249 F. 729 | 9th Cir. | 1918
On appeal by the Wilson & Willard Manufacturing Company from a decree in favor of the Union Tool Company finding the Double patent No. 734,833, issued in 1903, valid and infringed as to claims 1, 2, 6, 7, and 8. Injunction and accounting were ordered. Wilson v. Union Tool Co. (D. C.) 237 Fed. 837. As will be seen by an examination of Union Tool Company v. E. C. Wilson, 249 Fed. 736, - C. C. A. -, No. 2918, decided this day, the patent has to do with an underreamer for drilling oil wells.
(1) “An underreamer comprising a hollow mandrel furnished with an internal shoulder, a downward extension having opposite parallel bearing faces having a keyway therein, shoulders at the sides of such extension, and upwardly and inwardly sloping dovetail slipways beneath said shoulders; a spring on the shoulder in the hollow mandrel; a rod playing in the mandrel, furnished with a key seat and supported by the spring; dovetail tilt slips playing in the slipways and furnished with key seats, respectively; a key in the key seats of the slips and rod, and playing in the key way of such extension, to hold the slips against the shoulders; said slips being furnished with inward projections to slide upon the downward extension of the mandrel to spread apart the cutting edges of the slips when the slips are drawn up.”
(2) “An underreamer furnished with a mandrel having a downward extension provided with opposite parallel hearing faces and a keyway in the extension; a spring-supported rod furnished with a key seat and playing up and down in the mandrel; tilt slips slidingly connected with the mandrel and furnished with inward projections to slide upon the opposite bearing faces of the downward extension to spread the slips apart at the lower ends when the slips are drawn up; and a key carried by the rod and carrying the slips.”
(6) “In an underreamer, a mandrel furnished with a hollow slotted extension, the lower end of which slopes upward at the edges; tilt slips slidingly connected with the mandrel and furnished on their inner faces with projections, the upper faces of which slope downward to slide upon the extension of the mandrel; and means connecting the slips with the rod.”
(7) “In an underreamer, the combination with a hollow mandrel, provided with a slotted extension, a spring-actuated slip-operating rod provided with*731 a pivot key, tilt slips provided with key seats adapted to- be engaged by said pivot key, said key seats being somewhat larger than the key to allow the slips to tilt, said slips provided with inwardly projecting shoulders, and said .slotted extension provided with surfaces adapted to tilt said slips and hold the same in expanded position.”
(8) “In 'an mulerreamer, the combination of a hollow mandrel with a hollow slotted extension, said extension having opposite parallel bearing faces, a slip-carrying rod in said mandrel, slips connected to said rod, said slips having projections which hear against said extension, said slips being provided with key seats, a key carried by said rod, each end of the key lying in a key seat of a slip, and the key seat in each slij) being somewhat larger than the key to allow the slips to partake of a tilting action.”
The finding' of the District Court was that “the chief novel feature of the Double invention was the tilting means adapted for the collapsion and expansion of the cutters in combination with interrelated dovetails on the cutters and ways of the body extension,” and that there was no anticipation. The errors assigned are based on these several contentions: That the Wilson underreamer does not include the fundamental elements of the Double underreamer, namely, the “hollow slotted extension” with opposite parallel bearing faces with upwardly and inwardly inclined dovetailed ways; that the Double underreamer was but a transitory step in the art; that the Double underreamer was, in effect, abandoned by the predecessors of the appellee because of the success of the Wilson underreamer; that Double, the patentee of the patent in suit, was not the original and Independent inventor of the combination claimed in the patent in suit; that the finding of the court that the essence of the Double invention was the open dovetailed slipways with dfovctail cutters, coacting therewith, and means for expanding the cutters and to catase them to tilt on the suspension means, was error.
In the Double reamer we find the hollow mandrel, the mandrel having a longitudinal hole for the reception of the spring and rod. The hole has a lateral shoulder upon which the spring is seated; the lower end of the mandrel has a downward extension which is hollow or drilled for the reception of the spring-actuated rod and for the reception of the key, upon which slips are hung, and there are opposite parallel bearing faces upon which the inward projections of the slips rest when in reaming position'. The bottom of the downward extension has rounded faces with shoulders. At the side of the downward extension there are dovetails sloping upwardly and inwardly beneath the shoulders and joint member, which subdivides the mandrel and confines the rod and its spring.
In the Wilson underreamer we find a hollow mandrel having a longitudinally drilled hole for the reception of the spring-actuated rod, but there is no internal shoulder upon which the spring seat rests. The spring seats there move upon a removable key or block. Wilson et al. v. Bole & Double et al., 227 Fed. 607, 142 C. C. A. 239. The seating of the spring upon the removable key, instead of upon a fixed shoulder in the mandrel, appears to be novel; but in the Double device the key performs the service of connecting the slips with the spring-actuated rod. In the Wilson mandrel we find the bottom has two prongs, terminating in lugs, which spread the cutters apart into reaming position and hold them so spread, and as described in Union Tool Company v. Wilson, supra, above the lugs there are parallel shoulders in dovetails which form ways for the shoulders on the cutter shanks. The devices operate upon different principles and Under different modes of operation. The mañdrel of the Wilson has no-internal shoulder, no downward extension with its hollow, no slot, no-opposite parallel bearing faces, and no rounded or beveled lower edge; nor has it shoulders at the side of the downward extension, nor dovetails sloping upwardly and inwardly beneath the shoulders, nor what.
