US3767504A - Method of reinforcing a plastic bar - Google Patents

Method of reinforcing a plastic bar Download PDF

Info

Publication number
US3767504A
US3767504A US00182486A US3767504DA US3767504A US 3767504 A US3767504 A US 3767504A US 00182486 A US00182486 A US 00182486A US 3767504D A US3767504D A US 3767504DA US 3767504 A US3767504 A US 3767504A
Authority
US
United States
Prior art keywords
plastic
strip
metal reinforcing
bar
reinforcing member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00182486A
Inventor
A Singleton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SINGLETON RAYMUND
Original Assignee
A Singleton
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by A Singleton filed Critical A Singleton
Application granted granted Critical
Publication of US3767504A publication Critical patent/US3767504A/en
Assigned to SINGLETON, RAYMUND reassignment SINGLETON, RAYMUND ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SINGLETON, ALBERT
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/16—Apparatus for electrolytic coating of small objects in bulk
    • C25D17/18—Apparatus for electrolytic coating of small objects in bulk having closed containers
    • C25D17/20—Horizontal barrels
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1082—Partial cutting bonded sandwich [e.g., grooving or incising]

Definitions

  • ABSTRACT A method of reinforcing a plastic bar member to strengthen it against bending forces comprising the steps of providing a rigid strip of metal reinforcing having a width W and a thickness T; forming a groove in said plastic of a depth greater than W and a width substantially equal to T; positioning said metal reinforcing member in said groove; placing a thin strip of plastic over the exposed position of said metal reinforcing member and applying beads of molten plastic over said strip to bond to said thin strip and each side of the groove by melting and solidifying in sequence.
  • FIG. 1 is a fragmentary elevational view of an electroplating barrel and its associated gears and hanger bracket, illustrating one use of the reinforced bars of this invention.
  • FIG. 2 is a side elevational view taken along line 2-2 of FIG. 1.
  • FIG. 3 is a sectional view taken along line 3--3 of FIG. 1.
  • FIG. 4 is a sectional view taken along line 44 of FIG. 1.
  • FIG. 5 is an enlarged sectional view taken along line 5-5 of FIG. 1.
  • This invention is concerned with strengthening a plastic bar against bending and by way of illustration, the invention is shown in the drawings as 'being a part of a plastic barrel used in electroplating, phosphating or the like. The environment shown will be described briefly.
  • the barrel 28 is supported from the channel member 29 by two pairs of hangers 41, each having upwardly extending arms 42 and 44.
  • the arms 42 and 44 are adjustably joined .to the channel by short angle members 46 and 48 respectively [See FIG. 1].
  • Each of the angles 46 and 48 is welded to a lateral face of the channel 29 and has elongated bolt receiving slots 47 and 49 formed therein. Suitable machine screws pass through the slots into engagement with the respective hanger arms. By releasing the screws, the vertical position of the hangers 41 can be readily adjusted.
  • the hangers extend vertically downward from the channel 29 and support the drum within the electrolyte solution.
  • the construction of the hangers is of particular importance to the invention.
  • the hangers, as well as the remaining elements of the drum assembly must be capable of withstanding a particularly corrosive. atmosphere.
  • the hangers must have suitable strength to resist the forces exerted thereon during operation and use of the assembly.
  • the hanger arms 42 and 44 are formed from a corrosion resistant plastic such as polypropylene with an internal reinforcing bar of steel or other suitable metal.
  • FIG. 5 is a cross-section through one of the arms or bars 44 showing the internal reinforcing member 50 which is, in this instance, a flat steel bar.
  • the construction of each of the hanger arms 42 and 44 is identical and, accordingly, only one will be described in detail.
  • the arm 44 is formed from a rectangular, elongated section of polypropylene provided with a longitudinally extending slot 52 which is of a width sufiicient to closely receive the metal bar 50, said bar having a width W and a thickness T
  • the slot 52 extends into the main body of polypropylene a depth greater than the width W of bar 50.
  • a strip 54 of plastic or similar material Positioned over the outer edge of the bar and within the slot 52 is a strip 54 of plastic or similar material having heat insulating properties.
  • the strip 54 preferably extends throughout the length of the bar 50 and is of a thickness sufficient to provide a groove inwardly from the outer edge of the slot 52.
  • a second strip of plastic 56 is welded to the main block over the strip 54.
  • the welding is accomplished by a conventional plastic welding gun which extrudes a strip of heated plastic into the groove for bonding with the side walls of the groove and the insert 54.
  • Insert 54 serves to prevent the metal reinforcing bar from acting as a heat sink and conducting heat away from the heated weld strip. Withoutstrip 54, the weld bead 56 will deposit in the slot against the bar 50 without bonding to either side wall. This layered arrangement assures a good fluid tight weld joint between the strip 56 and the main body of the block. Thus, the metal reinforcing strip is totally encased in the plastic and is not exposed to the corrosive environment.
  • the purpose of the encapsulated steel bars 50 is to strengthen the arms 42, 44 in shear, bending and torsion.
  • the plastic if of sufficient strength in tension to carry the load in the drum but without the steel bars the arms fail rather quickly due to the bending moments resulting from the drum rotation and the sway imparted by the tumbling parts therein.
  • the transversely extending rods or bars are also reinforced with steel strips 51 (see FIG. 1).
  • a method of reinforcing a plastic bar member to strengthen it against bending forces comprising the steps of providing a rigid strip of metal reinforcing having a width W and a thickness T;
  • the length of said metal reinforcing member being less than the length of the bar
  • metal reinforcing member is steel and the plastic bar, strip and head are polypropylene.
  • metal reinforcing member is steel and the plastic bar, strip and bead are polypropylene.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)

