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Publication numberUS926695 A
Publication typeGrant
Publication dateJun 29, 1909
Filing dateFeb 6, 1909
Priority dateFeb 6, 1909
Publication numberUS 926695 A, US 926695A, US-A-926695, US926695 A, US926695A
InventorsWilliam Robert Salmon Frost
Original AssigneeWilliam Robert Salmon Frost
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Vulcanizing apparatus for tire tubes or covers.
US 926695 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)



I Patented June 29, 1909.




Patented June 29, 1909.




Specification of Letters Pat-ea.

.Patented June 29, 1909.

Application filed February 6, 1909. Serial No. 476,412.

T 0 all whom it may concern:

Be it known that 1, WILLIAM IROBERT' SALMON F RosT, a subject of the King of England, residing at London, England, have in vented certain new and useful Improvements in Vuleanizing Apparatus for Tire Tubes or Covers, of which the following is a specification.

This invention relates to vulcanizing apparatus for tire-tubes or covers and has particular reference to the apparatus of the kind in which the heat necessary for vulcanization is obtained by passing an electric current through a conductor.

According to this invention the vulcanizer is so constructed as to provide a flexible surface that adapts itself to the surface of the part under treatment. For this purpose the .conductor may be flexible or arranged'to cooperate with a flexible heat conducting foundation to which it gives up its heat. 'Theapparatus is thus adapted to make intimate contact with tires of various shapes or with -different parts of a tire.

According to one method of carrying out this invention the vulcanizer is made in the form of a flexible strip or band that may be wound around the tube or bent over any part of it according to the character and situation of the repair required.

In the accompanying drawings: Figure 1 is a perspective view of the vulcanizer in part section constructed according to one method of carrying out this invention; Fig. 2 is a perspective view showing a modified form; Fig. 3 is a perspective View of another modification; Fig. 4 1s a perspective view of yet another modification, and Fig. 5 shows in elevation a device for applying pressure to the vulcanizer.

Like letters indicate like parts throughout the drawings.

The form of vulcanizer shown in Fig. 1.

comprises a metal or other strip A that is a goo conductor of heat and-which forms the foundation for carrying the resistance wires B. On the wires glass or other insulating. -beads B are threaded. Preferably these beads are D-shaped as shown and are placed with their flat face toward the metal foundatron A whereby the wires, although insulated from the foundation, are brought as close to the same as ossible and thus readily give up their heat t iereto. The wires are closed in by a cover 0 that may be of any suitable flexible material such as rubber or canvas I continuous heat-conducting surface is presented to the tube E under repair. It will be understood that the vulcanizer maybe made of any length according to requirements and provided with terminals connecting the wires B and affording means whereby they may be connected to a suitable source of electric current and instead of being wound around the tube as 'shown, it may be laid circumferentially thereon or in any other position that the re air demands. It will be seen that the meta base and in fact the whole vulcanizer provides a tape that'is sufficiently strong to allow it to be tightly pulled when applying it,- for the purpose of causing it to bear with the necessary pressure upon the part to be treated.

In Fig. 2 the conductor is made in the form of a gauze strip Fand this is covered with material F that may give it the requisite tensile strength and also conserve the heat. The gauze strip is connected to a terminal F and may be made of any length, the other end being similarly provided with a terminal to receive the wires from the battery or other source of supply. With this form of vulcanizer the heated conductors may be brought into direct contact with the surface to be treated.

In Fig. 3 the conductors G are shown as woven into the fabric G They may be so woven as to appear on the surface if desired and in any case they are preferably dlsposed nearer that side which is intended to be brought into contact with the part to be canizer shown in Fig. 1 instead of the plain strip illustrated.

1* ig. 4 shows an arrangement whereby any one conductor may be withdrawn should it become damaged and another entered in its place. For this urpose the conductors H are threaded with insulating beads H and each is separately mounted in a tube J. These tubes-may be made of spirals of wire and they may be secured by vulcanizing or otherwise to a backing K. r The backing provides the necessary means for conserving the heat and may also provide the requisite tensile strength to the vulcanizer. ,The resistance wires H may project through a metal block L that is vulcanized or otherwise secured on to the strip .K and their ends may besoldered thereto and covered by a strip L detachably secured to the block L. By removing the strip L access may be had to the ends of the conductors and thus any one maybe released and withdrawn for the urpose of substituting another. The tubes J may constitute the heat conducting medium and may be a plied direct to the surface to be treated oit ey may be covered with a thin metal p ate.

