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Publication numberUS1685380 A
Publication typeGrant
Publication dateSep 25, 1928
Filing dateSep 9, 1926
Priority dateSep 9, 1926
Publication numberUS 1685380 A, US 1685380A, US-A-1685380, US1685380 A, US1685380A
InventorsLlewellyn B Shultz
Original AssigneePilley Packing & Flue Brush Mf
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Scraping tool
US 1685380 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

lSept 25, 192s.

1,685,380 L. B. SHULTZ SCRAPING TOOL Filed Sept. 9, 1926 Parental sept. 25, 192s.




v'immanente Toon-,1v1

uhmm ma september s, 192s. semi niegan My invention relates to a scraping tool and particularly to one adapted to remove deposits fzom the inner surfaces of holes vof small bore, such for exam le, as the guide openings for valve stems o internal combustion engines. l y

'lhe object of my invention is to provide a tool for the purpose described, which may be readily adjusted to operateon bores of .different diameters and which will be self sharpening.

In the accompanying drawings, which illustrate one form of tool made in accordance with my invention, Figure 1 is a side elevation; Figure 2 is a section taken on the line 2-2 of Figure 1; and Figure 3 is an enlargedA section taken on the line 3 3 of Figure 1.

VThe stem 5 of the tool is adapted to be held in the chuck of the drill by means of which the rod is a blade holding sleeve 8. Sliding i the tool is rotated. Threaded into the stem 5 is a rod 6 firmly held in position in the stem by a lock nut 7. Secured to the upper end of on 'the rod is a second blade holding sleeve 9.

These sleeves 8 and 9 are each provided with i' a bore 10 terminating in a conical end 11 and are arranged on the rod with the open ends ofthe bores toward each other so as to receive the endsethe scraping blades 12.

-The scraping blades areformed of flat strips of tempered steel, -preferably four in number. and may be sprung outwardly at the central parts to a greateror lesser degree to it different sized'holes by movement of the.

sleeve 9 along the rod 6. In order to secure the longitudinal movement of the sleeve 9 I thread on the lower end of the rod a collar 13 provided with flattened faces 14 for engagement with a wrencht A' lock nut 15 serves to secure the collar in position after the proper adjustment has been made.

, The conical ends 11 of the bores 10 force the' ends of the blades firmly against the rod 6 and will' be evident that the edges Aof the blades will form scraping faces substantially perf pcndicular `to thenwall of the bore'ope'rated on, and that thev tool will be in effect self sharpening as the wear, which will-be wholly on the corners of the blades, will affect the relation of the scraping faces to the walls operated u on. i

Ha ving fully' escribed `mv invention, what I claim as new and desire to secure by Letters Patent ofthe United States is:

In a device of the class described, the combination with a rod, of a pair of sleeves on said rod, each provided with a bore of greater diameter than the rod and terminatin in a restricted portion, bendable scraping Elades having their ends between said rod and stricted portion, and means for moving said in no way :soA

sleeves toward and away from each other to spring'the scraper blades and thus var the eii'ective diameter of the tool,

In testimony whereof, I hereunto aiiix my signature, this l7th day of September, 1926. LLEWELLYN B. SHULTZ.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2542270 *Nov 5, 1948Feb 20, 1951Hurd CorpScraper apparatus for centrifugal evaporators
US2599077 *Sep 4, 1948Jun 3, 1952Sturgis Charles ERotary tool for scraping tube interiors
US2665762 *Aug 28, 1951Jan 12, 1954Baker Oil Tools IncCasing centering device
US3076254 *Oct 31, 1960Feb 5, 1963Ricci Ernest ADe-burring tool
US3852923 *Oct 9, 1973Dec 10, 1974Hess CMaterial removing bit
US3917429 *Apr 11, 1974Nov 4, 1975Ertley Holmes EThin wall tubing deburring tool
US4256510 *Aug 11, 1978Mar 17, 1981Thompson David EMethod of scraping corners
US5257435 *Feb 27, 1992Nov 2, 1993Brewster John SChimney cleaning tool
US5658103 *Jan 29, 1996Aug 19, 1997Mitsuhide InokuchiBoring bit
US7523946 *Jun 20, 2005Apr 28, 2009Xerox CorporationExpandable chuck
US7644465Feb 11, 2005Jan 12, 2010John F BentlyComponent brush system
US7891076Mar 16, 2009Feb 22, 2011Xerox CorporationExpandable chuck
US8142462May 27, 2005Mar 27, 2012Cavitech, LlcInstruments and methods for reducing and stabilizing bone fractures
US8221420Feb 16, 2010Jul 17, 2012Aoi Medical, Inc.Trauma nail accumulator
US8353911May 21, 2008Jan 15, 2013Aoi Medical, Inc.Extendable cutting member
US8562634Feb 24, 2012Oct 22, 2013Cavitech, LlcInstruments and methods for reducing and stabilizing bone fractures
US8906022Mar 8, 2011Dec 9, 2014Conventus Orthopaedics, Inc.Apparatus and methods for securing a bone implant
US8961518Jan 19, 2011Feb 24, 2015Conventus Orthopaedics, Inc.Apparatus and methods for bone access and cavity preparation
US20050267483 *May 27, 2005Dec 1, 2005Middleton Lance MInstruments and methods for reducing and stabilizing bone fractures
US20060284384 *Jun 20, 2005Dec 21, 2006Xerox CorporationExpandable chuck
US20090174156 *Mar 16, 2009Jul 9, 2009Xerox CorporationExpandable chuck
US20120179161 *Jul 23, 2010Jul 12, 2012Smith & Nephew, Inc.Surgical instruments for cutting cavities in intramedullary canals
U.S. Classification15/104.19, 15/93.1, 15/104.9
International ClassificationB25B27/00
Cooperative ClassificationB25B27/00
European ClassificationB25B27/00