US244720A - Fredrick hildebrandt - Google Patents

Fredrick hildebrandt Download PDF

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US244720A
US244720A US244720DA US244720A US 244720 A US244720 A US 244720A US 244720D A US244720D A US 244720DA US 244720 A US244720 A US 244720A
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hildebrandt
middle
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00Adjustable joints, Joints allowing movement
    • F16L27/08Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
    • F16L27/0849Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid being turned through an angle when passing from one joint element to another
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/32Articulated members
    • Y10T403/32008Plural distinct articulation axes
    • Y10T403/32041Universal

Description

YNTTED STATES PATENT OFFICE.

FREDRICK HILDEBRANDT, 0F NEW YORK, N. Y.

STOVE-PIPE ELBOW.

SPECIFICATION forming part of Letters Patent No. 244,720, dated July 19, 1881.

Application filed October 18,1880. (Nomodel.) l

the four-piece'stove-elbows, by which a neater,l

more durable, and stronger elbow is obtained.

The fourpiece elbows heretofore manufactured were made of two different gradesthe first grade having all the con nectingrivets of the four pieces or sections on the inside, so as to be out ot' sight, while the second or cheaper grade has the rivets on the outside. They are manufactured by cutting two sets of blanks from two sheets of sheet metal and using onelialf of the blanks obtained thereby for one grade and the other halt' for the other grade of elbows. Each middle piece of these elbows was provided at one end with an outwardlybent flange or lipv and at the other end with an annular bead, w hile the end sections had respectively ahead and a lip at their inner edges, which connected with the lip of one of the middle sections and with the bead of the other ln putting the sections to middle section. gether there is always considerable delay in springing the tongues or lips of one section into the connecting-beads of the adjoining section. Another objection was that in closing the beads over the lips by the bead-closin g machine a bad and faulty joint was obtained, which rendered the article unsightly and objectionable.

The object of this invention is to furnish a four or more piece elbow, which is quickly put together and uniformly connected without any tlaw or defect; and the invention consists of providing one middle section of the elbow7 with lips or tongues at both ends, and the second middle section with annular beads at both ends, and making the end sections, as before, with lip and bead respectively.

It consists, secondly, of making the blanks of the outerand middle sections,provided with annular beads at their ends, of slightly greater width than the outer and middle sections having end lips, thelatter sections being riveted closer to decrease slightly their diameter, so that an easier insertion of the pieces or sec- Similar letters of reference indicate corre-V spondin g parts.

In manufactu rin g in y elbows I prefer to make them also in two grades by cutting the blanks,

as heretofore, from two pieces Vof sheet metal, and using one-halt of the blanks so obtained for the first grade, in which the rivets are placed at the inside of the elbow, while the remaining blanks are used for the second grade,

.in which the rivets are arranged at the outside of the elbow. The middle sections of the first grade are preferably slightly bulged at their outer circumference, by which the elbow receives a more rounded and better appearance. The blanks of the first grade are marked in Roman figures I to IV, and the blanks of the second grade in Arabic figures 1 to 4 in Figs. 1- and 2 of the drawings. In making up the blanks care has to be taken that the blanks I and II of the first sheet are made of slightly greater width than' the blanks III and IV of the second sheet, the blankrI being then bead- 'ed at the inner edge, while blank IIis beaded at both ends. The remaining blanks III and IV are bent up with lips or tongues, and are riveted at their edges in such a manner that their diameter is slightly less than the diameter of the sections I and II.

By making one-half the blank-s of slightly greater width than the other halt' and reducing the' diameter of the latter, as described, the sections or pieces are joined without diflculty by simply throwing one into the other, so that no time is lost in springing one section into' the adjoining sections, as has been formerly the case.

By means of the slightly greater width of one-halt' of the blanks there is also secured a better overlapping of the beads over the lips when connecting the sections'in the bead-closing machine. In this manner considerable time and labor are savedin making the elbows.

IOO

Having thus described my invention', I claim as new and desire to secure by Letters Patent- A four or more piece stove-pipe elbow, in which the inner edge of one of the end sec- 5 tions und both edges of one of the middle seetions are provided with annular beads and made of slightly greater width and diameter than the'seeond middle and opposite end seetion, which are provided respectively at both 1o ends and at the inner end with outwardly-bent lips or tongues, all substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two witnesses this 13th day of Octo- 15 ber, 1880.

FREDRIGK HILDEBRANDT. lWitnesses:

PAUL GOEPEL, CARL KARP.

US244720D Fredrick hildebrandt Expired - Lifetime US244720A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5405174A (en) * 1993-03-01 1995-04-11 Lindab Ab Kit and method for producing a connector for fluid pipe elements
US5473815A (en) * 1993-03-01 1995-12-12 Lindab Ab Method for producing a connector for fluid pipe elements
US20040050487A1 (en) * 2002-08-09 2004-03-18 The Boeing Company Thermoplastic laminate duct
US20060214423A1 (en) * 2005-03-24 2006-09-28 Langdon Incorporated Sealing gasket for ventilation duct system
US20130269817A1 (en) * 2012-04-12 2013-10-17 Hitachi, Ltd. Pump suction pipe

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5405174A (en) * 1993-03-01 1995-04-11 Lindab Ab Kit and method for producing a connector for fluid pipe elements
US5473815A (en) * 1993-03-01 1995-12-12 Lindab Ab Method for producing a connector for fluid pipe elements
US20040050487A1 (en) * 2002-08-09 2004-03-18 The Boeing Company Thermoplastic laminate duct
US7097804B2 (en) * 2002-08-09 2006-08-29 The Boeing Company Thermoplastic laminate duct
US20060214423A1 (en) * 2005-03-24 2006-09-28 Langdon Incorporated Sealing gasket for ventilation duct system
US7523964B2 (en) 2005-03-24 2009-04-28 Langdon Incorporated Sealing gasket for ventilation duct system
US20130269817A1 (en) * 2012-04-12 2013-10-17 Hitachi, Ltd. Pump suction pipe
US9334885B2 (en) * 2012-04-12 2016-05-10 Hitachi, Ltd. Pump suction pipe

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