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 numberUS1250328 A
Publication typeGrant
Publication dateDec 18, 1917
Filing dateFeb 14, 1917
Priority dateFeb 14, 1917
Publication numberUS 1250328 A, US 1250328A, US-A-1250328, US1250328 A, US1250328A
InventorsEdwin L Langford
Original AssigneeEdwin L Langford
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1250328 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)




Patented Dec. f8, 1917.

Chroma Enwm 1.. moron, or Hermann, NEW msnr.

Application filed February 14, 1917. Serial No. 148,482.

To all whom it may concern: I

Be it known that I, EDWIN L. LANGFOR a citizen of the United States, residing at Haledon, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Combination-Tools, of which the followingjisa specification, reference being had there to theaccompanying drawing.

This ion relates to hand toolsand more particularly to screw-drivers, although not necessarily limited to that exact. form of tool. g

Its object is to provide a compact combination tool, of the general typeof a screwdriver, which can be carried in the pocket.

- and which comprises two or more tools of different sizes, the smaller contained in the larger, and each size being immediately available for use.

In the preferred form ofmy invention, and in that illustrated in the accompanying drawing, the tool is a three-inone screwdriver, that is,comp'rises three screwdrivers of different size, having a common handle or head and each constructed to be nested in the next larger one.

The construction will be understood by reference to the drawing in which- Figure l is acentral longitudinal section through the tool with the parts assembled or nested, and

Fig. 2 is an elevation of the three screw drivers as they appear when disassembled. 1 represents the smallest of the three tools,

which comprises the blade member 10, the

head 11, the knurled grip or shank member 12, a larger screw-threaded portion 13, and a smaller screw-threaded portion 14.

2 represents the next larger tool, which comprises the blade portion 20 and the knurled grip or shank member 21, which is bored out at 22 to receive the blade 10 of the tool 1, the opening of said bore being internally screw-threaded at 23 to engage the. smaller screw-threaded portion 14 of the tool 1.

3 represents the next larger tool, in this case the largest one, which is similar in all respects, except size, to the tool 2. It comprises the blade member 30, the knurled grip or shank member 31, which is bored out at e anate or Letters Ma.

oorrnrnanoN-roon Patented Dec. 18,1917.

32 ,to receive the shank andjbl adeof 'tool. 2

and'fis internally screw;threade d at 33 toengage the larger screwethreadedportion 13 of the tool 1. The shank member 12 of tool i 1 is preferably of the same diameter as the shank member 31 of tool, 3, as shown.

By providing the 'tool' 1 with more than two screw-threaded portions, thenumber of toolscould obviously be increased but, for practical purposes, three-is 'suflicient.

The tool, which evidently may be of any type desired, capable ofbeing nested as'described, for domestic, surgical, mechanical, dental, etc., use, provides a convenient, portable implement, comprising a plurality of I tools of different size, each immediately.

available for use, having a common head and each provided with a grip or shank.

membergj'p ferably knurled as shown. What.

claim is:

1. A screw=driver, or1similar hand tool, comprising a plurality-of nested members each having a blade, the smallest member also having a head, and screw-threaded portions of different diameter; the largest member having a body portion-internally screwthreaded to fit on the largest screw-threaded portion of the smallest member, and an intermediate member internally screwthreaded to fit on the smallest screw-threaded portion of the smallest member.

2. A combination hand-tool. consisting of three tools of different-size adapted to be nested, the smallest tool comprising a head, a grip portion, two screw-threaded portions of different diameter, and a blade; the next larger tool comprising a body' portion internally screw-threaded to fit on the smaller screw-threaded portion of the smallest tool, and a blade, and the largest tool comprising a body portion of the same diameter as the grip portion of the smallest tool and internally screw-threaded to fiton the larger screw-threaded portion of thesmallest tool,

and a blade.

In testimony whereof I aflix my signature in presence of two witnesses. j; DWIN L. LANGFORD.

