US2457349A - Manufacture of pessaries - Google Patents

Manufacture of pessaries Download PDF

Info

Publication number
US2457349A
US2457349A US70056746A US2457349A US 2457349 A US2457349 A US 2457349A US 70056746 A US70056746 A US 70056746A US 2457349 A US2457349 A US 2457349A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
coating
form
core
band
end
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
Inventor
Joseph F Clark
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.)
Durex Products Inc
Original Assignee
Durex Products Inc
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
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F6/00Contraceptive devices; Pessaries; Applicators therefor
    • A61F6/06Contraceptive devices; Pessaries; Applicators therefor for use by females
    • A61F6/08Pessaries, i.e. devices worn in the vagina to support the uterus, remedy a malposition or prevent conception, e.g. combined with devices protecting against contagion
    • 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
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1002Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1028Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina by bending, drawing or stretch forming sheet to assume shape of configured lamina while in contact therewith
    • Y10T156/103Encasing or enveloping the configured lamina

Description

J. F. ,CLARK MANUFACTURE oF PESSARIESv Filed oct. 1, 1946 Dec. Z0, E948.

Patented Dec. 28, 1948 2,457,349 MANUFACTURE or PEssARIEs Joseph F. Clark, Paterson, N. J., assignor, by

direct and mesne assignments, to Durex Products, Inc., New York, N. Y., a corporation of New York Application october 1, 1946, serial No. 700,567

3 Claims. 1

What is known in the surgical art as a pessary is a dome-shaped appliance composed of some quite thin elastic flexible material, as latex, which provides the dome, and an annular flexible reinforcing core which goes to form a cushionlike outer rim at the margin of the dome. A cylindrical form having a semi-spherical end being provided, a latex coating is rst deposited, as by dipping, on all that exterior surface of the form which includes said end and the cylindrical part of the form thereto adjoining; anendless flexible elastic core is then positioned in embracing relation to said part and in contact with the margin of the coating remote from said end; and

While the coating still remains tacky the core is rolled, continuously of itself, toward said end and meanwhile the coating is wrapped around the core continuously thereof, such rolling and wrapping being continued until the coreis completely wrapped and has reached the base of the domeshaped part of the coating to form the mentioned rim of the appliance.

It is desirable to impart to the rim a color in contrast to the dome portion of the appliance. In order to accomplish this result it has been proposed to apply color to the coating before the rolling and wrapping steps are performed. But, since the coating, at least at its outer surface, has not yet passed completely to its solid state, the color tends to run or become dispersed uncontrollably in the coating, and this condition is so augmented when the rolling and Wrapping are performed that the color ultimately appears more or less in the dome portion of the appliance, near the rim, instead of being conned wholly to the rim, as intended.

I have overcome this fault, as considerable practice has shown, producing an appliance of the character set forth in which the rim, alone, is distinctively colored. To this end, instead of applying color directly to the coating, I pre-color latex in liquid state and apply such latex in the form of a band to the coating, so that in the Wrapping of the coating said band Will become immured therein. The latex being transparent or at least translucent, the color of the band is apparent in the resulting rim. There is no dispersion of the color to the dome-shaped portion of the appliance. I account for this on the theory that when the colored material to form the band is applied to the coating it is in liquid state, whereas the coating itself, while still tacky, is more or less in solid form, wherefore the color cannot run from the (liquid) band to the (solid) coating. Of course, when the rollingand' wrapping are done the band has set or become more or less solid, thus preventing its dispersion as an incident of the wrapping.

I explain my novel method as follows, havingy Fig. 4 showing the assembly of Fig. '3 with the` mentioned band applied thereto;

Fig. 5 showing the core rolled to its final position; and

Fig. 6 showing the spring of the core before application of the core-coating thereto, partly in full lines and partly in dotted outline and being of dimensions suitable to some actual size of the appliance.

