Hydraulic Press Mfg. Co. v. Ralph N. Brodie Co.

51 F. Supp. 202, 59 U.S.P.Q. (BNA) 268, 1943 U.S. Dist. LEXIS 2364
CourtDistrict Court, N.D. California
DecidedJuly 27, 1943
DocketNo. 22086-G
StatusPublished
Cited by2 cases

This text of 51 F. Supp. 202 (Hydraulic Press Mfg. Co. v. Ralph N. Brodie Co.) is published on Counsel Stack Legal Research, covering District Court, N.D. California primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Hydraulic Press Mfg. Co. v. Ralph N. Brodie Co., 51 F. Supp. 202, 59 U.S.P.Q. (BNA) 268, 1943 U.S. Dist. LEXIS 2364 (N.D. Cal. 1943).

Opinion

GOODMAN, District Judge.

This is a suit wherein The Hydraulic Press Manufacturing Company, an Ohio corporation, charges the infringement of certain United States Letters Patents relating to an hydraulic metal drawing press.

The complaint named The Ralph N. Brodie Company, a California corporation, and Baldwin-Southwark Division of the Baldwin Locomotive Works, a Pennsylvania corporation, along with fictitious parties, as defendants. Service of process upon the defendant Baldwin-Southwark Division of the Baldwin Locomotive Works was quashed for lack of venue and the action' dismissed as to it. Defendant The Ralph N. Brodie Company, a California corporation, and The Pelton Water Wheel Company, a California corporation, wholly-owned subsidiary of Baldwin Locomotive Works, by separate answers, denied infringement and alleged the invalidity of plaintiff’s patents.

[203]*203The complaint set forth that plaintiff was the owner of the following numbered patents, assigned to it by Walter Ernst, alleged inventor, and Director of Engineering of plaintiff corporation: No. 2,067,265, No. 2,136,240 and No. 2,167,941.

At the trial all claims against defendants arising under patent No. 2,167,941, no evidence having been introduced relating thereto, were abandoned, and therefore plaintiff is entitled to and may have no relief against defendants for any claim or claims arising under said numbered patent.

Defendant The Ralph N. Brodie Company manufactures and sells fluid meters and purchased the accused device or press within six years prior to the commencement of the action from The Pelton Water Wheel Company, which, in turn, purchased the same from the Baldwin-Southwark Division of the Baldwin Locomotive Works; thereafter it (Brodie Company) used the device in stamping out the products which it sold in the course of its business. Plaintiff is a large manufacturer of hydraulic blank-holding or hold-down presses. The evidence showed that during the last five years, plaintiff sold presses embodying' the claims of the two patents in suit, of a sales value of approximately $1,200,000, among them being presses especially manufactured for and sold to large airplane manufacturing and automobile manufacturing plants.

Plaintiff contends that machines embodying the claims of the patents produce or draw forms of'varying designs suitable for many diversified needs of manufacturers with an efficiency, smoothness and rapidity unknown to the presses preceding them.

In patent ' No. 2,067,265, the inventor states the objects of his invention as follows :

“One object of my invention is to provide a hydraulic double-acting press having a drawing piston and a clamping piston arranged to move substantially simultaneously into position during the working stroke, until the blank is clamped whereupon the drawing piston continues the work of forming the article.” (Pltf. Ex. 4, p. 1, 11.6-12, left hand column.)
“Another object is to provide hydraulic double-acting metal-drawing press of the above described type, wherein the clamping devices are provided with means for adjusting the clamping pressure so as to exert a predetermined force upon the blank during the drawing operation.” (Pltf. Ex. 4, p. 1, 11.7-12, right hand column.)
“Another object is to provide a hydraulic acting metal-drawing press having a main drawing piston and platen arranged to engage a clamping piston in such a manner that the clamping piston tends to push against the platen during the working stroke and be pulled away from the work piece by the platen during the return stroke.” (Pltf. Ex. 4, p. 1, 11.22-29, right hand column.)

Of the fifteen claims set forth in this patent, claims 7, 9, 10, 11, 14 and 15 only were relied upon. It is claimed that this patent is a combination patent, i. e. a. combination of different elements to accomplish the desired result by co-operation of such elements.

From Claim No. 7, this combination in a hydraulic press may be briefly described as—

1 a double acting pressing plunger

2 a platen connected thereto

3 a clamping plunger

4 a clamping member operated thereby

5 the platen and member operated thereby being adapted to engage one another

6 means for restricting the discharge of pressure fluid from around one of said plungers

7 the purpose of the foregoing combination of elements being to maintain the platen and clamping member in engagement with one another during the nlotion thereof.

It would unduly prolong this opinion to set forth, even iri brief break-down, claims 9, 10, 11, 14 and 15. Suffice it to say that additional element's in combination are set •forth, alleged to provide the means for the effectuation of the objects of the invention.

In patent No. 2,136,240, the inventor states the following to be the objects thereof:

“One object of this invention is to provide a triple-action drawing press having clamping and drawing devices, together with a movable support for the article being drawn, this support being arranged to provide a movable rest for the drawing device so as to prevent the latter from pushing its way through the article during the drawing operation.”
“Another object is to provide a triple-action drawing press having a hydraulic main cylinder and ram for operating á drawing plunger, hydraulic clamping cylin[204]*204ders and rams for operating the clamping member and a hydraulic supporting plunger for supporting a portion of the article being drawn during the drawing operation, the clamping plunger being hydraulically connected to the push-back side of the press so as to be operated by the fluid expelled therefrom during the advance of the main plunger, the clamping plungers preferably having a pressure relief valve associated therewith for releasing the clamping pressure when a predetermined pressure is being exerted.”

Claims 7, 8, 9 and 10 only are here asserted.

The break-down of claim 8 shows the following elements in combination:

(1) a pressing plunger,

(2) a platen operated thereby,

(3) a clamping cylinder in said platen,

(4) a clamping plunger in said cylinder,

(5) means for supplying fluid to said clamping cylinder,

(6) means responsive to the pressure built up in the clamping cylinder by the motion of said clamping cylinder relatively to said clamping plunger for cutting off said fluid-supplying means from said clamping cylinder whereby the fluid is entrapped and pressure developed by the motion of said platen relatively to said clamping plunger and caused to operate said clamping plunger to clamp the workpiece.

(7) and a pressure release device for releasing fluid from said clamping cylinder in response to the attainment of a predetermined pressure.

A like comment may be made as to the other claims of this patent, to that made with respect to the claims of patent No. 2,067,265. Applications for both patents were co-pending in the patent office, and defendants have not pleaded the first patent as an anticipation or disclosure of the second.

In the seventeenth century, Blaise Pascal discovered the principle, now known as Pascal’s law, that fluids transmit pressure equally in all directions.

Free access — add to your briefcase to read the full text and ask questions with AI

Related

Ralph N. Brodie Co. v. Hydraulic Press Mfg. Co.
151 F.2d 91 (Ninth Circuit, 1945)
Vegetable Oil Products Co. v. Dorward & Sons Co.
53 F. Supp. 281 (N.D. California, 1943)

Cite This Page — Counsel Stack

Bluebook (online)
51 F. Supp. 202, 59 U.S.P.Q. (BNA) 268, 1943 U.S. Dist. LEXIS 2364, Counsel Stack Legal Research, https://law.counselstack.com/opinion/hydraulic-press-mfg-co-v-ralph-n-brodie-co-cand-1943.