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Publication numberUS3216288 A
Publication typeGrant
Publication dateNov 9, 1965
Filing dateNov 19, 1962
Priority dateNov 19, 1962
Publication numberUS 3216288 A, US 3216288A, US-A-3216288, US3216288 A, US3216288A
InventorsIrving Gardner
Original AssigneeIrving Gardner
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Adjustable and retractable hand reamer device
US 3216288 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

I. GARDNER 3,216,288 ADJUSTABLE AND RETRACTABLE HAND REAMER DEVICE Nov. 9, 1965 2 Sheets-Sheet 1 Filed Nov. 19 1962 INVENTOR. IRVING GARDNER ;7mP/VV 2 Sheets-Sheet 2 N k m mm m n: m @N Nov. 9, 1965 GARDNER ADJUSTABLE AND RETRACTABLE HAND REAMER DEVICE Filed NOV. 19 1962 IRVING GARDNER United States Patent 3,216,288 ADJUSTABLE AND RETRACTABLE HAND REAMER DEVICE Irving Gardner, Hunter, N.Y. Filed Nov. 19, 1962, Ser. No. 238,510 1 Claim. (Cl. 77-75) This invention relates to an adjustable and retractable hand tool assembly and is particularly directed at a reaming device or similar tool.

According to the invention, there is provided a tool assembly having a tubular casing or barrel in which is an axially slidable plug which can be fixed in position in the casing. Extending from the plug axially of the casing is a reamer, file, stylus or other working tool. The tool may be tapered in form so that different cross sections of the tool can be selectively located at the end of the casing out of which the tool is adapted to extend. The tool in extended position can be locked in position with respect to the casing. The tool can be used to clear a hole in a gas burner or to make the hole larger. By advancing and retracting the tool different sizes of burner holes can be formed or cleared. The tool can be completely retracted int-o the casing to a protected position when not in use. A clip may be provided on the device for supporting it on a users pocket or other garment portion when the tool is not in use.

In another form of the invention, the movable plug carries two tools which can be alternately extended out of the casing. Both tools can be wholly retracted into the casing when not in use.

It is therefore a principal object of the invention to provide a hand tool assembly including a cylindrical casing with a working tool adjustably retractable and extensible with respect to the casing.

A further object is to provide a hand tool assembly as described including one or two working tools extending axially of the casing and carried by a plug slidably disposed in the casing.

Another object is to provide a hand tool assembly as described wherein the working tools are reamers, files, styluses, scribers, screwdrivers, saws, pencils, etc.

Another object is to provide a hand tool assembly including a cylindrical casing with an extensible and retractable tool therein, the casing being calibrated to indicate the degree of extension.

Another object is to provide a hand tool assembly having an oval set screw for holding the tool in an adjusted moved position.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

FIG. 1 is a perspective view of a device embodying the invention.

FIG. 2 is a side view of the device.

FIG. 3 is a longitudinal sectional view taken on line 33 of FIG. 2.

FIG. 4 is a perspective view of a plug employed in the device.

FIG. 5 is a side view of another device embodying the invention.

FIGS. 6 and 7 are sectional views taken on lines 66 and 77 of FIG. 5.

FIG. 7A is a side elevational view of the set screw shown in FIGS. 5 to 7.

FIG. 8 is a sectional view similar to FIG. 3 of still another device according to the invention.

Patented Nov. 9, 1965 Referring to FIGS. 1-3, there is shown a tool assembly 10 including a cylindrical casing 12 with axial cylindrical bore 11. The casing has a flat end 14 with a central hole 16. The other end 18 of the casing is Open. The casing has a lateral longitudinal slot 20. One edge of the slot 20 is calibrated to provide a scale 29 of degrees. Inside the casing is an axially slidable cylindrical plug 22; see FIGS. 2-4. This plug has an axial hole 24 and two spaced threaded radial holes 26, 28. A thumb screw 30 has a threaded shank 34 passing through slot 20 and engaged in hole 26. This thumb screw serves to slide the plug 22 axially in the casing 12 when the screw is loose. When the screw is tightened so that flange 35 of the screw bears on the outer side of the casing, the plug is fixed in position in the casing. A spring clip 36 can be provided for supporting the tool on a pocket or other garment portion of a user of the tool. This clip has a hole 37 through which passes shank 34, a spring tongue 39 which rides over the edges of slot 20, and two spring fingers 38 which slidably engage the casing circumferentially. The tongue is provided with a line mark 33 to coact With the scale 32. The clip is formed with an extension 31 on its end opposite tongue 39, and a line mark 33 is formed on the extension to coact with the scale 32. The clip slides with the plug when the thumb screw is moved along the casing.