Abstract

A method of reinforcing a plastic bar member to strengthen it against bending forces comprising the steps of providing a rigid strip of metal reinforcing having a width W and a thickness T; forming a groove in said plastic of a depth greater than W and a width substantially equal to T; positioning said metal reinforcing member in said groove; placing a thin strip of plastic over the exposed position of said metal reinforcing member and applying beads of molten plastic over said strip to bond to said thin strip and each side of the groove by melting and solidifying in sequence.

Description

United States Patent 1 Singleton Oct. 23, 1973 METHOD OF REINFORCING A PLASTIC 21 Appl. No.2 182,486
Related U.S. Application Data [62] Division of Ser. No. 91,394, Nov. 20, 1970, Pat. No.
[56] References Cited UNITED STATES PATENTS 753,641 3/1904 Shepherd 156/293 3,119,204 l/l964 Williams 52/309 3,639,193 2/l972 Hawkins 2,482,339 9/1949 Hibbard et a1 52/309 3,452,497 7/1969 Warp 52/309 Primary ExaminerDouglas J. Drummond Attorney-Robert J. Fay et al.
[57] ABSTRACT A method of reinforcing a plastic bar member to strengthen it against bending forces comprising the steps of providing a rigid strip of metal reinforcing having a width W and a thickness T; forming a groove in said plastic of a depth greater than W and a width substantially equal to T; positioning said metal reinforcing member in said groove; placing a thin strip of plastic over the exposed position of said metal reinforcing member and applying beads of molten plastic over said strip to bond to said thin strip and each side of the groove by melting and solidifying in sequence.
10 Claims, 5 Drawing Figures PATENIEUIIBI 23 m3 ALBERT SINGLETON BY 7 I 44 244W ATTORNEYS METHOD OF REINFORCING A PLASTIC BAR This is a divisional application of application Ser. No. 91,394, filed Nov. 20, 1970, entitled IMPROVED HANGER BRACKET AND DRIVING APPARATUS FOR PLATING BARRELS, now Pat. No. 3,668,103, issued Jun 6, 1972.
To the extent necessary for an understanding of the invention, the background to this invention as described in the above-identified co-pending divisional application, is incorporated herein by reference.
FIG. 1 is a fragmentary elevational view of an electroplating barrel and its associated gears and hanger bracket, illustrating one use of the reinforced bars of this invention.
FIG. 2 is a side elevational view taken along line 2-2 of FIG. 1.
FIG. 3 is a sectional view taken along line 3--3 of FIG. 1.
FIG. 4 is a sectional view taken along line 44 of FIG. 1.
FIG. 5 is an enlarged sectional view taken along line 5-5 of FIG. 1.
This invention is concerned with strengthening a plastic bar against bending and by way of illustration, the invention is shown in the drawings as 'being a part of a plastic barrel used in electroplating, phosphating or the like. The environment shown will be described briefly.
The barrel 28 is supported from the channel member 29 by two pairs of hangers 41, each having upwardly extending arms 42 and 44. The arms 42 and 44 are adjustably joined .to the channel by short angle members 46 and 48 respectively [See FIG. 1]. Each of the angles 46 and 48 is welded to a lateral face of the channel 29 and has elongated bolt receiving slots 47 and 49 formed therein. Suitable machine screws pass through the slots into engagement with the respective hanger arms. By releasing the screws, the vertical position of the hangers 41 can be readily adjusted.
As best shown in FIGS. 1, the hangers extend vertically downward from the channel 29 and support the drum within the electrolyte solution. The construction of the hangers is of particular importance to the invention. As can be appreciated, because of the corrosive nature of the electrolyte or cleaning solutions used, the hangers, as well as the remaining elements of the drum assembly, must be capable of withstanding a particularly corrosive. atmosphere. Further, the hangers must have suitable strength to resist the forces exerted thereon during operation and use of the assembly. In the subject embodiment, the hanger arms 42 and 44 are formed from a corrosion resistant plastic such as polypropylene with an internal reinforcing bar of steel or other suitable metal. FIG. 5 is a cross-section through one of the arms or bars 44 showing the internal reinforcing member 50 which is, in this instance, a flat steel bar. The construction of each of the hanger arms 42 and 44 is identical and, accordingly, only one will be described in detail.
