US2146293A - Apparatus for making dipped goods - Google Patents

Description

Fbp7, 1939.

J. R. GAMMETER APPARATUS FOR MAKING DIPPED GOODS Filed June 30, 1957 3 Sheets-Sheet l 4 John RhCmmmeier 7 Feb. 7, 1939. I J. R. GAMMETER APPARATUS FOR MAKING DIPEED GOODS Filed June 30, 1957 Y s Sheets-Sheet 2 John R. Gammeter "Feb. 7, 1939. J. R. GAMMETER APPARATUS FOR MAKING DIPPED GOQDS 5 Sheets-Sheet 3 Filed June 30, 1937 Patented Feb. 7, 1939 V UNITED STATES PATENT OFFICE 6 Claims.

provide an improved form conveyer for use in making dipped goods and to provide an improved device for rolling reinforcing rings or beads at the edges of the articles.

It has heretofore been proposed to provide a form conveyer which passes through various dip"- ping and drying stations, a bead-rolling apparatus, a vulcanizer and a stripping station, but such conveyers have not been entirely satisfactory, and the bead-rolling operation has required highly accurate control on drying times, etc. because latex which is now quite generally used for making these goods, if too dry will not roll effectively in the bead. Variations in atmospheric conditions render such accurate control extremely difficult. Moreover by the apparatus heretofore used there is a tendency to build a twist into the bead which is objectionable in the goods after they are cured.

One object of the present invention is to provide a simple, effective conveyer mechanism for the forms.

Another object of the invention is to provide a simple, effective bead-rolling device in which such accurate control of drying under varying 30 conditions is not required and in which there is no tendency to establish a twistin the bead which will be noticeable in the finally cured article.

The foregoing and other purposes of the invention are attained in the apparatus illustrated 35 in the accompanying drawings and described below. It is to be understood that the invention is not limited to the specific form thereof shown and described.

Of the accompanying drawings: 40 Figure l is a plan view of apparatus embodying the invention. Figure 2 is a front elevation thereof. Figure 3 is a section on line 3-3 of Figure 1. Figure 4 is an enlarged View partly in diametral 45 section of a form and'its mounting.

Figure 5 is a section on line 5-5 of Figure 1. Referring to the drawings, the numeral I0 designates a flexible conveyer belt which may be of rubber, rubber and fabric, metal, leather or 50 other suitable material arranged to be driven over suitable pulleys, (not shown) and over track or guide II, which may be supported on standards l2, I2.

Secured upon belt Ill are cross bars l3 which 55 preferably project from both sides of belt I0 and having hinged on their oppositeends, mountings l4, M for rotatable form supports l5, l5. Mountings I carry pins IS on which supports I5 are journaled and supports I5 have therein extension tubes 15 which together with pins IS on which 5 they are journaled extend down into forms I! which latter are secured upon supports l5 as by ferrules l8, the forms I! adjacent their lower ends being secured on the lower ends of tubes I5 which are journaled on the lower ends of pins 10 I6. Pins l6 and extension tubes l5 afford a strong structure supporting the forms I! which usually are of glass, whereby the forms are effectively adapted for the bead-rolling apparatus to be described. 15

It will be understood that the forms I! are caused by travel of belt I!) to go through the various dipping and drying stations until they pass to the bead-rolling apparatus herein shown at which they arrive usually depending vertically 0 downwardly from the belt Ill. The belt II) for apparatus for making prophylactic rubber articles of latex may travel at a rate of 12 feet per minute. 7 The bead-rolling apparatus comprises two roll- 25 ers 20, 20 arranged along opposite sides of belt Ill and onto which the forms may be swung by rails 2|, 2| engaging roller portions I5 15 of form supports l5. The rollers 20 preferably have a cushioning tube 22 of material such as sponge rubber or printers compound thereon over which may be applied a layer 23 of chamois or the like. For many years beads were rolled by hand and the material of these rollers approximates the softness of the fingers and gives a corresponding rubbing action desirable to the operation of a bead roller of the type herein described. The forms are arranged to be swung upwardly and outwardly by rails 2| and to be gently laid upon bead rollers 20 upon which they rest by gravity. Rollers 20 preferably support the forms substantially horizontally whereby the maximum weight of the forms and their mountings holds the forms under pressure against the bead rollers 20. This pressure may be varied by varying the height of the bead rollers relative to belt It) so that the forms rest thereon at various angles or by supplementing the pressure due to their weightby springs or pressure rails or other means.