It will be understood that all of the vulcanizers shown in the drawings may be made of any length or shape according to requirement and for this reason a portion of each construction only is shown.

In some cases it may be desirable to local-' ize the pressure on the vulcanizer. For this purpose the device shown in Fig. 5 may be employed and it comprises a leather or other flexlble strap M that has securedto it a series of nuts or screw-threaded washers N. Through each nut a thumb-screw N is passed and this carries a block N If it is desired to appl a flexible vulcanizer shown diagrammatica ly at O to a tire P while on the felly P, the vulcanizer may be secured by passing the strap M around the tire and the felly after the vulcanizer is in position and the blocks. N 2 may be made to bear locally upon the vulcanizer. After the strap has been drawn tight, further pressure may be 'pIut upon the blocks byrotati g the screws The position of the blocks can obviously be changed by sliding the strap around in one direction or the other by entering the screws inidle nuts shown at N Instead of connecting all the conductors to a single terminal, their ends may be brought out separately and connected to separate terminals so that they maybe various y grouped when-using the apparatus to suit the voltage available.

If desired liquid, for instance water, may be employed as the heat-conducting medium and for this purpose the vulcanizer is made hollow, the interior being filled with the liquid and the conductors carried through it. For instance, the filling D may be omitted from the vulcanizer shown in Fig. 1 and the space between the cover C and the foundation A filled with water. It is found that with such an arrangement the heat is quickly conveyed from the resistance wires B to the heat distributing surface A. Instead of a liquid a finely divided solid may be used for the-same pur ose.

What I claim as my invention and desire to secure by Letters Patent is 1. A vulcanizing device comprising a flexible metallic strip adapted to be heated, and a flexible heat-conserving strip carried upon one face of the first-mentioned strip, the Whole being in the form of a tape and adapted to make intimate contact with and to conform to the surface to be vulcanized.

2. A vulcanizing device comprising a flexible metallic strip adapted to be heated, and a flexible heat-conserving strip carried u pen one face of the first-mentioned strip, said heat-conserving strip being somewhat narrower than the other strip whereby to leave the latter uncovered along its lateral edges, the whole being in the form of a tape and adapted to make intimate contact with and to conform to the surface to be vulcanized.

3. A vulcanizing device comprising a flexible heat-conducting metal base strip, an electrical conductor in close proximity to the strip and insulated therefrom, and a flexible cover of inferior heat-conducting material arranged over the said electrical conductor.

4. A vulcanizing apparatus comprising a flexible heat-conserving strip, a plurality of metal tubes secured thereto, electrical resistance wires passing through the tubes, and insulators carried by the wires within the tubes.

5.. A vulcanizing device comprising a flexi- "ble heat-conserving strip, a plurality of metal tubes secured thereto, electrical resistance wires (passing through the tubes, insulators carrie by the wires within the tubes a metal block secured .to the heat-conserving stri) and to which block one end of the wires 1s soldered and a covering strip detaehably secured to the block over the soldered end of the wires.

6. Ina vulcanizin apparatus, the combination with a flexible strap adapted to be passed around a Wheel folly and a tire thereon and to have its ends secured together, name to this specification in the presence of threadedl nutslonh the strapBl thlpmbscgegs two subscribing Witnesses. )assing t iroug 1 t emits, a 00 carrie y i 1 H iaach thumb-screw, and a flexible Vulcenizing WILLIAM ROBLRI SALMON FROST 5 device adapted-t0 be applied to the tire and Witnesses:

to have the blocks pressed thereagainst. PERCY W. H. IIIGGINSON,

In testimeny whereof I have signed my H. D. JAMESON.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2419848 *Apr 28, 1945Apr 29, 1947Morey Glen HElectrical heater and method of manufacturing it
US2498442 *Dec 14, 1946Feb 21, 1950Morey Glen HElectrical heater and method of manufacturing it
US2565390 *Dec 28, 1949Aug 21, 1951Mitnowsky DavidElectric mattress heater
US2758194 *Apr 27, 1954Aug 7, 1956Andrew G HeronFlexible hoses
US2929909 *Feb 15, 1957Mar 22, 1960Goodyear Tire & RubberElectric heating element and method of and apparatus for producing it
US4708608 *Jun 17, 1986Nov 24, 1987Dirocco JobbieHeat pad
Cooperative ClassificationB29C73/305