US947071A - Tie-jack. - Google Patents

Description

, O. BERKNER.

TIE JACK.

APPLIOATION FILED JULY 17, 1909.

947,071 Patented Jan. 18, 1910.

ATTORNE 78 67/5/7455 Bra/Maw,

CHARLES BERKNER, 0F LIT HFIELD, MINNESOTA.

TIE-JACK.

Specification of Letters Patent. P t t d J n, 18, 1910.

Application filed July 17, 1909. :Serial No. 508,236.

To all whom it may concern:

Be it known that I, CHARLES a citizen of the United of Litchfield, in the State of Minnesota,

'BERIQNER, States, and a resident county of Meeker and which the following is a specification.

This invention is an improvement in tie jacks especially designed for use in lifting rail road ties and supporting the same be neath a rail during the spiking of the rail to the tie, and the invention consists in certain novel constructions and combinations of parts as will be hereinafter described and claimed.

In the drawing: Figure l is a side elevation of a jack embodying my invention as in use, Fig. 2 is a detail section on about line 2-2 of Fig. l, and Fig. 3 is a detailside View, parts being broken away and parts shown in section illustrating in connection with the ratchet 0r lifting bar, the lifting dog and the detent pawl.

The tie jack has a frame A Whose legs A rest on feet A and support at their upper ends a top frame A which has a base plate A provided with an opening at A for the lifting dog opening at A formlng a passage and guide for the lifting bar and at its upper side the top frame supports the detent pawl D which is pivoted at one end to the frame or-stand for the jack and engages at its point D with the lifting bar when arranged as shown in Figs. 1 and 3. To adjust the detent pawl out of engagement with the rack bar' B, I

provide a rocker in the form of a small lever E, pivoted at E and having a handle bar E and a crank projection E which underlies the detent pawl and operates, when the rocker is adjusted as indicated in dotted lines in Fig. 3, to throw the detent pawl back clear of the lifting or rack bar.

The lifting bar is provided along one edge with a series of ratchet teeth B for engagement by the lifting dog and detent pawl and has its lower end forked at B and provided with a roller B over which passes a chain F connecting the upper ends of the arms G of a pair of tongs p1voted together at G,

and pointed at their lower ends at enter a tie as shown in Fig. 1.

The rocker E supports the detentpawl G to when'the latter is lowered as shown in Fig.

have made certain new and useful Improvements in Tie-Jacks, of,

" In operation,

for the; lifting bar B and also forming at A a rest 0 presently described. The top frame also has at its upper side an 1, while the pawl may freely rise-on the upward movement of the lifting bar.

The lifting dog embraces the lifting bar" provided wlth an opening C through being which the bar B passes, and the front wall of sa1d openmg C forms a tooth C to engage the ratchet teeth at the front edge of the lifting bar while the rear end of the. dog fulcrums upon the frame or stand at A as before suggested. f 1

At its front end the dog C is connected by a link H, withone end of be rocked to oscillate the tooth C and same to operate upon the ratchet teeth to raise the lifting bar and then move down along the same for another operation, the

alever I which is pivoted at I .to the frame or stand, and may cause detent pawl meanwhile retaining the lifting bar in position to which it" has been elevated. as the lever is depressed, it lifts the dog and raises the bar; then when the lever is lowered it will lower the dog .until the rear end thereof comes in contact with the frame or stand and causes the front or toothed end of the dog to release itself from the ratchet bar.

The inner arm of the lever I projects in-- wardly beyond the point of connection of the link H with the dog C as best shown in Fig. 1. It will also be noticed from said figure that the dog C when lowered with the rack baruwill come into,contact with the frame at the point A", thus releasing the square link or dog C or the tooth 0 thereof fromuthe notched 'bar and release the load and permitting the notched bar with the load to drop down automatically when the upper dog E is released. A a

The feet or foot plates A of the frame are jmade broad, usually about six inches w id'e by twelve inches long and-the spread of the jack frame is usually about 36 inches from center to center and it thereby enables the operator to catch the supports in any ordi-.

nary rail road for hisjack. v

The pulley and chain supporting the tongs enables an operator to conveniently manipulate the tongs to catch a tie of almost any form of side provided it has a flat sur; face for the rail base, and thereby enables the operator to bring the tie firmly in contact with the rail and retain it in proper contactwith the rail during. the spiking operation. I l This' ackwill enable one man to replace t1es in their proper position 111 the railroad,

by the use of the present invention, the tie will at all times when spiked be firmly attached to the rail under at least a 2500 pound pressure and be thereby suspended while being spiked before being tamped and then the jarring of the spiking will not loosen the tamping as the tie may and will be invariably tamped after it is spiked to the rail and then'the tie will support the rail and its load as is not always the case at present.

The jack is especially intended and made for railroad purposes and the repair of old roads and the replacing of new ties for old.

The jack will not weigh to exceed seventy pounds, is practically indestructible and can be easily operated by any common laborer of reasonable intelligence.

I claim- 1. A tie jack comprising a frame having legs which spread toward their lower ends and are provided with broad feet, a top frame having a base plate provided with an opening for a lifting bar, a lifting bar extending through said opening and toothed at one edge, a lifting dog above the base plate of the top frame and embracing the lifting bar and provided with an opening for the lifting bar and at the front end thereof with a tooth to engage those of the lifting bar, a lever pivoted above said dog, a link connecting the front end of the dog with the lever and inclining inwardly toward its connection with the lever whereby to draw the dog into engagement with the lifting bar, a detent pawl engaging the lifting bar, a roller at the lower end of the lifting bar, a chain over said roller, and a pair of tongs whose arms are connected with said chain all substantially as and for the purposes set forth.

2. A tie jack having a frame provided with a plate having an opening for a lifting bar, a lifting dog above said plate and embracing the lifting bar and having a tooth engaging said bar, a lever above the dog, a link connecting the dog with the lever and inclining inwardly toward its connection with the lever and adapted to draw the dog into engagement with the lever, and a detent, substantially as set forth.

3. The combination in a tie jack of a frame, a lifting bar, a dog embracing the bar and having means to engage the lifting bar, a lever above the dog, a link coimecting the dog and lever, a detent, and means carried by the lifting bar for engaging a tie, substantially as set forth.

i. The combination of a top frame having a base plate provided with an opening for a lifting bar, a lifting bar operating in said opening, a detent at the upper end of the top frame and engaging the lifting bar, a lifting dog above the base plate and having an opening receiving the lifting bar whereby the dog when raised by the lever will come into contact with the notched bar and engage with said bar without the said dog resting on the base plate, and when the detent dog is released the lifting dog may be dropped with the load until the engagement of its rear end with the base plate will free the lifting dog from engagement with the notched bar and permit the said notched bar and the load to drop, a lever above the dog, and connected therewith, and means carried by the lifting bar and adapted to engage with a tie for lifting the same.

5. A tie jack comprising a frame, a lifting bar, means carried by the frame for operating the lifting bar and including a dog fulcruming at one end on the frame, a lever, and a link connecting the other end of the dog with said lever, and means carried by the lifting bar for engaging a tie, substantially as set forth.

6. The combination in a tie jack of a frame, a lifting bar, means carried by the lifting bar for engaging a tie, a lifting dog fulcruming at one end on the frame on one side of the lifting bar, and having means for engaging the lifting bar at the opposite side of said bar from the fulcrum point, and a lever operating upon the end of said dog on the side of the lifting bar engaged by said dog, substantially as set forth.

CHARLES BERKNER.

Witnesses LUKE K. SEXTON, New J. NELSON. f

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