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Publication numberUS2525316 A
Publication typeGrant
Publication dateOct 10, 1950
Filing dateFeb 10, 1948
Priority dateFeb 10, 1948
Publication numberUS 2525316 A, US 2525316A, US-A-2525316, US2525316 A, US2525316A
InventorsFloyd F Schiff
Original AssigneeFloyd F Schiff
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Post driver and ejector
US 2525316 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Patented Oct. i0,


This invention relates to a post driver and ejector, and the tool is particularly effective in the removal of posts from the ground, as well as in the driving of posts into the ground.

It is desired to drive posts into the ground for various purposes, such as, for example, providing fence posts, providing anchors, and for a variety of other purposes. Often the posts are rather tall and it is difficult to drive the posts without working from an elevated position. Further, in the withdrawal of the posts, considerable difficulty is experienced because of the height of the posts.

An object of the present invention is to provide apparatus which may be effectively employed by an operator standing upon the ground, and

the operation is carried on effectively irrespec-- tive of the height of the post. A further object is to provide a post driving or extracting device, in which a, driving member or hammer may be reciprocated in either direction for the driving of a post or drill into the ground, or for the removal of the post from the ground. Yet another object is to provide apparatus adapted to receive posts of varying lengths and for effectively driving the same into the soil. Other specific objects and advantages will appear as the specification proceeds.

The invention is illustrated, in a preferred embodiment, by the accompanying drawing, in which:

Figure 1 is a broken side view in elevation of apparatus embodying my invention; Fig. 2, an enlarged broken vertical sectional view; and Fig. 3, a transverse sectional View, the section being taken as indicated at line 3 Of Fig. 2.

In the illustration given, I designates a shank or track member threaded at its top against an anvil II and threaded at its bottom into the lower neck portion of the lower anvil l2. The track member I 0 and each of the anvil members are hollow. In the illustration given, they are cylindrical in shape, but it will be understood that they may be of any cross-sectional shape.

Mounted upon the shank or track is a sleeve member-l3 secured at its upper end by welding or other suitable means to an upper hammer member I4 and secured at its lower end to the hammer member I5.

The lower anvil I2 is provided with a transversely-extending opening l6 adapted to receive a drive pin IT. The track member I0 is also apertured to receive the drive pin II.

The post [8, which is to be driven by the mechanism described, may be of any suitable type or structure. In the illustration given, the post 18 is tubular and is provided at its top with a friction cap [9 and at its bottom with a point 26. Intermediate its length, the post IB may be provided with aligned transverse openings 2| adapted to receive the drive pin I1. I prefer to have the openings in the post l8 and in the track l0 and in the lower anvil l2 slightly inclined downwardly so that the drive pin H will remain freely in position during the raising or lowering of the post.

In the illustration given, the post l3 extends slightly above the anvil I I, and it will be understood that it may extend any desired distance above the anvil, or if the post should be relatively short, the top of the post may be well within the track member 10 when the point of Y the post is started into the ground.

Operation In the operation of the apparatus, a post t8, having one or more openings 2| extending transversely therethrough, is inserted within the track member ID, and the drive pin I1 is inserted through a pair of openings 2| in the post l8, as shown more clearly in Fig. 2. The sleeve l3 may then be grasped and raised to drop the hammer l5 against the lower anvil l2. Reciprocation of the sleeve l3 in this manner drives the post downwardly into the ground. After driving the post some distance into the ground, the pin I! may be withdrawn and then inserted through another upper pair of spaced openings 2|, as illustrated in Fig. 2, so that the post may again be driven downwardly without elevating the driving apparatus. It will be understood that any desired number of openings 21 may be formed transversely through the post, and by this means, the post can be driven readily into the ground in successive stages and just as readily withdrawn from the ground.

In the operation for removing the post from the ground, the sleeve i3 is grasped and raised sharply to bring the upper hammer M against the upper anvil ll. Repeated upward strokes of the sleeve thus raise the post to a desired distan-ce. Thereupon, the drive pin I! may be removed and caused to engage aligned openings2l in a lower portion of the post I8, and the upward movement of the post may be thus resumed.

