US802522A - Carpenter's jack. - Google Patents

Description

No. 802,522. PATENTED OUT. 24-, 1905.

P. J. MQCULLEY.

GARPENTER$ JACK APPLICATION FILED MAYS, 19

2 SHEETS-SHEET 9 E I I 70/ l E I p;

No. 802,522. PATENTED OCT. 24, 1905. P. J. MGGULLEY.

OARPBNTERS JACK.

APPLIOATION FILED MAY 6, 1905.

2 SHEETS-SHEET 2.

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PERRY J. MGCULLEY, OF ANNONA, TEXAS.

CAHPENTERS \JACM.

Specification of Letters Patent.

Patented Oct. 24, 1905.

Application filed May 6,1906. Serial No. 259,188.

To (I/ZZ/ whom it may concern.-

Be it known that I, PERRY J. MoCULLnY, a citizen of the United States, residing at Annona, in the county of Red River and State of Texas, have invented certain new and useful Improvements in Carpenters Jacks, of which the following is a specification.

This invention comprises a novel form of jack designed particularly for use by carpenters or workmen in laying flooring, putting up siding, or any similar operations, the device comprising the invention being adapted to be secured to a joist, studding-post, or similar support convenient for forcing boards together in nailing the latter to the part to which they are to be secured.

it will be understood that the invention is suitable for various purposes wherein it is desired to accomplish work of a character similar to that above premised upon.

For a full description of the invention and the merits thereof and also to acquire a knowledge of the details of construction of the means for effecting the result reference is to be had to the following description and accoinpanying drawings, in which Figure 1 is a top plan view showing a device embodying the invention applied as when laying the flooring. Fig. 2 is a vertical longitudinal sectional view of the invention. Fig. 3 is a transverse sectional view bringing out more clearly the construction of the operating-lever. Fig. 1 is a view illustrating a modification of the invention in which the same is used for advancing a drill, reamer, or countersink in light work, the invention being readily susceptible of use for this purpose.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference-numerals.

Referring to the drawings, the numeral 1 designates the frame of the tool comprising this invention, said frame embodying, preferably, the sides 2 and the ends 3. Projecting downwardly from the sides of the frame adjacent the ends are lugs 4, having transverse apertures in which are mounted screws 5, by which the tool is adapted to be attached to a joist, post, or any other convenient support. lit is designed to use two screws at each end of the frame 1, the outer ends of the screws having suitable handles 6, and the inner ends are preferably pointed, so as to positively engage opposite sides of the support in positioning the frame with reference thereto. The ends 3 of the frame 1 are formed with longitudinal openings 7 and 8, the opening 8 receiving a sleeve 9, having swivel connection with the end upon which it is mounted. The sleeve 9 is formed at one end with an annular projection or flange 10 upon one side of the end 3, in which it is carried, the opposite end of the sleeve having a removable collar or similar member 11, which may be threaded or otherwise secured thereto. The end 33, carrying the sleeve 9 is arranged between the members 10 and 11 when the latter is properly mounted thereon, the sleeve being readily removable whenever necessary. An approximately rectangular opening 12 is formed in the sleeve 9, said opening receiving the square end portion 13 of a feed-screw 1 1, the threaded portion of said screw 14 operating through the opening 7 of the other end 3 of frame 1, the latter being interiorly threaded in order that as the feed-screw is turned said screw will be advanced or reversed in its movement, according to the direction of its rotation. Swivelly mounted upon an end of the feed-screw 14B is a work-engaging dog 15, and said dogis formed with outwardly-projecting spaced lugs 16. The outermost extremities of the lugs 16 are formed with transverse recesses 17 to receive the tongue of boards such as are used for flooring and like purposes. The construction of the swiveled dog 15 is advantageous in that the spaced arrangement of the members 16 admits of driving nails into the joist at an inclination from the tongue edge of the board, this being customarily done in fastening the boards, as will be obvious to those versed in this art.