This mode of operation is new with Wilson, and is covered by bis patent, No. 827,595. In the Double reamer the slot is not only a key guide, but its lower walls act as a stop for the key, or the downward travel of the rod, key, and cutters. The Wilson device has no such part, with any such functions, in the open spring between the prongs of the body. In the Wilson reamer No. 2, the removable key in the body serves the double function of supporting the spring at its lower end and acting as a stop to arrest the downward travel of the rod by engaging with the upper wall of the elongated slot in the rod. The means used in this rod-affecting function are quite different in the Wilson reamer from those employed in the Double reamer, and we do not understand that the Wilson pronged type of underreamer can be held the equivalent of the hollow slotted extension type of the Double reamer body. It is significant that the slot features of the Double extension, with its two functions, is lacking in the Wilson reamer.
Proceeding, we find that the tilt slips in the Double reamer, connected with the mandrel and with dovetails, play in the slipways on the mandrel, with key seats larger than the keyj with inward projections which slide upon the downward extension of the mandrel, and with the upper faces of these inward projections sloping downward. In the Wilson cutters there are not inward projections which slide upon the downward extensions of the mandrel, nor are there the upper faces of the inward projections sloping downwards. In fact, the Double cutter does not contain shanks; whereas, the Wilson cutter has a cutter head and a long shank. The design of the cutter in the Wilson device, co-operating with the special design of the mandrel, allows the cutter heads to bear solidly against the prongs when in reaming position, but, when collapsed, the cutter head is below the prongs and the shanks are in between the prongs. This interrelationship between the Wilson pronged mandrel and the Wilson cutter with its sliank and head and bearing on the projecting shoulders of this head enables an operation whereby the portion of the mandrel which serves to spread the cutters and hold them apart in reaming position is not between the cutters when the cutters are in collapsed position. The description of such construction is that the cutters can be given a very great strength, inasmuch as no material has to be removed from them to make room for the spreading device when the cutters are collapsed.
In the Double underreamer the rod plays in the mandrel, is supported by a spring, contains a key seat, in which is a key which plays in
It is contended that the tilting action of the Double cutters is not old in the art, in that the Double underreamer shows shoulders removed high up on the slips close to the key, which acts as a fulcrum, and that the location of the shoulders causes the sudden collapse of the cutters. But an examination of the claims of the Double reamer fails to show the inclusion of that feature in the patent; moreover, the quick collapse of the cutters in the Double reamer is due to the fact that they do not collapse during the downward movement, when they are sliding upon the opposite parallel bearing faces of the downward extension, except that slight collapse enabled by the outward travel of the upper ends of the cutters on the key. But, when the inward projections of the slips pass off of these opposite parallel bearing faces, then we have the collapse of the cutters. The record shows that this operation causes what is called “plunging,”'and which is obviated in the Wilson underreamer, because of the fact that the cutters there collapse from the beginning of the downward movement.
In conclusion, we hold that in the device designed by Wilson — the fork or pronged type of underreamer mandrel and the cutters and body with shanks to co-operate with lugs and ways on the mandrel, so as to allow having the spreading prongs or forks between the cutters when in reaming position,, and with the hollow spreading device between them, when in collapsed position, with the cutters collapsed upon these prongs, instead of tilting or spreading — Wilson has invented, and that his device is distinct from the Double invention.
With respect to the contention of the appellee that the Double underreamer -was the first successful device, we need only say that the record contains much evidence to the effect that there were other types of successful underreamers, namely, the Swan, Austrian, Plotts, Kellennan, O’Donnell & Willard, and others. None of them was wholly successful, but they were used until the Double underreamer came in and was more successful than any of its predecessors had been. But the Double underreamer was also not wholly satisfactory, because of the frequent breaks of the cutters, and it dropped behind after Wilson invented.
It must be held that the Double patent should be strictly construed, and the patentee, having limited himself to the elements of his combination, is limited in the construction of his claim to the devices shown. Oriental Tissue Co. v. Louis De Jonge & Co. (D. C.) 235 Fed. 296. The importance of this point is emphasized by the record, which shows that Double canceled his claim No. 8 and substituted claim No. 7, limited his specification, and amended his claims to provide for opposite parallel bearing faces upon his hollow slotted extension. He thus eliminated from his'claim those things which-were excluded by surrender of scope and of definition of his claimed combination. Wright v. Yuengling, 155 U. S. 47, 15 Sup. Ct. 1, 39 L. Ed. 64; Roemer v. Peddie, 132 U. S. 313, 10 Sup. Ct. 98, 33 L. Ed. 382; Greene v. Buckley, 135 Fed. 520, 68 C. C. A. 70.
What is called the Jones round-nosed reamer, which was introduced in evidence as one of the earlier forms of reamer, appears to have had dovetail cutters operating in open dovetail slipways, the cutter extending the periphery of the body to contact with the casing above the spreading bearings and above the fulcrum point; and the evidence shows that Double saw the Jones round-nosed reamer before he made the reamer of the patent in suit. It was also the opinion of the District Court that the tilting action of the cutters, as disclosed in the Brown patent, No. 687,296, was the same as that used by Double, excepting that the cutters were not actuated by the downward motion of the suspension means.
The decree of the District Court must be reversed, and the cause remanded, with directions to dismiss the complaint and to dissolve the injunction.