Let l be a generally cylindrical form or moldf having a semi-spherical or dome-shaped end lq., 2 in Figs. l to 3 is the mentioned core. This includes, with the elastic metal coil or spiral spring 3 Whose ends have been joined in any way (not here material) to form the spring annular, some form of core-coating.v This core-coating may be a preformed latex tube slipped over thev spring before it is formed annular or by dipping the spring in liquid latex, either of which is ac-t cording to the usual practice and requires no i1 lustration herein.

Describing the conventional operation Aof forming the appliance regardless of the step by which its rim becomes colored:

The form, inverted, is dipped and thus coated, as at 4, with a thin layer of latex so that the margin 4a of the coating is appreciably further from the base of the semi-spherical dome-end than will be the rim of the ultimate appliance. Whereas the core may conceivably be placed in embracing relation to the form after the latex is applied to the form, as a matter of facility it preferably is so placed before such application of the latex, as shown in Fig. 1. In any case, when the latex coating 4 has suciently set so as to have passed from the liquid to a more or less solid state but is still tacky or adhesiveassumed to be the condition of Fig. 2-the core is rolled on the form toward its dome-shaped end until it contacts (Fig. 3) the margin 4a of coating 4 continuously and its core-coating therefore adheres to such margin. Then the rolling of the core is continued until it assumes the elevation shown by Fig. 5, i. e., its ultimate position in the completely formed appliance.` In this step of the procedure, because coating 4 is still tacky and it initially adheres to the core, it undergoes Wrapping or winding around the core and adheres thereto and its convolutions (usually more than one are formed) adhere to each other, forming on the dome-shaped product a of Fig. 5 a marginal annular cushioning rim b providing a convoluted tubular cushion.

By a brush and, say while the core is in the position of Fig. 3, I apply a thin band 5 of liquid latex, suitably previously colored, to the coating 4 and which band is preferably spaced from the core and from the base of what is to be the domeshaped portion of the ultimate appliance. This is of course done while the coating still remains tacky. Then, while thislatter condition remains and when the coating has set to substantially solid state, the rolling of the core and wrapping thereon of the coating A around the core is continued until the latter attains the position of Fig, 5, the band 5 as an incident of this rolling and Wrapping being finally immured in the wrapped coating. The product is the appliance shown at a-b in Fig. 5, in which a is the domeshaped portion thereof and b is the marginal outer rim therefor, the latter appearing distinctively colored by the band as an incident of the at least translucent nature of the coating.

After the rim has been formed the appliance is vulcanized. When it is removed from the form it has the shape shown by Fig. 5f.

Having thus fully described by invention what Iclaim is:

1. In the forming of an appliance of the class set -forth on a cylindrical form having a substantially semi-spherical end, the method which consists in depositing on all the exterior surface of the form which includes said end and the cylindrical part of the form thereto adjoining a coating of liquid latex which is at least translucent, positioning, in embracing relation to said part and in contact with the margin of the coating remote from said end and while the coating still remains tacky, an endless exible elastic core, depositing on the coating, between said core and end vandremotefrom the latter, a band of colored latex in liquid state, and, `when said band has assumed substantially solid state and said coating still remains tacky, rolling the core continuously of itself toward said end and meanwhile wrapping the coating around the core continuously thereof, and continuing' such rolling and wrapping while the coating still remains tacky and until the portion of the coating which wraps the core contacts that portion of the coating which is between the band and said end of the form.

2. The method of manufacturing a pessary oi the character set forth which comprises, placing a resilient ring in embracing engagement intermediate the ends of an elongate cylindrical form having a semi-spherical end, forming a transparent diaphragm by dipping the semi-spherical end of the form in a suitable solution of liquid latex to a depth slightly spaced from the ring, removing the coated form from the solution, partially setting the coating until the same is tacky, applying a suitable solution of colored liquid latex in the form of a band of predetermined width at a point spaced inwardly from the end edge of the coating While the latter is still tacky, rolling the resilient ring upon the form in a direction toward the semi-spherical end thereof with the ring in contact with the tacky end edge of the coating, continuing the rolling ofthe ring and coating until the ring and colored band are completely wrapped about and covered with the tacky coating, curing the so formed pessary, and then removing the pessary from the form.

