Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS932911 A
Publication typeGrant
Publication dateAug 31, 1909
Filing dateFeb 5, 1909
Priority dateFeb 5, 1909
Publication numberUS 932911 A, US 932911A, US-A-932911, US932911 A, US932911A
InventorsBenjamin F Shibe
Original AssigneeBenjamin F Shibe
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 932911 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)




Patented Aug. 31, 1909.



e or BALarEnNsYLvamA. v v


Specification of Letters Patent. PatentedAug'. 3 1, 1909.

Application filed February 5, 1909. Serial No. 476,289.

To all whom it may concern:

Be it known that I, BENJAMIN F. SHIBE,

a citizen of the United States, residing at.

Bala, in the county of Montgomery and State of Pennsylvania, have invented anew and useful Improvement in Base-Balls, of which the following is a specificat'on."

, My invention relates to playingballs, and pertains more particularly to base balls in which the center is formed of aresilient sphere, upon which the ball is constructed to the desired diameter of yarn or other thread tightly wound thereon and secured by a .binder of adhesive plastic composition upon its surface adjacent to the outer cover of horse hide or similar material.

As heretofore constructed, the central resilient sphere or core of base balls has been formed of solid india-rubber, having layers of yarn wound thereon.

The object of my invention is to produce a playing ball of said class having a resilient central core that is less yielding than rubber upon which the layers of yarn may be wound under greater tension, whereby greater compactness results, perfect concentric formation is attained and a more durable and rigid structure secured and uniform resiliency acquired and maintained.

A further object of my invention is to provide a central spherical core of cork or similar material which maybe incased in a layer of strands of soft india-rubber wound" thereon under tension whereby the resiliency thereof may be regulated, and the saidla-yerssection of a base ball embodying my inven-' tion, and Fig. 2 isa sectional View of the central core. l

Referring now to the drawings, 1-designates'my central spherical core, which comprises a center of cork 2 or similar material that is less yielding than rubber. Upon said center, layers of resilient soft india-rubber strands 3 are wound, in the winding'of which *the tension may be regulated to modify the degree of resiliency of the core and ball; For the purpose of more rigidly securing said layers of soft rubber uponthe center 2 and overcoming any tendency thereof to draw irregularly thereupon, I subject them to the ordinary hardening or vulcanizing treatment under twenty-five pounds steam pressure or approximately 264 degrees Fahrenheit for a period of approximately forty-five minutes, whereby the said strands retain their resiliency and degree of coin-- pactness imparted by the tension, and are stiffened andset against displacement and irregular tightening upon the center, Upon said central sphere is tightly wound a layer of'yarn or other thread 4, which is held in its spherical contour by a layer of adhesive plastic composition 5 and the whole structure is incased in an outer cover 6, preferably of horse hide stitched thereon.

From the foregoingdescription, it will be apparent that a much more rigid construction of the entire ball willresult from the more rigid core and the greater tension and morecompact winding of the layers of v thread wound thereon, and that the resili-' ,v ency of the central core'may be modified by the regulation of the tension of the rubber strands covering the cork center, and. fur- 5' thermore, that the preferred degree of resili- -ency thus acquired may be maintained by the hardening of the layer'of rubberupon the cork center.

Having thus described I claim as new and desire to be secured by v -Letters Patent, is I 1. A base ball comprising a spherical center of cork, layers of resilient hard rubber Strands thereon, layers of thread wound 95 upon said layers, and an outer-cover incasing same, substantially as described.

2. A-baseball comprising a spherical con 1 ter of cork, adherent-layersof resilient hard rubber strands thereon, layers of .thread 00- my invention, what '90 l In testimony whereof, I have hereunto wound upon said layers, and an outer cover signed my name to this specification in the :incasin same, substantially as described.

3. A ase ball comprising a spherical cenpresence of two subscribing witnesses.

ter of cork, resilient hard rubber thereon, I BENJAMIN F. SHIBE. 5 layers of thread wound upon said layers, Witnesses:

and an outer cover incasing same, substan- ALMIRA B. MAGBETH,

tiallyuas described. ELSIE J. M01112.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US20050143205 *Dec 29, 2003Jun 30, 2005Yang Wen H.Softball with great resilient coefficient
Cooperative ClassificationY10S273/15, A63B37/00