A reamer tool 40 has one end 42 engaged in hole 24 in the plug. This end of the tool 40 is engaged by set screw 44 tightened in hole 28 in the plug and accessible through slot 20 for loosening and tightening the set screw to release and secure the tool 40 respectively. The tool 40 has a tapered end 46 extending axially of the casing in align ment with hole 16. As shown in FIGS. 1-3, the reamer end 46 can be adjustably extended out of the casing through end wall 14. The reamer can be inserted into a gas burner tip T shown in dotted lines in FIG. 3 for clearing or enlarging hole H in the tip. The end E of the burner tip will be placed in abutment with the flat end 14 of the casing and the reamer 40 will be extended until a desired cross-sectional area of the reamer end 46 will be located at the plane of casing end 18. The reamer may have a rectangular cross-sectional area.

The reamer 40 can be wholly retracted into the casing by moving the plug 22 toward the open end 18 of the casing. The screw 30 will then be located at the end 21 of slot 20 adjacent to casing end 18. When screw 30 is loosened the reamer can be advanced out of flat end 14 a desired distance. Then screw 30 can be tightened to fix the plug 22 and the reamer in position in the casing.

If required, the plug 22 can be removed and inserted through the open end 18 of the casing, if screw 30 is first removed.

FIGS. 5-7 show another form of the invention in which the spring clip 36a is shown in dotted lines. Casing 12a is longer than casing 12. Plug 22a which is slidable axially in the casing has two opposed axial end holes 24a, 24b, to receive ends 42, 42a of two reamers 40, 40a. Allen type set screws 44, 44a secure the reamer ends 42, 42a of two reamers 40, 40a, in the respective holes 24a, 24b of the plug. Reamer ends 46, 46a may be of the same or different sizes.

Slot portion 20' is circumferentially offset from slot portion 20" so that the shank 34 of screw 30 must be turned slightly circumferentially of the casing at the slot ends 20a, 20b of the respective slot portions 20', 20", in moving the plug from one end of the casing to the other.

One long edge of the slots 20 and 20" is calibrated to provide a scale 29'. The thumb screw 30a is similar to screw 30 except that the shank 34a is formed with an extension 34' serving as a key and shaped to be received in the Allen type screws 44 and 44a for turning said screws. A transverse hole 35' is formed in the head of the screw to accommodate a tool for turning.

Casing 12a is longer than the combined lengths of reamers 40 and 40a so that both reamers can be Wholly concealed and protected within the casing when not in use.

Casing 12a has a removable end cap 19 provided with an end Wall 17 having a central hole 16b through which tool end 46a can be extended. When the cap is removed, open end 18a of the casing 12a will be cleared for removal and insertion of plug 1211 when required. Other parts of tool assembly a corresponding to those of assembly 10 are identically numbered.

If desired, the reamers can be replaced by other working tools such as files, scribers, screwdrivers, etc. In FIG. 8, the tool assembly 10b is similar to tool assembly 10 but reamer 40 has been replaced by a pencil or pen 40b secured in hole 24b of plug 2219. Still other Working tools of rod-like structure may be employed in place of the tools 40, 40a and 40b.

The tool assemblies 10, 10a and 10b serve as convenient, useful accessories for use by mechanics, repairmen, and others employing hand tools of the type described.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and that various changes and modifications may be made within the scope of the invention as defined in the appended claim.

