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Our team of experts has extensive experience in the manufacturing of Metal Roll Forming Machines. Heim developed machines and methods, such as those in patents 2,910,765 & 2,913,810, for expanding or contracting metal components that allowed for the manufacture of bearings with perfectly smooth races. But the hammering on the horn of the anvil formed a grain or fiber circumferentially, and this is what the court, in its findings, called the 'important stage' through which the blooms had passed 'in the process of manufacture into steel tires.' Judgment affirmed. It being assumed, as it must be on the findings, that these blooms were adapted and intended for tires for car-wheels, and not for driving-wheels, it is clear, we think, that they were partially manufactured tires of that character, and were not otherwise provided for, and were subject to 45 per cent. As to any facts stated in the stipulation to have been shown by proof at the trial, if they are not contained in the special findings, the only conclusion can be that the court did not find them to be facts. 491, this court declared it to be 'such a movable press-block as is described, having its edge formed to the side of the rail, in combination with such other block as is described, with its edge of similar but reversed form, arranged as described, and combined and operating in the particular way described, for the special purpose of effecting the desired result.' This was enough for that case as it then appeared.

Close to these is a cast or raised block nearly as high as the rail, and with its farther edge also shaped to fit the sides of the rail, when it lies across the anvil in its natural position. In neither is a raised block cast as a part of the anvil. The fixed block in that is not cast quite so high as the rail, and the new piece is welded on and shaped, not on or over either block, but yet above the surface of that part of the anvil that constitutes the block. There is a stationary die, part of a frame against which one side of the rail is placed, to resist the lateral pressure exerted upon it by a sliding lateral die on the other side of the rail, and above is a horizontal bar which is forced downwards by a series of jointed levers, carrying another die upon the upper surface of the rail. The sheet is fed between the two halves of the tool which are then brought together under very high pressure. Thus it is said the fixed block is cast nearly as high as the anvil, with its farther edge shaped to fit the side of the rail, when it lies across the anvil in its natural position.

Rebated doors, a term chiefly used in Britain, are double doors with a lip or overlap (i.e. a rabbet) on the vertical edge(s) where they meet. The other bar of the angle iron, or its other limb, hangs suspended from the upper edge of the fixed block, and is not supported against the blows of the hammer at any other part of its height than the under side of the limb which lies on the block, instead of being supported concurrently at two parts of its height by the grasp of the two blocks, and supported also under its base. We think, therefore, that if the purposes of the two devices be considered, as well as their possible modes of use, the arrangement of their several parts respectively to each other, and the different functions of those parts, it cannot be held that the angle-iron machine contained the invention or involved the principle of the inve tion described in the patent granted to Cawood.

In some particulars there are resemblances between the devices; but there are obvious dissimilarities, not only in the purpose and results sought to be obtained, but in the relation of the parts to each other, in the work to be done by those parts, in the manner and effect of their combination, and in their mode of operation. The mode of use is then described. Not only the object of Cawood's device was novel, but so, also, was the function of the blocks, their combination with each other, and the mode of operation. And the hammering is entirely between the blocks, instead of being partly over or upon them. The rail and the piece of iron to be welded on having been heated, the former is swung from the fire into the space between the blocks, when, by half a turn of the cams, the blocks are closed upon it. The patentee, after stating that the raised block of the anvil is cast 'nearly as high as the rail' (the two blocks thus being made to support the under side of the crown of the rail, and confining the lower half of the crown laterally), says, 'the welded piece is laid on top of the rail in the usual way, and levelled up and shaped by a swedge held by the smith, of the form of that section which projects above the blocks.' Thus the iron is not permitted to spread laterally under the blows of the hammer over the press-blocks and down between them.

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