US1327685A - Lifting-jack - Google Patents

Description

G. H. PAGE,

LIFTING JACK. APPLICATION FILED FEB. 2|. 19l6- ,/6 mggg l/VI/E/VTOR m H pdge' i Patented J an. 13; 1920.

rromvn'v v UNITED STATES PATENT OFFICE.

GEORGE H. PAGE, OF RICHMOND, MISSOURI.

LIETING-JAQ'K.

To all whom it may concern Be it known'that I, GEORGE H. PAGE, a citizen of the United States, residing at Richmond, in the county of Ray and State of-Missouri, have invented certain new and useful Improvements in Lifting-Jacks, of which the following is a full and exact specification. I

The present invention relates to lifting provide an improved arrangement and construction having provision for quick and convenient adjustment of the lifting lever to various heights whenever the device is to be used under circumstances requiring a slight change in the fulcrum position of the lever. To this end the invention provides a jack construction comprising a standard having a vertical series of fulcrum shoulders with any one'of which the lever may be quickly associated, together with a suitable keeper member of an improved type for cooperating with the standard to hold the lever with its fulcrum in proper'position during the jacking operation.

With this general object in view as well various minor objects as will hereinafter appear, the invention will now be described with reference to the accompanying drawing illustrating one form of embodiment of the improvements, after which those features and combinations deemed to be novel will be set forth and defined in the appended claims.

In the drawing Figure 1 is a side elevation of the ack, with one end portion of the lifting lever broken away;

Fig. 2 is a horizontal section taken along the line Ill-11 of Fig. 1; and

Fig. 3 is a vertical section taken along the line III-III of Fig. 1..

Referring to the drawing in detail, the improved jack is illustrated as comprising a standard made up of a pair of spaced upright members 2, 2, and secured in this relation by means of a spacing block 3 at the top and a spacin block 1 at the bottom, a base member 5 0 suitable width being also provided at the bottom for supporting the jack in proper vertical position. The front edges of the uprights 2 are formed with a vertical series of shoulders 6 arranged in pairs for supporting. the lever 7 and its pivot bolt 8 in various vertical positions; these front edges of the uprights are rein Specification of Letters Patent.

Patented Jan. 13, 1920.

Application filed February 21, 1916. Serial No. 79,589.

forced by suitable metal strips 9, and the load-supporting end of the lever is also gaged by one end of a link 12 pivoted at 13 between the uprights 2, and having a loop portion 1 1 for embracing the notched porti'on of the lever 7 jacks for wagons and the like, andaims to formed with a series of vertically spaced 7 .The rear edges of the uprights 2 are notches 15, also arranged in pa rs for en- .gagement by akeeper bolt 16 which is supported in the rear ends of a pair of strap elevation. Since the arrangement of shoulj ders described requires the uprights 2 to be of greater width from top to bottom, the

right angles to lines joining them to the corresponding shoulders 6. v j 4 j Provision is also made for a slight further adjustment of the lever, intermediate the adjustments above described. This is accomplished by forming a series of bolt openings 18 in the lever for adjustment of the bolt 8, whereby the latters position maybe changed either transversely .or longitudinally with reference to the lever and thus altering the fulcrum position of the latter for any one shouldered position of the bolt. It will thus be apparent that a simple and convenient construction has been devised for carrying out the desired objects of the invention. The levers position may be quickly changed to suit any ordinary height of wagon axle or other part to be lifted by simply raising the links 17 and bolt 16 along with the lever and shifting the bolt 8 to the proper shoulder 6, after which the keeper bolt 16 will, on releasing the links ;l '(,;drop into the corresponding pair of angles of the operative edges of the notches, are arranged accordlngly, being such as to bring said edges always at approximately may be attained by proper adjustment of the bolt 8 relatively to the bolt openings 18. When the lever has been operated it will be held in depressed position by means ofthe l nk 12 in the manner illustrated. A strong, durable and 111eXpens1ve constructlon is thusders, and a keeper member carried pivotally by saldbolt and cooperating with said notches for retaining said bolt in shouldered position i 2. A lifting Jack comprising a standard provided with a vertically arranged series of shoulders and a corresponding series of notches at the rear of said shoulders, a lifting lever provided with a pivot bolt adapted to be supported on any one of said shoulders, and means for retaining said bolt in shouldered position comprising a link pivoted to the bolt'and carrying a second bolt movable into engagement with one of said notches.

3." In a'l-ifting jack, a standard comprising a pair of spaced uprights each formed -w1th-a-vert1cal serlesof shoulders and a corresponding'series of notches at the rear of said shoulders, said shoulders and'notches I being arranged in pairs, a lifting lever mounted betweemsaid uprights and provided witha pivot bolt adapted to be supported on any one of said pairs of shoulders, and means for retaining said bolt in shouldered position comprising. ,a pair of links pivoted at their front ends to said bolt and supportinghat their rear ends a second bolt movable into engagement with a pair of said notches l. A liftin 'g jack comprising a standard gradually increasing in width from top to bottom and provided with a vertically-arranged seriesof shoulders and a corresponding series-of notches at the rear of said shoulders, a lever providedwith a pivot bolt adapted to be supported on any one of-said shoulders,and means forretalning said bolt in shouldered "position comprising a link piv oted -;tosaid bolt" and carryinga secondbolt movable into engagementwith one of said notches, the operative edgesyof said notches being arranged at approximatelyright angles to lines joiningithem with their corre-' sponding shoulders.

5. A liftingijack comprisinga standard provided with a vertically-arranged series of shoulders and a corresponding. series vof notches-at the rearof said shoulders, a lift ing a lever provided with: a pivot bolt adaptedito be supported on any one of said shoulders, and keeper means adjustableverticallyj in-unison with said :lever said keeper means comprisinga :yoke em racingvthe" standardand cooperating :with said notches for retaining said bolt in shouldered position. c

GEORGE Ill-PAGE.

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