US2507769A - Carloading jack - Google Patents

Description

May 16, 1950 a. L. CHURCHILL CAR LOADING JACK 2 Sheets-Sheet l Inventor Basil L. Churchill B and Filed July 3, 1947 Wave 3 M3813 May 16, 1950 B. L. CHURCHILL 2,507,769

CAR LOADING JACK Filed July 3, 1947 2 Sheets-Sheet 2 Fig.2

Inventor 5 Basil L. Churchill 2mm (ma W ZYM Patented May 16, 1950 UNITED STATES PATENT OFFICE CARLOADING JACK Basil L. Churchill, Brewster, Wash.

Application July 3, 1947, Serial No. 758,796

1 Claim. 1

My invention relates to improvements in car loading jacks for loading freight cars, trucks, and the like, with case goods.

The primary object of my invention is to provide a simply constructed, inexpensive, easily handled jack for shifting tiers of cases, or boxes, sidewise to facilitate packing such tiers tightly in freight cars, trucks, and similar vehicles, thereby saving considerable time and labor through eliminating shifting of cases, or boxes, singly, as is frequently found necessary in loading such goods tightly in cars, and trucks, according to present day practice.

Other and subordinate objects, also comprehended by my invention, together with the precise nature of my improvements, and the advantages thereof will be readily understood when the succeeding description and claim are read with reference to the drawings, accompanying and forming part of this specification.

In said drawings:

Figure l is a view in front elevation of my improved car loading jack in a preferred embodiment thereof;

Figure. 2 is a view in side elevation;

Figure 3 is a view in vertical central section taken on the line 3-3 of Figure 1;

Figure 4 is a view in plan;

Figure 5 is a view in transverse section taken on the line 5-5 of Figure 1 and drawn to a larger scale;

Figure 6 is a view in perspective of one of the srtaddle bars; and,

Figure 7 is a view in transverse section taken on the line 'l--'I of Figure l and drawn to a larger scale.

Referring now to the drawings by numerals, my improved jack in the illustrated, preferred, embodiment thereof comprises an elongated rectangular spreader frame A including side pairs of 5 angle iron pusher bars I, 2, the bars in each pair being arranged parallel and spaced apart laterally, by means presently described, in opposed relation with the channel sides of each pair facing those of the other pair. The pairs of pusher bars I, 2 may be of any suitable length for standing upright in a freight car, or truck, not shown.

Upper and lower end pairs of guide arms 3, 4, suitably connected, respectively, at one end between the pairs of pusher bars I, 2, as by welding, not shown, are arranged in side by side sliding relation in each pair and guided for relative sliding movement by guide loops 5 suitably fixed to said arms. As will be obvious, the guide arms 3, 4, provide for lateral adjustment of the pairs of, pusher bars I, 2 toward and from each other, respectively, while maintaining said pairs of pusher bars I, 2 parallel.

A pair of small ground wheels 6 are mounted in brackets I on one bar of the pairs of pusher bars I, 2, adjacent lower ends of said pairs to extend in planes at a right angle to the plane of the spreader frame A, the arrangement being such that the pair of wheels 6 will be lifted off the floor, or deck, of a freight car, or truck, when the spreader frame is upright and substantially perpendicular to a floor, or deck.

Upon oppositev sides of the transverse center of the spreader frame A, multiple pairs of upper and lower toggle links 8, 9, I0, II are pivoted, as at I2, I3, I4, I5 between the pairs of pusher bars I, 2, the links in each pair of toggle links being pivoted together at inner ends thereof, as at I6, Il, l8, I9 to break downwardly in the upper pairs of links, and upwardly into lower pairs of said links and in a common plane with the spreader frame A. Spacing collars 20 on the pivots I2, I3, I4 I5, together with said toggle links 8, 9, III, II space the pusher bars I, 2 apart in each pair sufficiently to permit free play of said links between said pairs of pusher bars.

