US2456878A

US2456878A - Timberman's jack

Info

Publication number: US2456878A
Application number: US575442A
Authority: US
Inventors: Helen G Krupka; Krupka Joseph Jack
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-01-31
Filing date: 1945-01-31
Publication date: 1948-12-21
Anticipated expiration: 1965-12-21

Description

- Dec. 21, 1948. H. G. KRUPKA ET AL 2,456,873

'IIMBERMAN S JACK Filed Jan. 51, 1945 5 Sheets-Sheet 1 Inventor Dec. 21', 1948.

H. G. KRUPKA ET AL TIMBERMAN S JACK 3 Sheets-Sheet 2 Filed Jan. 31 1945 Attorneys Dec. 21, 1948. H. G; KRUPKA ET AL v 2,456,878

TIMBERMAN S JACK Filed Jan. 31, 1945 s Sheets-Sheet 5 WAYIIIIIIIII By E Patented Dec. 21, 1948 A OFFICE TIMBERMANS JACK Helen G. Krupka and Joseph Jack Krupka, Fairmont, W. Va.

Application January 31, 1945, Serial No. 575,442

9 Claims. (01. 254-85) This invention herein described has reference to mine timbering and has for its primary object to provide a mechanical timberman by means of which roof supporting timbers may be easily,

quickly and safely handled by one or two men;

thus disposing of the necessity of having a large crew of timbermen for doing the roof propping work as has been necessary heretofore.

Another object of our invention is to provide a standard gauge mine car withmeans whereby;

heavy timber may be easily handled, transported and placed into position by one or two operators or timbermen.

Another object of our invention is to provide a relatively light mine car with a rotatablyazi mounted jack and means whereby the car may be lifted upon or off of a track and carried to a desired place by a couple of men.

A further object of our invention is to provide in a mine car means for transporting heavy tim-il bers, means for horizontally lifting the same, means for fitting the timber (that is, sawing the timber to a proper length) and means whereby the timber may be exactly placed into proper position. =1

A still further object of our invention is to provide in a mine car a timber supporting, rotatable jack having means for securely binding a timber to the jack head, and means whereby the timber may be fitted into position, that is shortened, while upon the raised jack and in approximate position.

Another object of our invention is to provide a mine car with a turn-table supported jack having a common roof-range lifting height togetherwith means whereby such range may be increased for unusual height range.

Other features and advantages will become more readily apparent from the following description and the accompanying illustrative drawings in which:

Figure 1 is a side elevational view of my invention,

Figure 2 is a top plan view thereof,

Figure 3 is a detail elevational section of a jack head,

Figure 4 is an end view thereof,

Figure 5 is a detail section of a ratchet device Figure 6 is a detail sectional elevation of a turntable,

Figure '7 is a top plan view of the turn-table, Figure 8 is a sectional view taken on line 8-8 of Figure 1,

Figure 9 is a vertical section of part of a jack,

Figure 10 is a similar view of the lower portion of the jack,

Figure 11 is a detail elevational view of a clamping device,

Figure 12 is a detail of a horse member, and Figure 13 is a detail of a jack section.

In the various views in the drawings and in the following specification, like reference characters indicate like parts throughout and the character l5, represents my invention as an entirety. The character l6, refers to a common type of mine car which has been fitted with my mechanical timberman. The car is provided with fore and aft handle bars l1, l8, I9 and 20, by means of which the car may readily be lifted bodily from one position to another and on or off of a track. Besides the usual platform 2|, of the car, we provide an additional, spaced-apart platform 22. We also provide upon the platform 22, a pair of spaced-apart

horse members

23 and 24, having V-cuts 25 and 2B, in their upper ends 21 and 28, which align with one another and which are adapted to receive and hold a mine timber (not shown) and in order to securely bind the timber to said horse members there is provided a clamping device 29, comprising a pair of upright screws and 3|, secured to the

