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 numberUS610530 A
Publication typeGrant
Publication dateSep 13, 1898
Filing dateDec 29, 1897
Publication numberUS 610530 A, US 610530A, US-A-610530, US610530 A, US610530A
InventorsErnst Iiammesfahr
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Ernst iiammesfahr
US 610530 A
Previous page
Next page
Description  (OCR text may contain errors)

No. 6|0.530. Ptenied' Sept. I3, |898.


(Applica'ton filed Dec. 29, 1897.)




SPECIFICATION forming part of Letters Patent No. 610,530, dated September 13, 1898.

Application filed December 29, 1897. Serial No. 664,300. (No model.)

To @ZZ whom t may concern:

Be it known that I, ERNST HAMMESFAHR, manufacturer, a subject of the King of Prussia, German Emperor, residing at Foche, near Solingen, in the Kingdom of Prussia, German Empire, have invented certain new and useful Improvements in Pocket-Corkscrews, of which the following is a full description.

This invention relates toa pocket-corkscrew in which the corkscrew proper can, in consequence of a peculiar arrangement, be made considerably larger and stronger than pocketcorkscrews of known construction. In addition the new pocket-corkscrew admits of being very readily opened, while there is also the further advantage that when opened the corkscrew is held in a very secure manner.

One arrangement in which the new corkscrew is arranged on a pocket-knife or is combined with the same is illustrated inthe drawings. Before proceeding to describe the details of this arrangement I shall first state generally, relatively to the peculiar features of the general construction, that in contradistinction to the older corkscrews Vthe corkscrew proper in this case is not mounted directly on the handle of the knife, but is connected therewith through the medium of a separate intermediate part. The corkscrew proper is pivoted to the said intermediate part and the latter is pivoted to the handle, the hinges or pivots being so arranged that the movement of the intermediate part takes place in one plane of the handle and the movement of the corkscrew proper on the intermediate part takes place in a plane of the latter. In the arrangement shown the two axes of rotation are situated at ninety degrecs to each other, and the corkscrew proper, in passing from the, closed position into the open position, assumes an intermediate position in which it is turned one hundred and eighty degrees from the closed position, as will be hereinafter more particularly described.

I now refer to the accompanying drawings, in which similar letters denote similar parts throughout the several views, and in which- Figure I is a side view of a pocket-knife provided with my improved corkscrew. Fig.

21 is a back view of said knife. Fig. 3 shows the corkscrew turned for ninety degrees. Fig.

4 shows thecorkscrew turned for one hundred and eighty degrees; and Fig. 5 is a view similar to Fig. 1, the corkscrew being, however, in its proper working position.

In Figs. l to 5, a is the corkscrew proper, which is pivoted at b, Figs. 2 to 4, to the intermediate part c, Figs. l, 3, and 5. intermediate part is itself pivoted at d, Figs. l and 5, to the handle e, lwhich is formed in the case shown by the shell of a pocket-knife. When the corkscrew shall be used, the screw proper, a, is turned upon or around its pivot 1J, so as to assume the first intermediate position (shown in Fig. 3) and then the second intermediate position. (Shown in Fig. 4E.) When the corkscrew has reached this intermediate position, it moves, together with the intermediate part c, around the pivot d of the latter, and thus the parts assume the position shown in Fig. 5. This operation is of course reversed in order to close the corkscrew.

In the arrangement shown the handle or shell e is provided approximately at its middle with the projections e. These projections hold the pivot-pin d of the intermediate part c. Not only the intermediate part c, but also the corresponding end of the corkscrew o, when the latter is in the open position, engages between the two projections e', whereby, obviously, all rotation of the corkscrew about the pin b is prevented. Rotation of the parts a and c together about the pin d is prevented by the springs of the knife-blades. These springs are so mounted that in the centerthat is to say, underneath the pivot-pin cZ-they are yielding, while they are placed in tension in the movement or passage of the intermediate part c from the position of rest into the operative position, and vice versa. This tension of the springs, which is produced during the movement of the part c, acts most efficiently to prevent all impropervmovement of the said part c.

For the corkscrew c there are further arranged two stops @2 c3, of which one is operative when the corkscrew is in its position of rest, Figs. l and 2, whereas the other stop e3 holds the corkscrew fast in the position This IOO

. Fig. 4, in which it is to be moved into the upzo being in the form of a stein lying alongside the stem of the Corkscrew substantially as described.

In testimony whereof I have hereunto set my hand, at Barmen, Germany, this 14th day of December, 1897, in the presence of two I5 subscribing Witnesses. ERNST HAMMESFAHR. Vitnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7182001 *Jan 30, 2002Feb 27, 2007Leatherman Tool Group, Inc.Tool frame member including spring
US7337486Apr 25, 2006Mar 4, 2008Leatherman Tool Group, Inc.Hand tool
US7406896Feb 22, 2007Aug 5, 2008Leatherman Tool Group, Inc.Tool frame member including spring
US7712399Oct 5, 2007May 11, 2010Leatherman Tool Group, Inc.Tool and associated bit driver
US7913591Jan 10, 2007Mar 29, 2011Leatherman Tool Group, Inc.Multipurpose tool
US8635780 *Jun 17, 2013Jan 28, 2014Abdulqader Habeeb Hussain AbulUtensil attachments for portable knife assembly
Cooperative ClassificationB67B7/44