A pair of upper and lower straddle bars 2|, 22 connect the upper and lower pairs of toggle links, the upper straddle bar 2I connecting the upper pairs of toggle links 8, 9, and the lower straddle bar 22 connecting the lower pairs of toggle links III, II, said straddle bars 2|, 22 being formed with enlarged heads 23 facing each other in spaced apart relation upon opposite sides of the transverse center of the spreader frame A and serving a purpose presently seen. The connections between the pair of straddle bars 2|, 22 and the pairs of toggle links 8, 9, Ill, I I comprise the pivots I6, I1, I8, I9 which take the form of removable bolts, for a purpose presently seen.

A conventional pump type jack 24 is provided for use, as presently described, between the heads 23 of the straddle bars 2|, 22 to force the same apart, said jack having the usual operating handle 25. The jack 24 may be pneumatic or hydraulic.

Centerhandles 26 are provided on one bar of the pairs I, '2 for lifting the described spreader frame A into upright position and for wheeling the same.

Referring now to the use and operation of the invention, as so far described, the spreader frame is wheeled on the wheels 6 in the proper position between two tiers of cases, or boxes, not shown, and then swung into upright position with the 3 lower guide loops 5 of the lower pair of guide arms 4 resting on the floor, or deck, of the freight car, or truck, not shown. This lifts the wheels 6 off the floor, or deck, and the lower ends of the pairs of pusher bars I, 2 together with the lower pair of guide arms 4, as shown in Figures 1, 2 and 3. Now, by operating the pneumatic jack 24, the heads 23 of the straddle bars 2|, 22 will b forced apart to thrust the pair of straddle bars 2|, 22 outwardly, relatively, and thereby straighten out the pairs of toggle links 8, 9, IO, N to spread the pairs of pusher bars I, 2 apart forcing the tiers apart in a manner which will be readily understood. When the pairs of pusher bars I, 2 have been sufficiently spread, the mentioned jack 24 is released and removed, and the pairs of toggle links 8, 9, I0, I I may be broken to draw said pairs of pusher bars I, 2 together as required.

For breaking the pairs of toggle links 8, 9, H],

H, a hand lever 21 is pivoted, as at 28, intermediate its ends, on the lower straddle bar 22 to swing about an axis transverse to the plane of the frame A, and is suitably connected at one end by a chain 29 to the upper straddle bar 2|, so

the purpose of adjusting the upper pairs of toggle links 8, 9 relative to the pairs of pusher bars I, 2 and relative to the straddle bars 2| to obtain variable spreading of the spreader frame A with a given stroke of the mentioned jack 24. Longitudinally spaced bolt holes 32 are provided in the lower straddle bar 22 for adjusting the pivots l8 along the same for the same purpose. Extra bolt holes 33 in the pairs of toggle links 8, 9, IO, U provide for adjustment of the links of said pairs, relatively, to vary the distance the frame 4 A will spread, with a given degree of movement of said pairs of toggle links.

The foregoing will, it is believed, suifice to impart a clear understanding of my invention, without further explanation.

Manifestly, the invention, as described, is susceptible of modification without departing from the inventive concept, and right is herein reserved to such modifications as fall within the scope of the appended claim.

What I claim is:

In a jack of the class described, an elongated rectangular spreader frame comprising side bars, pairs of guide bars at opposite ends of said frame connecting said side bars together and relatively slidable in each pair to provide for adjustment of said side bars laterally relatively to spread said frame, multiple pairs of toggle links connecting said side bars on each side of the transverse center of said frame and operative oppositely upon opposite sides of said transverse center into dead center position to adjust said bars and spread said frame, spaced apart longitudinal pusher bars in said frame operative in separative direction to operate said pairs of toggle links, a jack removably mounted between the pusher to separate the same, and means for breakring said pairs of toggle links out of dead center position when the jack is removed comprising a hand lever pivoted on one pusher bar, and a flexible connection between said lever and the other pusher bar.

BASIL L. CHURCHILL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,206,68 Bacon Nov. 28, 1916 1,517,100 Bacon Nov. 25, 1924 1,833,016 Chandler Nov. 24, 1931 2,070,970 Engblom Feb. 16, 1937 2,086,283 Pierce July 6, 1937

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