opposite sides

32 and 33, of a block 34, and slidable upon these screws is a bowed clamp jaw 35, the horizontal ends 36 and 31, of which are provided with apertures through which the screws project. After a timber has been placed upon the said horse members the jaw is placed in position and dropped down upon the timber, then clamped tightly thereupon by the nuts 38 and 39, the teeth 40, projecting from the lower surface of member 35, biting into the timber whereby it will be securely held to be sawed to a desired length by a portable electric saw I I, operated by a motor 42, mounted on the car Seated upon the platform 2|, of the car 16, is a turntable 43, mounted upon castor wheels 44. The turntable is preferably in the form of a casting having inclined arms 45, projecting inwardly to a collar 46, through which a threaded tube 41, projects and is held in position by means of set screws 48. The lower end 49, of the tube 41, extends down through the platform 2|, and also through a still lower spaced timber 50, secured to the under part of car l6. Seated in the end 49, of the tube 41, is a block 5|, held by a pin 52, passing through a timber 53, and held by a pin 54. B y means of the spaced- -apart platform 22, platform 2|, timbers 50, 53, and the collar 46, the tube 41, is held securely and rigidly in vertical position.

Operating through the tube 41, is a tubular lifting column-54, the lower end 55, of which is screw threaded, through the internally threaded operating nut or collar 56, rotatably seated upon the upper end 51, ofthe tube 41. Bosses 58 and 59, project up from the upper surface 60, of the member 56, and to these bosses are pivoted the right-angular'innerends BI and 62, of the hand levers 63 and '64, by means of which the member 58, may be rotated to screw up or down the column 54.

Removably mounted upon the upper end 65, of the said member 54, by means of a collar 66, is a jack head in the form of a trough, adapted to receive a timber. The bottom wall arms 68, of the said head is provided at each end 69 and iii, thereof with bearings H and 12, 13 and 14,,for supporting the respective spindles and 16, of the rollers Ti and 18, which rollers are provided with centrally disposed aligning

grooves

19 and 80. The roller i8, is provided throughout its periph. eral surface 8!, with spikes 82, for biting into a timber in order to move the same horizontally when the said rollersare rotated by means of the crank 83, on the iplQlccting :end -.84, o f shaft it. Fixed on said end 84, is sprocket wheel 85, connected by a sprocket chain 66, to a sprocket wheel 8], on the end 88, of the shaft 7.5, of roller jack supported by the turn-table, said jack comprising telescopically connected tubes, one of which is screw-threaded and a threaded collar 11, whereby both rollers are simultaneously turned in order to-shift a timber in one direction or the other. The sidewalls B9 and -98 of the jack head are adapted tose ure a timberseated n the hea fr m ccidental di pla ement Lone of these w s has been re oved iroinFigure ,2 ctr the dr wings in rder'to cla ify the showing) In cas the column :56,:shou1d.not be oia len h to reach a desired position on the minerQQf, there is provided extension column :membcrs ;9 l, the

uPDr portion 92, of; which is of the same diam-.

eter as column 54, but the lower portion 93, is of sufiiciently smaller diameter to fit snu ly into i m mber =54, thus forming a seat 94, against which the upper terminal of 15 abuts. The member 9|, may be of any desired lengthand any 5 number of which maybe used "to build up said column 54, to a desired height.

The end at of shaftx'l'fi is provided with a peeripheral ratchet 95 over which ,is seated the barrel end 9? of crank :83 and in which end is provided a transverse slot -91 transversely :of whi h i a pin 98 upon Whichis pivota1lym0unt ed the double pawl v95, either arm v:99 or 1519 of which may be engaged withthe teeth :Hil of said ratchet 95 by means of which the shaft 15 and its roller 18 may be rotatedin one direction or another through the action of the crank =83, A spring 5502, ensageable with the'detent I03, of the member 96, is adapted to hold the same in neutral position.