Witnesses: 1

J orm F. Kenn, .J. H. ADAMS.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3991796 *Dec 22, 1975Nov 16, 1976O.K. Machine And Tool CorporationWire cutting, stripping and wrapping hand tool
US4161819 *Mar 3, 1978Jul 24, 1979Frank PietrantonioGlass cutter
US4170909 *Sep 23, 1977Oct 16, 1979Wagner Theodore RTool holder
US4300607 *Mar 7, 1980Nov 17, 1981Mellinger Ralph DVariable length tool handle
US4399723 *Sep 25, 1980Aug 23, 1983Gilles MarleauCompact combination tool set
US4553300 *May 29, 1984Nov 19, 1985Mancha Clayton SPocket "E"-ring installation tool
US5038452 *Oct 18, 1989Aug 13, 1991Latshaw Enterprises, Inc.Method of assembling an improved ratcheting tool driver
US5442982 *Nov 26, 1993Aug 22, 1995Bell; Dennis J.Nesting pocket screwdrivers
US5855505 *May 29, 1997Jan 5, 1999Letts; Joshua E.Surface leveling tool
US5868048 *Apr 25, 1997Feb 9, 1999Cassutti; PaoloAdjustment hand tool/screwdriver
US6405396 *May 30, 2001Jun 18, 2002Chiung-Chang TsaiScrewdriver assembly with an extendable rod
US6523440Mar 10, 2000Feb 25, 2003Ridge Teel CompanyCompression stop and coupling wrench
US6629478 *Jul 31, 2001Oct 7, 2003Burton KozakHand tool device with opposing drive ends and storage for multiple tool bits
US7013516 *Jun 17, 2003Mar 21, 2006Ready Products, Inc.Hammer
US7255028 *May 17, 2006Aug 14, 2007Helen Of Troy LimitedMulti-bit precision screwdriver
US7430799 *Dec 29, 2004Oct 7, 2008International Business Machines CorporationApparatus for deforming flexible cable sections extending between rigid printed circuit boards
US7818843 *Jan 30, 2008Oct 26, 2010Union Rich Usa LlcMulti-function tool apparatus and system
US8707492 *Dec 7, 2011Apr 29, 2014George ConibearLath and plaster removal tools and systems
US8739319May 7, 2013Jun 3, 2014SERE Industries Inc.Helmet stabilization apparatus
US8807232 *Oct 18, 2011Aug 19, 2014John Elliot BahretIntegrated stud insertion and removal apparatus
US8960090 *Jul 7, 2009Feb 24, 2015John Frank YeomansCraft tools
US9598872 *Jun 27, 2013Mar 21, 2017Lorenzo ZappiaCompound holding device for retaining tools
US20040089119 *Nov 12, 2002May 13, 2004Li-Wen KaoHand tool assembly having a small tool nested within a large tool
US20050112910 *Dec 29, 2004May 26, 2005International Business Machines CorporationMethod and apparatus to pre-form two or more integrated connectorless cables in the flexible sections of rigid-flex printed circuit boards
US20080178393 *Jan 30, 2008Jul 31, 2008Union Rich UsaMulti-function tool apparatus and system
US20100263133 *Apr 21, 2009Oct 21, 2010Timothy LanganMulti-purpose tool
US20110146513 *Jul 7, 2009Jun 23, 2011John Frank YeomansCraft tools
US20120111582 *Oct 18, 2011May 10, 2012John Elliot BahretIntegrated stud insertion and removal apparatus
US20120192360 *Dec 7, 2011Aug 2, 2012George ConibearLath and plaster removal tools and systems
US20140000083 *Jun 27, 2013Jan 2, 2014Lorenzo ZappiaCompound holding device for retaining tools
USD744169Sep 5, 2013Nov 24, 2015SERE Industries Inc.Helmet counterweight shovel head
U.S. Classification81/436, 81/439, 81/177.4, 7/167, 7/165
Cooperative ClassificationB25B15/007