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Publication numberUS525845 A
Publication typeGrant
Publication dateSep 11, 1894
Filing dateMar 5, 1894
Publication numberUS 525845 A, US 525845A, US-A-525845, US525845 A, US525845A
InventorsRiley P. Hobbs
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Riley p
US 525845 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)



No. 525,845. Patented Sept. 11, 1894.



SPECIFICATION forming part of Letters Patent No. 525,845, dated September 11, 1894.

Application filed March 5, 1894. Serial No. 502,469. (No model.)

To all whom it may concern.-

Be it known that I, RILEY P. Homes, of Indianapolis, county of Marion, and State of Indiana, have invented certain new and useful Improvements in Capsules; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing, in which like letters and figures refer to like parts.

My invention relates to improvements in capsules, the chief object being the production of capsules which can be readily joined, by machinery if desired, and when joined there will be a lock fit between the cap and the body of the capsule, which will prevent the cap from rebounding during the joining and prevent its escape after joining without a considerable pull on it, and which will render the capsule air and fluid tight.

The figure is a longitudinal section of the body and cap of my capsule, shown herein of a large size for the purpose of defining the form more clearly.

The body of the capsule is made in the ordinary form heretofore adopted, but can be made in any well known form. The form shown is one provided with a semi circular end 4, and whose diameter gradually increases from the point 5 near the closed end 4 to the open end of the capsule, at ac;c-. I make no claim to any invention so far as the form of the body is concerned, but my invention relates to the form of the cap. The closed end 10 of the cap, as shown, is substantially semi circular, but may be in any other form. The essential feature of my invention consists in contracting the diameter of the cap between its two ends, as will hereinafter appear more fully. The open end y-y of the cap is made sufliciently large to readily slip over the open end a=-m of the body. From yy to the point 7 the diameter of the cap decreases; from the point y-y to the point 8 the form is substantially that of an ogee. The inner diameter of the cap at 7 is substantially the same as the outer diameter of the mouth of the body at a:0c, so that when the cap is inserted over the body it will fit snugly when the mouth of the body has reached the point 7 of the cap. Between the points 7 and 9 of the cap the diameter is contracted, the smallest diameter being at the point 8. The amount of contraction of the diameter at the point 8 is preferably about two thousandths of an inch, in the usual sized capsule. The form between the points 7 and 9 should be such that the contracted portion would be wide enough to furnish considerable bearing surface. When the cap is being placed over the body after the point 7 has reached the mouth of the body oooc, because the diameter of the cap at 8 is less than the diameter of the body at 00-00, the mouth of the body will be slightly contracted as it is pushed in by the point 8, and the cap at the point 8 will be slightly enlarged, so that there will be an exceedingly tight fit between the body and the cap, at the point 8 of the cap. After the mouth of the body has passed the point 8, because of the inclined form of the body, it will quickly spring into the cap until the mouth of the body at mac contacts with the end 10 of the cap some distance beyond the point 9. Thus the end of the body will contact with the curved end of the cap and the contracted portion of the cap will bind tightly about the body of the capsule, and thus the cap will be held very firmly on the body and cannot be withdrawn without a considerable pull. The mouth of the body will always necessarily contact with the closed end of the cap, whereby the jointed or filled capsules will always be of the same length, not only giving them a uniform appearance, but assisting in counting them, which is done by measurement. For the above reasons these capsules will be of uniform size, hence every one will hold the same amount of medicine, which is an important requisite in a capsule. The form of the cap form -y to 8 is substantially of an ogee, and this shape of the mouth of the cap permits the body to get well into the cap before it begins to encounter the contracted portion of the cap, so that the body cannot escape during the first part of the process of joining.

,What I claim as my invention, and desire 5 to secure by Letters Patent, is-

1. A capsule comprising a body, and a cap slightly contracted between its ends, substantially as shown and described.

2 A capsule comprising a body, and a cap 10 whose form near its mouth is substantially an ogee shape and whose diameter is less near the closed end of the cap than it is at the closed end or at the mouth, substantially as shown and described.

In witness whereof I have hereunto set my hand this 20th day of February, 1894.

RILEY P. HOBBS. Witnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3173840 *Apr 30, 1962Mar 16, 1965Lilly Co EliSeparation-resistant capsule
US3258115 *May 12, 1965Jun 28, 1966Scherer Corp R PTwo-piece hard gelatin capsule
US3285408 *Oct 16, 1964Nov 15, 1966Lilly Co EliCapsule with integral locking band
US3399803 *Oct 11, 1966Sep 3, 1968Parke Davis & CoSelf-locking medicament capsule
US3823843 *Oct 26, 1972Jul 16, 1974Lilly Co EliLocking capsule
US4040536 *May 5, 1975Aug 9, 1977R. P. Scherer CorporationLocking hard gelatin capsule
US4247006 *Jul 16, 1979Jan 27, 1981Capsugel AgCapsule body, in particular for use with a joined capsule for a pharmaceutical preparation, and method of and apparatus for producing it
US6360886Mar 13, 2000Mar 26, 2002Kerr CorporationCapsule for use in preparing a dental amalgam
US6439380Oct 10, 2001Aug 27, 2002Kerr CorporationCapsule for use in preparing a dental amalgam
US8790692Sep 8, 2010Jul 29, 2014Patheon Pharmaceuticals Inc.Break resistant gel capsule
US20110097397 *Sep 8, 2010Apr 28, 2011Patheon PharmaceuticalsBreak resistant gel capsule
DE1536219B1 *Nov 30, 1966Jun 24, 1971Parke Davis & CoKapseln fuer Arzneimittel
WO1983000477A1 *Jul 30, 1981Feb 17, 1983Scherer Corp R PTwo-piece hardshell gelatin capsule and method for manufacture
Cooperative ClassificationB65D75/327, Y10S220/34