From the foregoing, it will be observed that the operator may at all times stand upon the ground and be in a comfortable and effective position for raising the post out of the ground or for driving it into the ground, the changes in the relative position of the lower anvil and the post being made at spaced intervals by the removal of the pin and the insertion thereof through another series of openings in the post. By having the transverse openings 21 through the post in vertical alignment with each other, it is easy to register the pin F with a second series of openings by merely raising or lowering the lower anvil E2 to the desired position and until the drive pin I T can be pressed into the next series of openings.

It will be understood that various connections for imparting the driving force delivered to the anvils to the post may be employed; If desired, f

the upper anvil H may be closed at'the top so, that the bottom of the anvil strikes the top of the post, and this structure is useful for short posts. I prefer, however, to employ the structure illustrated which permits the use of posts of any length, while at the same time permitting repeated adjustments between the lower"anv'i1 and the post. a

'While, in the foregoing specification, I have set forth a. specific example in great detail for the purpose of illustrating one embodiment of the invention, it will be understood that such details of structure may be varied widely by those skilled in the art"without departing from the spirit of [my invention.

' I claim:'

l. In a post driver and ejector, a hollow track member, a, pair of spaced anvils fixed to the outer surface of. said track member, a sleeve receiving saidtracl; memben'a pairof' hammers carried by said sleeve at, opposite ends thereof, a post extending through. said hollow track member,and cooperating means, on" said track member and post for releasablyanchoring said post 4 to said track member in different relative positions.

2. In a post driver and ejector, a hollow track member adapted to receive throughout its length a post which is to be driven into the earth, a pair of spaced anvils fixed to the outer surface of said track member, a sleeve receiving said track member, a pair of hammers carried by said sleeve at opposite ends thereof, and means carried by said track member and engagealble with said post for releasaby anchoring'said post to said track member at selected relative positions between saidrpost and track member whereby ,said postmay be driven into the earth while fixed horizontal position relative to the earth.

gageable with said post at a plurality of longitu dinal points thereof for releasably anchoring said post to said track member.

" FLOYD so I F.


The following references areof record in. the

file of this patent:

UNITED STATES PATENTS Number Name Date 716,274 Eierce Dec. 16,1962

24161890 Co11ord Jan, 19, 1937

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US716274 *May 26, 1902Dec 16, 1902Charles L Peirce JrCombination-tool.
US2067890 *Mar 12, 1936Jan 19, 1937Collord George LPost driver
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2633947 *Apr 28, 1948Apr 7, 1953Schiff Floyd FAnchoring stake
US3211240 *Jul 1, 1964Oct 12, 1965Smitter Harry AStake puller
US3499497 *Jul 9, 1968Mar 10, 1970Moore DonaldSign pole driver
US3823785 *Jun 27, 1973Jul 16, 1974Toliver GSelf-drive support and anchor for supporting elements
US4102141 *Nov 11, 1976Jul 25, 1978H. B. Fleming, Inc.Method of and equipment for use in driving composite piles
US4261424 *May 21, 1979Apr 14, 1981Gonterman Robert NPeg and stake driver and extractor
US4357001 *Mar 23, 1976Nov 2, 1982Schmanski Donald WMethod and apparatus for making fences
US4813494 *Feb 26, 1987Mar 21, 1989Beard Larry DStake driver
US5085281 *Oct 2, 1990Feb 4, 1992Selly Patrick HSlide hammer apparatus
US5274898 *Oct 21, 1992Jan 4, 1994Sovitch John PMethod for locating slit roll on a skid
US5379504 *Jan 3, 1994Jan 10, 1995Sovitch; John P.Apparatus for locating slit roll on a skid
US6571885 *Feb 8, 2001Jun 3, 2003The United States Of America As Represented By The Secretary Of The ArmySurvey flag positioning method and apparatus
US6935436 *Aug 1, 2003Aug 30, 2005The United States Of America As Represented By The Secretary Of The Air ForceDouble-headed tent stake driver and puller having twin release levers
US7040416Nov 25, 2002May 9, 2006Herbert Warren CollinsT-post hole-forming device and use for installing a T-post
US7934567Dec 19, 2008May 3, 2011John MadeyDriving apparatus for planting a shaft in a granular base
US20110259621 *Apr 26, 2011Oct 27, 2011Bac Industries, Inc.Slide Hammer Stake Driver
U.S. Classification173/91, 175/19, 173/132, 144/195.5
International ClassificationE04H17/26
Cooperative ClassificationB25D1/16, B25D1/12, E04H17/261
European ClassificationB25D1/12, B25D1/16, E04H17/26B