight 8 5 20. The table is drawn down by a treadle, 20x, and cord, 20a.

In operating the machine, the screw 15 is run back so as to permit the spring 14 to separate the milling wheels and the table is 9o drawn down. A flanged sheet or shell7 of metal X A(seen in Fig. 7) is placed on the table with the flange y thereon against the guide or guides 17 and projecting upward. The weight 20 is now permitted to draw up the 95 table, the flange on the sheet .passing up between the milling wheels. The'screw 15 is now'driven in until the teeth on the milling wheels clamp and indent the upright flange y when the milling wheels will feed the sheet along and mill or corrugate the flange.

It will be understood that the milling wheels will have teeth of the size and form to proof the form shown in Fig. 5.

When the upright marginal flange about the sheet shall have been milled the machine on the sheet and the machine is set in motion, Ico

duce the milling required and not necessarily io 5 will be stopped, the milling wheels opened, the table drawn down and the sheet removed.

This machineis designed for milling flanged sheets in general, but particularly for milling rectangular sheets with rounded corners with the stops 17 placed as represented in Fig. 4.. If circular sheets are to be milled. the table 16 will be provided with an adjustable and removable pin, 17a, mounted on the table and adapted to pass through a central hole in the sheet. Such a pin is shown in Fig. 1.

The milling wheels may be wide enough on Vtheir faces to take in and mill the entire width of the flange on the sheet or only a part of the width thereof. Fig. 7 shows a shell for a stove-board; that is, a sheet with a box flange turned on its edge, the free portion yx, of which is turned inward nearly at a right angle to the upright part. This view shows the milling at Fig. showsa hanged plate in the grasp of the wheels 9 and 9X, and being milled. I prefer to provide the wheel 0x with a flange, 9, to take under the sheet being operated on. This flange is best seen in Fig. G.

As represented in the drawings, the shafts of the milling wheels are vertical and the table horizontal, and this arrangement is the preferred arrangement, but I do not Wish to limit myself in this respect.

The usual devices for stopping and starting the machine may be employed. As these devices will vary according to the mechanism employed. for driving the shaft 2, I have not shown any for the purpose.

Having thus described my invention, I claim- 1. In a machine for milling the tnrned-up llange on a sheet of metal, the combination with a pair of milling wheels, one of which is adapted to be moved into and out of gear with the other` and mechanism for driving said wheels, of a sheet-supporting table adapted to be moved toward and from the milling wheels for inserting and removing the flange to be milled, and means for operating said table, substantially as set forth.

2. In a machine for milling the turned-up fiange on a sheet of metal, the combination with the frame, of a shaft 7 mounted rotatively in brackets thereon, mechanism for driving said shaft, the shaft 7x mounted rotatively in blocks 10` and 11, the block 10 pivotally mounted in the upper bracket on the frame, the block 11 mounted and guided in the lower bracket on the frame, the bar connecting said blocks, the milling wheels and gears 7 on the respective shafts 7 and 7X, means for holding said milling wheels normally out of gear, means for putting said wheels forcibly into gear, and a sheet-supporting table, adapted to be moved in a direction substantially at right angles to the plane of its face, substantially as set forth.

3. In a machine for milling the turned-up fiange on a sheet of metal, the combination with the frame, of a shaft 7 mounted rotatively in brackets thereon, mechanism for driving said shaft, the shaft 7L mounted rotatively in

blocks

10 and 11, the block 10 pivotally mounted in the upper bracket on the frame, the block 11 mounted and guided in the lower bracket on the frame, the bar conneeting said blocks, the milling wheels and gears 7 l on the respective shafts 7 and 7X, the spring 14, for separating the milling Wheels, the screw 15 in the frame and bearing on the block l1 for forcing themilling wheels into gear, and a sheet-supporting table, adapted to be moved in a direction substantially at right angles to the plane of its face, substantially as set forth.

4. In amachine for milling the turned-np flange on a sheet of metal, the combination with a pair of 'milling wheels, one of which is adapted 4to be moved into and out of gear with the other, and mechanism for driving said milling wheels,ot`the table 16 hinged at one end and provided at its other free end adjacent to the milling wheels, with astop or stops 17 and means for elevating the free end of said table, substantially as set forth.

5. In a machine for milling the turned-up flange on a sheet of metal, the combination with a pair of upright shafts, milling wheels mounted on the lower extremities of the said shafts, means for driving said shafts, and means for moving one of the milling Wheels into and out of gear with the other, of a sheetsupporting table 1G, having its free, front edge arranged under the said milling wheels, and a stop 17 on the front edge of said table, the stop co-inciding substantially, with the point where the pitch circles of the milling wheels come together, substantially as set forth.

6. In a machine for milling the turned up flange on a sheet of metal, the combination with a pair of milling wheels, one of which is provided with a marginal flange to take under the sheet, and means for moving one of said Wheels into and ont of gear with the other, of mechanism for driving said Wheels, and a movable supporting table for the sheet, substantially as set forth.

7. In a machine for milling the turned up flange on a sheet of metal, the combination with a pair of milling Wheels, one of which is adapted to move into and out of gear with the other, and mechanism for driving said milling Wheels, of a sheet-supporting table adapted to be moved toward and from the said wheels in a direction substantially at right angles to the plane of its face, and a stop or stops on the said table-to properly guide the sheet during the milling operation, substantially as set forth.

In witness whereof I'havehercunto signed my name in the presence of two subscribing witnesses.

WILLIAM W'ES'FLAKE.

Witnesses:

HENRY CONNETT. J. D. CAPLINGIR.

IOC

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