US1260275A - Mandrel for making inner tubes for pneumatic tires. - Google Patents

Mandrel for making inner tubes for pneumatic tires. Download PDF

Info

Publication number
US1260275A
US1260275A US14481017A US14481017A US1260275A US 1260275 A US1260275 A US 1260275A US 14481017 A US14481017 A US 14481017A US 14481017 A US14481017 A US 14481017A US 1260275 A US1260275 A US 1260275A
Authority
US
United States
Prior art keywords
mandrel
pneumatic tires
inner tubes
valve fitting
tube
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
US14481017A
Inventor
John A Mctaggart
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US14481017A priority Critical patent/US1260275A/en
Application granted granted Critical
Publication of US1260275A publication Critical patent/US1260275A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
    • B32B17/10816—Making laminated safety glass or glazing; Apparatus therefor by pressing
    • B32B17/10825—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts
    • B32B17/10834—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts using a fluid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/67005—Apparatus not specifically provided for elsewhere
    • H01L21/67011—Apparatus for manufacture or treatment
    • H01L21/67092—Apparatus for mechanical treatment

Definitions

  • the principal object of the present invention is to provide for incorporating the valve fitting in the inner tube during its manufacture and prior to its vulcanization so that during the latter process the rubber material of the tube makes a close and excellent fit and joint with the contracted portion of the valve fitting, thereby not only facilitating and cheapening the manufacture but also providing improved inner tubes.
  • Fig. 2 is a plan view of a part of the mandrel.
  • Fig. 3 is a view, drawn to an enlarged scale, illustrating partly in section and partly in elevation how the material of the inner tube after vulcanization makes a tight joint with the contracted portion of the valve.
  • Fig. 4 is a top or plan view, partly in section, of a valve fitting
  • Figs. 5 and 6 are views illustrating a modification.
  • 1 is a mandrel annular in form and circular in cross-section. It is shown to consist of three segments of which two, 2 and 3, are relatively short.
  • the section 3 is detachably connected with the sections 1 and2 by dove-tail connections 4, and the section 2 is detachably connected with the section 1 by a dowel-pin connection 5.
  • the cavity 6 is a cavity formed in the mandrel in the present instance in the section 2 thereof and it is adapted to receive the head 7 of the valve fitting and hold the valve fitting projecting radially of the annular mandrel 1, with the contracted portion 7 in exposed position.
  • the cavity 6 not only holds the valve fitting in projecting position, as has been described, but also permits the head of the valve fitting to be lifted out of the cavity and so be detached from the mandrel.
  • the cavity 6 is adapted to receive the stem 8 of the valve fitting and hold it in such position that the contracted portion 7 is exposed.
  • Two parts, 9 and 10, of the mandrel may be detachably held together as by dowel-pins 11, and the joint between these parts 9 and 10 is, at the cavity 6 so that when the parts are disconnected the valve fitting can be removed by a motion of rotation.
  • the parts of the mandrel shown in Fig. 1 are assembled and the valve fitting arranged in the cavity 6.
  • the tube is then formed I around the mandrel with the valve in place through the wall of the tube, which surrounds the contracted portion 7 a of the valve fitting.
  • this same step is practised.
  • the next step is to vulcanize the tube with the valve fitting in place through the wall of the tube.
  • the tube having been vulcanized with the valve fitting in place in its wall is removed and, referring to Fig. 1, this is done by slitting the tubes circumferentially, for example, along the part 3 of the mandrel, which part 3 is then removed.
  • the head of the valve fitting is then lifted out of the cavity 6 and the section 2 of the manslit previously formed therein.
  • the section 1 of the mandrel is worked out through the slit in the tube.
  • one of the parts for example, the part 10 of the mandrel, is worked out of the tube which can be turned inside out for the purpose.
  • the part 10 is removed from the part 9 and the tube removed in a similar way from the part 9 of the mandrel, so that the valve fitting turns out of the cavity 6*, or more accurately, out of the part of the cavity 6 that is formed in the part 9 of the mandrel.
  • the tube, vulcanized, with the valve fitting in place having been removed from the mandrel the slit is appropriately closed.
  • the material of the is provided with a valve stem cavity into tu e as it softens, flows and makes a tight and out of which a valve stem can be lifted.
  • Apparatus for making inner tubes for contracted portion of the fitting pneumatic tires Which comprises an annular 5 What I claim is: mandrel consisting of detachable sections of 1. Apparatus for making inner tubes for which one is provided with a valve holding pneumatic tires comprising a mandrel concavity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Description