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

A reaming device of the character described compris- 3O ing, a tubular casing having a cylindrical axial bore there in which is closed at one end thereof by an end wall having a central aperture therein and is open at the other end thereof, a plug slidably mounted in said bore, an elongated longitudinally extending narrow slot in one side of said casing, said plug having an axial bore in one end there of and a pair of spaced parallel internally threaded radial bores one of which intersects the said axial bore in said plug, a clip having a spring tongue which is disposed over said slot and a pairof spring fingers which yieldably grip the outer wall of said casing, a thumb screw having an enlarged head and a threaded shank which is inserted through an aperture in said clip and through said slot and is threaded into the other of said radial bores, an elongated reaming tool having a tapered body portion and a shank which is clamped in the said axial bore in said plug by a set screw threaded into the said one of said radial bores, the tapered body portion of said tool progressively increasing in cross-sectional area from the outer end thereof to the said shank thereof, saidplug being adapted to be moved back and forth in the said cylindrical bore in said casing to project said reaming tool out from said casing through the said aperture in said end wall and to retract said tool back into said casing, the length of said casing being greater than the combined length of said plug and said tool, and said clip being movable along with said plug, a graduated scale on the outer wall of said casing adjacent one side of said slot, said scale being calibrated in accordance with the decreasing cross-sectional area of the said body portion of said tool, an index mark on said clip which is adapted to cooperate with said scale to indicate the size of said body portion at the outer end of said aperture, said plug and said clip being adapted to be clamped in adjusted position by the tightening of said thumb screw.

References Cited by the Examiner UNITED STATES PATENTS 138,528 5/73 Reed et al. 145--64X 202,654 4/78 Holland 19 468,595 2/92 Bunch -64X 1,310,257 7/19 Stiles 120-19 X 1,701,771 2/29 Di Stefano 30-162 1,841,190 1/32 Iustiss 85--32 2,302,621 11/42 Luboshez 8541 WILLIAM w. DYER, JR., Primary Examiner.


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Referenced by
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US3315295 *Jul 13, 1964Apr 25, 1967Jeter Jr James TTorch cleaning tool
US3682177 *Mar 18, 1970Aug 8, 1972Acme Eng Co IncCranial drilling instrument
US3885308 *Jun 28, 1974May 27, 1975G & L Ind IncRetractible tool holder
US4320544 *Oct 17, 1979Mar 23, 1982Bryant Floyd CCombination drill and screwdriver
US4443963 *Apr 27, 1981Apr 24, 1984Braaten Donald LFishing rod
US5000236 *Mar 15, 1990Mar 19, 1991Jemison Jerry MTube refill apparatus
US5511261 *Sep 21, 1994Apr 30, 1996Collins; Walter W.Utility tool
US7131974Oct 14, 2003Nov 7, 2006Keyer Thomas RSurgical drill guide
US7488327Apr 12, 2004Feb 10, 2009Synthes (U.S.A.)Free hand drill guide
US7574804 *Feb 14, 2006Aug 18, 2009Kai U.S.A., Ltd.Knife with sliding blade and disengageable deployment mechanism
US8303593 *Nov 6, 2012Stryker Trauma GmbhBone cutting tool and method of use
US8343195Jan 1, 2013Synthes Usa, LlcDrill-tap-screw drill guide
US8752456Jul 5, 2011Jun 17, 2014William Andrew TurnboDevice for deployment of alternate tool heads
US9289903 *Jan 31, 2012Mar 22, 2016Ronald E. DouzanisKnife draw assembly
US20040167527 *Jan 15, 2004Aug 26, 2004Stryker Trauma GmbhBone cutting tool and method of use
US20050119663 *Oct 14, 2003Jun 2, 2005Keyer Thomas R.Surgical drill guide
US20050210682 *Nov 5, 2002Sep 29, 2005Henrik BartholinBlister knife
US20060207102 *Feb 14, 2006Sep 21, 2006Kai U.S.A., Ltd., Dba Kershaw KnivesKnife with sliding blade and disengageable deployment mechanism
USD699092Jan 18, 2013Feb 11, 2014Milwaukee Electric Tool CorporationUtility knife
USD699540Jan 18, 2013Feb 18, 2014Milwaukee Electric Tool CorporationUtility knife
USD699541Jan 18, 2013Feb 18, 2014Milwaukee Electric Tool CorporationUtility knife
USD701695Sep 16, 2013Apr 1, 2014Milwaukee Electric Tool CorporationUtility knife blade case
U.S. Classification408/202, 15/104.2, 408/186, 30/162, 408/20
International ClassificationB23D77/12, B23D77/00
Cooperative ClassificationB23D77/12
European ClassificationB23D77/12