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Publication numberUS3050095 A
Publication typeGrant
Publication dateAug 21, 1962
Filing dateJun 24, 1960
Priority dateJun 24, 1960
Publication numberUS 3050095 A, US 3050095A, US-A-3050095, US3050095 A, US3050095A
InventorsPrather Roland W
Original AssigneePrather Roland W
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Hand operated pike
US 3050095 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Filed June 24, 1960 INVENTOR. ROLAND W. PRATHER ATTORNEYS 3,050,095 HAND OPERATED PIKE Roland W. Prather, Rte. 2, Box 161, Woodburn, Oreg- Filed June 24, 1960, Ser. No. 38,514 1 Claim. (Cl. 144-193) This invention relates to a bar or pike for the removal of tree stumps, hereinafter referred to as a stumping bar, and has as its primary object the provision of an improved stumping bar which may be easily and efliciently operated by a single individual.

As conductive to clearer understanding of this invention it may be here pointed out that a stumping bar at the present time generally requires the use of two operators, one who holds the bar at the proper angle and the other who drives it under the stump by hammering on the upper end with the sledge or the like. There are inherent dangers involved in the use of such a bar as, for example, the possibility of bone breakage due to the hammer sliding off the end of the bar or missing it completely. Additionally, after the bar has been driven into the stump a wrench must generally be applied to twist the bar free for removal. Then the bar must be pulled out by the two operators, this being a difficult operation. A primary object of this invention is the provision of a unitary stumping bar structure which may be handled by one individual, the bar comprising a shaft having incorporated therewith a heavy sliding hammer member having two oppositely disposed handles so that a single individual can both guide the bar and hammer the same.

An additional object of the invention resides in the provision of means for holding the sliding hammer against movement when not in use, to avoid the possibility of damage to surrounding objects and equipment during transportation.

A further object of the invention is the provision of such securing means which may be readily released and rendered inoperative while the bar is in use.

Still other objects reside in the combinations of elements, arrangements of parts, and features of construction, all as will be more fully pointed out hereinafter and shown in the accompanying drawing wherein there is disclosed a preferred embodiment of this inventive concept.

In the drawing:

FIGURE 1 is a side elevational view of a stumping bar constructed in accordance with the instant invention.

FIGURE 2 is an enlarged fragmentary sectional view taken substantially along the line 22 of FIG. 1 as viewed in the direction indicated by the arrows; and

FIGURE 3 is a fragmentary view similar to FIG. 2 but showing the parts in a different position of adjustment.

Similar reference characters refer to similar parts throughout the several views of the drawing.

Having reference now to the drawing in detail, the stumping bar comprises a conventional tear drop shaped point secured to an elongated shaft 11 preferably of hexagonal shape as illustrated. At the upper extremity of the shaft 11 there is welded or otherwise a collar 12 with a machined surface on its lower side. At an intermediate point of the shaft is a second confronting collar 13, having a machined upper surface and serving as a lower stop for a relatively heavy sliding hammer member 14, the latter 'being preferably cylindrical in shape and of sufiicient weight to give a desired impact to the point 10 when driving the same into a stump. The hammer 14 is provided with oppositely extending handles 15, which atent may be grasped either with both hands of the user, or individually when the other hand is used to guide the bar 11.

Due to the hexagonal shape of the bar 11 which extends through a bore 14a of corresponding shape, as best shown in FIGS. 2 and 3, removal of the bar may be ef fected by merely twisting the handles 15 to dislodge the point 10.

In the normal use and operation of the device the hammer member 14 is slid upwardly and downwardly along the bar by means of the handles 15 and, upon striking the lower collar 13 its impact is transmitted to the point 10 which is suitably lodged in the stump in a conventional manner.

When the device is being transported it is desirable that the hammer 14 be held against sliding movement. This is effected by a locking pin assembly generally indicated at 16. The assembly comprises a locking pin 17 which carries on its outer end a knurled knob 18, and which is adapted to be spring biased by means of a spring 20 into a suitable opening or detent 19 adjacent the upper end of shaft 11. The spring 20 engages a collar 21 on pin 17 and normally biases the end of the pin into the opening or detent 19. The spring assembly is adapted to be p0sitioned in a suitable bore 22 in hammer 14, and secured in position by means of a lock nut 23, the latter including a threaded extremity 23a which seats in a suitable threaded opening 23b in the outer wall of hammer 14. The outer face of nut 23 carries an elongated slot or recess 24 which is adapted to be engaged by an elongated lug or protuberance on the underside of knurled head 18. When the lug is seated in the recess 24 the pin 17 is enabled to engage in the detent 19 for the purpose of holding hammer 14 against reciprocatory movement. When it is desired to use the hammer, however, and hold the pin 17 out of engagement with detent 19, the knurled operating handle 18 is rotated to the position shown in FIG. 3 wherein the lug 25 extends transversely to the groove or channel 24, so that the end of pin 19 is held out of engagement with its associated detent and the hammer 14 may slide freely on the bar 11.

From the foregoing it will now be seen that there is herein provided an improved stumping bar which effects a material saving in time and labor and which is particularly effective for drilling a bore or hole in a stump when it is desired to place a charge therein. It will also be seen that there is herein provided a stumping bar which is particularly useful to loggers, farmers, construction workers, or anyone faced with the necessary of removing a stump or other obstacle in which it is desired to bore a charge receiving hole.

It will also be seen that there is herein provided a device which accomplishes all the objects of this invention, and others, including many advantages of great practical utility and commercial importance.