J. A. McTAGGART.
MANDREL FOR MAKING lNNER TUBES FOR PNEUMATIC TIRES.
APPLICATION FILED JAN. 21, 1917.
1,260,275. Patented Mar. 19, 1918.
JOHN A. MGTAGGART, OF PHILADELPHIA, PENNSYLVANIA.
MANDREL FOR MAKING INNER TUBES FOR PNEUMATIC TIRES.
Specification of Letters Patent.
Patented Mar. 19, 1918.
Application filed January 27, 1917. Serial No. 144,810.
To all whom it may concern: I
Be it known that 1, JOHN A. MOTAGGART, a citizen of the United States, and a resident of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in the Mandrels for Making Inner Tubes for Pneumatic Tires, of'which the following is a specification.
The principal object of the present invention is to provide for incorporating the valve fitting in the inner tube during its manufacture and prior to its vulcanization so that during the latter process the rubber material of the tube makes a close and excellent fit and joint with the contracted portion of the valve fitting, thereby not only facilitating and cheapening the manufacture but also providing improved inner tubes.
Generally stated the invention'consists of the improvements to be presently described and finally claimed.
In the following description reference will be made to the accompanying drawings, in which A Figure 1, is a View with parts broken away of a mandrel embodying features of the in vention.
Fig. 2, is a plan view of a part of the mandrel.
Fig. 3, is a view, drawn to an enlarged scale, illustrating partly in section and partly in elevation how the material of the inner tube after vulcanization makes a tight joint with the contracted portion of the valve.
Fig. 4, is a top or plan view, partly in section, of a valve fitting, and
Figs. 5 and 6, are views illustrating a modification.
In the drawings, 1 is a mandrel annular in form and circular in cross-section. It is shown to consist of three segments of which two, 2 and 3, are relatively short. The section 3 is detachably connected with the sections 1 and2 by dove-tail connections 4, and the section 2 is detachably connected with the section 1 by a dowel-pin connection 5.
6, is a cavity formed in the mandrel in the present instance in the section 2 thereof and it is adapted to receive the head 7 of the valve fitting and hold the valve fitting projecting radially of the annular mandrel 1, with the contracted portion 7 in exposed position. The cavity 6 not only holds the valve fitting in projecting position, as has been described, but also permits the head of the valve fitting to be lifted out of the cavity and so be detached from the mandrel.
In Figs. 5 and 6, the cavity 6 is adapted to receive the stem 8 of the valve fitting and hold it in such position that the contracted portion 7 is exposed. Two parts, 9 and 10, of the mandrel may be detachably held together as by dowel-pins 11, and the joint between these parts 9 and 10 is, at the cavity 6 so that when the parts are disconnected the valve fitting can be removed by a motion of rotation.
Having described novel apparatus adapted for the practice of the method of the invention, I will now proceed to describe the method of using the same.
The parts of the mandrel shown in Fig. 1 are assembled and the valve fitting arranged in the cavity 6. The tube is then formed I around the mandrel with the valve in place through the wall of the tube, which surrounds the contracted portion 7 a of the valve fitting. In using the mandrels of Figs. 5 and 6, this same step is practised. The next step is to vulcanize the tube with the valve fitting in place through the wall of the tube. Thereafter the tube having been vulcanized with the valve fitting in place in its wall, is removed and, referring to Fig. 1, this is done by slitting the tubes circumferentially, for example, along the part 3 of the mandrel, which part 3 is then removed. The head of the valve fitting is then lifted out of the cavity 6 and the section 2 of the manslit previously formed therein. Thereafter the section 1 of the mandrel is worked out through the slit in the tube.
In connection with Figs. 5 and 6, one of the parts, for example, the part 10 of the mandrel, is worked out of the tube which can be turned inside out for the purpose. The part 10 is removed from the part 9 and the tube removed in a similar way from the part 9 of the mandrel, so that the valve fitting turns out of the cavity 6*, or more accurately, out of the part of the cavity 6 that is formed in the part 9 of the mandrel. The tube, vulcanized, with the valve fitting in place having been removed from the mandrel the slit is appropriately closed. Durin the vulcanization the material of the is provided with a valve stem cavity into tu e as it softens, flows and makes a tight and out of which a valve stem can be lifted. 10 joint as indicated at a in Fig. 3 with the 2. Apparatus for making inner tubes for contracted portion of the fitting. pneumatic tires Which comprises an annular 5 What I claim is: mandrel consisting of detachable sections of 1. Apparatus for making inner tubes for which one is provided with a valve holding pneumatic tires comprising a mandrel concavity.
'sisting of detachable sections, of which one JOHN A. MOTAGGART.
US14481017A 1917-01-27 1917-01-27 Mandrel for making inner tubes for pneumatic tires. Expired - Lifetime US1260275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14481017A US1260275A (en) 1917-01-27 1917-01-27 Mandrel for making inner tubes for pneumatic tires.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14481017A US1260275A (en) 1917-01-27 1917-01-27 Mandrel for making inner tubes for pneumatic tires.

