Home/U.S. Circuit Court for the District of Northern California/Moore v. Schaw

Moore v. Schaw

118 F. 602, 1902 U.S. App. LEXIS 5205
CourtU.S. Circuit Court for the District of Northern California
DecidedAugust 25, 1902
DocketNo. 12,955
StatusPublished
Cited by1 cases

This text of 118 F. 602 (Moore v. Schaw) is published on Counsel Stack Legal Research, covering U.S. Circuit Court for the District of Northern California primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Moore v. Schaw, 118 F. 602, 1902 U.S. App. LEXIS 5205 (circtndca 1902).

Opinion

MORROW, Circuit Judge.

In this suit the complainant seeks to enjoin the defendants from making, using, or selling a holding device for riveters embracing the invention described in letters patent of the United States No. 622,251, granted to the complainant on April 4, 1899. The defendants are charged with infringing the rights of the [603]*603complainant accruing under said letters patent,- to the complainant’s damage. The defendants deny generally the charges of the bill of complaint, and as matter of defense aver that the complainant’s patent is void for want of invention and by reason of anticipation, and that they have not infringed.

From the specifications of complainant’s patent it appears that the device in question is intended for use in connection with the riveting of circumferential seams of pipe sections, tubes, or cylinders generally, and designed more especially for use in “line-pipe riveting,”—riveting the pipe when the pipe is in the ditch. The inventor says in the specification :

“Heretofore the riveting or joining together of pipe sections has been accomplished either by hand or by the use of heavy and complicated power devices, which head or upset the rivets by pressure exerted thereon. The objection to the former method of riveting is that the work is necessarily slow, and the rivets are not uniformly driven; and, again, it requires the employment of expert riveters, while by the use of the power mechanism the pressure upon the inner wall of the pipe is so great that unless heavy and strong external devices be employed to compensate for such pressure the pipe is liable to be damaged by the undue strain to which it is subjected. The main object of my invention is to provide a simple, comparatively light, and inexpensive holding device by means of which the pneumatic or other tool may be employed for the driving, heading, or upsetting of the hot or cold rivets during the riveting of the pipe sections; the device being so constructed that it may be easily and quickly moved along the line of piping, or from one section to another, and adjusted to the rivet holes of the sections in order that the riveter may be brought into alignment therewith, and be permitted free movement the entire circumference of the pipe sections. The holding device comprises an annular frame adapted to embrace the entire circumference or a part diameter of the pipe section,' combined with a tool-holder either movable upon the frame, so as to traverse the circumference of the pipe, or it may be rigid therewith, and the frame movably secured around the pipe section. Hence, broadly stated, the invention may be said to comprise an ‘annular frame’ (by which expression I wish to be understood as meaning a frame embracing the entire circumference of the pipe section) either rigidly or movably connected or supported transversely to the length of the pipe line, in connection with a tool-holder mounted upon and carried by the frame. By the use of the present holding device X am not only enabled to reduce the cost incident to the riveting of pipe sections by dispensing with the necessity as to the employment of skilled or expert riveters, but all the riveting required to properly join or unite the pipe sections may be quickly performed while the pipe is in position within the trench, and the rivets driven at the rate of about fifteen hundred or more per day, and more perfectly than they can be driven by hand, as is usual in this class of work. As the rivets may be driven at any distance from the end of the pipe, it allows all the pipe sections to be assembled and temporarily joined in the ditch or trench, and each section permanently riveted as the work progresses.”

The device is particularly described in the following specification, with references to the drawings accompanying;

“The holding device comprises a frame preferably consisting of two plates or rings, BB*, Mgs. 1 and 2, which are composed of distinct sections joined together by bolts, a. These plates or rings are designed to loosely embrace or encompass the pipe sections, one resting upon each section of the pipe a short distance from the other.
“The ring sections of the annular frame that encircle the pipe sections when in place are fastened or held together by means of the lock or cross bars, B2, which bars are connected by hinged joint, ai, to one ring of the frame, and secured to the other when thrown over by means of the clips, a2, hinged to said ring, which clips fit over the free end of the cross-bars, B2, Mg. 2. Each bar is formed with a depending lug, b, which engages the [604]*604inner face of one of the rings of the annular frame, so as to hold the frame rings a given distance apart.
“Inasmuch as the end of one pipe section fits within that of the other section an even or unbroken surface is impossible. Consequently it is required that means be provided to adjust one frame section to the other, so as to secure horizontal alignment and to hold the rings against displacement after being properly aligned to each other and to the circumferential rivet holes of the pipe sections. To accomplish this, each section of the frame is formed with a downwardly extending bracket or support, 1, through which works a screw-threaded bolt, 2, carrying at its lower end a foot, 3. This foot rests upon the pipe section of the respective rings, and either ring is raised or lowered by simply turning the hand-wheel, 4, so as to move the screw-rod inward or outward. This form of adjusting mechanism is preferred where the frame is a rigid one, owing to its simplicity, although any other ■suitable adjusting device may be'employed for this purpose.
“By preference the annular frame is formed of channel iron, and between the rings composing the frame is fitted to move the slide tool-holding block, C, which block is formed with the side grooves, hi, so the edges thereof embrace the upper and lower faces of the rings, B Bi, Figs. 2, 3, and 9. This slide-block is provided with a vertical central opening, b3, within which is fitted the cylinder, Ch, carrying the pneumatic hammer or riveter. C2, which: when the annular frame is properly adjusted upon the pipe sections is in line with or centered to the rivet holes of the pipe. In order to permit free circumferential movement of the slide holding-block carrying the riveter, the-same is connected by tie-rods, D Di, to the sleeves, d d*. which sleeves in turn are connected to the sleeve, d2, by tie-rods, D2 D3. Through sleeve, d, is fitted axle, e, carrying rolls, e*, and within sleeve, d1, works axle, e2, carrying rolls, es, while through sleeve, d2, works axle, f, carrying the larger rolls, E. Each of the rollers, ei, e3, and E. works upon the periphery of the rings composing the annular frame, and while answering to hold the sliding tool-holding block in position also assists in moving the same around the frame. Owing to the weight of the riveter, it is necessary that a counterpoise or counterweight be employed to assist the operator in holding the slide-block and riveter in proper position. This is accomplished by making the rolls, E, of such size that the weight thereof will approximately equalize that of the slide-block and riveting-tool combined. Hence only slight pressure is necessary to enable the operator to move the slide-block the entire circumference of the pipe sections, as required, to head or upset the rivets in order to rivet-joint the pipe sections.

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Bluebook (online)
118 F. 602, 1902 U.S. App. LEXIS 5205, Counsel Stack Legal Research, https://law.counselstack.com/opinion/moore-v-schaw-circtndca-1902.