3. The method of manufacturing a pessaryof the character set forth which comprises the iollowing steps in the order named: providing an elongate cylindrical form having a semi-spherical end, forming a transparent diaphragm by dipping the semi-spherical end of the form in a suitablesolution of liquid latex to a predetermined depth, removing the coated form from the solution, partially setting the coating until the same is tacky, applying a suitable solution of colored with the ring in contact with the tacky end edge of the coating, continuing the rolling of the ring and coating until the ring and colored band are completely Wrapped about and covered with the tacky coating, curing the so formed pessary, and then removing the pessary from the form.

- JOSEPH F, CLARK.

REFERENCES CITED The following references are of record in th file of this patent:

UNITED STATES PATENTS Number Name Date 2,371,883 Gammeter et al. Mar. 20, 1945 2,024,539 Schmid Dec. 17,1935

US2457349A 1946-10-01 1946-10-01 Manufacture of pessaries Expired - Lifetime US2457349A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US2457349A US2457349A (en) 1946-10-01 1946-10-01 Manufacture of pessaries

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2457349A US2457349A (en) 1946-10-01 1946-10-01 Manufacture of pessaries

Publications (1)

Publication Number Publication Date
US2457349A true US2457349A (en) 1948-12-28

Family

ID=24814007

Family Applications (1)

Application Number Title Priority Date Filing Date
US2457349A Expired - Lifetime US2457349A (en) 1946-10-01 1946-10-01 Manufacture of pessaries

Country Status (1)

Country Link
US (1) US2457349A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8926493B2 (en) 2011-04-11 2015-01-06 The Procter & Gamble Company Pessary device
US9078726B2 (en) 2011-04-11 2015-07-14 The Procter & Gamble Company Pessary device with longitudinal flexibility
US9744630B2 (en) 2012-06-29 2017-08-29 The Procter & Gamble Company Method of conforming an overwrap to a pessary device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2024539A (en) * 1931-12-17 1935-12-17 Schmid Inc Julius Pessary
US2371883A (en) * 1943-11-06 1945-03-20 Gammeter Dipped synthetic rubber article and method of making

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2024539A (en) * 1931-12-17 1935-12-17 Schmid Inc Julius Pessary
US2371883A (en) * 1943-11-06 1945-03-20 Gammeter Dipped synthetic rubber article and method of making

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8926493B2 (en) 2011-04-11 2015-01-06 The Procter & Gamble Company Pessary device
US9078726B2 (en) 2011-04-11 2015-07-14 The Procter & Gamble Company Pessary device with longitudinal flexibility
US9393090B2 (en) 2011-04-11 2016-07-19 The Procter & Gamble Company Pessary device with longitudinal flexibility
US9744630B2 (en) 2012-06-29 2017-08-29 The Procter & Gamble Company Method of conforming an overwrap to a pessary device

Similar Documents

Publication Publication Date Title
US720852A (en) Golf-ball.
US3131241A (en) Method for making an improved ear plug
US3226255A (en) Masking method for semiconductor
US5730665A (en) Golf ball and method of making same
US3857745A (en) Method of covering articles with leather
US3132761A (en) Container for storing fluid medium under high pressure
US2131756A (en) Rubber ball
US1865097A (en) Molding process
US2533731A (en) Bobbin for knitting yarn and the like
US2158044A (en) Method of making contactor bases for electric lamps, tubes, and the like
US2525070A (en) Method of manufacturing high-heat resistant ducts
US2181350A (en) Golf ball
US2321064A (en) Flexible tubing
US2421099A (en) Recapping of tires
US1937468A (en) Wrapped article and method
US2670736A (en) Tubular supporting member
US2188591A (en) Audiphone earpiece
US2481488A (en) Method of making inflatable catheters having preformed balloon sacs
US2341583A (en) Luminescent or phosphorescent coating material
US1255388A (en) Golf-ball.
US1412309A (en) Method of manufacturing stretchless belting
US2194132A (en) Reinforced ball and method of making same
US1867723A (en) Convoluted spring
US2666208A (en) Prosthetic stocking
US2623747A (en) Inflatable athletic ball and method of making