Referring again to FIG. 5, it will be seen that the arm 44 is formed from a rectangular, elongated section of polypropylene provided with a longitudinally extending slot 52 which is of a width sufiicient to closely receive the metal bar 50, said bar having a width W and a thickness T The slot 52 extends into the main body of polypropylene a depth greater than the width W of bar 50. Positioned over the outer edge of the bar and within the slot 52 is a strip 54 of plastic or similar material having heat insulating properties. The strip 54 preferably extends throughout the length of the bar 50 and is of a thickness sufficient to provide a groove inwardly from the outer edge of the slot 52. A second strip of plastic 56 is welded to the main block over the strip 54. The welding is accomplished by a conventional plastic welding gun which extrudes a strip of heated plastic into the groove for bonding with the side walls of the groove and the insert 54. Insert 54 serves to prevent the metal reinforcing bar from acting as a heat sink and conducting heat away from the heated weld strip. Withoutstrip 54, the weld bead 56 will deposit in the slot against the bar 50 without bonding to either side wall. This layered arrangement assures a good fluid tight weld joint between the strip 56 and the main body of the block. Thus, the metal reinforcing strip is totally encased in the plastic and is not exposed to the corrosive environment.
The purpose of the encapsulated steel bars 50 is to strengthen the arms 42, 44 in shear, bending and torsion. The plastic if of sufficient strength in tension to carry the load in the drum but without the steel bars the arms fail rather quickly due to the bending moments resulting from the drum rotation and the sway imparted by the tumbling parts therein.
In addition to reinforcing the hanger rods 41, the transversely extending rods or bars are also reinforced with steel strips 51 (see FIG. 1).
To the extent needed for a complete understanding of this invention, the applicants co-pending application identified above is incorporated by reference.
What is claimed is:
l. A method of reinforcing a plastic bar member to strengthen it against bending forces comprising the steps of providing a rigid strip of metal reinforcing having a width W and a thickness T;
forming a groove in said plastic of a depth greater than W and a width substantially equal to T; positioning said metal reinforcing member in said groove;
placing a thin strip of plastic over the exposed portion of said metal reinforcing member and applying beads of molten plastic over said strip to bond to said thin strip and each side of the groove by melting and solidifying in sequence.
2. The method as defined in claim I wherein said plastic is polypropylene. j
3. The method as defined in claim 1 wherein the plastic bar is of a length greater than its width or thickness,
forming the groove such that it extends along the full length of the bar,
the length of said metal reinforcing member being less than the length of the bar,
placing the thin strip of plastic into the groove such that it covers the full length of the metal reinforcing member as well as its ends.
4. The method as defined in claim 3 including applying the beads of molten plastic over said strip to seal the metal reinforcing member within the plastic bar, said seal being fluid tight.
5. The method as defined in claim 4 wherein the metal reinforcing member is steel and the plastic bar, strip and head are polypropylene.
6. The method as defined in claim 1 including applying the beads of molten plastic over said strip to seal the strip and bead are polypropylene.
9. The method as defined in claim 3 wherein the metal reinforcing member is steel and the plastic bar, strip and bead are polypropylene.
10. The method as defined in claim 4 wherein said plastic is polypropylene.

Claims (9)

  1. 2. The method as defined in claim 1 wherein said plastic is polypropylene.
  2. 3. The method as defined in claim 1 wherein the plastic bar is of a length greater than its width or thickness, forming the groove such that it extends along the full length of the bar, the length of said metal reinforcing member being less than the length of the bar, placing the thin strip of plastic into the groove such that it covers the full length of the metal reinforcing member as well as its ends.
  3. 4. The method as defined in claim 3 including applying the beads of molten plastic over said strip to seal the metal reinforcing member within the plastic bar, said seal being fluid tight.
  4. 5. The method as defined in claim 4 wherein the metal reinforcing member is steel and the plastic bar, strip and bead are polypropylene.
  5. 6. The method as defined in claim 1 including applying the beads of molten plastic over said strip to seal the metal reinforcing member within the plastic bar, said seal being fluid tight.
  6. 7. The method as defined in claim 6 wherein the metal reinforcing member is steel and the plastic bar, strip and bead are polypropylene.
  7. 8. The method as defined In claim 1 wherein the metal reinforcing member is steel and the plastic bar, strip and bead are polypropylene.
  8. 9. The method as defined in claim 3 wherein the metal reinforcing member is steel and the plastic bar, strip and bead are polypropylene.
  9. 10. The method as defined in claim 4 wherein said plastic is polypropylene.
US00182486A 1970-11-20 1971-09-21 Method of reinforcing a plastic bar Expired - Lifetime US3767504A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US9139470A 1970-11-20 1970-11-20
US18248671A 1971-09-21 1971-09-21

