US1600476A - Reamer - Google Patents

Description

Sept. 21, 15526.

J. F. KETCHEY REAMER Filed Oct. 17, 1925 Patented Sept. 21, 1926.

' aoirn r. KETCHEY, or DALLAS,YTEXAS.

BEAMER.

Application filed October 17, 1925. Serial No. 63,197.

This invention relates to reamers and're few more particularly to a device of this character to be used when reaming the bot' toms of pier or post holes in building construction preparatory concrete therein.

An important object of this invention is the eifectivecutting a'wayof the ground at the 'b-aseof the hole in an inverted cone shape in a simple and practical-manner with the'consumption of a minimum of time. Y

A further object is to provide a device which is readily adjustable. for reaming shallow or deep holes.

An object is to provide a device which may be Operated by a single individual, and which utilizes leverage principles in such a manner as to make such operation readily and easily performed.

An advantage of this invention is its simplicity of construction and economy of operation.

Other advantages and objects will be brought out, as well as those'heretofore mentioned, in the course of the following description taken in connection with the annexed drawings in-which-- Figure 1 represents a side elevation of an adaptation of my invention assembled in place for operation. Figures 2 and 3 are cross-sectional and front elevational views respectively of the fulcrum plate.

Figures 4: and 5 are detailed elevation and cross-sectional views of the adjustable guide 7 member.

Figure 6 shows the drilling or cutting pick, and Figure 7 represents an elevation of the base of the supporting pipe member.

In the figures, the supporting member 1, formed of metal piping, has secured at one end a spear shaped member 2. This mem ber has a shaft 2' which is tapered and is settling down into soft ground at the time the reamer is being operated.

, At the other extremity of the pipe or at a position adjacent that extremity at a point preferably between three or four feet from the surface of the ground is. secured a fulcrum plateB (shown in detail in Figures 2 to the depositing of and This plate extends laterally a sufficient distance from its point of'attachment to the pipe, to provide practical working leverage. At a substantial space from the end of the plate is drilled a hole 3. A clamp, 5, shaped as shown in the figures or in any. other desired shape to best grip the pipe,'when the bolts 4- l are tightened, sew. cures the plate to the pipe. A small hookliK'e projection 5 is formed on the upper outside edge of the clamp. The-heads of the bolts are sunk so that their 'tops are level with the plate surface; Recessesin the plate to receive these heads are designated by characters 33.

A suitable weight 6 is hung uponthe hook 5 to hold the pipe steady in its position in the hole, see Figure 1, to provide against the possibility- .of movement of "the pipe when severe strokesfare necessary to dis lodge tough, hard or rocky earth.

A I 1,600,476 PATENT .o-FF cE.

A lever "or bar 7 is secured by adjustable clamp 8 in one of the perforations 7 to a working bar or pipe 9. i As thebar is prefers ably flat, a shaped handle'8 is provided for the f'extremityv thereof, the opposite-end of "thebarbeing secured by a bolt orfother suitable member through aperture SP, to the plate."

The extremity of the bar extends beyond the plate,.but the bar lies flat against'the plate for reasons set-forth more fully here inafter.

A pick or curve pointed rod l0 is provided which has a tapered upper extremity to allow insertion. in lower end of pipe 9. "A set screw or bolt 11 secures the pick rigidly in the pipe. v

Aguide member 12 having a collar 14 secured at one end, is itself secured to the pipe 1 by means of a U bolt 13. The member 12 has a series of curves formed in one side thereof and holes 12 on each side'of each curve adapted to receive the U bolt. hen the bolt is tightened it draws the guide member into rigid position on the pipe 1.

The curvesv and additional holes" form means for further lateral adjustment of the collar with respect to the pipe. The collar acts as aguide to the pick. The letters X -X show the shape ofthe hole after the reaming process. In operation the pipe is assembled with its spear headed support, the adjustment of the working pipe and bar determined, depending upon the width of the space that is to be reamed, and the depth of the hole a; the bar or lever T is then moved up and down by the handle 8 the pipe 9 is moved by the handle movement, and the pick guided by the handle, cuts away the dirt in the bottom of the hole.

As desired, the operator moves around the hole, after lifting the pick to clear the point from contact With the dirt around the edges of the hole, the handle acting as a lever against the broad fiat surface of the plate,

and practically Without cessation of the picking operation the hole is reamed out accurately and evenly in an inverted cone shape, in a very short period of time. The pipe 9 may be threaded at its upper end to allow extensions to be made, when the reaming of deeper holes is required.

It. should be understood that various changesin details of construction may be made'to secure desired. results Without departing from the spirit and intent of the invention as set forth in the following claims.

lVhat I claim is: 1. In a device for reaming the bottom of holes, a supporting member having a point- 'ed lower extremity adapted to be seated in the bottom of the hole, a flat surfaced plate adjustably secured to the upper portion of said supporting member, a lever pivotally attached to said plate parallel and touching the surface of the plate, and extending therefrom beyond the support pipe, means on said bar beyond the support pipe, for pivotally and adjustably engaging the up per portion of a movable excavating memher, a clamp secured to 'thelower portion of the supporting member, a collar in attachment to the clamp, said collar adapted to guide the direction of movement of the excavating memberwhen the lever is actuated.

and the said excavating member is raised or lowered. V

in a reaming device for pier or post holes, a stationary member adapted to be seated in the bottom of the hole, a movable excavating rod member pivotally attached to the body of a lever having its fulcrum in a plate extending from the stationary.

member diametrically opposite the point of attachmentof the lever and the movable er'port-ion of the supporting member, said guide adapted to receive-the end of the e:

cavating member, and direct its movement. 4. A reamer comprising a stationary upright rod or pipe member, a plate extending laterally from the upper portion of the rod, a lever pivoted on the plate and lying flush with the surface thereof, and extending therefrom past the rod and beyond it, a movable excavating member pivotally attached to the lever at a point diametrically opposite the fulcrum attachment, and means on the stationary rod at a point adjacent its loWer end to guide the movement of the movable member when the lever is actuated.

In testimony whereof I have signed my name to this specification.

JOHN F. KETGHEY.

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