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Publication numberUS1889475 A
Publication typeGrant
Publication dateNov 29, 1932
Filing dateJan 18, 1932
Priority dateJan 18, 1932
Publication numberUS 1889475 A, US 1889475A, US-A-1889475, US1889475 A, US1889475A
InventorsAugust Henkel
Original AssigneeAugust Henkel
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1889475 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Nov. 29, 1932. A. HENKEL 1,889,475

TWEEZERS Filed Jan. 18, 1932 Patented Nov. 29, 1932 AUGUST HENKEL, F KEENE, NEW HAMPSHIRE TWEEZERS Application led January 18, 1932. Serial No. 587,408.

This invention relates to an improvement in tweezers which are commonly used by manicurists, dentists, surgeons and the like.

It is old to attach a pin to the interior surface of one of the jaws and thus provide a stop so that the jaws will not come together too tightly when pressure is applied. This construction is subject to a serious disadvantage, namely, the tendency of the points of the jaws to spread apart when pressure is applied. This spreading of the points is due to the fact that pressure, if not applied directly perpendicular to the surfaces of the jaws, will tend to shift the jaws laterally and so the points will spread and become out of alignment.

There has also been provided, in addition to the stop pin on the interior surface of one jaw, a recesson the interior surface ofthe other jaw so positioned that the pin will enter the recess when the. jaws are pressed together.

This improvement tends to prevent the lateral shifting ofthe jaws, but it does not entirely prevent thel spreading of the points. kOne 5 reason for this defect is clearly seen when one considers the small bearing surface afforded by the stop pin. If pressure is not applied directly over the stop pin, there is a tendency for the jaws to be tilted from their normal horizontal plane and so the points may not meet directly and they will spread and pass each other when such pressure is applied.

The object of Vthis invention is to obviate Y the above-mentioned disadvantages by pro- 5 viding in place of the stop pin, a bar which extends the entire width of one jaw. By such an arrangement the pressure will be evenly distributed over the enti-re bearing surface afforded by t-he stop bar. Y

In the drawing Figure l is a perspective view of a pair of tweezers embodying the invention Fig. 2 is a side elevation thereof, and Fig. 3 is a plan of one of the jaws of the tweezers. v

The tweezers comprise a pairl of spring jaws l, l which are attached at one end 2. The other ends 3, 3 may be in the form of straight edges, points, or other suitable arrangements. These ends 3, 3 are normally held apart by the spring action of the jaws.

Upon the exterior surface of each jaw l there is a roughened surface 4, which permits a firm hold to be had on the jaws to facilitate pressing the same together.

On the interior surface of either jaw is. provvided a bar 5. This bar extends the entire width of the jaw to which it is attached.

l/Vhen the jaws are pressed together, it will be seen that the bar 5 serves as a stop to pre- 6o vent the points from coming together too tightly. This stop bar 5 provides a bearing surface o-ver the entire width of said jaws and it will thus be seen that the pressure applied is evenly distributed so that the jaws cannot e5 tilt and so become bent, and therefore the points will not spread apart.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

Tweezers comprising opening and closing spring jaws, and a stop bar on the interior surface of one of said jaws extending substantially the entire width thereof whereby to prevent the jaws from tilting and the points fion spreading apart when pressure is app 1e In testimony whereof, I aix my signature.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2595683 *Nov 15, 1948May 6, 1952Lo Monte Charles JTweezer
US3265068 *Aug 24, 1962Aug 9, 1966American Hospital Supply CorpPlastic forceps
US3306139 *Sep 13, 1965Feb 28, 1967Brackett Robert WTweezer construction
US3653389 *Jan 19, 1970Apr 4, 1972Amp IncDisposable forceps
US3980861 *Feb 4, 1974Sep 14, 1976Akio FukunagaElectrically heated miniature thermal implement
US4221414 *Sep 27, 1978Sep 9, 1980Bausch & Lomb IncorporatedContact lens insertion and removal device
US4461297 *Mar 18, 1982Jul 24, 1984Holzhaur und Sutter Medizin-technische Gerate und Instrumente GmbHForceps
US4541428 *Feb 22, 1983Sep 17, 1985Hans ScherrerCuticle cutting tweezers with progressive cutting edge engagement
US4698051 *Jul 14, 1986Oct 6, 1987Jacobson Ralph SPlastic bag opening device
US5263754 *Apr 21, 1992Nov 23, 1993Coleman Kenneth JBarbed tweezers with magnifying glass
US6276734 *Feb 4, 2000Aug 21, 2001Rory F. KriegerUtilitarian combination utensil
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US8057509May 19, 2008Nov 15, 2011Goody Products, Inc.Multi-tool tweezer
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US9402636Dec 8, 2014Aug 2, 2016Howmedica Osteonics Corp.Cutting guide with internal distraction
US20040051327 *Jan 7, 2002Mar 18, 2004Suk-Soo YoonChoptstick of the pincers type
US20080015603 *Jun 30, 2006Jan 17, 2008Howmedica Osteonics Corp.High tibial osteotomy system
US20080015605 *Jul 3, 2006Jan 17, 2008Howmedica Osteonics Corp.High tibial osteotomy guide
US20080157550 *Oct 30, 2007Jul 3, 2008Patrick BurgessMulti-tool tweezer
US20080262500 *Apr 19, 2007Oct 23, 2008Howmedica Osteonics Corp.Cutting guide with internal distraction
US20150181999 *Jan 2, 2014Jul 2, 2015Oliver AlbersEyebrow tool with integrated tweezers
USD749729Oct 8, 2014Feb 16, 2016Cool Renewal, LLCSkin tag tweezer
DE10155585A1 *Nov 13, 2001Jun 26, 2003Aesculap Ag & Co KgSurgical forceps with grip faces use lengthways adjusting spacer between proximal ends to vary convergence of grip faces or limit these to suit duty.
DE10155585B4 *Nov 13, 2001Sep 2, 2010Aesculap AgPinzette
EP0151901A1 *Feb 15, 1984Aug 21, 1985Caremi, CarloDepilatory tweezers
EP2713911A4 *May 24, 2012Jun 3, 2015Derm Instr & Innovations LlcSkin removal instrument
U.S. Classification294/99.2, 606/210
International ClassificationA61B17/30
Cooperative ClassificationA61B17/30
European ClassificationA61B17/30