US967126A - Lifting-jack. - Google Patents

Description

G. E. HYLANDER.

LIFTING JACK. APPLICATION rum) 00m. 8, 1909;

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Patented Aug. 9, 1910.

G. E. HYLANDBR.

LIFTING JACK. APPLICATION FILED 00w. 8, 1909.

Patented Aug. 9,1910.

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UNITED STATES PATENT OFFICE.

CHARLES E. HYLANDER, 0F PITTSBURG, PENNSYLVANIA, ASSIG-NOR TO THE DUFF MANUFACTURING COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

LIFTINGr-JACK.

coarse.

To all whom it may concern:

Be it known that 1, CHARLES E. Hr- LANDER, of Pittsburg, Allegheny county, Pennsylvania, have invented a new and useful Improvement in Lifting-Jacks, of which the following is a full, clear, and exact de-v scription, reference being had to the accom panying drawings, forming part of this specification, in which Figure 1 is a side view showing one form of my improved jack illustrating its use in part; Fig. 2 is a front view of the same; Fig. 3 is a section on the line IIIIII of Fig. 2; and Fig. 4 is a detail view.

My invention has relation to the class of lifting jacks, and more particularly to car box jacks, and is designed to provide a jack having a wheel holding-down device of novel and efficient character, which device may also be made to serve as the handle of the jack.

The precise nature of my invention will be best understood by reference to the accompanying drawings, in which I have shown the preferred embodiment thereof, which will now be described, it being premised, however, that various changes may be made in the details of construction and arrangement of the parts without departing from the spirit and scope of my invention.

In these drawings, the numeral 2 designates the frame of the jack, 3 the lifting ram, 4t the actuating screw for the ram, 5 the actuating shaft operated by the ratchet lever 6 and ratchet 7 and 8 and 9 the bevel gearing connection between the shaft 5 and the screw shaft.

10 designates a lubricant reservoir in the base portion of the jack and having one or more passages 11 leading to the step or thrust bearing 12 of the screw shaft.

13 is a pin which is seated transversely across one side of the jack frame near its upper end, and which is adapted to engage the flattened side 14L of the ram 3 to act as a guide therefor.

The wheel holding-down device consists of the two thrust members 15, which are connected at their lower ends by a transverse bar or pin 16, and which are arranged to slide through buckles 17 which are pivotally secured on the ends of the pin 13. These thrust members are formed with a Specification of Letters Patent.

Application filed October 8, 190B.

Patented Aug. 9, 1910.

Serial No. 521,762.

series of notches 18, any one of which is adapted to be engaged with a fixed tooth 19 on the buckle 17 through which the thrust member passes, and thus lock the thrust member therein. The device also comprises.

series of teeth 20 any one of which is arranged to engage with a tooth 22 on the buckle or guide 21, as shown in Figs. 1 and 4:.

As will be understood from the drawings, there is one pair of thrust and tension members at each side of the jack, the two tension members being connected by the transverse bar 16, which also serves for the pivoted connection of the tension members with the thrust members.

The ends of the thrust members are arranged to contact with the flange of a car wheel in the manner shown in Figs. 1 and 3. The tendency of the wheel to lift causes the thrust and tension members to be firmly locked in their respective buckles or guides, thus holding the wheel down and preventing it from lifting. The buckles or guides are always kept engaged with the notches of the thrust and tension members by gravity. By swinging the buckles 011 their pivots, the thrust and tension members can be adjusted at various angles, according to conditions, this adjustment being in a horizontal or in a vertical direction.

The thrust and tension members, when desired, may be drawn through the guides or buckles and turned upwardly into the position shown in dotted lines in Fig. 1 to form a handle for the jack. The free ends of the thrust members are provided with pins 23 to prevent them from pulling through and out of the guides or buckles when the jack is being carried.

Those features of the jack herein shown and described, but not claimed, form the subject-matter of a co-pending application of myself and George F. Freed, Serial No. 521,763.

I do not herein limit myself to the use of the wheel holding-down device described in connection with the particular form of jack shown, since such device may be used with various other constructions of jack.

hat I claim is 1.. The combination with a jack frame, of a wheel holding-down device comprising a thrust member arrangedto engage the flange of a car wheel, a tension member connected to the thrust member, and guide members connected to the jack frame and having means for securing the thrust and tension members in different positions; substantially as described.

2. In a lifting jack, the combination with a jack frame, of a holding-down device comprising a pair of thrust members, a pair of tension members connected to the thrust members, and guides pivotally connected to the jack frame and having means for adjustably securing the thrust and tension members therein; substantially as described.

3. In a lifting jack, the combination with a jack frame, of a holding-down device comprising upper and lower guide members pivotally connected to each side of said frame, a pair of thrust members loosely engaging the upper guide members, and a pair of tension members connected to the lower ends of the thrust members and loosely engaging the lower guides, said members and guides having means whereby the thrust and tension members may be adjustably locked therein; substantially as described.

4. In a lifting jack, the combination with a jack frame, of a wheel holding-down device comprising notched tension members, notched thrust members pivotally connected to the tension members, and guides pivotally attached to the jack frame and having respectively openings therethrough for the thrust and tension members and also each provided with a tooth adapted to engage in one of the notches of the thrust or tension member fastened therethrough substantially as described.

5. The combination with a lifting ack, of a wheel holding-down device comprising a pair of connected thrust members adapted to engage the flange of a car wheel, a pair of tension members pivotally connected to the jack frame and having means for locking the thrust and tension members in different positions therein, said members being adapted to be moved into position to form a handle for the jack; substantially as described.

In testimony whereof, I have hereunto set my hand.

CHARLES E. I-IYLANDER.

H. M. CORWIN.

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