US2341106A - Post puller and the like - Google Patents

Description

Feb. 8, 1944.

F. KUZELA POST FULLER AND THE LIKE Filed March 15, 1943 2 Sheets-Sheet 1 W E n Home Feb. 8, 1944. F. KUZELA 2,341,106

POST FULLER AND THE LIKE I Filed March 15, 1943 2 Sheets-Sheet 2 I .9 j a I l I Im mfor Em t fliozelw 'QZ K M W MJQQ Patented Feb. 8, 1944- UNITED STATES PATENT OFFICE POST PULLER AND THE LIKE Frank Kuzela, Tyndall, S. Dak.

Application March 15, 1943, Serial No. 479,272

3 Claims.

This invention relates to new and useful improvements in mechanical jacks and more particularly to a jack especially adapted for pulling posts and like structures.

The principal object of the present invention is to provide a jack or lifting implement whereby various items such as posts, automobiles and other heavy and resistable objects can be lifted conveniently by direct manual efiort.

Other objects and advantages of the invention will become apparent to the reader of the following description.

In the drawings:

Figure 1 represents a side elevational view of the jack applied to a post.

Figure 2 is a side elevational view of the jack shown applied to a post, the operating arm in section.

Figure 3 is a fragmentary sectional view taken substantially on the line 3-3 of Figure 1.

Figure 4 is an elevational view of one of the pawls.

Figure 5 is a fragmentary side elevational view showing a modified lifting element.

Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral 5 denotes a post to be pulled. Numeral 6 generally refers to the improved jack and this includes a base frame 'I from which rises a multilegged stand 8 secured at its upper portion by elements 9 to a vertically disposed toothed bar II], this bar having pocketed teeth II along one edge thereof.

Numeral I2 denotes a slide having guides I3, I I adjacent the upper portion thereof for embracing the bar I0. Hook members I5 are provided on the slide I2 for engaging a chain or like element I6 which, of course, will be disposed around the post 5 or other structure to be lifted.

In place of the chain I6, a swingable foot structure Il may be employed at the lower portion of the slide I2 by disposing a suitable securing element I8 through the foot structure I1 and through an opening I9 in the lower portion of the slide.

A lever 20 having an elongated handle 2| has a forked portion, the legs of which straddle the bar In and slide I2. A bolt 22 extends through the free end portions of the forked portion of the lever 2|] and through the upper portion of the slide I2, also passing through the leg portions of a U-shaped pawl 23, the bight portion of which is adapted to engage the teeth II of the bar I0. One or more springs 24 are interposed between the pawl 23 and an anchor on the slide I2 in order to hold the pawl 23 firmly against the toothed edge of the bar III.

A second U-shaped pawl 25 has laterally disposed end portions 26, 2B which are disposed through openings in the leg portions of the lever 29 and equipped with nuts 21 to prevent displacement thereof.

.In the operation of the device, it can be seen that when the chain I6 is in place on a post or other structure 5, the jack is ready for operation. By pushing downwardly on the handle 2|, the slide I2 will be lifted as well as the pawl 23 due to the action of the spring 24, the pawl as it elevates to the next overlying tooth I I will snap into the tooth for holding the slide I2 and the object 5 at this new elevation, while the fulcrum pawl 25 is elevated to the next overlying tooth by moving the handle 2I in the opposite direction. This operation is repeated as long as lifting action is necessary.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as clamed hereinafter.

Having described the invention, what is claimed as new is:

1. A jack of the character described comprising a. base structure, a bar rising from the base structure and provided with pocketed teeth along the rear edge portion thereof, a vertical slide extending along the front edge of said bar, means on the slide for engaging work, a swingable lever having a handle and forks extending forwardly therefrom, a U-shaped front pawl straddling the bar and slide with front ends of its arms disposed between the slide and front ends of the forks, a pin passing through the slide and overlapped portions of the pawl and forks and pivotally mounting the pawl and the lever, and a rear U- shaped pawl straddling the bar and pivoted to the arms of the lever.

2. A jack of the character described comprising a base structure, a bar rising from the base structure and provided with pocketed teeth along its rear edge portion, a vertical slide at the front of the bar, guide means between the slide and the bar, means on the slide for gripping work, a vertically swingable lever having forks pivoted to the bar and a rearwardly extending handle, said forks extending forwardly at opposite sides of the slide and pivotally connected to the slide, and front and rear pawls straddling the bar and cooperative with the teeth of the bar, the front pawl being pivotally mounted at the pivotal mountings for front ends of the arms and being substantially longer than the rear pawl land operating in teeth above the; rear pawl.

3. A jack of the character described comprising a base structure, a bar rising from the base structure and provided with pocketed teeth along the rear edge face thereof, a vertical slide disposed against the front edge face of said bar, guide means carried by the slide and engaged about the bar, means on the slide for engaging about and gripping work, a swingable lever hav- 10 position.

FRANK KUZELA.

Images