Bead rollers 2|! are set at an angle such that at the entering end the forms I! are contacted inwardly of the line to which the forms were dipped and at the exit end the forms are contacted to the required distance outwardly along the forms to roll the beads on the goods so as to produce reinforced goods of predetermined length. This will be understood by skilled artisans.

The rollers 20 are preferably quite long (in a prophylactic machine as long as six feet) and are preferably rotated slowly (in a prophylactic machine with a surface speed of about 20 feet per minute) and the forms are caused to rotate about their own axes while resting on bead rollers 20 whereby the action of the bead rollers on the rubber deposits on the forms is substantially longitudinally of the forms at such a slight angle and at such relatively low speeds as to avoid setting up a twist in the beads or picking up or tearing the deposited rubber, even under varying atmospheric conditions.

By revolving the forms by contact with the bead rollers by urging the rotatable forms against the bead rollers under pressure, while traveling along in the machine, the use of a form-revolving mechanism as heretofore required is obviated and the rotation of the form is the natural rotation on the bead roller due to contact therewith with but slight relative movement at the point of contact of the form which results in greater smoothness and uniformity in the beads.

At the exit end of the bead-roller rails 24, 24 are arranged to lower the forms back to the Vertlcal positions in which they normally depend from belt l0 ready to pass through final drier, vulcanizer, stripping station, etc., as will be understood.

The bead rollers 20 may be driven by chain and sprocket means 25, 25 driven by motors 26, 26.

Modifications of the invention may be resorted to without departing from the spirit thereof or the scope of the appended claims.

What is claimed is:

1. In combination, a conveyer having formmountings hinged thereon, form supports rotatably supported on said mountings, forms carried by said form supports, a bead roller at a side of said conveyor, and means for lifting the forms onto said bead-roller whereby they may roll along on the bead-roller during travel of the conveyer and means for lowering the forms off the bead-roller, said bead-roller being soarranged with respect to said conveyor that the forms are carried by the conveyor into engagement with said roller so as to be solely rotated by contact with the roller as the forms are translated with respect to the roller by the conveyor.

2. In combination, a conveyer having formm'ountings hinged thereon, form supports rotatably supported on said mountings, forms carried by said form supports, a bead roller at a side of said conveyer, and means for lifting the forms onto said bead-roller whereby they may roll along on the bead-roller during travel of the conveyer, said bead-roller being so arranged with respect to said conveyor that the forms are carried by the conveyor into engagement with said roller so as to be solely rotated by contact with the roller as the forms are translated with respect to the roller by the conveyor.

3.'The combination in apparatus for making deposited rubber goods of a conveyor having rotatable forms thereon, a rotatable roller associated with the conveyor so as to extend longitudinally thereof at an angle, and means for bringing said forms in succession onto said roller to be supported thereby and to translate said forms along the roller in contact therewith whereby the forms are caused to rotate on the roller solely by contact therewith during such translatory movement, said roller being adapted for progressively rolling deposited rubber on the forms upon itself to form beads on such rubber goods.

4. The combination in apparatus for making deposited rubber goods of a conveyor having rotatable forms thereon, a rotatable roller associated with the conveyor so as to extend longitudinally thereof at an angle, and means for bringing said forms in succession onto said roller under yielding pressure to be supported by said roller and to translate said forms along the roller in contact therewith whereby the forms are caused to rotate on the roller solely by contact therewith during such translatory movement, said roller being adapted for progressively rolling deposited rubber on the forms upon itself to form beads on such rubber goods.

5. The combination in apparatus for making deposited rubber goods of a conveyor having rotatable forms thereon, a rotatable roller associated with the conveyor so as to extend longitudinally thereof at an angle, and means for bringing said forms in succession into contact with said roller and to translate said forms along the roller in contact therewith whereby the forms are caused to rotate on the roller by contact therewith during such translatory movement, said roller being adapted for progressively rolling deposited rubber on the forms upon itself to form beads on such rubber goods, said roller being so arranged with respect to said conveyor that the forms are carried by the conveyor into engagement with said roller so as to be solely rotated by'contact with the roller as the forms are translated with respect to the roller by the conveyor.

6. The combination in apparatus for making deposited rubber goods of a conveyor having rotatable forms thereon, a rotatable roller associated with the conveyor so as to extend longiv tudinally thereof at an angle, and means for bringing said forms in succession into contact with said roller under yielding pressure and to translate said forms along the roller in contact therewith whereby the forms are caused to rotate on the roller by contact therewith during JOHN R. GAMMETER.

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