As many embodiments may be made of this inventive concept, and as many modifications may be made in the embodient hereinbefore shown and described, it is to be understood that all matter herein is to be interpreted merely as illustrative and not in a limiting sense.

I claim:

'In a stumping bar, in combination, an elongated bar, a tear-drop shaped point on one end of said bar, a collar fixed to the other end of said bar, a second collar fixed to an intermediate point of said bar, a hammer mounted for reciprocatory movement on said bar between said collars, and oppositely disposed handle members on said hammer, said elongated bar having a detent therein between said collars, a spring biased pin extending through 3 4 said hammer engageable with said detent for holding said 814,020 Clifford Mar. 6, 1906 hammer against reciproca'tory movement, and means for 875,940 Mason Jan. 7, 1903 retaining said pin out of engagement with said detent. 1,205,307 Woods Nov. 21, 1916 1,863,801 Lorber Jan. 21, 1932 References Cited in the file of this patent 5 2,3 9 8123 1 Km p 9, 1946 UNITED STATES PATENTS 2,684,839 Rice July 27 1954 776,191 Lynch Nov. 29, 1904

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US776191 *Nov 2, 1903Nov 29, 1904Thomas Jefferson LynchImplement for opening boxes or for other uses.
US814020 *May 19, 1905Mar 6, 1906Harlon A CliffordHand-controlled tool.
US875940 *Aug 30, 1904Jan 7, 1908Daniel Lee MasonPercussively-driven tool.
US1205307 *Jun 15, 1916Nov 21, 1916Koren Mfg CompanyTool-holder.
US1863801 *Oct 6, 1930Jun 21, 1932Charles LorberIce pick
US2398231 *Mar 14, 1944Apr 9, 1946John KottStar drill
US2684839 *Sep 20, 1948Jul 27, 1954John Rice CharlesHand operated pick
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3130612 *Sep 25, 1961Apr 28, 1964Larsen Grant RPlumber's calking tool
US3203668 *Mar 25, 1964Aug 31, 1965Pitsenbarger Marley TFloor jack
US3322209 *Aug 6, 1964May 30, 1967Cavanaugh George JCarpet laying tool
US3792739 *Mar 20, 1972Feb 19, 1974Chamber AJack hammer
US4106701 *Oct 26, 1976Aug 15, 1978Siefken Larry ODevice for puncturing a hole in a can and washing the inside thereof
US4254808 *Aug 10, 1977Mar 10, 1981Nokes Ronald WWedging apparatus useful for log splitting
US4261203 *Feb 16, 1979Apr 14, 1981Phillips Petroleum CompanyTip for soil gas probe
US4280540 *Jan 31, 1979Jul 28, 1981Meacham G B KirbyLog splitter
US4294298 *Mar 1, 1979Oct 13, 1981Otte Jr Otho MImpact cutting tool
US4308903 *Aug 21, 1980Jan 5, 1982Alloway Joseph RSliding log splitter device
US4310057 *May 30, 1980Jan 12, 1982Brame Durward BApparatus for extracting subterranean gas samples
US4327787 *Jan 11, 1980May 4, 1982Loratto Robert JLog splitting assembly
US4335622 *Aug 22, 1980Jun 22, 1982Phillips Petroleum CompanySoil gas probe
US4350192 *Nov 24, 1980Sep 21, 1982Thomas DentWood splitting device
US4362194 *Jan 29, 1981Dec 7, 1982Lawson Jack OManually mobile firewood log splitter
US4379475 *Mar 6, 1981Apr 12, 1983Nokes Ronald WWedging apparatus useful for log splitting
US4454792 *Dec 16, 1982Jun 19, 1984Burris Wesley EExtending bar stake puller
US4577667 *Sep 13, 1984Mar 25, 1986Frederic A. JohnsonLog splitting device
US4790533 *Apr 1, 1988Dec 13, 1988Potthast Sr Clarence HBaseball base setting apparatus
US4825918 *Jun 14, 1988May 2, 1989Meinerding Wesley CWood splitting leverage sledge
US5542479 *Jun 22, 1994Aug 6, 1996Stachler; Thomas H.Hand operated impact tool
US5662179 *May 31, 1994Sep 2, 1997Hudiksvalls Teknik Centrum AbHole-making device
US6035946 *Jul 27, 1998Mar 14, 2000The Right Equipment Company Of Pinnellas County, Inc.Entry tool for opening secured doors
US7093669 *Jul 22, 2003Aug 22, 2006United Technologies CorporationImpact tool
US7111690 *May 9, 2003Sep 26, 2006Kleinert R AmilManual slide post driver and extractor for “T”-type metal or fiberglass or plastic posts
US7802566 *Sep 28, 2010Robert FaughtPortable barbecue set and kit
US8695458 *Feb 20, 2012Apr 15, 2014Bosch Automotive Service Solutions LlcSlide hammer for a tire spoon and method of construction of the same
US20040026095 *May 9, 2003Feb 12, 2004Kleinert R. AmilManual slide post driver and extractor for "T"-type metal or fiberglass or plastic posts
US20040129437 *Jul 22, 2003Jul 8, 2004Walsh Leonard M.Impact tool
US20130186869 *Jan 22, 2013Jul 25, 2013Csx TransportationCoupler installation device
U.S. Classification144/195.5, 173/91, 173/126, 173/48, 30/367
International ClassificationB27L7/00, A01G23/06, A01G23/00
Cooperative ClassificationA01G23/06, B27L7/005
European ClassificationA01G23/06, B27L7/00D