US1681370A - Pushing and pulling tool - Google Patents

Description

v 1,681,370 A. M. SEEGER PUSHING AND PULLING TOOL Filed May 7, 1927 Patented Aug. 21, 1928.

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PUSHINGAND PULLING TOOL.

Applieationflled-May 7,1927. Serial No. 189,503.

This invention relates to tools, but more particularly to combined pushing and pullingtools. A I 1 Objects of this invention are to provlde-a new and improved tool which can beused as a pushingidevice or jack, and apullin'g devlce by a simple change whichican readily and conveniently be made; and to provide a tool of the above class having the novel features of construction and arrangement hereinafter described.

The invention is shown by way of illustration in the accompanying drawings, in which Fig. 1 is a side elevation of the tool; Fig. 2 is a transverse section on the line 2-2 of 1, and Fig. 3 is an enlarged fragmentary view with one of the plates removed to show the arrangement of the pawls and associated parts. The illustrated embodiment of the invens tion comprises a tool having parallel bars 1 and 2 of bar metal. The bars 1 and 2 are spaced from each other, and formed on the outer edge of each bar is a series of rectangu lar teeth 3. The op osite ends of the bars 1 and 2 are closed by p ates 4, which are secured together by rivets 5 extendingthrough the bars.

Each pair of plates 4 is provided with registering openings 6 to permit/the insertion of a threaded bolt 7 to hold a clevis 8 in place. The bolt 7 is screwed into the outer arm of the clevis 8, as will at once be apparent. By removing the bolt 7, the clevis 8 maybe removed from one end and quickly and conveniently attached to the opposite end.

Slidable between the parallel bars 1 and 2 is an intermediate bar 9 having a clevis 10 detachably connected to the outer end thereof. The bar 9 may be inserted between the arallel bars 1 and 2 from either endthereo for purposes hereinafter described.

Disposed on opposite sides of and 1n transverse'relation to the bars 1, 2 and 9 are plates 10, and detachably connected to the plates 10 by boltand nut connections 11, is an operating handle 12. The outer ends of the plates 10 are held in spaced relation by a sleeve 18 through which extends a headed pin 14 held in place by a cotter pin 15. It will be apparent that the handle 12 and plates 10' form an operating lever, this lever being pivoted to the inner end portion of the intermediate bar 9 by a headed pin 16, which is held in place by a cotter pin 17.

Arranged on eachside of the intermediate bar 9 and engageable w th the rectangular teeth 3 on the bars 1 and-2 are pawls 1 8 which are pivoted on pins 19 intermediate the ends 1 thereof. A spring 20 is provided foreach pawl18for holding the inner end thereof in engagement'withthe teeth 3. The outer ends 21 of the pawls 18 extend inthe same direction and are substantially parallel to each other so that an operator may grasp the outer end portions 21 of both pawls in a convenient manner to move the inner ends thereof away from the teeth to permit the bar 9 to be adjusted in either direction.

As the parts are arranged in the drawings, it will be seen that vertical swinging move ment of the operating lever brings first one pawl and then the other into engagement with the respective teeth, thereby elevating the parallel bars 1 and 2 with respect to the intermediate bar 9. It is manifest that operation of the tool in this manner provides a jack to enable an object to be lifted'orto exert a pushing force against an object engaged by 1the clevis 8 or upper end portion of the too In order to adapt the tool for use in pulling an ob ect toward a stationary point, the cotter pin 17 is first removed and pin 16 withdrawn. The intermediate bar 9 may then be withdrawn from the parallel bars 1 and 2; Thereafter the clevis 8 is disengaged to 1 enable the intermediate bar 9 to be inserted between the parallel bars 1 and 2 from the opposite end of the tool. The clevis 8 may be attached to the lower end of the tool, and after again connecting the operating lever with the end portion of the intermediate bar 9 by the pin 16 and cotter pin 17, the tool is assembled for pulling. To and fro swinging movement of the operating lever gradually draws the outer end portion of the intermediate bar 9 inwardly toward the adjacent end of the parallel bars 1 and 2. The change of the parts so that the tool may be used for pushing orfor pulling is accomplished quickly and in the simple manner above described.

This tool has been found tobe of great utility in cable work and wire stretching. It is admirably adapted for the installation of telegraph and telephone lines, although it maybe used for many and varied purposes.

While I have shown and described a con struction which is the best form known to me at the present time, it is to be understood that numerous changes in details of construction and arrangement may be elfected without departing from the spirit of the invention, especially as defined in the appended claim.

What I claim as new and desire to secure by Letters Patent is:

A pushing and pulling tool including a pair of spaced bars each having teeth on the outer side edges of the bars, means connecting each of the ends of the bars so as to leave open space at each of the ends of the bars, an intermediate bar in the space between said pair of bars having attaching means on one end and having its opposite end formed to be selectively inserted in said open space at either end of the bars, a lever havin pawls to engage the teeth on each of the said pair of bars, means to removably pivot the lever to the intermediate bar, and attaching means removably engageable with either of said connecting means of the pair of bars whereby upon removal of the pivoting means and of said last named attaching means the inter-

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