In using the invention and describing the application thereof for flooring purposes, for instance, the frame 1 will be arranged so that the upper portion of a joist is received between the lugs 1, the screws 5 being then screwed into engagement with opposite sides of the joist to rigidly position the frame. The swiveled dog 15 is now arranged so as to engage the edge of the board, the tongue being received in the notches or recesses 17 of the lugs 16. The feed-screw 14 is now advanced by means of a ratchet-lever 18, which is carried by the square portion 13 of said screw. The ratchet-lever 18 is provided with the usual handle portion, and the lower extremity of said lever is formed with a head 19, consisting of spaced sides 20. The sides 20 of the head 19 of the lever are formed with transverse openings, in which the ends of IIO a sleeve 21 are mounted, said sleeve havinga square opening therethrough to receive the portion 13 of the feed-screw 1 1. A pinion 22 is secured to the sleeve 21 for rotation therewith, being mounted upon the sleeve between the sides of the head 19. Suitable dogs 23 are pivoted between the sides of the head 19, as shown at 24:, the lower extremities of said dogs being adapted to engage the pinion 22. A finger-piece 25 is pivoted at its inner end to the upper extremity of each dog 23, the outer end of the said finger-piece projecting through an opening 26 in an inclosing plate 27, one of which is attached to the head at opposite sides extending over the space between the members 20 thereof and housing the parts 22 and 23 and adjacent elements. The upper side of each finger-piece 25 has a notch 28 therein, so that said finger-piece may be forced inwardly and then engaged with the upper portion of the head by means of the notch 28, so that the lower extremity of the dog which is actuated by the finger-piece will be held out of engagement with the pinion 22. A spring 29 of approximately U form is arranged in the head 19 between the sides 20 thereof, the sides of said spring bearing against the inner side of the adjacent dog 23, so as to normally hold said .dog in engagement with the pinion. One of the dogs 23 will be thrown out of engagement with the pinion in operating the lever to advance the feed-screw 14L, and when it is desired to reverse the movement of the feedscrew that dog which has been in engagement with the pinion will be thrown out of engagement therewith, and the opposite dog will be thrown into engagement with the pinion by manipulation of the finger-pieces 25.

Under certain conditions the invention is designed for use in connection with means for drilling, reaming, or boring work, and in this instance the feed-screw 14: is removed from the frame 1. A set-screw is arranged The drilling mechanism would be operated by the ratchet-lever 18, before described, and comprises mainly feed means consisting of the members 36, each having a tubular internally-threaded body 36 and a square end 36*; The square end 36 of one member 36 is adapted to be inserted into the rectangular opening 12 of the sleeve 9, the similar end 36 of the other member 36 being likewise inserted in the opening of the sleeve 21 of the lever 18. A double-ended feed-screw 37 has its ends received by the internally-threaded body portions 36 of the members 36, and said feed-screw is adapted to be turned, by means of handles 38 at the center portion thereof, in order to properly advance the drill or tool 39 to the work. Said tool has its shank mounted in the sleeve 21 of the lever at the end opposite that receiving the portion 36" of one of the members 36. The tool is of course rotated by operating the lever 18, being advanced by the parts 36 and 37, aforementioned, in an obvious manner.

It will be apparent that the parts of the in vention may be readily taken apart or knocked down, so to occupy a minimum amount of space with advantages of obvious import.

Having thus described the invention, what is claimed as new is-.

In a jack of the type described, the combination of a frame, means for positioning the frame, said frame being provided with openings at opposite ends, one of said openings being threaded, a sleeve swivelly mounted in the other opening, a feed-screw embodying a square portion passing through the sleeve aforesaid and having the threaded portion thereof passing through the threaded opening in the frame, a work-engaging dog mounted upon said feed-screw, and an operating-lever for said screw.

In testimony whereof Iaflix my signature in presence of two witnesses.

PERRY J. MCOULLEY. [L. s]

itnesses:

Jon E. DANIEL, V. H. WOLF.

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