Publications (1)

Publication Number Publication Date
US3767504A true US3767504A (en) 1973-10-23

Family

ID=26783918

Family Applications (1)

Application Number Title Priority Date Filing Date
US00182486A Expired - Lifetime US3767504A (en) 1970-11-20 1971-09-21 Method of reinforcing a plastic bar

Country Status (1)

Country Link
US (1) US3767504A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882041A (en) * 1986-03-06 1989-11-21 Delta Projects Inc. Diluent substitution process
US5491951A (en) * 1991-11-06 1996-02-20 Riegelman; Harry M. Composite framing member construction for windows and doors
US5634306A (en) * 1991-11-06 1997-06-03 Riegelman; Harry M. Composite framing member construction for windows and doors

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US753641A (en) * 1903-08-13 1904-03-01 Charles Shepherd Panel.
US2482339A (en) * 1944-12-29 1949-09-20 Ford Motor Co Plastic panel with mounting means
US3119204A (en) * 1960-06-10 1964-01-28 Gladys M Williams Sealing device for building structure joints
US3452497A (en) * 1967-07-19 1969-07-01 Flex O Glass Inc Plastic mat with reinforced end
US3639193A (en) * 1968-06-03 1972-02-01 Gen Alarm Corp Apparatus for forming a wiring system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US753641A (en) * 1903-08-13 1904-03-01 Charles Shepherd Panel.
US2482339A (en) * 1944-12-29 1949-09-20 Ford Motor Co Plastic panel with mounting means
US3119204A (en) * 1960-06-10 1964-01-28 Gladys M Williams Sealing device for building structure joints
US3452497A (en) * 1967-07-19 1969-07-01 Flex O Glass Inc Plastic mat with reinforced end
US3639193A (en) * 1968-06-03 1972-02-01 Gen Alarm Corp Apparatus for forming a wiring system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882041A (en) * 1986-03-06 1989-11-21 Delta Projects Inc. Diluent substitution process
US5491951A (en) * 1991-11-06 1996-02-20 Riegelman; Harry M. Composite framing member construction for windows and doors
US5579618A (en) * 1991-11-06 1996-12-03 Riegelman; Harry M. Composite framing member construction for windows and doors
US5634306A (en) * 1991-11-06 1997-06-03 Riegelman; Harry M. Composite framing member construction for windows and doors

Similar Documents

Publication Publication Date Title
US3767504A (en) Method of reinforcing a plastic bar
MXPA96004326A (en) Improvements in and related to composite door coating panels
DE102007056635A1 (en) Insulating block sticking method for liquid gas tanker ship, involves pressing insulating block against inner body until polymerization of adhesive, and applying adhesive beads on lower side of panel of block along parallel sinuous lines
PT752037E (en) PERFORMANCES IN DOUBLE AND RELATED COMPONENTS OF DOUBLE-COATING COMPONENTS
US6071631A (en) Heat-resistant and anticorrosive lamellar metal-plated steel material with uniform processability and anticorrosiveness
US3648353A (en) Method of making automotive trim
US3341680A (en) Method of weld-jointing aluminum and aluminum alloys with steel
US3846271A (en) Plating barrel with spiral sides
NO163636B (en) SAFETY DOER.
US3716470A (en) Electroplating barrel constructed from two disparate plastics
US2569368A (en) Joining metal parts
US3754874A (en) Automotive trim material
US3475143A (en) Metal to metal bonds with cuprous halide melts
DE2713848A1 (en) MULTIPLE GLAZING WITH INTERMEDIATE LAYER
US1342664A (en) Construction of bodies of motor and other vehicles
US3939054A (en) Nonsymmetrical hexagonal electroplating barrel
CN210979305U (en) Arc-shaped smooth profile frame
US1290092A (en) Ship's deck structure, bulkhead structure and the like.
US2764267A (en) Assembly of dissimilar metals and method of manufacture
CN214948155U (en) Ultrathin aluminum alloy profile
JPS6154117B2 (en)
DE7502257U (en) Metal window frame
CA1144405A (en) Backing support strip for welding
JPH0433872B2 (en)
SU1201091A1 (en) Method of manufacturing laminated metal panels

Legal Events

Date Code Title Description
AS Assignment

Owner name: SINGLETON, RAYMUND, 31653 ELECTRIC BLVD., AVON LAK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SINGLETON, ALBERT;REEL/FRAME:004375/0577

Effective date: 19850228

STCF Information on status: patent grant

Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES)