US1238863A - Jack. - Google Patents

Description

LE ROY WILLOUR.

JACK.

APPLICATION FILED MAR. 14. 1917.

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LE ROY WILLOUR, 0F ASHLAND, OHIO, ASSIGNOR TO THE ASI-ILAND ERODUCTS (30., OF

ASHLAND, OHIO, A CORPORATION OF OHIO.

JACK.

masses.

2' '0 all whom it may concern:

Be it known that 1, Ln ROY WILLOUR, a citizen of the United States, residing at Ashland. in the county of Ashland and State of Ohio, have invented certain new and useful Improvements in Jacks, of which the following is a specification.

My invention relates broadly to acks and has particular reference to improvements 1n means for securing the. operating lever or handle to the standard of the jack.

The invention aims to provide means whereby the construction of the jack may be simplified, thus effecting a saving in the cost of manufacture, besides providing a construction which is compact, strong, and durable.

Other objects and advantages of the invention will be apparent-during the course of the following description.

In the accompanying drawings forming a part of this specification and inwhichv like numerals are employed to designate like parts throughout the same,

Figure 1 is a side elevation of a Jack embodying my invention,

Fig. 2 is a similar view taken at right angle to Fig. 1,

Fig. 3 is a vertical sectional view taken on line 33 of Fig. 1, and,

Fig. l is a horizontal sectional view taken on line H of Fig. 1.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 10 designates a hollow standard, which is preferably substantially rectangular in cross-section, as more clearly shown in Fig. 4;. This standard 10 is provided at its lower end with a base or foot 10" and near its upper end with an opening 11. The bore or opening of the standard 10 is also substantially rectangular in cross-section, as shown At its upper end, the standard 10 is prov dedwith a tubular extension 11, rotatably rece ving a screw 12, mounted to reciprocate w1th1n the standard. This screw is prevented from rotating upon its longitudinal axis by means of a block 18, secured to the lower end thereof, and slidably fitting within the hollow standard 10. The upper end of the screw 12 has swiveled connection with a rest 14.

Having screw-threaded engagement with the screw 12 is a horizontal bevel-gear 15,

Specification of Letters Patent.

latented Slept. all, 1917..

Application filed March 14, 1917. I Serial No. 154,858.

slidably contacting with the tubular extension 11, as shown. In permanent engagement with the bevel-gear 15, is a vertical bevel-gear 16, having a tubular hub 17, which is cylindrical with its outer and inner surfaces preferably milled. The tubular hub 17 is rotatably mounted within a bearing-sleeve 18, rigidly connected or formed integral with the standard 10. At the inner end of the bearing-sleeve 18, the standard 10 is provided with a recess or chamber 19, opposite the opening 11, as shown. The bevel-gear 16 is provided upon its periphery with radially extending teeth, 20, as shown.

The numeral 21 designates an operating lever, provided near its forward end with a crank 22, having a double acting pawl 23 pivoted thereto. This pawl carries a lateral extension or pin 24, adapted to be employed in throwing the pawl to positions upon opposite sides of the crank 22. Rigidly secured to the lever 21 and preferably formed integral therewith, at the forward end of the same, is a stub shaft or trunnion 25, which is preferably milled and is pivotally mounted within the tubular hub 17. The stub shaft 25 extends inwardly toward the chamber 19 and carries at its inner end a washer 27, arranged within the chamber 19, and eX- tending radially and outwardly beyond the tubular hub 17, for contact with a shoulder 28. The'innerend of the stub shaft 25 is flattened or spread, providing a head, for permanently attaching the washer 25 there to. It is apparent that the washer 27 is securely mounted upon the stub-shaft 25, and will retain the tubular hub 17 within the bearing-sleeve 18, and the stub-shaft 25 within the tubular hub 17.

In assembling the various parts of the jack, the tubular hub 17 is inserted within the bearing-sleeve 18, the stub-shaft 25 of the lever 21 is passed into the tubular hub 17, the washer 28 is then placed upon the inner end of the stub-shaft by passing the same through the opening 11. The outer end of the stub-shaft 25 may be placed upon an anvil or the like, and subjected to the hammering action of a suitable tool, to spread or flatten the end of the stub-shaft, thus providing the retaining head. The screw 12 is now passed into and through the lower end of the standard until the same projects beyond the upper end thereof. The horizontal bevel-gear 15 is placed upon the screw in engagement with the vertical bevelgear, subsequently to which the rest 14 is attached to the upper end of the screw, thus completing the assembling of the various parts.

In operation, by swinging the lever in opposite directions, the pawl 23 will contact with the teeth 20 of the bevel-bear 16, thus rotating the same in one direction. When the pawl is thrown to the opposite side of the crank 23 it will rotate the bevel-gear 16. in an opposite direction. The rotation of the bevel-gear 16 is imparted to the hori zontal bevel-gear 15, which raises or lowers the screw 12.

It is tov be understood that the form of my invention herein shown and described is to be taken as a preferred example of the same and that various changes in the shape, size, and arrangement of parts, may be resorted to without departing from the spirit of my invention or the scope of the subjoined claims.

Having thus described my invention what I claim is In a jack of the character described; the combination with a hollow standard provided near its upper end with an approximately horizontal bearing-sleeve cast intogral therewith, said standard having an interior chamber ht the base of the bearingsleeve, forming therewlth an interlor shoul- "der; a lift screw mounted to move longitudinally within the hollow standard; an

approximately horizontal bevel-gear carried and entering the bearing-sleeveto be pivotally supported thereby; an operating lever arranged outwardly of and near the approximately vertical bevel-gear, and having a stnb-shaft formed integral therewith and pivotally mounted within the tubular hub and projecting inwardly beyond the same; and a member carried by the inner end of the stub-shaft, arranged within the interior chamber, and extending radially outwardly beyond the tubular hub and disposed to contact withthe interior shoulder thus serving to retain the stub-shaft in place.

In testimony whereof, I afiix my signa;

ture in presence of two witnesses.

' LE ROY WILLOUR.

Witnesses:

JOHN KINDLE,

ANNA ECHELBERGER.

(topics: of this, patent may be obtained for five cents each, by addressing the. -Commi'ssiune'r of Iatents, Washington, 11.0? i i

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