US953596A

US953596A - Jack.

Info

Publication number: US953596A
Application number: US51217109A
Authority: US
Inventors: James Corbitt
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-08-10
Filing date: 1909-08-10
Publication date: 1910-03-29
Anticipated expiration: 1927-03-29

Description

J. GORBITT.

JACK.

APPLICATION FILED AUG.10, 1909.

Patented. Mar. 29, 1916.

JAIVIES CORBITT, OF

JAG

RELEY, FLOEIDA.

assess.

Specification of Letters Eatent.

Patented liiiar. 29, rare.

Application filed August 10, 1969. Serial No. 512,1?1.

To all whom it may concern:

Be it known that 1, JAMES Connrr'r, a citizen of the United States, residing at Riley, in the county of Manatee and State of Florida, have invented certain new and useful Improvements in Jacks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to new and useful improvements in jacks and more particularly to that class adapted to be used for laying flooring, or the like, and my object is to provide a device of this class whereby the sections of the flooring may be forced into engagement with each other and the tongues thereon entered into the grooves of the next succeeding section.

further object is to provide suitable leverage for operating the jack and a still further object is to provide means tor holding the board in its adjusted position until such time as it can be secured by nailing or otherwise.

Other objects and advantages will be here inat'ter referred to and more particularly pointed out in the claims.

In the accompanying drawings forming part of this application, Figure 1 is a side elevation of the jack as applied to use, and, Fig. 2 is an edge elevation thereof.

Referring to the drawings in which similar reference numerals designate corresponding parts throughout the several views, 1 indicates the main bar of my improved jack, to the lower end of which is attached a spike or prong 2, while the upper end thereof terminates in a handle section 3, whereby the bar may be readily operated.

Pivotally attached to the bar 1 at a point between its longitudinal center and its lower end, is a lever t, which lever is attached to the shank 5 of the clamping head 6 through the medium of a pitman 7, the lower end of the pitman being pivotally attached to the free end of the shank 5, while the upper end thereof is pivotally secured to the lever at at a pointabove the pivotal connection of the lever d with the bar 1 and in order to cause the pitman to move the clamping head and shank lengthwise and against the section of flooring 8, links 9 are extended from the pivoted end of the lever t to the pivotal connection of the pitnian with the shank, thereby holding the pitman in fixed relation with tile lever 4, this form of construction forming a rigid connection between the lever and shank.

The shank is bifurcated to receive the bar 1 and said shank is prevented from casually leaving the bar by placing shoulders 10 at the lower end of the bar and extend ing the same outwardly therefrom and below the shank 5 thus supporting the shank when not in use.

in applying the jack to use, the spike 2 is forced into the joist or sill 11 and the bar 1 held sulistantially vertical, when the recess 12 of the read (3 is engaged with the tongue 13 of the flooring 8 and the lever at then swung on its pivot, moving the upper end thereof away from the bar 1, this operation giving a forward thrust to the clamping head and moving the section oi flooring into proper position when by engaging a latch 14L pivoted to the bar 1 with notches 15 on the lever the head will be securely held against the section of flooring, whereby the attendant can release his hold on the lever and bar and secure the section of flooring by nailing or otherwise. he soon the section of flooring has been properly secured, the latch 14: is released and the lever at swings toward the bar 1, which will result in moving the clamping head from engagement with the flooring, when the bar to be moved along the sill the proper distance to engage the nextsucceeding section of flooring and the spike 2 then forced into the sill, when the clamping operation may be repeated.

It will thus be seen that l have provided a very economical term of jack and one that can be quickly applied to use. it will further be seen that a very strong leverage may be obtained by attaching the lever to the clam ping head in the manner shown and further that the section of flooring may be positively held in its adjusted position until such. time as the flooring can be secured in position.

What l: claim is:

1. ii jack comprising a bar having anchoring means its lower end, a lever pivoted to said bar, a clamping head, a shank on said clamping head, a pitman connecting the shank to the lever and links connecting the pivotal end of said lever to the end oi? said shank.

A jack ot the class destn'ibed, coinpris ing the combination with a bar having a latch pivotally mounted thereon; of a lever said head through which the bar extends pivoted to said bar, a clamping head, a Y

and means to hold the lever in fixed position I bifurcated shank on said head, through l which the bar extends, means to anchor the 1 with respect to the bar. lower end of the bar and additional means i In testimony whereof I have signed my to attach the shank to said lever. name to this specification in the presence of 15 l l l 1 3. A jack of the class described, compristwo subscribing witnesses. ing a bar having shank supporting shoul- JAMES GORBITT.

ders and a downwardly extending spike at li itnesses: the lower end thereot, a lever plvoted to said THOMAS J. BRYAXT, bar, a clamping head, a biturcated shank on D. R. POPE.