Publications (1)

Publication Number Publication Date
US1260275A true US1260275A (en) 1918-03-19

Family

ID=3327954

Family Applications (1)

Application Number Title Priority Date Filing Date
US14481017A Expired - Lifetime US1260275A (en) 1917-01-27 1917-01-27 Mandrel for making inner tubes for pneumatic tires.

Country Status (1)

Country Link
US (1) US1260275A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237913A (en) * 1963-06-24 1966-03-01 Thiokol Chemical Corp Collapsible mandrel for forming a cavity in solid propellant rocket fuel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237913A (en) * 1963-06-24 1966-03-01 Thiokol Chemical Corp Collapsible mandrel for forming a cavity in solid propellant rocket fuel

Similar Documents

Publication Publication Date Title
US2221470A (en) Method of making flexible pressure containers
US2446281A (en) Corrugated tube manufacture
US1260275A (en) Mandrel for making inner tubes for pneumatic tires.
US2240129A (en) Valve
US1537860A (en) Apparatus for making hollow rubber articles, such as nipples, finger cots, bulbs, and the like
CN109789622B (en) Method for manufacturing a sleeve by injection moulding, associated tool and resulting sleeve
US2372382A (en) Method of constructing safety inner tubes
US935254A (en) Method of making rubber hose.
US1853515A (en) Inflatable ball and method of making same
US2278551A (en) Method of making ball centers and article
US1365462A (en) Method and apparatus for manufacturing inflated rubber articles
US1771861A (en) Tennis ball and the like and the manufacture thereof
US842217A (en) Method of forming inner tubes for tires.
US736229A (en) Method of making hollow balls.
US836772A (en) Process of manufacturing pneumatic tires.
US1190731A (en) Hollow rubber article and process of producing same.
GB336076A (en) Improvements in or relating to the inner tubes of pneumatic tyres, and other articles needing joining during production, and the manufacture thereof
US1282160A (en) Method of sealing ends of rubber hose.
US3997641A (en) Method of manufacturing tire inner tubes
US1354174A (en) Method of making inner tubes
US1277179A (en) Method and apparatus for making hollow rubber articles.
US1354459A (en) Expansible core for india-rubber articles
US762063A (en) Process of making hollow rubber articles.
US1148226A (en) Method of manufacture of rubber water-bottles.
US1727391A (en) Method of molding inner tubes