It is obvious irom the foregoing description and explanation of the purpose and use of the various elements of our invention that a timber may be first seated upon the members 2,3,,and 24, bound thereon to be sawed to exact length when accurately ascertained, then when the jack head is lowered, the timber may be seated thereupon,

, the jack secured against rotation by projecting any suitable timber through one of the openings 47', between arms 45, and against block 34, or inrsgo any other suitable manner, the car moved to approximate position, the crank 83, turned to bring the timber into exact position and then the jack I again raised to adjust-thetimber into exact-final position for securing.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after'considering the description in connection with the drawings. Therefore, a more lengthy description is regarded as unnecessary.

Minor changes in shape, size and rearrangement of details and parts such as come within the purview of the invention claimed may be resorted to, in actual practice, if desired.

being spiked.

seated upon the other tube for operating the threaded tube, levers connected to the collar by means of which it is turned, a trough head for said threaded tube, rollers carried by said head for supporting a timber, means for turning said rollers, one of said rollers being spiked to bite into the timber. I

2. A mine car, a pair of spaced-apart platforms thereon, a turn-table mounted on one platio -n and projecting through the other platform and a jack supported by the turn-table, said comprising telescopically connected tubes, one of which is screw threaded, and a threaded collar seated upon the other tube for operating the threaded tube, levers connected to the collar by means of which it is turned, a trough head for said threaded tube, rollers carried by said head for supporting a timber, chain means for synchronously turning said rollers, means-on a selected roller for biting into timber.

3. A mine car, .a pair of spaced-apart platforms thereon, a turn-table mounted onone platform and projecting through the other platform and a jack supported by the turn-table, said jack comprising telescopically connected tubes, one of which is screw threaded, and a threaded collar seated upon the other tube for operating the threaded tube, levers connected to the collar by means of which it is turned, a trough head for said threaded tube, rollers carried by said head for supporting a timber, means for turning said rollers, and one of said rollers being spiked to bite into the timber.

A mine car, a pair of spaced-apart platthereon, a turntablemollnted on one platform and projecting through the other platform and a jack supported by the turn-table, said jack comp-rising telescopically, connected tubes, one of which is screw threaded, and a threaded collar seated upon the other tube for operating the threaded tube, levers connected to the collar by means of which it is turned, a trough head for said threaded tube, rollers carried by said head for supporting a timber, and means for turning said rollers.

5. A mine car, a pair of spaced-apart platforms thereon, a turn-table mounted on one platform and projecting through the other platform and a jack supported by the turn-table, said jack comprising telescopically connected tubes, one of which is screw threaded, and a threaded collar seated upon the other tube for operating the threaded tube, levers connected to the, collar by means of which it is turned, a trough head for said threaded tube, and rol ers carri d by s d head for supporting a timber one of the rollers ,6. A mine car, a pairof spaced-apart platforms thereon, a turn-table mounted on one platform and projecting through the other platform and a jack supported by the turn-table, said jack comprising telescopically connected tubes, one of which is screw threaded, and a threaded collar seated upon the other tube for operating the threaded tube, lever means connected to the collar for t rning said collar, a head on'said threaded tube, means for guiding lumber on said head and means for urging lumber through said guide means.

7. A mine car, a pair of spaced-apart platforms thereon, a turn-table mounted on one platform and projecting through the other platform and a, jack supported by the turn-table, said jack comprising telescopically connected tubes, one of which is screw threaded, and a threaded collar seated upon the other tube for operating the threaded tube, and means connected to the collar for turning said collar, a head on said threaded tube, means for urging lumber through said head, said last mentioned means including rollers, and means for synchronously actuating said rollers.

8. A mine car, a pair of spaced-apart platforms thereon, a turn-table mounted on one platform and projecting through the other platform and a jack supported by the turn-table, said jack comprising telescopically connected tubes, one of which is screw threaded and a threaded collar seated upon the other tube for operating the threaded tube, a head received on said screw threaded tube, rollers on said head and means for rotating said rollers.

9. The described device comprising a platform, a turn-table operable centrally of the platform, a jack supported upon the turn-table, a head on the jack, spaced rollers on the head, and means for synchronously rotating the rollers, one of which is spiked.

HELEN G. KRUPKA. JOSEPH JACK KRUPKA.

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

UNITED STATES PATENTS